| # Copyright 2014 The Flutter Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| # ---------------------------------- NOTE ---------------------------------- # |
| # |
| # Please keep the logic in this file consistent with the logic in the |
| # `content_aware_hash.sh` script in the same directory to ensure that Flutter |
| # continues to work across all platforms! |
| # |
| # -------------------------------------------------------------------------- # |
| |
| $ErrorActionPreference = "Stop" |
| |
| # When called from a submodule hook; these will override `git -C dir` |
| $env:GIT_DIR = $null |
| $env:GIT_INDEX_FILE = $null |
| $env:GIT_WORK_TREE = $null |
| |
| $progName = Split-Path -parent $MyInvocation.MyCommand.Definition |
| $flutterRoot = (Get-Item $progName).parent.parent.FullName |
| |
| # Cannot use '*' for files in this command |
| # DEPS: tracks third party dependencies related to building the engine |
| # engine: all the code in the engine folder |
| # bin/internal/release-candidate-branch.version: release marker |
| $trackedFiles = "DEPS", "engine", "bin/internal/release-candidate-branch.version" |
| $baseRef = "HEAD" |
| $currentBranch = (git -C "$flutterRoot" rev-parse --abbrev-ref HEAD).Trim() |
| |
| # By default, the content hash is based on HEAD. |
| # For local development branches, we want to base the hash on the merge-base |
| # with the remote tracking branch, so that we don't rebuild the world every |
| # time we make a change to the engine. |
| # |
| # The following conditions are exceptions where we want to use HEAD. |
| # 1. The current branch is a release branch (main, master, stable, beta). |
| # 2. The current branch is a GitHub temporary merge branch. |
| # 3. The current branch is a release candidate branch. |
| # 4. The current checkout is a shallow clone. |
| # 5. There is no current branch. E.g. running on CI/CD. |
| $isShallow = Test-Path -Path (Join-Path "$flutterRoot" ".git/shallow") |
| if (($currentBranch -ne "main") -and |
| ($currentBranch -ne "master") -and |
| ($currentBranch -ne "stable") -and |
| ($currentBranch -ne "beta") -and |
| (-not (($currentBranch -eq "HEAD") -and (-not [string]::IsNullOrEmpty($env:LUCI_CI)))) -and |
| (-not $currentBranch.StartsWith("gh-readonly-queue/master/pr-")) -and |
| (-not ($currentBranch -like "flutter-*-candidate.*")) -and |
| (-not $isShallow)) { |
| |
| # This is a development branch. Find the merge-base. |
| # We will fallback to origin if upstream is not detected. |
| $remote = "origin" |
| $ErrorActionPreference = 'SilentlyContinue' |
| git -C "$flutterRoot" remote get-url upstream *> $null |
| if ($LASTEXITCODE -eq 0) { |
| $remote = "upstream" |
| } |
| |
| # Try to find the merge-base with master, then main. |
| $mergeBase = (git -C "$flutterRoot" merge-base HEAD "$remote/master" 2>$null).Trim() |
| if ([string]::IsNullOrEmpty($mergeBase)) { |
| $mergeBase = (git -C "$flutterRoot" merge-base HEAD "$remote/main" 2>$null).Trim() |
| } |
| $ErrorActionPreference = "Stop" |
| |
| if ($mergeBase) { |
| $baseRef = "$mergeBase" |
| } |
| } |
| |
| # Removing the "cmd" requirement enables powershell usage on other hosts |
| # 1. git ls-tree | Out-String - combines output of pipeline into a single string |
| # rather than an array for each line. |
| # "-NoNewline" not available on PS5.1 and also removes all newlines. |
| # 2. -replace "`r`n", "`n" - removes line endings |
| # NOTE: Out-String adds a new line; so Out-File -NoNewline strips that. |
| # 3. Out-File -NoNewline -Encoding ascii outputs 8bit ascii |
| # 4. git hash-object with stdin from a pipeline consumes UTF-16, so consume |
| #. the contents of hash.txt |
| (git -C "$flutterRoot" ls-tree "$baseRef" -- $trackedFiles | Out-String) -replace "`r`n", "`n" | Out-File -NoNewline -Encoding ascii hash.txt |
| git hash-object hash.txt |
| Remove-Item hash.txt |