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lipsum(1)
Canonical example for the command module.
Install
npm i -g cli-lipsum
Definition
The lipsum program was configured using this markdown definition file, see lipsum.md for the raw version, check out usage to see the resulting help output from combining the definition with the source.
Source
Code from lipsum.js:
var util = require('util')
, fs = require('fs')
, path = require('path')
, CommandInterface = require('cli-interface').CommandInterface
, cli = require('cli-command')
, help = require('cli-help')
, midcolor = require('cli-mid-color')
, midlogger = require('cli-mid-logger')
, middebug = require('cli-mid-debug')
, midmanual = require('cli-mid-manual')
, convert = require('cli-native')
, formats = help.fmt.formats
, lipsum = '' + fs.readFileSync(path.join(__dirname, 'lipsum.txt'))
, paragraphs = lipsum.split('\n\n')
, list = [null, true, false, 1, -1]
, alignments = ['column', 'line', 'flex', 'wrap']
, stash = {};
// command handlers
function print(info, req, next) {
var keys = require('cli-logger').keys;
var log = this.log;
keys.forEach(function(key) {
log[key]('mock %s message', key);
})
next();
}
function exception(info, req, next) {
next('%s command invoked', [info.cmd.getOptionString(' | ')]);
}
// add mock options and commands (--latin)
function mock() {
this.option('-L, --lorem-ipsum-dolor[=VALUE]', 'Lorem ipsum dolor')
.option('-i, --ipsum [VALUE]', 'Ipsum dolor sit amet')
.option('--mauris-pulvinar, --ut-bibendum=[VALUE]', 'Mauris pulvinar')
.option('-a, --aliquam [VALUE]', paragraphs[2])
var program = this;
paragraphs.forEach(function(para) {
var cmd = para.replace(/\s+.*/, '').trim().toLowerCase();
var desc = para.substr(0, para.indexOf('.') + 1);
program.command(cmd, desc);
})
}
// properties to associate with the commands
// and options loaded from lipsum.md
var options = {
commands: {
print: print,
exception: exception
},
options: {
sort: cli.types.enum(list, true),
format: cli.types.enum(formats),
align: cli.types.enum(alignments),
maximum: cli.types.integer
}
};
var LoremIpsum = function() {
CommandInterface.apply(this, arguments);
}
util.inherits(LoremIpsum, CommandInterface);
LoremIpsum.prototype.configure = function() {
var file = path.join(__dirname, 'lipsum.md');
var conf = {
trace: process.env.NODE_ENV === 'devel',
compiler: {
input: [file],
definition: options
},
manual: {
dir: path.normalize(path.join(__dirname, '..', 'doc', 'man')),
dynamic: true
}
};
var hints = {
values: {
format: formats,
align: alignments,
sort: list,
maximum: [60, 240]
}
}
this
.configure(conf)
//.usage(usage)
//.usage(false)
//.usage(null)
.usage(hints);
}
LoremIpsum.prototype.use = function() {
this
.use(midcolor)
.use(midlogger, null, {level: {}, file: {}})
.use(middebug)
.use(midmanual);
}
LoremIpsum.prototype.on = function() {
this
.once('load', function(req) {
//console.log(this.name());
this.help('-h, --help')
.version();
})
.once('latin', function(req, arg, value) {
mock.call(this);
})
.once('json', function(req, arg, value) {
if(value) {
this.configure().help.style = 'json';
this.configure().help.indent = 2;
}
})
.once('format', function(req, arg, value) {
this.configure().help.style = value;
})
.once('maximum', function(req, arg, value) {
this.configure().help.maximum = parseInt(value);
})
.once('exit', function(req, arg, value) {
this.configure().help.exit = value;
})
.once('collapse', function(req, arg, value) {
this.configure().help.collapse = value;
})
.once('vanilla', function(req, arg, value) {
this.configure().help.vanilla = value;
})
.once('sort', function(req, arg, value) {
this.configure().help.sort = convert.to(value);
})
.once('align', function(req, arg, value) {
this.configure().help.align = value;
})
.on('empty', function(req) {
process.stdout.write(lipsum);
});
}
module.exports = function(pkg) {
return new LoremIpsum(pkg);
}
Usage
This is the help output which is the result of combining the markdown definition with the source code.
Usage: lipsum <command> [-ljcveh] [--color|--no-color]
[--debug] [-l|--latin] [-j|--json] [-c|--collapse]
[-v|--vanilla] [-e|--exit] [-h|--help] [--version]
[--log-level=<level>] [--log-file=<file>]
[-s|--sort=(null|true|false|1|-1)]
[-f|--format=(text|json|markdown|man)]
[-a|--align=(column|line|flex|wrap)]
[-m|--maximum=<60-240>] <args>
Canonical example for the command module.
Commands:
help Show help for commands.
print, p Print some messages using the log middleware.
exception, ex, e Throw an exception.
Options:
-v, --vanilla Disable parameter replacement.
--[no]-color Enable or disable terminal colors.
--log-file=[file]
Redirect to log file.
--debug Enable stack traces.
-l, --latin Include mock lipsum options and commands.
-j, --json Print help as json.
-c, --collapse Collapse whitespace between sections.
--log-level=[level]
Set the log level.
-e, --exit Include exit section from error definitions.
-s, --sort=[value] Alters the help option sort order. Set to null to use
natural order which is likely the order that options were
declared in however this is not guaranteed. Use false for
the default sorting logic which favours options with more
names, use true to sort lexicographically using
Array.prototype.sort. Use 1 to sort by option string length
(determined by the length of the help option string),
reverse the order with -1.
-f, --format=[value]
Set the help output format.
-a, --align=[value]
Alignment style.
-m, --maximum=[value]
Maximum column width.
-h, --help Display this help and exit.
--version Output version information and exit.
Report bugs to muji <noop@xpm.io>.
Screenshot
<p align="center"> <img src="https://raw.github.com/freeformsystems/lipsum/master/doc/img/help.png" /> </p>License
Everything is MIT. Read the license if you feel inclined.
This program was built using the command module, if you care for excellent documentation and write command line interfaces you should check it out.
Generated by mdp(1).