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mbfl_encoding.h
/* * "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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