[libvirt] [PATCH v5 0/3] vsh: Introduce new API for printing tables

[Michal Privoznik]

On 08/24/2018 11:36 AM, Daniel P. Berrangé wrote:
> On Fri, Aug 24, 2018 at 10:59:04AM +0200, Michal Privoznik wrote:
>> On 08/23/2018 05:53 PM, Simon Kobyda wrote:
>>> Created new API for priting tables, mainly to solve alignment problems.
>>> Implemented these test to virsh list. In the future, API may be
>>> everywhere in virsh and virt-admin.
>>> Also wrote basic tests for the new API, and corrected tests in virshtest
>>> which are influenced by implementation of the API in virsh list.
>>>
>>> Changes in v5:
>>> - cleanup and merged code for calculating zero-width, nonprintable and combined
>>> character.
>>> - replaced virBufferAddStr with virBufferAddChar in some places
>>> - in tests moved code for setting correct locale
>>> - fixed few leaks and unitialized values
>>>
>>> Changes in v4:
>>> - fixed width calculation for zero-width, nonprintable and combined
>>> character. (pulled some code from linux-util)
>>> - added tests for cases mentioned above
>>> - changed usage of vshControl variables. From now on PrintToStdout calls
>>> PrintToString and then prints returned string to stdout
>>>
>>> Changes in v3:
>>> - changed encoding of 3/3 patch, otherwise it cannot be applied
>>>
>>> Changes in v2:
>>> - added tests
>>> - fixed alignment for unicode character which span more spaces
>>> - moved ncolumns check to vshTableRowAppend
>>> - changed arguments for functions vshTablePrint, vshTablePrintToStdout,
>>>     vshTablePrintToString
>>>
>>> Simon Kobyda (3):
>>>   vsh: Add API for printing tables.
>>>   virsh: Implement new table API for virsh list
>>>   vsh: Added tests
>>>
>>>  tests/Makefile.am            |   8 +
>>>  tests/virshtest.c            |  14 +-
>>>  tests/vshtabletest.c         | 377 +++++++++++++++++++++++++++++
>>>  tools/Makefile.am            |   4 +-
>>>  tools/virsh-domain-monitor.c |  43 ++--
>>>  tools/vsh-table.c            | 449 +++++++++++++++++++++++++++++++++++
>>>  tools/vsh-table.h            |  42 ++++
>>>  7 files changed, 910 insertions(+), 27 deletions(-)
>>>  create mode 100644 tests/vshtabletest.c
>>>  create mode 100644 tools/vsh-table.c
>>>  create mode 100644 tools/vsh-table.h
>>>
>>
>> ACKed and pushed.
>>
>> Now we can start converting the rest of the code to use vshTable APIs.
> 
> But first fix the build failures :-)
> 
> On CentOS / RHEL:
> 
> https://travis-ci.org/libvirt/libvirt/jobs/420024141
> 
> 
>  4) testUnicode                                                       ... 
> Offset 30
> Expect [государство  
> -----------------------------------------
>  1    fedora28              running      
>  2    🙊🙉🙈rhel7.5🙆🙆🙅]
> Actual [                                                                                    государство  
> -----------------------------------------------------------------------------------------------------------------------------
>  1    fedora28                                                                                                  running      
>  2    \xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xffrhel7.5\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff]
> 

Okay, this is probably due to ancient gcc that's there (4.8.0) and is
supposed to be fixed by adding -finput-charset= onto gcc command line.
Haven't tested it though.

> 
> 
> On Mingw:
> 
> https://travis-ci.org/libvirt/libvirt/jobs/420024142
> 
> vsh-table.c: In function 'vshTableSafeEncode':
> vsh-table.c:274:27: error: implicit declaration of function 'wcwidth' [-Werror=implicit-function-declaration]
>                  *width += wcwidth(wc);
>                            ^~~~~~~
> vsh-table.c:274:27: error: nested extern declaration of 'wcwidth' [-Werror=nested-externs]

But this is weird. wcwidth() manpage says to include wchar.t which we
are doing. Maybe _XOPEN_SOURCE macro is not defined?

Anyway, I'll let Simon to figure this out O:-)

Michal