/usr/include/sigscheme/encoding.h is in libsscm-dev 0.8.5-4ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 | /*===========================================================================
* Filename : encoding.h
* About : Character encoding handling
*
* Copyright (C) 2005 Kazuki Ohta <mover AT hct.zaq.ne.jp>
* Copyright (C) 2005 Jun Inoue <jun.lambda AT gmail.com>
* Copyright (C) 2005-2006 YAMAMOTO Kengo <yamaken AT bp.iij4u.or.jp>
* Copyright (c) 2007-2008 SigScheme Project <uim-en AT googlegroups.com>
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of authors nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
* IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
===========================================================================*/
/*
* This file is intended to be portable. Don't depend on SigScheme and don't
* merge into another file.
*/
#ifndef __SCM_ENCODING_H
#define __SCM_ENCODING_H
#include <sigscheme/config.h>
#include <stddef.h>
#include "scmint.h"
#include "global.h"
#ifdef __cplusplus
extern "C" {
#endif
/*=======================================
Macro Definitions
=======================================*/
#define SCM_MB_MAX_LEN 4
#define SCM_MB_CHAR_BUF_SIZE (SCM_MB_MAX_LEN + sizeof(""))
#define SCM_HAS_2OCT_WCHAR 0
#define SCM_HAS_4OCT_WCHAR 0
#define SCM_MBCINFO_SET_SIZE(inf, siz) ((inf).size = (siz))
#define SCM_MBCINFO_GET_SIZE(inf) ((inf).size)
#if SCM_USE_STATEFUL_ENCODING
#define SCM_MBCINFO_CLEAR_STATE(inf) ((inf).state = 0)
#define SCM_MBCINFO_SET_STATE(inf, stat) ((inf).state = (stat))
#define SCM_MBCINFO_GET_STATE(inf) ((inf).state)
#else /* SCM_USE_STATEFUL_ENCODING */
#define SCM_MBCINFO_CLEAR_STATE(inf) SCM_EMPTY_EXPR
#define SCM_MBCINFO_SET_STATE(inf, stat) SCM_EMPTY_EXPR
#define SCM_MBCINFO_GET_STATE(inf) SCM_MB_STATELESS
#endif /* SCM_USE_STATEFUL_ENCODING */
#define SCM_MBCINFO_CLEAR_FLAG(inf) ((inf).flag = SCM_MBCFLAG_NONE)
#define SCM_MBCINFO_SET_ERROR(inf) ((inf).flag |= SCM_MBCFLAG_ERROR)
#define SCM_MBCINFO_SET_INCOMPLETE(inf) ((inf).flag |= SCM_MBCFLAG_INCOMPLETE)
#define SCM_MBCINFO_ERRORP(inf) ((inf).flag & SCM_MBCFLAG_ERROR)
#define SCM_MBCINFO_INCOMPLETEP(inf) ((inf).flag & SCM_MBCFLAG_INCOMPLETE)
#define SCM_MBCINFO_INIT(inf) \
do { \
SCM_MBCINFO_SET_SIZE((inf), 0); \
SCM_MBCINFO_CLEAR_STATE(inf); \
SCM_MBCINFO_CLEAR_FLAG(inf); \
} while (/* CONSTCOND */ 0)
#define SCM_MBS_SET_STR(mbs, s) ((mbs).str = (s))
#define SCM_MBS_GET_STR(mbs) ((mbs).str)
#define SCM_MBS_SET_SIZE(mbs, siz) ((mbs).size = (siz))
#define SCM_MBS_GET_SIZE(mbs) ((mbs).size)
#if SCM_USE_STATEFUL_ENCODING
#define SCM_MBS_GET_STATE(mbs) ((mbs).state)
#define SCM_MBS_SET_STATE(mbs, stat) ((mbs).state = (stat))
#define SCM_MBS_CLEAR_STATE(mbs) ((mbs).state = 0)
#else
#define SCM_MBS_GET_STATE(mbs) SCM_MB_STATELESS
#define SCM_MBS_SET_STATE(mbs, stat) SCM_EMPTY_EXPR
#define SCM_MBS_CLEAR_STATE(mbs) SCM_EMPTY_EXPR
#endif
#define SCM_MBS_INIT(mbs) SCM_MBS_INIT2((mbs), NULL, 0)
#define SCM_MBS_INIT2(mbs, s, siz) \
do { \
SCM_MBS_SET_STR((mbs), (s)); \
SCM_MBS_SET_SIZE((mbs), (siz)); \
SCM_MBS_CLEAR_STATE(mbs); \
} while (/* CONSTCOND */ 0)
#define SCM_MBS_SKIP_CHAR(mbs, inf) \
do { \
SCM_MBS_SET_STR((mbs), \
SCM_MBS_GET_STR(mbs) + SCM_MBCINFO_GET_SIZE(inf)); \
SCM_MBS_SET_SIZE((mbs), \
SCM_MBS_GET_SIZE(mbs) - SCM_MBCINFO_GET_SIZE(inf)); \
SCM_MBS_SET_STATE((mbs), SCM_MBCINFO_GET_STATE(inf)); \
} while (/* CONSTCOND */ 0)
#define SCM_CHARCODEC_STATEFULP(codec) ((*(codec)->statefulp)())
#define SCM_CHARCODEC_ENCODING(codec) ((*(codec)->encoding)())
#define SCM_CHARCODEC_CCS(codec) ((*(codec)->ccs)())
#define SCM_CHARCODEC_CHAR_LEN(codec, ch) ((*(codec)->char_len)(ch))
#define SCM_CHARCODEC_SCAN_CHAR(codec, mbs) ((*(codec)->scan_char)(mbs))
#define SCM_CHARCODEC_STR2INT(codec, src, len, state) \
((*(codec)->str2int)((src), (len), (state)))
#define SCM_CHARCODEC_INT2STR(codec, dst, ch, state) \
((*(codec)->int2str)((dst), (ch), (state)))
#define SCM_CHARCODEC_READ_CHAR(codec, mbs) \
(scm_charcodec_read_char((codec), &(mbs), SCM_MANGLE(name)))
/*=======================================
Type Definitions
=======================================*/
enum ScmCodedCharSet {
SCM_CCS_UNKNOWN = 0,
SCM_CCS_UNICODE = 1,
SCM_CCS_ISO8859_1 = 10,
SCM_CCS_JIS = 30 /* ASCII + JIS X 0208, 0212, 0213 */
};
/* This type will actually contain some encoding-dependent enum value.
