src/lib-charset/charset-ascii.c

	charset-ascii.c revision c7e60c7a4052db86fa90147a52d613d00f720c45
/* Copyright (C) 2002 Timo Sirainen */

#include "lib.h"
#include "charset-utf8.h"

#ifndef HAVE_ICONV_H

#include <ctype.h>

struct _CharsetTranslation {
	int dummy;
};

static CharsetTranslation ascii_translation;

CharsetTranslation *charset_to_utf8_begin(const char *charset,
					  int *unknown_charset)
{
	if (unknown_charset != NULL)
		*unknown_charset = FALSE;

	if (strcasecmp(charset, "us-ascii") != 0 &&
	    strcasecmp(charset, "ascii") != 0) {
		/* no support for non-ascii charsets */
		if (unknown_charset != NULL)
			*unknown_charset = TRUE;
		return NULL;
	}

	return &ascii_translation;
}

void charset_to_utf8_end(CharsetTranslation *t __attr_unused__)
{
}

void charset_to_utf8_reset(CharsetTranslation *t __attr_unused__)
{
}

int charset_to_ucase_utf8(CharsetTranslation *t __attr_unused__,
			  const unsigned char **inbuf, size_t *insize,
			  unsigned char *outbuf, size_t *outsize)
{
	size_t max_size, i;

	max_size = I_MIN(*insize, *outsize);
	for (i = 0; i < max_size; i++)
		outbuf[i] = i_toupper((*inbuf)[i]);

	*insize = 0;
	*outsize = max_size;

	return TRUE;
}

const char *
charset_to_ucase_utf8_string(const char *charset, int *unknown_charset,
			     const unsigned char *buf,
			     size_t *size __attr_unused__)
{
	if (charset == NULL || strcasecmp(charset, "us-ascii") == 0 ||
	    strcasecmp(charset, "ascii") == 0)
		return str_ucase(t_strdup_noconst(buf));

	if (unknown_charset != NULL)
		*unknown_charset = TRUE;
	return NULL;
}

#endif