60 lines
1.8 KiB
JavaScript
60 lines
1.8 KiB
JavaScript
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var through = require('through');
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var path = require('path');
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var gutil = require('gulp-util');
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var PluginError = gutil.PluginError;
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var File = gutil.File;
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var Buffer = require('buffer').Buffer;
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var Concat = require('concat-with-sourcemaps');
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module.exports = function(file, opt) {
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if (!file) throw new PluginError('gulp-concat', 'Missing file option for gulp-concat');
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if (!opt) opt = {};
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// to preserve existing |undefined| behaviour and to introduce |newLine: ""| for binaries
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if (typeof opt.newLine !== 'string') opt.newLine = gutil.linefeed;
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var firstFile = null;
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var fileName = file;
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if (typeof file !== 'string') {
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if (typeof file.path !== 'string') {
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throw new PluginError('gulp-concat', 'Missing path in file options for gulp-concat');
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}
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fileName = path.basename(file.path);
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firstFile = new File(file);
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}
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var concat = null;
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function bufferContents(file) {
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if (file.isNull()) return; // ignore
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if (file.isStream()) return this.emit('error', new PluginError('gulp-concat', 'Streaming not supported'));
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if (!firstFile) firstFile = file;
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if (!concat) concat = new Concat(!!firstFile.sourceMap || !!file.sourceMap, fileName, opt.newLine);
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concat.add(file.relative, file.contents.toString(), file.sourceMap);
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}
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function endStream() {
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if (firstFile) {
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var joinedFile = firstFile;
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if (typeof file === 'string') {
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joinedFile = firstFile.clone({contents: false});
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joinedFile.path = path.join(firstFile.base, file);
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}
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joinedFile.contents = new Buffer(concat.content);
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if (concat.sourceMapping)
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joinedFile.sourceMap = JSON.parse(concat.sourceMap);
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this.emit('data', joinedFile);
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}
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this.emit('end');
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}
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return through(bufferContents, endStream);
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};
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