adhocore/cli

Framework agnostic Command Line Interface utilities and helpers for PHP. Build Console App with ease, fun and love.

Command line application made easy
Inspired by nodejs commander (thanks tj)
Zero dependency.
For PHP7 and for good

What's included

Core: Argv parser · Cli application · Shell

IO: Colorizer · Cursor manipulator · Stream writer · Stream reader

Other: Autocompletion

Installation

composer require adhocore/cli

Usage

Argv parser

$command = new Ahc\Cli\Input\Command('rmdir', 'Remove dirs');

$command
    ->version('0.0.1-dev')
    // Arguments are separated by space
    // Format: `<name>` for required, `[name]` for optional
    //  `[name:default]` for default value, `[name...]` for variadic (last argument)
    ->arguments('<dir> [dirs...]')
    // `-h --help`, `-V --version`, `-v --verbosity` options are already added by default.
    // Format: `<name>` for required, `[name]` for optional
    ->option('-s --with-subdir', 'Also delete subdirs (`with` means false by default)')
    ->option('-e,--no-empty', 'Delete empty (`no` means true by default)')
    // Specify santitizer/callback as 3rd param, default value as 4th param
    ->option('-d|--depth [nestlevel]', 'How deep to process subdirs', 'intval', 5)
    ->parse(['thisfile.php', '-sev', 'dir', 'dir1', 'dir2', '-vv']) // `$_SERVER['argv']`
;

// Print all values:
print_r($command->values());

/*Array
(
    [help] =>
    [version] => 0.0.1
    [verbosity] => 3
    [dir] => dir
    [dirs] => Array
        (
            [0] => dir1
            [1] => dir2
        )

    [subdir] => true
    [empty] => false
    [depth] => 5
)*/

// To get values for options except the default ones (help, version, verbosity)
print_r($command->values(false));

// Pick a value by name
$command->dir;   // dir
$command->dirs;  // [dir1, dir2]
$command->depth; // 5

Command help

It can be triggered manually with $command->showHelp() or automatic when -h or --help option is passed to $command->parse().

For above example, the output would be:

Command version

It can be triggered manually with $command->showVersion() or automatic when -V or --version option is passed to $command->parse().

For above example, the output would be:

0.0.1-dev

Console app

Definitely check adhocore/phint - a real world console application made using adhocore/cli.

Here we simulate a git app with limited functionality of add, and checkout. You will see how intuitive, fluent and cheese building a console app is!

Git app

$app = new Ahc\Cli\Application('git', '0.0.1');

$app
    // Register `add` command
    ->command('add', 'Stage changed files', 'a') // alias a
        // Set options and arguments for this command
        ->arguments('<path> [paths...]')
        ->option('-f --force', 'Force add ignored file', 'boolval', false)
        ->option('-N --intent-to-add', 'Add content later but index now', 'boolval', false)
        // Handler for this command: param names should match but order can be anything :)
        ->action(function ($path, $paths, $force, $intentToAdd) {
            array_unshift($paths, $path);

            echo ($intentToAdd ? 'Intent to add ' : 'Add ')
                . implode(', ', $paths)
                . ($force ? ' with force' : '');

            // If you return integer from here, that will be taken as exit error code
        })
        // Done setting up this command for now, tap() to retreat back so we can add another command
        ->tap()
    ->command('checkout', 'Switch branches', 'co') // alias co
        ->arguments('<branch>')
        ->option('-b --new-branch', 'Create a new branch and switch to it', false)
        ->option('-f --force', 'Checkout even if index differs', 'boolval', false)
        ->action(function ($branch, $newBranch, $force) {
            echo 'Checkout to '
                . ($newBranch ? 'new ' . $branch : $branch)
                . ($force ? ' with force' : '');
        })
;

// Parse only parses input but doesnt invoke action
$app->parse(['git', 'add', 'path1', 'path2', 'path3', '-f']);

// Handle will do both parse and invoke action.
$app->handle(['git', 'add', 'path1', 'path2', 'path3', '-f']);
// Will produce: Add path1, path2, path3 with force

