Function ResolveCppIncludePath

depgraph/languages/cpp/parser_cpp.go:247–277

ResolveCppIncludePath resolves a C++ include path to possible file paths.

(sourceFile, includePath string, suppliedFiles map[string]bool)

// ResolveCppIncludePath resolves a C++ include path to possible file paths.
func ResolveCppIncludePath(sourceFile, includePath string, suppliedFiles map[string]bool) []string {
	sourceDir := filepath.Dir(sourceFile)
	baseCandidates := includeBasePathCandidates(sourceDir, includePath)
	seen := make(map[string]bool)

	var resolvedPaths []string
	appendResolved := func(path string) {
		if !seen[path] && suppliedFiles[path] {
			seen[path] = true
			resolvedPaths = append(resolvedPaths, path)
		}
	}

	if filepath.Ext(includePath) != "" {
		for _, base := range baseCandidates {
			appendResolved(base)
		}
		sort.Strings(resolvedPaths)
		return resolvedPaths
	}

	extensions := []string{".h", ".hpp", ".hh", ".hxx"}
	for _, base := range baseCandidates {
		for _, ext := range extensions {
			appendResolved(base + ext)
		}
	}

	sort.Strings(resolvedPaths)
	return resolvedPaths
}

func includeBasePathCandidates(sourceDir, includePath string) []string {
	candidates := make(map[string]bool)