PwSh.Fw.OS

0.1.0-pre8

Libraries/OS.Debian/OS.Debian.psm1

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 $Script:NS = (get-item $PSCommandPath).basename

<#
.SYNOPSIS
Get Debian-based OS architecture
 
.DESCRIPTION
 
 
.PARAMETER Online
Specify you want to get the archtiecture of the running OS. It is equivalent of specifying -Root /
 
.PARAMETER Root
Specify to inquire the OS located at the specified mountpoint
 
.EXAMPLE
Get-OSArch -Online
 
.EXAMPLE
Get-OSArch -Root /mnt/sda3
 
.NOTES
 
#>

function Get-OSArch {
    [CmdletBinding()][OutputType([String])]Param (
        [switch]$Online,
        [string]$Root = "/"
    )
    Begin {
        Write-EnterFunction
    }

    Process {
        if ($Online) { $Root = '/' }

        if (fileExist "$Root/var/lib/dpkg/arch") {
            $x86 = Get-Content "$Root/var/lib/dpkg/arch" | Select-String "^i386$"
            $x64 = Get-Content "$Root/var/lib/dpkg/arch" | Select-String "^amd64$"
            $arm32 = Get-Content "$Root/var/lib/dpkg/arch" | Select-String "^armhf$"
            $arm64 = Get-Content "$Root/var/lib/dpkg/arch" | Select-String "^arm64$"
        } elseif (fileExist "$Root/var/lib/dpkg/status") {
            $x86 = Get-Content "$Root/var/lib/dpkg/status" | Select-String "^Architecture: i386" | Select-Object -First 1
            $x64 = Get-Content "$Root/var/lib/dpkg/status" | Select-String "^Architecture: amd64" | Select-Object -First 1
            $arm32 = Get-Content "$Root/var/lib/dpkg/status" | Select-String "^Architecture: armhf" | Select-Object -First 1
            $arm64 = Get-Content "$Root/var/lib/dpkg/status" | Select-String "^Architecture: arm64" | Select-Object -First 1
        }

        if ($x86) {    $arch = "x86" }
        if ($x64) {    $arch = "x64" }
        if ($arm32) {    $arch = "arm32" }
        if ($arm64) {    $arch = "arm64" }

        return $arch
    }

    End {
        Write-LeaveFunction
    }
}

function Get-OSPackagesList {
    [CmdletBinding()][OutputType([Hashtable])]Param (
        [switch]$Online,
        [string]$Root = "/"
    )
    Begin {
        Write-EnterFunction
    }

    Process {
        if ($Online) { $Root = '' }
        $File = "$Root/var/lib/dpkg/status"
        # $aPackages = @()
        $hPackages = @{}
        # get a raw string (not an array of strings)
        $status = Get-Content $File -Raw
        # extract each paragraph to a single match
        $aStatus = $status | select-string -pattern '(?sm)^Package: .*?^$' -AllMatches
        ForEach ($m in $aStatus.Matches) {
            # extract paragraphs one-by-one
            $sPackage = $m.Value
            # escape offending \[a-z] characters
            $sPackage = $sPackage -replace '(?sm)\\', '\\\\'
            # convert multilines to a single line with '\n' chars
            $sPackage = $sPackage -replace '(?sm)\r?\n ', '\n '
            # convert "key: value" to "key = value"
            $sPackage = $sPackage -replace '(?sm)^([A-Z].*?):', '$1 ='
            # convert to data
            $oPackage = $sPackage | ConvertFrom-StringData
            # add to hastable
            if (-not($hPackages.Contains($oPackage.Package))) {
                $hPackages.Add($oPackage.Package, $oPackage)
            }
        }

        return ($hPackages | Sort-HashTable)
        # return $hPackages
    }

    End {
        Write-LeaveFunction
    }
}

function Get-OSPackagenameFromFilename {
    [CmdletBinding()][OutputType([String])]Param (
        [switch]$Online,
        [string]$Root = "/",
        [string]$Filename
    )
    Begin {
        Write-EnterFunction
    }

    Process {
        if ($Online) { $Root = '' }
        $infoDir = "$Root/var/lib/dpkg/info"
        $found = Select-String -Path $($infoDir + "/*.list") -Pattern $("^" + $Filename + "$") | Select-Object Path
        if ($found) {
            $dpkgInfoFile = Get-Item ($found).Path
            return $dpkgInfoFile.BaseName
        } else {
            return $null
        }
    }

    End {
        Write-LeaveFunction
    }
}