coreutils/lib/localcharset.c

4 /* Determine a canonical name for the current locale's character encoding.
56 #   include <locale.h>
360 /* Determine the current locale's character encoding, and canonicalize it
385      of the locale name from the environment variables (if present) or
389       const char *locale;
392       locale = getenv ("LC_ALL");
393       if (locale == NULL || locale[0] == '\0')
395           locale = getenv ("LC_CTYPE");
396           if (locale == NULL || locale[0] == '\0')
397             locale = getenv ("LANG");
399       if (locale != NULL && locale[0] != '\0')
401           /* If the locale name contains an encoding after the dot, return
403           const char *dot = strchr (locale, '.');
423       /* Woe32 has a function returning the locale's codepage as a number:
442   const char *locale = NULL;
445      (like SunOS 4 or DJGPP) have only the C locale.  Therefore we don't
447      locale name the user has set.  */
449   locale = setlocale (LC_CTYPE, NULL);
451   if (locale == NULL || locale[0] == '\0')
453       locale = getenv ("LC_ALL");
454       if (locale == NULL || locale[0] == '\0')
456           locale = getenv ("LC_CTYPE");
457           if (locale == NULL || locale[0] == '\0')
458             locale = getenv ("LANG");
462   /* On some old systems, one used to set locale = "iso8859_1". On others,
465   codeset = locale;
473   /* Woe32 has a function returning the locale's codepage as a number:
485   const char *locale;
492   locale = getenv ("LC_ALL");
493   if (locale == NULL || locale[0] == '\0')
495       locale = getenv ("LC_CTYPE");
496       if (locale == NULL || locale[0] == '\0')
497         locale = getenv ("LANG");
499   if (locale != NULL && locale[0] != '\0')
501       /* If the locale name contains an encoding after the dot, return it.  */
502       const char *dot = strchr (locale, '.');
522       codeset = locale;
526       /* OS/2 has a function returning the locale's codepage as a number.  */
554      the empty string as denoting "the locale's character encoding",