/* Character handling in C locale. These functions work like the corresponding functions in , except that they have the C (POSIX) locale hardwired, whereas the functions' behaviour depends on the current locale set via setlocale. Copyright (C) 2000-2003, 2006 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This program 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 this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #ifndef C_CTYPE_H #define C_CTYPE_H #include #ifdef __cplusplus extern "C" { #endif /* The functions defined in this file assume the "C" locale and a character set without diacritics (ASCII-US or EBCDIC-US or something like that). Even if the "C" locale on a particular system is an extension of the ASCII character set (like on BeOS, where it is UTF-8, or on AmigaOS, where it is ISO-8859-1), the functions in this file recognize only the ASCII characters. */ /* Check whether the ASCII optimizations apply. */ /* ANSI C89 (and ISO C99 5.2.1.3 too) already guarantees that '0', '1', ..., '9' have consecutive integer values. */ #define C_CTYPE_CONSECUTIVE_DIGITS 1 #if ('A' <= 'Z') \ && ('A' + 1 == 'B') && ('B' + 1 == 'C') && ('C' + 1 == 'D') \ && ('D' + 1 == 'E') && ('E' + 1 == 'F') && ('F' + 1 == 'G') \ && ('G' + 1 == 'H') && ('H' + 1 == 'I') && ('I' + 1 == 'J') \ && ('J' + 1 == 'K') && ('K' + 1 == 'L') && ('L' + 1 == 'M') \ && ('M' + 1 == 'N') && ('N' + 1 == 'O') && ('O' + 1 == 'P') \ && ('P' + 1 == 'Q') && ('Q' + 1 == 'R') && ('R' + 1 == 'S') \ && ('S' + 1 == 'T') && ('T' + 1 == 'U') && ('U' + 1 == 'V') \ && ('V' + 1 == 'W') && ('W' + 1 == 'X') && ('X' + 1 == 'Y') \ && ('Y' + 1 == 'Z') #define C_CTYPE_CONSECUTIVE_UPPERCASE 1 #endif #if ('a' <= 'z') \ && ('a' + 1 == 'b') && ('b' + 1 == 'c') && ('c' + 1 == 'd') \ && ('d' + 1 == 'e') && ('e' + 1 == 'f') && ('f' + 1 == 'g') \ && ('g' + 1 == 'h') && ('h' + 1 == 'i') && ('i' + 1 == 'j') \ && ('j' + 1 == 'k') && ('k' + 1 == 'l') && ('l' + 1 == 'm') \ && ('m' + 1 == 'n') && ('n' + 1 == 'o') && ('o' + 1 == 'p') \ && ('p' + 1 == 'q') && ('q' + 1 == 'r') && ('r' + 1 == 's') \ && ('s' + 1 == 't') && ('t' + 1 == 'u') && ('u' + 1 == 'v') \ && ('v' + 1 == 'w') && ('w' + 1 == 'x') && ('x' + 1 == 'y') \ && ('y' + 1 == 'z') #define C_CTYPE_CONSECUTIVE_LOWERCASE 1 #endif #if (' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \ && ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \ && (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \ && ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \ && ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \ && ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \ && ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \ && ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \ && ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \ && ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \ && ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \ && ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \ && ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \ && ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \ && ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \ && ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \ && ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \ && ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \ && ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \ && ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \ && ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \ && ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \ && ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126) /* The character set