Packages

•  package root

  Definition Classes

  root

•  package de

  Definition Classes

  root

•  package h2b

  Definition Classes

  de

•  package scala

  Definition Classes

  h2b

•  package lib

  Definition Classes

  scala

•  package util

  This is a Scala library of programming utilities.

  This is a Scala library of programming utilities. It is not intended to comprise a systematic collection but contains some tools that may be useful for some applications.

  Some highlights are a number of probability distributions, a command-line interface, a configuration package, an RSS utility, a class to handle temporary directories, control structures, a logger trait and a timer.

  Definition Classes

  lib

•  package cli

  Define the parameters of your command line as instances of

  Define the parameters of your command line as instances of

  - FlagParameter: no specific value, just signals that it is there,

  - HelpParameter: signals that the user needs some help (if given as a command-line argument, other parameters are not computed and no parse exceptions are thrown),

  - ValueParameter[V]: has exactly one value of type V,

  - ListParameter[V]: has a number of values of type V and

  - MainParameter: has a number of String values.

  ValueParameter[V] and ListParameter[V] need a converter to convert a string to the value type V. You might want to import the object Converter that provides converters for standard data types implicitly by:

  import de.h2b.scala.lib.util.cli.Converter._

  Then create a new instance of CommandLine with a set of parameters. The resulting object then can parse a string sequence or an array of strings for parameters and their values. If something goes wrong, either a ParameterException (some argument does not obey to the format specified by its parameter) or a CommandLineException (something is wrong with the arguments as a whole) is thrown.

  Finally query the original parameter instances for its value or values field.

  The usage method of CommandLine constructs a string suitable for a usage message.

  Definition Classes

  util

  Example:

  1. import de.h2b.scala.lib.util.cli._
     import de.h2b.scala.lib.util.cli.Converter._
     val overwrite = FlagParameter(Set("-o", "--overwrite"), "overwrite target")
     val mode = ValueParameter(Set("-m"), "mode", default=Some(0))
     val main = MainParameter("source target", arity=2)
     CommandLine(Set(overwrite, mode, main)).parse("-o -m 1 from to".split(' '))
     println(overwrite.value) //> Some(true)
     println(mode.value) //> Some(1)
     println(main.values) //> Some(WrappedArray(from, to))

•  package config

  This package provides various configuration sources under a common trait Config, which is basically an immutable map.

  This package provides various configuration sources under a common trait Config, which is basically an immutable map. The following implementations are available:

  - ArgsConfig loads key/value pairs from an array of strings: array elements that contain a separator char (defined by ArgsConfig.SeparatorChar) are considered as key/value pairs, while elements not consumed by this rule can be retrieved by the remaining array (makes it suitable to scan a command line for such key/value pairs and parsing the rest with tools like described in [U1 Command-Line Interface](#u1-command-line-interface).

  - FileConfig loads key/value pairs from a specified resource file which must conform to the java.util.Properties#load(InputStream) method; there is also a factory method where the resource is looked up under the modified package name of a specified class.

  - BundleConfig loads key/value pairs from a resource bundle (according to the java.util.ResourceBundle class) of a specified base name using a locale option; there is also a factory method where the resource bundle is looked up under the modified package name of a specified class.

  * SystemPropertiesConfig is a Config object that represents the system properties of the JVM.

  * SystemEnvironmentConfig is a Config object that represents the system environment; note that the system may not support environment variables -- in this case, this object is empty.

  Multiple Configs can be combined using the standard map ++ operators, yielding an overall Config.

  Definition Classes

  util

  Example:

  1. import de.h2b.scala.lib.util.config._
     val argsConfig = ArgsConfig("-x key1=val1 /y key2=val2 abc".split(' '))
     val sysConfig = SystemPropertiesConfig
     val otherConfig = Config("one"->1, "two"->2, "three"->3)
     val config = argsConfig ++ sysConfig ++ otherConfig
     println(config.get("key1")) //> Some(val1)
     println(config.get("java.version")) //> Some(1.8.0_121)
     println(config.get("two")) //> Some(2)
     println(argsConfig.remaining.mkString(" ")) //> -x /y abc

• Builder
• ConsoleLogger
• Control
• JavaCollectionConverters
• Level
• Logger
• MsTimer
• NsTimer
• PerformanceMeter
• StringCompare
• StringCompareIgnoreSet
• StringConv
• StringOps
• Timer

de.h2b.scala.lib.util

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