Package org.apache.commons.exec.environment

Class EnvironmentUtils

  • public class EnvironmentUtils
extends java.lang.Object
    Wraps environment variables.

    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      private EnvironmentUtils()
      Hides constructor.

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static void addVariableToEnvironment​(java.util.Map<java.lang.String,​java.lang.String> environment, java.lang.String keyAndValue)
      Adds a key/value pair to the given environment.
      static java.util.Map<java.lang.String,​java.lang.String> getProcEnvironment()
      Gets the list of environment variables for this process.
      private static java.lang.String[] parseEnvironmentVariable​(java.lang.String keyAndValue)
      Parses a key/value pair into a String[].
      private static java.lang.String toString​(java.lang.String value)  
      static java.lang.String[] toStrings​(java.util.Map<java.lang.String,​java.lang.String> environment)
      Converts a variable map as an array.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • EnvironmentUtils

        private EnvironmentUtils()
        Hides constructor.

    • Method Detail

      • addVariableToEnvironment

        public static void addVariableToEnvironment​(java.util.Map<java.lang.String,​java.lang.String> environment,
                                            java.lang.String keyAndValue)
        Adds a key/value pair to the given environment. If the key matches an existing key, the previous setting is replaced.
        Parameters:
        environment - the current environment.
        keyAndValue - the key/value pair.

      • getProcEnvironment

        public static java.util.Map<java.lang.String,​java.lang.String> getProcEnvironment()
                                                                                 throws java.io.IOException
        Gets the list of environment variables for this process. The returned map preserves the casing of a variable's name on all platforms but obeys the casing rules of the current platform during lookup, e.g. key names will be case-insensitive on Windows platforms.
        Returns:
        a map containing the environment variables, may be empty but never null.
        Throws:
        java.io.IOException - the operation failed.

      • parseEnvironmentVariable

        private static java.lang.String[] parseEnvironmentVariable​(java.lang.String keyAndValue)
        Parses a key/value pair into a String[]. It is assumed that the ky/value pair contains a '=' character.
        Parameters:
        keyAndValue - the key/value pair.
        Returns:
        a String[] containing the key and value.

      • toString

        private static java.lang.String toString​(java.lang.String value)

      • toStrings

        public static java.lang.String[] toStrings​(java.util.Map<java.lang.String,​java.lang.String> environment)
        Converts a variable map as an array.
        Parameters:
        environment - the environment to use, may be null.
        Returns:
        array of key=value assignment strings or null if and only if the input map was null.