1 /* -*- buffer-read-only: t -*- vi: set ro: */
2 /* DO NOT EDIT! GENERATED AUTOMATICALLY! */
3 /* Multibyte character data type.
4 Copyright (C) 2001, 2005-2007, 2009-2011 Free Software Foundation, Inc.
6 This program is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19 /* Written by Bruno Haible <bruno@clisp.org>. */
21 /* A multibyte character is a short subsequence of a char* string,
22 representing a single wide character.
24 We use multibyte characters instead of wide characters because of
26 1) correct multibyte handling, i.e. operate according to the LC_CTYPE
28 2) ease of maintenance, i.e. the maintainer needs not know all details
29 of the ISO C 99 standard,
30 3) don't fail grossly if the input is not in the encoding set by the
31 locale, because often different encodings are in use in the same
32 countries (ISO-8859-1/UTF-8, EUC-JP/Shift_JIS, ...),
33 4) fast in the case of ASCII characters,
34 5) portability, i.e. don't make unportable assumptions about wchar_t.
36 Multibyte characters are only accessed through the mb* macros.
39 return a pointer to the beginning of the multibyte sequence.
42 returns the number of bytes occupied by the multibyte sequence.
46 returns true if mbc is the standard ASCII character sc.
49 returns true if mbc is the nul character.
52 returns a positive, zero, or negative value depending on whether mbc1
53 sorts after, same or before mbc2.
55 mb_casecmp (mbc1, mbc2)
56 returns a positive, zero, or negative value depending on whether mbc1
57 sorts after, same or before mbc2, modulo upper/lowercase conversion.
60 returns true if mbc1 and mbc2 are equal.
62 mb_caseequal (mbc1, mbc2)
63 returns true if mbc1 and mbc2 are equal modulo upper/lowercase conversion.
66 returns true if mbc is alphanumeric.
69 returns true if mbc is alphabetic.
72 returns true if mbc is plain ASCII.
75 returns true if mbc is a blank.
78 returns true if mbc is a control character.
81 returns true if mbc is a decimal digit.
84 returns true if mbc is a graphic character.
87 returns true if mbc is lowercase.
90 returns true if mbc is a printable character.
93 returns true if mbc is a punctuation character.
96 returns true if mbc is a space character.
99 returns true if mbc is uppercase.
102 returns true if mbc is a hexadecimal digit.
105 returns the number of columns on the output device occupied by mbc.
108 mb_putc (mbc, stream)
109 outputs mbc on stream, a byte oriented FILE stream opened for output.
111 mb_setascii (&mbc, sc)
112 assigns the standard ASCII character sc to mbc.
114 mb_copy (&destmbc, &srcmbc)
115 copies srcmbc to destmbc.
117 Here are the function prototypes of the macros.
119 extern const char * mb_ptr (const mbchar_t mbc);
120 extern size_t mb_len (const mbchar_t mbc);
121 extern bool mb_iseq (const mbchar_t mbc, char sc);
122 extern bool mb_isnul (const mbchar_t mbc);
123 extern int mb_cmp (const mbchar_t mbc1, const mbchar_t mbc2);
124 extern int mb_casecmp (const mbchar_t mbc1, const mbchar_t mbc2);
125 extern bool mb_equal (const mbchar_t mbc1, const mbchar_t mbc2);
126 extern bool mb_caseequal (const mbchar_t mbc1, const mbchar_t mbc2);
127 extern bool mb_isalnum (const mbchar_t mbc);
128 extern bool mb_isalpha (const mbchar_t mbc);
129 extern bool mb_isascii (const mbchar_t mbc);
130 extern bool mb_isblank (const mbchar_t mbc);
131 extern bool mb_iscntrl (const mbchar_t mbc);
132 extern bool mb_isdigit (const mbchar_t mbc);
133 extern bool mb_isgraph (const mbchar_t mbc);
134 extern bool mb_islower (const mbchar_t mbc);
135 extern bool mb_isprint (const mbchar_t mbc);
136 extern bool mb_ispunct (const mbchar_t mbc);
137 extern bool mb_isspace (const mbchar_t mbc);
