Annotation of embedaddon/libiconv/srclib/c-ctype.h, revision 1.1.1.3
1.1 misho 1: /* Character handling in C locale.
2:
3: These functions work like the corresponding functions in <ctype.h>,
4: except that they have the C (POSIX) locale hardwired, whereas the
5: <ctype.h> functions' behaviour depends on the current locale set via
6: setlocale.
7:
1.1.1.3 ! misho 8: Copyright (C) 2000-2003, 2006, 2008-2019 Free Software Foundation, Inc.
1.1 misho 9:
10: This program is free software; you can redistribute it and/or modify
11: it under the terms of the GNU General Public License as published by
12: the Free Software Foundation; either version 3 of the License, or
13: (at your option) any later version.
14:
15: This program is distributed in the hope that it will be useful,
16: but WITHOUT ANY WARRANTY; without even the implied warranty of
17: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: GNU General Public License for more details.
19:
20: You should have received a copy of the GNU General Public License
1.1.1.3 ! misho 21: along with this program; if not, see <https://www.gnu.org/licenses/>. */
1.1 misho 22:
23: #ifndef C_CTYPE_H
24: #define C_CTYPE_H
25:
26: #include <stdbool.h>
27:
1.1.1.3 ! misho 28: #ifndef _GL_INLINE_HEADER_BEGIN
! 29: #error "Please include config.h first."
! 30: #endif
! 31: _GL_INLINE_HEADER_BEGIN
! 32: #ifndef C_CTYPE_INLINE
! 33: # define C_CTYPE_INLINE _GL_INLINE
! 34: #endif
1.1 misho 35:
36: #ifdef __cplusplus
37: extern "C" {
38: #endif
39:
40:
41: /* The functions defined in this file assume the "C" locale and a character
42: set without diacritics (ASCII-US or EBCDIC-US or something like that).
43: Even if the "C" locale on a particular system is an extension of the ASCII
44: character set (like on BeOS, where it is UTF-8, or on AmigaOS, where it
45: is ISO-8859-1), the functions in this file recognize only the ASCII
46: characters. */
47:
48:
49: #if (' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
50: && ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \
51: && (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \
52: && ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \
53: && ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \
54: && ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \
55: && ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \
56: && ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \
57: && ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \
58: && ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \
59: && ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \
60: && ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \
61: && ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \
62: && ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \
63: && ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \
64: && ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \
65: && ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \
66: && ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \
67: && ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \
68: && ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \
69: && ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \
70: && ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \
71: && ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126)
72: /* The character set is ASCII or one of its variants or extensions, not EBCDIC.
73: Testing the value of '\n' and '\r' is not relevant. */
1.1.1.3 ! misho 74: # define C_CTYPE_ASCII 1
! 75: #elif ! (' ' == '\x40' && '0' == '\xf0' \
! 76: && 'A' == '\xc1' && 'J' == '\xd1' && 'S' == '\xe2' \
! 77: && 'a' == '\x81' && 'j' == '\x91' && 's' == '\xa2')
! 78: # error "Only ASCII and EBCDIC are supported"
1.1 misho 79: #endif
80:
1.1.1.3 ! misho 81: #if 'A' < 0
! 82: # error "EBCDIC and char is signed -- not supported"
! 83: #endif
! 84:
! 85: /* Cases for control characters. */
! 86:
! 87: #define _C_CTYPE_CNTRL \
! 88: case '\a': case '\b': case '\f': case '\n': \
