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ac424eb3 DD |
1 | /* <ctype.h> replacement macros. |
2 | ||
1e45deed DD |
3 | Copyright (C) 2000, 2001, 2002, 2003, 2004, |
4 | 2005 Free Software Foundation, Inc. | |
ac424eb3 DD |
5 | Contributed by Zack Weinberg <zackw@stanford.edu>. |
6 | ||
7 | This file is part of the libiberty library. | |
8 | Libiberty is free software; you can redistribute it and/or | |
9 | modify it under the terms of the GNU Library General Public | |
10 | License as published by the Free Software Foundation; either | |
11 | version 2 of the License, or (at your option) any later version. | |
12 | ||
13 | Libiberty is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Library General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Library General Public | |
19 | License along with libiberty; see the file COPYING.LIB. If | |
979c05d3 NC |
20 | not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
ac424eb3 | 22 | |
70ecf948 DD |
23 | /* |
24 | ||
25 | @defvr Extension HOST_CHARSET | |
26 | This macro indicates the basic character set and encoding used by the | |
27 | host: more precisely, the encoding used for character constants in | |
28 | preprocessor @samp{#if} statements (the C "execution character set"). | |
29 | It is defined by @file{safe-ctype.h}, and will be an integer constant | |
30 | with one of the following values: | |
31 | ||
32 | @ftable @code | |
33 | @item HOST_CHARSET_UNKNOWN | |
34 | The host character set is unknown - that is, not one of the next two | |
35 | possibilities. | |
36 | ||
37 | @item HOST_CHARSET_ASCII | |
38 | The host character set is ASCII. | |
39 | ||
40 | @item HOST_CHARSET_EBCDIC | |
41 | The host character set is some variant of EBCDIC. (Only one of the | |
42 | nineteen EBCDIC varying characters is tested; exercise caution.) | |
43 | @end ftable | |
44 | @end defvr | |
45 | ||
46 | @deffn Extension ISALPHA (@var{c}) | |
47 | @deffnx Extension ISALNUM (@var{c}) | |
48 | @deffnx Extension ISBLANK (@var{c}) | |
49 | @deffnx Extension ISCNTRL (@var{c}) | |
50 | @deffnx Extension ISDIGIT (@var{c}) | |
51 | @deffnx Extension ISGRAPH (@var{c}) | |
52 | @deffnx Extension ISLOWER (@var{c}) | |
53 | @deffnx Extension ISPRINT (@var{c}) | |
54 | @deffnx Extension ISPUNCT (@var{c}) | |
55 | @deffnx Extension ISSPACE (@var{c}) | |
56 | @deffnx Extension ISUPPER (@var{c}) | |
57 | @deffnx Extension ISXDIGIT (@var{c}) | |
58 | ||
59 | These twelve macros are defined by @file{safe-ctype.h}. Each has the | |
60 | same meaning as the corresponding macro (with name in lowercase) | |
61 | defined by the standard header @file{ctype.h}. For example, | |
62 | @code{ISALPHA} returns true for alphabetic characters and false for | |
63 | others. However, there are two differences between these macros and | |
64 | those provided by @file{ctype.h}: | |
65 | ||
66 | @itemize @bullet | |
67 | @item These macros are guaranteed to have well-defined behavior for all | |
68 | values representable by @code{signed char} and @code{unsigned char}, and | |
69 | for @code{EOF}. | |
70 | ||
71 | @item These macros ignore the current locale; they are true for these | |
72 | fixed sets of characters: | |
73 | @multitable {@code{XDIGIT}} {yada yada yada yada yada yada yada yada} | |
74 | @item @code{ALPHA} @tab @kbd{A-Za-z} | |
75 | @item @code{ALNUM} @tab @kbd{A-Za-z0-9} | |
76 | @item @code{BLANK} @tab @kbd{space tab} | |
77 | @item @code{CNTRL} @tab @code{!PRINT} | |
78 | @item @code{DIGIT} @tab @kbd{0-9} | |
79 | @item @code{GRAPH} @tab @code{ALNUM || PUNCT} | |
80 | @item @code{LOWER} @tab @kbd{a-z} | |
81 | @item @code{PRINT} @tab @code{GRAPH ||} @kbd{space} | |
82 | @item @code{PUNCT} @tab @kbd{`~!@@#$%^&*()_-=+[@{]@}\|;:'",<.>/?} | |
83 | @item @code{SPACE} @tab @kbd{space tab \n \r \f \v} | |
84 | @item @code{UPPER} @tab @kbd{A-Z} | |
