| 1 |
/*************************************************
|
| 2 |
* Perl-Compatible Regular Expressions *
|
| 3 |
*************************************************/
|
| 4 |
|
| 5 |
/*
|
| 6 |
PCRE is a library of functions to support regular expressions whose syntax
|
| 7 |
and semantics are as close as possible to those of the Perl 5 language.
|
| 8 |
|
| 9 |
Written by: Philip Hazel <ph10@cam.ac.uk>
|
| 10 |
|
| 11 |
Copyright (c) 1997 University of Cambridge
|
| 12 |
|
| 13 |
-----------------------------------------------------------------------------
|
| 14 |
Permission is granted to anyone to use this software for any purpose on any
|
| 15 |
computer system, and to redistribute it freely, subject to the following
|
| 16 |
restrictions:
|
| 17 |
|
| 18 |
1. This software is distributed in the hope that it will be useful,
|
| 19 |
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 20 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
| 21 |
|
| 22 |
2. The origin of this software must not be misrepresented, either by
|
| 23 |
explicit claim or by omission.
|
| 24 |
|
| 25 |
3. Altered versions must be plainly marked as such, and must not be
|
| 26 |
misrepresented as being the original software.
|
| 27 |
-----------------------------------------------------------------------------
|
| 28 |
|
| 29 |
See the file Tech.Notes for some information on the internals.
|
| 30 |
*/
|
| 31 |
|
| 32 |
|
| 33 |
/* This is a support program to generate the file chartables.c, containing
|
| 34 |
character tables of various kinds. They are built according to the local C
|
| 35 |
locale. */
|
| 36 |
|
| 37 |
#include <ctype.h>
|
| 38 |
#include <stdio.h>
|
| 39 |
#include <string.h>
|
| 40 |
|
| 41 |
#include "internal.h"
|
| 42 |
|
| 43 |
int main(void)
|
| 44 |
{
|
| 45 |
int i;
|
| 46 |
unsigned char cbits[cbit_length];
|
| 47 |
|
| 48 |
printf(
|
| 49 |
"/*************************************************\n"
|
| 50 |
"* Perl-Compatible Regular Expressions *\n"
|
| 51 |
"*************************************************/\n\n"
|
| 52 |
"/* This file is automatically written by the makechartables auxiliary \n"
|
| 53 |
"program. If you edit it by hand, you might like to edit the Makefile to \n"
|
| 54 |
"prevent its ever being regenerated. */\n\n"
|
| 55 |
"/* This table is a lower casing table. */\n\n"
|
| 56 |
"unsigned char pcre_lcc[] = {\n");
|
| 57 |
|
| 58 |
printf(" ");
|
| 59 |
for (i = 0; i < 256; i++)
|
| 60 |
{
|
| 61 |
if ((i & 7) == 0 && i != 0) printf("\n ");
|
| 62 |
printf("%3d", tolower(i));
|
| 63 |
if (i != 255) printf(",");
|
| 64 |
}
|
| 65 |
printf(" };\n\n");
|
| 66 |
|
| 67 |
printf(
|
| 68 |
"/* This table is a case flipping table. */\n\n"
|
| 69 |
"unsigned char pcre_fcc[] = {\n");
|
| 70 |
|
| 71 |
printf(" ");
|
| 72 |
for (i = 0; i < 256; i++)
|
| 73 |
{
|
| 74 |
if ((i & 7) == 0 && i != 0) printf("\n ");
