internal/functions/horizontal-smush.ps1
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<# .SYNOPSIS Combines two horizontal text blocks with optional overlapping smushing. .DESCRIPTION The Horizontal-Smush function takes two horizontal text blocks (`textBlock1` and `textBlock2`) and combines them into a single text block. If an overlap is specified, the function applies horizontal smushing rules to the overlapping characters. The smushing behavior is determined by the options provided in the `opts` parameter, including the horizontal layout type (`hLayout`) and specific smushing rules (`hRule1` to `hRule6`). The function processes each line of the text blocks, calculates the overlapping segments, and applies the appropriate smushing rules to generate the combined output. .PARAMETER textBlock1 An array of strings representing the first horizontal text block. .PARAMETER textBlock2 An array of strings representing the second horizontal text block. .PARAMETER overlap The number of overlapping characters to smush. If set to 0, no smushing is applied, and the text blocks are concatenated. .PARAMETER opts A hashtable containing options for horizontal smushing, including: - `fittingRules.hLayout`: Specifies the horizontal layout type (e.g., Fitted, UniversalSmushing, ControlledSmushing). - `fittingRules.hRule1` to `hRule6`: Boolean flags indicating which smushing rules to apply. - `hardBlank`: The character used to represent hard blanks in FIGlet fonts. - `height`: The number of rows in the text blocks. .EXAMPLE $textBlock1 = @( "Hello", "World" ) $textBlock2 = @( "Foo", "Bar" ) $opts = @{ fittingRules = @{ hLayout = [LayoutType]::ControlledSmushing hRule1 = $true hRule2 = $false hRule3 = $true hRule4 = $false hRule5 = $true hRule6 = $false } hardBlank = "@" height = 2 } $result = Horizontal-Smush -textBlock1 $textBlock1 -textBlock2 $textBlock2 -overlap 3 -opts $opts This example combines two horizontal text blocks with 3 characters of overlap using ControlledSmushing rules. .NOTES This function relies on the following helper functions: - `Uni-Smush`: Applies universal smushing rules to overlapping characters. - `hRule1-Smush` to `hRule6-Smush`: Applies specific controlled smushing rules to overlapping characters. Author: Oleksandr Nikolaiev (@onikolaiev) #> function Horizontal-Smush { [Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSUseApprovedVerbs", "")] param ( [string[]]$textBlock1, # First text block [string[]]$textBlock2, # Second text block [int]$overlap, # Overlap length [hashtable]$opts # Options containing fitting rules and hardBlank ) $outputFig = @() $height = $opts.height for ($ii = 0; $ii -lt $height; $ii++) { $txt1 = $textBlock1[$ii] $txt2 = $textBlock2[$ii] $len1 = $txt1.Length $len2 = $txt2.Length $overlapStart = $len1 - $overlap $piece1 = $txt1.Substring(0, [math]::Max(0, $overlapStart)) $piece2 = "" # Determine overlap piece $seg1StartPos = [math]::Max(0, $len1 - $overlap) $seg1 = $txt1.Substring($seg1StartPos, [math]::Min($overlap, $len1 - $seg1StartPos)) $seg2 = $txt2.Substring(0, [math]::Min($overlap, $len2)) for ($jj = 0; $jj -lt $overlap; $jj++) { $ch1 = if ($jj -lt $len1) { $seg1[$jj] } else { " " } $ch2 = if ($jj -lt $len2) { $seg2[$jj] } else { " " } if ($ch1 -ne " " -and $ch2 -ne " ") { if ($opts.fittingRules.hLayout -eq [LayoutType]::Fitted) { $piece2 += Uni-Smush -ch1 $ch1 -ch2 $ch2 -hardBlank $opts.hardBlank } elseif ($opts.fittingRules.hLayout -eq [LayoutType]::UniversalSmushing) { $piece2 += Uni-Smush -ch1 $ch1 -ch2 $ch2 -hardBlank $opts.hardBlank } else { # Controlled Smushing $nextCh = "" if (-not $nextCh -and $opts.fittingRules.hRule1) { $nextCh = hRule1-Smush -ch1 $ch1 -ch2 $ch2 -hardBlank $opts.hardBlank } if (-not $nextCh -and $opts.fittingRules.hRule2) { $nextCh = hRule2-Smush -ch1 $ch1 -ch2 $ch2 -hardBlank $opts.hardBlank } if (-not $nextCh -and $opts.fittingRules.hRule3) { $nextCh = hRule3-Smush -ch1 $ch1 -ch2 $ch2 -hardBlank $opts.hardBlank } if (-not $nextCh -and $opts.fittingRules.hRule4) { $nextCh = hRule4-Smush -ch1 $ch1 -ch2 $ch2 -hardBlank $opts.hardBlank } if (-not $nextCh -and $opts.fittingRules.hRule5) { $nextCh = hRule5-Smush -ch1 $ch1 -ch2 $ch2 -hardBlank $opts.hardBlank } if (-not $nextCh -and $opts.fittingRules.hRule6) { $nextCh = hRule6-Smush -ch1 $ch1 -ch2 $ch2 -hardBlank $opts.hardBlank } $nextCh = if ($nextCh) { $nextCh } else { Uni-Smush -ch1 $ch1 -ch2 $ch2 -hardBlank $opts.hardBlank } $piece2 += $nextCh } } else { $piece2 += Uni-Smush -ch1 $ch1 -ch2 $ch2 -hardBlank $opts.hardBlank } } if ($overlap -ge $len2) { $piece3 = "" } else { $piece3 = $txt2.Substring($overlap, [math]::Max(0, $len2 - $overlap)) } $outputFig += $piece1 + $piece2 + $piece3 } return $outputFig } |