modules/Helper/StringHelper.psm1
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using module '.\DateTimeHelper.psm1' class StringHelper { static [string] getHash([string]$string){ $_stringAsStream = [System.IO.MemoryStream]::new() $_writer = [System.IO.StreamWriter]::new($_stringAsStream) $_writer.write($string) $_writer.Flush() $_stringAsStream.Position = 0 return (Get-FileHash -InputStream $_stringAsStream).Hash } static [PSCustomObject[]] groupValueByBlocks([int[]] $values, [int] $intervalBlock, [int] $threshold, [double[]] $percentile, [bool]$formatAsTime) { $_cumulativePercentage = 0; $_baseline = ''; $j = 0 $_remainingLines = 0; $_remainingPercentage = 0; $_analyzedLines = 0 $_maxBlocks = $values.Count - 1 for ($i=0; $i -le $_maxBlocks; $i++){ $_analyzedLines += $values[$i] } $_retValue = @() for ($i=0; $i -le $_maxBlocks; $i++){ $_percentage = $values[$i] / $_analyzedLines $_cumulativePercentage += $_percentage $_prevInterval = ''; $_nextInterval = ''; $_interval = '' if ($i -eq 0){ if ($formatAsTime){ $_interval = ("{0} < t <= {1}" -f @(([DateTimeHelper]::FormatMilliseconds(0), ([DateTimeHelper]::FormatMilliseconds(($i + 1) * $intervalBlock))))) } else { $_interval = ("{0} < x <= {1}" -f @(0, (($i + 1) * $intervalBlock))) } } elseif ($i -eq $_maxBlocks){ if ($_baseline) { if ($formatAsTime){ $_prevInterval = ("{0} < t <= {1}" -f @(([DateTimeHelper]::FormatMilliseconds($_baseline), ([DateTimeHelper]::FormatMilliseconds($i * $intervalBlock))))) $_nextInterval = ("t > {0}" -f ([DateTimeHelper]::FormatMilliseconds($i * $intervalBlock))) $_interval = ("t > {0}" -f ([DateTimeHelper]::FormatMilliseconds($_baseline))) } else { $_prevInterval = ("{0} < x <= {1}" -f @($_baseline, (($i * $intervalBlock)))) $_nextInterval = ("x > {0}" -f ($i * $intervalBlock)) $_interval = ("x > {0}" -f $_baseline) } } else { if ($formatAsTime){ $_interval = ("t > {0}" -f ([DateTimeHelper]::FormatMilliseconds(($i + 1) * $intervalBlock))) } else { $_interval = ("x > {0}" -f (($i + 1) * $intervalBlock)) } } } else { if ($_baseline) { if ($formatAsTime){ $_prevInterval = ("{0} < t <= {1}" -f @(([DateTimeHelper]::FormatMilliseconds($_baseline), ([DateTimeHelper]::FormatMilliseconds($i * $intervalBlock))))) $_nextInterval = ("{0} < t <= {1}" -f @(([DateTimeHelper]::FormatMilliseconds($i * $intervalBlock)), ([DateTimeHelper]::FormatMilliseconds(($i + 1) * $intervalBlock)))) $_interval = ("{0} < t <= {1}" -f @(([DateTimeHelper]::FormatMilliseconds($_baseline), ([DateTimeHelper]::FormatMilliseconds(($i + 1) * $intervalBlock))))) } else { $_prevInterval = ("{0} < x <= {1}" -f @($_baseline, ($i * $intervalBlock))) $_nextInterval = ("{0} < x <= {1}" -f @(($i * $intervalBlock), (($i + 1) * $intervalBlock))) $_interval = ("{0} < x <= {1}" -f @($_baseline, (($i + 1) * $intervalBlock))) } } else { if ($formatAsTime){ $_interval = ("{0} < t <= {1}" -f @(([DateTimeHelper]::FormatMilliseconds($i * $intervalBlock)), ([DateTimeHelper]::FormatMilliseconds(($i + 1) * $intervalBlock)))) } else { $_interval = ("{0} < x <= {1}" -f @(($i * $intervalBlock), (($i + 1) * $intervalBlock))) } } } if ($values[$i] -ne 0){ if (($_cumulativePercentage -ge $percentile[$j]) -or ($_percentage -ge $threshold)){ if ($_prevInterval){ # Split in before and after record $_retValue += ([PSCustomObject]@{PSTypeName='GroupBlock'; interval=$_prevInterval; items=$_remainingLines; ` percentage=("{0:P1}" -f $_remainingPercentage); ` up_to=("{0:P1}" -f ($_cumulativePercentage - $_percentage)); ` above=("{0:P1}" -f (1 - $_cumulativePercentage + $_percentage))}) $_retValue += ([PSCustomObject]@{PSTypeName='GroupBlock'; interval=$_nextInterval; items=$values[$i]; ` percentage=("{0:P1}" -f $_percentage); ` up_to=("{0:P1}" -f $_cumulativePercentage); ` above=("{0:P1}" -f (1 - $_cumulativePercentage))}) } else { $_retValue += ([PSCustomObject]@{PSTypeName='GroupBlock'; interval=$_interval; items=$values[$i]; ` percentage=("{0:P1}" -f ($_percentage + $_remainingPercentage)); ` up_to=("{0:P1}" -f $_cumulativePercentage); ` above=("{0:P1}" -f (1 - $_cumulativePercentage))}) } if ($_cumulativePercentage -ge ($percentile[$j])) { $j += 1 } $_baseline = '' $_remainingPercentage = 0 $_remainingLines = 0 } else { if ($_baseline -eq '') { $_baseline = "$($i * $intervalBlock)" } $_remainingPercentage += $_percentage $_remainingLines += $values[$i] } } else { if ($_baseline -eq '') { $_baseline = "$($i * $intervalBlock)" } } } return $_retValue } static [string] getMedian([string[]] $array) { if ($array.count % 2) { #odd $median = $array[[math]::Floor($array.count / 2)] } else { #even $median = ($array[$array.Count / 2], $array[$array.count / 2 - 1] | Measure-Object -Average).Average } return $median } static [string] getMode([string[]] $array) { $i=0 $mode = @() foreach ($group in ($array | Group-Object | Sort-Object -Descending count)) { if ($group.count -ge $i) { $i = $group.count $mode += $group.Name } else { break } } return $mode } static [string] FormatFileSize([int] $size){ If ($size -gt 1TB) {$_retValue = [string]::Format("{0:N2}TB", $size / 1TB)} ElseIf ($size -gt 1GB) {$_retValue = [string]::Format("{0:N2}GB", $size / 1GB)} ElseIf ($size -gt 1MB) {$_retValue = [string]::Format("{0:N2}MB", $size / 1MB)} ElseIf ($size -gt 1KB) {$_retValue = [string]::Format("{0:N2}KB", $size / 1KB)} ElseIf ($size -gt 0) {$_retValue = [string]::Format("{0:N2}B", $size)} Else {$_retValue = ""} return $_retValue } } |