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/*
** Copyright 1998 - 2000 Double Precision, Inc. See COPYING for
** distribution information.
*/
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include "rfc822.h"
#include "rfc2047.h"
static const char rcsid[]="$Id: rfc2047u.c,v 1.5 2004/05/23 14:28:24 mrsam Exp $";
#if HAVE_LIBUNICODE
#include "../unicode/unicode.h"
struct decode_unicode_s {
const struct unicode_info *mychset;
int options;
char *bufptr;
size_t bufsize;
} ;
static void save_unicode_text(const char *p, int l, struct decode_unicode_s *s)
{
if (s->bufptr)
memcpy(s->bufptr+s->bufsize, p, l);
s->bufsize += l;
}
static int save_unicode(const char *txt, int len, const char *chset,
const char *lang,
void *arg)
{
struct decode_unicode_s *p=(struct decode_unicode_s *)arg;
char *txts=malloc(len+1);
char *s;
int i;
if (!txts)
return (-1);
memcpy(txts, txt, len);
txts[len]=0;
if (!chset)
chset=unicode_ISO8859_1.chset;
s=unicode_convert_fromchset(txts, chset, p->mychset);
if (!s && p->options & RFC2047_DECODE_REPLACE)
{
const struct unicode_info *uiptr=unicode_find(chset);
if (uiptr)
s=unicode_xconvert(txts, uiptr, p->mychset);
}
free(txts);
if (s)
{
save_unicode_text(s, strlen(s), p);
free(s);
return (0);
}
if (p->options & RFC2047_DECODE_ABORT)
{
errno=EINVAL;
return (-1);
}
if (p->options & RFC2047_DECODE_DISCARD)
return (0);
if (!(p->options & RFC2047_DECODE_NOTAG))
{
save_unicode_text(" [", 2, p);
save_unicode_text(chset, strlen(chset), p);
save_unicode_text("] ", 2, p);
if (!(p->options & RFC2047_DECODE_REPLACE))
{
save_unicode_text(txt, len, p);
return (0);
}
}
if (p->options & RFC2047_DECODE_REPLACE)
for (i=0; i < strlen(txt); i++)
save_unicode_text("?", 1, p);
return (0);
}
char *rfc2047_decode_unicode(const char *text,
const struct unicode_info *mychset,
int options)
{
struct decode_unicode_s s;
char *p=0;
s.mychset=mychset;
s.options=0;
s.bufptr=0;
s.bufsize=1;
if (rfc2047_decode(text, &save_unicode, &s))
return (0);
s.bufptr=p=malloc(s.bufsize);
if (!s.bufptr)
return (0);
s.bufsize=0;
if (rfc2047_decode(text, &save_unicode, &s))
{
free(p);
return (0);
}
save_unicode_text("", 1, (void *)&s);
return (p);
}
static char *do_rfc2047_decode_enhanced(const char *text, const char *mychset)
{
const struct unicode_info *u=unicode_find(mychset);
if (!u) u=&unicode_ISO8859_1;
return rfc2047_decode_unicode(text, u, 0);
}
void rfc2047_print_unicode(const struct rfc822a *a,
const char *charset,
void (*print_func)(char, void *),
void (*print_separator)(const char *, void *),
void *ptr)
{
rfc822_print_common(a, &do_rfc2047_decode_enhanced, charset,
print_func, print_separator, ptr);
}
#endif
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