Initialize-Environment.ps1

#
# Title:     Initialize-Environment.ps1
# Author:    Jourdan Templeton
# Email:     hello@jourdant.me
# Modified:  21/07/2015 04:35PM NZDT
#

#properties
#================================================================
$tesseract_url = "https://nuget.org/api/v2/package/Tesseract"
$tessdata_url = "https://nuget.org/api/v2/package/tesseract-ocr"
$itextsharp_url = "https://nuget.org/api/v2/package/iTextSharp"

$tesseract_zip_name = "$PSScriptRoot\tesseract.zip"
$tessdata_zip_name = "$PSScriptRoot\tessdata.zip"
$itextsharp_zip_name = "$PSScriptRoot\itextsharp.zip"

$input_dir_name = "$PSScriptRoot\Input"
$output_dir_name = "$PSScriptRoot\Output"
$lib_dir_name = "$PSScriptRoot\Lib"
#================================================================

#create dir structure
If ((Test-Path $input_dir_name) -eq $False) { mkdir $input_dir_name | Out-Null }
If ((Test-Path $output_dir_name) -eq $False) { mkdir $output_dir_name | Out-Null }
If ((Test-Path $lib_dir_name) -eq $False) { mkdir $lib_dir_name | Out-Null }

#import assemblies into session
Add-Type -Assembly "System.IO.Compression.FileSystem"

#download and extract tesseract libraries
If ((Test-Path $tesseract_zip_name) -eq $False) {
    Write-Output "Downloading: '$tesseract_url'  To: '$tesseract_zip_name'"
    Invoke-WebRequest -Uri $tesseract_url -OutFile  $tesseract_zip_name
}

If ((Test-Path $tesseract_zip_name) -eq $True) {
    $zip = [IO.Compression.ZipFile]::OpenRead($tesseract_zip_name)
	
    #extract tesseract libraries
    $zip.Entries | where FullName -Match "(?i)lib\/net45[0-9]*\/tesseract\.dll" | % {
        $dir = (Get-Item $lib_dir_name).FullName
        If ($_.FullName.Contains("content")) { $dir += "\" + $matches[0] }
        If ((Test-Path $dir) -eq $False) { mkdir $dir | Out-Null }

        $file = $dir + "\" + $_.Name
        [IO.Compression.ZipFileExtensions]::ExtractToFile($_, $file, $true) 
    }
    $zip.Entries | where FullName -Match "(x86|x64)" | % {
        $dir = (Get-Item $lib_dir_name).FullName
        $dir += "\" + $matches[0]
        If ((Test-Path $dir) -eq $False) { mkdir $dir | Out-Null }

        $file = $dir + "\" + $_.Name
        [IO.Compression.ZipFileExtensions]::ExtractToFile($_, $file, $true) 
    }
    $zip.Dispose()
    Remove-Item $tesseract_zip_name -Force
}

#download and extract tesseract data files
If ((Test-Path $tessdata_zip_name) -eq $False) {
    Write-Output "Downloading: '$tessdata_url'  To: '$tessdata_zip_name'"
    Invoke-WebRequest -Uri $tessdata_url -OutFile  $tessdata_zip_name
}

If ((Test-Path $tessdata_zip_name) -eq $True) {
    $zip = [IO.Compression.ZipFile]::OpenRead($tessdata_zip_name)
	
    #extract tessdata libraries
    $zip.Entries | where FullName -Match "eng" | % {
        $dir = (Get-Item $lib_dir_name).FullName + "\tessdata"
        If ((Test-Path $dir) -eq $False) { mkdir $dir | Out-Null }
		
        $file = $dir + "\" + $_.Name
        [IO.Compression.ZipFileExtensions]::ExtractToFile($_, $file, $true) 
    }

    $zip.Dispose()
    Remove-Item $tessdata_zip_name -Force
}

#download and extract iTextSharp library
If ((Test-Path $itextsharp_zip_name) -eq $False) { 
    Write-Output "Downloading: '$itextsharp_url'  To: '$itextsharp_zip_name'"
    Invoke-WebRequest -Uri $itextsharp_url -OutFile  $itextsharp_zip_name
}

If ((Test-Path $itextsharp_zip_name) -eq $True) {
    $zip = [IO.Compression.ZipFile]::OpenRead($itextsharp_zip_name)
	
    #extract itextsharp libraries
    $zip.Entries | where FullName -Match "itextsharp.dll" | % {
        $dir = (Get-Item $lib_dir_name).FullName
        $file = $dir + "\" + $_.Name
        [IO.Compression.ZipFileExtensions]::ExtractToFile($_, $file, $true) 
    }

    $zip.Dispose()
    Remove-Item $itextsharp_zip_name -Force
}