Method parsePreset

options/parser/presets.go:23–61

parsePreset parses a preset string and returns the name and options

(presetStr string)

// parsePreset parses a preset string and returns the name and options
func (p *Parser) parsePreset(presetStr string) error {
	presetStr = strings.Trim(presetStr, " ")

	if len(presetStr) == 0 || strings.HasPrefix(presetStr, "#") {
		return nil
	}

	parts := strings.Split(presetStr, "=")

	if len(parts) != 2 {
		return fmt.Errorf("invalid preset string: %s", presetStr)
	}

	name := strings.Trim(parts[0], " ")
	if len(name) == 0 {
		return fmt.Errorf("empty preset name: %s", presetStr)
	}

	value := strings.Trim(parts[1], " ")
	if len(value) == 0 {
		return fmt.Errorf("empty preset value: %s", presetStr)
	}

	optsStr := strings.Split(value, "/")

	opts, rest := p.parseURLOptions(optsStr)

	if len(rest) > 0 {
		return fmt.Errorf("invalid preset value: %s", presetStr)
	}

	if p.presets == nil {
		p.presets = make(map[string][]urlOption)
	}

	p.presets[name] = opts

	return nil
}

// validatePresets validates all presets by applying them to a new Options instance
func (p *Parser) validatePresets(ctx context.Context) error {