[libvirt] [PATCH v2] Add support for YAJL version 2 API/ABI
Daniel P. Berrange
berrange at redhat.com
Mon May 9 16:50:49 UTC 2011
Version 2.0.0 or yajl changed API. It is fairly trivial for us to
cope with both APIs in libvirt, so adapt.
* configure.ac: Probe for yajl2 API
* src/util/json.c: Conditional support for yajl2 API
---
configure.ac | 8 ++++++
src/util/json.c | 74 +++++++++++++++++++++++++++++++++++++++++-------------
2 files changed, 64 insertions(+), 18 deletions(-)
diff --git a/configure.ac b/configure.ac
index dcec371..62c0560 100644
--- a/configure.ac
+++ b/configure.ac
@@ -878,6 +878,7 @@ AC_ARG_WITH([yajl],
YAJL_CFLAGS=
YAJL_LIBS=
+with_yajl2=no
if test "x$with_yajl" != "xno"; then
if test "x$with_yajl" != "xyes" && test "x$with_yajl" != "xcheck"; then
YAJL_CFLAGS="-I$with_yajl/include"
@@ -898,6 +899,9 @@ if test "x$with_yajl" != "xno"; then
AC_CHECK_LIB([yajl], [yajl_parse],[
YAJL_LIBS="$YAJL_LIBS -lyajl"
with_yajl=yes
+ AC_CHECK_LIB([yajl], [yajl_tree_parse],[
+ with_yajl2=yes
+ ],[])
],[
if test "x$with_yajl" = "xcheck" ; then
with_yajl=no
@@ -914,6 +918,10 @@ if test "x$with_yajl" != "xno"; then
AC_DEFINE_UNQUOTED([HAVE_YAJL], 1,
[whether YAJL is available for JSON parsing/formatting])
fi
+ if test "x$with_yajl2" = "xyes" ; then
+ AC_DEFINE_UNQUOTED([HAVE_YAJL2], 1,
+ [whether YAJL has API version 2])
+ fi
fi
AM_CONDITIONAL([HAVE_YAJL], [test "x$with_yajl" = "xyes"])
AC_SUBST([YAJL_CFLAGS])
diff --git a/src/util/json.c b/src/util/json.c
index df4771d..8bbb87b 100644
--- a/src/util/json.c
+++ b/src/util/json.c
@@ -32,6 +32,13 @@
#if HAVE_YAJL
# include <yajl/yajl_gen.h>
# include <yajl/yajl_parse.h>
+
+#ifdef HAVE_YAJL2
+#define yajl_size_t size_t
+#else
+#define yajl_size_t unsigned int
+#endif
+
#endif
/* XXX fixme */
@@ -672,7 +679,7 @@ static int virJSONParserInsertValue(virJSONParserPtr parser,
return 0;
}
-static int virJSONParserHandleNull(void * ctx)
+static int virJSONParserHandleNull(void *ctx)
{
virJSONParserPtr parser = ctx;
virJSONValuePtr value = virJSONValueNewNull();
@@ -690,7 +697,7 @@ static int virJSONParserHandleNull(void * ctx)
return 1;
}
-static int virJSONParserHandleBoolean(void * ctx, int boolean_)
+static int virJSONParserHandleBoolean(void *ctx, int boolean_)
{
virJSONParserPtr parser = ctx;
virJSONValuePtr value = virJSONValueNewBoolean(boolean_);
@@ -708,9 +715,9 @@ static int virJSONParserHandleBoolean(void * ctx, int boolean_)
return 1;
}
-static int virJSONParserHandleNumber(void * ctx,
- const char * s,
- unsigned int l)
+static int virJSONParserHandleNumber(void *ctx,
+ const char *s,
+ yajl_size_t l)
{
virJSONParserPtr parser = ctx;
char *str = strndup(s, l);
@@ -734,9 +741,9 @@ static int virJSONParserHandleNumber(void * ctx,
return 1;
}
-static int virJSONParserHandleString(void * ctx,
- const unsigned char * stringVal,
- unsigned int stringLen)
+static int virJSONParserHandleString(void *ctx,
+ const unsigned char *stringVal,
+ yajl_size_t stringLen)
{
virJSONParserPtr parser = ctx;
virJSONValuePtr value = virJSONValueNewStringLen((const char *)stringVal,
@@ -755,9 +762,9 @@ static int virJSONParserHandleString(void * ctx,
return 1;
}
