Method ReadStanza

deb/format.go:264–313

ReadStanza reeads one stanza from control file

()

// ReadStanza reeads one stanza from control file
func (c *ControlFileReader) ReadStanza() (Stanza, error) {
	stanza := make(Stanza, 32)
	lastField := ""
	lastFieldMultiline := c.isInstaller

	for c.scanner.Scan() {
		line := c.scanner.Text()

		// Current stanza ends with empty line
		if line == "" {
			if len(stanza) > 0 {
				return stanza, nil
			}
			continue
		}

		if line[0] == ' ' || line[0] == '\t' || c.isInstaller {
			if lastFieldMultiline {
				stanza[lastField] += line + "\n"
			} else {
				stanza[lastField] += " " + strings.TrimSpace(line)
			}
		} else {
			parts := strings.SplitN(line, ":", 2)
			if len(parts) != 2 {
				return nil, ErrMalformedStanza
			}
			lastField = canonicalCase(parts[0])
			lastFieldMultiline = isMultilineField(lastField, c.isRelease)
			if lastFieldMultiline {
				// Trim trailing whitespace from the inline value so that
				// "Package-List: " does not add empty line
				inlineVal := strings.TrimRight(parts[1], " \t")
				stanza[lastField] = inlineVal
				if inlineVal != "" {
					stanza[lastField] += "\n"
				}
			} else {
				stanza[lastField] = strings.TrimSpace(parts[1])
			}
		}
	}
	if err := c.scanner.Err(); err != nil {
		return nil, err
	}
	if len(stanza) > 0 {
		return stanza, nil
	}
	return nil, nil
}