[edk2-devel] [PATCH v3 2/4] RedfishPkg/library: EDK2 port of jansson library
Abner Chang
abner.chang at hpe.com
Thu Dec 3 15:13:27 UTC 2020
> -----Original Message-----
> From: Leif Lindholm [mailto:leif at nuviainc.com]
> Sent: Wednesday, December 2, 2020 9:47 PM
> To: Chang, Abner (HPS SW/FW Technologist) <abner.chang at hpe.com>
> Cc: devel at edk2.groups.io; Andrew Fish <afish at apple.com>; Laszlo Ersek
> <lersek at redhat.com>; Michael D Kinney <michael.d.kinney at intel.com>;
> Wang, Nickle (HPS SW) <nickle.wang at hpe.com>; O'Hanley, Peter (EXL)
> <peter.ohanley at hpe.com>
> Subject: Re: [PATCH v3 2/4] RedfishPkg/library: EDK2 port of jansson library
>
> On Wed, Dec 02, 2020 at 15:15:55 +0800, Abner Chang wrote:
> > edk2 JsonLib which is the edk2 port of open source
> > jansson library.
> > (https://github.com/akheron/jansson)
>
> Please describe what is in this patch.
ok
>
> > Signed-off-by: Abner Chang <abner.chang at hpe.com>
> >
> > Cc: Andrew Fish <afish at apple.com>
> > Cc: Laszlo Ersek <lersek at redhat.com>
> > Cc: Leif Lindholm <leif at nuviainc.com>
> > Cc: Michael D Kinney <michael.d.kinney at intel.com>
> > Cc: Nickle Wang <nickle.wang at hpe.com>
> > Cc: Peter O'Hanley <peter.ohanley at hpe.com>
> > ---
> > .../Include/Library/JanssonJsonLibMapping.h | 63 +
> > RedfishPkg/Include/Library/JsonLib.h | 767 ++++++++++++
> > .../Library/JsonLib/JanssonCrtLibSupport.c | 705 +++++++++++
> > .../Library/JsonLib/JanssonCrtLibSupport.h | 196 +++
> > RedfishPkg/Library/JsonLib/JsonLib.c | 960 ++++++++++++++
> > RedfishPkg/Library/JsonLib/JsonLib.inf | 103 ++
> > RedfishPkg/Library/JsonLib/JsonUtilities.c | 417 +++++++
> > RedfishPkg/Library/JsonLib/JsonUtilities.h | 69 +
> > RedfishPkg/Library/JsonLib/Readme.txt | 40 +
> > RedfishPkg/Library/JsonLib/assert.h | 16 +
> > RedfishPkg/Library/JsonLib/errno.h | 16 +
> > RedfishPkg/Library/JsonLib/jansson_config.h | 60 +
> > .../Library/JsonLib/jansson_private_config.h | 19 +
> > RedfishPkg/Library/JsonLib/limits.h | 16 +
> > RedfishPkg/Library/JsonLib/load.c | 1111 +++++++++++++++++
> > RedfishPkg/Library/JsonLib/math.h | 16 +
> > RedfishPkg/Library/JsonLib/stdarg.h | 15 +
> > RedfishPkg/Library/JsonLib/stddef.h | 16 +
> > RedfishPkg/Library/JsonLib/stdio.h | 15 +
> > RedfishPkg/Library/JsonLib/stdlib.h | 16 +
> > RedfishPkg/Library/JsonLib/string.h | 16 +
> > RedfishPkg/Library/JsonLib/sys/time.h | 15 +
> > RedfishPkg/Library/JsonLib/sys/types.h | 15 +
> > RedfishPkg/Library/JsonLib/time.h | 15 +
> > RedfishPkg/RedfishPkg.ci.yaml | 33 +-
> > 25 files changed, 4729 insertions(+), 1 deletion(-)
> > create mode 100644 RedfishPkg/Include/Library/JanssonJsonLibMapping.h
> > create mode 100644 RedfishPkg/Include/Library/JsonLib.h
> > create mode 100644 RedfishPkg/Library/JsonLib/JanssonCrtLibSupport.c
> > create mode 100644 RedfishPkg/Library/JsonLib/JanssonCrtLibSupport.h
> > create mode 100644 RedfishPkg/Library/JsonLib/JsonLib.c
> > create mode 100644 RedfishPkg/Library/JsonLib/JsonLib.inf
> > create mode 100644 RedfishPkg/Library/JsonLib/JsonUtilities.c
> > create mode 100644 RedfishPkg/Library/JsonLib/JsonUtilities.h
> > create mode 100644 RedfishPkg/Library/JsonLib/Readme.txt
> > create mode 100644 RedfishPkg/Library/JsonLib/assert.h
> > create mode 100644 RedfishPkg/Library/JsonLib/errno.h
> > create mode 100644 RedfishPkg/Library/JsonLib/jansson_config.h
> > create mode 100644 RedfishPkg/Library/JsonLib/jansson_private_config.h
> > create mode 100644 RedfishPkg/Library/JsonLib/limits.h
> > create mode 100644 RedfishPkg/Library/JsonLib/load.c
> > create mode 100644 RedfishPkg/Library/JsonLib/math.h
> > create mode 100644 RedfishPkg/Library/JsonLib/stdarg.h
> > create mode 100644 RedfishPkg/Library/JsonLib/stddef.h
> > create mode 100644 RedfishPkg/Library/JsonLib/stdio.h
> > create mode 100644 RedfishPkg/Library/JsonLib/stdlib.h
> > create mode 100644 RedfishPkg/Library/JsonLib/string.h
> > create mode 100644 RedfishPkg/Library/JsonLib/sys/time.h
> > create mode 100644 RedfishPkg/Library/JsonLib/sys/types.h
> > create mode 100644 RedfishPkg/Library/JsonLib/time.h
> >
> > diff --git a/RedfishPkg/Include/Library/JanssonJsonLibMapping.h
> b/RedfishPkg/Include/Library/JanssonJsonLibMapping.h
> > new file mode 100644
> > index 0000000000..80452d6663
> > --- /dev/null
> > +++ b/RedfishPkg/Include/Library/JanssonJsonLibMapping.h
> > @@ -0,0 +1,63 @@
> > +/** @file
> > + This is the wrapper to map funcitons and definitions used in
> > + native jannson applications to edk2 JsonLib. This avoids the
> > + modifications on native jannson applications to be built under
> > + edk2 environment.
> > +
> > + (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
> > +
> > + SPDX-License-Identifier: BSD-2-Clause-Patent
> > +
> > +**/
> > +
> > +#ifndef LIBREDFISH_JSON_SUPPORT_H_
> > +#define LIBREDFISH_JSON_SUPPORT_H_
> > +
> > +#include <Library/JsonLib.h>
> > +
> > +typedef EDKII_JSON_VALUE json_t;
> > +typedef EDKII_JSON_INT_T json_int_t;
> > +typedef EDKII_JSON_TYPE json_type;
> > +
> > +///
> > +/// JSON type mapping
> > +///
> > +#define JSON_OBJECT EdkiiJsonTypeObject
> > +#define JSON_ARRAY EdkiiJsonTypeArray
> > +#define JSON_STRING EdkiiJsonTypeString
> > +#define JSON_INTEGER EdkiiJsonTypeInteger
> > +#define JSON_REAL EdkiiJsonTypeReal
> > +#define JSON_TRUE EdkiiJsonTypeTrue
> > +#define JSON_FALSE EdkiiJsonTypeFalse
> > +#define JSON_NULL EdkiiJsonTypeNull
> > +
> > +#define JSON_INDENT(n) EDKII_JSON_INDENT(n)
> > +
> > +///
> > +/// JSON function mapping
> > +///
> > +#define json_object_get(JsonObj,key)
> JsonObjectGetValue(JsonObj,key)
> > +#define json_is_object(JsonValue) JsonValueIsObject(JsonValue)
> > +#define json_is_array(JsonValue) JsonValueIsArray(JsonValue)
> > +#define json_is_string(JsonValue) JsonValueIsString(JsonValue)
> > +#define json_integer(JsonValue)
> JsonValueInitNumber(JsonValue)
> > +#define json_object_set(JsonObj,Key,JsonValue)
> JsonObjectSetValue(JsonObj,Key,JsonValue)
> > +#define json_object() JsonValueInitObject()
> > +#define json_object_size(JsonObject) JsonObjectSize(JsonObject)
> > +#define json_array_get(JsonArray,Index)
> JsonArrayGetValue(JsonArray,Index)
> > +#define json_array_append(JsonArray,JsonValue)
> JsonArrayAppendValue(JsonArray,JsonValue)
> > +#define json_dumps(JsonValue,Flags)
> JsonDumpString(JsonValue,Flags)
> > +#define json_string_value(JsonValue)
> JsonValueGetString(JsonValue)
> > +#define json_array_size(JsonArray) JsonArrayCount(JsonArray)
> > +#define json_array() JsonValueInitArray()
> > +#define json_loadb(Buffer,BufferLen,Flags,Error)
> JsonLoadBuffer(Buffer,BufferLen,Flags,Error)
> > +#define json_decref(JsonValue)
> JsonDecreaseReference(JsonValue)
> > +#define json_incref(JsonValue)
> JsonIncreaseReference(JsonValue)
> > +#define json_string(AsciiString)
> JsonValueInitAsciiString(AsciiString)
> > +#define json_object_iter(JsonValue) JsonObjectIterator(JsonValue)
> > +#define json_object_iter_value(Iterator)
> JsonObjectIteratorValue(Iterator)
> > +#define json_object_iter_next(JsonValue,Iterator)
> JsonObjectIteratorNext(JsonValue,Iterator)
> > +#define json_integer_value(JsonValue)
> JsonValueGetNumber(JsonValue)
> > +#define json_get_type(JsonValue) JsonGetType(JsonValue)
>
> I'm not going to force you to do the work here, but I am going to
> state an opinion:
> When we bring in external code, using a differing coding style, it is
> very helpful to do what we *didn't* do with libfdt and provide a
> coding-style compatible way of accessing it. You do that here, and
> that is excellent, but...
>
> Only doing itn through macros means we're following the superficial
> form without following the underlying design ideals.
> In a perfect world, when we import an external module, I would like to
> see it wrapped as a protocol, discoverable for anyone to use.
That is always good to design a protocol interface which can be used by modules. Also we can have the different implementations for the protocol API.
However, this methodology is not perfect fit to the edk2 port of JSON lib. If the external module uses jansson lib, that just links with the edk2 JsonLib. But if the external module uses another JSON library such as Parson then it has to link with the Parson edk2 port lib (someone has to implement it). The JSON EFI protocol may not easy to be standardized because those open source JSON lib project have the different API definitions. Multiple EFI JSON protocols with different protocol GUID would be introduced for different JSON lib implementations. To define a protocol for JSON functions seems to me not very useful and there will have many APIs :)
And even we warp it as a protocol, we still need the macros to map native JSON lib APIs used in the external module to the code which invokes edk2 JSON protocol API.
>
> > +
> > +#endif
> > diff --git a/RedfishPkg/Include/Library/JsonLib.h
> b/RedfishPkg/Include/Library/JsonLib.h
> > new file mode 100644
> > index 0000000000..adadcbf33f
> > --- /dev/null
> > +++ b/RedfishPkg/Include/Library/JsonLib.h
> > @@ -0,0 +1,767 @@
> > +/** @file
> > + APIs for JSON operations.
> > +
> > + Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
> > + (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
> > +
> > + SPDX-License-Identifier: BSD-2-Clause-Patent
> > +
> > +**/
> > +#ifndef JSON_LIB_H_
> > +#define JSON_LIB_H_
> > +
> > +#include <Uefi.h>
> > +
> > +#include <Library/BaseMemoryLib.h>
> > +#include <Library/MemoryAllocationLib.h>
> > +
> > +typedef VOID* EDKII_JSON_VALUE;
> > +typedef VOID* EDKII_JSON_ARRAY;
> > +typedef VOID* EDKII_JSON_OBJECT;
> > +
> > +///
> > +/// Map to json_int_t in jansson.h
> > +///
> > +typedef long long EDKII_JSON_INT_T; //
> #JSON_INTEGER_IS_LONG_LONG is set to 1
> > + // in jansson_Config.h
>
> Is this the right thing to do, or should this be explicitly UINT64?
Will check this.
>
> > +
> > +///
> > +/// Map to the definitions in jansson.h
> > +///
> > +#define EDKII_JSON_MAX_INDENT 0x1f
> > +#define EDKII_JSON_INDENT(n) ((n)&EDKII_JSON_MAX_INDENT)
>
> Spaces around & please.
>
> > +#define EDKII_JSON_COMPACT 0x20
> > +#define EDKII_JSON_ENSURE_ASCII 0x40
> > +#define EDKII_JSON_SORT_KEYS 0x80
> > +#define EDKII_JSON_PRESERVE_ORDER 0x100
> > +#define EDKII_JSON_ENCODE_ANY 0x200
> > +#define EDKII_JSON_ESCAPE_SLASH 0x400
> > +#define EDKII_JSON_REAL_PRECISION(n) (((n)&0x1F) << 11)
>
> Is this the same 0x1f as above?
Did you refer to EDKII_JSON_MAX_INDENT? This is used for pretty print.
> Spaces around & please.
ok
>
> > +#define EDKII_JSON_EMBED 0x10000
> > +
> > +#define EDKII_JSON_ARRAY_FOREACH(Array, Index, Value) \
> > + for(Index = 0; \
> > + Index < JsonArrayCount(Array) && (Value = JsonArrayGetValue(Array,
> Index)); \
> > + Index++)
> > +
> > +///
> > +/// Map to the json_error_t in jansson.h
> > +///
> > +#define EDKII_JSON_ERROR_TEXT_LENGTH 160
> > +#define EDKII_JSON_ERROR_SOURCE_LENGTH 80
> > +typedef struct {
> > + INTN Line;
> > + INTN Column;
> > + INTN Position;
> > + CHAR8 Source [EDKII_JSON_ERROR_SOURCE_LENGTH];
> > + CHAR8 Text [EDKII_JSON_ERROR_TEXT_LENGTH];
> > +} EDKII_JSON_ERROR;
> > +
> > +///
> > +/// Map to the json_type in jansson.h
> > +///
> > +typedef enum {
> > + EdkiiJsonTypeObject,
> > + EdkiiJsonTypeArray,
> > + EdkiiJsonTypeString,
> > + EdkiiJsonTypeInteger,
> > + EdkiiJsonTypeReal,
> > + EdkiiJsonTypeTrue,
> > + EdkiiJsonTypeFalse,
> > + EdkiiJsonTypeNull
> > +} EDKII_JSON_TYPE;
> > +
> > +/**
> > + The function is used to convert a NULL terminated UTF8 encoded string
> to a JSON
> > + value. Only object and array represented strings can be converted
> successfully,
> > + since they are the only valid root values of a JSON text for UEFI usage.
> > +
> > + Real number and number with exponent part are not supportted by UEFI.
> > +
> > + Caller needs to cleanup the root value by calling JsonValueFree().
> > +
> > + @param[in] Text The NULL terminated UTF8 encoded string to
> convert
> > +
> > + @retval Array JSON value or object JSON value, or NULL when any
> error occurs.
> > +
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +TextToJson (
> > + IN CHAR8* Text
> > + );
> > +
> > +/**
> > + The function is used to convert the JSON root value to a UTF8 encoded
> string which
> > + is terminated by NULL, or return NULL on error.
> > +
> > + Only array JSON value or object JSON value is valid for converting, and
> caller is
> > + responsible for free converted string.
> > +
> > + @param[in] Json The JSON value to be converted
> > +
> > + @retval The JSON value converted UTF8 string or NULL.
> > +
> > +**/
> > +CHAR8*
> > +EFIAPI
> > +JsonToText (
> > + IN EDKII_JSON_VALUE Json
> > + );
> > +
> > +/**
> > + The function is used to initialize a JSON value which contains a new JSON
> array,
> > + or NULL on error. Initially, the array is empty.
> > +
> > + The reference count of this value will be set to 1, and caller needs to
> cleanup the
> > + value by calling JsonValueFree().
> > +
> > + More details for reference count strategy can refer to the API
> description for JsonValueFree().
> > +
> > + @retval The created JSON value which contains a JSON array or NULL.
> > +
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonValueInitArray (
> > + VOID
> > + );
> > +
> > +/**
> > + The function is used to initialize a JSON value which contains a new JSON
> object,
> > + or NULL on error. Initially, the object is empty.
> > +
> > + The reference count of this value will be set to 1, and caller needs to
> cleanup the
> > + value by calling JsonValueFree().
> > +
> > + More details for reference count strategy can refer to the API
> description for JsonValueFree().
> > +
> > + @retval The created JSON value which contains a JSON object or NULL.
> > +
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonValueInitObject (
> > + VOID
> > + );
> > +
> > +/**
> > + The function is used to initialize a JSON value which contains a new JSON
> string,
> > + or NULL on error.
> > +
> > + The input string must be NULL terminated Ascii format, non-Ascii
> characters will
> > + be processed as an error. Unicode characters can also be represented by
> Ascii string
> > + as the format: \u + 4 hexadecimal digits, like \u3E5A, or \u003F.
> > +
> > + The reference count of this value will be set to 1, and caller needs to
> cleanup the
> > + value by calling JsonValueFree().
> > +
> > + More details for reference count strategy can refer to the API
> description for JsonValueFree().
> > +
> > + @param[in] String The Ascii string to initialize to JSON value
> > +
> > + @retval The created JSON value which contains a JSON string or NULL.
> Select a
> > + Getter API for a specific encoding format.
> > +
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonValueInitAsciiString (
> > + IN CONST CHAR8 *String
> > + );
> > +
> > +/**
> > + The function is used to initialize a JSON value which contains a new JSON
> string,
> > + or NULL on error.
> > +
> > + The input must be a NULL terminated UCS2 format Unicode string.
> > +
> > + The reference count of this value will be set to 1, and caller needs to
> cleanup the
> > + value by calling JsonValueFree().
> > +
> > + More details for reference count strategy can refer to the API
> description for JsonValueFree().
> > +
> > + @param[in] String The Unicode string to initialize to JSON value
> > +
> > + @retval The created JSON value which contains a JSON string or NULL.
> Select a
> > + Getter API for a specific encoding format.
> > +
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonValueInitUnicodeString (
> > + IN CHAR16 *String
> > + );
> > +
> > +/**
> > + The function is used to initialize a JSON value which contains a new JSON
> integer,
> > + or NULL on error.
> > +
> > + The reference count of this value will be set to 1, and caller needs to
> cleanup the
> > + value by calling JsonValueFree().
> > +
> > + More details for reference count strategy can refer to the API
> description for JsonValueFree().
> > +
> > + @param[in] Value The integer to initialize to JSON value
> > +
> > + @retval The created JSON value which contains a JSON number or
> NULL.
> > +
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonValueInitNumber (
> > + IN INT64 Value
> > + );
> > +
> > +/**
> > + The function is used to initialize a JSON value which contains a new JSON
> boolean,
> > + or NULL on error.
> > +
> > + Boolean JSON value is kept as static value, and no need to do any
> cleanup work.
> > +
> > + @param[in] Value The boolean value to initialize.
> > +
> > + @retval The created JSON value which contains a JSON boolean or
> NULL.
> > +
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonValueInitBoolean (
> > + IN BOOLEAN Value
> > + );
> > +
> > +/**
> > + The function is used to initialize a JSON value which contains a new JSON
> NULL,
> > + or NULL on error.
> > +
> > + NULL JSON value is kept as static value, and no need to do any cleanup
> work.
> > +
> > + @retval The created NULL JSON value.
> > +
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonValueInitNull (
> > + VOID
> > + );
> > +
> > +/**
> > + The function is used to decrease the reference count of a JSON value by
> one, and once
> > + this reference count drops to zero, the value is destroyed and it can no
> longer be used.
> > + If this destroyed value is object type or array type, reference counts for
> all containing
> > + JSON values will be decreased by 1. Boolean JSON value and NULL JSON
> value won't be destroyed
> > + since they are static values kept in memory.
> > +
> > + Reference Count Strategy: BaseJsonLib uses this strategy to track
> whether a value is still
> > + in use or not. When a value is created, it's reference count is set to 1. If a
> reference to a
> > + value is kept for use, its reference count is incremented, and when the
> value is no longer
> > + needed, the reference count is decremented. When the reference
> count drops to zero, there are
> > + no references left, and the value can be destroyed.
> > +
> > + The given JSON value maybe NULL and not causing any problem. Just
> output the debug message
> > + to inform caller the NULL value is passed in.
> > +
> > + @param[in] Json The JSON value to be freed. json_decref may
> return without any
> > + changes if Json is NULL.
> > +
> > +**/
> > +VOID
> > +EFIAPI
> > +JsonValueFree (
> > + IN EDKII_JSON_VALUE Json
> > + );
> > +
> > +/**
> > + The function is used to create a fresh copy of a JSON value, and all child
> values are deep
> > + copied in a recursive fashion. It should be called when this JSON value
> might be modified
> > + in later use, but the original still wants to be used in somewhere else.
> > +
> > + Reference counts of the returned root JSON value and all child values will
> be set to 1, and
> > + caller needs to cleanup the root value by calling JsonValueFree().
> > +
> > + * Note: Since this function performs a copy from bottom to up, too many
> calls may cause some
> > + performance issues, user should avoid unnecessary calls to this function
> unless it is really
> > + needed.
> > +
> > + @param[in] Json The JSON value to be cloned.
> > +
> > + @retval Return the cloned JSON value, or NULL on error.
> > +
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonValueClone (
> > + IN EDKII_JSON_VALUE Json
> > + );
> > +
> > +/**
> > + The function is used to return if the provided JSON value contains a JSON
> array.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval TRUE The JSON value contains a JSON array.
> > + @retval FALSE The JSON value doesn't contain a JSON array.
> > +
> > +**/
> > +BOOLEAN
> > +EFIAPI
> > +JsonValueIsArray (
> > + IN EDKII_JSON_VALUE Json
> > + );
> > +
> > +/**
> > + The function is used to return if the provided JSON value contains a JSON
> object.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval TRUE The JSON value contains a JSON object.
> > + @retval FALSE The JSON value doesn't contain a JSON object.
