Package gnu.lists

Class Strings

java.lang.Object
gnu.lists.Strings
public class Strings extends Object
Various static utility methods for general strings (CharSeqs).

  • Constructor Details

    • Strings

      public Strings()

  • Method Details

    • characterAt

      public static int characterAt(CharSequence cseq, int index)
      Get character (code point) at a offset.
      Parameters:
      index - offset measured in 16-bit code units

    • characterAt

      public static int characterAt(CharSequence cseq, int start, int end, int index)
      Get character (code point) at a offset.
      Parameters:
      index - offset measured in 16-bit code units, from begining of cseq, not frm start

    • indexByCodePoints

      public static int indexByCodePoints(CharSequence str, int index)
      Get index'th character (code point).
      Parameters:
      index - offset by code points

    • offsetByCodePoints

      public static int offsetByCodePoints(CharSequence str, int offset, int cuStart, int cpStart)
      Like offsetByCodePoints, but optimize if an IString.
      Parameters:
      offset - number of code points beyond start index.
      cuStart - start index in code units (Java chars)
      cpStart - start index in Unicode code points

    • sizeInCodePoints

      public static int sizeInCodePoints(CharSequence str)

    • makeUpperCase

      public static void makeUpperCase(CharSeq str)
      Change every character to be uppercase.

    • makeLowerCase

      public static void makeLowerCase(CharSeq str)
      Change every character to be lowercase.

    • makeCapitalize

      public static void makeCapitalize(CharSeq str)
      Capitalize this string. Change first character of each word to titlecase, and change the other characters to lowercase.

    • toJson

      public static String toJson(CharSequence str)

    • printJson

      public static void printJson(CharSequence str, Appendable ps)

    • printQuoted

      public static void printQuoted(CharSequence str, Appendable ps, int escapes)
      Print a string with quotes and escapes.
      Parameters:
      escapes - The value 0 means only escape '"' and '\\'; the value 1 means escape standard escape characters like '\\b'; the value 2 means escape all non-ascii or control characters; the value 3 means follow the JSON standard.

    • copyInto

      public static void copyInto(CharSequence src, int start, int end, CharSeq dst, int at)

    • indirectIndexed

      public static IString indirectIndexed(CharSequence base, IntSequence indexes)
      Make a read-only substring, generalized to arbitrary index sequences. The indexes are in terms of code points (character) offsets.

    • substring

      public static CharSequence substring(CharSequence base, int start, int end)
      Make a read-only substring. The start and end are in terms of code unit (16-bit char).

    • fromUtf8

      public static String fromUtf8(byte[] bytes, int start, int length)

    • toUtf16

      public static byte[] toUtf16(CharSequence str, int start, int end, boolean bigEndian, boolean writeBOM)

    • compareTo

      public static int compareTo(CharSequence str1, CharSequence str2)

    • replicate

      public static String replicate(int from, int to, boolean suppliedTo, CharSequence string, int start, int end, boolean suppliedEnd)