@zkochan/pnpm/cached_node_modules/ghooks/dist/install.js

A fast implementation of npm install

'use strict';

var fs = require('fs');
var resolve = require('path').resolve;
var findup = require('findup');
var template = require('./hook.template');

var hooks = ['applypatch-msg', 'pre-applypatch', 'post-applypatch', 'pre-commit', 'prepare-commit-msg', 'commit-msg', 'post-commit', 'pre-rebase', 'post-checkout', 'post-merge', 'pre-push', 'pre-receive', 'update', 'post-receive', 'post-update', 'pre-auto-gc', 'post-rewrite'];

function installHooks() {
  var gitRoot = findGitRoot();
  if (gitRoot) {
    var hooksDir = resolve(gitRoot, 'hooks');
    hooks.forEach(install.bind(null, hooksDir));
  } else {
    warnAboutGit();
  }
}

function findGitRoot() {
  try {
    return getGitRoot();
  } catch (e) {
    return null;
  }
}

function getGitRoot() {
  var gitRoot = findup.sync(process.cwd(), '.git');
  var gitPath = resolve(gitRoot, '.git');
  var fileStat = fs.statSync(gitPath);
  return gitPathDir(gitPath, fileStat) || gitPathFile(gitPath, fileStat, gitRoot);
}

function gitPathDir(gitPath, fileStat) {
  return fileStat.isDirectory() ? gitPath : null;
}

function gitPathFile(gitPath, fileStat, gitRoot) {
  return fileStat.isFile() ? parseGitFile(fileStat, gitPath, gitRoot) : null;
}

function parseGitFile(fileStat, gitPath, gitRoot) {
  var gitDirRegex = /[^]{0,}gitdir: ([^\n]{1,})[^]{0,}/;
  var gitFileContents = fs.readFileSync(gitPath, 'utf8');
  if (gitDirRegex.test(gitFileContents)) {
    return resolve(gitRoot, gitFileContents.replace(gitDirRegex, '$1'));
  }
  return null;
}

function warnAboutGit() {
  console.warn( // eslint-disable-line no-console
  'This does not seem to be a git project.\n' + 'Although ghooks was installed, the actual git hooks have not.\n' + 'Run "git init" and then "npm explore ghooks -- npm run install".\n\n' + 'Please ignore this message if you are not using ghooks directly.');
}

function install(dir, hook) {
  ensureDirExists(dir);
  var file = resolve(dir, hook);
  needsBackup(file) && backup(file);
  createExecutableHook(file);
}

function ensureDirExists(dir) {
  fs.existsSync(dir) || fs.mkdirSync(dir);
}

function needsBackup(file) {
  return fs.existsSync(file) && !generatedByGHooks(file);
}

function generatedByGHooks(file) {
  return !!fs.readFileSync(file, 'UTF-8').match(template.generatedMessage);
}

function backup(file) {
  fs.renameSync(file, file + '.bkp');
}

function createExecutableHook(file) {
  fs.writeFileSync(file, template.content);
  fs.chmodSync(file, '755');
}

module.exports = installHooks;