> > +
> > +**/
> > +BOOLEAN
> > +EFIAPI
> > +JsonValueIsObject (
> > + IN EDKII_JSON_VALUE Json
> > + );
> > +
> > +/**
> > + The function is used to return if the provided JSON Value contains a
> string, Ascii or
> > + Unicode format is not differentiated.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval TRUE The JSON value contains a JSON string.
> > + @retval FALSE The JSON value doesn't contain a JSON string.
> > +
> > +**/
> > +BOOLEAN
> > +EFIAPI
> > +JsonValueIsString (
> > + IN EDKII_JSON_VALUE Json
> > + );
> > +
> > +/**
> > + The function is used to return if the provided JSON value contains a JSON
> number.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval TRUE The JSON value is contains JSON number.
> > + @retval FALSE The JSON value doesn't contain a JSON number.
> > +
> > +**/
> > +BOOLEAN
> > +EFIAPI
> > +JsonValueIsNumber (
> > + IN EDKII_JSON_VALUE Json
> > + );
> > +
> > +/**
> > + The function is used to return if the provided JSON value contains a JSON
> boolean.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval TRUE The JSON value contains a JSON boolean.
> > + @retval FALSE The JSON value doesn't contain a JSON boolean.
> > +
> > +**/
> > +BOOLEAN
> > +EFIAPI
> > +JsonValueIsBoolean (
> > + IN EDKII_JSON_VALUE Json
> > + );
> > +
> > +/**
> > + The function is used to return if the provided JSON value contains a JSON
> NULL.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval TRUE The JSON value contains a JSON NULL.
> > + @retval FALSE The JSON value doesn't contain a JSON NULL.
> > +
> > +**/
> > +BOOLEAN
> > +EFIAPI
> > +JsonValueIsNull (
> > + IN EDKII_JSON_VALUE Json
> > + );
> > +
> > +/**
> > + The function is used to retrieve the associated array in an array type
> JSON value.
> > +
> > + Any changes to the returned array will impact the original JSON value.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval Return the associated array in JSON value or NULL.
> > +
> > +**/
> > +EDKII_JSON_ARRAY
> > +EFIAPI
> > +JsonValueGetArray (
> > + IN EDKII_JSON_VALUE Json
> > + );
> > +
> > +/**
> > + The function is used to retrieve the associated object in an object type
> JSON value.
> > +
> > + Any changes to the returned object will impact the original JSON value.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval Return the associated object in JSON value or NULL.
> > +
> > +**/
> > +EDKII_JSON_OBJECT
> > +EFIAPI
> > +JsonValueGetObject (
> > + IN EDKII_JSON_VALUE Json
> > + );
> > +
> > +/**
> > + The function is used to retrieve the associated Ascii string in a string type
> JSON value.
> > +
> > + Any changes to the returned string will impact the original JSON value.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval Return the associated Ascii string in JSON value or NULL.
> > +
> > +**/
> > +CHAR8*
> > +EFIAPI
> > +JsonValueGetAsciiString (
> > + IN EDKII_JSON_VALUE Json
> > + );
> > +
> > +/**
> > + The function is used to retrieve the associated Unicode string in a string
> type JSON value.
> > +
> > + Caller can do any changes to the returned string without any impact to
> the original JSON
> > + value, and caller needs to free the returned string.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval Return the associated Unicode string in JSON value or NULL.
> > +
> > +**/
> > +CHAR16*
> > +EFIAPI
> > +JsonValueGetUnicodeString (
> > + IN EDKII_JSON_VALUE Json
> > + );
> > +
> > +/**
> > + The function is used to retrieve the associated integer in a number type
> JSON value.
> > +
> > + The input JSON value should not be NULL or contain no JSON number,
> otherwise it will
> > + ASSERT() and return 0.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval Return the associated number in JSON value.
> > +
> > +**/
> > +INT64
> > +EFIAPI
> > +JsonValueGetNumber (
> > + IN EDKII_JSON_VALUE Json
> > + );
> > +
> > +/**
> > + The function is used to retrieve the associated boolean in a boolean type
> JSON value.
> > +
> > + The input JSON value should not be NULL or contain no JSON boolean,
> otherwise it will
> > + ASSERT() and return FALSE.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval Return the associated value of JSON boolean.
> > +
> > +**/
> > +BOOLEAN
> > +EFIAPI
> > +JsonValueGetBoolean (
> > + IN EDKII_JSON_VALUE Json
> > + );
> > +
> > +/**
> > + The function is used to retrieve the associated string in a string type JSON
> value.
> > +
> > + Any changes to the returned string will impact the original JSON value.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval Return the associated Ascii string in JSON value or NULL.
> > +
> > +**/
> > +CONST CHAR8*
> > +EFIAPI
> > +JsonValueGetString (
> > + IN EDKII_JSON_VALUE Json
> > + );
> > +
> > +/**
> > + The function is used to get the number of elements in a JSON object, or 0
> if it is NULL or
> > + not a JSON object.
> > +
> > + @param[in] JsonObject The provided JSON object.
> > +
> > + @retval Return the number of elements in this JSON object or 0.
> > +
> > +**/
> > +UINTN
> > +EFIAPI
> > +JsonObjectSize (
> > + IN EDKII_JSON_OBJECT JsonObject
> > + );
> > +
> > +/**
> > + The function is used to enumerate all keys in a JSON object.
> > +
> > + Caller should be responsible to free the returned key array refference.
> But contained keys
> > + are read only and must not be modified or freed.
> > +
> > + @param[in] JsonObj The provided JSON object for enumeration.
> > + @param[out] KeyCount The count of keys in this JSON object.
> > +
> > + @retval Return an array of the enumerated keys in this JSON object or
> NULL.
> > +
> > +**/
> > +CHAR8**
> > +JsonObjectGetKeys (
> > + IN EDKII_JSON_OBJECT JsonObj,
> > + OUT UINTN *KeyCount
> > + );
> > +
> > +/**
> > + The function is used to get a JSON value corresponding to the input key
> from a JSON object.
> > +
> > + It only returns a reference to this value and any changes on this value will
> impact the
> > + original JSON object. If that is not expected, please call JsonValueClone()
> to clone it to
> > + use.
> > +
> > + Input key must be a valid NULL terminated UTF8 encoded string. NULL
> will be returned when
> > + Key-Value is not found in this JSON object.
> > +
> > + @param[in] JsonObj The provided JSON object.
> > + @param[in] Key The key of the JSON value to be retrieved.
> > +
> > + @retval Return the corresponding JSON value to key, or NULL on error.
> > +
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonObjectGetValue (
> > + IN CONST EDKII_JSON_OBJECT JsonObj,
> > + IN CONST CHAR8 *Key
> > + );
> > +
> > +/**
> > + The function is used to set a JSON value corresponding to the input key
> from a JSON object,
> > + and the reference count of this value will be increased by 1.
> > +
> > + Input key must be a valid NULL terminated UTF8 encoded string. If there
> already is a value for
> > + this key, this key will be assigned to the new JSON value. The old JSON
> value will be removed
> > + from this object and thus its' reference count will be decreased by 1.
> > +
> > + More details for reference count strategy can refer to the API
> description for JsonValueFree().
> > +
> > + @param[in] JsonObj The provided JSON object.
> > + @param[in] Key The key of the JSON value to be set.
> > + @param[in] Json The JSON value to set to this JSON object
> mapped by key.
> > +
> > + @retval EFI_ABORTED Some error occur and operation aborted.
> > + @retval EFI_SUCCESS The JSON value has been set to this JSON
> object.
> > +
> > +**/
> > +EFI_STATUS
> > +EFIAPI
> > +JsonObjectSetValue (
> > + IN EDKII_JSON_OBJECT JsonObj,
> > + IN CONST CHAR8 *Key,
> > + IN EDKII_JSON_VALUE Json
> > + );
> > +
> > +/**
> > + The function is used to get the number of elements in a JSON array, or 0
> if it is NULL or
> > + not a JSON array.
> > +
> > + @param[in] JsonArray The provided JSON array.
> > +
> > + @retval Return the number of elements in this JSON array or 0.
> > +
> > +**/
> > +UINTN
> > +EFIAPI
> > +JsonArrayCount (
> > + IN EDKII_JSON_ARRAY JsonArray
> > + );
> > +
> > +/**
> > + The function is used to return the JSON value in the array at position
> index. The valid range
> > + for this index is from 0 to the return value of JsonArrayCount() minus 1.
> > +
> > + It only returns a reference to this value and any changes on this value will
> impact the
> > + original JSON object. If that is not expected, please call JsonValueClone()
> to clone it to
> > + use.
> > +
> > + If this array is NULL or not a JSON array, or if index is out of range, NULL
> will be returned.
> > +
> > + @param[in] JsonArray The provided JSON Array.
> > +
> > + @retval Return the JSON value located in the Index position or NULL.
> > +
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonArrayGetValue (
> > + IN EDKII_JSON_ARRAY JsonArray,
> > + IN UINTN Index
> > + );
> > +
> > +/**
> > + The function is used to append a JSON value to the end of the JSON array,
> and grow the size of
> > + array by 1. The reference count of this value will be increased by 1.
> > +
> > + More details for reference count strategy can refer to the API
> description for JsonValueFree().
> > +
> > + @param[in] JsonArray The provided JSON object.
> > + @param[in] Json The JSON value to append.
> > +
> > + @retval EFI_ABORTED Some error occur and operation aborted.
> > + @retval EFI_SUCCESS JSON value has been appended to the end
> of the JSON array.
> > +
> > +**/
> > +EFI_STATUS
> > +EFIAPI
> > +JsonArrayAppendValue (
> > + IN EDKII_JSON_ARRAY JsonArray,
> > + IN EDKII_JSON_VALUE Json
> > + );
> > +
> > +/**
> > + The function is used to remove a JSON value at position index, shifting
> the elements after index
> > + one position towards the start of the array. The reference count of this
> value will be decreased
> > + by 1.
> > +
> > + More details for reference count strategy can refer to the API
> description for JsonValueFree().
> > +
> > + @param[in] JsonArray The provided JSON array.
> > + @param[in] Index The Index position before removement.
> > +
> > + @retval EFI_ABORTED Some error occur and operation aborted.
> > + @retval EFI_SUCCESS The JSON array has been removed at
> position index.
> > +
> > +**/
> > +EFI_STATUS
> > +EFIAPI
> > +JsonArrayRemoveValue (
> > + IN EDKII_JSON_ARRAY JsonArray,
> > + IN UINTN Index
> > + );
> > +
> > +/**
> > + Dump JSON to a buffer
> > +
> > + @param[in] JsonValue The provided JSON array.
> > + @param[in] Index The Index position before removement.
> > +
> > + @retval NULL Dump fail if NULL returned, otherwise the buffer
> > + contain JSON paylaod in ASCII string.
> > +**/
> > +CHAR8 *
> > +EFIAPI
> > +JsonDumpString (
> > + IN EDKII_JSON_ARRAY JsonValue,
> > + IN UINTN Flags
> > + );
> > +
> > +/**
> > + Load JSON from a buffer
> > +
> > + @param[in] Buffer Bufffer to the JSON payload
> > + @param[in] BufferLen Length of the buffer
> > + @param[in] Flags Flag of loading JSON buffer
> > +
> > + @retval EDKII_JSON_VALUE NULL means fail to load JSON payload.
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonLoadBuffer (
> > + IN CONST CHAR8 *Buffer,
> > + IN UINTN BufferLen,
> > + IN UINTN Flags,
> > + IN EDKII_JSON_ERROR *Error
> > + );
> > +
> > +/**
> > + Decrease reference
> > +
> > + @param[in] JsonValue JSON value
> > +**/
> > +VOID
> > +EFIAPI
> > +JsonDecreaseReference (
> > + IN EDKII_JSON_VALUE JsonValue
> > + );
> > +
> > +/**
> > + Increase reference
> > +
> > + @param[in] JsonValue JSON value
> > + @retval EDKII_JSON_VALUE of itself
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonIncreaseReference (
> > + IN EDKII_JSON_VALUE JsonValue
> > + );
> > +/**
> > + Returns an opaque iterator which can be used to iterate over all key-
> value pairs
> > + in object, or NULL if object is empty
> > +
> > + @param[in] JsonValue JSON value
> > +**/
> > +VOID *
> > +EFIAPI
> > +JsonObjectIterator (
> > + IN EDKII_JSON_VALUE JsonValue
> > + );
> > +
> > +/**
> > + Extract the associated value from iterator.
> > +
> > + @param[in] Iterator Iterator pointer
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonObjectIteratorValue (
> > + IN VOID *Iterator
> > + );
> > +
> > +/**
> > + Returns an iterator pointing to the next key-value pair in object after iter,
> > + or NULL if the whole object has been iterated through.
> > +
> > + @param[in] JsonValue JSON value
> > + @param[in] Iterator Iterator pointer
> > + @retval Iterator pointer
> > +**/
> > +VOID *
> > +JsonObjectIteratorNext (
> > + IN EDKII_JSON_VALUE JsonValue,
> > + IN VOID *Iterator
> > + );
> > +
> > +/**
> > + Returns the json type of this json value
> > +
> > + @param[in] JsonValue JSON value
> > + @retval JSON type returned
> > +**/
> > +EDKII_JSON_TYPE
> > +EFIAPI
> > +JsonGetType(
> > + IN EDKII_JSON_VALUE JsonValue
> > + );
> > +#endif
> > diff --git a/RedfishPkg/Library/JsonLib/JanssonCrtLibSupport.c
> b/RedfishPkg/Library/JsonLib/JanssonCrtLibSupport.c
> > new file mode 100644
> > index 0000000000..907634a05b
> > --- /dev/null
> > +++ b/RedfishPkg/Library/JsonLib/JanssonCrtLibSupport.c
>
> I would howver very much prefer to see this code broken out as a
> separate library (not protocol), and hence patch. It seems very much
> like a minimalistic subset of https://github.com/tianocore/edk2-libc.
Separate lib under RedfishPkg?
>
> > @@ -0,0 +1,705 @@
> > +/** @file
> > + CRT wrapper functions for Jansson system call.
> > +
> > + Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
> > + (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
> > +
> > + SPDX-License-Identifier: BSD-2-Clause-Patent
> > +
> > +**/
> > +
> > +#include <JanssonCrtLibSupport.h>
> > +#include <Library/MemoryAllocationLib.h>
> > +#include <Library/UefiRuntimeServicesTableLib.h>
> > +
> > +int errno = 0;
> > +
> > +/**
> > + Determine if a particular character is an alphanumeric character
> > + @return Returns 1 if c is an alphanumeric character, otherwise returns 0.
> > +**/
> > +int isalnum (int c)
> > +{
> > + //
> > + // <alnum> ::= [0-9] | [a-z] | [A-Z]
> > + //
> > + return ((('0' <= (c)) && ((c) <= '9')) ||
> > + (('a' <= (c)) && ((c) <= 'z')) ||
> > + (('A' <= (c)) && ((c) <= 'Z')));
> > +}
> > +
> > +/**
> > + Determine if a particular character is a digital character
> > +
> > + @return Returns 1 if c is an digital character, otherwise returns 0.
> > +**/
> > +int isdchar (int c)
> > +{
> > + //
> > + // [0-9] | [e +-.]
> > + //
> > + return ((('0' <= (c)) && ((c) <= '9')) ||
> > + (c == 'e') || (c == 'E') ||
> > + (c == '+') || (c == '-') ||
> > + (c == '.'));
> > +}
> > +
> > +/**
> > + Determine if a particular character is a space character
> > +
> > + @return Returns 1 if c is a space character
> > +**/
> > +int isspace (int c)
> > +{
> > + //
> > + // <space> ::= [ ]
> > + //
> > + return ((c) == ' ') || ((c) == '\t') || ((c) == '\r') || ((c) == '\n') || ((c) == '\v')
> || ((c) == '\f');
> > +}
> > +
> > +/**
> > + Allocates memory blocks
> > +*/
> > +void *malloc (size_t size)
> > +{
> > + return AllocatePool ((UINTN) size);
> > +}
> > +
> > +/**
> > + De-allocates or frees a memory block
> > +*/
> > +void free (void *ptr)
> > +{
> > + //
> > + // In Standard C, free() handles a null pointer argument transparently.
> This
> > + // is not true of FreePool() below, so protect it.
> > + //
> > + if (ptr != NULL) {
> > + FreePool (ptr);
> > + }
> > +}
> > +
> > +/**
> > + NetBSD Compatibility Function strdup creates a duplicate copy of a string.
> > +
> > + @return Returns the pointer to duplicated string.
> > +**/
> > +char * strdup(const char *str)
> > +{
> > + size_t len;
> > + char *copy;
> > +
> > + len = strlen(str) + 1;
> > + if ((copy = malloc(len)) == NULL)
> > + return (NULL);
> > + memcpy(copy, str, len);
> > + return (copy);
> > +}
> > +
> > +/** The toupper function converts a lowercase letter to a corresponding
> > + uppercase letter.
> > +
> > + @param[in] c The character to be converted.
> > +
> > + @return If the argument is a character for which islower is true and
> > + there are one or more corresponding characters, as specified by
> > + the current locale, for which isupper is true, the toupper
> > + function returns one of the corresponding characters (always the
> > + same one for any given locale); otherwise, the argument is
> > + returned unchanged.
> > +**/
> > +int
> > +toupper(
> > + IN int c
> > + )
> > +{
> > + if ( (c >= 'a') && (c <= 'z') ) {
> > + c = c - ('a' - 'A');
> > + }
> > + return c;
> > +}
> > +
> > +/**
> > + Digit to a value.
> > +
> > + @return Returns the value of digit.
> > +**/
> > +int
> > +Digit2Val( int c)
> > +{
> > + if (((c >= 'a') && (c <= 'z')) || ((c >= 'A') && (c <= 'Z'))) { /* If c is one of [A-
> Za-z]... */
> > + c = toupper(c) - 7; // Adjust so 'A' is ('9' + 1)
> > + }
> > + return c - '0'; // Value returned is between 0 and 35, inclusive.
> > +}
> > +
> > +
> > +/** The strtoll function converts the initial portion of the string pointed to
> > + by nptr to long long int representation.
> > +
> > + See the description for strtol for more information.
> > +
> > + @return The strtoll function returns the converted value, if any. If no
> > + conversion could be performed, zero is returned. If the correct
> > + value is outside the range of representable values, LLONG_MIN or
> > + LLONG_MAX is returned (according to the sign of the value, if any),
> > + and the value of the macro ERANGE is stored in errno.
> > +**/
> > +long long
> > +strtoll(const char * nptr, char ** endptr, int base)
> > +{
> > + const char *pEnd;
> > + long long Result = 0;
> > + long long Previous;
> > + int temp;
> > + BOOLEAN Negative = FALSE;
> > +
> > + pEnd = nptr;
> > +
> > + if((base < 0) || (base == 1) || (base > 36)) {
> > + if(endptr != NULL) {
> > + *endptr = NULL;
> > + }
> > + return 0;
> > + }
> > + // Skip leading spaces.
> > + while(isspace(*nptr)) ++nptr;
> > +
> > + // Process Subject sequence: optional sign followed by digits.
> > + if(*nptr == '+') {
> > + Negative = FALSE;
> > + ++nptr;
> > + }
> > + else if(*nptr == '-') {
> > + Negative = TRUE;
> > + ++nptr;
> > + }
> > +
> > + if(*nptr == '0') { /* Might be Octal or Hex */
> > + if(toupper(nptr[1]) == 'X') { /* Looks like Hex */
> > + if((base == 0) || (base == 16)) {
> > + nptr += 2; /* Skip the "0X" */
> > + base = 16; /* In case base was 0 */
> > + }
> > + }
> > + else { /* Looks like Octal */
> > + if((base == 0) || (base == 8)) {
> > + ++nptr; /* Skip the leading "0" */
> > + base = 8; /* In case base was 0 */
> > + }
> > + }
> > + }
> > + if(base == 0) { /* If still zero then must be decimal */
> > + base = 10;
> > + }
> > + if(*nptr == '0') {
> > + for( ; *nptr == '0'; ++nptr); /* Skip any remaining leading zeros */
> > + pEnd = nptr;
> > + }
> > +
> > + while( isalnum(*nptr) && ((temp = Digit2Val(*nptr)) < base)) {
> > + Previous = Result;
> > + Result = MultS64x64 (Result, base) + (long long int)temp;
> > + if( Result <= Previous) { // Detect Overflow
> > + if(Negative) {
> > + Result = LLONG_MIN;
> > + }
> > + else {
> > + Result = LLONG_MAX;
> > + }
> > + Negative = FALSE;
> > + errno = ERANGE;
> > + break;
> > + }
> > + pEnd = ++nptr;
> > + }
> > + if(Negative) {
> > + Result = -Result;
> > + }
> > +
> > + // Save pointer to final sequence
> > + if(endptr != NULL) {
> > + *endptr = (char *)pEnd;
> > + }
> > + return Result;
> > +}
> > +
> > +/** The strtol, strtoll, strtoul, and strtoull functions convert the initial
> > + portion of the string pointed to by nptr to long int, long long int,
> > + unsigned long int, and unsigned long long int representation,
> respectively.
> > + First, they decompose the input string into three parts: an initial,
> > + possibly empty, sequence of white-space characters (as specified by
> the
> > + isspace function), a subject sequence resembling an integer
> represented in
> > + some radix determined by the value of base, and a final string of one or
> > + more unrecognized characters, including the terminating null character
> of
> > + the input string. Then, they attempt to convert the subject sequence to
> an
> > + integer, and return the result.
> > +
> > + If the value of base is zero, the expected form of the subject sequence
> is
> > + that of an integer constant, optionally preceded
> > + by a plus or minus sign, but not including an integer suffix. If the value
> > + of base is between 2 and 36 (inclusive), the expected form of the
> subject
> > + sequence is a sequence of letters and digits representing an integer
> with
> > + the radix specified by base, optionally preceded by a plus or minus sign,
> > + but not including an integer suffix. The letters from a (or A) through z
> > + (or Z) are ascribed the values 10 through 35; only letters and digits
> whose
> > + ascribed values are less than that of base are permitted. If the value of
> > + base is 16, the characters 0x or 0X may optionally precede the sequence
> of
> > + letters and digits, following the sign if present.
