X-Git-Url: https://git.mdrn.pl/pylucene.git/blobdiff_plain/a2e61f0c04805cfcb8706176758d1283c7e3a55c..aaeed5504b982cf3545252ab528713250aa33eed:/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/wikipedia/WikipediaTokenizerImpl.jflex diff --git a/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/wikipedia/WikipediaTokenizerImpl.jflex b/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/wikipedia/WikipediaTokenizerImpl.jflex new file mode 100644 index 0000000..4846143 --- /dev/null +++ b/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/wikipedia/WikipediaTokenizerImpl.jflex @@ -0,0 +1,330 @@ +package org.apache.lucene.analysis.wikipedia; + +/** + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +import org.apache.lucene.analysis.tokenattributes.CharTermAttribute; + +%% + +%class WikipediaTokenizerImpl +%unicode 3.0 +%integer +%function getNextToken +%pack +%char + +%{ + +public static final int ALPHANUM = WikipediaTokenizer.ALPHANUM_ID; +public static final int APOSTROPHE = WikipediaTokenizer.APOSTROPHE_ID; +public static final int ACRONYM = WikipediaTokenizer.ACRONYM_ID; +public static final int COMPANY = WikipediaTokenizer.COMPANY_ID; +public static final int EMAIL = WikipediaTokenizer.EMAIL_ID; +public static final int HOST = WikipediaTokenizer.HOST_ID; +public static final int NUM = WikipediaTokenizer.NUM_ID; +public static final int CJ = WikipediaTokenizer.CJ_ID; +public static final int INTERNAL_LINK = WikipediaTokenizer.INTERNAL_LINK_ID; +public static final int EXTERNAL_LINK = WikipediaTokenizer.EXTERNAL_LINK_ID; +public static final int CITATION = WikipediaTokenizer.CITATION_ID; +public static final int CATEGORY = WikipediaTokenizer.CATEGORY_ID; +public static final int BOLD = WikipediaTokenizer.BOLD_ID; +public static final int ITALICS = WikipediaTokenizer.ITALICS_ID; +public static final int BOLD_ITALICS = WikipediaTokenizer.BOLD_ITALICS_ID; +public static final int HEADING = WikipediaTokenizer.HEADING_ID; +public static final int SUB_HEADING = WikipediaTokenizer.SUB_HEADING_ID; +public static final int EXTERNAL_LINK_URL = WikipediaTokenizer.EXTERNAL_LINK_URL_ID; + + +private int currentTokType; +private int numBalanced = 0; +private int positionInc = 1; +private int numLinkToks = 0; +//Anytime we start a new on a Wiki reserved token (category, link, etc.) this value will be 0, otherwise it will be the number of tokens seen +//this can be useful for detecting when a new reserved token is encountered +//see https://issues.apache.org/jira/browse/LUCENE-1133 +private int numWikiTokensSeen = 0; + +public static final String [] TOKEN_TYPES = WikipediaTokenizer.TOKEN_TYPES; + +/** +Returns the number of tokens seen inside a category or link, etc. +@return the number of tokens seen inside the context of wiki syntax. +**/ +public final int getNumWikiTokensSeen(){ + return numWikiTokensSeen; +} + +public final int yychar() +{ + return yychar; +} + +public final int getPositionIncrement(){ + return positionInc; +} + +/** + * Fills Lucene token