Cscott has uploaded a new change for review.
https://gerrit.wikimedia.org/r/96501
Change subject: Improve documentation comments.
......................................................................
Improve documentation comments.
Change-Id: I767232f1b5b8d5edbb23b8a81f1d7995c84c8b65
---
M lib/index.js
1 file changed, 34 insertions(+), 7 deletions(-)
git pull
ssh://gerrit.wikimedia.org:29418/mediawiki/extensions/Collection/OfflineContentGenerator/latex_renderer
refs/changes/01/96501/1
diff --git a/lib/index.js b/lib/index.js
index c20a009..04e5a51 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -33,6 +33,8 @@
"\\definecolor{linkcolor}{rgb}{.27,0,0}",
"\\definecolor{citecolor}{rgb}{0,0,.27}",
"\\usepackage[colorlinks,breaklinks,allcolors=linkcolor,linkcolor=citecolor]{hyperref}",
+ // Set up Gentium latin fonts
+ // XXX add non-latin (CJK, etc) fonts
"\\setmainfont[",
//"Ligatures = {Common,TeX},",
"Path = " + path.join(__dirname, "..", "fonts") + "/ ,",
@@ -46,8 +48,10 @@
var STD_FOOTER = [
].join("\n");
+// Convert plain text (with HTML whitespace semantics) to an appropriately
+// escaped string for TeX to process.
var texEscape = function(str) {
- // protect special characters
+ // protect TeX special characters
str = str.replace(/[#$&~_^%{}\\]/g, function(c) { return '\\' + c; });
// compress multiple newlines (and use unix-style newlines exclusively)
str = str.replace(/\r\n?/g, '\n').replace(/\n\n+/g, '\n');
@@ -56,6 +60,7 @@
// non-breaking space
str = str.replace(/\xA0/g, '~');
// smart quotes
+ // XXX smart quotes should probably be disabled in some locales
str = str.replace(/(^|\s|\()["](\w)/g, function(match, before, after) {
return before + '\u201C' + after;
}).replace(/(\w|[.,])["](\s|[.,\u2014\)]|$)/g, function(match, before,
after) {
@@ -66,6 +71,8 @@
return str;
};
+// Special predicate for some image templates used on enwiki
+// XXX restrict to enwiki content?
var isMultipleImageTemplate = function(node) {
if (node.getAttribute('typeof') === 'mw:Transclusion') {
try {
@@ -80,6 +87,7 @@
return false;
};
+// Predicate to distinguish 'nonprintable' content.
var isHidden = function(node) {
if (isMultipleImageTemplate(node)) {
return false;
@@ -91,7 +99,8 @@
(node.getAttribute('style') || '')) {
return true;
}
- // bit of a hack: hide infobox / navbox / rellink / dablink
+ // bit of a hack: hide infobox / navbox / rellink / dablink / metadata
+ // XXX restrict to enwiki or localize?
if (['infobox', 'navbox', 'rellink', 'dablink',
'metadata'].some(function(c) {
return node.classList.contains(c);
})) {
@@ -100,6 +109,8 @@
return false;
};
+/* Document node visitor class. Collects LaTeX output as it traverses the
+ * document tree. */
var Visitor = function(document, options) {
this.document = document;
this.options = options;
@@ -108,6 +119,9 @@
this.base = options.base || '';
};
+// Helper function -- collect all text from the children of `node` as
+// HTML non-block/TeX non-paragraph content. Invoke `f` with the result,
+// suitable for inclusion in a TeX non-paragraph context.
Visitor.prototype.collect = function(node, f) {
var o = this.output;
this.output = [];
@@ -123,6 +137,8 @@
return f.call(this, text);
};
+// Generic node visitor. Dispatches to specialized visitors based on
+// element typeof/rel attributes or tag name.
Visitor.prototype.visit = function(node) {
var name = node.nodeName, type = node.nodeType;
switch(type) {
@@ -169,6 +185,7 @@
}
};
+// Generic helper to recurse into the children of the given node.
Visitor.prototype.visitChildren = function(node) {
for (var i = 0, n = node.childNodes.length; i < n; i++) {
this.visit(node.childNodes[i]);
@@ -435,8 +452,11 @@
return this.visitChildren(node);
};
-// return a promise for the latex output (after the bundle has been
-// unpacked and processed)
+// ---------------------------------------------------------------------
+// Bundle, image, and file processing
+
+// return a promise for the builddir and control file contents
+// (after the bundle has been unpacked)
var unpackBundle = function(options) {
var metabook, builddir;
// first create a temporary directory
@@ -474,6 +494,8 @@
});
};
+// return a promise for a map from file resource URLs to on-disk filenames
+// (after image processing / renaming has been done)
var processImages = function(metabook, builddir, options) {
options.log('Processing images');
var imagemap = new Map();
@@ -498,6 +520,7 @@
});
};
+// Return an empty promise after the output.tex file has been written.
var generateLatex = function(metabook, builddir, imagemap, options) {
var output = fs.createWriteStream(path.join(builddir, 'output.tex'), {
encoding: 'utf8'
@@ -539,6 +562,8 @@
return p;
};
+// Return an empty promise after the latex has been either written or
+// compiled to a PDF.
var compileLatex = function(builddir, options) {
options.log('Compiling to PDF with xelatex');
gammalatex.setCompileCommand({
@@ -553,13 +578,13 @@
gammalatex.addRerunIndicator("Package hyperref Warning: Rerun");
var latexOutput = '\\input{' + path.join(builddir, 'output.tex') +
'}\n';
- var deferred = when.defer();
+ var deferred = when.defer(); // this will resolve when writeStream is
closed
var writeStream;
if (options.output) {
writeStream = fs.createWriteStream(options.output);
} else {
// trivially wrap process.stdout so we don't get an error when
- // pipe() tries to close it (stdout can't be closed)
+ // pipe() tries to close it (stdout can't be closed w/o
throwing)
writeStream = new stream.Writable();
writeStream._write = function(chunk, encoding, callback) {
return process.stdout.write(chunk, encoding, callback);
@@ -581,6 +606,8 @@
return deferred.promise;
};
+// Return a promise for an exit status (0 for success) after the bundle
+// specified in the options has been converted.
var convert = function(options) {
var metabook, builddir, imagemap;
return when.resolve().then(function() {
@@ -614,6 +641,6 @@
};
module.exports = {
- version: json.version,
+ version: json.version, // version # for this code
convert: convert
};
--
To view, visit https://gerrit.wikimedia.org/r/96501
To unsubscribe, visit https://gerrit.wikimedia.org/r/settings
Gerrit-MessageType: newchange
Gerrit-Change-Id: I767232f1b5b8d5edbb23b8a81f1d7995c84c8b65
Gerrit-PatchSet: 1
Gerrit-Project:
mediawiki/extensions/Collection/OfflineContentGenerator/latex_renderer
Gerrit-Branch: master
Gerrit-Owner: Cscott <[email protected]>
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