server/unicode.c

   1 /*
   2  * Unicode routines for use inside the server
   3  *
   4  * Copyright (C) 1999 Alexandre Julliard
   5  */
   6
   7 #include <stdio.h>
   8
   9 #include "unicode.h"
  10
  11 /* dump a Unicode string with proper escaping */
  12 int dump_strW( const WCHAR *str, size_t len, FILE *f, char escape[2] )
  13 {
  14     static const char escapes[32] = ".......abtnvfr.............e....";
  15     char buffer[256];
  16     char *pos = buffer;
  17     int count = 0;
  18
  19     for (; len; str++, len--)
  20     {
  21         if (pos > buffer + sizeof(buffer) - 8)
  22         {
  23             fwrite( buffer, pos - buffer, 1, f );
  24             count += pos - buffer;
  25             pos = buffer;
  26         }
  27         if (*str > 127)  /* hex escape */
  28         {
  29             if (len > 1 && str[1] < 128 && isxdigit((char)str[1]))
  30                 pos += sprintf( pos, "\\x%04x", *str );
  31             else
  32                 pos += sprintf( pos, "\\x%x", *str );
  33             continue;
  34         }
  35         if (*str < 32)  /* octal or C escape */
  36         {
  37             if (!*str && len == 1) continue;  /* do not output terminating NULL */
  38             if (escapes[*str] != '.')
  39                 pos += sprintf( pos, "\\%c", escapes[*str] );
  40             else if (len > 1 && str[1] >= '0' && str[1] <= '7')
  41                 pos += sprintf( pos, "\\%03o", *str );
  42             else
  43                 pos += sprintf( pos, "\\%o", *str );
  44             continue;
  45         }
  46         if (*str == '\\' || *str == escape[0] || *str == escape[1]) *pos++ = '\\';
  47         *pos++ = *str;
  48     }
  49     fwrite( buffer, pos - buffer, 1, f );
  50     count += pos - buffer;
  51     return count;
  52 }