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/*
* "streamable kanji code filter and converter"
* Copyright (c) 1998-2002 HappySize, Inc. All rights reserved.
*
* LICENSE NOTICES
*
* This file is part of "streamable kanji code filter and converter",
* which is distributed under the terms of GNU Lesser General Public
* License (version 2) as published by the Free Software Foundation.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with "streamable kanji code filter and converter";
* if not, write to the Free Software Foundation, Inc., 59 Temple Place,
* Suite 330, Boston, MA 02111-1307 USA
*
* The author of this file:
*
*/
/*
* The source code included in this files was separated from mbfilter.h
* by Moriyoshi Koizumi <moriyoshi@php.net> on 20 Dec 2002. The file
* mbfilter.h is included in this package .
*
*/
#ifndef MBFL_ENCODING_H
#define MBFL_ENCODING_H
#include "zend.h"
#include "mbfl_defs.h"
#include "mbfl_consts.h"
enum mbfl_no_encoding {
mbfl_no_encoding_invalid = -1,
mbfl_no_encoding_pass,
mbfl_no_encoding_wchar,
mbfl_no_encoding_base64,
mbfl_no_encoding_uuencode,
mbfl_no_encoding_html_ent,
mbfl_no_encoding_qprint,
mbfl_no_encoding_7bit,
mbfl_no_encoding_8bit,
mbfl_no_encoding_charset_min,
mbfl_no_encoding_ucs4,
mbfl_no_encoding_ucs4be,
mbfl_no_encoding_ucs4le,
mbfl_no_encoding_ucs2,
mbfl_no_encoding_ucs2be,
mbfl_no_encoding_ucs2le,
mbfl_no_encoding_utf32,
mbfl_no_encoding_utf32be,
mbfl_no_encoding_utf32le,
mbfl_no_encoding_utf16,
mbfl_no_encoding_utf16be,
mbfl_no_encoding_utf16le,
mbfl_no_encoding_utf8,
mbfl_no_encoding_utf8_docomo,
mbfl_no_encoding_utf8_kddi_a,
mbfl_no_encoding_utf8_kddi_b,
mbfl_no_encoding_utf8_sb,
mbfl_no_encoding_utf7,
mbfl_no_encoding_utf7imap,
mbfl_no_encoding_ascii,
mbfl_no_encoding_euc_jp,
mbfl_no_encoding_eucjp2004,
mbfl_no_encoding_sjis,
mbfl_no_encoding_eucjp_win,
mbfl_no_encoding_sjis_docomo,
mbfl_no_encoding_sjis_kddi,
mbfl_no_encoding_sjis_sb,
mbfl_no_encoding_sjis_mac,
mbfl_no_encoding_sjis2004,
mbfl_no_encoding_cp932,
mbfl_no_encoding_sjiswin,
mbfl_no_encoding_cp51932,
mbfl_no_encoding_jis,
mbfl_no_encoding_2022jp,
mbfl_no_encoding_2022jp_2004,
mbfl_no_encoding_2022jp_kddi,
mbfl_no_encoding_2022jpms,
mbfl_no_encoding_gb18030,
mbfl_no_encoding_gb18030_2022,
mbfl_no_encoding_cp1252,
mbfl_no_encoding_cp1254,
mbfl_no_encoding_8859_1,
mbfl_no_encoding_8859_2,
mbfl_no_encoding_8859_3,
mbfl_no_encoding_8859_4,
mbfl_no_encoding_8859_5,
mbfl_no_encoding_8859_6,
mbfl_no_encoding_8859_7,
mbfl_no_encoding_8859_8,
mbfl_no_encoding_8859_9,
mbfl_no_encoding_8859_10,
mbfl_no_encoding_8859_13,
mbfl_no_encoding_8859_14,
mbfl_no_encoding_8859_15,
mbfl_no_encoding_euc_cn,
mbfl_no_encoding_cp936,
mbfl_no_encoding_euc_tw,
mbfl_no_encoding_big5,
mbfl_no_encoding_cp950,
mbfl_no_encoding_euc_kr,
mbfl_no_encoding_2022kr,
mbfl_no_encoding_uhc,
mbfl_no_encoding_hz,
