forked from enviPath/enviPy
102 lines
2.5 KiB
JavaScript
102 lines
2.5 KiB
JavaScript
'use strict';
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var path = require('path');
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var Stream = require('readable-stream');
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var gutil = require('gulp-util');
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var BufferStreams = require('bufferstreams');
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var ttf2woff2 = require('ttf2woff2');
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var PLUGIN_NAME = 'gulp-ttf2woff2';
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// File level transform function
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function ttf2woff2Transform() {
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// Return a callback function handling the buffered content
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return function ttf2woff2TransformCb(err, buf, cb) {
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// Handle any error
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if(err) {
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return cb(new gutil.PluginError(PLUGIN_NAME, err, { showStack: true }));
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}
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// Use the buffered content
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try {
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buf = ttf2woff2(buf);
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return cb(null, buf);
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} catch(err2) {
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return cb(new gutil.PluginError(PLUGIN_NAME, err2, { showStack: true }));
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}
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};
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}
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// Plugin function
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function ttf2woff2Gulp(options) {
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var stream = new Stream.Transform({ objectMode: true });
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options = options || {};
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options.ignoreExt = options.ignoreExt || false;
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options.clone = options.clone || false;
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stream._transform = function ttf2woff2GulpTransform(file, unused, done) {
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var cntStream;
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var newFile;
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// When null just pass through
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if(file.isNull()) {
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stream.push(file); done();
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return;
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}
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// If the ext doesn't match, pass it through
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if((!options.ignoreExt) && '.ttf' !== path.extname(file.path)) {
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stream.push(file); done();
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return;
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}
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// Fix for the vinyl clone method...
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// https://github.com/wearefractal/vinyl/pull/9
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if(options.clone) {
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if(file.isBuffer()) {
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stream.push(file.clone());
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} else {
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cntStream = file.contents;
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file.contents = null;
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newFile = file.clone();
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file.contents = cntStream.pipe(new Stream.PassThrough());
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newFile.contents = cntStream.pipe(new Stream.PassThrough());
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stream.push(newFile);
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}
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}
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file.path = gutil.replaceExtension(file.path, '.woff2');
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// Buffers
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if(file.isBuffer()) {
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try {
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file.contents = ttf2woff2(file.contents);
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} catch(err) {
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stream.emit('error', new gutil.PluginError(PLUGIN_NAME, err, {
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showStack: true,
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}));
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}
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// Streams
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} else {
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file.contents = file.contents.pipe(new BufferStreams(ttf2woff2Transform()));
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}
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stream.push(file);
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done();
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};
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return stream;
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}
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// Export the file level transform function for other plugins usage
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ttf2woff2Gulp.fileTransform = ttf2woff2Transform;
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// Export the plugin main function
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module.exports = ttf2woff2Gulp;
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