mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-11-26 11:37:20 +00:00
479 lines
15 KiB
JavaScript
479 lines
15 KiB
JavaScript
/*\
|
|
title: $:/plugins/tiddlywiki/text-slicer/modules/slicer.js
|
|
type: application/javascript
|
|
module-type: library
|
|
|
|
Slice a tiddler or DOM document into individual tiddlers
|
|
|
|
var slicer = new textSlicer.Slicer(doc,{
|
|
slicerRules: JSON data defining slicer rules -or- title of rules taken from tiddlers tagged $:/tags/text-slicer/slicer-rules
|
|
sourceTiddlerTitle: tiddler to slice -or-
|
|
sourceText: text to slice
|
|
outputMode: "html" (default) -or- "wiki"
|
|
baseTiddlerTitle: "MySlicedTiddlers-"
|
|
role: "sliced-content"
|
|
callback: function(err,tiddlers)
|
|
});
|
|
|
|
\*/
|
|
(function(){
|
|
|
|
/*jslint node: true, browser: true */
|
|
/*global $tw: false */
|
|
"use strict";
|
|
|
|
function Slicer(options) {
|
|
// Quick tests
|
|
this.testSlicerRuleMatching();
|
|
// Marshal parameters
|
|
this.sourceTiddlerTitle = options.sourceTiddlerTitle;
|
|
this.sourceText = options.sourceText;
|
|
this.wiki = options.wiki;
|
|
this.role = options.role || "sliced-html";
|
|
this.outputMode = options.outputMode || "html";
|
|
this.escapeWikiText = options.escapeWikiText || false;
|
|
this.callbackFn = options.callback;
|
|
// Get the slicer rules
|
|
var nameSlicerRules = null;
|
|
if(!options.slicerRules) {
|
|
nameSlicerRules = "html-by-paragraph";
|
|
this.slicerRules = this.loadSlicerRules(nameSlicerRules);
|
|
} else if(typeof options.slicerRules === "string") {
|
|
nameSlicerRules = options.slicerRules;
|
|
this.slicerRules = this.loadSlicerRules(nameSlicerRules);
|
|
} else {
|
|
this.slicerRules = options.slicerRules;
|
|
}
|
|
// Set up the base tiddler title
|
|
this.baseTiddlerTitle = this.getBaseTiddlerTitle(options.baseTiddlerTitle);
|
|
// Initialise state
|
|
this.namespaces = {}; // Hashmap of URLs
|
|
this.chunks = []; // Array of tiddlers without titles, addressed by their index. We use the title field to hold the plain text content
|
|
this.currentChunk = null; // Index of the chunk currently being written to
|
|
this.parentStack = []; // Stack of parent chunks {chunk: chunk index,actions:}
|
|
this.elementStack = []; // Stack of {tag:,isSelfClosing:,actions:}
|
|
this.titleCounts = {}; // Hashmap of counts of prefixed titles that have been issued
|
|
// Set up the document tiddler as top level heading
|
|
this.chunks.push({
|
|
"toc-type": "document",
|
|
title: this.baseTiddlerTitle,
|
|
text: "<div class='tc-table-of-contents'><<toc-selective-expandable \"\"\"" + this.baseTiddlerTitle + "document\"\"\">></div>",
|
|
list: [],
|
|
tags: [],
|
|
role: this.role,
|
|
"slicer-rules": nameSlicerRules,
|
|
"slicer-output-mode": this.outputMode
|
|
});
|
|
this.parentStack.push({chunk: 0, actions: this.getMatchingSlicerRuleActions("(document)")});
|
|
this.insertPrecedingChunk({
|
|
"toc-type": "anchor",
|
|
"title": this.baseTiddlerTitle + "-anchor-"
|
|
});
|
|
// Set up the parser
|
|
var sax = require("$:/plugins/tiddlywiki/sax/sax.js");
|
|
this.sax = sax.parser(false,{
|
|
xmlns: true,
|
|
lowercase: true
|
|
});
|
|
this.sax.onerror = this.onError.bind(this);
|
|