> > +
> > + The subject sequence is defined as the longest initial subsequence of
> the
> > + input string, starting with the first non-white-space character, that is of
> > + the expected form. The subject sequence contains no characters if the
> input
> > + string is empty or consists entirely of white space, or if the first
> > + non-white-space character is other than a sign or a permissible letter or
> digit.
> > +
> > + If the subject sequence has the expected form and the value of base is
> > + zero, the sequence of characters starting with the first digit is
> > + interpreted as an integer constant. If the subject sequence has the
> > + expected form and the value of base is between 2 and 36, it is used as
> the
> > + base for conversion, ascribing to each letter its value as given above. If
> > + the subject sequence begins with a minus sign, the value resulting from
> the
> > + conversion is negated (in the return type). A pointer to the final string
> > + is stored in the object pointed to by endptr, provided that endptr is
> > + not a null pointer.
> > +
> > + In other than the "C" locale, additional locale-specific subject sequence
> > + forms may be accepted.
> > +
> > + If the subject sequence is empty or does not have the expected form,
> no
> > + conversion is performed; the value of nptr is stored in the object
> pointed
> > + to by endptr, provided that endptr is not a null pointer.
> > +
> > + @return The strtol, strtoll, strtoul, and strtoull functions return the
> > + converted value, if any. If no conversion could be performed, zero
> > + is returned. If the correct value is outside the range of
> > + representable values, LONG_MIN, LONG_MAX, LLONG_MIN,
> LLONG_MAX,
> > + ULONG_MAX, or ULLONG_MAX is returned (according to the return
> type
> > + and sign of the value, if any), and the value of the macro ERANGE
> > + is stored in errno.
> > +**/
> > +long
> > +strtol(const char * nptr, char ** endptr, int base)
> > +{
> > + const char *pEnd;
> > + long Result = 0;
> > + long Previous;
> > + int temp;
> > + BOOLEAN Negative = FALSE;
> > +
> > + pEnd = nptr;
> > +
> > + if((base < 0) || (base == 1) || (base > 36)) {
> > + if(endptr != NULL) {
> > + *endptr = NULL;
> > + }
> > + return 0;
> > + }
> > + // Skip leading spaces.
> > + while(isspace(*nptr)) ++nptr;
> > +
> > + // Process Subject sequence: optional sign followed by digits.
> > + if(*nptr == '+') {
> > + Negative = FALSE;
> > + ++nptr;
> > + }
> > + else if(*nptr == '-') {
> > + Negative = TRUE;
> > + ++nptr;
> > + }
> > +
> > + if(*nptr == '0') { /* Might be Octal or Hex */
> > + if(toupper(nptr[1]) == 'X') { /* Looks like Hex */
> > + if((base == 0) || (base == 16)) {
> > + nptr += 2; /* Skip the "0X" */
> > + base = 16; /* In case base was 0 */
> > + }
> > + }
> > + else { /* Looks like Octal */
> > + if((base == 0) || (base == 8)) {
> > + ++nptr; /* Skip the leading "0" */
> > + base = 8; /* In case base was 0 */
> > + }
> > + }
> > + }
> > + if(base == 0) { /* If still zero then must be decimal */
> > + base = 10;
> > + }
> > + if(*nptr == '0') {
> > + for( ; *nptr == '0'; ++nptr); /* Skip any remaining leading zeros */
> > + pEnd = nptr;
> > + }
> > +
> > + while( isalnum(*nptr) && ((temp = Digit2Val(*nptr)) < base)) {
> > + Previous = Result;
> > + Result = (Result * base) + (long int)temp;
> > + if( Result <= Previous) { // Detect Overflow
> > + if(Negative) {
> > + Result = LONG_MIN;
> > + }
> > + else {
> > + Result = LONG_MAX;
> > + }
> > + Negative = FALSE;
> > + errno = ERANGE;
> > + break;
> > + }
> > + pEnd = ++nptr;
> > + }
> > + if(Negative) {
> > + Result = -Result;
> > + }
> > +
> > + // Save pointer to final sequence
> > + if(endptr != NULL) {
> > + *endptr = (char *)pEnd;
> > + }
> > + return Result;
> > +}
> > +
> > +/** The strtoull function converts the initial portion of the string pointed
> to
> > + by nptr to unsigned long long int representation.
> > +
> > + See the description for strtol for more information.
> > +
> > + @return The strtoull function returns the converted value, if any. If no
> > + conversion could be performed, zero is returned. If the correct
> > + value is outside the range of representable values, ULLONG_MAX is
> > + returned and the value of the macro ERANGE is stored in errno.
> > +**/
> > +unsigned long long
> > +strtoull(const char * nptr, char ** endptr, int base)
> > +{
> > + const char *pEnd;
> > + unsigned long long Result = 0;
> > + unsigned long long Previous;
> > + int temp;
> > +
> > + pEnd = nptr;
> > +
> > + if((base < 0) || (base == 1) || (base > 36)) {
> > + if(endptr != NULL) {
> > + *endptr = NULL;
> > + }
> > + return 0;
> > + }
> > + // Skip leading spaces.
> > + while(isspace(*nptr)) ++nptr;
> > +
> > + // Process Subject sequence: optional + sign followed by digits.
> > + if(*nptr == '+') {
> > + ++nptr;
> > + }
> > +
> > + if(*nptr == '0') { /* Might be Octal or Hex */
> > + if(toupper(nptr[1]) == 'X') { /* Looks like Hex */
> > + if((base == 0) || (base == 16)) {
> > + nptr += 2; /* Skip the "0X" */
> > + base = 16; /* In case base was 0 */
> > + }
> > + }
> > + else { /* Looks like Octal */
> > + if((base == 0) || (base == 8)) {
> > + ++nptr; /* Skip the leading "0" */
> > + base = 8; /* In case base was 0 */
> > + }
> > + }
> > + }
> > + if(base == 0) { /* If still zero then must be decimal */
> > + base = 10;
> > + }
> > + if(*nptr == '0') {
> > + for( ; *nptr == '0'; ++nptr); /* Skip any remaining leading zeros */
> > + pEnd = nptr;
> > + }
> > +
> > + while( isalnum(*nptr) && ((temp = Digit2Val(*nptr)) < base)) {
> > + Previous = Result;
> > + Result = DivU64x32 (Result, base) + (unsigned long long)temp;
> > + if( Result < Previous) { // If we overflowed
> > + Result = ULLONG_MAX;
> > + errno = ERANGE;
> > + break;
> > + }
> > + pEnd = ++nptr;
> > + }
> > +
> > + // Save pointer to final sequence
> > + if(endptr != NULL) {
> > + *endptr = (char *)pEnd;
> > + }
> > + return Result;
> > +}
> > +
> > +/**
> > + edk2 Jansson port does not support doubles, simply return 0.
> > +
> > + These conversion functions convert the initial portion of the string
> > + pointed to by nptr to double, float, and long double representation,
> > + respectively.
> > +
> > + The strtod(), strtof(), and strtold() functions return the converted
> > + value, if any.
> > +
> > + If endptr is not NULL, a pointer to the character after the last charac-
> > + ter used in the conversion is stored in the location referenced by
> > + endptr.
> > +
> > + If no conversion is performed, zero is returned and the value of nptr is
> > + stored in the location referenced by endptr.
> > +
> > + If the correct value would cause overflow, plus or minus HUGE_VAL,
> > + HUGE_VALF, or HUGE_VALL is returned (according to the sign and type
> of
> > + the return value), and ERANGE is stored in errno. If the correct value
> > + would cause underflow, zero is returned and ERANGE is stored in errno.
> > +
> > + @return Return 0.
> > +**/
> > +double
> > +strtod (const char * __restrict nptr, char ** __restrict endptr) {
> > + if(endptr)
> > + *endptr = (char *)(nptr + strlen(nptr));
> > +
> > + return (double)0;
> > +}
> > +
> > +/**
> > + Allocate and zero-initialize array.
> > +**/
> > +void *
> > +calloc(size_t Num, size_t Size)
> > +{
> > + void *RetVal;
> > + size_t NumSize;
> > +
> > + NumSize = Num * Size;
> > + RetVal = NULL;
> > + if (NumSize != 0) {
> > + RetVal = malloc(NumSize);
> > + if( RetVal != NULL) {
> > + (VOID)ZeroMem( RetVal, NumSize);
> > + }
> > + }
> > + DEBUG((DEBUG_POOL, "0x%p = calloc(%d, %d)\n", RetVal, Num, Size));
> > +
> > + return RetVal;
> > +}
> > +
> > +//
> > +// The arrays give the cumulative number of days up to the first of the
> > +// month number used as the index (1 -> 12) for regular and leap years.
> > +// The value at index 13 is for the whole year.
> > +//
> > +UINTN CumulativeDays[2][14] = {
> > + {
> > + 0,
> > + 0,
> > + 31,
> > + 31 + 28,
> > + 31 + 28 + 31,
> > + 31 + 28 + 31 + 30,
> > + 31 + 28 + 31 + 30 + 31,
> > + 31 + 28 + 31 + 30 + 31 + 30,
> > + 31 + 28 + 31 + 30 + 31 + 30 + 31,
> > + 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31,
> > + 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
> > + 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
> > + 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
> > + 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31
> > + },
> > + {
> > + 0,
> > + 0,
> > + 31,
> > + 31 + 29,
> > + 31 + 29 + 31,
> > + 31 + 29 + 31 + 30,
> > + 31 + 29 + 31 + 30 + 31,
> > + 31 + 29 + 31 + 30 + 31 + 30,
> > + 31 + 29 + 31 + 30 + 31 + 30 + 31,
> > + 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31,
> > + 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
> > + 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
> > + 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
> > + 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31
> > + }
> > +};
> > +
> > +#define IsLeap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
> > +#define SECSPERMIN (60)
> > +#define SECSPERHOUR (60 * 60)
> > +#define SECSPERDAY (24 * SECSPERHOUR)
> > +
> > +/**
> > + Get the system time as seconds elapsed since midnight, January 1, 1970.
> > +**/
> > +time_t time (time_t *timer)
> > +{
> > + EFI_TIME Time;
> > + time_t CalTime;
> > + UINTN Year;
> > +
> > + //
> > + // Get the current time and date information
> > + //
> > + gRT->GetTime (&Time, NULL);
> > +
> > + //
> > + // Years Handling
> > + // UTime should now be set to 00:00:00 on Jan 1 of the current year.
> > + //
> > + for (Year = 1970, CalTime = 0; Year != Time.Year; Year++) {
> > + CalTime = CalTime + (time_t)(CumulativeDays[IsLeap(Year)][13] *
> SECSPERDAY);
> > + }
> > +
> > + //
> > + // Add in number of seconds for current Month, Day, Hour, Minute,
> Seconds, and TimeZone adjustment
> > + //
> > + CalTime = CalTime +
> > + (time_t)((Time.TimeZone != EFI_UNSPECIFIED_TIMEZONE) ?
> (Time.TimeZone * 60) : 0) +
> > + (time_t)(CumulativeDays[IsLeap(Time.Year)][Time.Month] *
> SECSPERDAY) +
> > + (time_t)(((Time.Day > 0) ? Time.Day - 1 : 0) * SECSPERDAY) +
> > + (time_t)(Time.Hour * SECSPERHOUR) +
> > + (time_t)(Time.Minute * 60) +
> > + (time_t)Time.Second;
> > +
> > + if (timer != NULL) {
> > + *timer = CalTime;
> > + }
> > +
> > + return CalTime;
> > +}
> > +
> > +typedef
> > +int
> > +(*SORT_COMPARE)(
> > + IN VOID *Buffer1,
> > + IN VOID *Buffer2
> > + );
> > +
> > +/**
> > + Duplicated from EDKII BaseSortLib for qsort() wrapper
> > + @param[in, out] BufferToSort on call a Buffer of (possibly sorted)
> elements
> > + on return a buffer of sorted elements
> > + @param[in] Count the number of elements in the buffer to sort
> > + @param[in] ElementSize Size of an element in bytes
> > + @param[in] CompareFunction The function to call to perform the
> comparison
> > + of any 2 elements
> > + @param[in] Buffer Buffer of size ElementSize for use in swapping
> > +**/
> > +STATIC
> > +VOID
> > +QuickSortWorker (
> > + IN OUT VOID *BufferToSort,
> > + IN CONST UINTN Count,
> > + IN CONST UINTN ElementSize,
> > + IN SORT_COMPARE CompareFunction,
> > + IN VOID *Buffer
> > + )
> > +{
> > + VOID *Pivot;
> > + UINTN LoopCount;
> > + UINTN NextSwapLocation;
> > +
> > + ASSERT(BufferToSort != NULL);
> > + ASSERT(CompareFunction != NULL);
> > + ASSERT(Buffer != NULL);
> > +
> > + if (Count < 2 || ElementSize < 1) {
> > + return;
> > + }
> > +
> > + NextSwapLocation = 0;
> > +
> > + //
> > + // Pick a pivot (we choose last element)
> > + //
> > + Pivot = ((UINT8 *)BufferToSort + ((Count - 1) * ElementSize));
> > +
> > + //
> > + // Now get the pivot such that all on "left" are below it
> > + // and everything "right" are above it
> > + //
> > + for (LoopCount = 0; LoopCount < Count - 1; LoopCount++)
> > + {
> > + //
> > + // If the element is less than the pivot
> > + //
> > + if (CompareFunction ((VOID *)((UINT8 *)BufferToSort + ((LoopCount) *
> ElementSize)), Pivot) <= 0) {
> > + //
> > + // Swap
> > + //
> > + CopyMem (Buffer, (UINT8 *)BufferToSort + (NextSwapLocation *
> ElementSize), ElementSize);
> > + CopyMem ((UINT8 *)BufferToSort + (NextSwapLocation *
> ElementSize), (UINT8 *)BufferToSort + ((LoopCount) * ElementSize),
> ElementSize);
> > + CopyMem ((UINT8 *)BufferToSort + ((LoopCount) * ElementSize),
> Buffer, ElementSize);
> > +
> > + //
> > + // Increment NextSwapLocation
> > + //
> > + NextSwapLocation++;
> > + }
> > + }
> > + //
> > + // Swap pivot to it's final position (NextSwapLocaiton)
> > + //
> > + CopyMem (Buffer, Pivot, ElementSize);
> > + CopyMem (Pivot, (UINT8 *)BufferToSort + (NextSwapLocation *
> ElementSize), ElementSize);
> > + CopyMem ((UINT8 *)BufferToSort + (NextSwapLocation * ElementSize),
> Buffer, ElementSize);
> > +
> > + //
> > + // Now recurse on 2 paritial lists. Neither of these will have the 'pivot'
> element.
> > + // IE list is sorted left half, pivot element, sorted right half...
> > + //
> > + QuickSortWorker (
> > + BufferToSort,
> > + NextSwapLocation,
> > + ElementSize,
> > + CompareFunction,
> > + Buffer
> > + );
> > +
> > + QuickSortWorker (
> > + (UINT8 *)BufferToSort + (NextSwapLocation + 1) * ElementSize,
> > + Count - NextSwapLocation - 1,
> > + ElementSize,
> > + CompareFunction,
> > + Buffer
> > + );
> > +
> > + return;
> > +}
> > +
> > +/**
> > + Performs a quick sort
> > +**/
> > +void qsort (void *base, size_t num, size_t width, int (*compare)(const
> void *, const void *))
> > +{
> > + VOID *Buffer;
> > +
> > + ASSERT (base != NULL);
> > + ASSERT (compare != NULL);
> > +
> > + //
> > + // Use CRT-style malloc to cover BS and RT memory allocation.
> > + //
> > + Buffer = malloc (width);
> > + ASSERT (Buffer != NULL);
> > +
> > + //
> > + // Re-use PerformQuickSort() function Implementation in EDKII
> BaseSortLib.
> > + //
> > + QuickSortWorker (base, (UINTN)num, (UINTN)width,
> (SORT_COMPARE)compare, Buffer);
> > +
> > + free (Buffer);
> > + return;
> > +}
> > +
> > +/**
> > + Get character from stream, we don't support file operastion on edk2
> JSON library.
> > +
> > + @return Returns the character currently pointed by the internal file
> position indicator of the specified stream
> > +
> > +**/
> > +int fgetc(FILE * _File){
> > + return 0;
> > +}
> > diff --git a/RedfishPkg/Library/JsonLib/JanssonCrtLibSupport.h
> b/RedfishPkg/Library/JsonLib/JanssonCrtLibSupport.h
> > new file mode 100644
> > index 0000000000..40a98e485c
> > --- /dev/null
> > +++ b/RedfishPkg/Library/JsonLib/JanssonCrtLibSupport.h
> > @@ -0,0 +1,196 @@
> > +/** @file
> > + CRT wrapper head functions for jansson system call.
> > +
> > + Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
> > + (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
> > +
> > + SPDX-License-Identifier: BSD-2-Clause-Patent
> > +
> > +**/
> > +
> > +#ifndef JANSSON_CRT_LIB_SUPPORT_H_
> > +#define JANSSON_CRT_LIB_SUPPORT_H_
> > +
> > +#include <Library/BaseLib.h>
> > +#include <Library/BaseMemoryLib.h>
> > +#include <Library/DebugLib.h>
> > +#include <Library/PrintLib.h>
> > +
> > +#define MAX_STRING_SIZE 0x10000000
> > +
> > +// Minimum value for an object of type long long int.
> > +#define LLONG_MIN (-9223372036854775807LL - 1LL) // -(2^63 - 1)
>
> MIN_INT64
Define MIN_IN64 for "(-9223372036854775807LL - 1LL)
>
> > +
> > +// Maximum value for an object of type long long int.
> > +#define LLONG_MAX 9223372036854775807LL // 2^63 - 1
>
> MAX_INT64
Define MAX _IN64 for "(9223372036854775807LL - 1LL)"?
>
> > +
> > +// We dont support double on edk2
> > +#define HUGE_VAL 0
> > +
> > +#if defined(MDE_CPU_X64) || defined(MDE_CPU_AARCH64) ||
> defined(MDE_CPU_IA64) || defined(MDE_CPU_RISCV64)
> > +//
> > +// With GCC we would normally use SIXTY_FOUR_BIT_LONG, but MSVC
> needs
> > +// SIXTY_FOUR_BIT, because 'long' is 32-bit and only 'long long' is
> > +// 64-bit. Since using 'long long' works fine on GCC too, just do that.
> > +//
> > +#define SIXTY_FOUR_BIT
> > +#elif defined(MDE_CPU_IA32) || defined(MDE_CPU_ARM) ||
> defined(MDE_CPU_EBC)
> > +#define THIRTY_TWO_BIT
> > +#endif
> > +
> > +//
> > +// Map all va_xxxx elements to VA_xxx defined in
> MdePkg/Include/Base.h
> > +//
> > +#if !defined(__CC_ARM) // if va_list is not already defined
> > +#define va_list VA_LIST
> > +#define va_arg VA_ARG
> > +#define va_start VA_START
> > +#define va_end VA_END
> > +#else // __CC_ARM
> > +#define va_start(Marker, Parameter) __va_start(Marker, Parameter)
> > +#define va_arg(Marker, TYPE) __va_arg(Marker, TYPE)
> > +#define va_end(Marker) ((void)0)
> > +#endif
> > +
> > +//
> > +// Definitions for global constants used by CRT library routines
> > +//
> > +#define EINVAL 22 /* Invalid argument */
> > +#define INT_MAX 0x7FFFFFFF /* Maximum (signed) int value */
> > +#define LONG_MAX 0X7FFFFFFFL /* max value for a long */
> > +#define LONG_MIN (-LONG_MAX-1) /* min value for a long */
> > +#define ULONG_MAX 0xFFFFFFFF /* Maximum unsigned long value
> */
> > +#define CHAR_BIT 8 /* Number of bits in a char */
>
> Take from ProcessorBind.h?
> EINVAL should be separated frome variable properties by at least a
> blank line.
Will check this.
>
> > +
> > +// Maximum value for an object of type unsigned long long int.
> > +#define ULLONG_MAX 0xFFFFFFFFFFFFFFFFULL // 2^64 - 1
> > +// Maximum value for an object of type unsigned char.