with the current token text. + */ +final void getText(CharTermAttribute t) { + t.copyBuffer(zzBuffer, zzStartRead, zzMarkedPos-zzStartRead); +} + +final int setText(StringBuilder buffer){ + int length = zzMarkedPos - zzStartRead; + buffer.append(zzBuffer, zzStartRead, length); + return length; +} + + +%} + +// basic word: a sequence of digits & letters +ALPHANUM = ({LETTER}|{DIGIT}|{KOREAN})+ + +// internal apostrophes: O'Reilly, you're, O'Reilly's +// use a post-filter to remove possesives +APOSTROPHE = {ALPHA} ("'" {ALPHA})+ + +// acronyms: U.S.A., I.B.M., etc. +// use a post-filter to remove dots +ACRONYM = {ALPHA} "." ({ALPHA} ".")+ + +// company names like AT&T and Excite@Home. +COMPANY = {ALPHA} ("&"|"@") {ALPHA} + +// email addresses +EMAIL = {ALPHANUM} (("."|"-"|"_") {ALPHANUM})* "@" {ALPHANUM} (("."|"-") {ALPHANUM})+ + +// hostname +HOST = {ALPHANUM} ((".") {ALPHANUM})+ + +// floating point, serial, model numbers, ip addresses, etc. +// every other segment must have at least one digit +NUM = ({ALPHANUM} {P} {HAS_DIGIT} + | {DIGIT}+ {P} {DIGIT}+ + | {HAS_DIGIT} {P} {ALPHANUM} + | {ALPHANUM} ({P} {HAS_DIGIT} {P} {ALPHANUM})+ + | {HAS_DIGIT} ({P} {ALPHANUM} {P} {HAS_DIGIT})+ + | {ALPHANUM} {P} {HAS_DIGIT} ({P} {ALPHANUM} {P} {HAS_DIGIT})+ + | {HAS_DIGIT} {P} {ALPHANUM} ({P} {HAS_DIGIT} {P} {ALPHANUM})+) + +TAGS = "<"\/?{ALPHANUM}({WHITESPACE}*{ALPHANUM}=\"{ALPHANUM}\")*">" + +// punctuation +P = ("_"|"-"|"/"|"."|",") + +// at least one digit +HAS_DIGIT = + ({LETTER}|{DIGIT})* + {DIGIT} + ({LETTER}|{DIGIT})* + +ALPHA = ({LETTER})+ + + +LETTER = [\u0041-\u005a\u0061-\u007a\u00c0-\u00d6\u00d8-\u00f6\u00f8-\u00ff\u0100-\u1fff\uffa0-\uffdc] + +DIGIT = [\u0030-\u0039\u0660-\u0669\u06f0-\u06f9\u0966-\u096f\u09e6-\u09ef\u0a66-\u0a6f\u0ae6-\u0aef\u0b66-\u0b6f\u0be7-\u0bef\u0c66-\u0c6f\u0ce6-\u0cef\u0d66-\u0d6f\u0e50-\u0e59\u0ed0-\u0ed9\u1040-\u1049] + +KOREAN = [\uac00-\ud7af\u1100-\u11ff] + +// Chinese, Japanese +CJ = [\u3040-\u318f\u3100-\u312f\u3040-\u309F\u30A0-\u30FF\u31F0-\u31FF\u3300-\u337f\u3400-\u4dbf\u4e00-\u9fff\uf900-\ufaff\uff65-\uff9f] + +WHITESPACE = \r\n | [ \r\n\t\f] + +//Wikipedia +DOUBLE_BRACKET = "["{2} +DOUBLE_BRACKET_CLOSE = "]"{2} +DOUBLE_BRACKET_CAT = "["{2}":"?"Category:" +EXTERNAL_LINK = "[" +TWO_SINGLE_QUOTES = "'"{2} +CITATION = "" +CITATION_CLOSE = "" +INFOBOX = {DOUBLE_BRACE}("I"|"i")nfobox_ + +DOUBLE_BRACE = "{"{2} +DOUBLE_BRACE_CLOSE = "}"{2} +PIPE = "|" +DOUBLE_EQUALS = "="{2} + + +%state CATEGORY_STATE +%state INTERNAL_LINK_STATE +%state EXTERNAL_LINK_STATE + +%state TWO_SINGLE_QUOTES_STATE +%state THREE_SINGLE_QUOTES_STATE +%state FIVE_SINGLE_QUOTES_STATE +%state DOUBLE_EQUALS_STATE +%state DOUBLE_BRACE_STATE +%state STRING + +%% + +{ALPHANUM} {positionInc = 1; return ALPHANUM; } +{APOSTROPHE} {positionInc = 1; return APOSTROPHE; } +{ACRONYM} {positionInc = 1; return ACRONYM; } +{COMPANY} {positionInc = 1; return COMPANY; } +{EMAIL} {positionInc = 1; return EMAIL; } +{NUM} {positionInc = 1; return NUM; } +{HOST} {positionInc = 1; return HOST; } +{CJ} {positionInc = 1; return CJ; } + +//wikipedia +{ + //First {ALPHANUM} is always the link, set positioninc to 1 for double bracket, but then inside the internal link state + //set it to 0 for the next token, such that the link and the first token are in the same position, but then subsequent + //tokens within the link are incremented + {DOUBLE_BRACKET} {numWikiTokensSeen = 0; positionInc = 1; currentTokType = INTERNAL_LINK; yybegin(INTERNAL_LINK_STATE);/* Break so we don't hit fall-through warning: */ break;} + {DOUBLE_BRACKET_CAT} {numWikiTokensSeen = 0; positionInc = 1; currentTokType = CATEGORY; yybegin(CATEGORY_STATE);/* Break so we don't hit fall-through warning: */ break;} + {EXTERNAL_LINK} {numWikiTokensSeen = 0; positionInc = 1; currentTokType = EXTERNAL_LINK_URL; yybegin(EXTERNAL_LINK_STATE);/* Break so we don't hit fall-through warning: */ break;} + {TWO_SINGLE_QUOTES} {numWikiTokensSeen = 0; positionInc = 1; if (numBalanced == 0){numBalanced++;yybegin(TWO_SINGLE_QUOTES_STATE);} else{numBalanced = 0;}/* Break so we don't hit fall-through warning: */ break;} + {DOUBLE_EQUALS} {numWikiTokensSeen = 0; positionInc = 1; yybegin(DOUBLE_EQUALS_STATE);/* Break so we don't hit fall-through warning: */ break;} + {DOUBLE_BRACE} {numWikiTokensSeen = 0; positionInc = 1; currentTokType = CITATION; yybegin(DOUBLE_BRACE_STATE);/* Break so we don't hit fall-through warning: */ break;} + {CITATION} {numWikiTokensSeen = 0; positionInc = 1; currentTokType = CITATION; yybegin(DOUBLE_BRACE_STATE);/* Break so we don't hit fall-through warning: */ break;} +//ignore + . | {WHITESPACE} |{INFOBOX} {numWikiTokensSeen = 0; positionInc = 1; /* Break so we don't hit fall-through warning: */ break;} +} + +{ +//First {ALPHANUM} is always the link, set position to 0 for these +//This is slightly different from EXTERNAL_LINK_STATE because that one has an explicit grammar for capturing the URL + {ALPHANUM} {yybegin(INTERNAL_LINK_STATE); numWikiTokensSeen++; return currentTokType;} + {DOUBLE_BRACKET_CLOSE} {numLinkToks = 0; yybegin(YYINITIAL); /* Break so we don't hit fall-through warning: */ break;} + //ignore + . | {WHITESPACE} { positionInc = 1; /* Break so we don't hit fall-through warning: */ break;} +} + +{ +//increment the link token, but then don't increment the tokens after that which are still in the link + ("http://"|"https://"){HOST}("/"?({ALPHANUM}|{P}|\?|"&"|"="|"#")*)* {positionInc = 1; numWikiTokensSeen++; yybegin(EXTERNAL_LINK_STATE); return currentTokType;} + {ALPHANUM} {if (numLinkToks == 0){positionInc = 0;} else{positionInc = 1;} numWikiTokensSeen++; currentTokType = EXTERNAL_LINK; yybegin(EXTERNAL_LINK_STATE); numLinkToks++; return currentTokType;} + "]" {numLinkToks = 0; positionInc = 0; yybegin(YYINITIAL); /* Break so we don't hit fall-through warning: */ break;} + {WHITESPACE} { positionInc = 1; /* Break so we don't hit fall-through warning: */ break;} +} + +{ + {ALPHANUM} {yybegin(CATEGORY_STATE); numWikiTokensSeen++; return