| /* Character handling in C locale. |
| |
| These functions work like the corresponding functions in <ctype.h>, |
| except that they have the C (POSIX) locale hardwired, whereas the |
| <ctype.h> functions' behaviour depends on the current locale set via |
| setlocale. |
| |
| Copyright (C) 2000-2003, 2006, 2008-2012 Free Software Foundation, Inc. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 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 General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, see <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef C_CTYPE_H |
| #define C_CTYPE_H |
| |
| #include <stdbool.h> |
| |
| |
| #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. */ |
| |
| /* Unlike the functions in <ctype.h>, which require an argument in the range |
| of the 'unsigned char' type, the functions here operate on values that are |
| in the 'unsigned char' range or in the 'char' range. In other words, |
| when you have a 'char' value, you need to cast it before using it as |
| argument to a <ctype.h> function: |
| |
| const char *s = ...; |
| if (isalpha ((unsigned char) *s)) ... |
| |
| but you don't need to cast it for the functions defined in this file: |
| |
| const char *s = ...; |
| if (c_isalpha (*s)) ... |
| */ |
| |
| extern bool c_isascii (int c) _GL_ATTRIBUTE_CONST; /* not locale dependent */ |
| |
| extern bool c_isalnum (int c) _GL_ATTRIBUTE_CONST; |
| extern bool c_isalpha (int c) _GL_ATTRIBUTE_CONST; |
| extern bool c_isblank (int c) _GL_ATTRIBUTE_CONST; |
| extern bool c_iscntrl (int c) _GL_ATTRIBUTE_CONST; |
| extern bool c_isdigit (int c) _GL_ATTRIBUTE_CONST; |
| extern bool c_islower (int c) _GL_ATTRIBUTE_CONST; |
| extern bool c_isgraph (int c) _GL_ATTRIBUTE_CONST; |
| extern bool c_isprint (int c) _GL_ATTRIBUTE_CONST; |
| extern bool c_ispunct (int c) _GL_ATTRIBUTE_CONST; |
| extern bool c_isspace (int c) _GL_ATTRIBUTE_CONST; |
| extern bool c_isupper (int c) _GL_ATTRIBUTE_CONST; |
| extern bool c_isxdigit (int c) _GL_ATTRIBUTE_CONST; |
| |
| extern int c_tolower (int c) _GL_ATTRIBUTE_CONST; |
| extern int c_toupper (int c) _GL_ATTRIBUTE_CONST; |
| |
| |
| #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 */ |