'use strict';
var path = require('path'),
utils = require('../utils');
module.exports = exec;
/**
* Discovers all the options required to run the script
* and if a custom exec has been passed in, then it will
* also try to work out what extensions to monitor and
* whether there's a special way of running that script.
*
* @param {Object} nodemonOptions
* @param {Object} execMap
* @return {Object} new and updated version of nodemonOptions
*/
function exec(nodemonOptions, execMap) {
if (!execMap) {
execMap = {};
}
var options = utils.clone(nodemonOptions || {}),
script = path.basename(options.script || ''),
scriptExt = path.extname(script).slice(1),
extension = options.ext || scriptExt || 'js',
execDefined = !!options.exec;
// strip any leading periods int he extension
Iif (extension.indexOf('.') === 0) {
extension = extension.slice(1);
}
// allows the user to simplify cli usage: https://github.com/remy/nodemon/issues/195
// but always give preference to the user defined argument
if (!options.exec && execMap[scriptExt] !== undefined) {
options.exec = execMap[scriptExt];
execDefined = true;
}
if (options.exec === undefined) {
options.exec = 'node';
} else {
// allow variable substitution for {{filename}} and {{pwd}}
options.exec = (options.exec || '').replace(/\{\{(filename|pwd)\}\}/, function (all, m) {
Eif (m === 'filename') {
return script || '';
} else if (m === 'pwd') {
return process.cwd() || '';
}
return all;
});
}
options.execArgs = [];
if (options.exec.indexOf(' ') !== -1) {
var execOptions = options.exec.split(' ');
options.exec = execOptions.splice(0, 1)[0];
options.execArgs = execOptions;
}
if (options.exec === 'node' && options.nodeArgs && options.nodeArgs.length) {
options.execArgs = options.execArgs.concat(options.nodeArgs);
}
// note: indexOf('coffee') handles both .coffee and .litcoffee
if (!execDefined && options.exec === 'node' && scriptExt.indexOf('coffee') !== -1) {
options.exec = 'coffee';
// ensure that we call: `coffee --nodejs ...`
Iif (options.execArgs === undefined) {
options.execArgs = [];
}
// if there's a leading argument to the exec that starts with `--` then
// it could be --debug or --debug-brk or something else intended for node
// so we'll add the --nodejs switch.
if ((options.args || []).join(' ').indexOf('--') === 0) {
options.execArgs.unshift('--nodejs');
}
}
if (options.exec === 'coffee') {
// don't override user specified extension tracking
Eif (!options.ext) {
extension = 'coffee litcoffee js';
}
// because windows can't find 'coffee', it needs the real file 'coffee.cmd'
Iif (utils.isWindows) {
options.exec += '.cmd';
}
}
// allow users to make a mistake on the extension to monitor
// converts js,jade => .js$|.jade$
// and 'js jade' => .js$|.jade$
// BIG NOTE: user can't do this: nodemon -e *.js
// because the terminal will automatically expand the glob against
// the file system :(
if (extension.indexOf(' ') !== -1 ||
extension.indexOf(',') !== -1 ||
extension.indexOf('*.') !== -1) {
extension = extension.replace(/\s+/g, '|') // convert spaces to pipes
.replace(/,/g, '|') // convert commas to pipes
.split('|') // split on those pipes
.map(function (item) {
return item.replace(/^[\*\.]+/, ''); // remove "*."
}).join(','); // return regexp string like: .js$|.jade$
}
// this final part ensures both multiple extension and
// single extensions work
// extension += '$';
options.ext = extension;
options.env = {};
// make sure it's an object (and since we don't have )
if (({}).toString.apply(nodemonOptions.env) === '[object Object]') {
options.env = utils.clone(nodemonOptions.env);
} else Iif (nodemonOptions.env !== undefined) {
throw new Error('nodemon env values must be an object: { PORT: 8000 }');
}
return options;
} |