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#include <string.h>
#include "mutt.h"
#include "iconv.h"
#include "lib.h"
#include "charset.h"
/*
* One day, gettext will return strings in the appropriate
* encoding. In the meantime, we use this code to handle
* the conversion.
*/
struct gt_hash_elem
{
const char *key;
char *data;
struct gt_hash_elem *next;
};
#define gt_hash_size 127
static char *get_charset (const char *header)
{
/* FIXME: the comparison should at least be case-insensitive */
const char f[] = "\nContent-Type: text/plain; charset=";
char *charset, *i, *j;
charset = 0;
i = strstr (header, f);
if (i)
{
i += sizeof (f)-1;
for (j = i; *j >= 32; j++)
;
charset = safe_malloc (j-i+1);
memcpy (charset, i, j-i);
charset[j-i] = '\0';
}
return charset;
}
char *mutt_gettext (const char *message)
{
static struct gt_hash_elem **messages = 0;
static char *po_header = 0;
static char *po_charset = 0;
static char *message_charset = 0;
static char *outrepl = "?";
static iconv_t cd = (iconv_t)-1;
int change_cd = 0;
char *t, *orig;
char *header_msgid = "";
/* gettext ("") doesn't work due to __builtin_constant_p optimisation */
if ((t = gettext (header_msgid)) != po_header)
{
po_header = t;
t = get_charset (po_header);
if (t != po_charset &&
(!t || !po_charset || strcmp (t, po_charset)))
{
free (po_charset);
po_charset = t;
change_cd = 1;
}
else
free (t);
}
if (message_charset != Charset &&
(!message_charset || !Charset || strcmp (message_charset, Charset)))
{
free (message_charset);
if (Charset)
{
int n = strlen (Charset);
message_charset = safe_malloc (n+1);
memcpy (message_charset, Charset, n+1);
}
else
message_charset = 0;
outrepl = mutt_is_utf8 (message_charset) ? "\357\277\275" : "?";
change_cd = 1;
}
if (change_cd)
{
if (cd != (iconv_t)-1)
iconv_close (cd);
if (message_charset)
cd = iconv_open (message_charset, po_charset ? po_charset : "UTF-8");
else
cd = (iconv_t)-1;
if (messages)
{
int i;
struct gt_hash_elem *p, *pn;
for (i = 0; i < gt_hash_size; i++)
for (p = messages[i]; p; p = pn)
{
pn = p->next;
free (p);
}
free (messages);
messages = 0;
}
}
orig = gettext (message);
if (cd == (iconv_t)-1)
return orig;
else
{
struct gt_hash_elem *p;
int hash;
char *s, *t;
int n, nn;
const char *ib;
char *ob;
size_t ibl, obl;
if (!messages)
{
messages = safe_malloc (gt_hash_size * sizeof (*messages));
memset (messages, 0, gt_hash_size * sizeof (*messages));
}
hash = (long int)orig % gt_hash_size; /* not very clever */
for (p = messages[hash]; p && p->key != orig; p = p->next)
;
if (p)
return p->data;
n = strlen (orig);
nn = n + 1;
t = safe_malloc (nn);
ib = orig, ibl = n;
ob = t, obl = n;
for (;;)
{
mutt_iconv (cd, &ib, &ibl, &ob, &obl, 0, outrepl);
if (!ibl || obl > 256)
break;
s = t;
safe_realloc ((void **)&t, nn += n);
ob += t - s;
obl += n;
}
*ob = '\0';
n = strlen (t);
s = safe_malloc (n+1);
memcpy (s, t, n+1);
free (t);
p = safe_malloc (sizeof (struct gt_hash_elem));
p->key = orig;
p->data = s;
p->next = messages[hash];
messages[hash] = p;
return s;
}
}
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