this.sax.onopennamespace = this.onOpenNamespace.bind(this);
|
|
this.sax.onclosenamespace = this.onCloseNamespace.bind(this);
|
|
this.sax.onopentag = this.onOpenTag.bind(this);
|
|
this.sax.onclosetag = this.onCloseTag.bind(this);
|
|
this.sax.ontext = this.onText.bind(this);
|
|
this.sax.onend = this.onEnd.bind(this);
|
|
// Start streaming the data
|
|
this.sax.write(this.getSourceText());
|
|
this.sax.close();
|
|
}
|
|
|
|
Slicer.prototype.callback = function(err,tiddlers) {
|
|
var self = this;
|
|
$tw.utils.nextTick(function() {
|
|
self.callbackFn(err,tiddlers);
|
|
});
|
|
};
|
|
|
|
Slicer.prototype.loadSlicerRules = function(name) {
|
|
// Collect the available slicer rule tiddlers
|
|
var self = this,
|
|
titles = this.wiki.getTiddlersWithTag("$:/tags/text-slicer/slicer-rules"),
|
|
tiddlers = {},
|
|
rules = {},
|
|
ruleNames = [];
|
|
titles.forEach(function(title) {
|
|
var tiddler = self.wiki.getTiddler(title);
|
|
tiddlers[tiddler.fields.name] = tiddler;
|
|
rules[tiddler.fields.name] = self.wiki.getTiddlerData(title,[]);
|
|
});
|
|
// Follow the inheritance trail to get a stack of slicer rule names
|
|
var n = name;
|
|
do {
|
|
ruleNames.push(n);
|
|
n = tiddlers[n] && tiddlers[n].fields["inherits-from"];
|
|
} while(n && ruleNames.indexOf(n) === -1);
|
|
// Concatenate the slicer rules
|
|
rules = ruleNames.reduce(function(accumulator,name) {
|
|
return accumulator.concat(rules[name]);
|
|
},[]);
|
|
return rules;
|
|
};
|
|
|
|
Slicer.prototype.getMatchingSlicerRuleActions = function(name) {
|
|
var rule = this.searchSlicerRules(name,this.slicerRules,this.elementStack);
|
|
if(!rule) {
|
|
return {};
|
|
} else {
|
|
return rule.actions;
|
|
}
|
|
};
|
|
|
|
Slicer.prototype.testSlicerRuleMatching = function() {
|
|
var tests = [
|
|
{
|
|
test: this.searchSlicerRules("title",[
|
|
{selector: "title,head,body", rules: true},
|
|
{selector: "body", rules: true}
|
|
],[
|
|
{tag:"head"}
|
|
]),
|
|
result: "title,head,body"
|
|
},
|
|
{
|
|
test: this.searchSlicerRules("body",[
|
|
{selector: "title,head,body", rules: true},
|
|
{selector: "body", rules: true}
|
|
],[
|
|
{tag:"head"}
|
|
]),
|
|
result: "title,head,body"
|
|
},
|
|
{
|
|
test: this.searchSlicerRules("title",[
|
|
{selector: "head > title", rules: true},
|
|
{selector: "title", rules: true}
|
|
],[
|
|
{tag:"head"}
|
|
]),
|
|
result: "head > title"
|
|
}
|
|
],
|
|
results = tests.forEach(function(test,index) {
|
|
if(test.test.selector !== test.result) {
|
|
throw "Failing test " + index + ", returns " + test.test.selector + " instead of " + test.result;
|
|
}
|
|
});
|
|
};
|
|
|
|
Slicer.prototype.searchSlicerRules = function(name,rules,elementStack) {
|
|
return rules.find(function(rule) {
|
|
// Split and trim the selectors for this rule
|
|
return !!rule.selector.split(",").map(function(selector) {
|
|
return selector.trim();
|
|
// Find the first selector that matches, if any
|
|
}).find(function(selector) {
|
|
// Split and trim the parts of the selector
|
|
var parts = selector.split(" ").map(function(part) {
|
|
return part.trim();
|
|
});
|
|
// * matches any element
|
|
if(parts.length === 1 && parts[0] === "*") {
|
|
return true;
|
|
}
|
|
// Make a copy of the element stack so that we can be destructive
