Annotation of embedaddon/libiconv/srclib/c-ctype.h, revision 1.1
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:
! 8: Copyright (C) 2000-2003, 2006, 2008 Free Software Foundation, Inc.
! 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
! 21: along with this program; if not, write to the Free Software Foundation,
! 22: Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
! 23:
! 24: #ifndef C_CTYPE_H
! 25: #define C_CTYPE_H
! 26:
! 27: #include <stdbool.h>
! 28:
! 29:
! 30: #ifdef __cplusplus
! 31: extern "C" {
! 32: #endif
! 33:
! 34:
! 35: /* The functions defined in this file assume the "C" locale and a character
! 36: set without diacritics (ASCII-US or EBCDIC-US or something like that).
! 37: Even if the "C" locale on a particular system is an extension of the ASCII
! 38: character set (like on BeOS, where it is UTF-8, or on AmigaOS, where it
! 39: is ISO-8859-1), the functions in this file recognize only the ASCII
! 40: characters. */
! 41:
! 42:
! 43: /* Check whether the ASCII optimizations apply. */
! 44:
! 45: /* ANSI C89 (and ISO C99 5.2.1.3 too) already guarantees that
! 46: '0', '1', ..., '9' have consecutive integer values. */
! 47: #define C_CTYPE_CONSECUTIVE_DIGITS 1
! 48:
! 49: #if ('A' <= 'Z') \
! 50: && ('A' + 1 == 'B') && ('B' + 1 == 'C') && ('C' + 1 == 'D') \
! 51: && ('D' + 1 == 'E') && ('E' + 1 == 'F') && ('F' + 1 == 'G') \
! 52: && ('G' + 1 == 'H') && ('H' + 1 == 'I') && ('I' + 1 == 'J') \
! 53: && ('J' + 1 == 'K') && ('K' + 1 == 'L') && ('L' + 1 == 'M') \
! 54: && ('M' + 1 == 'N') && ('N' + 1 == 'O') && ('O' + 1 == 'P') \
! 55: && ('P' + 1 == 'Q') && ('Q' + 1 == 'R') && ('R' + 1 == 'S') \
! 56: && ('S' + 1 == 'T') && ('T' + 1 == 'U') && ('U' + 1 == 'V') \
! 57: && ('V' + 1 == 'W') && ('W' + 1 == 'X') && ('X' + 1 == 'Y') \
! 58: && ('Y' + 1 == 'Z')
! 59: #define C_CTYPE_CONSECUTIVE_UPPERCASE 1
! 60: #endif
! 61:
! 62: #if ('a' <= 'z') \
! 63: && ('a' + 1 == 'b') && ('b' + 1 == 'c') && ('c' + 1 == 'd') \
! 64: && ('d' + 1 == 'e') && ('e' + 1 == 'f') && ('f' + 1 == 'g') \
! 65: && ('g' + 1 == 'h') && ('h' + 1 == 'i') && ('i' + 1 == 'j') \
! 66: && ('j' + 1 == 'k') && ('k' + 1 == 'l') && ('l' + 1 == 'm') \
! 67: && ('m' + 1 == 'n') && ('n' + 1 == 'o') && ('o' + 1 == 'p') \
! 68: && ('p' + 1 == 'q') && ('q' + 1 == 'r') && ('r' + 1 == 's') \
! 69: && ('s' + 1 == 't') && ('t' + 1 == 'u') && ('u' + 1 == 'v') \
! 70: && ('v' + 1 == 'w') && ('w' + 1 == 'x') && ('x' + 1 == 'y') \
! 71: && ('y' + 1 == 'z')
! 72: #define C_CTYPE_CONSECUTIVE_LOWERCASE 1
! 73: #endif
! 74:
! 75: #if (' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
! 76: && ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \
! 77: && (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \
! 78: && ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \
! 79: && ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \
! 80: && ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \
! 81: && ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \
! 82: && ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \
! 83: && ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \
! 84: && ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \
! 85: && ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \
! 86: && ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \
! 87: && ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \
! 88: && ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \
! 89: && ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \
! 90: && ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \
! 91: && ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \
! 92: && ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \
! 93: && ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \
! 94: && ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \
! 95: && ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \
! 96: && ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \
! 97: && ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126)
! 98: /* The character set is ASCII or one of its variants or extensions, not EBCDIC.
