Function GetNormalizedAbsolutePath

internal/tspath/path.go:393–512

(fileName string, currentDirectory string)

}

func GetNormalizedAbsolutePath(fileName string, currentDirectory string) string {
	rootLength := GetRootLength(fileName)
	if rootLength == 0 && currentDirectory != "" {
		fileName = CombinePaths(currentDirectory, fileName)
	} else {
		// CombinePaths normalizes slashes, so not necessary in other branch
		fileName = NormalizeSlashes(fileName)
	}
	rootLength = GetRootLength(fileName)

	if simpleNormalized, ok := simpleNormalizePath(fileName); ok {
		length := len(simpleNormalized)
		if length > rootLength {
			return RemoveTrailingDirectorySeparator(simpleNormalized)
		}
		if length == rootLength && rootLength != 0 {
			return EnsureTrailingDirectorySeparator(simpleNormalized)
		}
		return simpleNormalized
	}

	length := len(fileName)
	root := fileName[:rootLength]
	// `normalized` is only initialized once `fileName` is determined to be non-normalized.
	// `changed` is set at the same time.
	var changed bool
	var normalized string
	var segmentStart int
	index := rootLength
	normalizedUpTo := index
	seenNonDotDotSegment := rootLength != 0
	for index < length {
		// At beginning of segment
		segmentStart = index
		ch := fileName[index]
		for ch == '/' {
			index++
			if index < length {
				ch = fileName[index]
			} else {
				break
			}
		}
		if index > segmentStart {
			// Seen superfluous separator
			if !changed {
				normalized = fileName[:max(rootLength, segmentStart-1)]
				changed = true
			}
			if index == length {
				break
			}
			segmentStart = index
		}
		// Past any superfluous separators
		segmentEnd := strings.IndexByte(fileName[index+1:], '/')
		if segmentEnd == -1 {
			segmentEnd = length