'use strict'
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const normalize = require('normalize-path')
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const debugLog = require('debug')('lint-staged:resolveGitRepo')
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const fs = require('fs')
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const path = require('path')
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const { promisify } = require('util')
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const execGit = require('./execGit')
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const { readFile } = require('./file')
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const fsLstat = promisify(fs.lstat)
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/**
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* Resolve path to the .git directory, with special handling for
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* submodules and worktrees
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*/
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const resolveGitConfigDir = async (gitDir) => {
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const defaultDir = normalize(path.join(gitDir, '.git'))
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const stats = await fsLstat(defaultDir)
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// If .git is a directory, use it
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if (stats.isDirectory()) return defaultDir
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// Otherwise .git is a file containing path to real location
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const file = (await readFile(defaultDir)).toString()
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return path.resolve(gitDir, file.replace(/^gitdir: /, '')).trim()
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}
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/**
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* Resolve git directory and possible submodule paths
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*/
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const resolveGitRepo = async (cwd) => {
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try {
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debugLog('Resolving git repo from `%s`', cwd)
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// Unset GIT_DIR before running any git operations in case it's pointing to an incorrect location
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debugLog('Unset GIT_DIR (was `%s`)', process.env.GIT_DIR)
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delete process.env.GIT_DIR
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debugLog('Unset GIT_WORK_TREE (was `%s`)', process.env.GIT_WORK_TREE)
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delete process.env.GIT_WORK_TREE
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const gitDir = normalize(await execGit(['rev-parse', '--show-toplevel'], { cwd }))
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const gitConfigDir = normalize(await resolveGitConfigDir(gitDir))
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debugLog('Resolved git directory to be `%s`', gitDir)
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debugLog('Resolved git config directory to be `%s`', gitConfigDir)
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return { gitDir, gitConfigDir }
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} catch (error) {
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debugLog('Failed to resolve git repo with error:', error)
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return { error, gitDir: null, gitConfigDir: null }
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}
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}
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module.exports = resolveGitRepo
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