pro.fessional.meepo.util

Class Seek

java.lang.Object

pro.fessional.meepo.util.Seek

public class Seek
extends Object

Since:

2020-10-16

Author:

trydofor

Constructor Summary

Constructors

Constructor and Description
Seek()

Method Summary

Modifier and Type	Method and Description
static int	countPrevToken(String txt, int off, String tkn) count the token occurrences form offset (backward)
static int	indent(CharSequence text, int end)
static boolean	isAlnum(char c)
static boolean	isSplit(char c)
static boolean	isWhite(char c)
static boolean	notBlank(char c)
static boolean	notWhite(char c)
static int	seekFollow(String txt, int off, int end, String tkn)
static int[]	seekNextAlnum(CharSequence txt, int off, int end)
static int	seekNextEdge(CharSequence txt, int off) the right of edge (include `\n`), index is end
static int	seekNextGrace(CharSequence txt, int off, int end)
static int	seekNextSplit(CharSequence txt, int off, int end)
static int[]	seekNextToken(String txt, int off, int end, String tkn, String esc) find next token (no escape) and escaped count (forward)
static int	seekNextWhite(CharSequence txt, int off, int end)
static int[]	seekNextWords(CharSequence txt, int off, int end)
static int	seekPrevEdge(CharSequence txt, int end) the left of edge (exclude `\n`), index is start
static int	seekPrevGrace(CharSequence txt, int off, int end)
static int[]	seekPrevToken(String txt, int off, int end, String tkn, String esc) find prev token (no escape) and escaped count (backward)
static int	seekPrevWhite(CharSequence txt, int off, int end)
static int[]	seekPrevWords(CharSequence txt, int off, int end)
static int	seekToken(String txt, int off, int end, String tkn, boolean echo) Find `token` string within a range between `off` and `end`.
static int[]	trimBlank(CharSequence txt, int off, int end)

Methods inherited from class java.lang.Object

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

Constructor Detail

Seek

public Seek()

Method Detail

seekToken

public static int seekToken(String txt,
                            int off,
                            int end,
                            String tkn,
                            boolean echo)

Find `token` string within a range between `off` and `end`.

Parameters:

txt - the source string

off - offset (include)

end - the end (exclude)

tkn - token

echo - whether repetition char

Returns:

the start index, or -1 if not found

seekFollow

public static int seekFollow(String txt,
                             int off,
                             int end,
                             String tkn)

seekPrevGrace

public static int seekPrevGrace(CharSequence txt,
                                int off,
                                int end)

seekNextGrace

public static int seekNextGrace(CharSequence txt,
                                int off,
                                int end)

seekPrevWhite

public static int seekPrevWhite(CharSequence txt,
                                int off,
                                int end)

seekNextWhite

public static int seekNextWhite(CharSequence txt,
                                int off,
                                int end)

seekPrevWords

public static int[] seekPrevWords(CharSequence txt,
                                  int off,
                                  int end)

seekNextWords

public static int[] seekNextWords(CharSequence txt,
                                  int off,
                                  int end)

seekNextSplit

public static int seekNextSplit(CharSequence txt,
                                int off,
                                int end)

seekNextAlnum

public static int[] seekNextAlnum(CharSequence txt,
                                  int off,
                                  int end)

trimBlank

public static int[] trimBlank(CharSequence txt,
                              int off,
                              int end)

seekPrevEdge

public static int seekPrevEdge(CharSequence txt,
                               int end)

the left of edge (exclude `\n`), index is start

Parameters:

txt - source string

end - end (exclude)

Returns:

index of edge

seekNextEdge

public static int seekNextEdge(CharSequence txt,
                               int off)

the right of edge (include `\n`), index is end

Parameters:

txt - the source string

off - offset (include)

Returns:

index of edge

isAlnum

public static boolean isAlnum(char c)

isSplit

public static boolean isSplit(char c)

isWhite

public static boolean isWhite(char c)

notWhite

public static boolean notWhite(char c)

notBlank

public static boolean notBlank(char c)

indent

public static int indent(CharSequence text,
                         int end)

countPrevToken

public static int countPrevToken(String txt,
                                 int off,
                                 String tkn)

count the token occurrences form offset (backward)

Parameters:

txt - the source string

off - offset (include)

tkn - token

Returns:

the count

seekPrevToken

public static int[] seekPrevToken(String txt,
                                  int off,
                                  int end,
                                  String tkn,
                                  String esc)

find prev token (no escape) and escaped count (backward)

Parameters:

txt - the source string

off - offset (include)

end - end (exclude)

tkn - token

esc - escape char

Returns:

token offset and escaped count

seekNextToken

public static int[] seekNextToken(String txt,
                                  int off,
                                  int end,
                                  String tkn,
                                  String esc)

find next token (no escape) and escaped count (forward)

Parameters:

txt - the source string

off - offset (include)

end - end (exclude)

tkn - token

esc - escape char

Returns:

token offset and escaped count