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4218
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1 /* Character handling in C locale. |
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2 |
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3 These functions work like the corresponding functions in <ctype.h>, |
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4 except that they have the C (POSIX) locale hardwired, whereas the |
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5 <ctype.h> functions' behaviour depends on the current locale set via |
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6 setlocale. |
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7 |
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8 Copyright (C) 2000-2003 Free Software Foundation, Inc. |
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9 |
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10 This program is free software; you can redistribute it and/or modify |
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11 it under the terms of the GNU General Public License as published by |
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12 the Free Software Foundation; either version 2 of the License, or |
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13 (at your option) any later version. |
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14 |
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15 This program is distributed in the hope that it will be useful, |
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16 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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18 GNU General Public License for more details. |
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19 |
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20 You should have received a copy of the GNU General Public License |
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21 along with this program; if not, write to the Free Software |
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22 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
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23 |
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24 #ifndef C_CTYPE_H |
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25 #define C_CTYPE_H |
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26 |
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27 #include <stdbool.h> |
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28 |
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29 |
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30 /* The functions defined in this file assume the "C" locale and a character |
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31 set without diacritics (ASCII-US or EBCDIC-US or something like that). |
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32 Even if the "C" locale on a particular system is an extension of the ASCII |
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33 character set (like on BeOS, where it is UTF-8, or on AmigaOS, where it |
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34 is ISO-8859-1), the functions in this file recognize only the ASCII |
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35 characters. */ |
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36 |
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37 |
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38 /* Check whether the ASCII optimizations apply. */ |
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39 |
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40 /* ANSI C89 (and ISO C99 5.2.1.3 too) already guarantees that |
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41 '0', '1', ..., '9' have consecutive integer values. */ |
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42 #define C_CTYPE_CONSECUTIVE_DIGITS 1 |
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43 |
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44 #if ('A' <= 'Z') \ |
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45 && ('A' + 1 == 'B') && ('B' + 1 == 'C') && ('C' + 1 == 'D') \ |
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46 && ('D' + 1 == 'E') && ('E' + 1 == 'F') && ('F' + 1 == 'G') \ |
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47 && ('G' + 1 == 'H') && ('H' + 1 == 'I') && ('I' + 1 == 'J') \ |
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48 && ('J' + 1 == 'K') && ('K' + 1 == 'L') && ('L' + 1 == 'M') \ |
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49 && ('M' + 1 == 'N') && ('N' + 1 == 'O') && ('O' + 1 == 'P') \ |
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50 && ('P' + 1 == 'Q') && ('Q' + 1 == 'R') && ('R' + 1 == 'S') \ |
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51 && ('S' + 1 == 'T') && ('T' + 1 == 'U') && ('U' + 1 == 'V') \ |
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52 && ('V' + 1 == 'W') && ('W' + 1 == 'X') && ('X' + 1 == 'Y') \ |
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53 && ('Y' + 1 == 'Z') |
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54 #define C_CTYPE_CONSECUTIVE_UPPERCASE 1 |
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55 #endif |
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56 |
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57 #if ('a' <= 'z') \ |
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58 && ('a' + 1 == 'b') && ('b' + 1 == 'c') && ('c' + 1 == 'd') \ |
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59 && ('d' + 1 == 'e') && ('e' + 1 == 'f') && ('f' + 1 == 'g') \ |
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60 && ('g' + 1 == 'h') && ('h' + 1 == 'i') && ('i' + 1 == 'j') \ |
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61 && ('j' + 1 == 'k') && ('k' + 1 == 'l') && ('l' + 1 == 'm') \ |
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62 && ('m' + 1 == 'n') && ('n' + 1 == 'o') && ('o' + 1 == 'p') \ |
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63 && ('p' + 1 == 'q') && ('q' + 1 == 'r') && ('r' + 1 == 's') \ |
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64 && ('s' + 1 == 't') && ('t' + 1 == 'u') && ('u' + 1 == 'v') \ |
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65 && ('v' + 1 == 'w') && ('w' + 1 == 'x') && ('x' + 1 == 'y') \ |
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66 && ('y' + 1 == 'z') |
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67 #define C_CTYPE_CONSECUTIVE_LOWERCASE 1 |
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68 #endif |
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69 |
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70 #if (' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \ |
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71 && ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \ |
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72 && (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \ |
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73 && ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \ |
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74 && ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \ |
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75 && ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \ |
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76 && ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \ |
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77 && ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \ |
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78 && ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \ |
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79 && ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \ |
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80 && ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \ |
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81 && ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \ |
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82 && ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \ |
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83 && ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \ |
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84 && ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \ |
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85 && ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \ |
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86 && ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \ |
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87 && ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \ |
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88 && ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \ |
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89 && ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \ |
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90 && ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \ |
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91 && ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \ |
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92 && ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126) |
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93 /* The character set is ASCII or one of its variants or extensions, not EBCDIC. |
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94 Testing the value of '\n' and '\r' is not relevant. */ |
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95 #define C_CTYPE_ASCII 1 |
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96 #endif |
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97 |
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98 |
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99 /* Function declarations. */ |
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100 |
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101 extern bool c_isascii (int c); /* not locale dependent */ |
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102 |
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103 extern bool c_isalnum (int c); |
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104 extern bool c_isalpha (int c); |
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105 extern bool c_isblank (int c); |
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106 extern bool c_iscntrl (int c); |
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107 extern bool c_isdigit (int c); |
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108 extern bool c_islower (int c); |
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109 extern bool c_isgraph (int c); |
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110 extern bool c_isprint (int c); |
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111 extern bool c_ispunct (int c); |