-static int virJSONParserHandleMapKey(void * ctx,
- const unsigned char * stringVal,
- unsigned int stringLen)
+static int virJSONParserHandleMapKey(void *ctx,
+ const unsigned char *stringVal,
+ yajl_size_t stringLen)
{
virJSONParserPtr parser = ctx;
virJSONParserStatePtr state;
@@ -776,7 +783,7 @@ static int virJSONParserHandleMapKey(void * ctx,
return 1;
}
-static int virJSONParserHandleStartMap(void * ctx)
+static int virJSONParserHandleStartMap(void *ctx)
{
virJSONParserPtr parser = ctx;
virJSONValuePtr value = virJSONValueNewObject();
@@ -803,7 +810,7 @@ static int virJSONParserHandleStartMap(void * ctx)
}
-static int virJSONParserHandleEndMap(void * ctx)
+static int virJSONParserHandleEndMap(void *ctx)
{
virJSONParserPtr parser = ctx;
virJSONParserStatePtr state;
@@ -827,7 +834,7 @@ static int virJSONParserHandleEndMap(void * ctx)
return 1;
}
-static int virJSONParserHandleStartArray(void * ctx)
+static int virJSONParserHandleStartArray(void *ctx)
{
virJSONParserPtr parser = ctx;
virJSONValuePtr value = virJSONValueNewArray();
@@ -853,7 +860,7 @@ static int virJSONParserHandleStartArray(void * ctx)
return 1;
}
-static int virJSONParserHandleEndArray(void * ctx)
+static int virJSONParserHandleEndArray(void *ctx)
{
virJSONParserPtr parser = ctx;
virJSONParserStatePtr state;
@@ -895,14 +902,29 @@ static const yajl_callbacks parserCallbacks = {
/* XXX add an incremental streaming parser - yajl trivially supports it */
virJSONValuePtr virJSONValueFromString(const char *jsonstring)
{
- yajl_parser_config cfg = { 1, 1 };
yajl_handle hand;
virJSONParser parser = { NULL, NULL, 0 };
virJSONValuePtr ret = NULL;
+#ifndef HAVE_YAJL2
+ yajl_parser_config cfg = { 1, 1 };
+#endif
VIR_DEBUG("string=%s", jsonstring);
+#ifdef HAVE_YAJL2
+ hand = yajl_alloc(&parserCallbacks, NULL, &parser);
+ if (hand) {
+ yajl_config(hand, yajl_allow_comments, 1);
+ yajl_config(hand, yajl_dont_validate_strings, 0);
+ }
+#else
hand = yajl_alloc(&parserCallbacks, &cfg, NULL, &parser);
+#endif
+ if (!hand) {
+ virJSONError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("Unable to create JSON parser"));
+ goto cleanup;
+ }
if (yajl_parse(hand,
(const unsigned char *)jsonstring,
@@ -1003,15 +1025,31 @@ static int virJSONValueToStringOne(virJSONValuePtr object,
char *virJSONValueToString(virJSONValuePtr object)
{
- yajl_gen_config conf = { 0, " " }; /* Turns off pretty printing since QEMU can't cope */
yajl_gen g;
const unsigned char *str;
char *ret = NULL;
- unsigned int len;
+ yajl_size_t len;
+#ifndef HAVE_YAJL2
+ yajl_gen_config conf = { 0, " " }; /* Turns off pretty printing since QEMU can't cope */
+#endif
VIR_DEBUG("object=%p", object);
+#ifdef HAVE_YAJL2
+ g = yajl_gen_alloc(NULL);
+ if (g) {
+ yajl_gen_config(g, yajl_gen_beautify, 0);
+ yajl_gen_config(g, yajl_gen_indent_string, " ");
+ yajl_gen_config(g, yajl_gen_validate_utf8, 1);
+ }
+#else
g = yajl_gen_alloc(&conf, NULL);
+#endif
+ if (!g) {
+ virJSONError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("Unable to create JSON formatter"));
+ goto cleanup;
+ }
if (virJSONValueToStringOne(object, g) < 0) {
virReportOOMError();
--
1.7.4.4
More information about the libvir-list
mailing list