* It might as well be defined as mbstate_t if we're using libc. */
typedef int ScmMultibyteState;
#define SCM_MB_STATELESS 0
enum ScmMultibyteCharFlag {
SCM_MBCFLAG_NONE = 0,
SCM_MBCFLAG_ERROR = 1 << 0,
SCM_MBCFLAG_INCOMPLETE = 1 << 1
};
/* Metadata of a multibyte character. These are usually allocated on
stack or register, so we'll make liberal use of space. */
typedef struct {
#if 0
#if 0
/* will be changed to this */
const scm_byte_t *start;
#else
const char *start;
#endif
#endif
size_t size;
int flag;
#if SCM_USE_STATEFUL_ENCODING
/* Shift state at the *end* of the described character. */
ScmMultibyteState state;
#endif
} ScmMultibyteCharInfo;
typedef struct {
#if 0
/* will be changed to this */
const scm_byte_t *str;
#else
const char *str;
#endif
/* Only the size is stored because ScmObj caches the length, and
* we'll have to traverse from the beginning all the time
* anyway. */
size_t size;
#if SCM_USE_STATEFUL_ENCODING
ScmMultibyteState state;
#endif
} ScmMultibyteString;
typedef struct ScmCharCodecVTbl_ ScmCharCodecVTbl;
typedef const ScmCharCodecVTbl ScmCharCodec;
typedef scm_bool (*ScmCharCodecMethod_statefulp)(void);
typedef const char *(*ScmCharCodecMethod_encoding)(void);
typedef enum ScmCodedCharSet (*ScmCharCodecMethod_ccs)(void);
typedef int (*ScmCharCodecMethod_char_len)(scm_ichar_t ch);
typedef ScmMultibyteCharInfo (*ScmCharCodecMethod_scan_char)(ScmMultibyteString mbs);
typedef scm_ichar_t (*ScmCharCodecMethod_str2int)(const char *src, size_t len,
ScmMultibyteState state);
typedef char *(*ScmCharCodecMethod_int2str)(char *dst, scm_ichar_t ch,
ScmMultibyteState state);
struct ScmCharCodecVTbl_ {
ScmCharCodecMethod_statefulp statefulp;
ScmCharCodecMethod_encoding encoding;
ScmCharCodecMethod_ccs ccs;
ScmCharCodecMethod_char_len char_len;
ScmCharCodecMethod_scan_char scan_char;
ScmCharCodecMethod_str2int str2int;
ScmCharCodecMethod_int2str int2str;
};
/*=======================================
Variable Declarations
=======================================*/
SCM_GLOBAL_VARS_BEGIN(encoding);
ScmCharCodec *scm_current_char_codec;
SCM_GLOBAL_VARS_END(encoding);
#define scm_current_char_codec SCM_GLOBAL_VAR(encoding, scm_current_char_codec)
SCM_DECLARE_EXPORTED_VARS(encoding);
/*=======================================
Function Declarations
=======================================*/
SCM_EXPORT void scm_encoding_init(void);
SCM_EXPORT size_t scm_mb_strlen(ScmCharCodec *codec, ScmMultibyteString mbs);
SCM_EXPORT size_t scm_mb_bare_c_strlen(ScmCharCodec *codec, const char *str);
SCM_EXPORT ScmMultibyteString scm_mb_substring(ScmCharCodec *codec,
ScmMultibyteString str,
size_t i, size_t len);
#define scm_mb_strref(codec, str, i) (scm_mb_substring((codec), (str), (i), 1))
SCM_EXPORT ScmCharCodec *scm_mb_find_codec(const char *encoding);
SCM_EXPORT scm_ichar_t scm_charcodec_read_char(ScmCharCodec *codec,
ScmMultibyteString *mbs,
const char *caller);
#ifdef __cplusplus
}
#endif
#endif /* __SCM_ENCODING_H */
|