| 1 | /* <ctype.h> replacement macros. |
| 2 | |
| 3 | Copyright (C) 2000-2019 Free Software Foundation, Inc. |
| 4 | Contributed by Zack Weinberg <zackw@stanford.edu>. |
| 5 | |
| 6 | This file is part of the libiberty library. |
| 7 | Libiberty is free software; you can redistribute it and/or |
| 8 | modify it under the terms of the GNU Library General Public |
| 9 | License as published by the Free Software Foundation; either |
| 10 | version 2 of the License, or (at your option) any later version. |
| 11 | |
| 12 | Libiberty is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | Library General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU Library General Public |
| 18 | License along with libiberty; see the file COPYING.LIB. If |
| 19 | not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, |
| 20 | Boston, MA 02110-1301, USA. */ |
| 21 | |
| 22 | /* |
| 23 | |
| 24 | @defvr Extension HOST_CHARSET |
| 25 | This macro indicates the basic character set and encoding used by the |
| 26 | host: more precisely, the encoding used for character constants in |
| 27 | preprocessor @samp{#if} statements (the C "execution character set"). |
| 28 | It is defined by @file{safe-ctype.h}, and will be an integer constant |
| 29 | with one of the following values: |
| 30 | |
| 31 | @ftable @code |
| 32 | @item HOST_CHARSET_UNKNOWN |
| 33 | The host character set is unknown - that is, not one of the next two |
| 34 | possibilities. |
| 35 | |
| 36 | @item HOST_CHARSET_ASCII |
| 37 | The host character set is ASCII. |
| 38 | |
| 39 | @item HOST_CHARSET_EBCDIC |
| 40 | The host character set is some variant of EBCDIC. (Only one of the |
| 41 | nineteen EBCDIC varying characters is tested; exercise caution.) |
| 42 | @end ftable |
| 43 | @end defvr |
| 44 | |
| 45 | @deffn Extension ISALPHA (@var{c}) |
| 46 | @deffnx Extension ISALNUM (@var{c}) |
| 47 | @deffnx Extension ISBLANK (@var{c}) |
| 48 | @deffnx Extension ISCNTRL (@var{c}) |
| 49 | @deffnx Extension ISDIGIT (@var{c}) |
| 50 | @deffnx Extension ISGRAPH (@var{c}) |
| 51 | @deffnx Extension ISLOWER (@var{c}) |
| 52 | @deffnx Extension ISPRINT (@var{c}) |
| 53 | @deffnx Extension ISPUNCT (@var{c}) |
| 54 | @deffnx Extension ISSPACE (@var{c}) |
| 55 | @deffnx Extension ISUPPER (@var{c}) |
| 56 | @deffnx Extension ISXDIGIT (@var{c}) |
| 57 | |
| 58 | These twelve macros are defined by @file{safe-ctype.h}. Each has the |
| 59 | same meaning as the corresponding macro (with name in lowercase) |
| 60 | defined by the standard header @file{ctype.h}. For example, |
| 61 | @code{ISALPHA} returns true for alphabetic characters and false for |
| 62 | others. However, there are two differences between these macros and |
| 63 | those provided by @file{ctype.h}: |
| 64 | |
| 65 | @itemize @bullet |
| 66 | @item These macros are guaranteed to have well-defined behavior for all |
| 67 | values representable by @code{signed char} and @code{unsigned char}, and |
| 68 | for @code{EOF}. |
| 69 | |
| 70 | @item These macros ignore the current locale; they are true for these |
| 71 | fixed sets of characters: |
| 72 | @multitable {@code{XDIGIT}} {yada yada yada yada yada yada yada yada} |
| 73 | @item @code{ALPHA} @tab @kbd{A-Za-z} |
| 74 | @item @code{ALNUM} @tab @kbd{A-Za-z0-9} |
| 75 | @item @code{BLANK} @tab @kbd{space tab} |
| 76 | @item @code{CNTRL} @tab @code{!PRINT} |
| 77 | @item @code{DIGIT} @tab @kbd{0-9} |
| 78 | @item @code{GRAPH} @tab @code{ALNUM || PUNCT} |
| 79 | @item @code{LOWER} @tab @kbd{a-z} |
| 80 | @item @code{PRINT} @tab @code{GRAPH ||} @kbd{space} |
| 81 | @item @code{PUNCT} @tab @kbd{`~!@@#$%^&*()_-=+[@{]@}\|;:'",<.>/?} |
| 82 | @item @code{SPACE} @tab @kbd{space tab \n \r \f \v} |
| 83 | @item @code{UPPER} @tab @kbd{A-Z} |
| 84 | @item @code{XDIGIT} @tab @kbd{0-9A-Fa-f} |
| 85 | @end multitable |
| 86 | |
| 87 | Note that, if the host character set is ASCII or a superset thereof, |
