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author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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1 /* <ctype.h> replacement macros.
2
3 Copyright (C) 2000, 2001, 2002, 2003, 2004,
4 2005 Free Software Foundation, Inc.
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
20 not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
21 Boston, MA 02110-1301, USA. */
22
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 */
117
118 #include "ansidecl.h"
119 #include <safe-ctype.h>
120 #include <stdio.h> /* for EOF */
121
122 #if EOF != -1
123 #error "<safe-ctype.h> requires EOF == -1"
124 #endif
125
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. */
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 */
148
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 */
155
156 /* Are we ASCII? */
157 #if HOST_CHARSET == HOST_CHARSET_ASCII
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
250 # if HOST_CHARSET == HOST_CHARSET_EBCDIC
251 #error "FIXME: write tables for EBCDIC"
252 # else
253 #error "Unrecognized host character set"
254 # endif
255 #endif