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141 lines
5.1 KiB
PHP
141 lines
5.1 KiB
PHP
@!
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@! ***** BEGIN LICENSE BLOCK *****
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@! Version: MPL 1.1/GPL 2.0/LGPL 2.1
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@!
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@! The contents of this file are subject to the Mozilla Public License Version
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@! 1.1 (the "License"); you may not use this file except in compliance with
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@! the License. You may obtain a copy of the License at
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@! http://www.mozilla.org/MPL/
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@!
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@! Software distributed under the License is distributed on an "AS IS" basis,
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@! WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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@! for the specific language governing rights and limitations under the
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@! License.
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@!
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@! The Original Code is mozilla.org code.
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@!
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@! The Initial Developer of the Original Code is
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@! Netscape Communications Corporation.
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@! Portions created by the Initial Developer are Copyright (C) 1998
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@! the Initial Developer. All Rights Reserved.
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@!
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@! Contributor(s):
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@!
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@! Alternatively, the contents of this file may be used under the terms of
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@! either of the GNU General Public License Version 2 or later (the "GPL"),
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@! or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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@! in which case the provisions of the GPL or the LGPL are applicable instead
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@! of those above. If you wish to allow use of your version of this file only
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@! under the terms of either the GPL or the LGPL, and not to allow others to
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@! use your version of this file under the terms of the MPL, indicate your
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@! decision by deleting the provisions above and replace them with the notice
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@! and other provisions required by the GPL or the LGPL. If you do not delete
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@! the provisions above, a recipient may use your version of this file under
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@! the terms of any one of the MPL, the GPL or the LGPL.
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@!
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@! ***** END LICENSE BLOCK *****
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@! This file is used to generate static hash table lookups.
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@! A perl script merges this file with the output of gperf to produce
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@! the hash functions. Lines starting with @! are comments. Lines which do
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@! not being with @! are copied straight to the output file. "@begin NAME
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@! /REGEX1/ /REGEX2/" means to skip lines in the input until REGEX1 is
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@! matched, and then begin saving output under name NAME, and stop when
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@! REGEX2 is matched. "@include NAME" inserts the data saved as "NAME".
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@! "@SUB NAME SUBREGEX" performs a substitution on the data saved in NAME.
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@!
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@! The following goop extracts the parts we need from the generated output
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@! of gperf. We later merge that goop with custom code to generate
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@! the tag lookup function.
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@!
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@begin MACROS /#define/ /^$/
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@begin HASH_TABLE /static unsigned [a-z]+ (asso_values|hash_table)/ /};/
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@begin HASH_FUNC /register int hval = len;/ /return hval/
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@sub HASH_FUNC /return hval \+/hval +=/
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@sub HASH_FUNC /str\[/MYLOWER(str[/
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@sub HASH_FUNC /]]/])]/
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@begin LENGTH_TABLE /static unsigned char lengthtable/ /};/
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@begin TAG_TABLE /static struct StaticNameTable *wordlist/ /};/
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@!
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/*
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** This is a generated file, do not edit it. This file is created by
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** genhash.pl
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*/
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#include "plstr.h"
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@classincl
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@include MACROS
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struct StaticNameTable {
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char* tag;
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PRInt32 id;
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};
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static const unsigned char kLowerLookup[256] = {
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0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
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16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,
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32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,
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48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,
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64,
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97,98,99,100,101,102,103,104,105,106,107,108,109,
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110,111,112,113,114,115,116,117,118,119,120,121,122,
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91, 92, 93, 94, 95, 96, 97, 98, 99,100,101,102,103,104,105,106,107,108,109,110,111,
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112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,
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128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,
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144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,
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160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,
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176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,
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192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,
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208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,
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224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,
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240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255
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};
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#define MYLOWER(x) kLowerLookup[((x) & 0x7f)]
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/**
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* Map a name to an ID or -1
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*/
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@classfunc
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{
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@include HASH_TABLE
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@include LENGTH_TABLE
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@include TAG_TABLE
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if (str != NULL) {
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int len = PL_strlen(str);
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if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH) {
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@include HASH_FUNC
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@! "hval" now contains hash value
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if (hval <= MAX_HASH_VALUE && hval >= MIN_HASH_VALUE) {
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if (len == lengthtable[hval]) {
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register const char *tag = wordlist[hval].tag;
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/*
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** While not at the end of the string, if they ever differ
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** they are not equal. We know "tag" is already lower case.
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*/
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while ((*tag != '\0')&&(*str != '\0')) {
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if (*tag != (char) MYLOWER(*str)) {
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return -1;
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}
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tag++;
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str++;
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}
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/*
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** One of the strings has ended, if they are both ended, then they
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** are equal, otherwise not.
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*/
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if ((*tag == '\0')&&(*str == '\0')) {
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return wordlist[hval].id;
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}
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}
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}
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}
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}
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return -1;
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}
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