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templatizer.js
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templatizer.js
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var jade = require('jade');
var async = require('async');
var beautify = require('./lib/beautify');
var simplifyTemplate = require('./lib/simplifyTemplate');
var transformMixins = require('./lib/transformMixins');
var renameJadeFn = require('./lib/renameJadeFn');
var walkdir = require('walkdir');
var path = require('path');
var util = require('util');
var _ = require('lodash');
var fs = require('fs');
var glob = require('glob');
var minimatch = require('minimatch');
var namedTemplateFn = require('./lib/namedTemplateFn');
var bracketedName = require('./lib/bracketedName');
// Setting dynamicMixins to true will result in
// all mixins being written to the file
function DynamicMixinsCompiler() {
jade.Compiler.apply(this, arguments);
this.dynamicMixins = true;
}
util.inherits(DynamicMixinsCompiler, jade.Compiler);
// Our internal namespace
var NAMESPACE = 'templatizer';
module.exports = function (input, output, options, done) {
var args = arguments;
if (args.length === 3) {
// input, output, done
if (_.isString(args[1]) && _.isFunction(args[2])) {
done = args[2];
options = null;
}
// input, options, done
else if (_.isObject(args[1]) && _.isFunction(args[2])) {
done = args[2];
options = args[1];
output = null;
}
} else if (arguments.length === 2) {
// input, done
if (_.isFunction(args[1])) {
done = args[1];
options = null;
output = null;
}
// input, options
else if (_.isObject(args[1])) {
options = args[1];
done = null;
output = null;
}
}
// Default values for done and options so we dont error
done || (done = function (err, compiledOutput) {
if (err) {
throw err;
} else {
process.stdout.write(compiledOutput);
}
});
options || (options = {});
_.defaults(options, {
transformMixins: false,
jade: {},
globOptions: {}
});
var isWindows = process.platform === 'win32';
var pathSep = path.sep || (isWindows ? '\\' : '/');
var pathSepRegExp = /\/|\\/g;
var jadeCompileOptions = _.extend({
client: true,
compileDebug: false,
pretty: false
}, options.jade);
async.waterfall([
function (cb) {
if (typeof input === "string") {
glob(input, options.globOptions, cb);
} else {
cb(null, input);
}
},
function (matches, cb) {
var directories = _.chain(matches)
.map(function (templateDirectory) {
if (path.extname(templateDirectory).length > 1) {
// Remove filename and ext
return path.dirname(templateDirectory).replace(pathSepRegExp, pathSep);
}
return templateDirectory.replace(pathSepRegExp, pathSep);
})
.uniq()
.value();
if (!directories || directories.length === 0) {
return cb(new Error(input + ' did not match anything existing'));
}
async.each(directories, function (dir, dirDone) {
fs.exists(dir, function (exists) {
if (!exists) {
dirDone(new Error('Template directory ' + dir + ' does not exist.'));
} else {
dirDone(null);
}
});
}, function (err) {
cb(err, err ? null : directories);
});
},
function (directories, cb) {
var folders = [];
var templates = [];
var _readTemplates = [];
var conflicts = [];
async.each(directories, function (dir, dirDone) {
var files = [];
var walker = walkdir(dir);
walker.on('path', function (file) {
files.push(file);
});
walker.on('end', function () {
files.sort();
async.each(files, function (file, done) {
var item = file.replace(path.resolve(dir), '').slice(1);
// Skip hidden files
if (item.charAt(0) === '.' || item.indexOf(pathSep + '.') !== -1) {
return done();
}
// Skip files not matching the initial globbing pattern
if (options.globOptions.ignore) {
var match = function (ignorePattern) {
return minimatch(file, ignorePattern);
};
if (options.globOptions.ignore.some(match)) {
return done();
}
}
if (path.extname(item) === '' && path.basename(item).charAt(0) !== '.') {
if (folders.indexOf(item) === -1) folders.push(item);
} else if (path.extname(item) === '.jade') {
// Store an err if we are about to override a template
if (_readTemplates.indexOf(item) > -1) {
conflicts.push(item + ' from ' + dir + pathSep + item + ' already exists in ' + templates[_readTemplates.indexOf(item)]);
} else {
_readTemplates.push(item);
templates.push(dir + pathSep + item);
}
}
done();
}, function (err) {
if (err) { return dirDone(err); }
if (conflicts.length) {
dirDone(new Error(conflicts.join(', ')));
} else {
dirDone(null);
}
});
});
}, function (err) {
cb(err, { templates: templates, folders: folders, directories: directories });
});
},
function (results, cb) {
var directories = results.directories;
var folders = results.folders;
var templates = results.templates;
var compiledOutput = _.sortBy(folders, function (folder) {
var arr = folder.split(pathSep);
return arr.length;
}).map(function (folder) {
return NAMESPACE + bracketedName(folder.split(pathSep)) + ' = {};';
}).join('\n') + '\n';
async.eachSeries(templates, function (item, readDone) {
fs.readFile(item, { encoding: 'utf-8' }, function (err, rawTemplate) {
if (err) {
readDone(err);
} else {
var name = path.basename(item, '.jade');
var dirString = function () {
var itemTemplateDir = _.find(directories, function (templateDirectory) {
return item.indexOf(templateDirectory + pathSep) === 0;
});
var dirname = path.dirname(item).replace(itemTemplateDir, '');
if (dirname === '.') return name;
dirname += '.' + name;
return dirname.substring(1).replace(pathSepRegExp, '.');
} ();
// If we are transforming mixins then use the dynamic
// compiler so unused mixins are never removed
if (options.transformMixins) {
jadeCompileOptions.compiler = DynamicMixinsCompiler;
}
jadeCompileOptions.filename = item;
var compiledTemplate;
try {
compiledTemplate = jade.compileClient(rawTemplate, jadeCompileOptions);
} catch (e) {
cb(e);
return;
}
var template = beautify(compiledTemplate.toString());
template = renameJadeFn(template, dirString);
template = simplifyTemplate(template);
var mixins = [];
if (options.transformMixins) {
var astResult = transformMixins({
template: template,
name: name,
dir: dirString,
rootName: NAMESPACE
});
mixins = astResult.mixins;
template = astResult.template;
}
compiledOutput += namedTemplateFn({
dir: dirString,
rootName: NAMESPACE,
fn: template
});
compiledOutput += mixins.join('\n');
readDone(null);
}
});
}, function (err) {
cb(err, compiledOutput);
});
}
],
function (err, compiledOutput) {
if (err) {
done(err);
} else {
var commonJSOutput = "var jade = require('@lukekarrys/jade-runtime');\n\n" +
"var " + NAMESPACE + " = {};\n\n" +
compiledOutput + "\n\n" +
"module.exports = " + NAMESPACE + ";\n";
if (output) {
fs.writeFile(output, commonJSOutput, function (fileErr) {
done(fileErr, fileErr ? null : commonJSOutput);
});
} else {
done(null, commonJSOutput);
}
}
});
};