$app->handle(['git', 'co', '-b', 'master-2', '-f']);
// Will produce: Checkout to new master-2 with force

Organized app

Instead of inline commands/actions, we define and add our own commands (having interact() and execute()) to the app:

class InitCommand extends Ahc\Cli\Input\Command
{
    public function __construct()
    {
        parent::__construct('init', 'Init something');

        $this
            ->argument('<arrg>', 'The Arrg')
            ->argument('[arg2]', 'The Arg2')
            ->option('-a --apple', 'The Apple')
            ->option('-b --ball', 'The ball')
            // Usage examples:
            ->usage(
                // append details or explanation of given example with ` ## ` so they will be uniformly aligned when shown
                '<bold>  init</end> <comment>--apple applet --ball ballon <arggg></end> ## details 1<eol/>' .
                // $0 will be interpolated to actual command name
                '<bold>  $0</end> <comment>-a applet -b ballon <arggg> [arg2]</end> ## details 2<eol/>'
            );
    }

    // This method is auto called before `self::execute()` and receives `Interactor $io` instance
    public function interact(Ahc\Cli\IO\Interactor $io)
    {
        // Collect missing opts/args
        if (!$this->apple) {
            $this->set('apple', $io->prompt('Enter apple'));
        }

        if (!$this->ball) {
            $this->set('ball', $io->prompt('Enter ball'));
        }

        // ...
    }

    // When app->handle() locates `init` command it automatically calls `execute()`
    // with correct $ball and $apple values
    public function execute($ball, $apple)
    {
        $io = $this->app()->io();

        $io->write('Apple ' . $apple, true);
        $io->write('Ball ' . $ball, true);

        // more codes ...

        // If you return integer from here, that will be taken as exit error code
    }
}

class OtherCommand extends Ahc\Cli\Input\Command
{
    // ...
}

// Init App with name and version
$app = new Ahc\Cli\Application('App', 'v0.0.1');

// Add commands with optional aliases`
$app->add(new InitCommand, 'i');
$app->add(new OtherCommand, 'o');

// Set logo
$app->logo('Ascii art logo of your app');

$app->handle($_SERVER['argv']); // if argv[1] is `i` or `init` it executes InitCommand

App help

It can be triggered manually with $app->showHelp() or automatic when -h or --help option is passed to $app->parse(). Note If you pass something like ['app', cmd', '-h'] to $app->parse() it will automatically and instantly show you help of that cmd and not the $app.

For above example, the output would be:

App version

Same version number is passed to all attached Commands. So you can trigger version on any of the commands.

Shell

Very thin shell wrapper that provides convenience methods around proc_open().

Basic usage

$shell = new Ahc\Cli\Helper\Shell($command = 'php -v', $rawInput = null);

// Waits until proc finishes
$shell->execute($async = false); // default false

echo $shell->getOutput(); // PHP version string (often with zend/opcache info)

Advanced usage

$shell = new Ahc\Cli\Helper\Shell('php /some/long/running/scipt.php');

// With async flag, doesnt wait for proc to finish!
$shell->setOptions($workDir = '/home', $envVars = [])
    ->execute($async = true)
    ->isRunning(); // true

// Force stop anytime (please check php.net/proc_close)
$shell->stop(); // also closes pipes

// Force kill anytime (please check php.net/proc_terminate)
$shell->kill();

Timeout

$shell = new Ahc\Cli\Helper\Shell('php /some/long/running/scipt.php');

// Wait for at most 10.5 seconds for proc to finish!
// If it doesnt complete by then, throws exception
$shell->setOptions($workDir, $envVars, $timeout = 10.5)->execute();

// And if it completes within timeout, you can access the stdout/stderr
echo $shell->getOutput();
echo $shell->getErrorOutput();

Cli Interaction

You can perform user interaction like printing colored output, reading user input programatically and moving the cursors around with provided Ahc\Cli\IO\Interactor.

