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1 | /* | |
2 | * Copyright (c) 1998, 1999 Henry Spencer. All rights reserved. | |
3 | * | |
4 | * Development of this software was funded, in part, by Cray Research Inc., | |
5 | * UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics | |
6 | * Corporation, none of whom are responsible for the results. The author | |
7 | * thanks all of them. | |
8 | * | |
9 | * Redistribution and use in source and binary forms -- with or without | |
10 | * modification -- are permitted for any purpose, provided that | |
11 | * redistributions in source form retain this entire copyright notice and | |
12 | * indicate the origin and nature of any modifications. | |
13 | * | |
14 | * I'd appreciate being given credit for this package in the documentation | |
15 | * of software which uses it, but that is not a requirement. | |
16 | * | |
17 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, | |
18 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY | |
19 | * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL | |
20 | * HENRY SPENCER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
21 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; | |
23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | |
25 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF | |
26 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
27 | */ | |
28 | ||
29 | /* overrides for regguts.h definitions, if any */ | |
30 | /* regguts only includes standard headers if NULL is not defined, so do it | |
31 | * ourselves here */ | |
32 | #include <stdio.h> | |
33 | #include <stdlib.h> | |
34 | #include <ctype.h> | |
35 | #include <limits.h> | |
36 | #include <string.h> | |
37 | ||
38 | /* must include this after ctype.h inclusion for CodeWarrior/Mac */ | |
39 | #include "wx/wxchar.h" | |
40 | ||
41 | /* | |
42 | * Do not insert extras between the "begin" and "end" lines -- this | |
43 | * chunk is automatically extracted to be fitted into regex.h. | |
44 | */ | |
45 | /* --- begin --- */ | |
46 | /* ensure certain things don't sneak in from system headers */ | |
47 | #ifdef __REG_WIDE_T | |
48 | #undef __REG_WIDE_T | |
49 | #endif | |
50 | #ifdef __REG_WIDE_COMPILE | |
51 | #undef __REG_WIDE_COMPILE | |
52 | #endif | |
53 | #ifdef __REG_WIDE_EXEC | |
54 | #undef __REG_WIDE_EXEC | |
55 | #endif | |
56 | #ifdef __REG_REGOFF_T | |
57 | #undef __REG_REGOFF_T | |
58 | #endif | |
59 | #ifdef __REG_VOID_T | |
60 | #undef __REG_VOID_T | |
61 | #endif | |
62 | #ifdef __REG_CONST | |
63 | #undef __REG_CONST | |
64 | #endif | |
65 | #ifdef __REG_NOFRONT | |
66 | #undef __REG_NOFRONT | |
67 | #endif | |
68 | #ifdef __REG_NOCHAR | |
69 | #undef __REG_NOCHAR | |
70 | #endif | |
71 | #if wxUSE_UNICODE | |
72 | # define __REG_WIDE_T wxChar | |
73 | # define __REG_WIDE_COMPILE re_comp | |
74 | # define __REG_WIDE_EXEC re_exec | |
75 | # define __REG_NOCHAR /* don't want the char versions */ | |
76 | #endif | |
77 | #define __REG_NOFRONT /* don't want regcomp() and regexec() */ | |
78 | #define _ANSI_ARGS_(x) x | |
79 | /* --- end --- */ | |
80 | ||
81 | /* internal character type and related */ | |
82 | typedef wxChar chr; /* the type itself */ | |
83 | typedef int pchr; /* what it promotes to */ | |
84 | typedef unsigned uchr; /* unsigned type that will hold a chr */ | |
85 | typedef int celt; /* type to hold chr, MCCE number, or NOCELT */ | |
86 | #define NOCELT (-1) /* celt value which is not valid chr or MCCE */ | |
87 | #define UCHAR(c) ((unsigned char) (c)) | |
88 | #define CHR(c) (UCHAR(c)) /* turn char literal into chr literal */ | |
89 | #define DIGITVAL(c) ((c)-'0') /* turn chr digit into its value */ | |
90 | #if !wxUSE_UNICODE | |
91 | # define CHRBITS 8 /* bits in a chr; must not use sizeof */ | |
92 | # define CHR_MIN 0x00 /* smallest and largest chr; the value */ | |
93 | # define CHR_MAX 0xff /* CHR_MAX-CHR_MIN+1 should fit in uchr */ | |
94 | #elif SIZEOF_WCHAR_T == 4 | |
95 | # define CHRBITS 32 /* bits in a chr; must not use sizeof */ | |
96 | # define CHR_MIN 0x00000000 /* smallest and largest chr; the value */ | |
97 | # define CHR_MAX 0xffffffff /* CHR_MAX-CHR_MIN+1 should fit in uchr */ | |
98 | #else | |
99 | # define CHRBITS 16 /* bits in a chr; must not use sizeof */ | |
100 | # define CHR_MIN 0x0000 /* smallest and largest chr; the value */ | |
101 | # define CHR_MAX 0xffff /* CHR_MAX-CHR_MIN+1 should fit in uchr */ | |
102 | #endif | |
103 | ||
104 | /* | |
105 | * I'm using isalpha et al. instead of wxIsalpha since BCC 5.5's iswalpha | |
106 | * seems not to work on Windows 9x? Note that these are only used by the | |
107 | * lexer, and although they must work for wxChars, they need only return | |
108 | * true for characters within the ascii range. | |
109 | */ | |
110 | #define iscalnum(x) ((wxUChar)(x) < 128 && isalnum(x)) | |
111 | #define iscalpha(x) ((wxUChar)(x) < 128 && isalpha(x)) | |
112 | #define iscdigit(x) ((wxUChar)(x) < 128 && isdigit(x)) | |
113 | #define iscspace(x) ((wxUChar)(x) < 128 && isspace(x)) | |
114 | ||
115 | /* name the external functions */ | |
116 | #define compile re_comp | |
117 | #define exec re_exec | |
118 | ||
119 | /* enable/disable debugging code (by whether REG_DEBUG is defined or not) */ | |
120 | #if 0 /* no debug unless requested by makefile */ | |
121 | #define REG_DEBUG /* */ | |
122 | #endif | |
123 | ||
124 | /* and pick up the standard header */ | |
125 | #include "regex.h" |