adhocore/cli

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, PHP8 and for good

What's included

Core: Argv parser · Cli application · Shell

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

Other: Autocompletion

Installation

# PHP8.0 and above v1.0.0
composer require adhocore/cli:^v1.0.0

# PHP 7.x
composer require adhocore/cli:^v0.9.0

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');

        $help = '<cyan>Custom help screen</end>';
        $writer = new Ahc\Cli\Output\Writer();

        $this
            ->argument('<arrg>', 'The Arrg')
            ->argument('[arg2]', 'The Arg2')
            ->option('-a --apple', 'The Apple')
            ->option('-b --ball', 'The ball')
            ->help($writer->colorizer()->colors($help))
            // 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/>'
            )
            ->logo('Ascii art logo of your command');
    }

    // This method is auto called before `self::execute()` and receives `Interactor $io` instance
    public function interact(Ahc\Cli\IO\Interactor $io) : void
    {
        // Collect missing opts/args
        if (!$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
{
    public function __construct()
    {
        parent::__construct('other', 'Other something');
    }

    public function execute()
    {
        $io = $this->app()->io();

        $io->write('Other command');

        // more codes ...

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

// 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');

// Custom help screen
$app->help('Custom help screen (if omitted one will be generated)');

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

Grouping commands

Grouped commands are listed together in commands list. Explicit grouping a command is optional. By default if a command name has a colon : then the part before it is taken as a group, else * is taken as a group.

Example: command name app:env has a default group app, command name appenv has group *.

// Add grouped commands:
$app->group('Configuration', function ($app) {
    $app->add(new ConfigSetCommand);
    $app->add(new ConfigListCommand);
});

// Alternatively, set group one by one in each commands:
$app->add((new ConfigSetCommand)->inGroup('Config'));
$app->add((new ConfigListCommand)->inGroup('Config'));
...

Default command

By default, running your CLI app without any arguments will show the help screen. However you can set the default action to run one of your commands either by setting the third parameter of the add function to true or by using the defaultCommand function.

$app->add(new InitCommand, 'i', true);

// Alternatively
$app->command('init', 'Init something', 'i');
$app->defaultCommand('init');

// Retrieve the name of the default command
$default_command = $app->getDefaultCommand();

Exception handler

Set a custom exception handler as callback. The callback receives exception & exit code. The callback may rethrow exception or may exit the program or just log exception and do nothing else.

$app = new Ahc\Cli\Application('App', 'v0.0.1');
$app->add(...);
$app->onException(function (Throwable $e, int $exitCode) {
    // send to sentry
    // write to logs

    // optionally, exit with exit code:
    exit($exitCode);

    // or optionally rethrow, a rethrown exception is propagated to top layer caller.
    throw $e;
})->handle($argv);

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::fg256(57), // 256 colors can be used as well
    'bold' => 1, // You can experiment with 0, 1, 2, 3 ... as well
]);

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

Built-in styles

There are a number of pre-defined built-in styles that allows you granular customization to different output conditions such as help and prompts:

• answer
• choice
• comment
• error
• help_category
• help_description_even
• help_description_odd
• help_example
• help_footer
• help_group
• help_header
• help_item_even
• help_item_odd
• help_summary
• help_text
• info
• logo
• ok
• question
• version
• warn

Overriding a built-in style works the same way as defining a new style:

Ahc\Cli\Output\Color::style('error', [
    'fg' => Ahc\Cli\Output\Color::RED,
    'bold' => 1,
]);

Disable colors

Ahc\Cli\Output\Color::$enabled = false;

Colors will be automatically disabled if the NO_COLOR environment variable is set to true.

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

Progress Bar

Easily add a progress bar to your output:

$progress = new Ahc\Cli\Output\ProgressBar(100);
for ($i = 0; $i <= 100; $i++) {
    $progress->current($i);

    // Simulate something happening
    usleep(80000);
}

You can also manually advance the bar:

$progress = new Ahc\Cli\Output\ProgressBar(100);

// Do something

$progress->advance(); // Adds 1 to the current progress

// Do something

$progress->advance(10); // Adds 10 to the current progress

// Do something

$progress->advance(5, 'Still going.'); // Adds 5, displays a label

You can override the progress bar options to customize it to your liking:

$progress = new Ahc\Cli\Output\ProgressBar(100);
$progress->option('pointer', '>>');
$progress->option('loader', '▩');

// You can set the progress fluently
$progress->option('pointer', '>>')->option('loader', '▩');

// You can also use an associative array to set many options in one time
$progress->option([
    'pointer' => '>>',
    'loader'  => '▩'
]);