mbfl_no_encoding_cp1251,
mbfl_no_encoding_cp866,
mbfl_no_encoding_koi8r,
mbfl_no_encoding_koi8u,
mbfl_no_encoding_8859_16,
mbfl_no_encoding_armscii8,
mbfl_no_encoding_cp850,
mbfl_no_encoding_cp50220,
mbfl_no_encoding_cp50221,
mbfl_no_encoding_cp50222,
mbfl_no_encoding_charset_max
};
struct _mbfl_convert_filter;
struct mbfl_convert_vtbl {
enum mbfl_no_encoding from;
enum mbfl_no_encoding to;
void (*filter_ctor)(struct _mbfl_convert_filter *filter);
void (*filter_dtor)(struct _mbfl_convert_filter *filter);
int (*filter_function)(int c, struct _mbfl_convert_filter *filter);
int (*filter_flush)(struct _mbfl_convert_filter *filter);
void (*filter_copy)(struct _mbfl_convert_filter *src, struct _mbfl_convert_filter *dest);
};
typedef struct {
unsigned char *out;
unsigned char *limit;
uint32_t state;
uint32_t errors;
uint32_t replacement_char;
unsigned int error_mode;
zend_string *str;
} mb_convert_buf;
typedef size_t (*mb_to_wchar_fn)(unsigned char **in, size_t *in_len, uint32_t *out, size_t out_len, unsigned int *state);
typedef void (*mb_from_wchar_fn)(uint32_t *in, size_t in_len, mb_convert_buf *out, bool end);
typedef bool (*mb_check_fn)(unsigned char *in, size_t in_len);
typedef zend_string* (*mb_cut_fn)(unsigned char *str, size_t from, size_t len, unsigned char *end);
/* When converting encoded text to a buffer of wchars (Unicode codepoints) using `mb_to_wchar_fn`,
* the buffer must be at least this size (to work with all supported text encodings) */
#define MBSTRING_MIN_WCHAR_BUFSIZE 5
static inline void mb_convert_buf_init(mb_convert_buf *buf, size_t initsize, uint32_t repl_char, unsigned int err_mode)
{
buf->state = buf->errors = 0;
buf->str = emalloc(_ZSTR_STRUCT_SIZE(initsize));
buf->out = (unsigned char*)ZSTR_VAL(buf->str);
buf->limit = buf->out + initsize;
buf->replacement_char = repl_char;
buf->error_mode = err_mode;
}
#define MB_CONVERT_BUF_ENSURE(buf, out, limit, needed) \
ZEND_ASSERT(out <= limit); \
if ((size_t)(limit - out) < (needed)) { \
size_t oldsize = limit - (unsigned char*)ZSTR_VAL((buf)->str); \
size_t newsize = oldsize + MAX(oldsize >> 1, needed); \
zend_string *newstr = erealloc((buf)->str, _ZSTR_STRUCT_SIZE(newsize)); \
out = (unsigned char*)ZSTR_VAL(newstr) + (out - (unsigned char*)ZSTR_VAL((buf)->str)); \
limit = (unsigned char*)ZSTR_VAL(newstr) + newsize; \
(buf)->str = newstr; \
}
#define MB_CONVERT_BUF_STORE(buf, _out, _limit) (buf)->out = _out; (buf)->limit = _limit
#define MB_CONVERT_BUF_LOAD(buf, _out, _limit) _out = (buf)->out; _limit = (buf)->limit
#define MB_CONVERT_ERROR(buf, out, limit, bad_cp, conv_fn) \
MB_CONVERT_BUF_STORE(buf, out, limit); \
mb_illegal_output(bad_cp, conv_fn, buf); \
MB_CONVERT_BUF_LOAD(buf, out, limit)
static inline unsigned char* mb_convert_buf_add(unsigned char *out, char c)
{
*out++ = c;
return out;
}
