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index.js
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index.js
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"use strict";
var through = require('through'),
gutil = require('gulp-util'),
crypto = require('crypto'),
path = require('path'),
minimatch = require('minimatch'),
slash = require('slash'),
Vinyl = require('vinyl'),
lineBreak = '\n';
function manifest(options) {
var filename, exclude, cache, include, hasher, cwd, contents, timestamp;
options = options || {};
if(options.basePath) {
gutil.log('basePath option is deprecated. Consider using gulp.src base instead: https://github.com/gulpjs/gulp/blob/master/docs/API.md#optionsbase');
}
filename = options.filename || 'app.manifest';
include = Array.prototype.concat(options.include || []);
exclude = Array.prototype.concat(options.exclude || []).concat(include);
cache = Array.prototype.concat(options.cache || []);
hasher = crypto.createHash('sha256');
cwd = process.cwd();
contents = [];
timestamp = options.timestamp || (typeof(options.timestamp) === 'undefined');
contents.push('CACHE MANIFEST');
if (timestamp) {
contents.push('# Time: ' + new Date());
}
if (options.revision) {
contents.push('# Revision: ' + options.revision);
}
contents.push('');
contents.push('CACHE:');
contents = contents.concat(include);
cache.forEach(function (file) {
contents.push(encodeURI(file));
});
function shouldExcludeFile(filePath) {
return exclude.some(minimatch.bind(null, filePath));
}
function writeToManifest(file) {
var prefix, suffix, filepath;
if (file.isNull()) return;
if (file.isStream()) return this.emit('error', new gutil.PluginError('gulp-manifest', 'Streaming not supported'));
prefix = slash(options.prefix || '');
suffix = slash(options.suffix || '');
filepath = slash(file.relative);
if (shouldExcludeFile(filepath)) {
return;
}
if(options.basePath) { // deprecated
var relative = path.relative(file.base, __dirname);
filepath = filepath.replace(new RegExp('^' + path.join(relative, options.basePath)), '');
}
filepath = [prefix, filepath, suffix].join('');
contents.push(encodeURI(filepath));
if (options.hash) {
hasher.update(file.contents, 'binary');
}
}
function endStream() {
// Network section
options.network = options.network || ['*'];
contents.push('');
contents.push('NETWORK:');
options.network.forEach(function (file) {
contents.push(encodeURI(file));
});
// Fallback section
if (options.fallback) {
contents.push('');
contents.push('FALLBACK:');
if (typeof options.fallback === 'string') {
options.fallback = [options.fallback];
}
options.fallback.forEach(function (file) {
var firstSpace = file.indexOf(' ');
if (firstSpace === -1) {
return gutil.log('Invalid format for FALLBACK entry', file);
}
contents.push(
encodeURI(file.substring(0, firstSpace)) +
' ' +
encodeURI(file.substring(firstSpace + 1))
);
});
}
// Settings section
if (options.preferOnline) {
contents.push('');
contents.push('SETTINGS:');
contents.push('prefer-online');
}
// output hash to cache manifest
if (options.hash) {
contents.push('');
contents.push('# hash: ' + hasher.digest("hex"));
}
var manifestFile = new Vinyl({
cwd: cwd,
base: cwd,
path: path.join(cwd, filename),
contents: new Buffer(contents.join(lineBreak))
});
this.emit('data', manifestFile);
this.emit('end');
}
return through(writeToManifest, endStream);
}
module.exports = manifest;