Re: [PATCH 2/5] libqos/qgraph_internal: add qos_printf() and qos_printf_literal()

[Christian Schoenebeck <qemu_oss@crudebyte.com>]

On Donnerstag, 28. Januar 2021 11:13:27 CET Thomas Huth wrote:
> On 27/01/2021 00.04, Christian Schoenebeck wrote:
> > These two are macros wrapping regular printf() call. They are intended
> > to be used instead of calling printf() directly in order to avoid
> > breaking TAP output format.
> > 
> > TAP output format is enabled by using --tap command line argument.
> > Starting with glib 2.62 it is enabled by default.
> > 
> > Unfortunately there is currently no public glib API available to check
> > whether TAP output format is enabled. For that reason qos_printf()
> > simply always prepends a '#' character for now.
> > 
> > Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
> > ---
> > 
> >   tests/qtest/libqos/qgraph_internal.h | 11 +++++++++++
> >   1 file changed, 11 insertions(+)
> > 
> > diff --git a/tests/qtest/libqos/qgraph_internal.h
> > b/tests/qtest/libqos/qgraph_internal.h index 974985dce9..c0025f5ab9
> > 100644
> > --- a/tests/qtest/libqos/qgraph_internal.h
> > +++ b/tests/qtest/libqos/qgraph_internal.h
> > @@ -255,4 +255,15 @@ void qos_delete_cmd_line(const char *name);
> > 
> >    */
> >   
> >   void qos_graph_node_set_availability(const char *node, bool av);
> > 
> > +/*
> > + * Prepends a '#' character in front for not breaking TAP output format.
> > + */
> > +#define qos_printf(...) printf("# " __VA_ARGS__)
> > +
> > +/*
> > + * Intended for printing something literally, i.e. for appending text as
> > is + * to a line already been started by qos_printf() before.
> > + */
> > +#define qos_printf_literal printf
> 
> I'd maybe rather name it qos_printf_append ... but that's just a matter of
> taste.
> 
> Reviewed-by: Thomas Huth <thuth@redhat.com>

PING

Best regards,
Christian Schoenebeck