|
|
var elements = elementStack.slice(0).concat({tag: name}),
|
|
nextElementMustBeAtTopOfStack = true,
|
|
currentPart = parts.length - 1;
|
|
while(currentPart >= 0) {
|
|
if(parts[currentPart] === ">") {
|
|
nextElementMustBeAtTopOfStack = true;
|
|
} else {
|
|
if(!nextElementMustBeAtTopOfStack) {
|
|
while(elements.length > 0 && elements[elements.length - 1].tag !== parts[currentPart]) {
|
|
elements.pop();
|
|
}
|
|
}
|
|
if(elements.length === 0 || elements[elements.length - 1].tag !== parts[currentPart]) {
|
|
return false;
|
|
}
|
|
elements.pop();
|
|
nextElementMustBeAtTopOfStack = false;
|
|
}
|
|
currentPart--;
|
|
}
|
|
return true;
|
|
});
|
|
});
|
|
};
|
|
|
|
Slicer.prototype.getBaseTiddlerTitle = function(baseTiddlerTitle) {
|
|
if(baseTiddlerTitle) {
|
|
return baseTiddlerTitle
|
|
} else {
|
|
if(this.sourceTiddlerTitle) {
|
|
return "Sliced up " + this.sourceTiddlerTitle + ":";
|
|
} else {
|
|
return "SlicedTiddler";
|
|
}
|
|
}
|
|
};
|
|
|
|
Slicer.prototype.getSourceText = function() {
|
|
if(this.sourceTiddlerTitle) {
|
|
var tiddler = this.wiki.getTiddler(this.sourceTiddlerTitle);
|
|
if(!tiddler) {
|
|
console.log("Tiddler '" + this.sourceTiddlerTitle + "' does not exist");
|
|
return "";
|
|
}
|
|
if(tiddler.fields.type === "text/html" || tiddler.fields.type === "text/xml" || (tiddler.fields.type || "").slice(-4) === "+xml") {
|
|
return tiddler.fields.text;
|
|
} else {
|
|
return this.getTiddlerAsHtml(tiddler);
|
|
}
|
|
} else {
|
|
return this.sourceText;
|
|
}
|
|
};
|
|
|
|
Slicer.prototype.getTiddlerAsHtml = function(tiddler) {
|
|
var widgetNode = this.wiki.makeTranscludeWidget(tiddler.fields.title,{
|
|
document: $tw.fakeDocument,
|
|
parseAsInline: false,
|
|
importPageMacros: true}),
|
|
container = $tw.fakeDocument.createElement("div");
|
|
widgetNode.render(container,null);
|
|
return ["<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.1//EN\" \"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd\">","<html xmlns=\"http://www.w3.org/1999/xhtml\">","<head>","</head>","<body>",container.innerHTML,"</body>","</html>"].join("\n");
|
|
};
|
|
|
|
|
|
Slicer.prototype.getImmediateParent = function() {
|
|
return this.parentStack.slice(-1)[0];
|
|
};
|
|
|
|
Slicer.prototype.onError = function(e) {
|
|
console.error("Sax error: ", e)
|
|
// Try to resume after errors
|
|
this.sax.error = null;
|
|
this.sax.resume();
|
|
};
|
|
|
|
Slicer.prototype.onOpenNamespace = function(info) {
|
|
this.namespaces[info.prefix] = info.uri;
|
|
};
|
|
|
|
Slicer.prototype.onCloseNamespace = function(info) {
|
|
};
|
|
|
|
Slicer.prototype.onOpenTag = function(node) {
|
|
var actions = this.getMatchingSlicerRuleActions(node.name);
|
|
// Create an anchor if we encounter an ID
|
|
if(node.attributes.id) {
|
|
this.insertPrecedingChunk({
|
|
"toc-type": "anchor",
|
|
"title": this.baseTiddlerTitle + "-anchor-" + node.attributes.id.value
|
|
});
|
|
}
|
|
// Check for an element that should start a new chunk
|
|
if(actions.startNewChunk) {
|
|
// If this is a heading, pop off any higher or equal level headings first
|
|
if(actions.isParent && actions.headingLevel) {
|
|
var parentActions = this.getImmediateParent().actions;
