[Libguestfs] [PATCH v2 2/4] common/utils: Move libxml2 writer macros to a common header file.

[Pino Toscano]

On Thursday, 4 October 2018 14:03:48 CET Richard W.M. Jones wrote:
> In some places when generating XML output in C code we use some clever
> macros:
> 
>   start_element ("memory") {
>     attribute ("unit", "MiB");
>     string ("%d", g->memsize);
>   } end_element ();
> 
> This commit which is mostly refactoring moves the repeated definitions
> of these macros into a common header file.
> 
> I also took this opportunity to change / clean up the macros:
> 
>  - The macros are now documented properly.
> 
>  - comment() and empty_element() macros are now available everywhere.
> 
>  - Error handling has been made generic.
> 
>  - Added do..while(0) around some of the macros to make them safe to
>    use in all contexts.
> 
>  - Both string() and attribute() take a format string (previously
>    there were string_format() and attribute_format() variants).

I'd still keep these variants, as there is no need for a format string
in case there is already the final string to be used.

-- 
Pino Toscano
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