Private/Size/Conversion/ConvertToBytes-Fixed.ps1
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function ConvertTo-Bytes { [CmdletBinding()] param ( [Parameter(Mandatory=$false)] [AllowNull()] [AllowEmptyString()] [string]$SizeString = "-1" ) # If null or empty, return -1 if ($null -eq $SizeString -or $SizeString -eq "") { return -1 } # Handle default/special case values # Check for special case of negative values with or without units (like "-1kb") if ($SizeString -match "^-\d+(\s*)(b|kb|mb|gb|tb)?$") { return -1 } # Normalize any decimal separator to a period and remove extra spaces $normalizedSizeString = $SizeString -replace '[,;]', '.' # Compress multiple spaces to single space $normalizedSizeString = $normalizedSizeString -replace '\s+', ' ' # Remove space between number and unit $normalizedSizeString = $normalizedSizeString -replace '(\d)\s+(b|kb|mb|gb|tb)$', '$1$2' # Try to match a pattern for size with unit # Format is a number (possibly with decimal) followed by an optional unit (b, kb, mb, gb, tb) if ($normalizedSizeString -match '^\s*(\d+(?:\.\d+)?)\s*(b|kb|mb|gb|tb)?\s*$') { $value = [double]$Matches[1] # Default unit is bytes $unit = if ($Matches.Count -gt 2 -and $Matches[2]) { $Matches[2].ToLower() } else { "b" } # Calculate size in bytes based on unit switch ($unit) { "b" { $value = $value } "kb" { $value = $value * 1KB } "mb" { $value = $value * 1MB } "gb" { $value = $value * 1GB } "tb" { $value = $value * 1TB } } return [long]$value } # If no match, return -1 (invalid format) Write-Warning "Invalid size format: '$SizeString'. Expected format is a number followed by optional unit (B, KB, MB, GB, TB)." return -1 } |