external/mit/expat/dist/xmlwf/codepage.c

   1 /* Copyright (c) 1998, 1999 Thai Open Source Software Center Ltd
   2    See the file COPYING for copying permission.
   3 */
   4
   5 #include "codepage.h"
   6
   7 #if (defined(WIN32) || (defined(__WATCOMC__) && defined(__NT__)))
   8 #define STRICT 1
   9 #define WIN32_LEAN_AND_MEAN 1
  10
  11 #include <windows.h>
  12
  13 int
  14 codepageMap(int cp, int *map)
  15 {
  16   int i;
  17   CPINFO info;
  18   if (!GetCPInfo(cp, &info) || info.MaxCharSize > 2)
  19     return 0;
  20   for (i = 0; i < 256; i++)
  21     map[i] = -1;
  22   if (info.MaxCharSize > 1) {
  23     for (i = 0; i < MAX_LEADBYTES; i+=2) {
  24       int j, lim;
  25       if (info.LeadByte[i] == 0 && info.LeadByte[i + 1] == 0)
  26         break;
  27       lim = info.LeadByte[i + 1];
  28       for (j = info.LeadByte[i]; j <= lim; j++)
  29         map[j] = -2;
  30     }
  31   }
  32   for (i = 0; i < 256; i++) {
  33    if (map[i] == -1) {
  34      char c = (char)i;
  35      unsigned short n;
  36      if (MultiByteToWideChar(cp, MB_PRECOMPOSED|MB_ERR_INVALID_CHARS,
  37                              &c, 1, &n, 1) == 1)
  38        map[i] = n;
  39    }
  40   }
  41   return 1;
  42 }
  43
  44 int
  45 codepageConvert(int cp, const char *p)
  46 {
  47   unsigned short c;
  48   if (MultiByteToWideChar(cp, MB_PRECOMPOSED|MB_ERR_INVALID_CHARS,
  49                           p, 2, &c, 1) == 1)
  50     return c;
  51   return -1;
  52 }
  53
  54 #else /* not WIN32 */
  55
  56 int
  57 codepageMap(int cp, int *map)
  58 {
  59   return 0;
  60 }
  61
  62 int
  63 codepageConvert(int cp, const char *p)
  64 {
  65   return -1;
  66 }
  67
  68 #endif /* not WIN32 */