static parse()

in src/common-core/shared_access_signature.ts [169:198]
17 lines of code
5 McCabe index (conditional complexity)

  static parse(source: string, requiredFields?: string[]): SharedAccessSignature {
    /*Codes_SRS_NODE_COMMON_SAS_05_001: [The input argument source shall be converted to string if necessary.]*/
    const parts = String(source).split(/\s/);
    /*Codes_SRS_NODE_COMMON_SAS_05_005: [The parse method shall throw FormatError if the shared access signature string does not start with 'SharedAccessSignature<space>'.]*/
    if (parts.length !== 2 || !parts[0].match(/SharedAccessSignature/)) {
      throw new FormatError('Malformed signature');
    }

    const dict = createDictionary(parts[1], '&');
    const err = 'The shared access signature is missing the property: ';

    requiredFields = requiredFields || [];

    /*Codes_SRS_NODE_COMMON_SAS_05_006: [The parse method shall throw ArgumentError if any of fields in the requiredFields argument are not found in the source argument.]*/
    requiredFields.forEach((key: string): void => {
      if (!(key in dict)) throw new ArgumentError(err + key);
    });

    /*Codes_SRS_NODE_COMMON_SAS_05_002: [The parse method shall create a new instance of SharedAccessSignature.]*/
    const sas = new SharedAccessSignature();

    /*Codes_SRS_NODE_COMMON_SAS_05_003: [It shall accept a string argument of the form 'name=value[&name=value…]' and for each name extracted it shall create a new property on the SharedAccessSignature object instance.]*/
    /*Codes_SRS_NODE_COMMON_SAS_05_004: [The value of the property shall be the value extracted from the source argument for the corresponding name.]*/
    Object.keys(dict).forEach((key: string): void => {
      sas[key] = dict[key];
    });

    /*Codes_SRS_NODE_COMMON_SAS_05_007: [The generated SharedAccessSignature object shall be returned to the caller.]*/
    return sas;
  }