server/unicode.c

   1 /*
   2  * Unicode routines for use inside the server
   3  *
   4  * Copyright (C) 1999 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <ctype.h>
  25 #include <stdio.h>
  26
  27 #include "unicode.h"
  28
  29 /* dump a Unicode string with proper escaping */
  30 int dump_strW( const WCHAR *str, size_t len, FILE *f, const char escape[2] )
  31 {
  32     static const char escapes[32] = ".......abtnvfr.............e....";
  33     char buffer[256];
  34     char *pos = buffer;
  35     int count = 0;
  36
  37     for (; len; str++, len--)
  38     {
  39         if (pos > buffer + sizeof(buffer) - 8)
  40         {
  41             fwrite( buffer, pos - buffer, 1, f );
  42             count += pos - buffer;
  43             pos = buffer;
  44         }
  45         if (*str > 127)  /* hex escape */
  46         {
  47             if (len > 1 && str[1] < 128 && isxdigit((char)str[1]))
  48                 pos += sprintf( pos, "\\x%04x", *str );
  49             else
  50                 pos += sprintf( pos, "\\x%x", *str );
  51             continue;
  52         }
  53         if (*str < 32)  /* octal or C escape */
  54         {
  55             if (!*str && len == 1) continue;  /* do not output terminating NULL */
  56             if (escapes[*str] != '.')
  57                 pos += sprintf( pos, "\\%c", escapes[*str] );
  58             else if (len > 1 && str[1] >= '0' && str[1] <= '7')
  59                 pos += sprintf( pos, "\\%03o", *str );
  60             else
  61                 pos += sprintf( pos, "\\%o", *str );
  62             continue;
  63         }
  64         if (*str == '\\' || *str == escape[0] || *str == escape[1]) *pos++ = '\\';
  65         *pos++ = *str;
  66     }
  67     fwrite( buffer, pos - buffer, 1, f );
  68     count += pos - buffer;
  69     return count;
  70 }