internal/functions/get-smushingrules.ps1
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<# .SYNOPSIS Retrieves smushing rules for horizontal and vertical layouts based on the specified layout values. .DESCRIPTION This function calculates the smushing rules for both horizontal and vertical layouts based on the provided `oldLayout` and `newLayout` values. It processes a predefined set of codes to determine the layout type (e.g., Fitted, UniversalSmushing) and individual smushing rules (e.g., `hRule1`, `vRule5`). The resulting rules are returned as a hashtable. .PARAMETER oldLayout The legacy layout value used to determine smushing rules if `newLayout` is not provided. .PARAMETER newLayout The updated layout value used to determine smushing rules. If provided, it takes precedence over `oldLayout`. .EXAMPLE $oldLayout = 2048 $newLayout = 8192 $rules = Get-SmushingRules -oldLayout $oldLayout -newLayout $newLayout This example retrieves smushing rules based on the provided `oldLayout` and `newLayout` values. .EXAMPLE $oldLayout = 128 $rules = Get-SmushingRules -oldLayout $oldLayout This example retrieves smushing rules using only the `oldLayout` value. .NOTES The function uses a predefined set of codes to map layout values to smushing rules. The resulting hashtable includes keys such as `hLayout`, `vLayout`, `hRule1`, `vRule5`, and others. Author: Oleksandr Nikolaiev (@onikolaiev) #> function Get-SmushingRules { [Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSUseApprovedVerbs", "")] [Diagnostics.CodeAnalysis.SuppressMessageAttribute('PSUseSingularNouns','')] param ( [int]$oldLayout, [int]$newLayout ) # Initialize rules $rules = @{} # Define codes array $codes = @( @{ Value = 16384; Key = "vLayout"; Default = [LayoutType]::UniversalSmushing }, @{ Value = 8192; Key = "vLayout"; Default = [LayoutType]::Fitted }, @{ Value = 4096; Key = "vRule5"; Default = $true }, @{ Value = 2048; Key = "vRule4"; Default = $true }, @{ Value = 1024; Key = "vRule3"; Default = $true }, @{ Value = 512; Key = "vRule2"; Default = $true }, @{ Value = 256; Key = "vRule1"; Default = $true }, @{ Value = 128; Key = "hLayout"; Default = [LayoutType]::UniversalSmushing }, @{ Value = 64; Key = "hLayout"; Default = [LayoutType]::Fitted }, @{ Value = 32; Key = "hRule6"; Default = $true }, @{ Value = 16; Key = "hRule5"; Default = $true }, @{ Value = 8; Key = "hRule4"; Default = $true }, @{ Value = 4; Key = "hRule3"; Default = $true }, @{ Value = 2; Key = "hRule2"; Default = $true }, @{ Value = 1; Key = "hRule1"; Default = $true } ) # Determine the layout value $val = if ($null -ne $newLayout) { $newLayout } else { $oldLayout } # Process codes foreach ($code in $codes) { if ($val -ge $code.Value) { $val -= $code.Value if (-not $rules.ContainsKey($code.Key)) { $rules[$code.Key] = $code.Default } } elseif ($code.Key -notin @("vLayout", "hLayout")) { $rules[$code.Key] = $false } } # Handle undefined horizontal layout if (-not $rules.ContainsKey("hLayout")) { if ($oldLayout -eq 0) { $rules["hLayout"] = [LayoutType]::Fitted } elseif ($oldLayout -eq -1) { $rules["hLayout"] = [LayoutType]::Full } else { if ( $rules["hRule1"] -or $rules["hRule2"] -or $rules["hRule3"] -or $rules["hRule4"] -or $rules["hRule5"] -or $rules["hRule6"] ) { $rules["hLayout"] = [LayoutType]::ControlledSmushing } else { $rules["hLayout"] = [LayoutType]::UniversalSmushing } } } elseif ($rules["hLayout"] -eq [LayoutType]::UniversalSmushing) { if ( $rules["hRule1"] -or $rules["hRule2"] -or $rules["hRule3"] -or $rules["hRule4"] -or $rules["hRule5"] -or $rules["hRule6"] ) { $rules["hLayout"] = [LayoutType]::ControlledSmushing } } # Handle undefined vertical layout if (-not $rules.ContainsKey("vLayout")) { if ( $rules["vRule1"] -or $rules["vRule2"] -or $rules["vRule3"] -or $rules["vRule4"] -or $rules["vRule5"] ) { $rules["vLayout"] = [LayoutType]::ControlledSmushing } else { $rules["vLayout"] = [LayoutType]::Full } } elseif ($rules["vLayout"] -eq [LayoutType]::UniversalSmushing) { if ( $rules["vRule1"] -or $rules["vRule2"] -or $rules["vRule3"] -or $rules["vRule4"] -or $rules["vRule5"] ) { $rules["vLayout"] = [LayoutType]::ControlledSmushing } } return $rules } |