Composer可以在PATH中处理二进制依赖性吗？ [英] Can Composer treat binary dependencies in PATH?

问题描述

我知道作曲家可以确定 php ， hhvm ， ext-< name> 和一些 lib-< name> 依赖关系。在 PATH 上的命令和二进制文件上是否也有可能？实际上，例如，我编写了脚本来确保 Tesseract OCR 存在。可以使用自己的Composer功能吗？

I know that Composer can determine php, hhvm, ext-<name> and some lib-<name> dependencies. Would the same possible over commands and binaries on PATH? Actually, for instance, I wrote scripts to ensure that Tesseract OCR is present. It can be done with own Composer features?

推荐答案

您可以使用Composer钩子来实现，例如 pre-install-cmd 或 pre-update-cmd ，它们执行PHP方法。这是我的测试：

You can achieve this using a Composer hook, like pre-install-cmd or pre-update-cmd, which executes a PHP method. Here is my test:

composer.json

{
  "require": { "pimple/pimple": "*" },
  "autoload": { "psr-0": { "Acme\\": "src/" } }
  "scripts": {
    "pre-install-cmd": "Acme\\Composer\\Hooks::checkBinary",
    "pre-update-cmd": "Acme\\Composer\\Hooks::checkBinary"
  }
}

src / Acme / Composer / Hooks.php

<?php
namespace Acme\Composer;

use Composer\Script\Event;

class Hooks
{
    public static function checkBinary(Event $event) {
        $io = $event->getIO();
        $path = explode(':', getenv('PATH'));
        // do something with $path elements or anything else
        if ($somethingWentWrong) {
            // Throwing an Exception will cause Composer to stop processing.
            throw new \Exception('Check your PATH');
        } else {
            $io->write('checkBinary() completed.');
        }
    }
}

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