Module org.refcodes.cli
Package org.refcodes.cli

Interface Term

All Superinterfaces:
org.refcodes.mixin.DescriptionAccessor, org.refcodes.exception.ExceptionAccessor<ArgsSyntaxException>, MatchCountAccessor, org.refcodes.mixin.Resetable, org.refcodes.mixin.Schemable, Synopsisable
All Known Subinterfaces:
Condition, Operand<T>, Option<T>, PropertyOption<T>
All Known Implementing Classes:
AbstractCondition, AbstractOperand, AbstractOption, AbstractPropertyOption, AllCondition, AndCondition, AnyCondition, ArrayOperand, ArrayOption, BooleanOption, BooleanProperty, CasesCondition, CharOption, CharProperty, CleanFlag, ConfigOption, ConfigProperty, DaemonFlag, DebugFlag, DoubleOption, DoubleProperty, EnumOption, EnumProperty, FileOption, FileProperty, Flag, FloatOption, FloatProperty, ForceFlag, HelpFlag, InitFlag, IntOption, IntProperty, LongOption, LongProperty, NoneOperand, Operation, OrCondition, QuietFlag, StringOperand, StringOption, StringProperty, SysInfoFlag, VerboseFlag, XorCondition
public interface Term extends org.refcodes.mixin.Resetable, Synopsisable, org.refcodes.mixin.DescriptionAccessor, org.refcodes.mixin.Schemable, org.refcodes.exception.ExceptionAccessor<ArgsSyntaxException>, MatchCountAccessor
A Term defines the methods at least required when building a command line arguments syntax tree for traversing the syntax tree; either for parsing command line arguments or for constructing the command line arguments syntax. By providing various implementations of the Term's subclasses such as Operand, Option or Condition, a command line arguments syntax tree can be constructed. This syntax tree can be use to create a human readable (verbose) command line arguments syntax and to parse an array of command line arguments for determining the Operands', the Flages' or the Options' values.

  • Method Details

    • parseArgs

      default Operand<?>[] parseArgs(String[] aArgs, CliContext aCliCtx) throws ArgsSyntaxException
      Parses the provided command line arguments and determines the according values by evaluating this Term instance or, in case of being a node in the syntax tree (such as a Condition, traversing the child Term instances' parseArgs(String[], String[], CliContext) methods. In case of successfully parsing this Term and / or the child Term instances, the evaluated command line arguments are returned: Depending on the Term subclasses representing the evaluated command line arguments, instances of Flag classes, Option classes or Operand classes may be found in the result. In case of parsing failure, an according exception is thrown. ATTENTION: This method does not test for superfluous command line arguments being passed; e.g. command line arguments not being evaluated by any of the Term instance being traversed. This method is commonly used by a root Term's ParseArgs.evalArgs(String[]) method, which delegates to the parseArgs(String[], String[], CliContext) method and after which it determines whether there are superfluous arguments to be taken care of (by throwing an according exception). Business logic therefore should invoke the root node's parseArgs(String[], String[], CliContext) method as ignoring superfluous command line arguments will aCause unexpected behavior from the point of view of the invoker.
      Parameters:
      aArgs - The command line arguments to be parsed.
      aCliCtx - The CliContext to use when parsing the arguments.
      Returns:
      The list of evaluated command line arguments being instances of the Operand interfaces or its sub-types.
      Throws:
      ArgsSyntaxException - thrown in case of a command line arguments mismatch regarding provided and expected args.

