#!/usr/bin/env node
|
|
|
'use strict';
|
|
/*eslint-disable no-console*/
|
|
|
// stdlib
|
var fs = require('fs');
|
|
|
// 3rd-party
|
var argparse = require('argparse');
|
|
|
// internal
|
var yaml = require('..');
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
var cli = new argparse.ArgumentParser({
|
prog: 'js-yaml',
|
version: require('../package.json').version,
|
addHelp: true
|
});
|
|
|
cli.addArgument([ '-c', '--compact' ], {
|
help: 'Display errors in compact mode',
|
action: 'storeTrue'
|
});
|
|
|
// deprecated (not needed after we removed output colors)
|
// option suppressed, but not completely removed for compatibility
|
cli.addArgument([ '-j', '--to-json' ], {
|
help: argparse.Const.SUPPRESS,
|
dest: 'json',
|
action: 'storeTrue'
|
});
|
|
|
cli.addArgument([ '-t', '--trace' ], {
|
help: 'Show stack trace on error',
|
action: 'storeTrue'
|
});
|
|
cli.addArgument([ 'file' ], {
|
help: 'File to read, utf-8 encoded without BOM',
|
nargs: '?',
|
defaultValue: '-'
|
});
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
var options = cli.parseArgs();
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
function readFile(filename, encoding, callback) {
|
if (options.file === '-') {
|
// read from stdin
|
|
var chunks = [];
|
|
process.stdin.on('data', function (chunk) {
|
chunks.push(chunk);
|
});
|
|
process.stdin.on('end', function () {
|
return callback(null, Buffer.concat(chunks).toString(encoding));
|
});
|
} else {
|
fs.readFile(filename, encoding, callback);
|
}
|
}
|
|
readFile(options.file, 'utf8', function (error, input) {
|
var output, isYaml;
|
|
if (error) {
|
if (error.code === 'ENOENT') {
|
console.error('File not found: ' + options.file);
|
process.exit(2);
|
}
|
|
console.error(
|
options.trace && error.stack ||
|
error.message ||
|
String(error));
|
|
process.exit(1);
|
}
|
|
try {
|
output = JSON.parse(input);
|
isYaml = false;
|
} catch (err) {
|
if (err instanceof SyntaxError) {
|
try {
|
output = [];
|
yaml.loadAll(input, function (doc) { output.push(doc); }, {});
|
isYaml = true;
|
|
if (output.length === 0) output = null;
|
else if (output.length === 1) output = output[0];
|
|
} catch (e) {
|
if (options.trace && err.stack) console.error(e.stack);
|
else console.error(e.toString(options.compact));
|
|
process.exit(1);
|
}
|
} else {
|
console.error(
|
options.trace && err.stack ||
|
err.message ||
|
String(err));
|
|
process.exit(1);
|
}
|
}
|
|
if (isYaml) console.log(JSON.stringify(output, null, ' '));
|
else console.log(yaml.dump(output));
|
});
|
