怎么编写一个自定义的composer installer_教你编写自定义composer安装器

<?php

namespace YourVendorCustomInstaller;

use ComposerInstallerLibraryInstaller;
use ComposerPackagePackageInterface;
use ComposerRepositoryInstalledRepositoryInterface;

class MyCustomInstaller extends LibraryInstaller
{
    public function supports($packageType)
    {
        return $packageType === 'my-custom-type';
    }

    public function getInstallPath(PackageInterface $package)
    {
        $type = $package->getType();

        $projectDir = $this->composer->getInstallationManager()->getInstallPath(
            $this->composer->getPackage()
        );

        return $projectDir . '/custom-packages/' . $package->getName();
    }
}

{
    "name": "your-vendor/composer-custom-installer",
    "type": "composer-plugin",
    "autoload": {
        "psr-4": {
            "YourVendor\CustomInstaller\": "src/"
        }
    },
    "require": {
        "composer-plugin-api": "^2.0"
    },
    "require-dev": {
        "composer/composer": "^2.0"
    },
    "extra": {
        "class": "YourVendor\CustomInstaller\MyCustomInstaller"
    }
}

{
    "name": "your-vendor/special-package",
    "type": "my-custom-type",
    "require": {
        "php": ">=7.4"
    }
}