package copy import ( "strings" "github.com/pkg/errors" ) // ParseSourceAndDestination parses the source and destination input into a // possibly specified container and path. The input format is described in // podman-cp(1) as "[nameOrID:]path". Colons in paths are supported as long // they start with a dot or slash. // // It returns, in order, the source container and path, followed by the // destination container and path, and an error. Note that exactly one // container must be specified. func ParseSourceAndDestination(source, destination string) (string, string, string, string, error) { sourceContainer, sourcePath := parseUserInput(source) destContainer, destPath := parseUserInput(destination) if len(sourcePath) == 0 || len(destPath) == 0 { return "", "", "", "", errors.Errorf("invalid arguments %q, %q: you must specify paths", source, destination) } return sourceContainer, sourcePath, destContainer, destPath, nil } // parseUserInput parses the input string and returns, if specified, the name // or ID of the container and the path. The input format is described in // podman-cp(1) as "[nameOrID:]path". Colons in paths are supported as long // they start with a dot or slash. func parseUserInput(input string) (container string, path string) { if len(input) == 0 { return } path = input // If the input starts with a dot or slash, it cannot refer to a // container. if input[0] == '.' || input[0] == '/' { return } if spl := strings.SplitN(path, ":", 2); len(spl) == 2 { container = spl[0] path = spl[1] } return }