    • parseArgs

      Operand<?>[] parseArgs(String[] aArgs, String[] aOptions, CliContext aCliContext) throws ArgsSyntaxException
      Parses the provided command line arguments and determines the according values by evaluating this Term instance or, in case of being a node in the syntax tree (such as a Condition, traversing the child Term instances' parseArgs(String[], String[], CliContext) methods. In case of successfully parsing this Term and / or the child Term instances, the evaluated command line arguments are returned: Depending on the Term subclasses representing the evaluated command line arguments, instances of Flag classes, Option classes or Operand classes may be found in the result. In case of parsing failure, an according exception is thrown. ATTENTION: This method does not test for superfluous command line arguments being passed; e.g. command line arguments not being evaluated by any of the Term instance being traversed. This method is commonly used by a root Term's ParseArgs.evalArgs(String[]) method, which delegates to the parseArgs(String[], String[], CliContext) method and after which it determines whether there are superfluous arguments to be taken care of (by throwing an according exception). Business logic therefore should invoke the root node's parseArgs(String[], String[], CliContext) method as ignoring superfluous command line arguments will aCause unexpected behavior from the point of view of the invoker.
      Parameters:
      aArgs - The command line arguments to be parsed.
      aOptions - The list of options (short and as well as long) which are reserved and cannot be used as value.
      aCliContext - the cli context
      Returns:
      The list of evaluated command line arguments being instances of the Operand interfaces or its sub-types.
      Throws:
      ArgsSyntaxException - thrown in case of a command line arguments mismatch regarding provided and expected args.

    • toSchema

      CliSchema toSchema()
      Specified by:
      toSchema in interface org.refcodes.mixin.Schemable

    • toSynopsis

      default String toSynopsis(CliContext aCliCtx)
      Returns the human readable (verbose) syntax of implementing class ATTENTION: As of different parenthesis settings for some notations regarding the root Term and the child Terms, the method toSyntax(CliContext) is called from inside a Term hierarchy. In case the syntax is to be retrieved from the root Term or an encapsulating and different type, then the applicable method to be called is Synopsisable.toSynopsis(SyntaxNotation), as for some notations it will for example not create the most outer braces.
      Specified by:
      toSynopsis in interface Synopsisable
      Parameters:
      aCliCtx - The CliContext for which the syntax is being generated.
      Returns:
      The human readable (verbose) command line arguments syntax.

    • toSyntax

      default String toSyntax()
      This method is to be called from inside the Term hierarchy; use the method Synopsisable.toSynopsis(SyntaxNotation) in case you invoke syntax retrieval from the root Term. Returns the human readable (verbose) syntax of this Term instance including, in case of being a node in the syntax tree (such as a Condition, the syntax of the child Term instances. ATTENTION: As of different parenthesis settings for some notations regarding the root Term and the child Terms, the method toSyntax(CliContext) is called from inside the Term hierarchy. In case the syntax is to be retrieved from the root Term, then the applicable method to be called is Synopsisable.toSynopsis(SyntaxNotation), as for some notations it will for example not create the most outer braces. This method uses the SyntaxNotation.LOGICAL be default!
      Returns:
      The human readable (verbose) command line arguments syntax.

    • toSyntax

      String toSyntax(CliContext aCliCtx)
      This method is to be called from inside the Term hierarchy; use the method Synopsisable.toSynopsis(SyntaxNotation) in case you invoke syntax retrieval from the root Term. Returns the human readable (verbose) syntax of this Term instance including, in case of being a node in the syntax tree (such as a Condition, the syntax of the child Term instances. ATTENTION: As of different parenthesis settings for some notations regarding the root Term and the child Terms, the method toSyntax(CliContext) is called from inside the Term hierarchy. In case the syntax is to be retrieved from the root Term, then the applicable method to be called is Synopsisable.toSynopsis(SyntaxNotation), as for some notations it will for example not create the most outer braces.
      Parameters:
      aCliCtx - The CliContext for which the syntax is being generated.
      Returns:
      The human readable (verbose) command line arguments syntax.

    • toSyntax

      default String toSyntax(String aOptEscCode, String aParamEscCode, String aResetEscCode)
      This method is to be called from inside the Term hierarchy; use the method Synopsisable.toSynopsis(SyntaxNotation) in case you invoke syntax retrieval from the root Term. Returns the human readable (verbose) syntax of this Term instance including, in case of being a node in the syntax tree (such as a Condition, the syntax of the child Term instances. ATTENTION: As of different parenthesis settings for some notations regarding the root Term and the child Terms, the method toSyntax(CliContext) is called from inside the Term hierarchy. In case the syntax is to be retrieved from the root Term, then the applicable method to be called is Synopsisable.toSynopsis(SyntaxNotation), as for some notations it will for example not create the most outer braces. This method uses the SyntaxNotation.LOGICAL be default!
      Parameters:
      aOptEscCode - The escape code to be used when processing an option, e.g. this can be an ANSI Escape-Code to highlight the option.
      aParamEscCode - The escape code to be used when processing a keyword, e.g. this can be an ANSI Escape-Code to highlight the option and/or parameters.
      aResetEscCode - The escape code to close (reset) any Escape-Code being set before.
      Returns:
      The human readable (verbose) command line arguments syntax.

