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#!/usr/bin/env node
var optimist = require('optimist')
.usage('Precompile handlebar templates.\nUsage: $0 template...', {
'f': {
'type': 'string',
'description': 'Output File',
'alias': 'output'
},
'k': {
'type': 'string',
'description': 'Known helpers',
'alias': 'known'
},
'o': {
'type': 'boolean',
'description': 'Known helpers only',
'alias': 'knownOnly'
},
'm': {
'type': 'boolean',
'description': 'Minimize output',
'alias': 'min'
},
's': {
'type': 'boolean',
'description': 'Output template function only.',
'alias': 'simple'
},
'r': {
'type': 'string',
'description': 'Template root. Base value that will be stripped from template names.',
'alias': 'root'
}
})
.check(function(argv) {
var template = [0];
if (!argv._.length) {
throw 'Must define at least one template or directory.';
}
argv._.forEach(function(template) {
try {
fs.statSync(template);
} catch (err) {
throw 'Unable to open template file "' + template + '"';
}
});
})
.check(function(argv) {
if (argv.simple && argv.min) {
throw 'Unable to minimze simple output';
}
if (argv.simple && (argv._.length !== 1 || fs.statSync(argv._[0]).isDirectory())) {
throw 'Unable to output multiple templates in simple mode';
}
});
var fs = require('fs'),
handlebars = require('../lib/handlebars'),
basename = require('path').basename,
uglify = require('uglify-js');
var argv = optimist.argv,
template = argv._[0];
// Convert the known list into a hash
var known = {};
if (argv.known && !Array.isArray(argv.known)) {
argv.known = [argv.known];
}
if (argv.known) {
for (var i = 0, len = argv.known.length; i < len; i++) {
known[argv.known[i]] = true;
}
}
var output = [];
if (!argv.simple) {
output.push('(function() {\n var template = Handlebars.template, templates = Handlebars.templates = Handlebars.templates || {};\n');
}
function processTemplate(template, root) {
var path = template,
stat = fs.statSync(path);
if (stat.isDirectory()) {
fs.readdirSync(template).map(function(file) {
var path = template + '/' + file;
if (/\.handlebars$/.test(path) || fs.statSync(path).isDirectory()) {
processTemplate(path, root || template);
}
});
} else {
var data = fs.readFileSync(path, 'utf8');
var options = {
knownHelpers: known,
knownHelpersOnly: argv.o
};
// Clean the template name
if (!root) {
template = basename(template);
} else if (template.indexOf(root) === 0) {
template = template.substring(root.length+1);
}
template = template.replace(/\.handlebars$/, '');
if (argv.simple) {
output.push(handlebars.precompile(data, options) + '\n');
} else {
output.push('templates[\'' + template + '\'] = template(' + handlebars.precompile(data, options) + ');\n');
}
}
}
argv._.forEach(function(template) {
processTemplate(template, argv.root);
});
// Output the content
if (!argv.simple) {
output.push('})();');
}
output = output.join('');
if (argv.min) {
var ast = uglify.parser.parse(output);
ast = uglify.uglify.ast_mangle(ast);
ast = uglify.uglify.ast_squeeze(ast);
output = uglify.uglify.gen_code(ast);
}
if (argv.output) {
fs.writeFileSync(argv.output, output, 'utf8');
} else {
console.log(output);
}
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