> > +#define UCHAR_MAX 255 // 2^8 - 1
> > +
> > +//
> > +// Basic types mapping
> > +//
> > +typedef UINTN size_t;
> > +typedef INTN ssize_t;
> > +typedef INT32 time_t;
> > +typedef UINT8 __uint8_t;
> > +typedef UINT8 sa_family_t;
> > +typedef UINT32 uid_t;
> > +typedef UINT32 gid_t;
> > +typedef INT32 int32_t;
> > +typedef UINT32 uint32_t;
> > +typedef UINT16 uint16_t;
> > +typedef UINT8 uint8_t;
> > +typedef enum {false, true} bool;
> > +
> > +//
> > +// File operations are not required for EFI building,
> > +// so FILE is mapped to VOID * to pass build
> > +//
> > +typedef VOID *FILE;
> > +
> > +//
> > +// Global variables
> > +//
> > +extern int errno;
> > +extern FILE *stderr;
> > +
> > +//
> > +// Function prototypes of CRT Library routines
> > +//
> > +void *malloc (size_t);
> > +void *realloc (void *, size_t);
> > +void *calloc (size_t Num, size_t Size);
> > +void free (void *);
> > +void *memset (void *, int, size_t);
> > +int memcmp (const void *, const void *, size_t);
> > +int isdigit (int);
> > +int isspace (int);
> > +int tolower (int);
> > +int isupper (int);
> > +int isxdigit (int);
> > +int isalnum (int);
> > +void *memcpy (void *, const void *, size_t);
> > +void *memset (void *, int, size_t);
> > +void *memchr (const void *, int, size_t);
> > +int memcmp (const void *, const void *, size_t);
> > +void *memmove (void *, const void *, size_t);
> > +int strcmp (const char *, const char *);
> > +int strncmp (const char *, const char *, size_t);
> > +char *strcpy (char *, const char *);
> > +size_t strlen (const char *);
> > +char *strcat (char *, const char *);
> > +char *strchr (const char *, int);
> > +int strcasecmp (const char *, const char *);
> > +int strncasecmp (const char *, const char *, size_t);
> > +char *strncpy (char *, size_t, const char *, size_t);
> > +int strncmp (const char *, const char *, size_t);
> > +char *strrchr (const char *, int);
> > +unsigned long strtoul (const char *, char **, int);
> > +char * strstr (const char *s1 , const char *s2);
> > +long strtol (const char *, char **, int);
> > +char *strerror (int);
> > +size_t strspn (const char *, const char *);
> > +char * strdup (const char *str);
> > +char * strpbrk (const char *s1, const char *s2);
> > +unsigned long long strtoull(const char * nptr, char ** endptr, int base);
> > +long long strtoll (const char * nptr, char ** endptr, int base);
> > +long strtol (const char * nptr, char ** endptr, int base);
> > +double strtod (const char * __restrict nptr, char ** __restrict
> endptr);
> > +size_t strcspn (const char *, const char *);
> > +int printf (const char *, ...);
> > +int sscanf (const char *, const char *, ...);
> > +FILE *fopen (const char *, const char *);
> > +size_t fread (void *, size_t, size_t, FILE *);
> > +size_t fwrite (const void *, size_t, size_t, FILE *);
> > +int fclose (FILE *);
> > +int fprintf (FILE *, const char *, ...);
> > +int fgetc (FILE * _File);
> > +uid_t getuid (void);
> > +uid_t geteuid (void);
> > +gid_t getgid (void);
> > +gid_t getegid (void);
> > +void qsort (void *, size_t, size_t, int (*)(const void *, const void
> *));
> > +char *getenv (const char *);
> > +#if defined(__GNUC__) && (__GNUC__ >= 2)
> > +void abort (void) __attribute__((__noreturn__));
> > +#else
> > +void abort (void);
> > +#endif
> > +int toupper (int);
> > +int Digit2Val (int);
> > +time_t time (time_t *);
> > +
> > +//
> > +// Macros that directly map functions to BaseLib, BaseMemoryLib, and
> DebugLib functions
> > +//
> > +#define strcmp AsciiStrCmp
> > +#define memcpy(dest,source,count)
> CopyMem(dest,source,(UINTN)(count))
> > +#define memset(dest,ch,count)
> SetMem(dest,(UINTN)(count),(UINT8)(ch))
> > +#define memchr(buf,ch,count)
> ScanMem8(buf,(UINTN)(count),(UINT8)ch)
> > +#define memcmp(buf1,buf2,count)
> (int)(CompareMem(buf1,buf2,(UINTN)(count)))
> > +#define memmove(dest,source,count)
> CopyMem(dest,source,(UINTN)(count))
> > +#define strlen(str)
> (size_t)(AsciiStrnLenS(str,MAX_STRING_SIZE))
> > +#define strcpy(strDest,strSource)
> AsciiStrCpyS(strDest,(strlen(strSource)+1),strSource)
> > +#define strncpy(strDest,strSource,count)
> AsciiStrnCpyS(strDest,(UINTN)count,strSource,(UINTN)count)
> > +#define strncpys(strDest, DestLen, strSource,count)
> AsciiStrnCpyS(strDest,DestLen,strSource,(UINTN)count)
> > +#define strcat(strDest,strSource)
> AsciiStrCatS(strDest,(strlen(strSource)+strlen(strDest)+1),strSource)
> > +#define strchr(str,ch) ScanMem8((VOID
> *)(str),AsciiStrSize(str),(UINT8)ch)
> > +#define strncmp(string1,string2,count)
> (int)(AsciiStrnCmp(string1,string2,(UINTN)(count)))
> > +#define strcasecmp(str1,str2) (int)AsciiStriCmp(str1,str2)
> > +#define strstr(s1,s2) AsciiStrStr(s1,s2)
> > +#define sprintf(buf,...)
> AsciiSPrint(buf,MAX_STRING_SIZE,__VA_ARGS__)
> > +#define snprintf(buf,len,...) AsciiSPrint(buf,len,__VA_ARGS__)
> > +#define vsnprintf(buf,len,format,marker)
> AsciiVSPrint((buf),(len),(format),(marker))
> > +#define assert(expression)
>
> Not ASSERT?
Will add ASSERT to this macro.
>
> > +#define atoi(nptr) AsciiStrDecimalToUintn(nptr)
> > +#define fabs(x) (((x)<0.0)?(-x):(x))
>
> Indentation.
ok
>
> > +#define offsetof(type,member) OFFSET_OF(type,member)
> > +
> > +#define EOF (-1)
> > +
> > +extern int errno;
> > +
> > +#define ERANGE 34 /* 34 Result too large */
> > +
> > +#endif
> > diff --git a/RedfishPkg/Library/JsonLib/JsonLib.c
> b/RedfishPkg/Library/JsonLib/JsonLib.c
> > new file mode 100644
> > index 0000000000..3fa834add3
> > --- /dev/null
> > +++ b/RedfishPkg/Library/JsonLib/JsonLib.c
> > @@ -0,0 +1,960 @@
> > +/** @file
> > + APIs for JSON operations.
> > +
> > + Copyright (c) 2018 - 2019, Intel Corporation. All rights reserved.<BR>
> > + (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
> > +
> > + SPDX-License-Identifier: BSD-2-Clause-Patent
> > +**/
> > +
> > +#include <Library/JsonLib.h>
> > +#include "JsonUtilities.h"
> > +
> > +/**
> > + The function is used to convert a NULL terminated UTF8 encoded string
> to a JSON
> > + value. Only object and array represented strings can be converted
> successfully,
> > + since they are the only valid root values of a JSON text for UEFI usage.
> > +
> > + Real number and number with exponent part are not supportted by UEFI.
> > +
> > + Caller needs to cleanup the root value by calling JsonValueFree().
> > +
> > + @param[in] Text The NULL terminated UTF8 encoded string to
> convert
> > +
> > + @retval Array JSON value or object JSON value, or NULL when any
> error occurs.
> > +
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +TextToJson (
> > + IN CHAR8* Text
> > + )
> > +{
> > + json_error_t JsonError;
> > +
> > + return (EDKII_JSON_VALUE) json_loads (Text, 0, &JsonError);
> > +}
> > +
> > +/**
> > + The function is used to convert the JSON root value to a UTF8 encoded
> string which
> > + is terminated by NULL, or return NULL on error.
> > +
> > + Only array JSON value or object JSON value is valid for converting, and
> caller is
> > + responsible for free converted string.
> > +
> > + @param[in] Json The JSON value to be converted
> > +
> > + @retval The JSON value converted UTF8 string or NULL.
> > +
> > +**/
> > +CHAR8*
> > +EFIAPI
> > +JsonToText (
> > + IN EDKII_JSON_VALUE Json
> > + )
> > +{
> > + if (!JsonValueIsArray (Json) && !JsonValueIsObject (Json)) {
> > + return NULL;
> > + }
> > +
> > + return json_dumps ((json_t *) Json, 0);
>
> No space after cast (please sanity check throughout).
ok
>
> > +}
> > +
> > +/**
> > + The function is used to initialize a JSON value which contains a new JSON
> array,
> > + or NULL on error. Initially, the array is empty.
> > +
> > + The reference count of this value will be set to 1, and caller needs to
> cleanup the
> > + value by calling JsonValueFree().
> > +
> > + More details for reference count strategy can refer to the API
> description for JsonValueFree().
> > +
> > + @retval The created JSON value which contains a JSON array or NULL.
> > +
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonValueInitArray (
> > + VOID
> > + )
> > +{
> > + return (EDKII_JSON_VALUE) json_array();
> > +}
> > +
> > +/**
> > + The function is used to initialize a JSON value which contains a new JSON
> object,
> > + or NULL on error. Initially, the object is empty.
> > +
> > + The reference count of this value will be set to 1, and caller needs to
> cleanup the
> > + value by calling JsonValueFree().
> > +
> > + More details for reference count strategy can refer to the API
> description for JsonValueFree().
> > +
> > + @retval The created JSON value which contains a JSON object or NULL.
> > +
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonValueInitObject (
> > + VOID
> > + )
> > +{
> > + return (EDKII_JSON_VALUE) json_object();
> > +}
> > +
> > +/**
> > + The function is used to initialize a JSON value which contains a new JSON
> string,
> > + or NULL on error.
> > +
> > + The input string must be NULL terminated Ascii format, non-Ascii
> characters will
> > + be processed as an error. Unicode characters can also be represented by
> Ascii string
> > + as the format: \u + 4 hexadecimal digits, like \u3E5A, or \u003F.
> > +
> > + The reference count of this value will be set to 1, and caller needs to
> cleanup the
> > + value by calling JsonValueFree().
> > +
> > + More details for reference count strategy can refer to the API
> description for JsonValueFree().
> > +
> > + @param[in] String The Ascii string to initialize to JSON value
> > +
> > + @retval The created JSON value which contains a JSON string or NULL.
> Select a
> > + Getter API for a specific encoding format.
> > +
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonValueInitAsciiString (
> > + IN CONST CHAR8 *String
> > + )
> > +{
> > + UINTN Index;
> > +
> > + if (String == NULL) {
> > + return NULL;
> > + }
> > +
> > + Index = 0;
> > + while (*(String + Index) != '\0') {
> > + if (((*(String + Index)) & 0x80) != 0x00) {
> > + return NULL;
> > + }
> > +
> > + Index ++;
>
> No space before ++.
ok
>
> > + }
> > +
> > + return (EDKII_JSON_VALUE) json_string (String);
> > +}
> > +
> > +/**
> > + The function is used to initialize a JSON value which contains a new JSON
> string,
> > + or NULL on error.
> > +
> > + The input must be a NULL terminated UCS2 format Unicode string.
> > +
> > + The reference count of this value will be set to 1, and caller needs to
> cleanup the
> > + value by calling JsonValueFree().
> > +
> > + More details for reference count strategy can refer to the API
> description for JsonValueFree().
> > +
> > + @param[in] String The Unicode string to initialize to JSON value
> > +
> > + @retval The created JSON value which contains a JSON string or NULL.
> Select a
> > + Getter API for a specific encoding format.
> > +
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonValueInitUnicodeString (
> > + IN CHAR16 *String
> > + )
> > +{
> > + EFI_STATUS Status;
> > + CHAR8 *Utf8Str;
> > +
> > + if (String == NULL) {
> > + return NULL;
> > + }
> > +
> > + Utf8Str = NULL;
> > + Status = UCS2StrToUTF8 (String, &Utf8Str);
> > + if (EFI_ERROR (Status)) {
> > + return NULL;
> > + }
> > +
> > + return (EDKII_JSON_VALUE) json_string (Utf8Str);
> > +}
> > +
> > +/**
> > + The function is used to initialize a JSON value which contains a new JSON
> integer,
> > + or NULL on error.
> > +
> > + The reference count of this value will be set to 1, and caller needs to
> cleanup the
> > + value by calling JsonValueFree().
> > +
> > + More details for reference count strategy can refer to the API
> description for JsonValueFree().
> > +
> > + @param[in] Value The integer to initialize to JSON value
> > +
> > + @retval The created JSON value which contains a JSON number or
> NULL.
> > +
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonValueInitNumber (
> > + IN INT64 Value
> > + )
> > +{
> > + return (EDKII_JSON_VALUE) json_integer (Value);
> > +}
> > +
> > +/**
> > + The function is used to initialize a JSON value which contains a new JSON
> boolean,
> > + or NULL on error.
> > +
> > + Boolean JSON value is kept as static value, and no need to do any
> cleanup work.
> > +
> > + @param[in] Value The boolean value to initialize.
> > +
> > + @retval The created JSON value which contains a JSON boolean or
> NULL.
> > +
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonValueInitBoolean (
> > + IN BOOLEAN Value
> > + )
> > +{
> > + return (EDKII_JSON_VALUE) json_boolean (Value);
> > +}
> > +
> > +/**
> > + The function is used to initialize a JSON value which contains a new JSON
> NULL,
> > + or NULL on error.
> > +
> > + NULL JSON value is kept as static value, and no need to do any cleanup
> work.
> > +
> > + @retval The created NULL JSON value.
> > +
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonValueInitNull (
> > + VOID
> > + )
> > +{
> > + return (EDKII_JSON_VALUE) json_null();
> > +}
> > +
> > +/**
> > + The function is used to decrease the reference count of a JSON value by
> one, and once
> > + this reference count drops to zero, the value is destroyed and it can no
> longer be used.
> > + If this destroyed value is object type or array type, reference counts for
> all containing
> > + JSON values will be decreased by 1. Boolean JSON value and NULL JSON
> value won't be destroyed
> > + since they are static values kept in memory.
> > +
> > + Reference Count Strategy: BaseJsonLib uses this strategy to track
> whether a value is still
> > + in use or not. When a value is created, it's reference count is set to 1. If a
> reference to a
> > + value is kept for use, its reference count is incremented, and when the
> value is no longer
> > + needed, the reference count is decremented. When the reference
> count drops to zero, there are
> > + no references left, and the value can be destroyed.
> > +
> > + The given JSON value maybe NULL and not causing any problem. Just
> output the debug message
> > + to inform caller the NULL value is passed in.
> > +
> > + @param[in] Json The JSON value to be freed. json_decref may
> return without any
> > + changes if Json is NULL.
> > +
> > +**/
> > +VOID
> > +EFIAPI
> > +JsonValueFree (
> > + IN EDKII_JSON_VALUE Json
> > + )
> > +{
> > + json_decref((json_t *)Json);
> > +}
> > +
> > +/**
> > + The function is used to create a fresh copy of a JSON value, and all child
> values are deep
> > + copied in a recursive fashion. It should be called when this JSON value
> might be modified
> > + in later use, but the original still wants to be used in somewhere else.
> > +
> > + Reference counts of the returned root JSON value and all child values will
> be set to 1, and
> > + caller needs to cleanup the root value by calling JsonValueFree().
> > +
> > + * Note: Since this function performs a copy from bottom to up, too many
> calls may cause some
> > + performance issues, user should avoid unnecessary calls to this function
> unless it is really
> > + needed.
> > +
> > + @param[in] Json The JSON value to be cloned.
> > +
> > + @retval Return the cloned JSON value, or NULL on error.
> > +
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonValueClone (
> > + IN EDKII_JSON_VALUE Json
> > + )
> > +{
> > + return (EDKII_JSON_VALUE) json_deep_copy ((json_t *) Json);
> > +}
> > +
> > +/**
> > + The function is used to return if the provided JSON value contains a JSON
> array.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval TRUE The JSON value contains a JSON array.
> > + @retval FALSE The JSON value doesn't contain a JSON array.
> > +
> > +**/
> > +BOOLEAN
> > +EFIAPI
> > +JsonValueIsArray (
> > + IN EDKII_JSON_VALUE Json
> > + )
> > +{
> > + return json_is_array ((json_t *) Json);
> > +}
> > +
> > +/**
> > + The function is used to return if the provided JSON value contains a JSON
> object.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval TRUE The JSON value contains a JSON object.
> > + @retval FALSE The JSON value doesn't contain a JSON object.
> > +
> > +**/
> > +BOOLEAN
> > +EFIAPI
> > +JsonValueIsObject (
> > + IN EDKII_JSON_VALUE Json
> > + )
> > +{
> > + return json_is_object ((json_t *) Json);
> > +}
> > +
> > +/**
> > + The function is used to return if the provided JSON Value contains a
> string, Ascii or
> > + Unicode format is not differentiated.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval TRUE The JSON value contains a JSON string.
> > + @retval FALSE The JSON value doesn't contain a JSON string.
> > +
> > +**/
> > +BOOLEAN
> > +EFIAPI
> > +JsonValueIsString (
> > + IN EDKII_JSON_VALUE Json
> > + )
> > +{
> > + return json_is_string ((json_t *) Json);
> > +}
> > +
> > +/**
> > + The function is used to return if the provided JSON value contains a JSON
> number.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval TRUE The JSON value is contains JSON number.
> > + @retval FALSE The JSON value doesn't contain a JSON number.
> > +
> > +**/
> > +BOOLEAN
> > +EFIAPI
> > +JsonValueIsNumber (
> > + IN EDKII_JSON_VALUE Json
> > + )
> > +{
> > + return json_is_integer ((json_t *) Json);
> > +}
> > +
> > +/**
> > + The function is used to return if the provided JSON value contains a JSON
> boolean.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval TRUE The JSON value contains a JSON boolean.
> > + @retval FALSE The JSON value doesn't contain a JSON boolean.
> > +
> > +**/
> > +BOOLEAN
> > +EFIAPI
> > +JsonValueIsBoolean (
> > + IN EDKII_JSON_VALUE Json
> > + )
> > +{
> > + return json_is_boolean ((json_t *) Json);
> > +}
> > +
> > +/**
> > + The function is used to return if the provided JSON value contains a JSON
> NULL.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval TRUE The JSON value contains a JSON NULL.
> > + @retval FALSE The JSON value doesn't contain a JSON NULL.
> > +
> > +**/
> > +BOOLEAN
> > +EFIAPI
> > +JsonValueIsNull (
> > + IN EDKII_JSON_VALUE Json
> > + )
> > +{
> > + return json_is_null ((json_t *) Json);
> > +}
> > +
> > +/**
> > + The function is used to retrieve the associated array in an array type
> JSON value.
> > +
> > + Any changes to the returned array will impact the original JSON value.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval Return the associated array in JSON value or NULL.
> > +
> > +**/
> > +EDKII_JSON_ARRAY
> > +EFIAPI
> > +JsonValueGetArray (
> > + IN EDKII_JSON_VALUE Json
> > + )
> > +{
> > + if (Json == NULL || !JsonValueIsArray (Json)) {
> > + return NULL;
> > + }
> > +
> > + return (EDKII_JSON_ARRAY) Json;
> > +}
> > +
> > +/**
> > + The function is used to retrieve the associated object in an object type
> JSON value.
> > +
> > + Any changes to the returned object will impact the original JSON value.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval Return the associated object in JSON value or NULL.
> > +
> > +**/
> > +EDKII_JSON_OBJECT
> > +EFIAPI
> > +JsonValueGetObject (
> > + IN EDKII_JSON_VALUE Json
> > + )
> > +{
> > + if (Json == NULL || !JsonValueIsObject (Json)) {
> > + return NULL;
> > + }
> > +
> > + return (EDKII_JSON_OBJECT) Json;
> > +}
> > +
> > +/**
> > + The function is used to retrieve the associated Ascii string in a string type
> JSON value.
> > +
> > + Any changes to the returned string will impact the original JSON value.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval Return the associated Ascii string in JSON value or NULL.
> > +
> > +**/
> > +CHAR8*
> > +EFIAPI
> > +JsonValueGetAsciiString (
> > + IN EDKII_JSON_VALUE Json
> > + )
> > +{
> > + CHAR8 *AsciiStr;
> > + UINTN Index;
> > +
> > + AsciiStr = (CHAR8 *) ((json_t *) Json);
> > + if (AsciiStr == NULL) {
> > + return NULL;
> > + }
> > +
> > + Index = 0;
> > + while (*(AsciiStr + Index) != '\0') {
> > + if (((*(AsciiStr + Index)) & 0x80) != 0x00) {
> > + return NULL;
> > + }
> > +
> > + Index ++;
> > + }
> > +
> > + return AsciiStr;
> > +}
> > +
> > +/**
> > + The function is used to retrieve the associated Unicode string in a string
> type JSON value.
> > +
> > + Caller can do any changes to the returned string without any impact to
> the original JSON
> > + value, and caller needs to free the returned string.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval Return the associated Unicode string in JSON value or NULL.
> > +
> > +**/
> > +CHAR16*
> > +EFIAPI
> > +JsonValueGetUnicodeString (
> > + IN EDKII_JSON_VALUE Json
> > + )
> > +{
> > + EFI_STATUS Status;
> > + CONST CHAR8 *Utf8Str;
> > + CHAR16 *Ucs2Str;
> > +
> > + Utf8Str = json_string_value ((json_t *) Json);
> > + if (Utf8Str == NULL) {
> > + return NULL;
> > + }
> > +
> > + Status = UTF8StrToUCS2 ((CHAR8*)Utf8Str, &Ucs2Str);
> > + if (EFI_ERROR (Status)) {
> > + return NULL;
> > + }
> > +
> > + return Ucs2Str;
> > +}
> > +
> > +/**
> > + The function is used to retrieve the associated integer in a number type
> JSON value.
> > +
> > + The input JSON value should not be NULL or contain no JSON number,
> otherwise it will
> > + ASSERT() and return 0.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval Return the associated number in JSON value.
> > +
> > +**/
> > +INT64
> > +EFIAPI
> > +JsonValueGetNumber (
> > + IN EDKII_JSON_VALUE Json
> > + )
> > +{
> > + ASSERT (Json != NULL && JsonValueIsNumber (Json));
> > + if (Json == NULL || !JsonValueIsNumber (Json)) {
> > + return 0;
> > + }
> > +
> > + return json_integer_value ((json_t *) Json);
> > +}
> > +
> > +/**
> > + The function is used to retrieve the associated boolean in a boolean type
> JSON value.
> > +
> > + The input JSON value should not be NULL or contain no JSON boolean,
> otherwise it will
> > + ASSERT() and return FALSE.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval Return the associated value of JSON boolean.
> > +
> > +**/
> > +BOOLEAN
> > +EFIAPI
> > +JsonValueGetBoolean (
> > + IN EDKII_JSON_VALUE Json
> > + )
> > +{
> > + ASSERT (Json != NULL && JsonValueIsBoolean (Json));
> > + if (Json == NULL || !JsonValueIsBoolean (Json)) {
> > + return FALSE;
> > + }
> > +
> > + return json_is_true ((json_t *) Json);
> > +}
> > +
> > +/**
> > + The function is used to retrieve the associated string in a string type JSON
> value.
> > +
> > + Any changes to the returned string will impact the original JSON value.
> > +
> > + @param[in] Json The provided JSON value.
> > +
> > + @retval Return the associated Ascii string in JSON value or NULL.
> > +
> > +**/
> > +CONST CHAR8*
> > +EFIAPI
> > +JsonValueGetString (
> > + IN EDKII_JSON_VALUE Json
> > + )
> > +{
> > + return json_string_value ((const json_t *)Json);
> > +}
> > +
> > +/**
> > + The function is used to get the number of elements in a JSON object, or 0
> if it is NULL or
> > + not a JSON object.
> > +
> > + @param[in] JsonObject The provided JSON object.
> > +
> > + @retval Return the number of elements in this JSON object or 0.
> > +
> > +**/
> > +UINTN
> > +EFIAPI
> > +JsonObjectSize (
> > + IN EDKII_JSON_OBJECT JsonObject
> > + )
> > +{
> > + return json_object_size ((json_t *) JsonObject);
> > +}
> > +
> > +/**
> > + The function is used to enumerate all keys in a JSON object.
