Re: Feature request: c-snprintf

[John Darrington]

On Tue, Mar 24, 2009 at 11:18:12PM +0100, Bruno Haible wrote:
     
     So, for numbers to strings, there are four ways to proceed:
     
       1) Use the snprintf_l function available on MacOS X 10.5.
          Drawback: Unportable, and gnulib cannot provide an easy replacement 
for
          locale_t on other systems.
     
       2) Switch the locale to "C" temporarily for the duration of the 
conversion.
          Like done in gnulib/lib/c-strtod.c.
          Drawbacks: Will be slow on many systems. Not multi-thread safe.
     
       3) Split the format string into individual format directives, and for 
those
          that convert numbers, call the snprintf function for the current 
locale,
          change decimal_point_char() occurrences to '.', and remove grouping
          characters.
          Drawback: Some code to write yourself.
     
       4) Use code extracted from gnulib/lib/vasnprintf.c, modified to use '.'
          instead of decimal_point_char().
          Drawback: Code duplicatiion.
     
     Opinions?
     
I would have thought option 4 was the best way.  Code duplication
could be minimised by refactoring and wrapping the existing vasnprintf
in a function which calls decimal_point_char and the new one uses '.'
     
J'

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