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| -rw-r--r-- | norm_charmap.c | 144 |
1 files changed, 0 insertions, 144 deletions
diff --git a/norm_charmap.c b/norm_charmap.c deleted file mode 100644 index 30204871..00000000 --- a/norm_charmap.c +++ /dev/null @@ -1,144 +0,0 @@ -/* - * The Single Unix Specification function nl_langinfo(CODESET) - * returns the name of the encoding used by the currently selected - * locale: - * - * http://www.opengroup.org/onlinepubs/7908799/xsh/langinfo.h.html - * - * Unfortunately the encoding names are not yet standardized. - * This function knows about the encoding names used on many - * different systems and converts them where possible into - * the corresponding MIME charset name registered in - * - * http://www.iana.org/assignments/character-sets - * - * Please extend it as needed and suggest improvements to the author. - * - * Markus.Kuhn@cl.cam.ac.uk -- 2002-03-11 - * Permission to use, copy, modify, and distribute this software - * for any purpose and without fee is hereby granted. The author - * disclaims all warranties with regard to this software. - * - * Latest version: - * - * http://www.cl.cam.ac.uk/~mgk25/ucs/norm_charmap.c - */ - -#include <string.h> - -#ifdef TEST -#include <stdio.h> -#include <locale.h> -#include <langinfo.h> -#endif - -#define digit(x) ((x) >= '0' && (x) <= '9') - -static char buf[16]; - -char *norm_charmap(char *name) -{ - char *p; - - if (!name) - return name; - - /* Many need no remapping, but they are listed here so you - * can see what output to expect, and modify for your needs - * as necessary. */ - if (!strcmp(name, "UTF-8")) - return "UTF-8"; - if (!strcmp(name, "EUC-JP")) - return "EUC-JP"; - if (!strcmp(name, "EUC-KR")) - return "EUC-KR"; - if (!strcmp(name, "EUC-TW")) - return "EUC-TW"; - if (!strcmp(name, "KOI8-R")) - return "KOI8-R"; - if (!strcmp(name, "KOI8-U")) - return "KOI8-U"; - if (!strcmp(name, "GBK")) - return "GBK"; - if (!strcmp(name, "GB2312")) - return "GB2312"; - if (!strcmp(name, "GB18030")) - return "GB18030"; - if (!strcmp(name, "VSCII")) - return "VSCII"; - - /* ASCII comes in many names */ - if (!strcmp(name, "ASCII") || - !strcmp(name, "US-ASCII") || - !strcmp(name, "ANSI_X3.4-1968") || - !strcmp(name, "646") || - !strcmp(name, "ISO646") || - !strcmp(name, "ISO_646.IRV")) - return "US-ASCII"; - - /* ISO 8859 will be converted to "ISO-8859-x" */ - if ((p = strstr(name, "8859-"))) { - memcpy(buf, "ISO-8859-\0\0", 12); - p += 5; - if (digit(*p)) { - buf[9] = *p++; - if (digit(*p)) buf[10] = *p++; - return buf; - } - } - - /* Windows code pages will be converted to "WINDOWS-12xx" */ - if ((p = strstr(name, "CP12"))) { - memcpy(buf, "WINDOWS-12\0\0", 13); - p += 4; - if (digit(*p)) { - buf[10] = *p++; - if (digit(*p)) buf[11] = *p++; - return buf; - } - } - - /* TIS-620 comes in at least the following two forms */ - if (!strcmp(name, "TIS-620") || - !strcmp(name, "TIS620.2533")) - return "ISO-8859-11"; - - /* For some, uppercase/lowercase might differ */ - if (!strcmp(name, "Big5") || !strcmp(name, "BIG5")) - return "Big5"; - if (!strcmp(name, "Big5HKSCS") || !strcmp(name, "BIG5HKSCS")) - return "Big5HKSCS"; - - /* I don't know of any implementation of nl_langinfo(CODESET) out - * there that returns anything else (and I'm not even certain all of - * the above occur in the wild), but just in case, as a fallback, - * return the unmodified name. */ -#ifdef TEST - printf("**** Unknown encoding name '%s'!\n", name); -#endif - return name; -} - -/* For a demo, compile with - * - * gcc -W -Wall -o norm_charmap -D TEST norm_charmap.c - * - * and then test it on all available locales with - * - * for i in `locale -a` ; do printf "$i: " ; LC_ALL=$i ./norm_charmap ; done - */ - -#ifdef TEST -int main(int argc, char **argv) -{ - char *s; - if (argc > 1) - s = argv[1]; - else { - setlocale(LC_CTYPE, ""); - s = nl_langinfo(CODESET); - } - printf("%s -> %s\n", s, norm_charmap(s)); - return 0; -} -#endif |