src/lib/ecore_txt/ecore_txt.c

   1
   2 #ifdef HAVE_CONFIG_H
   3 # include <config.h>
   4 #endif
   5
   6 #include <iconv.h>
   7 #include <errno.h>
   8 #include <stdlib.h>
   9 #include <stdio.h>
  10 #include <unistd.h>
  11 #include <string.h>
  12
  13 #include "Ecore_Txt.h"
  14 #include "ecore_txt_private.h"
  15
  16
  17 /**
  18  * To be documented.
  19  *
  20  * FIXME: Finish this.
  21  */
  22 EAPI char *
  23 ecore_txt_convert(const char *enc_from, const char *enc_to, const char *text)
  24 {
  25    iconv_t ic;
  26    char *new_txt, *inp, *outp;
  27    size_t inb, outb, outlen, tob, outalloc;
  28
  29    if (!text) return NULL;
  30    ic = iconv_open(enc_to, enc_from);
  31    if (ic == (iconv_t)(-1)) return NULL;
  32    new_txt  = malloc(64);
  33    inb      = strlen(text);
  34    outb     = 64;
  35    inp      = (char*)text;
  36    outp     = new_txt;
  37    outalloc = 64;
  38    outlen   = 0;
  39    tob      = 0;
  40
  41    for (;;)
  42      {
  43         size_t count;
  44
  45         tob = outb;
  46         count = iconv(ic, &inp, &inb, &outp, &outb);
  47         outlen += tob - outb;
  48         if (count == (size_t)(-1))
  49           {
  50              if (errno == E2BIG)
  51                {
  52                   new_txt = realloc(new_txt, outalloc + 64);
  53                   outp = new_txt + outlen;
  54                   outalloc += 64;
  55                   outb += 64;
  56                }
  57              else if (errno == EILSEQ)
  58                {
  59                   if (new_txt) free(new_txt);
  60                   new_txt = NULL;
  61                   break;
  62                }
  63              else if (errno == EINVAL)
  64                {
  65                   if (new_txt) free(new_txt);
  66                   new_txt = NULL;
  67                   break;
  68                }
  69              else
  70                {
  71                   if (new_txt) free(new_txt);
  72                   new_txt = NULL;
  73                   break;
  74                }
  75           }
  76         if (inb == 0)
  77           {
  78              if (outalloc == outlen) new_txt = realloc(new_txt, outalloc + 1);
  79              new_txt[outlen] = 0;
  80              break;
  81           }
  82      }
  83    iconv_close(ic);
  84    return new_txt;
  85 }