    • toSyntax

      default String toSyntax(SyntaxNotation aSyntaxNotation)
      This method is to be called from inside the Term hierarchy; use the method Synopsisable.toSynopsis(SyntaxNotation) in case you invoke syntax retrieval from the root Term. Returns the human readable (verbose) syntax of this Term instance including, in case of being a node in the syntax tree (such as a Condition, the syntax of the child Term instances. ATTENTION: As of different parenthesis settings for some notations regarding the root Term and the child Terms, the method toSyntax(CliContext) is called from inside the Term hierarchy. In case the syntax is to be retrieved from the root Term, then the applicable method to be called is Synopsisable.toSynopsis(SyntaxNotation), as for some notations it will for example not create the most outer braces.
      Parameters:
      aSyntaxNotation - The syntax notation used for generating the command line arguments syntax.
      Returns:
      The human readable (verbose) command line arguments syntax.

    • toSyntax

      default String toSyntax(SyntaxNotation aSyntaxNotation, String aOptEscCode, String aParamEscCode, String aResetEscCode)
      This method is to be called from inside the Term hierarchy; use the method Synopsisable.toSynopsis(SyntaxNotation) in case you invoke syntax retrieval from the root Term. Returns the human readable (verbose) syntax of this Term instance including, in case of being a node in the syntax tree (such as a Condition, the syntax of the child Term instances. ATTENTION: As of different parenthesis settings for some notations regarding the root Term and the child Terms, the method toSyntax(SyntaxNotation, String, String, String) is called from inside the Term hierarchy. In case the syntax is to be retrieved from the root Term, then the applicable method to be called is Synopsisable.toSynopsis(SyntaxNotation), as for some notations it will for example not create the most outer braces.
      Parameters:
      aSyntaxNotation - The syntax notation used for generating the command line arguments syntax.
      aOptEscCode - The escape code to be used when processing an option, e.g. this can be an ANSI Escape-Code to highlight the option.
      aParamEscCode - The escape code to be used when processing a keyword, e.g. this can be an ANSI Escape-Code to highlight the option and/or parameters.
      aResetEscCode - The escape code to close (reset) any Escape-Code being set before.
      Returns:
      The human readable (verbose) command line arguments syntax.

    • toValue

      <V> V toValue(String aAlias)
      Searches for a value being set for the given for given alias in the syntax tree parsing the command line arguments; if a node in the syntax tree has a value for the given alias, then this value is returned.
      Type Parameters:
      V - The type of the value being expected.
      Parameters:
      aAlias - The alias for which to seek for a value being set.
      Returns:
      The according value or null if none has been set for the given alias.

    • getMatchCount

      int getMatchCount()
      Determines the number of args being matched by the parseArgs(String[], CliContext) (and similar) method(s) of the according syntax. This way we can determine which part of the syntax (tree) had most matches.
      Specified by:
      getMatchCount in interface MatchCountAccessor
      Returns:
      The number of args matching the according syntax (tree).

    • getException

      ArgsSyntaxException getException()
      Retrieves the ArgsSyntaxException exception in case invoking parseArgs(String[], CliContext) failed. The exception (and the according suppressed ones alongside the causes) does not necessarily have been thrown by the parseArgs(String[], CliContext) method depending on the semantics of the Term handing the exception (the AnyCondition provides any exceptions it caught even though it did not throw them as of its semantics).
      Specified by:
      getException in interface org.refcodes.exception.ExceptionAccessor<ArgsSyntaxException>
      Returns:
      The ArgsSyntaxException exception occurring while parsing the arguments.