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#1 cache online results #2

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#1 cache online results #2

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4e57b0f
#1 cache online results
neutmute Oct 11, 2018
a1db728
fix caching bug
neutmute Oct 12, 2018
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73 changes: 59 additions & 14 deletions Convertto-TextASCIIArt.ps1
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Original file line number Diff line number Diff line change
Expand Up @@ -41,11 +41,11 @@
.EXAMPLE
PS C:\>.\Convertto-TextASCIIArt -Text '# This !'

�� �� ������ �� �� �� ���� ��
���������� �� �� �� �� �� ��
�� �� �� ������ �� �� ��
���������� �� �� �� �� ��
�� �� �� �� �� �� ���� ��
�� �� ������ �� �� �� ���� ��
���������� �� �� �� �� �� ��
�� �� �� ������ �� �� ��
���������� �� �� �� �� ��
�� �� �� �� �� �� ���� ��

Shows local font on the script not internet required
#>
Expand Down Expand Up @@ -301,6 +301,35 @@ Begin {
<#0#> Write-Host " " -BackgroundColor $FontColor -NoNewline; Write-Host " " -NoNewline; Write-Host " " -BackgroundColor $FontColor -NoNewline; Write-Host " "
<#0#> Write-Host " " -NoNewline; Write-Host $(" " * 3) -BackgroundColor $FontColor -NoNewline; Write-Host " "}
}#if


# https://stackoverflow.com/a/45884020/1141876
function Get-FNVHash {

param(
[string]$InputString
)

# Initial prime and offset chosen for 32-bit output
# See https://en.wikipedia.org/wiki/Fowler–Noll–Vo_hash_function
[uint32]$FNVPrime = 16777619
[uint32]$offset = 2166136261

# Convert string to byte array, may want to change based on input collation
$bytes = [System.Text.Encoding]::UTF8.GetBytes($InputString)

# Copy offset as initial hash value
[uint32]$hash = $offset

foreach($octet in $bytes)
{
# Apply XOR, multiply by prime and mod with max output size
$hash = $hash -bxor $octet
$hash = $hash * $FNVPrime % [System.Math]::Pow(2,32)
}
return $hash
}

}
Process {
switch ($PsCmdlet.ParameterSetName) {
Expand Down Expand Up @@ -419,17 +448,33 @@ Process {
if ($text -eq '# This is test !') {
$text = 'http://vcloud-lab.com'
}
$testEncode = [uri]::EscapeDataString($Text)
$url = "http://artii.herokuapp.com/make?text=$testEncode&font=$FontName"
Try {
$WebsiteApi = Invoke-WebRequest -Uri $url -ErrorAction Stop
Write-Host $WebsiteApi.Content -ForegroundColor $FontColor

$textHash = Get-FNVHash $Text
$cacheFolder = Join-Path $env:APPDATA "asciiart"
$cacheFile = Join-Path $cacheFolder "$textHash.txt"
New-Item -ItemType Directory -Force -Path $cacheFolder | Out-Null
$asciiArtText = ""
if (Test-Path $cacheFile)
{
$asciiArtText = [System.IO.File]::ReadAllText($cacheFile)
}
catch {
$errMessage = "Check your internet connection, Verify below url in browser`n"
$errMessage += $url
Write-Host $errMessage -BackgroundColor DarkRed
else {
$encodedText = [uri]::EscapeDataString($Text)
$url = "http://artii.herokuapp.com/make?text=$encodedText&font=$FontName"
Try {
$WebsiteApi = Invoke-WebRequest -Uri $url -ErrorAction Stop
$WebsiteApi.Content | Out-File $cacheFile
$asciiArtText = $WebsiteApi.Content
}
catch {
$ErrorMessage = $_.Exception.Message
$errMessage = "Check your internet connection, Verify below url in browser`n $ErrorMessage`n"
$errMessage += $url
Write-Host $errMessage -BackgroundColor DarkRed
}
}

Write-Host $asciiArtText -ForegroundColor $FontColor
} #Online
} #switch pscmdlet
}
Expand Down