Package org.apache.logging.log4j.util

Class StringBuilders

java.lang.Object

org.apache.logging.log4j.util.StringBuilders

public final class StringBuilders
extends Object

Consider this class private.

Method Summary

Modifier and Type	Method	Description
static StringBuilder	appendDqValue(StringBuilder sb, Object value)	Appends in the following format: double quoted value.
static StringBuilder	appendKeyDqValue(StringBuilder sb, String key, Object value)	Appends in the following format: key=double quoted value.
static StringBuilder	appendKeyDqValue(StringBuilder sb, Map.Entry<String,String> entry)	Appends in the following format: key=double quoted value.
static boolean	appendSpecificTypes(StringBuilder stringBuilder, Object obj)
static void	appendValue(StringBuilder stringBuilder, Object obj)	Appends a text representation of the specified object to the specified StringBuilder, if possible without allocating temporary objects.
static boolean	equals(CharSequence left, int leftOffset, int leftLength, CharSequence right, int rightOffset, int rightLength)	Returns true if the specified section of the left CharSequence equals the specified section of the right CharSequence.
static boolean	equalsIgnoreCase(CharSequence left, int leftOffset, int leftLength, CharSequence right, int rightOffset, int rightLength)	Returns true if the specified section of the left CharSequence equals, ignoring case, the specified section of the right CharSequence.
static void	escapeJson(StringBuilder toAppendTo, int start)
static void	escapeXml(StringBuilder toAppendTo, int start)
static void	trimToMaxSize(StringBuilder stringBuilder, int maxSize)	Ensures that the char[] array of the specified StringBuilder does not exceed the specified number of characters.

Methods inherited from class java.lang.Object

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

Method Detail

appendDqValue

public static StringBuilder appendDqValue(StringBuilder sb,
                                          Object value)

Appends in the following format: double quoted value.

Parameters:

sb - a string builder

value - a value

Returns:

"value"

appendKeyDqValue

public static StringBuilder appendKeyDqValue(StringBuilder sb,
                                             Map.Entry<String,String> entry)

Appends in the following format: key=double quoted value.

Parameters:

sb - a string builder

entry - a map entry

Returns:

key="value"

appendKeyDqValue

public static StringBuilder appendKeyDqValue(StringBuilder sb,
                                             String key,
                                             Object value)

Appends in the following format: key=double quoted value.

Parameters:

sb - a string builder

key - a key

value - a value

Returns:

the specified StringBuilder

appendValue

public static void appendValue(StringBuilder stringBuilder,
                               Object obj)

Appends a text representation of the specified object to the specified StringBuilder, if possible without allocating temporary objects.

Parameters:

stringBuilder - the StringBuilder to append the value to

obj - the object whose text representation to append to the StringBuilder

appendSpecificTypes

public static boolean appendSpecificTypes(StringBuilder stringBuilder,
                                          Object obj)

equals

public static boolean equals(CharSequence left,
                             int leftOffset,
                             int leftLength,
                             CharSequence right,
                             int rightOffset,
                             int rightLength)

Returns true if the specified section of the left CharSequence equals the specified section of the right CharSequence.

Parameters:

left - the left CharSequence

leftOffset - start index in the left CharSequence

leftLength - length of the section in the left CharSequence

right - the right CharSequence to compare a section of

rightOffset - start index in the right CharSequence

rightLength - length of the section in the right CharSequence

Returns:

true if equal, false otherwise

equalsIgnoreCase

public static boolean equalsIgnoreCase(CharSequence left,
                                       int leftOffset,
                                       int leftLength,
                                       CharSequence right,
                                       int rightOffset,
                                       int rightLength)

Returns true if the specified section of the left CharSequence equals, ignoring case, the specified section of the right CharSequence.

Parameters:

left - the left CharSequence

leftOffset - start index in the left CharSequence

leftLength - length of the section in the left CharSequence

right - the right CharSequence to compare a section of

rightOffset - start index in the right CharSequence

rightLength - length of the section in the right CharSequence

Returns:

true if equal ignoring case, false otherwise

trimToMaxSize

public static void trimToMaxSize(StringBuilder stringBuilder,
                                 int maxSize)

Ensures that the char[] array of the specified StringBuilder does not exceed the specified number of characters. This method is useful to ensure that excessively long char[] arrays are not kept in memory forever.

Parameters:

stringBuilder - the StringBuilder to check

maxSize - the maximum number of characters the StringBuilder is allowed to have

Since:

2.9

escapeJson

public static void escapeJson(StringBuilder toAppendTo,
                              int start)

escapeXml

public static void escapeXml(StringBuilder toAppendTo,
                             int start)