> > +
> > + Caller should be responsible to free the returned key array refference.
> But contained keys
> > + are read only and must not be modified or freed.
> > +
> > + @param[in] JsonObj The provided JSON object for enumeration.
> > + @param[out] KeyCount The count of keys in this JSON object.
> > +
> > + @retval Return an array of the enumerated keys in this JSON object or
> NULL.
> > +
> > +**/
> > +CHAR8**
> > +JsonObjectGetKeys (
> > + IN EDKII_JSON_OBJECT JsonObj,
> > + OUT UINTN *KeyCount
> > + )
> > +{
> > +
> > + UINTN Index;
> > + CONST CHAR8 **KeyArray;
> > + CONST CHAR8 *Key;
> > + EDKII_JSON_VALUE Value;
> > +
> > + if (JsonObj == NULL || KeyCount == NULL) {
> > + return NULL;
> > + }
> > +
> > + Index = 0;
> > + json_object_foreach(JsonObj, Key, Value) {
> > + Index ++;
> > + }
> > + if (Index == 0) {
> > + *KeyCount = 0;
> > + return NULL;
> > + }
> > +
> > + *KeyCount = Index;
> > + KeyArray = (CONST CHAR8 **) AllocateZeroPool (*KeyCount * sizeof
> (CHAR8 *));
> > + if (KeyArray == NULL) {
> > + return NULL;
> > + }
> > +
> > + Key = NULL;
> > + Value = NULL;
> > + Index = 0;
> > + json_object_foreach((json_t *) JsonObj, Key, Value) {
> > + KeyArray[Index] = Key;
> > + Index ++;
> > + }
> > +
> > + return (CHAR8 **)KeyArray;
> > +}
> > +
> > +/**
> > + The function is used to get a JSON value corresponding to the input key
> from a JSON object.
> > +
> > + It only returns a reference to this value and any changes on this value will
> impact the
> > + original JSON object. If that is not expected, please call JsonValueClone()
> to clone it to
> > + use.
> > +
> > + Input key must be a valid NULL terminated UTF8 encoded string. NULL
> will be returned when
> > + Key-Value is not found in this JSON object.
> > +
> > + @param[in] JsonObj The provided JSON object.
> > + @param[in] Key The key of the JSON value to be retrieved.
> > +
> > + @retval Return the corresponding JSON value to key, or NULL on error.
> > +
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonObjectGetValue (
> > + IN CONST EDKII_JSON_OBJECT JsonObj,
> > + IN CONST CHAR8 *Key
> > + )
> > +{
> > + return (EDKII_JSON_VALUE) json_object_get ((const json_t *)JsonObj,
> (const char *)Key);
> > +}
> > +
> > +/**
> > + The function is used to set a JSON value corresponding to the input key
> from a JSON object,
> > + and the reference count of this value will be increased by 1.
> > +
> > + Input key must be a valid NULL terminated UTF8 encoded string. If there
> already is a value for
> > + this key, this key will be assigned to the new JSON value. The old JSON
> value will be removed
> > + from this object and thus its' reference count will be decreased by 1.
> > +
> > + More details for reference count strategy can refer to the API
> description for JsonValueFree().
> > +
> > + @param[in] JsonObj The provided JSON object.
> > + @param[in] Key The key of the JSON value to be set.
> > + @param[in] Json The JSON value to set to this JSON object
> mapped by key.
> > +
> > + @retval EFI_ABORTED Some error occur and operation aborted.
> > + @retval EFI_SUCCESS The JSON value has been set to this JSON
> object.
> > +
> > +**/
> > +EFI_STATUS
> > +EFIAPI
> > +JsonObjectSetValue (
> > + IN EDKII_JSON_OBJECT JsonObj,
> > + IN CONST CHAR8 *Key,
> > + IN EDKII_JSON_VALUE Json
> > + )
> > +{
> > + if (json_object_set ((json_t *) JsonObj, Key, (json_t *) Json) != 0) {
> > + return EFI_ABORTED;
> > + } else {
> > + return EFI_SUCCESS;
> > + }
> > +}
> > +
> > +/**
> > + The function is used to get the number of elements in a JSON array, or 0
> if it is NULL or
> > + not a JSON array.
> > +
> > + @param[in] JsonArray The provided JSON array.
> > +
> > + @retval Return the number of elements in this JSON array or 0.
> > +
> > +**/
> > +UINTN
> > +EFIAPI
> > +JsonArrayCount (
> > + IN EDKII_JSON_ARRAY JsonArray
> > + )
> > +{
> > + return json_array_size ((json_t *) JsonArray);
> > +}
> > +
> > +/**
> > + The function is used to return the JSON value in the array at position
> index. The valid range
> > + for this index is from 0 to the return value of JsonArrayCount() minus 1.
> > +
> > + It only returns a reference to this value and any changes on this value will
> impact the
> > + original JSON object. If that is not expected, please call JsonValueClone()
> to clone it to
> > + use.
> > +
> > + If this array is NULL or not a JSON array, or if index is out of range, NULL
> will be returned.
> > +
> > + @param[in] JsonArray The provided JSON Array.
> > +
> > + @retval Return the JSON value located in the Index position or NULL.
> > +
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonArrayGetValue (
> > + IN EDKII_JSON_ARRAY JsonArray,
> > + IN UINTN Index
> > + )
> > +{
> > + return (EDKII_JSON_VALUE) json_array_get ((json_t *) JsonArray,
> Index);
> > +}
> > +
> > +/**
> > + The function is used to append a JSON value to the end of the JSON array,
> and grow the size of
> > + array by 1. The reference count of this value will be increased by 1.
> > +
> > + More details for reference count strategy can refer to the API
> description for JsonValueFree().
> > +
> > + @param[in] JsonArray The provided JSON object.
> > + @param[in] Json The JSON value to append.
> > +
> > + @retval EFI_ABORTED Some error occur and operation aborted.
> > + @retval EFI_SUCCESS JSON value has been appended to the end
> of the JSON array.
> > +
> > +**/
> > +EFI_STATUS
> > +EFIAPI
> > +JsonArrayAppendValue (
> > + IN EDKII_JSON_ARRAY JsonArray,
> > + IN EDKII_JSON_VALUE Json
> > + )
> > +{
> > + if (json_array_append ((json_t *) JsonArray, (json_t *) Json) != 0) {
> > + return EFI_ABORTED;
> > + } else {
> > + return EFI_SUCCESS;
> > + }
> > +}
> > +
> > +/**
> > + The function is used to remove a JSON value at position index, shifting
> the elements after index
> > + one position towards the start of the array. The reference count of this
> value will be decreased
> > + by 1.
>
> These comment blocks all seem wrapped at 100 characters.
> Plese rewrap at 80. The occasional overspill is fine, but this is consistent.
>
> > +
> > + More details for reference count strategy can refer to the API
> description for JsonValueFree().
> > +
> > + @param[in] JsonArray The provided JSON array.
> > + @param[in] Index The Index position before removement.
> > +
> > + @retval EFI_ABORTED Some error occur and operation aborted.
> > + @retval EFI_SUCCESS The JSON array has been removed at
> position index.
> > +
> > +**/
> > +EFI_STATUS
> > +EFIAPI
> > +JsonArrayRemoveValue (
> > + IN EDKII_JSON_ARRAY JsonArray,
> > + IN UINTN Index
> > + )
> > +{
> > + if (json_array_remove ((json_t *) JsonArray, Index) != 0) {
> > + return EFI_ABORTED;
> > + } else {
> > + return EFI_SUCCESS;
> > + }
> > +}
> > +
> > +/**
> > + Dump JSON to a buffer.
> > +
> > + @param[in] JsonValue The provided JSON array.
> > + @param[in] Flags The Index position before removement.
> > +
> > + @retval NULL Dump fail if NULL returned, otherwise the buffer
> > + contain JSON paylaod in ASCII string.
> > +**/
> > +CHAR8 *
> > +EFIAPI
> > +JsonDumpString (
> > + IN EDKII_JSON_ARRAY JsonValue,
> > + IN UINTN Flags
> > + )
> > +{
> > + if (JsonValue == NULL) {
> > + return NULL;
> > + }
> > + return json_dumps((json_t *)JsonValue, Flags);
> > +}
> > +
> > +/**
> > + Load JSON from a buffer.
> > +
> > + @param[in] Buffer Bufffer to the JSON payload
> > + @param[in] BufferLen Length of the buffer
> > + @param[in] Flags Flag of loading JSON buffer
> > + @param[in] Error Pointer to error structure
> > +
> > + @retval EDKII_JSON_VALUE NULL means fail to load JSON payload.
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonLoadBuffer (
> > + IN CONST CHAR8 *Buffer,
> > + IN UINTN BufferLen,
> > + IN UINTN Flags,
> > + IN EDKII_JSON_ERROR *Error
> > + )
> > +{
> > + return json_loadb(Buffer, BufferLen, Flags, (json_error_t *)Error);
> > +}
> > +
> > +/**
> > + Decrease reference.
> > +
> > + @param[in] JsonValue JSON value
> > +**/
> > +VOID
> > +EFIAPI
> > +JsonDecreaseReference (
> > + IN EDKII_JSON_VALUE JsonValue
> > + )
> > +{
> > + json_decref (JsonValue);
> > +}
> > +
> > +/**
> > + Increase reference.
> > +
> > + @param[in] JsonValue JSON value
> > + @retval EDKII_JSON_VALUE of itself
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonIncreaseReference (
> > + IN EDKII_JSON_VALUE JsonValue
> > + )
> > +{
> > + return json_incref (JsonValue);
> > +}
> > +
> > +/**
> > + Returns an opaque iterator which can be used to iterate over all key-
> value pairs
> > + in object, or NULL if object is empty.
> > +
> > + @param[in] JsonValue JSON value
> > + @retval Iterator pointer
> > +**/
> > +VOID *
> > +EFIAPI
> > +JsonObjectIterator (
> > + IN EDKII_JSON_VALUE JsonValue
> > + )
> > +{
> > + return json_object_iter (JsonValue);
> > +}
> > +
> > +/**
> > + Extract the associated value from iterator.
> > +
> > + @param[in] Iterator Iterator pointer
> > + @retval EDKII_JSON_VALUE
> > +**/
> > +EDKII_JSON_VALUE
> > +EFIAPI
> > +JsonObjectIteratorValue (
> > + IN VOID *Iterator
> > + )
> > +{
> > + return json_object_iter_value(Iterator);
> > +}
> > +
> > +/**
> > + Returns an iterator pointing to the next key-value pair in object after iter,
> > + or NULL if the whole object has been iterated through.
> > +
> > + @param[in] JsonValue JSON value
> > + @param[in] Iterator Iterator pointer
> > + @retval Iterator pointer
> > +**/
> > +VOID *
> > +JsonObjectIteratorNext (
> > + IN EDKII_JSON_VALUE JsonValue,
> > + IN VOID *Iterator
> > + )
> > +{
> > + return json_object_iter_next(JsonValue, Iterator);
> > +}
> > +
> > +/**
> > + Returns the json type of this json value.
> > +
> > + @param[in] JsonValue JSON value
> > + @retval JSON type returned
> > +**/
> > +EDKII_JSON_TYPE
> > +EFIAPI
> > +JsonGetType (
> > + IN EDKII_JSON_VALUE JsonValue
> > + )
> > +{
> > + return ((json_t *)JsonValue)->type;
> > +}
> > diff --git a/RedfishPkg/Library/JsonLib/JsonLib.inf
> b/RedfishPkg/Library/JsonLib/JsonLib.inf
> > new file mode 100644
> > index 0000000000..16df2ae183
> > --- /dev/null
> > +++ b/RedfishPkg/Library/JsonLib/JsonLib.inf
> > @@ -0,0 +1,103 @@
> > +## @file
> > +# Thirty party Jansson library for JSON operations.
> > +#
> > +# Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
> > +# (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
> > +#
> > +# SPDX-License-Identifier: BSD-2-Clause-Patent
> > +#
> > +##
> > +
> > +[Defines]
> > + INF_VERSION = 0x0001001b
> > + BASE_NAME = JsonLib
> > + FILE_GUID = F5E36815-305A-4C5A-9D75-4F2149E45255
> > + MODULE_TYPE = UEFI_DRIVER
> > + VERSION_STRING = 1.0
> > + LIBRARY_CLASS = JsonLib | DXE_DRIVER DXE_RUNTIME_DRIVER
> UEFI_APPLICATION UEFI_DRIVER
> > +
> > +#
> > +# VALID_ARCHITECTURES = IA32 X64 ARM AARCH64 RISCV64
> > +#
> > +
> > +[Sources]
> > + #
> > + # Below are the source code of third
> > + # party jansson library.
> > + #
> > + jansson/src/dump.c
> > + jansson/src/error.c
> > + jansson/src/hashtable.c
> > + jansson/src/hashtable_seed.c
> > + jansson/src/memory.c
> > + jansson/src/pack_unpack.c
> > + jansson/src/strbuffer.c
> > + jansson/src/strconv.c
> > + jansson/src/utf.c
> > + jansson/src/value.c
> > + jansson/src/version.c
> > + #
> > + # Below are the source of edk2 JsonLib.
> > + #
> > + JsonLib.c
> > + JsonUtilities.c
> > + JsonUtilities.h
> > + JanssonCrtLibSupport.c
> > + JanssonCrtLibSupport.h
> > + jansson_config.h
> > + jansson_private_config.h
> > + sys/time.h
> > + sys/types.h
> > + assert.h
> > + errno.h
> > + limits.h
> > + math.h
> > + stdarg.h
> > + stddef.h
> > + stdio.h
> > + stdlib.h
> > + string.h
> > + time.h
> > + #
> > + # Below is the source code override to fix the build issue.
> > + # Add code in load.c to conditionally use stdin according
> > + # to HAVE_UNISTD_H macro. The PR is submitted to jansson
> > + # open source community.
> > + # https://github.com/akheron/jansson/pull/558
> > + #
> > + load.c
>
> I too have concerns over this.
> I think if we *need* to include this in edk2 tree, then we *need* to
> dual-license it as MIT + BSD+Patent.
Ah, I missed it. I had BSD+patent for jansson_config.h
>
> > +
> > +[Packages]
> > + MdePkg/MdePkg.dec
> > + MdeModulePkg/MdeModulePkg.dec
> > + RedfishPkg/RedfishPkg.dec
> > +
> > +[LibraryClasses]
> > + UefiLib
> > + BaseLib
> > + BaseMemoryLib
> > + MemoryAllocationLib
> > + UefiRuntimeServicesTableLib
> > + DebugLib
> > + PrintLib
>
> Please sort classes alphabetically.
sure
>
> > +
> > +[BuildOptions]
> > + #
> > + # Disables the following Visual Studio compiler warnings
> > + # so we do not break the build with /WX option:
> > + # C4090: 'function' : different 'const' qualifiers
> > + # C4244: conversion from type1 to type2, possible loss of data
> > + # C4702: unreachable code
> > + # C4706: assignment within conditional expression
> > + # C4456: declaration hides previous local declaration
> > + # C4334: 32-bit shift implicitly converted to 64-bit
> > + # C4204: nonstandard extension used: non-constant aggregate initializer
> > + # C4267: 'var' : conversion from 'size_t' to 'type', possible loss of data
> > + #
> > + # Define macro HAVE_CONFIG_H to include jansson_private_config.h to
> build.
> > + # Undefined _WIN32, WIN64, _MSC_VER macros
> > + # On GCC, no error on the unused-function and unused-but-set-variable.
> > + #
> > + MSFT:*_*_*_CC_FLAGS = /wd4204 /wd4267 /wd4702 /wd4706 /wd4244
> /wd4090 /wd4456 /wd4334 /DHAVE_CONFIG_H=1 /U_WIN32 /UWIN64
> /U_MSC_VER
> > + GCC:*_*_*_CC_FLAGS = -Wno-unused-function -Wno-unused-but-set-
> variable
>
> Unused but set variable warning traps many real errors.
> Are you finding lots of these in the upstream project?
yes. one error of unused-but-set-variable, many of unused-function.
>
> > +
> > diff --git a/RedfishPkg/Library/JsonLib/JsonUtilities.c
> b/RedfishPkg/Library/JsonLib/JsonUtilities.c
> > new file mode 100644
> > index 0000000000..f84a133219
> > --- /dev/null
> > +++ b/RedfishPkg/Library/JsonLib/JsonUtilities.c
> > @@ -0,0 +1,417 @@
> > +/** @file
> > + Utility functions for JSON operations.
> > +
> > + Copyright (c) 2018 - 2019, Intel Corporation. All rights reserved.<BR>
> > + (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
> > +
> > + SPDX-License-Identifier: BSD-2-Clause-Patent
> > +
> > +**/
> > +
> > +#include "JsonUtilities.h"
> > +
> > +/**
> > + Since each UCS2 character can be represented by 1-3 UTF8 encoded
> characters,
> > + this function is used to retrieve the UTF8 encoding size for a UCS2
> character.
> > +
> > + @param[in] Utf8Buffer The buffer for UTF8 encoded data.
> > +
> > + @retval Return the size of UTF8 encoding string or 0 if it is not for
> > + UCS2 format.
> > +
> > +**/
>
> At least some of these look like generically useful functions.
> Consider including in MdeModulePkg?
That is a good idea. This should be the totally new library and header file under MdeModulePkg right? Or can we add these new functions to the existing lib?
> If not, or not right away, at least give it a more appropriate generic
> name and break it out as a separate library, and commit, for UCS2-UTF8
> operations.
>
> > +UINT8
> > +GetUTF8SizeForUCS2 (
> > + IN CHAR8 *Utf8Buffer
> > + )
> > +{
> > + CHAR8 TempChar;
> > + UINT8 Utf8Size;
> > +
> > + ASSERT (Utf8Buffer != NULL);
> > +
> > + TempChar = *Utf8Buffer;
> > + if ((TempChar & 0xF0) == 0xF0) {
> > +
> > + //
> > + // This format is not for UCS2.
> > + //
> > + return 0;
> > + }
> > +
> > + Utf8Size = 1;
> > + if ((TempChar & 0x80) == 0x80) {
> > + if ((TempChar & 0xC0) == 0xC0) {
> > +
> > + Utf8Size ++;
> > + if ((TempChar & 0xE0) == 0xE0) {
> > +
> > + Utf8Size ++;
> > + }
> > + }
> > + }
> > +
> > + return Utf8Size;
> > +}
> > +
> > +/**
> > + Since each UCS2 character can be represented by the format: \uXXXX,
> this function
> > + is used to retrieve the UCS2 character from a Unicode format.
> > + Call MUST make sure there are at least 6 Bytes in the input UTF8 buffer.
> > +
> > + @param[in] Utf8Buffer The buffer for UTF8 encoded data.
> > + @param[out] Ucs2Char The converted UCS2 character.
> > +
> > + @retval EFI_INVALID_PARAMETER Non-Ascii characters found in the
> hexadecimal
> > + digits string, and can't be converted to a UCS2
> > + character.
> > + @retval EFI_SUCCESS The UCS2 character has been retrieved.
> > +
> > +**/
> > +EFI_STATUS
> > +GetUCS2CharByFormat (
> > + IN CHAR8 *Utf8Buffer,
> > + OUT CHAR16 *Ucs2Char
> > + )
> > +{
> > + UINT8 Num1;
> > + UINT8 Num2;
> > + UINT8 Index;
> > + CHAR8 Ucs2CharFormat[JSON_UNICODE_FORMAT_CHAR_SIZE]; ///
> two Hexadecimal digits Ascii string, like "3F"
> > +
> > + for (Index = 0; Index < 4; Index ++) {
> > + if ((*(Utf8Buffer + 2 + Index) & 0x80) != 0x00) {
> > + return EFI_INVALID_PARAMETER;
> > + }
> > + }
> > +
> > + ZeroMem (Ucs2CharFormat, JSON_UNICODE_FORMAT_CHAR_SIZE);
> > +
> > + //
> > + // Get the First Number, Offset is 2
> > + //
> > + CopyMem (Ucs2CharFormat, Utf8Buffer + 2,
> JSON_UNICODE_FORMAT_CHAR_LEN);
> > + Num1 = (UINT8) AsciiStrHexToUintn (Ucs2CharFormat);
> > +
> > + //
> > + // Get the Second Number, Offset is 4
> > + //
> > + CopyMem (Ucs2CharFormat, Utf8Buffer + 4,
> JSON_UNICODE_FORMAT_CHAR_LEN);
> > + Num2 = (UINT8) AsciiStrHexToUintn (Ucs2CharFormat);
> > +
> > + //
> > + // Ucs2Char is Little-Endian
> > + //
> > + *((CHAR8 *) Ucs2Char) = Num2;
> > + *(((CHAR8 *) Ucs2Char) + 1) = Num1;
> > +
> > + return EFI_SUCCESS;
> > +}
> > +
> > +/**
> > + Convert a UCS2 character to UTF8 encoding string.
> > +
> > + @param[in] Ucs2Char The provided UCS2 character.
> > + @param[out] Utf8Buffer The converted UTF8 encoded data.
> > +
> > + @retval Return the size of UTF8 encoding data for this UCS2 character.
> > +
> > +**/
> > +UINT8
> > +UCS2CharToUTF8 (
> > + IN CHAR16 Ucs2Char,
> > + OUT CHAR8 *Utf8Buffer
> > + )
> > +{
> > + UINT16 Ucs2Number;
> > +
> > + ASSERT (Utf8Buffer != NULL);
> > +
> > + Ucs2Number = (UINT16) Ucs2Char;
> > + if (Ucs2Number <= 0x007F) {
> > +
> > + //
> > + // UTF8 format: 0xxxxxxx
> > + //
> > + *Utf8Buffer = Ucs2Char & 0x7F;
> > + return 1;
> > +
> > + } else if (Ucs2Number >= 0x0080 && Ucs2Number <= 0x07FF) {
> > +
> > + //
> > + // UTF8 format: 110xxxxx 10xxxxxx
> > + //
> > + *(Utf8Buffer + 1) = (Ucs2Char & 0x3F) | 0x80;
> > + *Utf8Buffer = ((Ucs2Char >> 6) & 0x1F) | 0xC0;
> > + return 2;
> > +
> > + } else { /// Ucs2Number >= 0x0800 && Ucs2Number <= 0xFFFF
> > +
> > + //
> > + // UTF8 format: 1110xxxx 10xxxxxx 10xxxxxx
> > + //
> > + *(Utf8Buffer + 2) = (Ucs2Char & 0x3F) | 0x80;
> > + *(Utf8Buffer + 1) = ((Ucs2Char >> 6) & 0x3F) | 0x80;
> > + *Utf8Buffer = ((Ucs2Char >> 12) & 0x0F) | 0xE0;
> > + return 3;
> > + }
> > +}
> > +
> > +/**
> > + Convert a UTF8 encoded data to a UCS2 character.
