Scripted replacement of Copyright notices in source

Scripted replacement of Copyright notices in source

Due to a transfer of copyright ownership from Citrix to Cloud Software Group,
the copyright notices in all source files should be updated.

Using the powershell script below replace "Copyright (c) Citrix Systems, Inc."
with "Copyright (c) Xen Project." and "Copyright (c) Cloud Software Group, Inc."

NOTE: src/xen/vcpu.c was not changed, as copyright is assigned to Amazon.com, Inc.

Function Multiline-Replace {
    param(
        [string]$Filename,
        [string]$ToReplace,
        [array]$ReplaceWith
    )

    $content = Get-Content $Filename
    $replace = $false
    $output = ""
    $content | ForEach {
        $line = $_
        if ($line.Contains($ToReplace)) {
            $replace = $true
            $ReplaceWith | ForEach {
                $output += $line.Replace($ToReplace, $_) + "`n"
            }
        } else {
            $output += $line + "`n"
        }
    }
    if ($replace) {
        Write-Host "Replacing: " $Filename
        $output | Set-Content $Filename
    } else {
        Write-Host "Ignoring:  " $Filename
    }
}

Function Replace-Filestrings {
    param(
        [array]$FilleTypes,
        [string]$ToReplace,
        [array]$Replacements,
        [array]$ExcludeList
    )

    $FileTypes | ForEach {
        Get-ChildItem $_ -Recurse | ForEach-Object {
            $filename = $_
            if (($ExcludeList | %{ $filename -Like $_ }) -Contains $True) {
                Write-Host "Excluding: " $filename
            } else {
                Multiline-Replace $_ $ToReplace $Replacements
            }
        }
    }
}

$ExcludeList = @("*include\xen\*", "*\obj\*")
$Replace = "Copyright (c) Citrix Systems Inc."

$Replacements = @("/* Copyright (c) Xen Project.", " * Copyright (c) Cloud Software Group, Inc.")
$FileTypes = @("*.c", "*.h", "*.rc")
Replace-Filestrings $FileTypes ('/* ' + $Replace) $Replacements $ExcludeList

$Replacements = @("; // Copyright (c) Xen Project.", "; // Copyright (c) Cloud Software Group, Inc.")
$FileTypes = @("*.mc")
Replace-Filestrings $FileTypes ('; // ' + $Replace) $Replacements $ExcludeList

$Replacements = @("; Copyright (c) Xen Project.", "; Copyright (c) Cloud Software Group, Inc.")
$FileTypes = @("*.inf", "*.def")
Replace-Filestrings $FileTypes ('; ' + $Replace) $Replacements $ExcludeList

$Replacements = @("Copyright (c) Xen Project.", "Copyright (c) Cloud Software Group, Inc.")
$FileTypes = @("LICENSE")
Replace-Filestrings $FileTypes $Replace $Replacements $ExcludeList

Signed-off-by: Owen Smith <owen.smith@citrix.com>
Amended commit comment. Fixed whitespace.

Signed-off-by: Paul Durrant <paul@xen.org>