|
|
while(parentActions.isParent && parentActions.headingLevel && parentActions.headingLevel >= actions.headingLevel) {
|
|
this.parentStack.pop();
|
|
parentActions = this.getImmediateParent().actions;
|
|
}
|
|
}
|
|
// Start the new chunk
|
|
this.startNewChunk(actions.startNewChunk);
|
|
// If this is a parent then also add it to the parent stack
|
|
if(actions.isParent) {
|
|
this.parentStack.push({chunk: this.currentChunk, actions: actions});
|
|
}
|
|
}
|
|
// Render the tag inline in the current chunk unless we should ignore it
|
|
if(!actions.dontRenderTag) {
|
|
if(actions.isImage) {
|
|
this.onOpenImage(node);
|
|
} else if(actions.isAnchor) {
|
|
this.onOpenAnchor(node);
|
|
} else {
|
|
var markupInfo = actions.markup && actions.markup[this.outputMode];
|
|
if(markupInfo) {
|
|
this.addTextToCurrentChunk(markupInfo.prefix);
|
|
} else {
|
|
this.addTextToCurrentChunk("<" + node.name + (node.isSelfClosing ? "/" : "") + ">");
|
|
}
|
|
}
|
|
}
|
|
// Remember whether this tag is self closing
|
|
this.elementStack.push({tag: node.name,isSelfClosing: node.isSelfClosing, actions: actions, node: node});
|
|
};
|
|
|
|
Slicer.prototype.onOpenAnchor = function(node) {
|
|
if(node.attributes.href) {
|
|
var value = node.attributes.href.value;
|
|
if(value.indexOf("https://") === 0 || value.indexOf("http://") === 0) {
|
|
// External link
|
|
this.addTextToCurrentChunk("<a href=\"" + value + "\" target=\"_blank\" rel=\"noopener noreferrer\">");
|
|
} else {
|
|
// Internal link
|
|
var parts = value.split("#"),
|
|
base = parts[0],
|
|
hash = parts[1] || "",
|
|
title = $tw.utils.resolvePath(base,this.baseTiddlerTitle) + "-anchor-" + hash;
|
|
this.addTextToCurrentChunk("<$link to=\"" + title + "\">");
|
|
}
|
|
}
|
|
};
|
|
|
|
Slicer.prototype.onCloseAnchor = function(elementInfo) {
|
|
if(elementInfo.node.attributes.href) {
|
|
var value = elementInfo.node.attributes.href.value;
|
|
if(value.indexOf("https://") === 0 || value.indexOf("http://") === 0) {
|
|
// External link
|
|
this.addTextToCurrentChunk("</a>");
|
|
} else {
|
|
// Internal link
|
|
this.addTextToCurrentChunk("</$link>");
|
|
}
|
|
}
|
|
};
|
|
|
|
Slicer.prototype.onOpenImage = function(node) {
|
|
var url = node.attributes.src.value;
|
|
if(url.slice(0,5) === "data:") {
|
|
// var parts = url.slice(5).split(",");
|
|
// this.chunks.push({
|
|
// title: ,
|
|
// text: parts[1],
|
|
// type: parts[0].split[";"][0],
|
|
// role: this.role
|
|
// });
|
|
}
|
|
this.addTextToCurrentChunk("[img[" + $tw.utils.resolvePath(url,this.baseTiddlerTitle) + "]]");
|
|
};
|
|
|
|
Slicer.prototype.onCloseTag = function(name) {
|
|
var e = this.elementStack.pop(),
|
|
actions = e.actions,
|
|
selfClosing = e.isSelfClosing;
|
|
// Set the caption if required
|
|
// TODO
|
|
// if(actions.setCaption) {
|
|
// this.chunks[this.currentChunk].caption = this.chunks[this.currentChunk].title;
|
|
// }
|
|
// Render the tag
|
|
if(actions.isAnchor) {
|
|
this.onCloseAnchor(e);
|
|
} else if (!actions.dontRenderTag && !selfClosing) {
|
|
var markupInfo = actions.markup && actions.markup[this.outputMode];
|
|
if(markupInfo) {
|
|
this.addTextToCurrentChunk(markupInfo.suffix);
|
|
} else {
|
|