> > +
> > + @param[in] Utf8Buffer The provided UTF8 encoded data.
> > + @param[out] Ucs2Char The converted UCS2 character.
> > +
> > + @retval EFI_INVALID_PARAMETER The UTF8 encoded string is not
> valid or
> > + not for UCS2 character.
> > + @retval EFI_SUCCESS The converted UCS2 character.
> > +
> > +**/
> > +EFI_STATUS
> > +UTF8ToUCS2Char (
> > + IN CHAR8 *Utf8Buffer,
> > + OUT CHAR16 *Ucs2Char
> > + )
> > +{
> > + UINT8 Utf8Size;
> > + CHAR8 *Ucs2Buffer;
> > + CHAR8 TempChar1;
> > + CHAR8 TempChar2;
> > + CHAR8 TempChar3;
> > +
> > + ASSERT (Utf8Buffer != NULL && Ucs2Char != NULL);
> > + ZeroMem (Ucs2Char, sizeof (CHAR16));
> > + Ucs2Buffer = (CHAR8 *) Ucs2Char;
> > +
> > + Utf8Size = GetUTF8SizeForUCS2 (Utf8Buffer);
> > + switch (Utf8Size) {
> > +
> > + case 1:
> > +
> > + //
> > + // UTF8 format: 0xxxxxxx
> > + //
> > + TempChar1 = *Utf8Buffer;
> > + if ((TempChar1 & 0x80) != 0x00) {
> > + return EFI_INVALID_PARAMETER;
> > + }
> > +
> > + *Ucs2Buffer = TempChar1;
> > + *(Ucs2Buffer + 1) = 0;
> > + break;
> > +
> > + case 2:
> > +
> > + //
> > + // UTF8 format: 110xxxxx 10xxxxxx
> > + //
> > + TempChar1 = *Utf8Buffer;
> > + if ((TempChar1 & 0xE0) != 0xC0) {
> > + return EFI_INVALID_PARAMETER;
> > + }
> > +
> > + TempChar2 = *(Utf8Buffer + 1);
> > + if ((TempChar2 & 0xC0) != 0x80) {
> > + return EFI_INVALID_PARAMETER;
> > + }
> > +
> > + *Ucs2Buffer = (TempChar1 << 6) + (TempChar2 & 0x3F);
> > + *(Ucs2Buffer + 1) = (TempChar1 >> 2) & 0x07;
> > + break;
> > +
> > + case 3:
> > +
> > + //
> > + // UTF8 format: 1110xxxx 10xxxxxx 10xxxxxx
> > + //
> > + TempChar1 = *Utf8Buffer;
> > + if ((TempChar1 & 0xF0) != 0xE0) {
> > + return EFI_INVALID_PARAMETER;
> > + }
> > +
> > + TempChar2 = *(Utf8Buffer + 1);
> > + if ((TempChar2 & 0xC0) != 0x80) {
> > + return EFI_INVALID_PARAMETER;
> > + }
> > +
> > + TempChar3 = *(Utf8Buffer + 2);
> > + if ((TempChar3 & 0xC0) != 0x80) {
> > + return EFI_INVALID_PARAMETER;
> > + }
> > +
> > + *Ucs2Buffer = (TempChar2 << 6) + (TempChar3 & 0x3F);
> > + *(Ucs2Buffer + 1) = (TempChar1 << 4) + ((TempChar2 >> 2) & 0x0F);
> > +
> > + break;
> > +
> > + default:
> > +
> > + return EFI_INVALID_PARAMETER;
> > + }
> > +
> > + return EFI_SUCCESS;
> > +}
> > +
> > +/**
> > + Convert a UCS2 string to a UTF8 encoded string.
> > +
> > + @param[in] Ucs2Str The provided UCS2 string.
> > + @param[out] Utf8StrAddr The converted UTF8 string address.
> Caller
> > + is responsible for Free this string.
> > +
> > + @retval EFI_INVALID_PARAMETER One or more parameters are
> invalid.
> > + @retval EFI_OUT_OF_RESOURCES System runs out of resources.
> > + @retval EFI_SUCCESS The UTF8 encoded string has been
> converted.
> > +
> > +**/
> > +EFI_STATUS
> > +UCS2StrToUTF8 (
> > + IN CHAR16 *Ucs2Str,
> > + OUT CHAR8 **Utf8StrAddr
> > + )
> > +{
> > + UINTN Ucs2StrIndex;
> > + UINTN Ucs2StrLength;
> > + CHAR8 *Utf8Str;
> > + UINTN Utf8StrLength;
> > + UINTN Utf8StrIndex;
> > + CHAR8 Utf8Buffer[UTF8_BUFFER_FOR_UCS2_MAX_SIZE];
> > + UINT8 Utf8BufferSize;
> > +
> > + if (Ucs2Str == NULL || Utf8StrAddr == NULL) {
> > + return EFI_INVALID_PARAMETER;
> > + }
> > +
> > + Ucs2StrLength = StrLen (Ucs2Str);
> > + Utf8StrLength = 0;
> > +
> > + for (Ucs2StrIndex = 0; Ucs2StrIndex < Ucs2StrLength; Ucs2StrIndex ++) {
> > +
> > + ZeroMem (Utf8Buffer, sizeof (Utf8Buffer));
> > + Utf8BufferSize = UCS2CharToUTF8 (Ucs2Str[Ucs2StrIndex], Utf8Buffer);
> > + Utf8StrLength += Utf8BufferSize;
> > + }
> > +
> > + Utf8Str = AllocateZeroPool (Utf8StrLength + 1);
> > + if (Utf8Str == NULL) {
> > + return EFI_OUT_OF_RESOURCES;
> > + }
> > +
> > + Utf8StrIndex = 0;
> > + for (Ucs2StrIndex = 0; Ucs2StrIndex < Ucs2StrLength; Ucs2StrIndex ++) {
> > +
> > + ZeroMem (Utf8Buffer, sizeof (Utf8Buffer));
> > + Utf8BufferSize = UCS2CharToUTF8 (Ucs2Str[Ucs2StrIndex], Utf8Buffer);
> > +
> > + CopyMem (Utf8Str + Utf8StrIndex, Utf8Buffer, Utf8BufferSize);
> > + Utf8StrIndex += Utf8BufferSize;
> > + }
> > +
> > + Utf8Str[Utf8StrIndex] = '\0';
> > + *Utf8StrAddr = Utf8Str;
> > +
> > + return EFI_SUCCESS;
> > +}
> > +
> > +/**
> > + Convert a UTF8 encoded string to a UCS2 string.
> > +
> > + @param[in] Utf8Str The provided UTF8 encoded string.
> > + @param[out] Ucs2StrAddr The converted UCS2 string address.
> Caller
> > + is responsible for Free this string.
> > +
> > + @retval EFI_INVALID_PARAMETER The UTF8 encoded string is not
> valid to
> > + convert to UCS2 string.
> > + One or more parameters are invalid.
> > + @retval EFI_OUT_OF_RESOURCES System runs out of resources.
> > + @retval EFI_SUCCESS The UCS2 string has been converted.
> > +
> > +**/
> > +EFI_STATUS
> > +UTF8StrToUCS2 (
> > + IN CHAR8 *Utf8Str,
> > + OUT CHAR16 **Ucs2StrAddr
> > + )
> > +{
> > + EFI_STATUS Status;
> > + UINTN Utf8StrIndex;
> > + UINTN Utf8StrLength;
> > + UINTN Ucs2StrIndex;
> > + UINT8 Utf8BufferSize;
> > + CHAR16 *Ucs2StrTemp;
> > +
> > + if (Utf8Str == NULL || Ucs2StrAddr == NULL) {
> > + return EFI_INVALID_PARAMETER;
> > + }
> > +
> > + //
> > + // It is not an Ascii string, calculate string length.
> > + //
> > + Utf8StrLength = 0;
> > + while (*(Utf8Str + Utf8StrLength) != '\0') {
> > + Utf8StrLength ++;
> > + }
> > +
> > + //
> > + // UCS2 string shall not be longer than the UTF8 string.
> > + //
> > + Ucs2StrTemp = AllocateZeroPool ((Utf8StrLength + 1) * sizeof (CHAR16));
> > + if (Ucs2StrTemp == NULL) {
> > + return EFI_OUT_OF_RESOURCES;
> > + }
> > +
> > + Utf8StrIndex = 0;
> > + Ucs2StrIndex = 0;
> > + while (Utf8Str[Utf8StrIndex] != '\0') {
> > +
> > + if (CompareMem (Utf8Str + Utf8StrIndex, "\\u", 2) == 0 &&
> > + Utf8StrLength - Utf8StrIndex >= JSON_UNICODE_FORMAT_LEN) {
> > +
> > + Status = GetUCS2CharByFormat (Utf8Str + Utf8StrIndex, Ucs2StrTemp
> + Ucs2StrIndex);
> > + if (!EFI_ERROR (Status)) {
> > +
> > + Utf8StrIndex += JSON_UNICODE_FORMAT_LEN;
> > + Ucs2StrIndex ++;
> > + } else {
> > +
> > + StrCpyS (Ucs2StrTemp + Ucs2StrIndex, 3, L"\\u");
> > +
> > + Ucs2StrIndex += 2;
> > + Utf8StrIndex += 2;
> > + }
> > + } else {
> > +
> > + Utf8BufferSize = GetUTF8SizeForUCS2 (Utf8Str + Utf8StrIndex);
> > + if (Utf8BufferSize == 0 || Utf8StrLength - Utf8StrIndex <
> Utf8BufferSize) {
> > +
> > + FreePool (Ucs2StrTemp);
> > + return EFI_INVALID_PARAMETER;
> > + }
> > +
> > + Status = UTF8ToUCS2Char (Utf8Str + Utf8StrIndex, Ucs2StrTemp +
> Ucs2StrIndex);
> > + if (EFI_ERROR (Status)) {
> > +
> > + FreePool (Ucs2StrTemp);
> > + return EFI_INVALID_PARAMETER;
> > + }
> > +
> > + Ucs2StrIndex ++;
> > + Utf8StrIndex += Utf8BufferSize;
> > + }
> > + }
> > +
> > + *Ucs2StrAddr = AllocateZeroPool ((Ucs2StrIndex + 1) * sizeof (CHAR16));
> > + if (*Ucs2StrAddr == NULL) {
> > +
> > + FreePool (Ucs2StrTemp);
> > + return EFI_OUT_OF_RESOURCES;
> > + }
> > +
> > + StrCpyS (*Ucs2StrAddr, Ucs2StrIndex + 1, Ucs2StrTemp);
> > + *(*Ucs2StrAddr + Ucs2StrIndex) = L'\0';
> > + FreePool (Ucs2StrTemp);
> > +
> > + return EFI_SUCCESS;
> > +}
> > +
> > diff --git a/RedfishPkg/Library/JsonLib/JsonUtilities.h
> b/RedfishPkg/Library/JsonLib/JsonUtilities.h
> > new file mode 100644
> > index 0000000000..1aaa4d31e2
> > --- /dev/null
> > +++ b/RedfishPkg/Library/JsonLib/JsonUtilities.h
> > @@ -0,0 +1,69 @@
> > +/** @file
> > + Utility functions for JSON operations.
> > +
> > + Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
> > + (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
> > +
> > + SPDX-License-Identifier: BSD-2-Clause-Patent
> > +
> > +**/
> > +
> > +#ifndef JSON_UTILITIES_H_
> > +#define JSON_UTILITIES_H_
> > +
> > +#include <Base.h>
> > +#include <Uefi.h>
> > +#include <Library/BaseLib.h>
> > +#include <Library/BaseMemoryLib.h>
> > +#include <Library/DebugLib.h>
> > +#include <Library/PrintLib.h>
> > +#include <Library/MemoryAllocationLib.h>
> > +#include "jansson.h"
> > +
> > +#define JSON_UNICODE_FORMAT_LEN 6 /// L"\u0000"
> > +#define JSON_UNICODE_FORMAT_SIZE 7
> > +
> > +#define JSON_UNICODE_FORMAT_CHAR_LEN 2
> > +#define JSON_UNICODE_FORMAT_CHAR_SIZE 3
> > +
> > +#define UTF8_BUFFER_FOR_UCS2_MAX_SIZE 3
> > +
> > +/**
> > + Convert a UCS2 string to a UTF8 encoded string.
> > +
> > + @param[in] Ucs2Str The provided UCS2 string.
> > + @param[out] Utf8StrAddr The converted UTF8 string address.
> Caller
> > + is responsible for Free this string.
> > +
> > + @retval EFI_INVALID_PARAMETER One or more parameters are
> invalid.
> > + @retval EFI_OUT_OF_RESOURCES System runs out of resources.
> > + @retval EFI_SUCCESS The UTF8 encoded string has been
> converted.
> > +
> > +**/
> > +EFI_STATUS
> > +UCS2StrToUTF8 (
> > + IN CHAR16 *Ucs2Str,
> > + OUT CHAR8 **Utf8StrAddr
> > + );
> > +
> > +/**
> > + Convert a UTF8 encoded string to a UCS2 string.
> > +
> > + @param[in] Utf8Str The provided UTF8 encoded string.
> > + @param[out] Ucs2StrAddr The converted UCS2 string address.
> Caller
> > + is responsible for Free this string.
> > +
> > + @retval EFI_INVALID_PARAMETER The UTF8 encoded string is not
> valid to
> > + convert to UCS2 string.
> > + One or more parameters are invalid.
> > + @retval EFI_OUT_OF_RESOURCES System runs out of resources.
> > + @retval EFI_SUCCESS The UCS2 string has been converted.
> > +
> > +**/
> > +EFI_STATUS
> > +UTF8StrToUCS2 (
> > + IN CHAR8 *Utf8Str,
> > + OUT CHAR16 **Ucs2StrAddr
> > + );
> > +
> > +#endif
> > diff --git a/RedfishPkg/Library/JsonLib/Readme.txt
> b/RedfishPkg/Library/JsonLib/Readme.txt
> > new file mode 100644
> > index 0000000000..cc149196b9
> > --- /dev/null
> > +++ b/RedfishPkg/Library/JsonLib/Readme.txt
>
> .rst?
Must be rst?
Abner
>
> /
> Leif
>
> > @@ -0,0 +1,40 @@
> >
> +=========================================================
> ====================
> > + Introduction
> >
> +=========================================================
> ====================
> > + Jansson is a C library for encoding, decoding and manipulating JSON data.
> > +Its main features and design principles are:
> > +
> > + - Simple and intuitive API and data model
> > + - Comprehensive documentation
> > + - No dependencies on other libraries
> > + - Full Unicode support (UTF-8)
> > + - Extensive test suite
> > +
> > + Jansson is licensed under the MIT license(refer to ReadMe.rst under
> edk2).
> > +It is used in production and its API is stable. It works on numerous
> > +platforms, including numerous Unix like systems and Windows. It's
> suitable
> > +for use on any system, including desktop, server, and small embedded
> systems.
> > +
> > + In UEFI/EDKII environment, Redfish project consumes jansson to achieve
> JSON
> > +operations.
> > +
> > +* Jansson version on edk2: 2.13.1
> > +
> > +* EDKII jansson library wrapper:
> > + - JsonLib.h:
> > + This is the denifitions of EDKII JSON APIs which are mapped to
> > + jannson funcitons accordingly.
> > +
> > + - JanssonJsonLibMapping.h:
> > + This is the wrapper to map funcitons and definitions used in
> > + native jannson applications to edk2 JsonLib. This avoids the
> > + modifications on native jannson applications to be built under
> > + edk2 environment.
> > +
> > +*Known issue:
> > + Build fail with jansson/src/load.c, add code in load.c to conditionally
> > + use stdin according to HAVE_UNISTD_H macro. The PR is submitted to
> > + jansson open source community.
> > + https://github.com/akheron/jansson/pull/558
> > +
> > +
> > diff --git a/RedfishPkg/Library/JsonLib/assert.h
> b/RedfishPkg/Library/JsonLib/assert.h
> > new file mode 100644
> > index 0000000000..8f9eb748e4
> > --- /dev/null
> > +++ b/RedfishPkg/Library/JsonLib/assert.h
> > @@ -0,0 +1,16 @@
> > +/** @file
> > + Include file to support building the third-party jansson library.
> > +
> > + Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
> > + (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
> > +
> > + SPDX-License-Identifier: BSD-2-Clause-Patent
> > +
> > +**/
> > +
> > +#ifndef JANSSON_CRT_ASSERT_H_
> > +#define JANSSON_CRT_ASSERT_H_
> > +
> > +#include <JanssonCrtLibSupport.h>
> > +
> > +#endif
> > diff --git a/RedfishPkg/Library/JsonLib/errno.h
> b/RedfishPkg/Library/JsonLib/errno.h
> > new file mode 100644
> > index 0000000000..b1191b225a
> > --- /dev/null
> > +++ b/RedfishPkg/Library/JsonLib/errno.h
> > @@ -0,0 +1,16 @@
> > +/** @file
> > + Include file to support building the third-party jansson library.
> > +
> > + Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
> > + (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
> > +
> > + SPDX-License-Identifier: BSD-2-Clause-Patent
> > +
> > +**/
> > +
> > +#ifndef JANSSON_CRT_ERRNO_H_
> > +#define JANSSON_CRT_ERRNO_H_
> > +
> > +#include <JanssonCrtLibSupport.h>
> > +
> > +#endif
> > diff --git a/RedfishPkg/Library/JsonLib/jansson_config.h
> b/RedfishPkg/Library/JsonLib/jansson_config.h
> > new file mode 100644
> > index 0000000000..6b154289df
> > --- /dev/null
> > +++ b/RedfishPkg/Library/JsonLib/jansson_config.h
> > @@ -0,0 +1,60 @@
> > +/** @file
> > + * Copyright (c) 2010-2016 Petri Lehtinen <petri at digip.org>
> > + *
> > + * Jansson is free software; you can redistribute it and/or modify
> > + * it under the terms of the MIT license. See LICENSE for details.
> > + *
> > + *
> > + * This file specifies a part of the site-specific configuration for
> > + * Jansson, namely those things that affect the public API in
> > + * jansson.h.
> > + *
> > + * The configure script copies this file to jansson_config.h and
> > + * replaces @var@ substitutions by values that fit your system. If you
> > + * cannot run the configure script, you can do the value substitution
> > + * by hand.
> > +
> > + jansson open source license,
> > + https://github.com/akheron/jansson/blob/master/LICENSE
> > +
> > + (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
> > +
> > + SPDX-License-Identifier: BSD-2-Clause-Patent
> > + **/
> > +
> > +#ifndef JANSSON_CONFIG_H_
> > +#define JANSSON_CONFIG_H_
> > +
> > +/* If your compiler supports the inline keyword in C, JSON_INLINE is
> > + defined to `inline', otherwise empty. In C++, the inline is always
> > + supported. */
> > +#ifdef __cplusplus
> > +#define JSON_INLINE inline
> > +#else
> > +#define JSON_INLINE
> > +#endif
> > +
> > +/* If your compiler supports the `long long` type and the strtoll()
> > + library function, JSON_INTEGER_IS_LONG_LONG is defined to 1,
> > + otherwise to 0. */
> > +#define JSON_INTEGER_IS_LONG_LONG 1
> > +
> > +/* If locale.h and localeconv() are available, define to 1,
> > + otherwise to 0. */
> > +#define JSON_HAVE_LOCALECONV 0
> > +
> > +/* If __atomic builtins are available they will be used to manage
> > + reference counts of json_t. */
> > +#define JSON_HAVE_ATOMIC_BUILTINS 0
> > +
> > +/* If __atomic builtins are not available we try using __sync builtins
> > + to manage reference counts of json_t. */
> > +#define JSON_HAVE_SYNC_BUILTINS 0
> > +
> > +/* Maximum recursion depth for parsing JSON input.
> > + This limits the depth of e.g. array-within-array constructions. */
> > +#define JSON_PARSER_MAX_DEPTH 2048
> > +
> > +#define SUPPORT_JANSSON_JSON_REAL 1
> > +
> > +#endif
> > diff --git a/RedfishPkg/Library/JsonLib/jansson_private_config.h
> b/RedfishPkg/Library/JsonLib/jansson_private_config.h
> > new file mode 100644
> > index 0000000000..268f91ef8a
> > --- /dev/null
> > +++ b/RedfishPkg/Library/JsonLib/jansson_private_config.h
> > @@ -0,0 +1,19 @@
> > +/** @file
> > + Jansson private configurations for UEFI support.
> > +
> > + Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
> > + (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
> > +
> > + SPDX-License-Identifier: BSD-2-Clause-Patent
> > +
> > +**/
> > +
> > +#ifndef JANSSON_PRIVATE_CONFIG_H_
> > +#define JANSSON_PRIVATE_CONFIG_H_
> > +
> > +#define HAVE_SYS_TIME_H 1
> > +#define HAVE_SYS_TYPES_H 1
> > +
> > +#define INITIAL_HASHTABLE_ORDER 3
> > +
> > +#endif
> > diff --git a/RedfishPkg/Library/JsonLib/limits.h
> b/RedfishPkg/Library/JsonLib/limits.h
> > new file mode 100644
> > index 0000000000..1a544adece
> > --- /dev/null
> > +++ b/RedfishPkg/Library/JsonLib/limits.h
> > @@ -0,0 +1,16 @@
> > +/** @file
> > + Include file to support building the third-party jansson library.
