42 lines
11 KiB
JSON
42 lines
11 KiB
JSON
{
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"name": "optimist",
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"version": "0.3.7",
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"description": "Light-weight option parsing with an argv hash. No optstrings attached.",
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"main": "./index.js",
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"dependencies": {
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"wordwrap": "~0.0.2"
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},
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"devDependencies": {
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"hashish": "~0.0.4",
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"tap": "~0.4.0"
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},
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"scripts": {
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"test": "tap ./test/*.js"
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},
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"repository": {
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"type": "git",
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"url": "http://github.com/substack/node-optimist.git"
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},
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"keywords": [
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"argument",
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"args",
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"option",
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"parser",
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"parsing",
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"cli",
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"command"
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],
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"author": {
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"name": "James Halliday",
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"email": "mail@substack.net",
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"url": "http://substack.net"
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},
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"license": "MIT/X11",
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"engine": {
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"node": ">=0.4"
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},
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"readme": "optimist\n========\n\nOptimist is a node.js library for option parsing for people who hate option\nparsing. More specifically, this module is for people who like all the --bells\nand -whistlz of program usage but think optstrings are a waste of time.\n\nWith optimist, option parsing doesn't have to suck (as much).\n\n[](http://travis-ci.org/substack/node-optimist)\n\nexamples\n========\n\nWith Optimist, the options are just a hash! No optstrings attached.\n-------------------------------------------------------------------\n\nxup.js:\n\n````javascript\n#!/usr/bin/env node\nvar argv = require('optimist').argv;\n\nif (argv.rif - 5 * argv.xup > 7.138) {\n console.log('Buy more riffiwobbles');\n}\nelse {\n console.log('Sell the xupptumblers');\n}\n````\n\n***\n\n $ ./xup.js --rif=55 --xup=9.52\n Buy more riffiwobbles\n \n $ ./xup.js --rif 12 --xup 8.1\n Sell the xupptumblers\n\n\n\nBut wait! There's more! You can do short options:\n-------------------------------------------------\n \nshort.js:\n\n````javascript\n#!/usr/bin/env node\nvar argv = require('optimist').argv;\nconsole.log('(%d,%d)', argv.x, argv.y);\n````\n\n***\n\n $ ./short.js -x 10 -y 21\n (10,21)\n\nAnd booleans, both long and short (and grouped):\n----------------------------------\n\nbool.js:\n\n````javascript\n#!/usr/bin/env node\nvar util = require('util');\nvar argv = require('optimist').argv;\n\nif (argv.s) {\n util.print(argv.fr ? 'Le chat dit: ' : 'The cat says: ');\n}\nconsole.log(\n (argv.fr ? 'miaou' : 'meow') + (argv.p ? '.' : '')\n);\n````\n\n***\n\n $ ./bool.js -s\n The cat says: meow\n \n $ ./bool.js -sp\n The cat says: meow.\n\n $ ./bool.js -sp --fr\n Le chat dit: miaou.