Subversion-Projekte lars-tiefland.laravel_shop

<?php

namespace Illuminate\Database\Migrations;

use Closure;

use Illuminate\Filesystem\Filesystem;

use Illuminate\Support\Str;

use InvalidArgumentException;

class MigrationCreator

{

    /**

     * The filesystem instance.

     *

     * @var \Illuminate\Filesystem\Filesystem

     */

    protected $files;

    /**

     * The custom app stubs directory.

     *

     * @var string

     */

    protected $customStubPath;

    /**

     * The registered post create hooks.

     *

     * @var array

     */

    protected $postCreate = [];

    /**

     * Create a new migration creator instance.

     *

     * @param  \Illuminate\Filesystem\Filesystem  $files

     * @param  string  $customStubPath

     * @return void

     */

    public function __construct(Filesystem $files, $customStubPath)

    {

        $this->files = $files;

        $this->customStubPath = $customStubPath;

    }

    /**

     * Create a new migration at the given path.

     *

     * @param  string  $name

     * @param  string  $path

     * @param  string|null  $table

     * @param  bool  $create

     * @return string

     *

     * @throws \Exception

     */

    public function create($name, $path, $table = null, $create = false)

    {

        $this->ensureMigrationDoesntAlreadyExist($name, $path);

        // First we will get the stub file for the migration, which serves as a type

        // of template for the migration. Once we have those we will populate the

        // various place-holders, save the file, and run the post create event.

        $stub = $this->getStub($table, $create);

        $path = $this->getPath($name, $path);

        $this->files->ensureDirectoryExists(dirname($path));

        $this->files->put(

            $path, $this->populateStub($stub, $table)

        );

        // Next, we will fire any hooks that are supposed to fire after a migration is

        // created. Once that is done we'll be ready to return the full path to the

        // migration file so it can be used however it's needed by the developer.

        $this->firePostCreateHooks($table, $path);

        return $path;

    }

    /**

     * Ensure that a migration with the given name doesn't already exist.

     *

     * @param  string  $name

     * @param  string  $migrationPath

     * @return void

     *

     * @throws \InvalidArgumentException

     */

    protected function ensureMigrationDoesntAlreadyExist($name, $migrationPath = null)

    {

        if (! empty($migrationPath)) {

            $migrationFiles = $this->files->glob($migrationPath.'/*.php');

            foreach ($migrationFiles as $migrationFile) {

                $this->files->requireOnce($migrationFile);

            }

        }

        if (class_exists($className = $this->getClassName($name))) {

            throw new InvalidArgumentException("A {$className} class already exists.");

        }

    }

    /**

     * Get the migration stub file.

     *

     * @param  string|null  $table

     * @param  bool  $create

     * @return string

     */

    protected function getStub($table, $create)

    {

        if (is_null($table)) {

            $stub = $this->files->exists($customPath = $this->customStubPath.'/migration.stub')

                            ? $customPath

                            : $this->stubPath().'/migration.stub';

        } elseif ($create) {

            $stub = $this->files->exists($customPath = $this->customStubPath.'/migration.create.stub')

                            ? $customPath

                            : $this->stubPath().'/migration.create.stub';

        } else {

            $stub = $this->files->exists($customPath = $this->customStubPath.'/migration.update.stub')

                            ? $customPath

                            : $this->stubPath().'/migration.update.stub';

        }

        return $this->files->get($stub);

    }

    /**

     * Populate the place-holders in the migration stub.

     *

     * @param  string  $stub

     * @param  string|null  $table

     * @return string

     */

    protected function populateStub($stub, $table)

    {

        // Here we will replace the table place-holders with the table specified by

        // the developer, which is useful for quickly creating a tables creation

        // or update migration from the console instead of typing it manually.

        if (! is_null($table)) {

            $stub = str_replace(

                ['DummyTable', '{{ table }}', '{{table}}'],

                $table, $stub

            );

        }

        return $stub;

    }

    /**

     * Get the class name of a migration name.

     *

     * @param  string  $name

     * @return string

     */

    protected function getClassName($name)

    {

        return Str::studly($name);

    }

    /**

     * Get the full path to the migration.

     *

     * @param  string  $name

     * @param  string  $path

     * @return string

     */

    protected function getPath($name, $path)

    {

        return $path.'/'.$this->getDatePrefix().'_'.$name.'.php';

    }

    /**

     * Fire the registered post create hooks.

     *

     * @param  string|null  $table

     * @param  string  $path

     * @return void

     */

    protected function firePostCreateHooks($table, $path)

    {

        foreach ($this->postCreate as $callback) {

            $callback($table, $path);

        }

    }

    /**

     * Register a post migration create hook.

     *

     * @param  \Closure  $callback

     * @return void

     */

    public function afterCreate(Closure $callback)

    {

        $this->postCreate[] = $callback;

    }

    /**

     * Get the date prefix for the migration.

     *

     * @return string

     */

    protected function getDatePrefix()

    {

        return date('Y_m_d_His');

    }

    /**

     * Get the path to the stubs.

     *

     * @return string

     */

    public function stubPath()

    {

        return __DIR__.'/stubs';

    }

    /**

     * Get the filesystem instance.

     *

     * @return \Illuminate\Filesystem\Filesystem

     */

    public function getFilesystem()

    {

        return $this->files;

    }

}