/// <summary> /// Converts the pattern expression into a collection of descriptions /// of parameters. /// </summary> /// <param name="pOptions">Parser options to use.</param> /// <param name="pHelpProvider"></param> /// <param name="pPattern">A string containing the syntax pattern for the application's argument.</param> /// <returns>A collection of descriptions.</returns> public static List <Description> Create(CliOptions pOptions, iHelpProvider pHelpProvider, string pPattern) { string[] strings = pPattern.Split(' '); return((from str in strings where !string.IsNullOrWhiteSpace(str) select Parse(pOptions, pHelpProvider, str)).ToList()); }
/// <summary> /// Converts the pattern for a single parameter description into an /// initialized description object. /// </summary> /// <param name="pOptions">Parsing options to use.</param> /// <param name="pHelpProvider"></param> /// <param name="pPattern">A string containing the syntax of a single argument.</param> /// <returns>A description object</returns> /// <exception cref="SyntaxErrorException"></exception> public static Description Parse(CliOptions pOptions, iHelpProvider pHelpProvider, string pPattern) { if (string.IsNullOrWhiteSpace(pPattern)) { throw new SyntaxErrorException(Errors.DescriptionFactoryNoPattern); } string pattern = pPattern.Trim(); eSCOPE scope = pattern.StartsWith("[") && pattern.EndsWith("]") ? eSCOPE.OPTIONAL : eSCOPE.REQUIRED; pattern = scope == eSCOPE.OPTIONAL ? pattern.Substring(1, pattern.Length - 2) : pattern; eROLE role = pattern.StartsWith(pOptions.Prefix) ? eROLE.NAMED : eROLE.PASSED; pattern = role == eROLE.NAMED ? pattern.Substring(pOptions.Prefix.Length) : pattern; eMULTIPLICITY multi = pattern.EndsWith("#") ? eMULTIPLICITY.MULTIPLE : eMULTIPLICITY.ONCE; pattern = multi == eMULTIPLICITY.MULTIPLE ? pattern.Substring(0, pattern.Length - 1) : pattern; int equal = pattern.IndexOf(pOptions.EqualChar, StringComparison.Ordinal); string type = equal == -1 ? null : pattern.Substring(equal + 1).ToLower(); string name = equal == -1 ? pattern : pattern.Substring(0, equal); iParamType paramType = type == null ? null : ParamTypeFactory.Create(type); if (paramType == null && role == eROLE.PASSED) { paramType = new ParamString(); } if (string.IsNullOrWhiteSpace(name)) { throw new SyntaxErrorException(Errors.DescriptionName); } string help = pHelpProvider.Get(name); return(new Description(name, help, role, paramType, scope, multi)); }