138 extern bool mb_isupper (const mbchar_t mbc);
139 extern bool mb_isxdigit (const mbchar_t mbc);
140 extern int mb_width (const mbchar_t mbc);
141 extern void mb_putc (const mbchar_t mbc, FILE *stream);
142 extern void mb_setascii (mbchar_t *new, char sc);
143 extern void mb_copy (mbchar_t *new, const mbchar_t *old);
152 /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
154 BSD/OS 4.1 has a bug: <stdio.h> and <time.h> must be included before
161 #define MBCHAR_BUF_SIZE 24
165 const char *ptr; /* pointer to current character */
166 size_t bytes; /* number of bytes of current character, > 0 */
167 bool wc_valid; /* true if wc is a valid wide character */
168 wchar_t wc; /* if wc_valid: the current character */
169 char buf[MBCHAR_BUF_SIZE]; /* room for the bytes, used for file input only */
172 /* EOF (not a real character) is represented with bytes = 0 and
175 typedef struct mbchar mbchar_t;
177 /* Access the current character. */
178 #define mb_ptr(mbc) ((mbc).ptr)
179 #define mb_len(mbc) ((mbc).bytes)
181 /* Comparison of characters. */
182 #define mb_iseq(mbc, sc) ((mbc).wc_valid && (mbc).wc == (sc))
183 #define mb_isnul(mbc) ((mbc).wc_valid && (mbc).wc == 0)
184 #define mb_cmp(mbc1, mbc2) \
187 ? (int) (mbc1).wc - (int) (mbc2).wc \
191 : (mbc1).bytes == (mbc2).bytes \
192 ? memcmp ((mbc1).ptr, (mbc2).ptr, (mbc1).bytes) \
193 : (mbc1).bytes < (mbc2).bytes \
194 ? (memcmp ((mbc1).ptr, (mbc2).ptr, (mbc1).bytes) > 0 ? 1 : -1) \
195 : (memcmp ((mbc1).ptr, (mbc2).ptr, (mbc2).bytes) >= 0 ? 1 : -1)))
196 #define mb_casecmp(mbc1, mbc2) \
199 ? (int) towlower ((mbc1).wc) - (int) towlower ((mbc2).wc) \
203 : (mbc1).bytes == (mbc2).bytes \
204 ? memcmp ((mbc1).ptr, (mbc2).ptr, (mbc1).bytes) \
205 : (mbc1).bytes < (mbc2).bytes \
206 ? (memcmp ((mbc1).ptr, (mbc2).ptr, (mbc1).bytes) > 0 ? 1 : -1) \
207 : (memcmp ((mbc1).ptr, (mbc2).ptr, (mbc2).bytes) >= 0 ? 1 : -1)))
208 #define mb_equal(mbc1, mbc2) \
209 ((mbc1).wc_valid && (mbc2).wc_valid \
210 ? (mbc1).wc == (mbc2).wc \
211 : (mbc1).bytes == (mbc2).bytes \
212 && memcmp ((mbc1).ptr, (mbc2).ptr, (mbc1).bytes) == 0)
213 #define mb_caseequal(mbc1, mbc2) \
214 ((mbc1).wc_valid && (mbc2).wc_valid \
215 ? towlower ((mbc1).wc) == towlower ((mbc2).wc) \
216 : (mbc1).bytes == (mbc2).bytes \
217 && memcmp ((mbc1).ptr, (mbc2).ptr, (mbc1).bytes) == 0)
219 /* <ctype.h>, <wctype.h> classification. */
220 #define mb_isascii(mbc) \
221 ((mbc).wc_valid && (mbc).wc >= 0 && (mbc).wc <= 127)
222 #define mb_isalnum(mbc) ((mbc).wc_valid && iswalnum ((mbc).wc))
223 #define mb_isalpha(mbc) ((mbc).wc_valid && iswalpha ((mbc).wc))
224 #define mb_isblank(mbc) ((mbc).wc_valid && iswblank ((mbc).wc))
225 #define mb_iscntrl(mbc) ((mbc).wc_valid && iswcntrl ((mbc).wc))
226 #define mb_isdigit(mbc) ((mbc).wc_valid && iswdigit ((mbc).wc))
227 #define mb_isgraph(mbc) ((mbc).wc_valid && iswgraph ((mbc).wc))
228 #define mb_islower(mbc) ((mbc).wc_valid && iswlower ((mbc).wc))
229 #define mb_isprint(mbc) ((mbc).wc_valid && iswprint ((mbc).wc))
230 #define mb_ispunct(mbc) ((mbc).wc_valid && iswpunct ((mbc).wc))
231 #define mb_isspace(mbc) ((mbc).wc_valid && iswspace ((mbc).wc))
232 #define mb_isupper(mbc) ((mbc).wc_valid && iswupper ((mbc).wc))
233 #define mb_isxdigit(mbc) ((mbc).wc_valid && iswxdigit ((mbc).wc))
235 /* Extra <wchar.h> function. */
237 /* Unprintable characters appear as a small box of width 1. */
238 #define MB_UNPRINTABLE_WIDTH 1
241 mb_width_aux (wint_t wc)
243 int w = wcwidth (wc);
244 /* For unprintable characters, arbitrarily return 0 for control characters
245 and MB_UNPRINTABLE_WIDTH otherwise. */