| 88 | all these macros will return false for all values of @code{char} outside |
| 89 | the range of 7-bit ASCII. In particular, both ISPRINT and ISCNTRL return |
| 90 | false for characters with numeric values from 128 to 255. |
| 91 | @end itemize |
| 92 | @end deffn |
| 93 | |
| 94 | @deffn Extension ISIDNUM (@var{c}) |
| 95 | @deffnx Extension ISIDST (@var{c}) |
| 96 | @deffnx Extension IS_VSPACE (@var{c}) |
| 97 | @deffnx Extension IS_NVSPACE (@var{c}) |
| 98 | @deffnx Extension IS_SPACE_OR_NUL (@var{c}) |
| 99 | @deffnx Extension IS_ISOBASIC (@var{c}) |
| 100 | These six macros are defined by @file{safe-ctype.h} and provide |
| 101 | additional character classes which are useful when doing lexical |
| 102 | analysis of C or similar languages. They are true for the following |
| 103 | sets of characters: |
| 104 | |
| 105 | @multitable {@code{SPACE_OR_NUL}} {yada yada yada yada yada yada yada yada} |
| 106 | @item @code{IDNUM} @tab @kbd{A-Za-z0-9_} |
| 107 | @item @code{IDST} @tab @kbd{A-Za-z_} |
| 108 | @item @code{VSPACE} @tab @kbd{\r \n} |
| 109 | @item @code{NVSPACE} @tab @kbd{space tab \f \v \0} |
| 110 | @item @code{SPACE_OR_NUL} @tab @code{VSPACE || NVSPACE} |
| 111 | @item @code{ISOBASIC} @tab @code{VSPACE || NVSPACE || PRINT} |
| 112 | @end multitable |
| 113 | @end deffn |
| 114 | |
| 115 | */ |
| 116 | |
| 117 | #include "ansidecl.h" |
| 118 | #include <safe-ctype.h> |
| 119 | #include <stdio.h> /* for EOF */ |
| 120 | |
| 121 | #if EOF != -1 |
| 122 | #error "<safe-ctype.h> requires EOF == -1" |
| 123 | #endif |
| 124 | |
| 125 | /* Shorthand */ |
| 126 | #define bl _sch_isblank |
| 127 | #define cn _sch_iscntrl |
| 128 | #define di _sch_isdigit |
| 129 | #define is _sch_isidst |
| 130 | #define lo _sch_islower |
| 131 | #define nv _sch_isnvsp |
| 132 | #define pn _sch_ispunct |
| 133 | #define pr _sch_isprint |
| 134 | #define sp _sch_isspace |
| 135 | #define up _sch_isupper |
| 136 | #define vs _sch_isvsp |
| 137 | #define xd _sch_isxdigit |
| 138 | |
| 139 | /* Masks. */ |
| 140 | #define L (const unsigned short) (lo|is |pr) /* lower case letter */ |
| 141 | #define XL (const unsigned short) (lo|is|xd|pr) /* lowercase hex digit */ |
| 142 | #define U (const unsigned short) (up|is |pr) /* upper case letter */ |
| 143 | #define XU (const unsigned short) (up|is|xd|pr) /* uppercase hex digit */ |
| 144 | #define D (const unsigned short) (di |xd|pr) /* decimal digit */ |
| 145 | #define P (const unsigned short) (pn |pr) /* punctuation */ |
| 146 | #define _ (const unsigned short) (pn|is |pr) /* underscore */ |
| 147 | |
| 148 | #define C (const unsigned short) ( cn) /* control character */ |
| 149 | #define Z (const unsigned short) (nv |cn) /* NUL */ |
| 150 | #define M (const unsigned short) (nv|sp |cn) /* cursor movement: \f \v */ |
| 151 | #define V (const unsigned short) (vs|sp |cn) /* vertical space: \r \n */ |
| 152 | #define T (const unsigned short) (nv|sp|bl|cn) /* tab */ |
| 153 | #define S (const unsigned short) (nv|sp|bl|pr) /* space */ |
| 154 | |
| 155 | /* Are we ASCII? */ |
| 156 | #if HOST_CHARSET == HOST_CHARSET_ASCII |
| 157 | |
| 158 | const unsigned short _sch_istable[256] = |
| 159 | { |
| 160 | Z, C, C, C, C, C, C, C, /* NUL SOH STX ETX EOT ENQ ACK BEL */ |
| 161 | C, T, V, M, M, V, C, C, /* BS HT LF VT FF CR SO SI */ |
| 162 | C, C, C, C, C, C, C, C, /* DLE DC1 DC2 DC3 DC4 NAK SYN ETB */ |
| 163 | C, C, C, C, C, C, C, C, /* CAN EM SUB ESC FS GS RS US */ |
| 164 | S, P, P, P, P, P, P, P, /* SP ! " # $ % & ' */ |
| 165 | P, P, P, P, P, P, P, P, /* ( ) * + , - . / */ |
| 166 | D, D, D, D, D, D, D, D, /* 0 1 2 3 4 5 6 7 */ |
| 167 | D, D, P, P, P, P, P, P, /* 8 9 : ; < = > ? */ |
| 168 | P, XU, XU, XU, XU, XU, XU, U, /* @ A B C D E F G */ |
| 169 | U, U, U, U, U, U, U, U, /* H I J K L M N O */ |
| 170 | U, U, U, U, U, U, U, U, /* P Q R S T U V W */ |
