Package org.openjdk.asmtools.asmutils

Class StringUtils

java.lang.Object

org.openjdk.asmtools.asmutils.StringUtils

public class StringUtils
extends Object

Utility class to share common tools/methods.

Field Summary

Fields

Modifier and Type	Field	Description
static BiFunction<String,List<String>,Boolean>	contains
static BiFunction<String,List<String>,Boolean>	endWith
static final char[]	hexTable

Constructor Summary

Constructors

Constructor	Description
StringUtils()

Method Summary

Modifier and Type	Method	Description
static List<String>	getPrintable(byte[] buffer, int CHARS_IN_LINE)
static List<String>	getPrintable(String rawString, int CHARS_IN_LINE)
static boolean	isOneOf(int i, char... list)	Checks that ch is in the list
static boolean	isPrintableChar(char c)
static String	mapToHexString(int[] array)
static List<String>	readUtf8String(DataInputStream in, int length, int CHARS_IN_LINE)	Reads the set of bytes if all bytes are printable then they will be printed as the string "String"; otherwise the byte array 0x0F 0xB6 0x00 0x11; The result is the list of lines for printing.
static String	removeCommentFrom(String str)	Removes Java comments from String Spaces ahead of comments will be removed; alternatively, if no spaces precede the comment, the space after it will be deleted.
static String	repeat(String str, int count)
static String	Utf8ToString(String utf8, String... enclosingString)	Converts CONSTANT_Utf8_info string to a printable string for jdis/jdes.

Methods inherited from class java.lang.Object

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

Field Details

hexTable

public static final char[] hexTable

endWith

public static BiFunction<String,List<String>,Boolean> endWith

contains

public static BiFunction<String,List<String>,Boolean> contains

Constructor Details

StringUtils

public StringUtils()

Method Details

removeCommentFrom

public static String removeCommentFrom(String str)

Removes Java comments from String Spaces ahead of comments will be removed; alternatively, if no spaces precede the comment, the space after it will be deleted.

Parameters:

str - string that contains comments

Returns:

string without comments

Utf8ToString

public static String Utf8ToString(String utf8,
 String... enclosingString)

Converts CONSTANT_Utf8_info string to a printable string for jdis/jdes.

Parameters:

utf8 - UTF8 string taken from within ConstantPool of a class file

enclosingString - strings to enclose output string

Returns:

output string for jcod/jasm

isOneOf

public static boolean isOneOf(int i,
 char... list)

Checks that ch is in the list

Parameters:

i - char for testing

list - of chars

Returns:

true if char ch found in the list

readUtf8String

public static List<String> readUtf8String(DataInputStream in,
 int length,
 int CHARS_IN_LINE)
                                   throws IOException

Reads the set of bytes if all bytes are printable then they will be printed as the string "String"; otherwise the byte array 0x0F 0xB6 0x00 0x11; The result is the list of lines for printing.

Parameters:

in - input stream to get bytes for printing

length - number of bytes

CHARS_IN_LINE - max chars in line prepared for printing

Returns:

list of lines for printing

Throws:

IOException - exception might happen while reading DataInputStream

getPrintable

public static List<String> getPrintable(byte[] buffer,
 int CHARS_IN_LINE)

Parameters:

buffer - array of bytes

Returns:

null if buffer contains at least one of non-printable bytes otherwise the list of strings encoded in the buffer

getPrintable

public static List<String> getPrintable(String rawString,
 int CHARS_IN_LINE)

Parameters:

rawString - String

Returns:

null if buffer contains at least one of non-printable bytes otherwise the list of strings split by CHARS_IN_LINE

mapToHexString

public static String mapToHexString(int[] array)

repeat

public static String repeat(String str,
 int count)

isPrintableChar

public static boolean isPrintableChar(char c)