85 | @item @code{XDIGIT} @tab @kbd{0-9A-Fa-f} | |
86 | @end multitable | |
87 | ||
88 | Note that, if the host character set is ASCII or a superset thereof, | |
89 | all these macros will return false for all values of @code{char} outside | |
90 | the range of 7-bit ASCII. In particular, both ISPRINT and ISCNTRL return | |
91 | false for characters with numeric values from 128 to 255. | |
92 | @end itemize | |
93 | @end deffn | |
94 | ||
95 | @deffn Extension ISIDNUM (@var{c}) | |
96 | @deffnx Extension ISIDST (@var{c}) | |
97 | @deffnx Extension IS_VSPACE (@var{c}) | |
98 | @deffnx Extension IS_NVSPACE (@var{c}) | |
99 | @deffnx Extension IS_SPACE_OR_NUL (@var{c}) | |
100 | @deffnx Extension IS_ISOBASIC (@var{c}) | |
101 | These six macros are defined by @file{safe-ctype.h} and provide | |
102 | additional character classes which are useful when doing lexical | |
103 | analysis of C or similar languages. They are true for the following | |
104 | sets of characters: | |
105 | ||
106 | @multitable {@code{SPACE_OR_NUL}} {yada yada yada yada yada yada yada yada} | |
107 | @item @code{IDNUM} @tab @kbd{A-Za-z0-9_} | |
108 | @item @code{IDST} @tab @kbd{A-Za-z_} | |
109 | @item @code{VSPACE} @tab @kbd{\r \n} | |
110 | @item @code{NVSPACE} @tab @kbd{space tab \f \v \0} | |
111 | @item @code{SPACE_OR_NUL} @tab @code{VSPACE || NVSPACE} | |
112 | @item @code{ISOBASIC} @tab @code{VSPACE || NVSPACE || PRINT} | |
113 | @end multitable | |
114 | @end deffn | |
115 | ||
116 | */ | |
ac424eb3 | 117 | |
f021637a | 118 | #include "ansidecl.h" |
ac424eb3 DD |
119 | #include <safe-ctype.h> |
120 | #include <stdio.h> /* for EOF */ | |
121 | ||
cbc0188b DD |
122 | #if EOF != -1 |
123 | #error "<safe-ctype.h> requires EOF == -1" | |
124 | #endif | |
125 | ||
ac424eb3 DD |
126 | /* Shorthand */ |
127 | #define bl _sch_isblank | |
128 | #define cn _sch_iscntrl | |
129 | #define di _sch_isdigit | |
130 | #define is _sch_isidst | |
131 | #define lo _sch_islower | |
132 | #define nv _sch_isnvsp | |
133 | #define pn _sch_ispunct | |
134 | #define pr _sch_isprint | |
135 | #define sp _sch_isspace | |
136 | #define up _sch_isupper | |
137 | #define vs _sch_isvsp | |
138 | #define xd _sch_isxdigit | |
139 | ||
140 | /* Masks. */ | |
585cc78f DD |
141 | #define L (const unsigned short) (lo|is |pr) /* lower case letter */ |
142 | #define XL (const unsigned short) (lo|is|xd|pr) /* lowercase hex digit */ | |
143 | #define U (const unsigned short) (up|is |pr) /* upper case letter */ | |
144 | #define XU (const unsigned short) (up|is|xd|pr) /* uppercase hex digit */ | |
145 | #define D (const unsigned short) (di |xd|pr) /* decimal digit */ | |
146 | #define P (const unsigned short) (pn |pr) /* punctuation */ | |
147 | #define _ (const unsigned short) (pn|is |pr) /* underscore */ | |
ac424eb3 | 148 | |
585cc78f DD |
149 | #define C (const unsigned short) ( cn) /* control character */ |
150 | #define Z (const unsigned short) (nv |cn) /* NUL */ | |
151 | #define M (const unsigned short) (nv|sp |cn) /* cursor movement: \f \v */ | |
152 | #define V (const unsigned short) (vs|sp |cn) /* vertical space: \r \n */ | |
153 | #define T (const unsigned short) (nv|sp|bl|cn) /* tab */ | |
154 | #define S (const unsigned short) (nv|sp|bl|pr) /* space */ | |
ac424eb3 DD |
155 | |
156 | /* Are we ASCII? */ | |
70ecf948 | 157 | #if HOST_CHARSET == HOST_CHARSET_ASCII |
ac424eb3 DD |
158 | |
159 | const unsigned short _sch_istable[256] = | |
160 | { | |
161 | Z, C, C, C, C, C, C, C, /* NUL SOH STX ETX EOT ENQ ACK BEL */ | |
162 | C, T, V, M, M, V, C, C, /* BS HT LF VT FF CR SO SI */ | |
163 | C, C, C, C, C, C, C, C, /* DLE DC1 DC2 DC3 DC4 NAK SYN ETB */ | |
164 | C, C, C, C, C, C, C, C, /* CAN EM SUB ESC FS GS RS US */ | |
165 | S, P, P, P, P, P, P, P, /* SP ! " # $ % & ' */ | |
166 | P, P, P, P, P, P, P, P, /* ( ) * + , - . / */ | |
167 | D, D, D, D, D, D, D, D, /* 0 1 2 3 4 5 6 7 */ | |
