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Code Issues Releases Wiki Activity

refactor: move links ast extractor to a file

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lin onetwo 2024-06-17 17:51:50 +08:00
parent 61d5484f09
commit 5600a00cd8
2 changed files with 60 additions and 60 deletions
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60
core/modules/wiki-extract.js
View File

@ -12,6 +12,66 @@ AST information extractor for indexers.
/*global $tw: false */ /*global $tw: false */
"use strict"; "use strict";
/*
Return an array of tiddler titles that are directly linked within the given parse tree
*/
exports.extractLinks = function(parseTreeRoot) {
// Count up the links
var links = [],
checkParseTree = function(parseTree) {
for(var t=0; t<parseTree.length; t++) {
var parseTreeNode = parseTree[t];
if(parseTreeNode.type === "link" && parseTreeNode.attributes.to && parseTreeNode.attributes.to.type === "string") {
var value = parseTreeNode.attributes.to.value;
if(links.indexOf(value) === -1) {
links.push(value);
}
}
if(parseTreeNode.children) {
checkParseTree(parseTreeNode.children);
}
}
};
checkParseTree(parseTreeRoot);
return links;
};
/*
Return an array of tiddler titles that are directly linked from the specified tiddler
*/
exports.getTiddlerLinks = function(title) {
var self = this;
// We'll cache the links so they only get computed if the tiddler changes
return this.getCacheForTiddler(title,"links",function() {
// Parse the tiddler
var parser = self.parseTiddler(title);
if(parser) {
return self.extractLinks(parser.tree);
}
return [];
});
};
/*
Return an array of tiddler titles that link to the specified tiddler
*/
exports.getTiddlerBacklinks = function(targetTitle) {
var self = this,
backIndexer = this.getIndexer("BackIndexer"),
backlinks = backIndexer && backIndexer.subIndexers.link.lookup(targetTitle);
if(!backlinks) {
backlinks = [];
this.forEachTiddler(function(title,tiddler) {
var links = self.getTiddlerLinks(title);
if(links.indexOf(targetTitle) !== -1) {
backlinks.push(title);
}
});
}
return backlinks;
};
/* /*
Return an array of tiddler titles that are directly transcluded within the given parse tree. `title` is the tiddler being parsed, we will ignore its self-referential transclusions, only return Return an array of tiddler titles that are directly transcluded within the given parse tree. `title` is the tiddler being parsed, we will ignore its self-referential transclusions, only return
*/ */

60
core/modules/wiki.js
View File

@ -489,66 +489,6 @@ exports.forEachTiddler = function(/* [options,]callback */) {
} }
}; };
/*
Return an array of tiddler titles that are directly linked within the given parse tree
*/
exports.extractLinks = function(parseTreeRoot) {
// Count up the links
var links = [],
checkParseTree = function(parseTree) {
for(var t=0; t<parseTree.length; t++) {
var parseTreeNode = parseTree[t];
if(parseTreeNode.type === "link" && parseTreeNode.attributes.to && parseTreeNode.attributes.to.type === "string") {
var value = parseTreeNode.attributes.to.value;
if(links.indexOf(value) === -1) {
links.push(value);
}
}
if(parseTreeNode.children) {
checkParseTree(parseTreeNode.children);
}
}
};
checkParseTree(parseTreeRoot);
return links;
};
/*
Return an array of tiddler titles that are directly linked from the specified tiddler
*/
exports.getTiddlerLinks = function(title) {
var self = this;
// We'll cache the links so they only get computed if the tiddler changes
return this.getCacheForTiddler(title,"links",function() {
// Parse the tiddler
var parser = self.parseTiddler(title);
if(parser) {
return self.extractLinks(parser.tree);
}
return [];
});
};
/*
Return an array of tiddler titles that link to the specified tiddler
*/
exports.getTiddlerBacklinks = function(targetTitle) {
var self = this,
backIndexer = this.getIndexer("BackIndexer"),
backlinks = backIndexer && backIndexer.subIndexers.link.lookup(targetTitle);
if(!backlinks) {
backlinks = [];
this.forEachTiddler(function(title,tiddler) {
var links = self.getTiddlerLinks(title);
if(links.indexOf(targetTitle) !== -1) {
backlinks.push(title);
}
});
}
return backlinks;
};
/* /*
Return a hashmap of tiddler titles that are referenced but not defined. Each value is the number of times the missing tiddler is referenced Return a hashmap of tiddler titles that are referenced but not defined. Each value is the number of times the missing tiddler is referenced
*/ */