currentTokType;} + {DOUBLE_BRACKET_CLOSE} {yybegin(YYINITIAL);/* Break so we don't hit fall-through warning: */ break;} + //ignore + . | {WHITESPACE} { positionInc = 1; /* Break so we don't hit fall-through warning: */ break;} +} +//italics +{ + "'" {currentTokType = BOLD; yybegin(THREE_SINGLE_QUOTES_STATE); /* Break so we don't hit fall-through warning: */ break;} + "'''" {currentTokType = BOLD_ITALICS; yybegin(FIVE_SINGLE_QUOTES_STATE); /* Break so we don't hit fall-through warning: */ break;} + {ALPHANUM} {currentTokType = ITALICS; numWikiTokensSeen++; yybegin(STRING); return currentTokType;/*italics*/} + //we can have links inside, let those override + {DOUBLE_BRACKET} {currentTokType = INTERNAL_LINK; numWikiTokensSeen = 0; yybegin(INTERNAL_LINK_STATE); /* Break so we don't hit fall-through warning: */ break;} + {DOUBLE_BRACKET_CAT} {currentTokType = CATEGORY; numWikiTokensSeen = 0; yybegin(CATEGORY_STATE); /* Break so we don't hit fall-through warning: */ break;} + {EXTERNAL_LINK} {currentTokType = EXTERNAL_LINK; numWikiTokensSeen = 0; yybegin(EXTERNAL_LINK_STATE); /* Break so we don't hit fall-through warning: */ break;} + + //ignore + . | {WHITESPACE} { /* Break so we don't hit fall-through warning: */ break;/* ignore */ } +} +//bold +{ + {ALPHANUM} {yybegin(STRING); numWikiTokensSeen++; return currentTokType;} + //we can have links inside, let those override + {DOUBLE_BRACKET} {currentTokType = INTERNAL_LINK; numWikiTokensSeen = 0; yybegin(INTERNAL_LINK_STATE); /* Break so we don't hit fall-through warning: */ break;} + {DOUBLE_BRACKET_CAT} {currentTokType = CATEGORY; numWikiTokensSeen = 0; yybegin(CATEGORY_STATE); /* Break so we don't hit fall-through warning: */ break;} + {EXTERNAL_LINK} {currentTokType = EXTERNAL_LINK; numWikiTokensSeen = 0; yybegin(EXTERNAL_LINK_STATE); /* Break so we don't hit fall-through warning: */ break;} + + //ignore + . | {WHITESPACE} { /* Break so we don't hit fall-through warning: */ break;/* ignore */ } + +} +//bold italics +{ + {ALPHANUM} {yybegin(STRING); numWikiTokensSeen++; return currentTokType;} + //we can have links inside, let those override + {DOUBLE_BRACKET} {currentTokType = INTERNAL_LINK; numWikiTokensSeen = 0; yybegin(INTERNAL_LINK_STATE); /* Break so we don't hit fall-through warning: */ break;} + {DOUBLE_BRACKET_CAT} {currentTokType = CATEGORY; numWikiTokensSeen = 0; yybegin(CATEGORY_STATE); /* Break so we don't hit fall-through warning: */ break;} + {EXTERNAL_LINK} {currentTokType = EXTERNAL_LINK; numWikiTokensSeen = 0; yybegin(EXTERNAL_LINK_STATE); /* Break so we don't hit fall-through warning: */ break;} + + //ignore + . | {WHITESPACE} { /* Break so we don't hit fall-through warning: */ break;/* ignore */ } +} + +{ + "=" {currentTokType = SUB_HEADING; numWikiTokensSeen = 0; yybegin(STRING); /* Break so we don't hit fall-through warning: */ break;} + {ALPHANUM} {currentTokType = HEADING; yybegin(DOUBLE_EQUALS_STATE); numWikiTokensSeen++; return currentTokType;} + {DOUBLE_EQUALS} {yybegin(YYINITIAL); /* Break so