! 89: case '\r': case '\t': case '\v': \
! 90: _C_CTYPE_OTHER_CNTRL
! 91:
! 92: /* ASCII control characters other than those with \-letter escapes. */
! 93:
! 94: #if C_CTYPE_ASCII
! 95: # define _C_CTYPE_OTHER_CNTRL \
! 96: case '\x00': case '\x01': case '\x02': case '\x03': \
! 97: case '\x04': case '\x05': case '\x06': case '\x0e': \
! 98: case '\x0f': case '\x10': case '\x11': case '\x12': \
! 99: case '\x13': case '\x14': case '\x15': case '\x16': \
! 100: case '\x17': case '\x18': case '\x19': case '\x1a': \
! 101: case '\x1b': case '\x1c': case '\x1d': case '\x1e': \
! 102: case '\x1f': case '\x7f'
! 103: #else
! 104: /* Use EBCDIC code page 1047's assignments for ASCII control chars;
! 105: assume all EBCDIC code pages agree about these assignments. */
! 106: # define _C_CTYPE_OTHER_CNTRL \
! 107: case '\x00': case '\x01': case '\x02': case '\x03': \
! 108: case '\x07': case '\x0e': case '\x0f': case '\x10': \
! 109: case '\x11': case '\x12': case '\x13': case '\x18': \
! 110: case '\x19': case '\x1c': case '\x1d': case '\x1e': \
! 111: case '\x1f': case '\x26': case '\x27': case '\x2d': \
! 112: case '\x2e': case '\x32': case '\x37': case '\x3c': \
! 113: case '\x3d': case '\x3f'
! 114: #endif
! 115:
! 116: /* Cases for lowercase hex letters, and lowercase letters, all offset by N. */
! 117:
! 118: #define _C_CTYPE_LOWER_A_THRU_F_N(N) \
! 119: case 'a' + (N): case 'b' + (N): case 'c' + (N): case 'd' + (N): \
! 120: case 'e' + (N): case 'f' + (N)
! 121: #define _C_CTYPE_LOWER_N(N) \
! 122: _C_CTYPE_LOWER_A_THRU_F_N(N): \
! 123: case 'g' + (N): case 'h' + (N): case 'i' + (N): case 'j' + (N): \
! 124: case 'k' + (N): case 'l' + (N): case 'm' + (N): case 'n' + (N): \
! 125: case 'o' + (N): case 'p' + (N): case 'q' + (N): case 'r' + (N): \
! 126: case 's' + (N): case 't' + (N): case 'u' + (N): case 'v' + (N): \
! 127: case 'w' + (N): case 'x' + (N): case 'y' + (N): case 'z' + (N)
! 128:
! 129: /* Cases for hex letters, digits, lower, punct, and upper. */
! 130:
! 131: #define _C_CTYPE_A_THRU_F \
! 132: _C_CTYPE_LOWER_A_THRU_F_N (0): \
! 133: _C_CTYPE_LOWER_A_THRU_F_N ('A' - 'a')
! 134: #define _C_CTYPE_DIGIT \
! 135: case '0': case '1': case '2': case '3': \
! 136: case '4': case '5': case '6': case '7': \
! 137: case '8': case '9'
! 138: #define _C_CTYPE_LOWER _C_CTYPE_LOWER_N (0)
! 139: #define _C_CTYPE_PUNCT \
! 140: case '!': case '"': case '#': case '$': \
! 141: case '%': case '&': case '\'': case '(': \
! 142: case ')': case '*': case '+': case ',': \
! 143: case '-': case '.': case '/': case ':': \
! 144: case ';': case '<': case '=': case '>': \
! 145: case '?': case '@': case '[': case '\\': \
! 146: case ']': case '^': case '_': case '`': \
! 147: case '{': case '|': case '}': case '~'
! 148: #define _C_CTYPE_UPPER _C_CTYPE_LOWER_N ('A' - 'a')
! 149:
1.1 misho 150:
1.1.1.3 ! misho 151: /* Function definitions. */
1.1 misho 152:
153: /* Unlike the functions in <ctype.h>, which require an argument in the range
154: of the 'unsigned char' type, the functions here operate on values that are
155: in the 'unsigned char' range or in the 'char' range. In other words,
156: when you have a 'char' value, you need to cast it before using it as
157: argument to a <ctype.h> function:
158:
159: const char *s = ...;
160: if (isalpha ((unsigned char) *s)) ...
161:
162: but you don't need to cast it for the functions defined in this file:
163:
164: const char *s = ...;
165: if (c_isalpha (*s)) ...
166: */
167:
1.1.1.3 ! misho 168: C_CTYPE_INLINE bool
! 169: c_isalnum (int c)
! 170: {
! 171: switch (c)
! 172: {
! 173: _C_CTYPE_DIGIT:
! 174: _C_CTYPE_LOWER:
! 175: _C_CTYPE_UPPER:
! 176: return true;
! 177: default:
! 178: return false;
! 179: }
! 180: }
1.1 misho 181:
1.1.1.3 ! misho 182: C_CTYPE_INLINE bool
! 183: c_isalpha (int c)
! 184: {
! 185: switch (c)
! 186: {
! 187: _C_CTYPE_LOWER:
! 188: _C_CTYPE_UPPER:
! 189: return true;
! 190: default:
! 191: return false;
! 192: }
! 193: }
1.1 misho 194:
1.1.1.3 ! misho 195: /* The function isascii is not locale dependent.