168 | D, D, P, P, P, P, P, P, /* 8 9 : ; < = > ? */ | |
169 | P, XU, XU, XU, XU, XU, XU, U, /* @ A B C D E F G */ | |
170 | U, U, U, U, U, U, U, U, /* H I J K L M N O */ | |
171 | U, U, U, U, U, U, U, U, /* P Q R S T U V W */ | |
172 | U, U, U, P, P, P, P, _, /* X Y Z [ \ ] ^ _ */ | |
173 | P, XL, XL, XL, XL, XL, XL, L, /* ` a b c d e f g */ | |
174 | L, L, L, L, L, L, L, L, /* h i j k l m n o */ | |
175 | L, L, L, L, L, L, L, L, /* p q r s t u v w */ | |
176 | L, L, L, P, P, P, P, C, /* x y z { | } ~ DEL */ | |
177 | ||
178 | /* high half of unsigned char is locale-specific, so all tests are | |
179 | false in "C" locale */ | |
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 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
184 | ||
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 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
189 | }; | |
190 | ||
191 | const unsigned char _sch_tolower[256] = | |
192 | { | |
193 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, | |
194 | 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, | |
195 | 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, | |
196 | 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, | |
197 | 64, | |
198 | ||
199 | 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', | |
200 | 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', | |
201 | ||
202 | 91, 92, 93, 94, 95, 96, | |
203 | ||
204 | 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', | |
205 | 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', | |
206 | ||
207 | 123,124,125,126,127, | |
208 | ||
209 | 128,129,130,131, 132,133,134,135, 136,137,138,139, 140,141,142,143, | |
210 | 144,145,146,147, 148,149,150,151, 152,153,154,155, 156,157,158,159, | |
211 | 160,161,162,163, 164,165,166,167, 168,169,170,171, 172,173,174,175, | |
212 | 176,177,178,179, 180,181,182,183, 184,185,186,187, 188,189,190,191, | |
213 | ||
214 | 192,193,194,195, 196,197,198,199, 200,201,202,203, 204,205,206,207, | |
215 | 208,209,210,211, 212,213,214,215, 216,217,218,219, 220,221,222,223, | |
216 | 224,225,226,227, 228,229,230,231, 232,233,234,235, 236,237,238,239, | |
217 | 240,241,242,243, 244,245,246,247, 248,249,250,251, 252,253,254,255, | |
218 | }; | |
219 | ||
220 | const unsigned char _sch_toupper[256] = | |
221 | { | |
222 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, | |
223 | 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, | |
224 | 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, | |
225 | 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, | |
226 | 64, | |
227 | ||
228 | 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', | |
229 | 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', | |
230 | ||
231 | 91, 92, 93, 94, 95, 96, | |
232 | ||
233 | 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', | |
234 | 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', | |
235 | ||
236 | 123,124,125,126,127, | |
237 | ||
238 | 128,129,130,131, 132,133,134,135, 136,137,138,139, 140,141,142,143, | |
239 | 144,145,146,147, 148,149,150,151, 152,153,154,155, 156,157,158,159, | |
240 | 160,161,162,163, 164,165,166,167, 168,169,170,171, 172,173,174,175, | |
241 | 176,177,178,179, 180,181,182,183, 184,185,186,187, 188,189,190,191, | |
242 | ||
243 | 192,193,194,195, 196,197,198,199, 200,201,202,203, 204,205,206,207, | |
244 | 208,209,210,211, 212,213,214,215, 216,217,218,219, 220,221,222,223, | |
245 | 224,225,226,227, 228,229,230,231, 232,233,234,235, 236,237,238,239, | |
246 | 240,241,242,243, 244,245,246,247, 248,249,250,251, 252,253,254,255, | |
247 | }; | |
248 | ||
249 | #else | |
70ecf948 | 250 | # if HOST_CHARSET == HOST_CHARSET_EBCDIC |
cbc0188b DD |
251 | #error "FIXME: write tables for EBCDIC" |
252 | # else | |
253 | #error "Unrecognized host character set" | |
254 | # endif | |
255 | #endif |