lib/charset.c

   1 /*
   2  * Copyright (C) 1996-2018 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 #include "squid.h"
  10 #include "charset.h"
  11
  12 /** Convert ISO-LATIN-1 to UTF-8 */
  13 char *
  14 latin1_to_utf8(char *out, size_t size, const char *in)
  15 {
  16     unsigned char *p = (unsigned char *)out;
  17     for (; *in && size > 2; in++) {
  18         unsigned char ch = (unsigned char)*in;
  19         if (ch < 0x80) {
  20             *p++ = ch;
  21             size--;
  22         } else {
  23             *p++ = (ch >> 6) | 0xc0;
  24             size--;
  25             *p++ = (ch & 0x3f) | 0x80;
  26             size--;
  27         }
  28     }
  29     *p = '\0';
  30     if (*in)
  31         return NULL;
  32     return out;
  33 }
  34