> > +
> > + Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
> > + (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
> > +
> > + SPDX-License-Identifier: BSD-2-Clause-Patent
> > +
> > +**/
> > +
> > +#ifndef JANSSON_CRT_LIMITS_H_
> > +#define JANSSON_CRT_LIMITS_H_
> > +
> > +#include <JanssonCrtLibSupport.h>
> > +
> > +#endif
> > diff --git a/RedfishPkg/Library/JsonLib/load.c
> b/RedfishPkg/Library/JsonLib/load.c
> > new file mode 100644
> > index 0000000000..92063e63cb
> > --- /dev/null
> > +++ b/RedfishPkg/Library/JsonLib/load.c
> > @@ -0,0 +1,1111 @@
> > +/*
> > + * Copyright (c) 2009-2016 Petri Lehtinen <petri at digip.org>
> > + *
> > + * Jansson is free software; you can redistribute it and/or modify
> > + * it under the terms of the MIT license. See LICENSE for details.
> > +
> > + (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
> > +
> > + SPDX-License-Identifier: BSD-2-Clause-Patent
> > + */
> > +
> > +#ifndef _GNU_SOURCE
> > +#define _GNU_SOURCE
> > +#endif
> > +
> > +#include "jansson_private.h"
> > +
> > +#include <assert.h>
> > +#include <errno.h>
> > +#include <limits.h>
> > +#include <stdio.h>
> > +#include <stdlib.h>
> > +#include <string.h>
> > +#ifdef HAVE_UNISTD_H
> > +#include <unistd.h>
> > +#endif
> > +
> > +#include "jansson.h"
> > +#include "strbuffer.h"
> > +#include "utf.h"
> > +
> > +#define STREAM_STATE_OK 0
> > +#define STREAM_STATE_EOF -1
> > +#define STREAM_STATE_ERROR -2
> > +
> > +#define TOKEN_INVALID -1
> > +#define TOKEN_EOF 0
> > +#define TOKEN_STRING 256
> > +#define TOKEN_INTEGER 257
> > +#define TOKEN_REAL 258
> > +#define TOKEN_TRUE 259
> > +#define TOKEN_FALSE 260
> > +#define TOKEN_NULL 261
> > +
> > +/* Locale independent versions of isxxx() functions */
> > +#define l_isupper(c) ('A' <= (c) && (c) <= 'Z')
> > +#define l_islower(c) ('a' <= (c) && (c) <= 'z')
> > +#define l_isalpha(c) (l_isupper(c) || l_islower(c))
> > +#define l_isdigit(c) ('0' <= (c) && (c) <= '9')
> > +#define l_isxdigit(c) \
> > + (l_isdigit(c) || ('A' <= (c) && (c) <= 'F') || ('a' <= (c) && (c) <= 'f'))
> > +
> > +/* Read one byte from stream, convert to unsigned char, then int, and
> > + return. return EOF on end of file. This corresponds to the
> > + behaviour of fgetc(). */
> > +typedef int (*get_func)(void *data);
> > +
> > +typedef struct {
> > + get_func get;
> > + void *data;
> > + char buffer[5];
> > + size_t buffer_pos;
> > + int state;
> > + int line;
> > + int column, last_column;
> > + size_t position;
> > +} stream_t;
> > +
> > +typedef struct {
> > + stream_t stream;
> > + strbuffer_t saved_text;
> > + size_t flags;
> > + size_t depth;
> > + int token;
> > + union {
> > + struct {
> > + char *val;
> > + size_t len;
> > + } string;
> > + json_int_t integer;
> > + double real;
> > + } value;
> > +} lex_t;
> > +
> > +#define stream_to_lex(stream) container_of(stream, lex_t, stream)
> > +
> > +/*** error reporting ***/
> > +
> > +static void error_set(json_error_t *error, const lex_t *lex, enum
> json_error_code code,
> > + const char *msg, ...) {
> > + va_list ap;
> > + char msg_text[JSON_ERROR_TEXT_LENGTH];
> > + char msg_with_context[JSON_ERROR_TEXT_LENGTH];
> > +
> > + int line = -1, col = -1;
> > + size_t pos = 0;
> > + const char *result = msg_text;
> > +
> > + if (!error)
> > + return;
> > +
> > + va_start(ap, msg);
> > + vsnprintf(msg_text, JSON_ERROR_TEXT_LENGTH, msg, ap);
> > + msg_text[JSON_ERROR_TEXT_LENGTH - 1] = '\0';
> > + va_end(ap);
> > +
> > + if (lex) {
> > + const char *saved_text = strbuffer_value(&lex->saved_text);
> > +
> > + line = lex->stream.line;
> > + col = lex->stream.column;
> > + pos = lex->stream.position;
> > +
> > + if (saved_text && saved_text[0]) {
> > + if (lex->saved_text.length <= 20) {
> > + snprintf(msg_with_context, JSON_ERROR_TEXT_LENGTH, "%s
> near '%s'",
> > + msg_text, saved_text);
> > + msg_with_context[JSON_ERROR_TEXT_LENGTH - 1] = '\0';
> > + result = msg_with_context;
> > + }
> > + } else {
> > + if (code == json_error_invalid_syntax) {
> > + /* More specific error code for premature end of file. */
> > + code = json_error_premature_end_of_input;
> > + }
> > + if (lex->stream.state == STREAM_STATE_ERROR) {
> > + /* No context for UTF-8 decoding errors */
> > + result = msg_text;
> > + } else {
> > + snprintf(msg_with_context, JSON_ERROR_TEXT_LENGTH, "%s
> near end of file",
> > + msg_text);
> > + msg_with_context[JSON_ERROR_TEXT_LENGTH - 1] = '\0';
> > + result = msg_with_context;
> > + }
> > + }
> > + }
> > +
> > + jsonp_error_set(error, line, col, pos, code, "%s", result);
> > +}
> > +
> > +/*** lexical analyzer ***/
> > +
> > +static void stream_init(stream_t *stream, get_func get, void *data) {
> > + stream->get = get;
> > + stream->data = data;
> > + stream->buffer[0] = '\0';
> > + stream->buffer_pos = 0;
> > +
> > + stream->state = STREAM_STATE_OK;
> > + stream->line = 1;
> > + stream->column = 0;
> > + stream->position = 0;
> > +}
> > +
> > +static int stream_get(stream_t *stream, json_error_t *error) {
> > + int c;
> > +
> > + if (stream->state != STREAM_STATE_OK)
> > + return stream->state;
> > +
> > + if (!stream->buffer[stream->buffer_pos]) {
> > + c = stream->get(stream->data);
> > + if (c == EOF) {
> > + stream->state = STREAM_STATE_EOF;
> > + return STREAM_STATE_EOF;
> > + }
> > +
> > + stream->buffer[0] = c;
> > + stream->buffer_pos = 0;
> > +
> > + if (0x80 <= c && c <= 0xFF) {
> > + /* multi-byte UTF-8 sequence */
> > + size_t i, count;
> > +
> > + count = utf8_check_first(c);
> > + if (!count)
> > + goto out;
> > +
> > + assert(count >= 2);
> > +
> > + for (i = 1; i < count; i++)
> > + stream->buffer[i] = stream->get(stream->data);
> > +
> > + if (!utf8_check_full(stream->buffer, count, NULL))
> > + goto out;
> > +
> > + stream->buffer[count] = '\0';
> > + } else
> > + stream->buffer[1] = '\0';
> > + }
> > +
> > + c = stream->buffer[stream->buffer_pos++];
> > +
> > + stream->position++;
> > + if (c == '\n') {
> > + stream->line++;
> > + stream->last_column = stream->column;
> > + stream->column = 0;
> > + } else if (utf8_check_first(c)) {
> > + /* track the Unicode character column, so increment only if
> > + this is the first character of a UTF-8 sequence */
> > + stream->column++;
> > + }
> > +
> > + return c;
> > +
> > +out:
> > + stream->state = STREAM_STATE_ERROR;
> > + error_set(error, stream_to_lex(stream), json_error_invalid_utf8,
> > + "unable to decode byte 0x%x", c);
> > + return STREAM_STATE_ERROR;
> > +}
> > +
> > +static void stream_unget(stream_t *stream, int c) {
> > + if (c == STREAM_STATE_EOF || c == STREAM_STATE_ERROR)
> > + return;
> > +
> > + stream->position--;
> > + if (c == '\n') {
> > + stream->line--;
> > + stream->column = stream->last_column;
> > + } else if (utf8_check_first(c))
> > + stream->column--;
> > +
> > + assert(stream->buffer_pos > 0);
> > + stream->buffer_pos--;
> > + assert(stream->buffer[stream->buffer_pos] == c);
> > +}
> > +
> > +static int lex_get(lex_t *lex, json_error_t *error) {
> > + return stream_get(&lex->stream, error);
> > +}
> > +
> > +static void lex_save(lex_t *lex, int c) { strbuffer_append_byte(&lex-
> >saved_text, c); }
> > +
> > +static int lex_get_save(lex_t *lex, json_error_t *error) {
> > + int c = stream_get(&lex->stream, error);
> > + if (c != STREAM_STATE_EOF && c != STREAM_STATE_ERROR)
> > + lex_save(lex, c);
> > + return c;
> > +}
> > +
> > +static void lex_unget(lex_t *lex, int c) { stream_unget(&lex->stream, c); }
> > +
> > +static void lex_unget_unsave(lex_t *lex, int c) {
> > + if (c != STREAM_STATE_EOF && c != STREAM_STATE_ERROR) {
> > +/* Since we treat warnings as errors, when assertions are turned
> > + * off the "d" variable would be set but never used. Which is
> > + * treated as an error by GCC.
> > + */
> > +#ifndef NDEBUG
> > + char d;
> > +#endif
> > + stream_unget(&lex->stream, c);
> > +#ifndef NDEBUG
> > + d =
> > +#endif
> > + strbuffer_pop(&lex->saved_text);
> > + assert(c == d);
> > + }
> > +}
> > +
> > +static void lex_save_cached(lex_t *lex) {
> > + while (lex->stream.buffer[lex->stream.buffer_pos] != '\0') {
> > + lex_save(lex, lex->stream.buffer[lex->stream.buffer_pos]);
> > + lex->stream.buffer_pos++;
> > + lex->stream.position++;
> > + }
> > +}
> > +
> > +static void lex_free_string(lex_t *lex) {
> > + jsonp_free(lex->value.string.val);
> > + lex->value.string.val = NULL;
> > + lex->value.string.len = 0;
> > +}
> > +
> > +/* assumes that str points to 'u' plus at least 4 valid hex digits */
> > +static int32_t decode_unicode_escape(const char *str) {
> > + int i;
> > + int32_t value = 0;
> > +
> > + assert(str[0] == 'u');
> > +
> > + for (i = 1; i <= 4; i++) {
> > + char c = str[i];
> > + value <<= 4;
> > + if (l_isdigit(c))
> > + value += c - '0';
> > + else if (l_islower(c))
> > + value += c - 'a' + 10;
> > + else if (l_isupper(c))
> > + value += c - 'A' + 10;
> > + else
> > + return -1;
> > + }
> > +
> > + return value;
> > +}
> > +
> > +static void lex_scan_string(lex_t *lex, json_error_t *error) {
> > + int c;
> > + const char *p;
> > + char *t;
> > + int i;
> > +
> > + lex->value.string.val = NULL;
> > + lex->token = TOKEN_INVALID;
> > +
> > + c = lex_get_save(lex, error);
> > +
> > + while (c != '"') {
> > + if (c == STREAM_STATE_ERROR)
> > + goto out;
> > +
> > + else if (c == STREAM_STATE_EOF) {
> > + error_set(error, lex, json_error_premature_end_of_input,
> > + "premature end of input");
> > + goto out;
> > + }
> > +
> > + else if (0 <= c && c <= 0x1F) {
> > + /* control character */
> > + lex_unget_unsave(lex, c);
> > + if (c == '\n')
> > + error_set(error, lex, json_error_invalid_syntax, "unexpected
> newline");
> > + else
> > + error_set(error, lex, json_error_invalid_syntax, "control character
> 0x%x",
> > + c);
> > + goto out;
> > + }
> > +
> > + else if (c == '\\') {
> > + c = lex_get_save(lex, error);
> > + if (c == 'u') {
> > + c = lex_get_save(lex, error);
> > + for (i = 0; i < 4; i++) {
> > + if (!l_isxdigit(c)) {
> > + error_set(error, lex, json_error_invalid_syntax,
> > + "invalid escape");
> > + goto out;
> > + }
> > + c = lex_get_save(lex, error);
> > + }
> > + } else if (c == '"' || c == '\\' || c == '/' || c == 'b' || c == 'f' ||
> > + c == 'n' || c == 'r' || c == 't')
> > + c = lex_get_save(lex, error);
> > + else {
> > + error_set(error, lex, json_error_invalid_syntax, "invalid escape");
> > + goto out;
> > + }
> > + } else
> > + c = lex_get_save(lex, error);
> > + }
> > +
> > + /* the actual value is at most of the same length as the source
> > + string, because:
> > + - shortcut escapes (e.g. "\t") (length 2) are converted to 1 byte
> > + - a single \uXXXX escape (length 6) is converted to at most 3 bytes
> > + - two \uXXXX escapes (length 12) forming an UTF-16 surrogate pair
> > + are converted to 4 bytes
> > + */
> > + t = jsonp_malloc(lex->saved_text.length + 1);
> > + if (!t) {
> > + /* this is not very nice, since TOKEN_INVALID is returned */
> > + goto out;
> > + }
> > + lex->value.string.val = t;
> > +
> > + /* + 1 to skip the " */
> > + p = strbuffer_value(&lex->saved_text) + 1;
> > +
> > + while (*p != '"') {
> > + if (*p == '\\') {
> > + p++;
> > + if (*p == 'u') {
> > + size_t length;
> > + int32_t value;
> > +
> > + value = decode_unicode_escape(p);
> > + if (value < 0) {
> > + error_set(error, lex, json_error_invalid_syntax,
> > + "invalid Unicode escape '%.6s'", p - 1);
> > + goto out;
> > + }
> > + p += 5;
> > +
> > + if (0xD800 <= value && value <= 0xDBFF) {
> > + /* surrogate pair */
> > + if (*p == '\\' && *(p + 1) == 'u') {
> > + int32_t value2 = decode_unicode_escape(++p);
> > + if (value2 < 0) {
> > + error_set(error, lex, json_error_invalid_syntax,
> > + "invalid Unicode escape '%.6s'", p - 1);
> > + goto out;
> > + }
> > + p += 5;
> > +
> > + if (0xDC00 <= value2 && value2 <= 0xDFFF) {
> > + /* valid second surrogate */
> > + value =
> > + ((value - 0xD800) << 10) + (value2 - 0xDC00) + 0x10000;
> > + } else {
> > + /* invalid second surrogate */
> > + error_set(error, lex, json_error_invalid_syntax,
> > + "invalid Unicode '\\u%04X\\u%04X'", value, value2);
> > + goto out;
> > + }
> > + } else {
> > + /* no second surrogate */
> > + error_set(error, lex, json_error_invalid_syntax,
> > + "invalid Unicode '\\u%04X'", value);
> > + goto out;
> > + }
> > + } else if (0xDC00 <= value && value <= 0xDFFF) {
> > + error_set(error, lex, json_error_invalid_syntax,
> > + "invalid Unicode '\\u%04X'", value);
> > + goto out;
> > + }
> > +
> > + if (utf8_encode(value, t, &length))
> > + assert(0);
> > + t += length;
> > + } else {
> > + switch (*p) {
> > + case '"':
> > + case '\\':
> > + case '/':
> > + *t = *p;
> > + break;
> > + case 'b':
> > + *t = '\b';
> > + break;
> > + case 'f':
> > + *t = '\f';
> > + break;
> > + case 'n':
> > + *t = '\n';
> > + break;
> > + case 'r':
> > + *t = '\r';
> > + break;
> > + case 't':
> > + *t = '\t';
> > + break;
> > + default:
> > + assert(0);
> > + }
> > + t++;
> > + p++;
> > + }
> > + } else
> > + *(t++) = *(p++);
> > + }
> > + *t = '\0';
> > + lex->value.string.len = t - lex->value.string.val;
> > + lex->token = TOKEN_STRING;
> > + return;
> > +
> > +out:
> > + lex_free_string(lex);
> > +}
> > +
> > +#ifndef JANSSON_USING_CMAKE /* disabled if using cmake */
> > +#if JSON_INTEGER_IS_LONG_LONG
> > +#ifdef _MSC_VER /* Microsoft Visual Studio */
> > +#define json_strtoint _strtoi64
> > +#else
> > +#define json_strtoint strtoll
> > +#endif
> > +#else
> > +#define json_strtoint strtol
> > +#endif
> > +#endif
> > +
> > +static int lex_scan_number(lex_t *lex, int c, json_error_t *error) {
> > + const char *saved_text;
> > + char *end;
> > + double doubleval;
> > +
> > + lex->token = TOKEN_INVALID;
> > +
> > + if (c == '-')
> > + c = lex_get_save(lex, error);
> > +
> > + if (c == '0') {
> > + c = lex_get_save(lex, error);
> > + if (l_isdigit(c)) {
> > + lex_unget_unsave(lex, c);
> > + goto out;
> > + }
> > + } else if (l_isdigit(c)) {
> > + do
> > + c = lex_get_save(lex, error);
> > + while (l_isdigit(c));
> > + } else {
> > + lex_unget_unsave(lex, c);
> > + goto out;
> > + }
> > +
> > + if (!(lex->flags & JSON_DECODE_INT_AS_REAL) && c != '.' && c != 'E' &&
> c != 'e') {
> > + json_int_t intval;
> > +
> > + lex_unget_unsave(lex, c);
> > +
> > + saved_text = strbuffer_value(&lex->saved_text);
> > +
> > + errno = 0;
> > + intval = json_strtoint(saved_text, &end, 10);
> > + if (errno == ERANGE) {
> > + if (intval < 0)
> > + error_set(error, lex, json_error_numeric_overflow,
> > + "too big negative integer");
> > + else
> > + error_set(error, lex, json_error_numeric_overflow, "too big
> integer");
> > + goto out;
> > + }
> > +
> > + assert(end == saved_text + lex->saved_text.length);
> > +
> > + lex->token = TOKEN_INTEGER;
> > + lex->value.integer = intval;
> > + return 0;
> > + }
> > +
> > + if (c == '.') {
> > + c = lex_get(lex, error);
> > + if (!l_isdigit(c)) {
> > + lex_unget(lex, c);
> > + goto out;
> > + }
> > + lex_save(lex, c);
> > +
> > + do
> > + c = lex_get_save(lex, error);
> > + while (l_isdigit(c));
> > + }
> > +
> > + if (c == 'E' || c == 'e') {
> > + c = lex_get_save(lex, error);
> > + if (c == '+' || c == '-')
> > + c = lex_get_save(lex, error);
> > +
> > + if (!l_isdigit(c)) {
> > + lex_unget_unsave(lex, c);
> > + goto out;
> > + }
> > +
> > + do
> > + c = lex_get_save(lex, error);
> > + while (l_isdigit(c));
> > + }
> > +
> > + lex_unget_unsave(lex, c);
> > +
> > + if (jsonp_strtod(&lex->saved_text, &doubleval)) {
> > + error_set(error, lex, json_error_numeric_overflow, "real number
> overflow");
> > + goto out;
> > + }
> > +
> > + lex->token = TOKEN_REAL;
> > + lex->value.real = doubleval;
> > + return 0;
> > +
> > +out:
> > + return -1;
> > +}
> > +
> > +static int lex_scan(lex_t *lex, json_error_t *error) {
> > + int c;
> > +
> > + strbuffer_clear(&lex->saved_text);
> > +
> > + if (lex->token == TOKEN_STRING)
> > + lex_free_string(lex);
> > +
> > + do
> > + c = lex_get(lex, error);
> > + while (c == ' ' || c == '\t' || c == '\n' || c == '\r');
> > +
> > + if (c == STREAM_STATE_EOF) {
> > + lex->token = TOKEN_EOF;
> > + goto out;
> > + }
> > +
> > + if (c == STREAM_STATE_ERROR) {
> > + lex->token = TOKEN_INVALID;
> > + goto out;
> > + }
> > +
> > + lex_save(lex, c);
> > +
> > + if (c == '{' || c == '}' || c == '[' || c == ']' || c == ':' || c == ',')
> > + lex->token = c;
> > +
> > + else if (c == '"')
> > + lex_scan_string(lex, error);
> > +
> > + else if (l_isdigit(c) || c == '-') {
> > + if (lex_scan_number(lex, c, error))
> > + goto out;
> > + }
> > +
> > + else if (l_isalpha(c)) {
> > + /* eat up the whole identifier for clearer error messages */
> > + const char *saved_text;
> > +
> > + do
> > + c = lex_get_save(lex, error);
> > + while (l_isalpha(c));
> > + lex_unget_unsave(lex, c);
> > +
> > + saved_text = strbuffer_value(&lex->saved_text);
> > +
> > + if (strcmp(saved_text, "true") == 0)
> > + lex->token = TOKEN_TRUE;
> > + else if (strcmp(saved_text, "false") == 0)
> > + lex->token = TOKEN_FALSE;
> > + else if (strcmp(saved_text, "null") == 0)
> > + lex->token = TOKEN_NULL;
> > + else
> > + lex->token = TOKEN_INVALID;
> > + }
> > +
> > + else {
> > + /* save the rest of the input UTF-8 sequence to get an error
> > + message of valid UTF-8 */
> > + lex_save_cached(lex);
> > + lex->token = TOKEN_INVALID;
> > + }
> > +
> > +out:
> > + return lex->token;
> > +}
> > +
> > +static char *lex_steal_string(lex_t *lex, size_t *out_len) {
> > + char *result = NULL;
> > + if (lex->token == TOKEN_STRING) {
> > + result = lex->value.string.val;
> > + *out_len = lex->value.string.len;
> > + lex->value.string.val = NULL;
> > + lex->value.string.len = 0;
> > + }
> > + return result;
> > +}
> > +
> > +static int lex_init(lex_t *lex, get_func get, size_t flags, void *data) {
> > + stream_init(&lex->stream, get, data);
> > + if (strbuffer_init(&lex->saved_text))
> > + return -1;
> > +
> > + lex->flags = flags;
> > + lex->token = TOKEN_INVALID;
> > + return 0;
> > +}
> > +
> > +static void lex_close(lex_t *lex) {
> > + if (lex->token == TOKEN_STRING)
> > + lex_free_string(lex);
> > + strbuffer_close(&lex->saved_text);
> > +}
> > +
> > +/*** parser ***/
> > +
> > +static json_t *parse_value(lex_t *lex, size_t flags, json_error_t *error);
> > +
> > +static json_t *parse_object(lex_t *lex, size_t flags, json_error_t *error) {
> > + json_t *object = json_object();
> > + if (!object)
> > + return NULL;
> > +
> > + lex_scan(lex, error);