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112 extern bool c_isspace (int c); |
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113 extern bool c_isupper (int c); |
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114 extern bool c_isxdigit (int c); |
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115 |
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116 extern int c_tolower (int c); |
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117 extern int c_toupper (int c); |
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118 |
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119 |
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120 #if defined __GNUC__ && defined __OPTIMIZE__ && !defined __OPTIMIZE_SIZE__ |
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121 |
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122 /* ASCII optimizations. */ |
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123 |
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124 #define c_isascii(c) \ |
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125 ({ int __c = (c); \ |
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126 (__c >= 0x00 && __c <= 0x7f); \ |
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127 }) |
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128 |
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129 #if C_CTYPE_CONSECUTIVE_DIGITS \ |
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130 && C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE |
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131 #if C_CTYPE_ASCII |
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132 #define c_isalnum(c) \ |
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133 ({ int __c = (c); \ |
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134 ((__c >= '0' && __c <= '9') \ |
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135 || ((__c & ~0x20) >= 'A' && (__c & ~0x20) <= 'Z')); \ |
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136 }) |
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137 #else |
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138 #define c_isalnum(c) \ |
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139 ({ int __c = (c); \ |
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140 ((__c >= '0' && __c <= '9') \ |
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141 || (__c >= 'A' && __c <= 'Z') \ |
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142 || (__c >= 'a' && __c <= 'z')); \ |
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143 }) |
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144 #endif |
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145 #endif |
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146 |
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147 #if C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE |
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148 #if C_CTYPE_ASCII |
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149 #define c_isalpha(c) \ |
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150 ({ int __c = (c); \ |
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151 ((__c & ~0x20) >= 'A' && (__c & ~0x20) <= 'Z'); \ |
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152 }) |
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153 #else |
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154 #define c_isalpha(c) \ |
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155 ({ int __c = (c); \ |
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156 ((__c >= 'A' && __c <= 'Z') || (__c >= 'a' && __c <= 'z')); \ |
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157 }) |
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158 #endif |
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159 #endif |
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160 |
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161 #define c_isblank(c) \ |
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162 ({ int __c = (c); \ |
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163 (__c == ' ' || __c == '\t'); \ |
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164 }) |
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165 |
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166 #if C_CTYPE_ASCII |
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167 #define c_iscntrl(c) \ |
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168 ({ int __c = (c); \ |
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169 ((__c & ~0x1f) == 0 || __c == 0x7f); \ |
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170 }) |
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171 #endif |
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172 |
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173 #if C_CTYPE_CONSECUTIVE_DIGITS |
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174 #define c_isdigit(c) \ |
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175 ({ int __c = (c); \ |
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176 (__c >= '0' && __c <= '9'); \ |
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177 }) |
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178 #endif |
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179 |
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180 #if C_CTYPE_CONSECUTIVE_LOWERCASE |
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181 #define c_islower(c) \ |
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182 ({ int __c = (c); \ |
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183 (__c >= 'a' && __c <= 'z'); \ |
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184 }) |
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185 #endif |
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186 |
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187 #if C_CTYPE_ASCII |
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188 #define c_isgraph(c) \ |
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189 ({ int __c = (c); \ |
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190 (__c >= '!' && __c <= '~'); \ |
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191 }) |
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192 #endif |
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193 |
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194 #if C_CTYPE_ASCII |
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195 #define c_isprint(c) \ |
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196 ({ int __c = (c); \ |
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197 (__c >= ' ' && __c <= '~'); \ |
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198 }) |
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199 #endif |
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200 |
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201 #if C_CTYPE_ASCII |
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202 #define c_ispunct(c) \ |
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203 ({ int _c = (c); \ |
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204 (c_isgraph (_c) && ! c_isalnum (_c)); \ |
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205 }) |
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206 #endif |
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207 |
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208 #define c_isspace(c) \ |
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209 ({ int __c = (c); \ |
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210 (__c == ' ' || __c == '\t' \ |
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211 || __c == '\n' || __c == '\v' || __c == '\f' || __c == '\r'); \ |
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212 }) |
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213 |
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214 #if C_CTYPE_CONSECUTIVE_UPPERCASE |
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215 #define c_isupper(c) \ |
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216 ({ int __c = (c); \ |
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217 (__c >= 'A' && __c <= 'Z'); \ |
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218 }) |
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219 #endif |
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220 |
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221 #if C_CTYPE_CONSECUTIVE_DIGITS \ |
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222 && C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE |
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223 #if C_CTYPE_ASCII |
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224 #define c_isxdigit(c) \ |
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225 ({ int __c = (c); \ |
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226 ((__c >= '0' && __c <= '9') \ |
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227 || ((__c & ~0x20) >= 'A' && (__c & ~0x20) <= 'F')); \ |
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228 }) |
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229 #else |
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230 #define c_isxdigit(c) \ |
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231 ({ int __c = (c); \ |
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232 ((__c >= '0' && __c <= '9') \ |
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233 || (__c >= 'A' && __c <= 'F') \ |
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234 || (__c >= 'a' && __c <= 'f')); \ |
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235 }) |
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236 #endif |
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237 #endif |
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238 |
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239 #if C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE |
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240 #define c_tolower(c) \ |
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241 ({ int __c = (c); \ |
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242 (__c >= 'A' && __c <= 'Z' ? __c - 'A' + 'a' : __c); \ |
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243 }) |
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244 #define c_toupper(c) \ |
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245 ({ int __c = (c); \ |
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246 (__c >= 'a' && __c <= 'z' ? __c - 'a' + 'A' : __c); \ |
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247 }) |
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248 #endif |
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249 |
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250 #endif /* optimizing for speed */ |
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251 |
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252 #endif /* C_CTYPE_H */ |
