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81 lines
2.6 KiB
PowerShell
81 lines
2.6 KiB
PowerShell
<#
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.SYNOPSIS
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Find a commit on a branch that has the same subject line as a reference commit.
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.DESCRIPTION
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Given a commit SHA (often from a release tag) and a branch name, this script
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resolves the reference commit's subject, then searches the branch history for
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commits with the exact same subject line. Useful when the release tag commit
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is not reachable from your current branch history.
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.PARAMETER Commit
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The reference commit SHA or ref (e.g., v0.96.1 or a full SHA).
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.PARAMETER Branch
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The branch to search (e.g., stable or main). Defaults to stable.
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.PARAMETER RepoPath
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Path to the local repo. Defaults to current directory.
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.EXAMPLE
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pwsh ./find-commit-by-title.ps1 -Commit b62f6421845f7e5c92b8186868d98f46720db442 -Branch stable
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#>
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[CmdletBinding()]
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param(
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[Parameter(Mandatory = $true)][string]$Commit,
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[string]$Branch = "stable",
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[string]$RepoPath = "."
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)
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function Write-Info($msg) { Write-Host $msg -ForegroundColor Cyan }
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function Write-Err($msg) { Write-Host $msg -ForegroundColor Red }
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Push-Location $RepoPath
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try {
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Write-Info "Fetching latest '$Branch' from origin (with tags)..."
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git fetch origin $Branch --tags | Out-Null
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if ($LASTEXITCODE -ne 0) { throw "git fetch origin $Branch --tags failed" }
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$commitSha = (git rev-parse --verify $Commit) 2>$null
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if (-not $commitSha) { throw "Commit '$Commit' not found" }
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$subject = (git show -s --format=%s $commitSha) 2>$null
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if (-not $subject) { throw "Unable to read subject for '$commitSha'" }
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$branchRef = $Branch
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$branchSha = (git rev-parse --verify $branchRef) 2>$null
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if (-not $branchSha) {
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$branchRef = "origin/$Branch"
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$branchSha = (git rev-parse --verify $branchRef) 2>$null
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}
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if (-not $branchSha) { throw "Branch '$Branch' not found" }
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Write-Info "Reference commit: $commitSha"
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Write-Info "Reference title: $subject"
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Write-Info "Searching branch: $branchRef"
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$matches = git log $branchRef --format="%H|%s" | Where-Object { $_ -match '\|' }
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$results = @()
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foreach ($line in $matches) {
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$parts = $line -split '\|', 2
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if ($parts.Count -eq 2 -and $parts[1] -eq $subject) {
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$results += [PSCustomObject]@{ Sha = $parts[0]; Title = $parts[1] }
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}
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}
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if (-not $results -or $results.Count -eq 0) {
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Write-Info "No matching commit found on $branchRef for the given title."
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exit 0
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}
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Write-Info ("Found {0} matching commit(s):" -f $results.Count)
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$results | ForEach-Object { Write-Host ("{0} {1}" -f $_.Sha, $_.Title) }
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}
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catch {
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Write-Err $_
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exit 1
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}
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finally {
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Pop-Location
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}
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