! 99: Testing the value of '\n' and '\r' is not relevant. */
! 100: #define C_CTYPE_ASCII 1
! 101: #endif
! 102:
! 103:
! 104: /* Function declarations. */
! 105:
! 106: /* Unlike the functions in <ctype.h>, which require an argument in the range
! 107: of the 'unsigned char' type, the functions here operate on values that are
! 108: in the 'unsigned char' range or in the 'char' range. In other words,
! 109: when you have a 'char' value, you need to cast it before using it as
! 110: argument to a <ctype.h> function:
! 111:
! 112: const char *s = ...;
! 113: if (isalpha ((unsigned char) *s)) ...
! 114:
! 115: but you don't need to cast it for the functions defined in this file:
! 116:
! 117: const char *s = ...;
! 118: if (c_isalpha (*s)) ...
! 119: */
! 120:
! 121: extern bool c_isascii (int c); /* not locale dependent */
! 122:
! 123: extern bool c_isalnum (int c);
! 124: extern bool c_isalpha (int c);
! 125: extern bool c_isblank (int c);
! 126: extern bool c_iscntrl (int c);
! 127: extern bool c_isdigit (int c);
! 128: extern bool c_islower (int c);
! 129: extern bool c_isgraph (int c);
! 130: extern bool c_isprint (int c);
! 131: extern bool c_ispunct (int c);
! 132: extern bool c_isspace (int c);
! 133: extern bool c_isupper (int c);
! 134: extern bool c_isxdigit (int c);
! 135:
! 136: extern int c_tolower (int c);
! 137: extern int c_toupper (int c);
! 138:
! 139:
! 140: #if defined __GNUC__ && defined __OPTIMIZE__ && !defined __OPTIMIZE_SIZE__ && !defined NO_C_CTYPE_MACROS
! 141:
! 142: /* ASCII optimizations. */
! 143:
! 144: #undef c_isascii
! 145: #define c_isascii(c) \
! 146: ({ int __c = (c); \
! 147: (__c >= 0x00 && __c <= 0x7f); \
! 148: })
! 149:
! 150: #if C_CTYPE_CONSECUTIVE_DIGITS \
! 151: && C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE
! 152: #if C_CTYPE_ASCII
! 153: #undef c_isalnum
! 154: #define c_isalnum(c) \
! 155: ({ int __c = (c); \
! 156: ((__c >= '0' && __c <= '9') \
! 157: || ((__c & ~0x20) >= 'A' && (__c & ~0x20) <= 'Z')); \
! 158: })
! 159: #else
! 160: #undef c_isalnum
! 161: #define c_isalnum(c) \
! 162: ({ int __c = (c); \
! 163: ((__c >= '0' && __c <= '9') \
! 164: || (__c >= 'A' && __c <= 'Z') \
! 165: || (__c >= 'a' && __c <= 'z')); \
! 166: })
! 167: #endif
! 168: #endif
! 169:
! 170: #if C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE
! 171: #if C_CTYPE_ASCII
! 172: #undef c_isalpha
! 173: #define c_isalpha(c) \
! 174: ({ int __c = (c); \
! 175: ((__c & ~0x20) >= 'A' && (__c & ~0x20) <= 'Z'); \
! 176: })
! 177: #else
! 178: #undef c_isalpha
! 179: #define c_isalpha(c) \
! 180: ({ int __c = (c); \
! 181: ((__c >= 'A' && __c <= 'Z') || (__c >= 'a' && __c <= 'z')); \
! 182: })
! 183: #endif
! 184: #endif
! 185:
! 186: #undef c_isblank