$interactor = new Ahc\Cli\IO\Interactor;

// For mocking io:
$interactor = new Ahc\Cli\IO\Interactor($inputPath, $outputPath);

Confirm

$confirm = $interactor->confirm('Are you happy?', 'n'); // Default: n (no)
$confirm // is a boolean
    ? $interactor->greenBold('You are happy :)', true)  // Output green bold text
    : $interactor->redBold('You are sad :(', true);     // Output red bold text

Single choice

$fruits = ['a' => 'apple', 'b' => 'banana'];
$choice = $interactor->choice('Select a fruit', $fruits, 'b');
$interactor->greenBold("You selected: {$fruits[$choice]}", true);

Multiple choices

$fruits  = ['a' => 'apple', 'b' => 'banana', 'c' => 'cherry'];
$choices = $interactor->choices('Select fruit(s)', $fruits, ['b', 'c']);
$choices = \array_map(function ($c) use ($fruits) { return $fruits[$c]; }, $choices);
$interactor->greenBold('You selected: ' . implode(', ', $choices), true);

Prompt free input

$any = $interactor->prompt('Anything', rand(1, 100)); // Random default
$interactor->greenBold("Anything is: $any", true);

Prompt with validation

$nameValidator = function ($value) {
    if (\strlen($value) < 5) {
        throw new \InvalidArgumentException('Name should be atleast 5 chars');
    }

    return $value;
};

// No default, Retry 5 more times
$name = $interactor->prompt('Name', null, $nameValidator, 5);
$interactor->greenBold("The name is: $name", true);

Prompt hidden

On windows platform, it may change the fontface which can be fixed.

$passValidator = function ($pass) {
    if (\strlen($pass) < 6) {
        throw new \InvalidArgumentException('Password too short');
    }

    return $pass;
};

$pass = $interactor->promptHidden('Password', $passValidator, 2);

IO Components

The interactor is composed of Ahc\Cli\Input\Reader and Ahc\Cli\Output\Writer while the Writer itself is composed of Ahc\Cli\Output\Color. All these components can be used standalone.

Color

Color looks cool!

$color = new Ahc\Cli\Output\Color;

Simple usage

echo $color->warn('This is warning');
echo $color->info('This is info');
echo $color->error('This is error');
echo $color->comment('This is comment');
echo $color->ok('This is ok msg');

Custom style

Ahc\Cli\Output\Color::style('mystyle', [
    'bg' => Ahc\Cli\Output\Color::CYAN,
    'fg' => Ahc\Cli\Output\Color::WHITE,
    'bold' => 1, // You can experiment with 0, 1, 2, 3 ... as well
]);

echo $color->mystyle('My text');

Cursor

Move cursor around, erase line up or down, clear screen.

$cursor = new Ahc\Cli\Output\Cursor;

echo  $cursor->up(1)
    . $cursor->down(2)
    . $cursor->right(3)
    . $cursor->left(4)
    . $cursor->next(0)
    . $cursor->prev(2);
    . $cursor->eraseLine()
    . $cursor->clear()
    . $cursor->clearUp()
    . $cursor->clearDown()
    . $cursor->moveTo(5, 8); // x, y

Writer

Write anything in style.

$writer = new Ahc\Cli\Output\Writer;

// All writes are forwarded to STDOUT
// But if you specify error, then to STDERR
$writer->errorBold('This is error');

Output formatting

You can call methods composed of any combinations: '<colorName>', 'bold', 'bg', 'fg', 'warn', 'info', 'error', 'ok', 'comment' ... in any order (eg: bgRedFgBlaock, boldRed, greenBold, commentBgPurple and so on ...)

$writer->bold->green->write('It is bold green');
$writer->boldGreen('It is bold green'); // Same as above
$writer->comment('This is grayish comment', true); // True indicates append EOL character.
$writer->bgPurpleBold('This is white on purple background');

Free style

Many colors with one single call: wrap text with tags <method> and </end> For NL/EOL just use <eol> or </eol> or <eol/>.

Great for writing long colorful texts for example command usage info.

$writer->colors('<red>This is red</end><eol><bgGreen>This has bg Green</end>');

Raw output

$writer->raw('Enter name: ');

Tables

Just pass array of assoc arrays. The keys of first array will be taken as heading. Heading is auto inflected to human readable capitalized words (ucwords).

