Package gaiasky.util.parse

Class Parser

java.lang.Object
gaiasky.util.parse.Parser
public final class Parser
extends java.lang.Object
Parser utilities.
Since:
10/02/2015 14:29:47

  • Constructor Summary

    Constructors
    Constructor Description
    Parser()  

  • Method Summary

    Modifier and Type Method Description
    static boolean parseBoolean​(java.lang.Object what)
    Method used to parse accepted boolean values in incoming messages
    static double parseDouble​(java.lang.String input)
    Quick double string parser that can handle negative and positive doubles but not exponents.
    static double parseDoubleException​(java.lang.String input)
    Quick double string parser that can handle negative and positive doubles but not exponents.
    static float parseFloat​(java.lang.String input)
    Convenience method which uses the double parser and casts the result.
    static float[] parseFloatArray​(java.lang.String input)
    Parses a float array in the form '[a, b, c, ...]
    static float[] parseFloatArrayException​(java.lang.String input)
    Parses a float array in the form '[a, b, c, ...]
    static float parseFloatException​(java.lang.String input)
    Convenience method which uses the double parser and casts the result.
    static int parseInt​(java.lang.String str)
    Parses an integer.
    static int parseIntException​(java.lang.String str)
    Parses an integer.
    static long parseLong​(java.lang.String input)
    Quick long string parser that can handle negative and positive values.
    static long parseLongException​(java.lang.String input)
    Quick long string parser that can handle negative and positive values.

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • Parser

      public Parser()

  • Method Details

    • parseLong

      public static long parseLong​(java.lang.String input)

      Quick long string parser that can handle negative and positive values.

      Parser supports leading/trailing whitespace.

      Parameters:
      input - String to parse
      Returns:
      Parsed long or 0 if the parsing fails

    • parseLongException

      public static long parseLongException​(java.lang.String input) throws java.lang.NumberFormatException

      Quick long string parser that can handle negative and positive values.

      Parser supports leading/trailing whitespace.

      Parameters:
      input - String to parse
      Returns:
      Parsed long or 0 if the parsing fails
      Throws:
      java.lang.NumberFormatException - If the given input can not be parsed

    • parseDouble

      public static double parseDouble​(java.lang.String input)

      Quick double string parser that can handle negative and positive doubles but not exponents.

      Parser supports NaN, +/-Inf, exponents and leading/trailing whitespace.

      Parser is mostly locale unaware except for dot and comma for decimal separator.

      Parameters:
      input - String to parse
      Returns:
      Parsed double or Double.NaN if the parsing fails See also parseDoubleException(String) If exceptions on invalid input is necessary

    • parseDoubleException

      public static double parseDoubleException​(java.lang.String input) throws java.lang.NumberFormatException

      Quick double string parser that can handle negative and positive doubles but not exponents.

      Parser supports NaN, +/-Inf and leading/trailing whitespace.

      Parser is mostly locale unaware except for dot and comma for decimal separator.

      Parameters:
      input - String to parse
      Returns:
      Parsed double or Double.NaN if the parsing fails
      Throws:
      java.lang.NumberFormatException - If the input string is invalid

    • parseBoolean

      public static boolean parseBoolean​(java.lang.Object what)
      Method used to parse accepted boolean values in incoming messages
      Parameters:
      what - What to parse
      Returns:
      True or false (also default return) depending on the value of what

    • parseInt

      public static int parseInt​(java.lang.String str)
      Parses an integer. If the input is not a valid integer representation it returns 0.
      Parameters:
      str - The input string.
      Returns:
      The integer representation of the string.

    • parseIntException

      public static int parseIntException​(java.lang.String str) throws java.lang.NumberFormatException
      Parses an integer. Throws a NumberFormatException if the input is not a valid integer representation.
      Parameters:
      str - The input string.
      Returns:
      The integer representation of the string.
      Throws:
      java.lang.NumberFormatException

    • parseFloat

      public static float parseFloat​(java.lang.String input)
      Convenience method which uses the double parser and casts the result. It will not throw Please check parseDouble(String).
      Parameters:
      input - The input string.
      Returns:
      The parsed float, or 0 if the parsing failed.

    • parseFloatException

      public static float parseFloatException​(java.lang.String input) throws java.lang.NumberFormatException
      Convenience method which uses the double parser and casts the result. Please check parseDoubleException(String)
      Parameters:
      input - The input string.
      Returns:
      The parsed float, or Float.NaN if the parsing failed.
      Throws:
      java.lang.NumberFormatException - if the parsing failed.

    • parseFloatArray

      public static float[] parseFloatArray​(java.lang.String input)
      Parses a float array in the form '[a, b, c, ...]
      Parameters:
      input - The input string.
      Returns:
      The parsed float array, or null if the parsing failed.

    • parseFloatArrayException

      public static float[] parseFloatArrayException​(java.lang.String input) throws java.lang.NumberFormatException
      Parses a float array in the form '[a, b, c, ...]
      Parameters:
      input - The input string.
      Returns:
      The parsed float array, or null if the parsing failed.
      Throws:
      java.lang.NumberFormatException