is ASCII or one of its variants or extensions, not EBCDIC. Testing the value of '\n' and '\r' is not relevant. */ #define C_CTYPE_ASCII 1 #endif /* Function declarations. */ extern bool c_isascii (int c); /* not locale dependent */ extern bool c_isalnum (int c); extern bool c_isalpha (int c); extern bool c_isblank (int c); extern bool c_iscntrl (int c); extern bool c_isdigit (int c); extern bool c_islower (int c); extern bool c_isgraph (int c); extern bool c_isprint (int c); extern bool c_ispunct (int c); extern bool c_isspace (int c); extern bool c_isupper (int c); extern bool c_isxdigit (int c); extern int c_tolower (int c); extern int c_toupper (int c); #if defined __GNUC__ && defined __OPTIMIZE__ && !defined __OPTIMIZE_SIZE__ && !defined NO_C_CTYPE_MACROS /* ASCII optimizations. */ #undef c_isascii #define c_isascii(c) \ ({ int __c = (c); \ (__c >= 0x00 && __c <= 0x7f); \ }) #if C_CTYPE_CONSECUTIVE_DIGITS \ && C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE #if C_CTYPE_ASCII #undef c_isalnum #define c_isalnum(c) \ ({ int __c = (c); \ ((__c >= '0' && __c <= '9') \ || ((__c & ~0x20) >= 'A' && (__c & ~0x20) <= 'Z')); \ }) #else #undef c_isalnum #define c_isalnum(c) \ ({ int __c = (c); \ ((__c >= '0' && __c <= '9') \ || (__c >= 'A' && __c <= 'Z') \ || (__c >= 'a' && __c <= 'z')); \ }) #endif #endif #if C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE #if C_CTYPE_ASCII #undef c_isalpha #define c_isalpha(c) \ ({ int __c = (c); \ ((__c & ~0x20) >= 'A' && (__c & ~0x20) <= 'Z'); \ }) #else #undef c_isalpha #define c_isalpha(c) \ ({ int __c = (c); \ ((__c >= 'A' && __c <= 'Z') || (__c >= 'a' && __c <= 'z')); \ }) #endif #endif #undef c_isblank #define c_isblank(c) \ ({ int __c = (c); \ (__c == ' ' || __c == '\t'); \ }) #if C_CTYPE_ASCII #undef c_iscntrl #define c_iscntrl(c) \ ({ int __c = (c); \ ((__c & ~0x1f) == 0 || __c == 0x7f); \ }) #endif #if C_CTYPE_CONSECUTIVE_DIGITS #undef c_isdigit #define c_isdigit(c) \ ({ int __c = (c); \ (__c >= '0' && __c <= '9'); \ }) #endif #if C_CTYPE_CONSECUTIVE_LOWERCASE #undef c_islower #define c_islower(c) \ ({ int __c = (c); \ (__c >= 'a' && __c <= 'z'); \ }) #endif #if C_CTYPE_ASCII #undef c_isgraph #define c_isgraph(c) \ ({ int __c = (c); \ (__c >= '!' && __c <= '~'); \ }) #endif #if C_CTYPE_ASCII #undef c_isprint #define c_isprint(c) \ ({ int __c = (c); \ (__c >= ' ' && __c <= '~'); \ }) #endif #if C_CTYPE_ASCII #undef c_ispunct #define c_ispunct(c) \ ({ int _c = (c); \ (c_isgraph (_c) && ! c_isalnum (_c)); \ }) #endif #undef c_isspace #define c_isspace(c) \ ({ int __c = (c); \ (__c == ' ' || __c == '\t' \ || __c == '\n' || __c == '\v' || __c == '\f' || __c == '\r'); \ }) #if C_CTYPE_CONSECUTIVE_UPPERCASE #undef c_isupper #define c_isupper(c) \ ({ int __c = (c); \ (__c >= 'A' && __c <= 'Z'); \ }) #endif #if C_CTYPE_CONSECUTIVE_DIGITS \ && C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE #if C_CTYPE_ASCII #undef c_isxdigit #define c_isxdigit(c) \ ({ int __c = (c); \ ((__c >= '0' && __c <= '9') \ || ((__c & ~0x20) >= 'A' && (__c & ~0x20) <= 'F')); \ }) #else #undef c_isxdigit #define c_isxdigit(c) \ ({ int __c = (c); \ ((__c >= '0' && __c <= '9') \ || (__c >= 'A' && __c <= 'F') \ || (__c >= 'a' && __c <= 'f')); \ }) #endif #endif #if C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE #undef c_tolower #define c_tolower(c) \ ({ int __c = (c); \ (__c >= 'A' && __c <= 'Z' ? __c - 'A' + 'a' : __c); \ }) #undef c_toupper #define c_toupper(c) \ ({ int __c = (c); \ (__c >= 'a' && __c <= 'z' ? __c - 'a' + 'A' : __c); \ }) #endif #endif /* optimizing for speed */ #ifdef __cplusplus } #endif #endif /* C_CTYPE_H */