Function PruneFilters

cli/command/utils.go:25–59

PruneFilters merges prune filters specified in config.json with those specified as command-line flags. It returns a deep copy of filters to prevent mutating the original. CLI label filters have precedence over those specified in config.json. If a label filter specified as flag conflicts with a labe

(dockerCLI config.Provider, filters client.Filters)

// (i.e., "label=some-value" conflicts with "label!=some-value", and vice versa),
// then the filter defined in config.json is omitted.
func PruneFilters(dockerCLI config.Provider, filters client.Filters) client.Filters {
	pruneFilters := filters.Clone()

	cfg := dockerCLI.ConfigFile()
	if cfg == nil {
		return pruneFilters
	}

	// Merge filters provided through the CLI with default filters defined
	// in the CLI-configfile.
	for _, f := range cfg.PruneFilters {
		k, v, ok := strings.Cut(f, "=")
		if !ok {
			continue
		}
		switch k {
		case "label":
			// "label != some-value" conflicts with "label = some-value"
			if pruneFilters["label!"][v] {
				continue
			}
			pruneFilters.Add(k, v)
		case "label!":
			// "label != some-value" conflicts with "label = some-value"
			if pruneFilters["label"][v] {
				continue
			}
			pruneFilters.Add(k, v)
		default:
			pruneFilters.Add(k, v)
		}
	}

	return pruneFilters
}

// ValidateOutputPath validates the output paths of the "docker cp" command.
func ValidateOutputPath(path string) error {