\n\nAnd non-hypenated options too! Just use `argv._`!\n-------------------------------------------------\n \nnonopt.js:\n\n````javascript\n#!/usr/bin/env node\nvar argv = require('optimist').argv;\nconsole.log('(%d,%d)', argv.x, argv.y);\nconsole.log(argv._);\n````\n\n***\n\n $ ./nonopt.js -x 6.82 -y 3.35 moo\n (6.82,3.35)\n [ 'moo' ]\n \n $ ./nonopt.js foo -x 0.54 bar -y 1.12 baz\n (0.54,1.12)\n [ 'foo', 'bar', 'baz' ]\n\nPlus, Optimist comes with .usage() and .demand()!\n-------------------------------------------------\n\ndivide.js:\n\n````javascript\n#!/usr/bin/env node\nvar argv = require('optimist')\n .usage('Usage: $0 -x [num] -y [num]')\n .demand(['x','y'])\n .argv;\n\nconsole.log(argv.x / argv.y);\n````\n\n***\n \n $ ./divide.js -x 55 -y 11\n 5\n \n $ node ./divide.js -x 4.91 -z 2.51\n Usage: node ./divide.js -x [num] -y [num]\n\n Options:\n -x [required]\n -y [required]\n\n Missing required arguments: y\n\nEVEN MORE HOLY COW\n------------------\n\ndefault_singles.js:\n\n````javascript\n#!/usr/bin/env node\nvar argv = require('optimist')\n .default('x', 10)\n .default('y', 10)\n .argv\n;\nconsole.log(argv.x + argv.y);\n````\n\n***\n\n $ ./default_singles.js -x 5\n 15\n\ndefault_hash.js:\n\n````javascript\n#!/usr/bin/env node\nvar argv = require('optimist')\n .default({ x : 10, y : 10 })\n .argv\n;\nconsole.log(argv.x + argv.y);\n````\n\n***\n\n $ ./default_hash.js -y 7\n 17\n\nAnd if you really want to get all descriptive about it...\n---------------------------------------------------------\n\nboolean_single.js\n\n````javascript\n#!/usr/bin/env node\nvar argv = require('optimist')\n .boolean('v')\n .argv\n;\nconsole.dir(argv);\n````\n\n***\n\n $ ./boolean_single.js -v foo bar baz\n true\n [ 'bar', 'baz', 'foo' ]\n\nboolean_double.js\n\n````javascript\n#!/usr/bin/env node\nvar argv = require('optimist')\n .boolean(['x','y','z'])\n .argv\n;\nconsole.dir([ argv.x, argv.y, argv.z ]);\nconsole.dir(argv._);\n````\n\n***\n\n $ ./boolean_double.js -x -z one two three\n [ true, false, true ]\n [ 'one', 'two', 'three' ]\n\nOptimist is here to help...\n---------------------------\n\nYou can describe parameters for help messages and set aliases. Optimist figures\nout how to format a handy help string automatically.\n\nline_count.js\n\n````javascript\n#!/usr/bin/env node\nvar argv = require('optimist')\n .usage('Count the lines in a file.\\nUsage: $0')\n .demand('f')\n .alias('f', 'file')\n .describe('f', 'Load a file')\n .argv\n;\n\nvar fs = require('fs');\nvar s = fs.createReadStream(argv.file);\n\nvar lines = 0;\ns.on('data', function (buf) {\n lines += buf.toString().match(/\\n/g).length;\n});\n\ns.on('end', function () {\n console.log(lines);\n});\n````\n\n***\n\n $ node line_count.js\n Count the lines in a file.\n Usage: node ./line_count.js\n\n Options:\n -f, --file Load a file [required]\n\n Missing required arguments: f\n\n $ node line_count.js --file line_count.js \n 20\n \n $ node line_count.js -f line_count.js \n 20\n\nmethods\n=======\n\nBy itself,\n\n````javascript\nrequire('optimist').argv\n`````\n\nwill use `process.argv` array to construct the `argv` object.\n\nYou can pass in the `process.argv` yourself:\n\n````javascript\nrequire('optimist')([ '-x', '1', '-y', '2' ]).argv\n````\n\nor use .parse() to do the same thing:\n\n````javascript\nrequire('optimist').parse([ '-x', '1', '-y', '2' ])\n````\n\nThe rest of these methods below come in just before the terminating `.argv`.\n\n.alias(key, alias)\n------------------\n\nSet key names as equivalent such that updates to a key will propagate to aliases\nand vice-versa.\n\nOptionally `.alias()` can take an object that maps keys to aliases.\n\n.default(key, value)\n--------------------\n\nSet `argv[key]` to `value` if no option was specified on `process.argv`.\n\nOptionally `.default()` can take an object that maps keys to default values.\n\n.demand(key)\n------------\n\nIf `key` is a string, show the usage information and exit if `key` wasn't\nspecified in `process.argv`.\n\nIf `key` is a number, demand at least as many non-option arguments, which show\nup in `argv._`.\n\nIf `key` is an Array, demand each element.\n\n.describe(key, desc)\n--------------------\n\nDescribe a `key` for the generated usage information.\n\nOptionally `.describe()` can take an object that maps keys to descriptions.