246 return (w >= 0 ? w : iswcntrl (wc) ? 0 : MB_UNPRINTABLE_WIDTH);
249 #define mb_width(mbc) \
250 ((mbc).wc_valid ? mb_width_aux ((mbc).wc) : MB_UNPRINTABLE_WIDTH)
253 #define mb_putc(mbc, stream) fwrite ((mbc).ptr, 1, (mbc).bytes, (stream))
256 #define mb_setascii(mbc, sc) \
257 ((mbc)->ptr = (mbc)->buf, (mbc)->bytes = 1, (mbc)->wc_valid = 1, \
258 (mbc)->wc = (mbc)->buf[0] = (sc))
260 /* Copying a character. */
262 mb_copy (mbchar_t *new_mbc, const mbchar_t *old_mbc)
264 if (old_mbc->ptr == &old_mbc->buf[0])
266 memcpy (&new_mbc->buf[0], &old_mbc->buf[0], old_mbc->bytes);
267 new_mbc->ptr = &new_mbc->buf[0];
270 new_mbc->ptr = old_mbc->ptr;
271 new_mbc->bytes = old_mbc->bytes;
272 if ((new_mbc->wc_valid = old_mbc->wc_valid))
273 new_mbc->wc = old_mbc->wc;
277 /* is_basic(c) tests whether the single-byte character c is in the
278 ISO C "basic character set".
279 This is a convenience function, and is in this file only to share code
280 between mbiter_multi.h and mbfile_multi.h. */
281 #if (' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
282 && ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \
283 && (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \
284 && ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \
285 && ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \
286 && ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \
287 && ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \
288 && ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \
289 && ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \
290 && ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \
291 && ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \
292 && ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \
293 && ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \
294 && ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \
295 && ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \
296 && ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \
297 && ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \
298 && ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \
299 && ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \
300 && ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \
301 && ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \
302 && ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \
303 && ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126)
304 /* The character set is ISO-646, not EBCDIC. */
305 # define IS_BASIC_ASCII 1
307 extern const unsigned int is_basic_table[];
312 return (is_basic_table [(unsigned char) c >> 5] >> ((unsigned char) c & 31))
323 case '\t': case '\v': case '\f':
324 case ' ': case '!': case '"': case '#': case '%':
325 case '&': case '\'': case '(': case ')': case '*':
326 case '+': case ',': case '-': case '.': case '/':
327 case '0': case '1': case '2': case '3': case '4':
328 case '5': case '6': case '7': case '8': case '9':
329 case ':': case ';': case '<': case '=': case '>':
331 case 'A': case 'B': case 'C': case 'D': case 'E':
332 case 'F': case 'G': case 'H': case 'I': case 'J':
333 case 'K': case 'L': case 'M': case 'N': case 'O':
334 case 'P': case 'Q': case 'R': case 'S': case 'T':
335 case 'U': case 'V': case 'W': case 'X': case 'Y':
337 case '[': case '\\': case ']': case '^': case '_':
338 case 'a': case 'b': case 'c': case 'd': case 'e':
339 case 'f': case 'g': case 'h': case 'i': case 'j':
340 case 'k': case 'l': case 'm': case 'n': case 'o':
341 case 'p': case 'q': case 'r': case 's': case 't':
342 case 'u': case 'v': case 'w': case 'x': case 'y':
343 case 'z': case '{': case '|': case '}': case '~':
352 #endif /* _MBCHAR_H */