static inline unsigned char* mb_convert_buf_add2(unsigned char *out, char c1, char c2)
{
*out++ = c1;
*out++ = c2;
return out;
}
static inline unsigned char* mb_convert_buf_add3(unsigned char *out, char c1, char c2, char c3)
{
*out++ = c1;
*out++ = c2;
*out++ = c3;
return out;
}
static inline unsigned char* mb_convert_buf_add4(unsigned char *out, char c1, char c2, char c3, char c4)
{
*out++ = c1;
*out++ = c2;
*out++ = c3;
*out++ = c4;
return out;
}
static inline unsigned char* mb_convert_buf_appends(unsigned char *out, const char *s)
{
while (*s) {
*out++ = *s++;
}
return out;
}
static inline unsigned char* mb_convert_buf_appendn(unsigned char *out, const char *s, size_t n)
{
while (n--) {
*out++ = *s++;
}
return out;
}
static inline zend_string* mb_convert_buf_result_raw(mb_convert_buf *buf)
{
ZEND_ASSERT(buf->out <= buf->limit);
zend_string *ret = buf->str;
/* See `zend_string_alloc` in zend_string.h */
GC_SET_REFCOUNT(ret, 1);
GC_TYPE_INFO(ret) = GC_STRING;
ZSTR_H(ret) = 0;
ZSTR_LEN(ret) = buf->out - (unsigned char*)ZSTR_VAL(ret);
*(buf->out) = '\0';
return ret;
}
typedef struct {
enum mbfl_no_encoding no_encoding;
const char *name;
const char *mime_name;
const char **aliases;
const unsigned char *mblen_table;
unsigned int flag;
const struct mbfl_convert_vtbl *input_filter;
const struct mbfl_convert_vtbl *output_filter;
mb_to_wchar_fn to_wchar;
mb_from_wchar_fn from_wchar;
mb_check_fn check;
mb_cut_fn cut;
} mbfl_encoding;
extern const mbfl_encoding mbfl_encoding_utf8;
static inline zend_string* mb_convert_buf_result(mb_convert_buf *buf, const mbfl_encoding *enc)
{
zend_string *ret = mb_convert_buf_result_raw(buf);
if (enc == &mbfl_encoding_utf8 && buf->error_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_BADUTF8) {
GC_ADD_FLAGS(ret, IS_STR_VALID_UTF8);
}
return ret;
}
/* Used if we initialize an `mb_convert_buf` but then discover we don't actually
* want to return `zend_string` */
static inline void mb_convert_buf_free(mb_convert_buf *buf)
{
efree(buf->str);
}
static inline size_t mb_convert_buf_len(mb_convert_buf *buf)
{
return buf->out - (unsigned char*)ZSTR_VAL(buf->str);
}
static inline void mb_convert_buf_reset(mb_convert_buf *buf, size_t len)
{
buf->out = (unsigned char*)ZSTR_VAL(buf->str) + len;
ZEND_ASSERT(buf->out <= buf->limit);
}
MBFLAPI extern const mbfl_encoding *mbfl_name2encoding(const char *name);
MBFLAPI extern const mbfl_encoding *mbfl_name2encoding_ex(const char *name, size_t name_len);
MBFLAPI extern const mbfl_encoding *mbfl_no2encoding(enum mbfl_no_encoding no_encoding);
MBFLAPI extern const mbfl_encoding **mbfl_get_supported_encodings(void);
MBFLAPI extern const char *mbfl_no_encoding2name(enum mbfl_no_encoding no_encoding);
MBFLAPI extern const char *mbfl_encoding_preferred_mime_name(const mbfl_encoding *encoding);
#endif /* MBFL_ENCODING_H */
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