binutils/winduni.c

   1 /* winduni.c -- unicode support for the windres program.
   2    Copyright 1997, 1998, 2000, 2001, 2003 Free Software Foundation, Inc.
   3    Written by Ian Lance Taylor, Cygnus Support.
   4
   5    This file is part of GNU Binutils.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
  20    02110-1301, USA.  */
  21
  22 /* This file contains unicode support routines for the windres
  23    program.  Ideally, we would have generic unicode support which
  24    would work on all systems.  However, we don't.  Instead, on a
  25    Windows host, we are prepared to call some Windows routines.  This
  26    means that we will generate different output on Windows and Unix
  27    hosts, but that seems better than not really supporting unicode at
  28    all.  */
  29
  30 #include "bfd.h"
  31 #include "bucomm.h"
  32 #include "winduni.h"
  33 #include "safe-ctype.h"
  34
  35 #ifdef _WIN32
  36 #include <windows.h>
  37 #endif
  38
  39 /* Convert an ASCII string to a unicode string.  We just copy it,
  40    expanding chars to shorts, rather than doing something intelligent.  */
  41
  42 void
  43 unicode_from_ascii (int *length, unichar **unicode, const char *ascii)
  44 {
  45   int len;
  46 #ifndef _WIN32
  47   const char *s;
  48   unsigned short *w;
  49
  50   len = strlen (ascii);
  51   *unicode = ((unichar *) res_alloc ((len + 1) * sizeof (unichar)));
  52   for (s = ascii, w = *unicode; *s != '\0'; s++, w++)
  53     *w = *s & 0xff;
  54   *w = 0;
  55 #else
  56   /* We use  MultiByteToWideChar rather than strlen to get the unicode
  57      string length to allow multibyte "ascii" chars. The value returned
  58      by this function includes the trailing '\0'.  */
  59   len = MultiByteToWideChar (CP_ACP, 0, ascii, -1, NULL, 0);
  60   if (len)
  61     {
  62       *unicode = ((unichar *) res_alloc (len * sizeof (unichar)));
  63       MultiByteToWideChar (CP_ACP, 0, ascii, -1, *unicode, len);
  64     }
  65   /* Discount the trailing '/0'.  If MultiByteToWideChar failed,
  66      this will set *length to -1.  */
  67   len--;
  68 #endif
  69
  70   if (length != NULL)
  71     *length = len;
  72 }
  73
  74 /* Print the unicode string UNICODE to the file E.  LENGTH is the
  75    number of characters to print, or -1 if we should print until the
  76    end of the string.  FIXME: On a Windows host, we should be calling
  77    some Windows function, probably WideCharToMultiByte.  */
  78
  79 void
  80 unicode_print (FILE *e, const unichar *unicode, int length)
  81 {
  82   while (1)
  83     {
  84       unichar ch;
  85
  86       if (length == 0)
  87         return;
  88       if (length > 0)
  89         --length;
  90
  91       ch = *unicode;
  92
  93       if (ch == 0 && length < 0)
  94         return;
  95
  96       ++unicode;
  97
  98       if ((ch & 0x7f) == ch)
  99         {
 100           if (ch == '\\')
 101             fputs ("\\", e);
 102           else if (ISPRINT (ch))
 103             putc (ch, e);
 104           else
 105             {
 106               switch (ch)
 107                 {
 108                 case ESCAPE_A:
 109                   fputs ("\\a", e);
 110                   break;
 111
 112                 case ESCAPE_B:
 113                   fputs ("\\b", e);
 114                   break;
 115
 116                 case ESCAPE_F:
 117                   fputs ("\\f", e);
 118                   break;
 119
 120                 case ESCAPE_N:
 121                   fputs ("\\n", e);
 122                   break;
 123
 124                 case ESCAPE_R:
 125                   fputs ("\\r", e);
 126                   break;
 127
 128                 case ESCAPE_T:
 129                   fputs ("\\t", e);
 130                   break;
 131
 132                 case ESCAPE_V:
 133                   fputs ("\\v", e);
 134                   break;
 135
 136                 default:
 137                   fprintf (e, "\\%03o", (unsigned int) ch);
 138                   break;
 139                 }
 140             }
 141         }
 142       else if ((ch & 0xff) == ch)
 143         fprintf (e, "\\%03o", (unsigned int) ch);
 144       else
 145         fprintf (e, "\\x%x", (unsigned int) ch);
 146     }
 147 }