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
13int
14codepageMap(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
44int
45codepageConvert(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
56int
57codepageMap(int cp, int *map)
58{
59  return 0;
60}
61
62int
63codepageConvert(int cp, const char *p)
64{
65  return -1;
66}
67
68#endif /* not WIN32 */
69