\n\n.options(key, opt)\n------------------\n\nInstead of chaining together `.alias().demand().default()`, you can specify\nkeys in `opt` for each of the chainable methods.\n\nFor example:\n\n````javascript\nvar argv = require('optimist')\n .options('f', {\n alias : 'file',\n default : '/etc/passwd',\n })\n .argv\n;\n````\n\nis the same as\n\n````javascript\nvar argv = require('optimist')\n .alias('f', 'file')\n .default('f', '/etc/passwd')\n .argv\n;\n````\n\nOptionally `.options()` can take an object that maps keys to `opt` parameters.\n\n.usage(message)\n---------------\n\nSet a usage message to show which commands to use. Inside `message`, the string\n`$0` will get interpolated to the current script name or node command for the\npresent script similar to how `$0` works in bash or perl.\n\n.check(fn)\n----------\n\nCheck that certain conditions are met in the provided arguments.\n\nIf `fn` throws or returns `false`, show the thrown error, usage information, and\nexit.\n\n.boolean(key)\n-------------\n\nInterpret `key` as a boolean. If a non-flag option follows `key` in\n`process.argv`, that string won't get set as the value of `key`.\n\nIf `key` never shows up as a flag in `process.arguments`, `argv[key]` will be\n`false`.\n\nIf `key` is an Array, interpret all the elements as booleans.\n\n.string(key)\n------------\n\nTell the parser logic not to interpret `key` as a number or boolean.\nThis can be useful if you need to preserve leading zeros in an input.\n\nIf `key` is an Array, interpret all the elements as strings.\n\n.wrap(columns)\n--------------\n\nFormat usage output to wrap at `columns` many columns.\n\n.help()\n-------\n\nReturn the generated usage string.\n\n.showHelp(fn=console.error)\n---------------------------\n\nPrint the usage data using `fn` for printing.\n\n.parse(args)\n------------\n\nParse `args` instead of `process.argv`. Returns the `argv` object.\n\n.argv\n-----\n\nGet the arguments as a plain old object.\n\nArguments without a corresponding flag show up in the `argv._` array.\n\nThe script name or node command is available at `argv.$0` similarly to how `$0`\nworks in bash or perl.\n\nparsing tricks\n==============\n\nstop parsing\n------------\n\nUse `--` to stop parsing flags and stuff the remainder into `argv._`.\n\n $ node examples/reflect.js -a 1 -b 2 -- -c 3 -d 4\n { _: [ '-c', '3', '-d', '4' ],\n '$0': 'node ./examples/reflect.js',\n a: 1,\n b: 2 }\n\nnegate fields\n-------------\n\nIf you want to explicity set a field to false instead of just leaving it\nundefined or to override a default you can do `--no-key`.\n\n $ node examples/reflect.js -a --no-b\n { _: [],\n '$0': 'node ./examples/reflect.js',\n a: true,\n b: false }\n\nnumbers\n-------\n\nEvery argument that looks like a number (`!isNaN(Number(arg))`) is converted to\none. This way you can just `net.createConnection(argv.port)` and you can add\nnumbers out of `argv` with `+` without having that mean concatenation,\nwhich is super frustrating.\n\nduplicates\n----------\n\nIf you specify a flag multiple times it will get turned into an array containing\nall the values in order.\n\n $ node examples/reflect.js -x 5 -x 8 -x 0\n { _: [],\n '$0': 'node ./examples/reflect.js',\n x: [ 5, 8, 0 ] }\n\ndot notation\n------------\n\nWhen you use dots (`.`s) in argument names, an implicit object path is assumed.\nThis lets you organize arguments into nested objects.\n\n $ node examples/reflect.js --foo.bar.baz=33 --foo.quux=5\n { _: [],\n '$0': 'node ./examples/reflect.js',\n foo: { bar: { baz: 33 }, quux: 5 } }\n\ninstallation\n============\n\nWith [npm](http://github.com/isaacs/npm), just do:\n npm install optimist\n \nor clone this project on github:\n\n git clone http://github.com/substack/node-optimist.git\n\nTo run the tests with [expresso](http://github.com/visionmedia/expresso),\njust do:\n \n expresso\n\ninspired By\n===========\n\nThis module is loosely inspired by Perl's\n[Getopt::Casual](http://search.cpan.org/~photo/Getopt-Casual-0.13.1/Casual.pm).\n",
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"_id": "optimist@0.3.7",
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"_from": "optimist@~0.3.5"
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}
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