! 187: #define c_isblank(c) \
! 188: ({ int __c = (c); \
! 189: (__c == ' ' || __c == '\t'); \
! 190: })
! 191:
! 192: #if C_CTYPE_ASCII
! 193: #undef c_iscntrl
! 194: #define c_iscntrl(c) \
! 195: ({ int __c = (c); \
! 196: ((__c & ~0x1f) == 0 || __c == 0x7f); \
! 197: })
! 198: #endif
! 199:
! 200: #if C_CTYPE_CONSECUTIVE_DIGITS
! 201: #undef c_isdigit
! 202: #define c_isdigit(c) \
! 203: ({ int __c = (c); \
! 204: (__c >= '0' && __c <= '9'); \
! 205: })
! 206: #endif
! 207:
! 208: #if C_CTYPE_CONSECUTIVE_LOWERCASE
! 209: #undef c_islower
! 210: #define c_islower(c) \
! 211: ({ int __c = (c); \
! 212: (__c >= 'a' && __c <= 'z'); \
! 213: })
! 214: #endif
! 215:
! 216: #if C_CTYPE_ASCII
! 217: #undef c_isgraph
! 218: #define c_isgraph(c) \
! 219: ({ int __c = (c); \
! 220: (__c >= '!' && __c <= '~'); \
! 221: })
! 222: #endif
! 223:
! 224: #if C_CTYPE_ASCII
! 225: #undef c_isprint
! 226: #define c_isprint(c) \
! 227: ({ int __c = (c); \
! 228: (__c >= ' ' && __c <= '~'); \
! 229: })
! 230: #endif
! 231:
! 232: #if C_CTYPE_ASCII
! 233: #undef c_ispunct
! 234: #define c_ispunct(c) \
! 235: ({ int _c = (c); \
! 236: (c_isgraph (_c) && ! c_isalnum (_c)); \
! 237: })
! 238: #endif
! 239:
! 240: #undef c_isspace
! 241: #define c_isspace(c) \
! 242: ({ int __c = (c); \
! 243: (__c == ' ' || __c == '\t' \
! 244: || __c == '\n' || __c == '\v' || __c == '\f' || __c == '\r'); \
! 245: })
! 246:
! 247: #if C_CTYPE_CONSECUTIVE_UPPERCASE
! 248: #undef c_isupper
! 249: #define c_isupper(c) \
! 250: ({ int __c = (c); \
! 251: (__c >= 'A' && __c <= 'Z'); \
! 252: })
! 253: #endif
! 254:
! 255: #if C_CTYPE_CONSECUTIVE_DIGITS \
! 256: && C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE
! 257: #if C_CTYPE_ASCII
! 258: #undef c_isxdigit
! 259: #define c_isxdigit(c) \
! 260: ({ int __c = (c); \
! 261: ((__c >= '0' && __c <= '9') \
! 262: || ((__c & ~0x20) >= 'A' && (__c & ~0x20) <= 'F')); \
! 263: })
! 264: #else
! 265: #undef c_isxdigit
! 266: #define c_isxdigit(c) \
! 267: ({ int __c = (c); \
! 268: ((__c >= '0' && __c <= '9') \
! 269: || (__c >= 'A' && __c <= 'F') \
! 270: || (__c >= 'a' && __c <= 'f')); \
! 271: })
! 272: #endif
! 273: #endif
! 274:
! 275: #if C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE
! 276: #undef c_tolower
! 277: #define c_tolower(c) \
! 278: ({ int __c = (c); \
! 279: (__c >= 'A' && __c <= 'Z' ? __c - 'A' + 'a' : __c); \
! 280: })
! 281: #undef c_toupper
! 282: #define c_toupper(c) \
! 283: ({ int __c = (c); \
! 284: (__c >= 'a' && __c <= 'z' ? __c - 'a' + 'A' : __c); \
! 285: })
! 286: #endif
! 287:
! 288: #endif /* optimizing for speed */
! 289:
! 290:
! 291: #ifdef __cplusplus
! 292: }
! 293: #endif
! 294:
! 295: #endif /* C_CTYPE_H */
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