56 lines
1.7 KiB
PowerShell
56 lines
1.7 KiB
PowerShell
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function Format-TextJustified {
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param(
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[string[]]$Words,
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[int]$MaxWidth,
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[switch]$ExceptLastLine
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)
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if ($Words.Count -eq 1) {
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$Words = $Words -split '\s+'
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}
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$preProcess = @()
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$row = @{ Letters = 0; Words = @() }
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foreach ($word in $Words) {
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if (($row.Words.Count -gt 0) -and ($row.Letters + $row.Words.Count + $word.Length -gt $MaxWidth)) {
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# adding this word to the array would make it cross the magic threshold
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# Add a new row to the array and start using that.
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$preProcess += $row
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$row = @{ Letters = 0; Words = @() }
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}
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$row.Words += $word
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$row.Letters += $word.Length
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}
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# push the final row
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$preProcess += $row
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$results = @()
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$rowCounter = 0
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foreach ($row in $preProcess) {
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if ($row.Words.Count -eq 1 -or $rowCounter -eq $preProcess.Count) {
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$results += (($row.Words -join ' ') + "".PadRight($MaxWidth - $row.Letters - $row.Words.Count + 1))
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continue
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}
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$rowWordCount = $row.Words.Count
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$countLessOne = $rowWordCount - 1
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$spaces = $MaxWidth - $row.Letters
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$minSpaces = "".PadRight(([Math]::Floor($spaces/$countLessOne)))
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$addSpace = $spaces % $countLessOne
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$result = $row.Words[0]
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for($i = 1; $i -lt $rowWordCount; $i++) {
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$extraSpaces = ""
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if ($i -le $addSpace) {
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$extraSpaces = ' '
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}
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$word = $row.Words[$i]
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$result += "$minSpaces$extraSpaces$word"
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}
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$results += $result
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}
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if ($ExceptLastLine) {
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$results[-1] = ($results[-1] -split '\s+') -join ' '
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}
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return $results -join "`n"
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}
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