missing.h

   1
   2 /* This file contains preprocessor macros which provide substitutes
   3  * for missing functions or other definitions based on the results of
   4  * configure. */
   5
   6 /* We need to be able to pass UTF-8 strings to and from libguile.  The
   7  * most forward-compatible way to do this is to explicitly use the
   8  * "utf8" API for doing so, but this API is only available from Guile
   9  * 2.0 onwards.
  10  *
  11  * In Guile 2.0 there is a similar "locale" API which encodes/decodes
  12  * strings differently based on the locale, so we need to avoid it in
  13  * case the user decides to set a non-UTF-8 locale.  However, the
  14  * "locale" API *is* present in Guile 1.8, in which it doesn't attempt
  15  * to encode/decode the strings its passed, so we can use it as a
  16  * direct replacement for the "utf8" API.
  17  *
  18  * Confused yet?
  19  */
  20
  21 #ifndef HAVE_SCM_FROM_UTF8_STRINGN
  22 #  define scm_from_utf8_stringn scm_from_locale_stringn
  23 #endif
  24 #ifndef HAVE_SCM_FROM_UTF8_STRING
  25 #  define scm_from_utf8_string(x) scm_from_utf8_stringn ((x), -1)
  26 #endif
  27 #ifndef HAVE_SCM_TO_UTF8_STRINGN
  28 #  define scm_to_utf8_stringn scm_to_locale_stringn
  29 #endif
  30 #ifndef HAVE_SCM_TO_UTF8_STRING
  31 #  define scm_to_utf8_string(x) scm_to_utf8_stringn ((x), NULL)
  32 #endif
  33
  34 #ifndef HAVE_SCM_FROM_UTF8_SYMBOLN
  35 #  define scm_from_utf8_symboln scm_from_locale_symboln
  36 #endif
  37 #ifndef HAVE_SCM_FROM_UTF8_SYMBOL
  38 #  define scm_from_utf8_symbol scm_from_locale_symbol
  39 #endif