we don't hit fall-through warning: */ break;} + //ignore + . | {WHITESPACE} { /* Break so we don't hit fall-through warning: */ break;/* ignore */ } +} + +{ + {ALPHANUM} {yybegin(DOUBLE_BRACE_STATE); numWikiTokensSeen = 0; return currentTokType;} + {DOUBLE_BRACE_CLOSE} {yybegin(YYINITIAL); /* Break so we don't hit fall-through warning: */ break;} + {CITATION_CLOSE} {yybegin(YYINITIAL); /* Break so we don't hit fall-through warning: */ break;} + //ignore + . | {WHITESPACE} { /* Break so we don't hit fall-through warning: */ break;/* ignore */ } +} + + { + "'''''" {numBalanced = 0;currentTokType = ALPHANUM; yybegin(YYINITIAL); /* Break so we don't hit fall-through warning: */ break;/*end bold italics*/} + "'''" {numBalanced = 0;currentTokType = ALPHANUM;yybegin(YYINITIAL); /* Break so we don't hit fall-through warning: */ break;/*end bold*/} + "''" {numBalanced = 0;currentTokType = ALPHANUM; yybegin(YYINITIAL); /* Break so we don't hit fall-through warning: */ break;/*end italics*/} + "===" {numBalanced = 0;currentTokType = ALPHANUM; yybegin(YYINITIAL); /* Break so we don't hit fall-through warning: */ break;/*end sub header*/} + {ALPHANUM} {yybegin(STRING); numWikiTokensSeen++; return currentTokType;/* STRING ALPHANUM*/} + //we can have links inside, let those override + {DOUBLE_BRACKET} {numBalanced = 0; numWikiTokensSeen = 0; currentTokType = INTERNAL_LINK;yybegin(INTERNAL_LINK_STATE); /* Break so we don't hit fall-through warning: */ break;} + {DOUBLE_BRACKET_CAT} {numBalanced = 0; numWikiTokensSeen = 0; currentTokType = CATEGORY;yybegin(CATEGORY_STATE); /* Break so we don't hit fall-through warning: */ break;} + {EXTERNAL_LINK} {numBalanced = 0; numWikiTokensSeen = 0; currentTokType = EXTERNAL_LINK;yybegin(EXTERNAL_LINK_STATE); /* Break so we don't hit fall-through warning: */ break;} + + + {PIPE} {yybegin(STRING); return currentTokType;/*pipe*/} + + .|{WHITESPACE} { /* Break so we don't hit fall-through warning: */ break;/* ignore STRING */ } +} + + + + +/* +{INTERNAL_LINK} { return curentTokType; } + +{CITATION} { return currentTokType; } +{CATEGORY} { return currentTokType; } + +{BOLD} { return currentTokType; } +{ITALICS} { return currentTokType; } +{BOLD_ITALICS} { return currentTokType; } +{HEADING} { return currentTokType; } +{SUB_HEADING} { return currentTokType; } + +*/ +//end wikipedia + +/** Ignore the rest */ +. | {WHITESPACE}|{TAGS} { /* Break so we don't hit fall-through warning: */ break;/* ignore */ } + + +//INTERNAL_LINK = "["{2}({ALPHANUM}+{WHITESPACE}*)+"]"{2} +//EXTERNAL_LINK = "["http://"{HOST}.*?"]" +//CITATION = "{"{2}({ALPHANUM}+{WHITESPACE}*)+"}"{2} +//CATEGORY = "["{2}"Category:"({ALPHANUM}+{WHITESPACE}*)+"]"{2} +//CATEGORY_COLON = "["{2}":Category:"({ALPHANUM}+{WHITESPACE}*)+"]"{2} +//BOLD = '''({ALPHANUM}+{WHITESPACE}*)+''' +//ITALICS = ''({ALPHANUM}+{WHITESPACE}*)+'' +//BOLD_ITALICS = '''''({ALPHANUM}+{WHITESPACE}*)+''''' +//HEADING = "="{2}({ALPHANUM}+{WHITESPACE}*)+"="{2} +//SUB_HEADING ="="{3}({ALPHANUM}+{WHITESPACE}*)+"="{3}