// Available options
+---------------+------------------------------------------------------+---------------+
| Option        | Description                                          | Default value |
+===============+======================================================+===============+
| pointer       | The progress bar head symbol                         | >             |
| loader        | The loader symbol                                    | =             |
| color         | The color of progress bar                            | white         |
| labelColor    | The text color of the label                          | white         |
| labelPosition | The position of the label (top, bottom, left, right) | bottom        |
+---------------+------------------------------------------------------+---------------+

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)
    '1:1'  => 'red',       // For cell in row 1 col 1 (1 based count, 'apple' in this example)
    '2:*'  => '',          // For all cells in row 2 (1 based count)
    '*:2'  => '',          // For all cells in col 2 (1 based count)
    'b-c'  => '',          // For all columns named 'b-c' (same as '*:2' in this example)
    '*:*'  => 'blue',      // For all cells in table (Set all cells to blue)
]);

You can define the style of a cell dynamically using a callback. You could then apply one style or another depending on a value.

$rows = [
    ['name' => 'John Doe', 'age' => '30'],
    ['name' => 'Jane Smith', 'age' => '25'],
    ['name' => 'Bob Johnson', 'age' => '40'],
];

$styles = [
    '*:2' => function ($val, $row) {
        return $row['age'] >= 30 ? 'boldRed' : '';
    },
];

$writer->table($rows, $styles);

The example above only processes the cells in the second column of the table. If you want to process any cell, you can use the *:* key. You could then customise each cell in the table

$rows = [
    ['name' => 'John Doe', 'age' => '30'],
    ['name' => 'Jane Smith', 'age' => '25'],
    ['name' => 'Alice Bob', 'age' => '10'],
    ['name' => 'Big Johnson', 'age' => '40'],
    ['name' => 'Jane X', 'age' => '50'],
    ['name' => 'John Smith', 'age' => '20'],
    ['name' => 'Bob John', 'age' => '28'],
];

$styles = [
    '*:*' => function ($val, $row) {
        if ($val === 'Jane X') {
            return 'yellow';
        }
        if ($val == 10 || $val == 20) {
            return 'boldPurple';
        }
        if (str_contains($val, 'Bob')) {
            return 'blue';
        }
        return $row['age'] >= 30 ? 'boldRed' : '';
    },
];

$writer->table($rows, $styles);

Note: Priority in increasing order:

• odd or even
• 2:* (row)
• *:2 or b-c <-> column name (col)
• *:* any cell in table
• 1:1 (cell) = highest priority

Justify content (Display setting)

If you want to display certain configurations (from your .env file for example) a bit like Laravel does (via the php artisan about command) you can use the justify method.

$writer->justify('Environment');
$writer->justify('PHP Version', PHP_VERSION);
$writer->justify('App Version', '1.0.0');
$writer->justify('Locale', 'en');

Gives something like:

Environment ........................................
PHP Version .................................. 8.1.4
App Version .................................. 1.0.0
Locale .......................................... en

You can use the sep parameter to define the separator to use.

$writer->justify('Environment', '', ['sep' => '-']);
$writer->justify('PHP Version', PHP_VERSION);

Gives something like:

Environment ----------------------------------------
PHP Version .................................. 8.1.4

In addition, the text color, the background color and the thickness of the two texts can be defined via the 3rd argument of this method.

$writer->justify('Cache Enable', 'true', [
    'first' => ['fg' => Ahc\Cli\Output\Color::CYAN], // style of the key
    'second' => ['fg' => Ahc\Cli\Output\Color::GREEN], // style of the value
]);
$writer->justify('Debug Mode', 'false', [
    'first' => ['fg' => Ahc\Cli\Output\Color::CYAN], // style of the key
    'second' => ['fg' => Ahc\Cli\Output\Color::RED], // style of the value
]);

For more details regarding the different color options, see Custom style

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.

I18n Support

adhocore/cli also supports internationalisation. This is particularly useful if you are not very comfortable with English or if you are creating a framework or CLI application that could be used by people from a variety of backgrounds.

By default, all the texts generated by our system are in English. But you can easily modify them by defining your translations as follows

\Ahc\Application::addLocale('fr', [
    'Only last argument can be variadic' => 'Seul le dernier argument peut être variadique',
], true);

You can also change the default English text to make the description more explicit if you wish.

\Ahc\Application::addLocale('en', [
    'Show help' => 'Shows helpful information about a command',
]);

you can find all the translation keys supported by the package in this gist : https://gist.github.com/dimtrovich/1597c16d5c74334e68eef15a4e7ba3fd

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

• adhocore
• sushilgupta

License

© 2017-2020, Jitendra Adhikari | MIT

Credits

This project is release managed by please.