! 196: Its use in EBCDIC is questionable. */
! 197: C_CTYPE_INLINE bool
! 198: c_isascii (int c)
! 199: {
! 200: switch (c)
! 201: {
! 202: case ' ':
! 203: _C_CTYPE_CNTRL:
! 204: _C_CTYPE_DIGIT:
! 205: _C_CTYPE_LOWER:
! 206: _C_CTYPE_PUNCT:
! 207: _C_CTYPE_UPPER:
! 208: return true;
! 209: default:
! 210: return false;
! 211: }
! 212: }
1.1 misho 213:
1.1.1.3 ! misho 214: C_CTYPE_INLINE bool
! 215: c_isblank (int c)
! 216: {
! 217: return c == ' ' || c == '\t';
! 218: }
1.1 misho 219:
1.1.1.3 ! misho 220: C_CTYPE_INLINE bool
! 221: c_iscntrl (int c)
! 222: {
! 223: switch (c)
! 224: {
! 225: _C_CTYPE_CNTRL:
! 226: return true;
! 227: default:
! 228: return false;
! 229: }
! 230: }
1.1 misho 231:
1.1.1.3 ! misho 232: C_CTYPE_INLINE bool
! 233: c_isdigit (int c)
! 234: {
! 235: switch (c)
! 236: {
! 237: _C_CTYPE_DIGIT:
! 238: return true;
! 239: default:
! 240: return false;
! 241: }
! 242: }
1.1 misho 243:
1.1.1.3 ! misho 244: C_CTYPE_INLINE bool
! 245: c_isgraph (int c)
! 246: {
! 247: switch (c)
! 248: {
! 249: _C_CTYPE_DIGIT:
! 250: _C_CTYPE_LOWER:
! 251: _C_CTYPE_PUNCT:
! 252: _C_CTYPE_UPPER:
! 253: return true;
! 254: default:
! 255: return false;
! 256: }
! 257: }
1.1 misho 258:
1.1.1.3 ! misho 259: C_CTYPE_INLINE bool
! 260: c_islower (int c)
! 261: {
! 262: switch (c)
! 263: {
! 264: _C_CTYPE_LOWER:
! 265: return true;
! 266: default:
! 267: return false;
! 268: }
! 269: }
1.1 misho 270:
1.1.1.3 ! misho 271: C_CTYPE_INLINE bool
! 272: c_isprint (int c)
! 273: {
! 274: switch (c)
! 275: {
! 276: case ' ':
! 277: _C_CTYPE_DIGIT:
! 278: _C_CTYPE_LOWER:
! 279: _C_CTYPE_PUNCT:
! 280: _C_CTYPE_UPPER:
! 281: return true;
! 282: default:
! 283: return false;
! 284: }
! 285: }
1.1 misho 286:
1.1.1.3 ! misho 287: C_CTYPE_INLINE bool
! 288: c_ispunct (int c)
! 289: {
! 290: switch (c)
! 291: {
! 292: _C_CTYPE_PUNCT:
! 293: return true;
! 294: default:
! 295: return false;
! 296: }
! 297: }
1.1 misho 298:
1.1.1.3 ! misho 299: C_CTYPE_INLINE bool
! 300: c_isspace (int c)
! 301: {
! 302: switch (c)
! 303: {
! 304: case ' ': case '\t': case '\n': case '\v': case '\f': case '\r':
! 305: return true;
! 306: default:
! 307: return false;
! 308: }
! 309: }
1.1 misho 310:
1.1.1.3 ! misho 311: C_CTYPE_INLINE bool
! 312: c_isupper (int c)
! 313: {
! 314: switch (c)
! 315: {
! 316: _C_CTYPE_UPPER:
! 317: return true;
! 318: default:
! 319: return false;
! 320: }
! 321: }
1.1 misho 322:
1.1.1.3 ! misho 323: C_CTYPE_INLINE bool
! 324: c_isxdigit (int c)
! 325: {
! 326: switch (c)
! 327: {
! 328: _C_CTYPE_DIGIT:
! 329: _C_CTYPE_A_THRU_F:
! 330: return true;
! 331: default:
! 332: return false;
! 333: }
! 334: }
1.1 misho 335:
1.1.1.3 ! misho 336: C_CTYPE_INLINE int
! 337: c_tolower (int c)
! 338: {
! 339: switch (c)
! 340: {
! 341: _C_CTYPE_UPPER:
! 342: return c - 'A' + 'a';
! 343: default:
! 344: return c;
! 345: }
! 346: }
1.1 misho 347:
1.1.1.3 ! misho 348: C_CTYPE_INLINE int
! 349: c_toupper (int c)
! 350: {
! 351: switch (c)
! 352: {
! 353: _C_CTYPE_LOWER:
! 354: return c - 'a' + 'A';
! 355: default:
! 356: return c;
! 357: }
! 358: }
1.1 misho 359:
360: #ifdef __cplusplus
361: }
362: #endif
363:
1.1.1.3 ! misho 364: _GL_INLINE_HEADER_END
! 365:
1.1 misho 366: #endif /* C_CTYPE_H */
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