> > + if (lex->token == '}')
> > + return object;
> > +
> > + while (1) {
> > + char *key;
> > + size_t len;
> > + json_t *value;
> > +
> > + if (lex->token != TOKEN_STRING) {
> > + error_set(error, lex, json_error_invalid_syntax, "string or '}'
> expected");
> > + goto error;
> > + }
> > +
> > + key = lex_steal_string(lex, &len);
> > + if (!key)
> > + return NULL;
> > + if (memchr(key, '\0', len)) {
> > + jsonp_free(key);
> > + error_set(error, lex, json_error_null_byte_in_key,
> > + "NUL byte in object key not supported");
> > + goto error;
> > + }
> > +
> > + if (flags & JSON_REJECT_DUPLICATES) {
> > + if (json_object_get(object, key)) {
> > + jsonp_free(key);
> > + error_set(error, lex, json_error_duplicate_key, "duplicate object
> key");
> > + goto error;
> > + }
> > + }
> > +
> > + lex_scan(lex, error);
> > + if (lex->token != ':') {
> > + jsonp_free(key);
> > + error_set(error, lex, json_error_invalid_syntax, "':' expected");
> > + goto error;
> > + }
> > +
> > + lex_scan(lex, error);
> > + value = parse_value(lex, flags, error);
> > + if (!value) {
> > + jsonp_free(key);
> > + goto error;
> > + }
> > +
> > + if (json_object_set_new_nocheck(object, key, value)) {
> > + jsonp_free(key);
> > + goto error;
> > + }
> > +
> > + jsonp_free(key);
> > +
> > + lex_scan(lex, error);
> > + if (lex->token != ',')
> > + break;
> > +
> > + lex_scan(lex, error);
> > + }
> > +
> > + if (lex->token != '}') {
> > + error_set(error, lex, json_error_invalid_syntax, "'}' expected");
> > + goto error;
> > + }
> > +
> > + return object;
> > +
> > +error:
> > + json_decref(object);
> > + return NULL;
> > +}
> > +
> > +static json_t *parse_array(lex_t *lex, size_t flags, json_error_t *error) {
> > + json_t *array = json_array();
> > + if (!array)
> > + return NULL;
> > +
> > + lex_scan(lex, error);
> > + if (lex->token == ']')
> > + return array;
> > +
> > + while (lex->token) {
> > + json_t *elem = parse_value(lex, flags, error);
> > + if (!elem)
> > + goto error;
> > +
> > + if (json_array_append_new(array, elem)) {
> > + goto error;
> > + }
> > +
> > + lex_scan(lex, error);
> > + if (lex->token != ',')
> > + break;
> > +
> > + lex_scan(lex, error);
> > + }
> > +
> > + if (lex->token != ']') {
> > + error_set(error, lex, json_error_invalid_syntax, "']' expected");
> > + goto error;
> > + }
> > +
> > + return array;
> > +
> > +error:
> > + json_decref(array);
> > + return NULL;
> > +}
> > +
> > +static json_t *parse_value(lex_t *lex, size_t flags, json_error_t *error) {
> > + json_t *json;
> > +
> > + lex->depth++;
> > + if (lex->depth > JSON_PARSER_MAX_DEPTH) {
> > + error_set(error, lex, json_error_stack_overflow, "maximum parsing
> depth reached");
> > + return NULL;
> > + }
> > +
> > + switch (lex->token) {
> > + case TOKEN_STRING: {
> > + const char *value = lex->value.string.val;
> > + size_t len = lex->value.string.len;
> > +
> > + if (!(flags & JSON_ALLOW_NUL)) {
> > + if (memchr(value, '\0', len)) {
> > + error_set(error, lex, json_error_null_character,
> > + "\\u0000 is not allowed without JSON_ALLOW_NUL");
> > + return NULL;
> > + }
> > + }
> > +
> > + json = jsonp_stringn_nocheck_own(value, len);
> > + lex->value.string.val = NULL;
> > + lex->value.string.len = 0;
> > + break;
> > + }
> > +
> > + case TOKEN_INTEGER: {
> > + json = json_integer(lex->value.integer);
> > + break;
> > + }
> > +
> > + case TOKEN_REAL: {
> > + json = json_real(lex->value.real);
> > + break;
> > + }
> > +
> > + case TOKEN_TRUE:
> > + json = json_true();
> > + break;
> > +
> > + case TOKEN_FALSE:
> > + json = json_false();
> > + break;
> > +
> > + case TOKEN_NULL:
> > + json = json_null();
> > + break;
> > +
> > + case '{':
> > + json = parse_object(lex, flags, error);
> > + break;
> > +
> > + case '[':
> > + json = parse_array(lex, flags, error);
> > + break;
> > +
> > + case TOKEN_INVALID:
> > + error_set(error, lex, json_error_invalid_syntax, "invalid token");
> > + return NULL;
> > +
> > + default:
> > + error_set(error, lex, json_error_invalid_syntax, "unexpected
> token");
> > + return NULL;
> > + }
> > +
> > + if (!json)
> > + return NULL;
> > +
> > + lex->depth--;
> > + return json;
> > +}
> > +
> > +static json_t *parse_json(lex_t *lex, size_t flags, json_error_t *error) {
> > + json_t *result;
> > +
> > + lex->depth = 0;
> > +
> > + lex_scan(lex, error);
> > + if (!(flags & JSON_DECODE_ANY)) {
> > + if (lex->token != '[' && lex->token != '{') {
> > + error_set(error, lex, json_error_invalid_syntax, "'[' or '{' expected");
> > + return NULL;
> > + }
> > + }
> > +
> > + result = parse_value(lex, flags, error);
> > + if (!result)
> > + return NULL;
> > +
> > + if (!(flags & JSON_DISABLE_EOF_CHECK)) {
> > + lex_scan(lex, error);
> > + if (lex->token != TOKEN_EOF) {
> > + error_set(error, lex, json_error_end_of_input_expected,
> > + "end of file expected");
> > + json_decref(result);
> > + return NULL;
> > + }
> > + }
> > +
> > + if (error) {
> > + /* Save the position even though there was no error */
> > + error->position = (int)lex->stream.position;
> > + }
> > +
> > + return result;
> > +}
> > +
> > +typedef struct {
> > + const char *data;
> > + size_t pos;
> > +} string_data_t;
> > +
> > +static int string_get(void *data) {
> > + char c;
> > + string_data_t *stream = (string_data_t *)data;
> > + c = stream->data[stream->pos];
> > + if (c == '\0')
> > + return EOF;
> > + else {
> > + stream->pos++;
> > + return (unsigned char)c;
> > + }
> > +}
> > +
> > +json_t *json_loads(const char *string, size_t flags, json_error_t *error) {
> > + lex_t lex;
> > + json_t *result;
> > + string_data_t stream_data;
> > +
> > + jsonp_error_init(error, "<string>");
> > +
> > + if (string == NULL) {
> > + error_set(error, NULL, json_error_invalid_argument, "wrong
> arguments");
> > + return NULL;
> > + }
> > +
> > + stream_data.data = string;
> > + stream_data.pos = 0;
> > +
> > + if (lex_init(&lex, string_get, flags, (void *)&stream_data))
> > + return NULL;
> > +
> > + result = parse_json(&lex, flags, error);
> > +
> > + lex_close(&lex);
> > + return result;
> > +}
> > +
> > +typedef struct {
> > + const char *data;
> > + size_t len;
> > + size_t pos;
> > +} buffer_data_t;
> > +
> > +static int buffer_get(void *data) {
> > + char c;
> > + buffer_data_t *stream = data;
> > + if (stream->pos >= stream->len)
> > + return EOF;
> > +
> > + c = stream->data[stream->pos];
> > + stream->pos++;
> > + return (unsigned char)c;
> > +}
> > +
> > +json_t *json_loadb(const char *buffer, size_t buflen, size_t flags,
> json_error_t *error) {
> > + lex_t lex;
> > + json_t *result;
> > + buffer_data_t stream_data;
> > +
> > + jsonp_error_init(error, "<buffer>");
> > +
> > + if (buffer == NULL) {
> > + error_set(error, NULL, json_error_invalid_argument, "wrong
> arguments");
> > + return NULL;
> > + }
> > +
> > + stream_data.data = buffer;
> > + stream_data.pos = 0;
> > + stream_data.len = buflen;
> > +
> > + if (lex_init(&lex, buffer_get, flags, (void *)&stream_data))
> > + return NULL;
> > +
> > + result = parse_json(&lex, flags, error);
> > +
> > + lex_close(&lex);
> > + return result;
> > +}
> > +
> > +json_t *json_loadf(FILE *input, size_t flags, json_error_t *error) {
> > + lex_t lex;
> > + const char *source;
> > + json_t *result;
> > +#ifdef HAVE_UNISTD_H
> > + if (input == stdin)
> > + source = "<stdin>";
> > + else
> > +#endif
> > + source = "<stream>";
> > +
> > + jsonp_error_init(error, source);
> > +
> > + if (input == NULL) {
> > + error_set(error, NULL, json_error_invalid_argument, "wrong
> arguments");
> > + return NULL;
> > + }
> > +
> > + if (lex_init(&lex, (get_func)fgetc, flags, input))
> > + return NULL;
> > +
> > + result = parse_json(&lex, flags, error);
> > +
> > + lex_close(&lex);
> > + return result;
> > +}
> > +
> > +static int fd_get_func(int *fd) {
> > +#ifdef HAVE_UNISTD_H
> > + uint8_t c;
> > + if (read(*fd, &c, 1) == 1)
> > + return c;
> > +#endif
> > + return EOF;
> > +}
> > +
> > +json_t *json_loadfd(int input, size_t flags, json_error_t *error) {
> > + lex_t lex;
> > + const char *source;
> > + json_t *result;
> > +
> > +#ifdef HAVE_UNISTD_H
> > + if (input == STDIN_FILENO)
> > + source = "<stdin>";
> > + else
> > +#endif
> > + source = "<stream>";
> > +
> > + jsonp_error_init(error, source);
> > +
> > + if (input < 0) {
> > + error_set(error, NULL, json_error_invalid_argument, "wrong
> arguments");
> > + return NULL;
> > + }
> > +
> > + if (lex_init(&lex, (get_func)fd_get_func, flags, &input))
> > + return NULL;
> > +
> > + result = parse_json(&lex, flags, error);
> > +
> > + lex_close(&lex);
> > + return result;
> > +}
> > +
> > +json_t *json_load_file(const char *path, size_t flags, json_error_t *error)
> {
> > + json_t *result;
> > + FILE *fp;
> > +
> > + jsonp_error_init(error, path);
> > +
> > + if (path == NULL) {
> > + error_set(error, NULL, json_error_invalid_argument, "wrong
> arguments");
> > + return NULL;
> > + }
> > +
> > + fp = fopen(path, "rb");
> > + if (!fp) {
> > + error_set(error, NULL, json_error_cannot_open_file, "unable to
> open %s: %s", path,
> > + strerror(errno));
> > + return NULL;
> > + }
> > +
> > + result = json_loadf(fp, flags, error);
> > +
> > + fclose(fp);
> > + return result;
> > +}
> > +
> > +#define MAX_BUF_LEN 1024
> > +
> > +typedef struct {
> > + char data[MAX_BUF_LEN];
> > + size_t len;
> > + size_t pos;
> > + json_load_callback_t callback;
> > + void *arg;
> > +} callback_data_t;
> > +
> > +static int callback_get(void *data) {
> > + char c;
> > + callback_data_t *stream = data;
> > +
> > + if (stream->pos >= stream->len) {
> > + stream->pos = 0;
> > + stream->len = stream->callback(stream->data, MAX_BUF_LEN,
> stream->arg);
> > + if (stream->len == 0 || stream->len == (size_t)-1)
> > + return EOF;
> > + }
> > +
> > + c = stream->data[stream->pos];
> > + stream->pos++;
> > + return (unsigned char)c;
> > +}
> > +
> > +json_t *json_load_callback(json_load_callback_t callback, void *arg,
> size_t flags,
> > + json_error_t *error) {
> > + lex_t lex;
> > + json_t *result;
> > +
> > + callback_data_t stream_data;
> > +
> > + memset(&stream_data, 0, sizeof(stream_data));
> > + stream_data.callback = callback;
> > + stream_data.arg = arg;
> > +
> > + jsonp_error_init(error, "<callback>");
> > +
> > + if (callback == NULL) {
> > + error_set(error, NULL, json_error_invalid_argument, "wrong
> arguments");
> > + return NULL;
> > + }
> > +
> > + if (lex_init(&lex, (get_func)callback_get, flags, &stream_data))
> > + return NULL;
> > +
> > + result = parse_json(&lex, flags, error);
> > +
> > + lex_close(&lex);
> > + return result;
> > +}
> > diff --git a/RedfishPkg/Library/JsonLib/math.h
> b/RedfishPkg/Library/JsonLib/math.h
> > new file mode 100644
> > index 0000000000..9a478c0f8a
> > --- /dev/null
> > +++ b/RedfishPkg/Library/JsonLib/math.h
> > @@ -0,0 +1,16 @@
> > +/** @file
> > + Include file to support building the third-party jansson library.
> > +
> > + Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
> > + (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
> > +
> > + SPDX-License-Identifier: BSD-2-Clause-Patent
> > +
> > +**/
> > +
> > +#ifndef JANSSON_CRT_MATH_H_
> > +#define JANSSON_CRT_MATH_H_
> > +
> > +#include <JanssonCrtLibSupport.h>
> > +
> > +#endif
> > diff --git a/RedfishPkg/Library/JsonLib/stdarg.h
> b/RedfishPkg/Library/JsonLib/stdarg.h
> > new file mode 100644
> > index 0000000000..868fcd5cca
> > --- /dev/null
> > +++ b/RedfishPkg/Library/JsonLib/stdarg.h
> > @@ -0,0 +1,15 @@
> > +/** @file
> > + Include file to support building the third-party jansson library.
> > +
> > + Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
> > + (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
> > +
> > + SPDX-License-Identifier: BSD-2-Clause-Patent
> > +
> > +**/
> > +#ifndef JANSSON_CRT_STDARG_H_
> > +#define JANSSON_CRT_STDARG_H_
> > +
> > +#include <JanssonCrtLibSupport.h>
> > +
> > +#endif
> > diff --git a/RedfishPkg/Library/JsonLib/stddef.h
> b/RedfishPkg/Library/JsonLib/stddef.h
> > new file mode 100644
> > index 0000000000..8250f280b3
> > --- /dev/null
> > +++ b/RedfishPkg/Library/JsonLib/stddef.h
> > @@ -0,0 +1,16 @@
> > +/** @file
> > + Include file to support building the third-party jansson library.
> > +
> > + Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
> > + (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
> > +
> > + SPDX-License-Identifier: BSD-2-Clause-Patent
> > +
> > +**/
> > +
> > +#ifndef JANSSON_CRT_STDDEF_H_
> > +#define JANSSON_CRT_STDDEF_H_
> > +
> > +#include <JanssonCrtLibSupport.h>
> > +
> > +#endif
> > diff --git a/RedfishPkg/Library/JsonLib/stdio.h
> b/RedfishPkg/Library/JsonLib/stdio.h
> > new file mode 100644
> > index 0000000000..5aa15b969f
> > --- /dev/null
> > +++ b/RedfishPkg/Library/JsonLib/stdio.h
> > @@ -0,0 +1,15 @@
> > +/** @file
> > + Include file to support building the third-party jansson library.
> > +
> > + Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
> > + (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
> > +
> > + SPDX-License-Identifier: BSD-2-Clause-Patent
> > +
> > +**/
> > +#ifndef JANSSON_CRT_STDIO_H_
> > +#define JANSSON_CRT_STDIO_H_
> > +
> > +#include <JanssonCrtLibSupport.h>
> > +
> > +#endif
> > diff --git a/RedfishPkg/Library/JsonLib/stdlib.h
> b/RedfishPkg/Library/JsonLib/stdlib.h
> > new file mode 100644
> > index 0000000000..dfbfd85655
> > --- /dev/null
> > +++ b/RedfishPkg/Library/JsonLib/stdlib.h
> > @@ -0,0 +1,16 @@
> > +/** @file
> > + Include file to support building the third-party jansson library.
> > +
> > + Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
> > + (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
> > +
> > + SPDX-License-Identifier: BSD-2-Clause-Patent
> > +
> > +**/
> > +
> > +#ifndef JANSSON_CRT_STDLIB_H_
> > +#define JANSSON_CRT_STDLIB_H_
> > +
> > +#include <JanssonCrtLibSupport.h>
> > +
> > +#endif
> > diff --git a/RedfishPkg/Library/JsonLib/string.h
> b/RedfishPkg/Library/JsonLib/string.h
> > new file mode 100644
> > index 0000000000..691de583a3
> > --- /dev/null
> > +++ b/RedfishPkg/Library/JsonLib/string.h
> > @@ -0,0 +1,16 @@
> > +/** @file
> > + Include file to support building the third-party jansson library.
> > +
> > + Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
> > + (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
> > +
> > + SPDX-License-Identifier: BSD-2-Clause-Patent
> > +
> > +**/
> > +
> > +#ifndef JANSSON_CRT_STRING_H_
> > +#define JANSSON_CRT_STRING_H_
> > +
> > +#include <JanssonCrtLibSupport.h>
> > +
> > +#endif
> > diff --git a/RedfishPkg/Library/JsonLib/sys/time.h
> b/RedfishPkg/Library/JsonLib/sys/time.h
> > new file mode 100644
> > index 0000000000..5039c1991c
> > --- /dev/null
> > +++ b/RedfishPkg/Library/JsonLib/sys/time.h
> > @@ -0,0 +1,15 @@
> > +/** @file
> > + Include file to support building the third-party jansson library.
> > +
> > + Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
> > + (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
> > +
> > + SPDX-License-Identifier: BSD-2-Clause-Patent
> > +
> > +**/
> > +#ifndef JANSSON_CRT_SYS_TIME_H_
> > +#define JANSSON_CRT_SYS_TIME_H_
> > +
> > +#include <JanssonCrtLibSupport.h>
> > +
> > +#endif
> > diff --git a/RedfishPkg/Library/JsonLib/sys/types.h
> b/RedfishPkg/Library/JsonLib/sys/types.h
> > new file mode 100644
> > index 0000000000..f2e23cf82f
> > --- /dev/null
> > +++ b/RedfishPkg/Library/JsonLib/sys/types.h
> > @@ -0,0 +1,15 @@
> > +/** @file
> > + Include file to support building the third-party jansson library.
> > +
> > + Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
> > + (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
> > +
> > + SPDX-License-Identifier: BSD-2-Clause-Patent
> > +
> > +**/
> > +#ifndef JANSSON_CRT_SYS_TYPES_H_
> > +#define JANSSON_CRT_SYS_TYPES_H_
> > +
> > +#include <JanssonCrtLibSupport.h>
> > +
> > +#endif
> > diff --git a/RedfishPkg/Library/JsonLib/time.h
> b/RedfishPkg/Library/JsonLib/time.h
> > new file mode 100644
> > index 0000000000..dd05279b24
> > --- /dev/null
> > +++ b/RedfishPkg/Library/JsonLib/time.h
> > @@ -0,0 +1,15 @@
> > +/** @file
> > + Include file to support building the third-party jansson library.
> > +
> > + Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
> > + (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
> > +
> > + SPDX-License-Identifier: BSD-2-Clause-Patent
> > +
> > +**/
> > +#ifndef JANSSON_CRT_TIME_H_
> > +#define JANSSON_CRT_TIME_H_
> > +
> > +#include <JanssonCrtLibSupport.h>
> > +
> > +#endif
> > diff --git a/RedfishPkg/RedfishPkg.ci.yaml b/RedfishPkg/RedfishPkg.ci.yaml
> > index 20c297ad22..78c2814d04 100644
> > --- a/RedfishPkg/RedfishPkg.ci.yaml
> > +++ b/RedfishPkg/RedfishPkg.ci.yaml
> > @@ -17,6 +17,30 @@
> > ],
> > ## Both file path and directory path are accepted.
> > "IgnoreFiles": [
> > + ## Below are files incorporated with open source which are
> > + ## not edk2 coding standard compliant.
> > + ##
> > + ## For jansson library open source
> > + ## load.c is overrided from open source.
> > + "Library/JsonLib/load.c",
> > + ## EDKII JsonLib API to jansson API mapping definitions.
> > + "Include/Library/JanssonJsonLibMapping.h",
> > + ## C runtime library for EDKII JsonLib.
> > + "Library/JsonLib/sys",
> > + "Library/JsonLib/JanssonCrtLibSupport.c",
> > + "Library/JsonLib/JanssonCrtLibSupport.h",
> > + "Library/JsonLib/assert.h",
> > + "Library/JsonLib/errno.h",
> > + "Library/JsonLib/jansson_config.h",
> > + "Library/JsonLib/jansson_private_config.h",
> > + "Library/JsonLib/limits.h",
> > + "Library/JsonLib/math.h",
> > + "Library/JsonLib/stdarg.h",
> > + "Library/JsonLib/stddef.h",
> > + "Library/JsonLib/stdio.h",
> > + "Library/JsonLib/stdlib.h",
> > + "Library/JsonLib/string.h",
> > + "Library/JsonLib/time.h"
> > ]
> > },
> > "CompilerPlugin": {
> > @@ -50,7 +74,14 @@
> > "IgnoreFoldersAndFiles": []
> > },
> > "LibraryClassCheck": {
> > - "IgnoreHeaderFile": []
> > + "IgnoreHeaderFile": [
> > + ## Below header file can be used by open source
> > + ## project which uses jansson library. Use this
> > + ## header file to map jansson native APIs to
> > + ## edk2 JsonLib APIs.This header file doesn't
> > + ## have the corresponding library class.
> > + "Include/Library/JanssonJsonLibMapping.h"
> > + ]
> > },
> >
> > ## options defined ci/Plugin/SpellCheck
> > --
> > 2.17.1
> >
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