| 171 | U, U, U, P, P, P, P, _, /* X Y Z [ \ ] ^ _ */ |
| 172 | P, XL, XL, XL, XL, XL, XL, L, /* ` a b c d e f g */ |
| 173 | L, L, L, L, L, L, L, L, /* h i j k l m n o */ |
| 174 | L, L, L, L, L, L, L, L, /* p q r s t u v w */ |
| 175 | L, L, L, P, P, P, P, C, /* x y z { | } ~ DEL */ |
| 176 | |
| 177 | /* high half of unsigned char is locale-specific, so all tests are |
| 178 | false in "C" locale */ |
| 179 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 180 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 181 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 182 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 183 | |
| 184 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 185 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 186 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 187 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 188 | }; |
| 189 | |
| 190 | const unsigned char _sch_tolower[256] = |
| 191 | { |
| 192 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
| 193 | 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, |
| 194 | 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, |
| 195 | 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, |
| 196 | 64, |
| 197 | |
| 198 | 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', |
| 199 | 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', |
| 200 | |
| 201 | 91, 92, 93, 94, 95, 96, |
| 202 | |
| 203 | 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', |
| 204 | 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', |
| 205 | |
| 206 | 123,124,125,126,127, |
| 207 | |
| 208 | 128,129,130,131, 132,133,134,135, 136,137,138,139, 140,141,142,143, |
| 209 | 144,145,146,147, 148,149,150,151, 152,153,154,155, 156,157,158,159, |
| 210 | 160,161,162,163, 164,165,166,167, 168,169,170,171, 172,173,174,175, |
| 211 | 176,177,178,179, 180,181,182,183, 184,185,186,187, 188,189,190,191, |
| 212 | |
| 213 | 192,193,194,195, 196,197,198,199, 200,201,202,203, 204,205,206,207, |
| 214 | 208,209,210,211, 212,213,214,215, 216,217,218,219, 220,221,222,223, |
| 215 | 224,225,226,227, 228,229,230,231, 232,233,234,235, 236,237,238,239, |
| 216 | 240,241,242,243, 244,245,246,247, 248,249,250,251, 252,253,254,255, |
| 217 | }; |
| 218 | |
| 219 | const unsigned char _sch_toupper[256] = |
| 220 | { |
| 221 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
| 222 | 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, |
| 223 | 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, |
| 224 | 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, |
| 225 | 64, |
| 226 | |
| 227 | 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', |
| 228 | 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', |
| 229 | |
| 230 | 91, 92, 93, 94, 95, 96, |
| 231 | |
| 232 | 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', |
| 233 | 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', |
| 234 | |
| 235 | 123,124,125,126,127, |
| 236 | |
| 237 | 128,129,130,131, 132,133,134,135, 136,137,138,139, 140,141,142,143, |
| 238 | 144,145,146,147, 148,149,150,151, 152,153,154,155, 156,157,158,159, |
| 239 | 160,161,162,163, 164,165,166,167, 168,169,170,171, 172,173,174,175, |
| 240 | 176,177,178,179, 180,181,182,183, 184,185,186,187, 188,189,190,191, |
| 241 | |
| 242 | 192,193,194,195, 196,197,198,199, 200,201,202,203, 204,205,206,207, |
| 243 | 208,209,210,211, 212,213,214,215, 216,217,218,219, 220,221,222,223, |
| 244 | 224,225,226,227, 228,229,230,231, 232,233,234,235, 236,237,238,239, |
| 245 | 240,241,242,243, 244,245,246,247, 248,249,250,251, 252,253,254,255, |
| 246 | }; |
| 247 | |
| 248 | #else |
| 249 | # if HOST_CHARSET == HOST_CHARSET_EBCDIC |
| 250 | #error "FIXME: write tables for EBCDIC" |
| 251 | # else |
| 252 | #error "Unrecognized host character set" |
| 253 | # endif |
| 254 | #endif |