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author | Minteck <minteck@phoenixnet.tech> | 2021-10-17 20:08:04 +0200 |
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committer | Minteck <minteck@phoenixnet.tech> | 2021-10-17 20:08:04 +0200 |
commit | 3a94acf27ea1eff8bd1125450f07c0c366332e80 (patch) | |
tree | 5bd619df0b7e04afc174df98736a527477522acb /node_modules/jake/lib/parseargs.js | |
download | wolfeye-js-3a94acf27ea1eff8bd1125450f07c0c366332e80.tar.gz wolfeye-js-3a94acf27ea1eff8bd1125450f07c0c366332e80.tar.bz2 wolfeye-js-3a94acf27ea1eff8bd1125450f07c0c366332e80.zip |
Initial commit
Diffstat (limited to 'node_modules/jake/lib/parseargs.js')
-rw-r--r-- | node_modules/jake/lib/parseargs.js | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/node_modules/jake/lib/parseargs.js b/node_modules/jake/lib/parseargs.js new file mode 100644 index 0000000..1bd24c9 --- /dev/null +++ b/node_modules/jake/lib/parseargs.js @@ -0,0 +1,134 @@ +/* + * Jake JavaScript build tool + * 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 parseargs = {}; +let isOpt = function (arg) { return arg.indexOf('-') === 0 }; +let removeOptPrefix = function (opt) { return opt.replace(/^--/, '').replace(/^-/, '') }; + +/** + * @constructor + * Parses a list of command-line args into a key/value object of + * options and an array of positional commands. + * @ param {Array} opts A list of options in the following format: + * [{full: 'foo', abbr: 'f'}, {full: 'bar', abbr: 'b'}]] + */ +parseargs.Parser = function (opts) { + // A key/value object of matching options parsed out of the args + this.opts = {}; + this.taskNames = null; + this.envVars = null; + + // Data structures used for parsing + this.reg = opts; + this.shortOpts = {}; + this.longOpts = {}; + + let self = this; + [].forEach.call(opts, function (item) { + self.shortOpts[item.abbr] = item; + self.longOpts[item.full] = item; + }); +}; + +parseargs.Parser.prototype = new function () { + + let _trueOrNextVal = function (argParts, args) { + if (argParts[1]) { + return argParts[1]; + } + else { + return (!args[0] || isOpt(args[0])) ? + true : args.shift(); + } + }; + + /** + * Parses an array of arguments into options and positional commands + * @param {Array} args The command-line args to parse + */ + this.parse = function (args) { + let cmds = []; + let cmd; + let envVars = {}; + let opts = {}; + let arg; + let argItem; + let argParts; + let cmdItems; + let taskNames = []; + let preempt; + + while (args.length) { + arg = args.shift(); + + if (isOpt(arg)) { + arg = removeOptPrefix(arg); + argParts = arg.split('='); + argItem = this.longOpts[argParts[0]] || this.shortOpts[argParts[0]]; + if (argItem) { + // First-encountered preemptive opt takes precedence -- no further opts + // or possibility of ambiguity, so just look for a value, or set to + // true and then bail + if (argItem.preempts) { + opts[argItem.full] = _trueOrNextVal(argParts, args); + preempt = true; + break; + } + // If the opt requires a value, see if we can get a value from the + // next arg, or infer true from no-arg -- if it's followed by another + // opt, throw an error + if (argItem.expectValue || argItem.allowValue) { + opts[argItem.full] = _trueOrNextVal(argParts, args); + if (argItem.expectValue && !opts[argItem.full]) { + throw new Error(argItem.full + ' option expects a value.'); + } + } + else { + opts[argItem.full] = true; + } + } + } + else { + cmds.unshift(arg); + } + } + + if (!preempt) { + // Parse out any env-vars and task-name + while ((cmd = cmds.pop())) { + cmdItems = cmd.split('='); + if (cmdItems.length > 1) { + envVars[cmdItems[0]] = cmdItems[1]; + } + else { + taskNames.push(cmd); + } + } + + } + + return { + opts: opts, + envVars: envVars, + taskNames: taskNames + }; + }; + +}; + +module.exports = parseargs; |