105 lines
2.7 KiB
JavaScript
105 lines
2.7 KiB
JavaScript
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/*jslint node: true */
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'use strict';
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var fs = require('fs');
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var path = require('path');
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var gutil = require('gulp-util');
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var through2 = require('through2');
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var PluginError = gutil.PluginError;
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var utils = require('./lib/utils');
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var compress = require('./lib/compress.js');
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var PLUGIN_NAME = 'gulp-gzip';
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module.exports = function (options) {
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// Combine user defined options with default options
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var defaultConfig = {
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append: true,
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threshold: false,
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gzipOptions: {},
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skipGrowingFiles: false
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};
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var config = utils.merge(defaultConfig, options);
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// Create a through2 object stream. This is our plugin export
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var stream = through2.obj(gulpGzip);
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// Expose the config so we can test it
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stream.config = config;
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function gulpGzip(file, enc, done) {
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/*jshint validthis: true */
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var self = this;
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// Check for empty file
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if (file.isNull()) {
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// Pass along the empty file to the next plugin
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self.push(file);
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done();
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return;
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}
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// Call when finished with compression
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var finished = function(err, contents, wasCompressed) {
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if (err) {
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var error = new PluginError(PLUGIN_NAME, err, { showStack: true });
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self.emit('error', error);
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done();
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return;
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}
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var complete = function() {
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file.contents = contents;
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self.push(file);
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done();
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};
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var getFixedPath = function(filepath) {
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if (config.extension) {
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filepath += '.' + config.extension;
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} else if (config.preExtension) {
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filepath = filepath.replace(/(\.[^\.]+)$/, '.' + config.preExtension + '$1');
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} else if (config.append) {
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filepath += '.gz';
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}
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return filepath;
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};
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if (wasCompressed) {
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if (file.contentEncoding) {
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file.contentEncoding.push('gzip');
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} else {
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file.contentEncoding = [ 'gzip' ];
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}
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file.path = getFixedPath(file.path);
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complete();
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} else if (config.deleteMode) {
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var cwd = path.resolve(config.deleteModeCwd || process.cwd());
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var directory = typeof config.deleteMode === 'string' ? config.deleteMode : config.deleteMode(file);
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var filepath = path.resolve(cwd, directory, getFixedPath(file.relative));
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fs.exists(filepath, function(exists) {
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if(exists) {
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gutil.log(gutil.colors.green('Gzipped file ' + filepath + ' deleted'));
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fs.unlink(filepath, complete);
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} else {
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complete();
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}
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});
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} else {
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complete();
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}
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return;
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};
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compress(file.contents, config, finished);
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}
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return stream;
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};
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