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PowerShell 脚本比较两文件差异（带粗狂进度条）并汇总输出

news 2025/8/1 20:06:29

一上来就放代码

function Compare-FileHex {param ([Parameter(Mandatory=$true)][string]$SourceFile,[Parameter(Mandatory=$true)][string]$CompareFile,[Parameter(Mandatory=$false)][string]$OutputFile,[Parameter(Mandatory=$false)][int]$BufferSize = 1MB)function Format-FileSize {param ([long]$Size)if ($Size -ge 1GB) { "{0:N2} GB" -f ($Size / 1GB) }elseif ($Size -ge 1MB) { "{0:N2} MB" -f ($Size / 1MB) }elseif ($Size -ge 1KB) { "{0:N2} KB" -f ($Size / 1KB) }else { "$Size Bytes" }}$sourceStream = [System.IO.File]::OpenRead($SourceFile)$compareStream = [System.IO.File]::OpenRead($CompareFile)$results = New-Object System.Collections.Generic.List[PSCustomObject]$buffer1 = New-Object byte[] $BufferSize$buffer2 = New-Object byte[] $BufferSize$totalLength = [Math]::Max($sourceStream.Length, $compareStream.Length)$position = 0$sourceSize = $sourceStream.Length$compareSize = $compareStream.Lengthtry {while ($position -lt $totalLength) {$read1 = $sourceStream.Read($buffer1, 0, $BufferSize)$read2 = $compareStream.Read($buffer2, 0, $BufferSize)$maxRead = [Math]::Max($read1, $read2)for ($i = 0; $i -lt $maxRead; $i++) {$sourceByte = if ($i -lt $read1) { $buffer1[$i] } else { $null }$compareByte = if ($i -lt $read2) { $buffer2[$i] } else { $null }if ($sourceByte -ne $compareByte) {$results.Add([PSCustomObject]@{Address = $position + $iSourceFile = if ($sourceByte -ne $null) { "{0:X2}" -f $sourceByte } else { "--" }CompareFile = if ($compareByte -ne $null) { "{0:X2}" -f $compareByte } else { "--" }})}}$position += $maxRead$percentComplete = [math]::Round(($position / $totalLength) * 100, 2)Write-Progress -Activity "比较文件" -Status "$percentComplete% 完成" -PercentComplete $percentComplete}}finally {$sourceStream.Close()$compareStream.Close()}Write-Progress -Activity "比较文件" -Completed$sourceSizeFormatted = Format-FileSize -Size $sourceSize$compareSizeFormatted = Format-FileSize -Size $compareSize$summary = @"
源文件：$SourceFile
大小: $sourceSizeFormatted比较文件：$CompareFile
大小: $compareSizeFormatted不同之处: $($results.Count) 字节
详细如下："@$detailedOutput = "地址       源文件    比较文件`n"$detailedOutput += "--------------------------`n"$lastAddress = -1foreach ($result in $results) {if ($lastAddress -ne -1 -and $result.Address -ne $lastAddress + 1) {$detailedOutput += "`n"  # 添加空行表示不连续}$detailedOutput += "0x{0:X8}  {1}        {2}`n" -f $result.Address, $result.SourceFile, $result.CompareFile$lastAddress = $result.Address}$fullOutput = $summary + $detailedOutputif ($OutputFile) {$fullOutput | Out-File -FilePath $OutputFile -Encoding utf8Write-Host "结果已保存到: $OutputFile"}Write-Host $fullOutput
}

2、调用

假设您将函数保存在名为 Compare-FileHex.ps1 的文件中。在您想要使用这个函数的其他 PowerShell 脚本中，您可以这样导入和使用它：

导入 Compare-FileHex 函数 . "C:\Path\To\Compare-FileHex.ps1"
现在您可以使用这个函数了 Compare-FileHex -SourceFile "path\to\source\file" -CompareFile "path\to\compare\file" -OutputFile "path\to\output.txt"

3、效果（gif 随便看了。渣画质）