binutils/winduni.c

   1 /* winduni.c -- unicode support for the windres program.
   2    Copyright 1997, 1998, 2000, 2001, 2003, 2007
   3    Free Software Foundation, Inc.
   4    Written by Ian Lance Taylor, Cygnus Support.
   5
   6    This file is part of GNU Binutils.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
  21    02110-1301, USA.  */
  22
  23 /* This file contains unicode support routines for the windres
  24    program.  Ideally, we would have generic unicode support which
  25    would work on all systems.  However, we don't.  Instead, on a
  26    Windows host, we are prepared to call some Windows routines.  This
  27    means that we will generate different output on Windows and Unix
  28    hosts, but that seems better than not really supporting unicode at
  29    all.  */
  30
  31 #include "sysdep.h"
  32 #include "bfd.h"
  33 #include "winduni.h"
  34 #include "safe-ctype.h"
  35
  36 #ifdef _WIN32
  37 #include <windows.h>
  38 #endif
  39
  40 /* Convert an ASCII string to a unicode string.  We just copy it,
  41    expanding chars to shorts, rather than doing something intelligent.  */
  42
  43 void
  44 unicode_from_ascii (int *length, unichar **unicode, const char *ascii)
  45 {
  46   int len;
  47 #ifndef _WIN32
  48   const char *s;
  49   unsigned short *w;
  50
  51   len = strlen (ascii);
  52   *unicode = ((unichar *) res_alloc ((len + 1) * sizeof (unichar)));
  53   for (s = ascii, w = *unicode; *s != '\0'; s++, w++)
  54     *w = *s & 0xff;
  55   *w = 0;
  56 #else
  57   /* We use  MultiByteToWideChar rather than strlen to get the unicode
  58      string length to allow multibyte "ascii" chars. The value returned
  59      by this function includes the trailing '\0'.  */
  60   len = MultiByteToWideChar (CP_ACP, 0, ascii, -1, NULL, 0);
  61   if (len)
  62     {
  63       *unicode = ((unichar *) res_alloc (len * sizeof (unichar)));
  64       MultiByteToWideChar (CP_ACP, 0, ascii, -1, *unicode, len);
  65     }
  66   /* Discount the trailing '/0'.  If MultiByteToWideChar failed,
  67      this will set *length to -1.  */
  68   len--;
  69 #endif
  70
  71   if (length != NULL)
  72     *length = len;
  73 }
  74
  75 /* Print the unicode string UNICODE to the file E.  LENGTH is the
  76    number of characters to print, or -1 if we should print until the
  77    end of the string.  FIXME: On a Windows host, we should be calling
  78    some Windows function, probably WideCharToMultiByte.  */
  79
  80 void
  81 unicode_print (FILE *e, const unichar *unicode, int length)
  82 {
  83   while (1)
  84     {
  85       unichar ch;
  86
  87       if (length == 0)
  88         return;
  89       if (length > 0)
  90         --length;
  91
  92       ch = *unicode;
  93
  94       if (ch == 0 && length < 0)
  95         return;
  96
  97       ++unicode;
  98
  99       if ((ch & 0x7f) == ch)
 100         {
 101           if (ch == '\\')
 102             fputs ("\\", e);
 103           else if (ISPRINT (ch))
 104             putc (ch, e);
 105           else
 106             {
 107               switch (ch)
 108                 {
 109                 case ESCAPE_A:
 110                   fputs ("\\a", e);
 111                   break;
 112
 113                 case ESCAPE_B:
 114                   fputs ("\\b", e);
 115                   break;
 116
 117                 case ESCAPE_F:
 118                   fputs ("\\f", e);
 119                   break;
 120
 121                 case ESCAPE_N:
 122                   fputs ("\\n", e);
 123                   break;
 124
 125                 case ESCAPE_R:
 126                   fputs ("\\r", e);
 127                   break;
 128
 129                 case ESCAPE_T:
 130                   fputs ("\\t", e);
 131                   break;
 132
 133                 case ESCAPE_V:
 134                   fputs ("\\v", e);
 135                   break;
 136
 137                 default:
 138                   fprintf (e, "\\%03o", (unsigned int) ch);
 139                   break;
 140                 }
 141             }
 142         }
 143       else if ((ch & 0xff) == ch)
 144         fprintf (e, "\\%03o", (unsigned int) ch);
 145       else
 146         fprintf (e, "\\x%x", (unsigned int) ch);
 147     }
 148 }