Rockbox font converter

makefont.ps1

<#
.SYNOPSIS
    RockBox font converter.
.DESCRIPTION
    Converts a list of TTF or OTF font files to RockBox file format (FNT).

    For convertion, script uses 'otf2bdf' and 'convbdf' tools.
    Please ensure that mentioned tools present before using the script.

    '-ToolsDir' parameter can be used to specify a custom tools directory location.

    Tools download links:

    * otf2bdf - https://www.rockbox.org/wiki/bin/edit/Main/OTF2BDF?topicparent=Main.RockboxFontConvertor
    * convbdf - http://qupada.orcon.net.nz/convbdf.exe
.PARAMETER Files
    One or multiple ttf/otf fonts to convert separated by comma.
.PARAMETER Sizes
    Comma-separated list of font sizes to be generated.
.PARAMETER OutDir
    Output directory for generated font files.
    Default value is a current directory.
.PARAMETER Verify
    Check the exit code of external font convertion tools.
.PARAMETER KeepBDF
    Keep BDF font file alongside the generated FNT files.
.PARAMETER ToolsDir
    Path to a directory with otf2bdf.exe and convbdf.exe tools.
    Default value is a script location directory.
.EXAMPLE
    makefont.ps1 -Files font.ttf -Sizes 18
.EXAMPLE
    makefont.ps1 -OutDir G:\.rockbox\fonts -Files Font1.ttf,Font2.ttf -Sizes 16,24,32,48
.NOTES
    Author: x1unix
#>
param(
    [Parameter(Mandatory=$true)]
    [string[]] $Files,
    [Parameter(Mandatory=$true)]
    [ValidateRange(1,128)]
    [int[]] $Sizes,
    [string] $OutDir=".",
    [string] $ToolsDir="$PSScriptRoot",
    [boolean] $Verify=$False,
    [boolean] $KeepBDF=$False
)

function New-TemporaryDirectory {
    $parent = [System.IO.Path]::GetTempPath()
    [string] $name = [System.Guid]::NewGuid()
    New-Item -ItemType Directory -Path (Join-Path $parent $name)
}

$stepCount=2
$OutDir=(Get-Item "$OutDir").FullName
$chunkPerPercent=100/($Sizes.Count*$Files.Count*$stepCount)
$percentDone=0

if (-not($KeepBDF))
{
    $tempDir=New-TemporaryDirectory
} 
else
{
    $tempDir=$OutDir
}

for ($i = 0; $i -lt $Files.Count; $i++)
{
    $file=$Files[$i]
    if (-not(Test-Path -Path $file -PathType Leaf))
    {
        Write-Error -Message "File not exists - $file" -ErrorAction Stop
    }

    $fileName=(Get-ChildItem "$file").Name
    $fullFilePath=(Get-ChildItem "$file").FullName
    $baseFileName=(Split-Path "$fileName" -Leaf).Split('.')[0]
    for ($j=0; $j -lt $Sizes.Count; $j++)
    {
        $size = $Sizes[$j]
        $bdfFile="$tempDir\$size-$baseFileName.bdf"
        $destFile="$OutDir\$size-$baseFileName.fnt"
        Write-Progress -Activity "[$($i+1)/$($Files.Count)] Processing '$fileName' for ${size}pt..."`
            -PercentComplete $percentDone `
            -CurrentOperation "${size}pt - Converting TTF/OTF to BDF..."
        $p = Start-Process -NoNewWindow `
            -FilePath "$ToolsDir\otf2bdf.exe" `
            -ArgumentList "-p $size -o $bdfFile $fullFilePath" `
            -PassThru -Wait
        if ($Verify -and $p.ExitCode -ne 0)
        {
            Write-Error "Failed to convert $fullFilePath to BDF, otf2bdf returned error $($p.ExitCode)" `
                -ErrorAction Stop
        }
        $percentDone+=$chunkPerPercent

        Write-Progress -Activity "[$($i+1)/$($Files.Count)] Processing '$fileName' for ${size}pt..."`
            -PercentComplete $percentDone `
            -CurrentOperation "${size}pt - Converting BDF to ROCKbox FNT..."
        $p = Start-Process -NoNewWindow `
            -FilePath "$ToolsDir\convbdf.exe" `
            -ArgumentList "-f -o $destFile $bdfFile" `
            -PassThru -Wait
        if ($Verify -and $p.ExitCode -ne 0)
        {
            Write-Error "Failed to convert $bdfFile to FNT, convbdf returned error $($p.ExitCode)" `
                -ErrorAction Stop
        }
        $percentDone+=$chunkPerPercent
    }
}

Write-Progress -Activity "Removing temporary files..." -PercentComplete 99 `
    -CurrentOperation "Deleting '$tempDir' directory..."
Remove-Item -Recurse $tempDir

Write-Host "Generated $($Sizes.Count*$Files.Count) files to '$OutDir'"