mdw@git.distorted.org.uk Git - sgt/putty/blob - unix/uxucs.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <ctype.h>
   4
   5 #include <time.h>
   6 #include "putty.h"
   7 #include "terminal.h"
   8 #include "misc.h"
   9
  10 /*
  11  * Unix Unicode-handling routines.
  12  *
  13  * FIXME: currently trivial stub versions assuming all codepages
  14  * are ISO8859-1.
  15  */
  16
  17 int is_dbcs_leadbyte(int codepage, char byte)
  18 {
  19     return 0;                          /* we don't do DBCS */
  20 }
  21
  22 int mb_to_wc(int codepage, int flags, char *mbstr, int mblen,
  23              wchar_t *wcstr, int wclen)
  24 {
  25     int ret = 0;
  26     while (mblen > 0 && wclen > 0) {
  27         *wcstr++ = (unsigned char) *mbstr++;
  28         mblen--, wclen--, ret++;
  29     }
  30     return ret;                        /* FIXME: check error codes! */
  31 }
  32
  33 int wc_to_mb(int codepage, int flags, wchar_t *wcstr, int wclen,
  34              char *mbstr, int mblen, char *defchr, int *defused)
  35 {
  36     int ret = 0;
  37     if (defused)
  38         *defused = 0;
  39     while (mblen > 0 && wclen > 0) {
  40         if (*wcstr >= 0x100) {
  41             if (defchr)
  42                 *mbstr++ = *defchr;
  43             else
  44                 *mbstr++ = '.';
  45             if (defused)
  46                 *defused = 1;
  47         } else
  48             *mbstr++ = (unsigned char) *wcstr;
  49         wcstr++;
  50         mblen--, wclen--, ret++;
  51     }
  52     return ret;                        /* FIXME: check error codes! */
  53 }
  54
  55 void init_ucs(void)
  56 {
  57     int i;
  58     /* Find the line control characters. FIXME: this is not right. */
  59     for (i = 0; i < 256; i++)
  60         if (i < ' ' || (i >= 0x7F && i < 0xA0))
  61             unitab_ctrl[i] = i;
  62         else
  63             unitab_ctrl[i] = 0xFF;
  64
  65     for (i = 0; i < 256; i++) {
  66         unitab_line[i] = unitab_scoacs[i] = i;
  67         unitab_xterm[i] = (i >= 0x5F && i < 0x7F) ? ((i+1) & 0x1F) : i;
  68     }
  69 }