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/*************************************************
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* Perl-Compatible Regular Expressions *
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*************************************************/
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/*
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PCRE is a library of functions to support regular expressions whose syntax
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and semantics are as close as possible to those of the Perl 5 language.
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Written by: Philip Hazel <ph10@cam.ac.uk>
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Copyright (c) 1998 University of Cambridge
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-----------------------------------------------------------------------------
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Permission is granted to anyone to use this software for any purpose on any
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computer system, and to redistribute it freely, subject to the following
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restrictions:
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1. This software is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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2. The origin of this software must not be misrepresented, either by
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explicit claim or by omission.
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3. Altered versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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-----------------------------------------------------------------------------
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See the file Tech.Notes for some information on the internals.
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*/
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/* This is a support program to generate the file chartables.c, containing
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character tables of various kinds. They are built according to the local C
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locale. */
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#include <ctype.h>
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#include <stdio.h>
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#include <string.h>
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#include "internal.h"
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int main(void)
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{
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int i;
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unsigned char cbits[cbit_length];
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printf(
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"/*************************************************\n"
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"* Perl-Compatible Regular Expressions *\n"
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"*************************************************/\n\n"
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"/* This file is automatically written by the makechartables auxiliary \n"
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"program. If you edit it by hand, you might like to edit the Makefile to \n"
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"prevent its ever being regenerated. */\n\n"
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"/* This table is a lower casing table. */\n\n"
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"unsigned char pcre_lcc[] = {\n");
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printf(" ");
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for (i = 0; i < 256; i++)
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{
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if ((i & 7) == 0 && i != 0) printf("\n ");
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printf("%3d", tolower(i));
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if (i != 255) printf(",");
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}
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printf(" };\n\n");
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printf(
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"/* This table is a case flipping table. */\n\n"
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"unsigned char pcre_fcc[] = {\n");
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printf(" ");
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for (i = 0; i < 256; i++)
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{
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if ((i & 7) == 0 && i != 0) printf("\n ");
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printf("%3d", islower(i)? toupper(i) : tolower(i));
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if (i != 255) printf(",");
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}
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printf(" };\n\n");
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printf(
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"/* This table contains bit maps for digits, letters, 'word' chars, and\n"
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"white space. Each map is 32 bytes long and the bits run from the least\n"
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"significant end of each byte. */\n\n"
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"unsigned char pcre_cbits[] = {\n");
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memset(cbits, 0, sizeof(cbits));
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for (i = 0; i < 256; i++)
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{
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if (isdigit(i)) cbits[cbit_digit + i/8] |= 1 << (i&7);
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if (isalpha(i)) cbits[cbit_letter + i/8] |= 1 << (i&7);
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if (isalnum(i) || i == '_')
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cbits[cbit_word + i/8] |= 1 << (i&7);
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if (isspace(i)) cbits[cbit_space + i/8] |= 1 << (i&7);
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}
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printf(" ");
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for (i = 0; i < cbit_length; i++)
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{
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if ((i & 7) == 0 && i != 0)
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{
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if ((i & 31) == 0) printf("\n");
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printf("\n ");
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}
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printf("0x%02x", cbits[i]);
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if (i != cbit_length - 1) printf(",");
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}
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printf(" };\n\n");
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printf(
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"/* This table identifies various classes of character by individual bits:\n"
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" 0x%02x white space character\n"
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" 0x%02x letter\n"
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" 0x%02x decimal digit\n"
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" 0x%02x hexadecimal digit\n"
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" 0x%02x alphanumeric or '_'\n"
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" 0x%02x regular expression metacharacter or binary zero\n*/\n\n",
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ctype_space, ctype_letter, ctype_digit, ctype_xdigit, ctype_word,
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ctype_meta);
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printf("unsigned char pcre_ctypes[] = {\n");
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printf(" ");
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for (i = 0; i < 256; i++)
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{
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int x = 0;
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if (isspace(i)) x += ctype_space;
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if (isalpha(i)) x += ctype_letter;
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if (isdigit(i)) x += ctype_digit;
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if (isxdigit(i)) x += ctype_xdigit;
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if (isalnum(i) || i == '_') x += ctype_word;
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if (strchr("*+?{^.$|()[", i) != 0) x += ctype_meta;
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if ((i & 7) == 0 && i != 0)
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{
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printf(" /* ");
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if (isprint(i-8)) printf(" %c -", i-8);
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else printf("%3d-", i-8);
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if (isprint(i-1)) printf(" %c ", i-1);
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else printf("%3d", i-1);
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printf(" */\n ");
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}
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printf("0x%02x", x);
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if (i != 255) printf(",");
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}
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printf("};/* ");
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if (isprint(i-8)) printf(" %c -", i-8);
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else printf("%3d-", i-8);
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if (isprint(i-1)) printf(" %c ", i-1);
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else printf("%3d", i-1);
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printf(" */\n\n/* End of chartables.c */\n");
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return 0;
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}
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/* End of maketables.c */
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