checkout/src/git-directory-helper.ts

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import * as assert from 'assert'
import * as core from '@actions/core'
import * as fs from 'fs'
import * as fsHelper from './fs-helper'
import * as io from '@actions/io'
import * as path from 'path'
import {IGitCommandManager} from './git-command-manager'
export async function prepareExistingDirectory(
git: IGitCommandManager | undefined,
repositoryPath: string,
repositoryUrl: string,
clean: boolean,
ref: string
): Promise<void> {
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assert.ok(repositoryPath, 'Expected repositoryPath to be defined')
assert.ok(repositoryUrl, 'Expected repositoryUrl to be defined')
// Indicates whether to delete the directory contents
let remove = false
// Check whether using git or REST API
if (!git) {
remove = true
}
// Fetch URL does not match
else if (
!fsHelper.directoryExistsSync(path.join(repositoryPath, '.git')) ||
repositoryUrl !== (await git.tryGetFetchUrl())
) {
remove = true
} else {
// Delete any index.lock and shallow.lock left by a previously canceled run or crashed git process
const lockPaths = [
path.join(repositoryPath, '.git', 'index.lock'),
path.join(repositoryPath, '.git', 'shallow.lock')
]
for (const lockPath of lockPaths) {
try {
await io.rmRF(lockPath)
} catch (error) {
core.debug(
`Unable to delete '${lockPath}'. ${(error as any)?.message ?? error}`
)
}
}
try {
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core.startGroup('Removing previously created refs, to avoid conflicts')
// Checkout detached HEAD
if (!(await git.isDetached())) {
await git.checkoutDetach()
}
// Remove all refs/heads/*
let branches = await git.branchList(false)
for (const branch of branches) {
await git.branchDelete(false, branch)
}
// Remove any conflicting refs/remotes/origin/*
// Example 1: Consider ref is refs/heads/foo and previously fetched refs/remotes/origin/foo/bar
// Example 2: Consider ref is refs/heads/foo/bar and previously fetched refs/remotes/origin/foo
if (ref) {
ref = ref.startsWith('refs/') ? ref : `refs/heads/${ref}`
if (ref.startsWith('refs/heads/')) {
const upperName1 = ref.toUpperCase().substr('REFS/HEADS/'.length)
const upperName1Slash = `${upperName1}/`
branches = await git.branchList(true)
for (const branch of branches) {
const upperName2 = branch.substr('origin/'.length).toUpperCase()
const upperName2Slash = `${upperName2}/`
if (
upperName1.startsWith(upperName2Slash) ||
upperName2.startsWith(upperName1Slash)
) {
await git.branchDelete(true, branch)
}
}
}
}
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core.endGroup()
// Check for submodules and delete any existing files if submodules are present
if (!(await git.submoduleStatus())) {
remove = true
core.info('Bad Submodules found, removing existing files')
}
// Clean
if (clean) {
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core.startGroup('Cleaning the repository')
if (!(await git.tryClean())) {
core.debug(
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`The clean command failed. This might be caused by: 1) path too long, 2) permission issue, or 3) file in use. For further investigation, manually run 'git clean -ffdx' on the directory '${repositoryPath}'.`
)
remove = true
} else if (!(await git.tryReset())) {
remove = true
}
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core.endGroup()
if (remove) {
core.warning(
`Unable to clean or reset the repository. The repository will be recreated instead.`
)
}
}
} catch (error) {
core.warning(
`Unable to prepare the existing repository. The repository will be recreated instead.`
)
remove = true
}
}
if (remove) {
// Delete the contents of the directory. Don't delete the directory itself
// since it might be the current working directory.
core.info(`Deleting the contents of '${repositoryPath}'`)
for (const file of await fs.promises.readdir(repositoryPath)) {
await io.rmRF(path.join(repositoryPath, file))
}
}
}