$writer->table([
    ['a' => 'apple', 'b-c' => 'ball', 'c_d' => 'cat'],
    ['a' => 'applet', 'b-c' => 'bee', 'c_d' => 'cute'],
]);

Gives something like:

+--------+------+------+
| A      | B C  | C D  |
+--------+------+------+
| apple  | ball | cat  |
| applet | bee  | cute |
+--------+------+------+

Designing table look and feel

Just pass 2nd param $styles:

$writer->table([
    ['a' => 'apple', 'b-c' => 'ball', 'c_d' => 'cat'],
    ['a' => 'applet', 'b-c' => 'bee', 'c_d' => 'cute'],
], [
    // for => styleName (anything that you would call in $writer instance)
    'head' => 'boldGreen', // For the table heading
    'odd'  => 'bold',      // For the odd rows (1st row is odd, then 3, 5 etc)
    'even' => 'comment',   // For the even rows (2nd row is even, then 4, 6 etc)
]);

// 'head', 'odd', 'even' are all the styles for now
// In future we may support styling a column by its name!

Reader

Read and pre process user input.

$reader = new Ahc\Cli\Input\Reader;

// No default, callback fn `ucwords()`
$reader->read(null, 'ucwords');

// Default 'abc', callback `trim()`
$reader->read('abc', 'trim');

// Read at most first 5 chars
// (if ENTER is pressed before 5 chars then further read is aborted)
$reader->read('', 'trim', 5);

// Read but dont echo back the input
$reader->readHidden($default, $callback);

// Read from piped stream (or STDIN) if available without waiting
$reader->readPiped();

// Pass in a callback for if STDIN is empty
// The callback recieves $reader instance and MUST return string
$reader->readPiped(function ($reader) {
    // Wait to read a line!
    return $reader->read();

    // Wait to read multi lines (until Ctrl+D pressed)
    return $reader->readAll();
});

Exceptions

Whenever an exception is caught by Application::handle(), it will show a beautiful stack trace and exit with non 0 status code.

Autocompletion

Any console applications that are built on top of adhocore/cli can entertain autocomplete of commands and options in zsh shell with oh-my-zsh.

All you have to do is add one line to the end of ~/.oh-my-zsh/custom/plugins/ahccli/ahccli.plugin.zsh:

compdef _ahccli <appname>

Example: compdef _ahccli phint for phint.

That is cumbersome to perform manually, here's a complete command you can copy/paste/run:

One time setup

mkdir -p ~/.oh-my-zsh/custom/plugins/ahccli && cd ~/.oh-my-zsh/custom/plugins/ahccli

[ -f ./ahccli.plugin.zsh ] || curl -sSLo ./ahccli.plugin.zsh https://raw.githubusercontent.com/adhocore/php-cli/master/ahccli.plugin.zsh

chmod 760 ./ahccli.plugin.zsh && cd -

Load ahccli plugin

This is also one time setup.

# Open .zshrc
nano ~/.zshrc

# locate plugins=(... ...) and add ahccli
plugins=(git ... ... ahccli)

# ... then save it (Ctrl + O)

Registering app

# replace appname with real name eg: phint
echo compdef _ahccli appname >> ~/.oh-my-zsh/custom/plugins/ahccli/ahccli.plugin.zsh

Of course you can add multiple apps, just change appname in above command

Then either restart the shell or source the plugin like so:

source ~/.oh-my-zsh/custom/plugins/ahccli/ahccli.plugin.zsh

Trigger autocomplete

appname <tab>            # autocompletes commands               (phint <tab>)
appname subcommand <tab> # autocompletes options for subcommand (phint init <tab>)

Related

adhocore/phalcon-ext · Phalcon extension using adhocore/cli
adhocore/phint · PHP project scaffolding app using adhocore/cli
adhocore/type-hinter · Auto PHP7 typehinter tool using adhocore/cli

Contributors

License

© 2017-2020, Jitendra Adhikari | MIT

Credits

This project is release managed by please.

License

daemonu/php-cli

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