dach/node_modules/ejs/bin/cli.js

212 lines
4.6 KiB
JavaScript
Executable File

#!/usr/bin/env node
/*
* EJS Embedded JavaScript templates
* Copyright 2112 Matthew Eernisse (mde@fleegix.org)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
let path = require('path');
let program = require('jake').program;
delete global.jake; // NO NOT WANT
program.setTaskNames = function (n) { this.taskNames = n; };
let ejs = require('../lib/ejs');
let { hyphenToCamel } = require('../lib/utils');
let fs = require('fs');
let args = process.argv.slice(2);
let usage = fs.readFileSync(`${__dirname}/../usage.txt`).toString();
const CLI_OPTS = [
{ full: 'output-file',
abbr: 'o',
expectValue: true,
},
{ full: 'data-file',
abbr: 'f',
expectValue: true,
},
{ full: 'data-input',
abbr: 'i',
expectValue: true,
},
{ full: 'delimiter',
abbr: 'm',
expectValue: true,
passThrough: true,
},
{ full: 'open-delimiter',
abbr: 'p',
expectValue: true,
passThrough: true,
},
{ full: 'close-delimiter',
abbr: 'c',
expectValue: true,
passThrough: true,
},
{ full: 'strict',
abbr: 's',
expectValue: false,
allowValue: false,
passThrough: true,
},
{ full: 'no-with',
abbr: 'n',
expectValue: false,
allowValue: false,
},
{ full: 'locals-name',
abbr: 'l',
expectValue: true,
passThrough: true,
},
{ full: 'rm-whitespace',
abbr: 'w',
expectValue: false,
allowValue: false,
passThrough: true,
},
{ full: 'debug',
abbr: 'd',
expectValue: false,
allowValue: false,
passThrough: true,
},
{ full: 'help',
abbr: 'h',
passThrough: true,
},
{ full: 'version',
abbr: 'V',
passThrough: true,
},
// Alias lowercase v
{ full: 'version',
abbr: 'v',
passThrough: true,
},
];
let preempts = {
version: function () {
program.die(ejs.VERSION);
},
help: function () {
program.die(usage);
}
};
let stdin = '';
process.stdin.setEncoding('utf8');
process.stdin.on('readable', () => {
let chunk;
while ((chunk = process.stdin.read()) !== null) {
stdin += chunk;
}
});
function run() {
program.availableOpts = CLI_OPTS;
program.parseArgs(args);
let templatePath = program.taskNames[0];
let pVals = program.envVars;
let pOpts = {};
for (let p in program.opts) {
let name = hyphenToCamel(p);
pOpts[name] = program.opts[p];
}
let opts = {};
let vals = {};
// Same-named 'passthrough' opts
CLI_OPTS.forEach((opt) => {
let optName = hyphenToCamel(opt.full);
if (opt.passThrough && typeof pOpts[optName] != 'undefined') {
opts[optName] = pOpts[optName];
}
});
// Bail out for help/version
for (let p in opts) {
if (preempts[p]) {
return preempts[p]();
}
}
// Ensure there's a template to render
if (!templatePath) {
throw new Error('Please provide a template path. (Run ejs -h for help)');
}
if (opts.strict) {
pOpts.noWith = true;
}
if (pOpts.noWith) {
opts._with = false;
}
// Grab and parse any input data, in order of precedence:
// 1. Stdin
// 2. CLI arg via -i
// 3. Data file via -f
// Any individual vals passed at the end (e.g., foo=bar) will override
// any vals previously set
let input;
let err = new Error('Please do not pass data multiple ways. Pick one of stdin, -f, or -i.');
if (stdin) {
input = stdin;
}
else if (pOpts.dataInput) {
if (input) {
throw err;
}
input = decodeURIComponent(pOpts.dataInput);
}
else if (pOpts.dataFile) {
if (input) {
throw err;
}
input = fs.readFileSync(pOpts.dataFile).toString();
}
if (input) {
vals = JSON.parse(input);
}
// Override / set any individual values passed from the command line
for (let p in pVals) {
vals[p] = pVals[p];
}
opts.filename = path.resolve(process.cwd(), templatePath);
let template = fs.readFileSync(opts.filename).toString();
let output = ejs.render(template, vals, opts);
if (pOpts.outputFile) {
fs.writeFileSync(pOpts.outputFile, output);
}
else {
process.stdout.write(output);
}
process.exit();
}
// Defer execution so that stdin can be read if necessary
setImmediate(run);