|
| 75 |
printf("%3d", islower(i)? toupper(i) : tolower(i));
|
| 76 |
if (i != 255) printf(",");
|
| 77 |
}
|
| 78 |
printf(" };\n\n");
|
| 79 |
|
| 80 |
printf(
|
| 81 |
"/* This table contains bit maps for digits, letters, 'word' chars, and\n"
|
| 82 |
"white space. Each map is 32 bytes long and the bits run from the least\n"
|
| 83 |
"significant end of each byte. */\n\n"
|
| 84 |
"unsigned char pcre_cbits[] = {\n");
|
| 85 |
|
| 86 |
memset(cbits, 0, sizeof(cbits));
|
| 87 |
|
| 88 |
for (i = 0; i < 256; i++)
|
| 89 |
{
|
| 90 |
if (isdigit(i)) cbits[cbit_digit + i/8] |= 1 << (i&7);
|
| 91 |
if (isalpha(i)) cbits[cbit_letter + i/8] |= 1 << (i&7);
|
| 92 |
if (isalnum(i) || i == '_')
|
| 93 |
cbits[cbit_word + i/8] |= 1 << (i&7);
|
| 94 |
if (isspace(i)) cbits[cbit_space + i/8] |= 1 << (i&7);
|
| 95 |
}
|
| 96 |
|
| 97 |
printf(" ");
|
| 98 |
for (i = 0; i < cbit_length; i++)
|
| 99 |
{
|
| 100 |
if ((i & 7) == 0 && i != 0)
|
| 101 |
{
|
| 102 |
if ((i & 31) == 0) printf("\n");
|
| 103 |
printf("\n ");
|
| 104 |
}
|
| 105 |
printf("0x%02x", cbits[i]);
|
| 106 |
if (i != cbit_length - 1) printf(",");
|
| 107 |
}
|
| 108 |
printf(" };\n\n");
|
| 109 |
|
| 110 |
printf(
|
| 111 |
"/* This table identifies various classes of character by individual bits:\n"
|
| 112 |
" 0x%02x white space character\n"
|
| 113 |
" 0x%02x letter\n"
|
| 114 |
" 0x%02x decimal digit\n"
|
| 115 |
" 0x%02x hexadecimal digit\n"
|
| 116 |
" 0x%02x alphanumeric or '_'\n"
|
| 117 |
" 0x%02x regular expression metacharacter or binary zero\n*/\n\n",
|
| 118 |
ctype_space, ctype_letter, ctype_digit, ctype_xdigit, ctype_word,
|
| 119 |
ctype_meta);
|
| 120 |
|
| 121 |
printf("unsigned char pcre_ctypes[] = {\n");
|
| 122 |
|
| 123 |
printf(" ");
|
| 124 |
for (i = 0; i < 256; i++)
|
| 125 |
{
|
| 126 |
int x = 0;
|
| 127 |
if (isspace(i)) x += ctype_space;
|
| 128 |
if (isalpha(i)) x += ctype_letter;
|
| 129 |
if (isdigit(i)) x += ctype_digit;
|
| 130 |
if (isxdigit(i)) x += ctype_xdigit;
|
| 131 |
if (isalnum(i) || i == '_') x += ctype_word;
|
| 132 |
if (strchr("*+?{^.$|()[", i) != 0) x += ctype_meta;
|
| 133 |
|
| 134 |
if ((i & 7) == 0 && i != 0)
|
| 135 |
{
|
| 136 |
printf(" /* ");
|
| 137 |
if (isprint(i-8)) printf(" %c -", i-8);
|
| 138 |
else printf("%3d-", i-8);
|
| 139 |
if (isprint(i-1)) printf(" %c ", i-1);
|
| 140 |
else printf("%3d", i-1);
|
| 141 |
printf(" */\n ");
|
| 142 |
}
|
| 143 |
printf("0x%02x", x);
|
| 144 |
if (i != 255) printf(",");
|
| 145 |
}
|
| 146 |
|
| 147 |
printf("};/* ");
|
| 148 |
if (isprint(i-8)) printf(" %c -", i-8);
|
| 149 |
else printf("%3d-", i-8);
|
| 150 |
if (isprint(i-1)) printf(" %c ", i-1);
|
| 151 |
else printf("%3d", i-1);
|
| 152 |
printf(" */\n\n/* End of chartables.c */\n");
|
| 153 |
|
| 154 |
return 0;
|
| 155 |
}
|
| 156 |
|
| 157 |
/* End of maketables.c */
|
Parent Directory
| 
Revision Log