this.addTextToCurrentChunk("</" + name + ">");
|
|
}
|
|
}
|
|
// Check for an element that started a new chunk
|
|
if(actions.startNewChunk) {
|
|
if(!actions.mergeNext) {
|
|
this.currentChunk = null;
|
|
}
|
|
// If this is a parent and not a heading then also pop it from the parent stack
|
|
if(actions.isParent && !actions.headingLevel) {
|
|
this.parentStack.pop();
|
|
}
|
|
}
|
|
};
|
|
|
|
Slicer.prototype.onText = function(text) {
|
|
var self = this;
|
|
// Discard the text if we're inside an element with actions.discard set true
|
|
if(this.elementStack.some(function(e) {return e.actions.discard;})) {
|
|
return;
|
|
}
|
|
// Optionally escape common character sequences that might be parsed as wikitext
|
|
text = $tw.utils.htmlEncode(text);
|
|
if(this.escapeWikiText) {
|
|
$tw.utils.each(["[[","{{","__","''","//",",,","^^","~~","`","--","\"\"","@@"],function(str) {
|
|
var replace = str.split("").map(function(c) {
|
|
return "&#" + c.charCodeAt(0) + ";";
|
|
}).join("");
|
|
text = text.replace(new RegExp($tw.utils.escapeRegExp(str),"mg"),replace);
|
|
});
|
|
}
|
|
this.addTextToCurrentChunk(text);
|
|
this.addTextToCurrentChunk(text,"caption");
|
|
};
|
|
|
|
Slicer.prototype.onEnd = function() {
|
|
this.callback(null,this.chunks);
|
|
};
|
|
|
|
Slicer.prototype.addTextToCurrentChunk = function(str,field) {
|
|
field = field || "text";
|
|
if(this.currentChunk === null && str.trim() !== "") {
|
|
this.startNewChunk({
|
|
title: this.makeTitle("paragraph"),
|
|
"toc-type": "paragraph"
|
|
});
|
|
}
|
|
if(this.currentChunk !== null) {
|
|
this.chunks[this.currentChunk][field] += str;
|
|
}
|
|
};
|
|
|
|
Slicer.prototype.startNewChunk = function(fields) {
|
|
var title = fields.title || this.makeTitle(fields["toc-type"]);
|
|
var parentChunk = this.chunks[this.getImmediateParent().chunk];
|
|
this.chunks.push($tw.utils.extend({},{
|
|
title: title,
|
|
text: "",
|
|
caption: "",
|
|
tags: [parentChunk.title],
|
|
list: [],
|
|
role: this.role
|
|
},fields));
|
|
this.currentChunk = this.chunks.length - 1;
|
|
parentChunk.list.push(title);
|
|
};
|
|
|
|
Slicer.prototype.insertPrecedingChunk = function(fields) {
|
|
if(!fields.title) {
|
|
throw "Chunks need a title"
|
|
}
|
|
if(!this.currentChunk) {
|
|
this.startNewChunk(fields);
|
|
this.currentChunk = null;
|
|
} else {
|
|
var parentChunk = this.chunks[this.getImmediateParent().chunk],
|
|
index = this.chunks.length - 1;
|
|
// Insert the new chunk
|
|
this.chunks.splice(index,0,$tw.utils.extend({},{
|
|
text: "",
|
|
caption: "",
|
|
tags: [parentChunk.title],
|
|
list: [],
|
|
role: this.role
|
|
},fields));
|
|
// Adjust the current chunk pointer
|
|
this.currentChunk += 1;
|
|
// Insert a pointer to the new chunk in the parent
|
|
parentChunk.list.splice(parentChunk.list.length - 1,0,fields.title);
|
|
}
|
|
};
|
|
|
|
Slicer.prototype.isBlank = function(s) {
|
|
return (/^[\s\xA0]*$/g).test(s);
|
|
};
|
|
|
|
Slicer.prototype.makeTitle = function(prefix) {
|
|
prefix = prefix || "";
|
|
var count = (this.titleCounts[prefix] || 0) + 1;
|
|
this.titleCounts[prefix] = count;
|
|
return this.baseTiddlerTitle + "-" + prefix + "-" + count;
|
|
};
|
|
|
|
exports.Slicer = Slicer;
|
|
|
|
})();
|