com.asakusafw.runtime.io.text

Class TextUtil

java.lang.Object

com.asakusafw.runtime.io.text.TextUtil

public final class TextUtil
extends Object

Utilities about text.

Since:

0.9.1

Method Summary

Modifier and Type	Method and Description
static int	countLeadingWhitespaces(CharSequence cs, int offset, int length) Returns the number of leading whitespace characters in the given character sequence range.
static int	countTrailingWhitespaces(CharSequence cs, int offset, int length) Returns the number of trailing whitespace characters in the given character sequence range.
static byte	parseByte(CharSequence cs, int offset, int length) Parses a character sequence which may represent a byte value.
static BigDecimal	parseDecimal(CharSequence cs, int offset, int length) Parses a character sequence which may represent a decimal value.
static double	parseDouble(CharSequence cs, int offset, int length) Parses a character sequence which may represent a double value.
static float	parseFloat(CharSequence cs, int offset, int length) Parses a character sequence which may represent a float value.
static int	parseInt(CharSequence cs, int offset, int length) Parses a character sequence which may represent a int value.
static long	parseLong(CharSequence cs, int offset, int length) Parses a character sequence which may represent a long value.
static short	parseShort(CharSequence cs, int offset, int length) Parses a character sequence which may represent a short value.
static String	quote(CharSequence cs) Quotes the given string as Java string literal style, and returns it.
static void	quoteTo(CharSequence cs, StringBuilder target) Quotes the given string as Java string literal style, and puts it into the given buffer.

Methods inherited from class java.lang.Object

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

Method Detail

quote

public static String quote(CharSequence cs)

Quotes the given string as Java string literal style, and returns it.

Parameters:

cs - the source string

Returns:

the quoted string

quoteTo

public static void quoteTo(CharSequence cs,
                           StringBuilder target)

Quotes the given string as Java string literal style, and puts it into the given buffer.

Parameters:

cs - the source string

target - the destination buffer

countLeadingWhitespaces

public static int countLeadingWhitespaces(CharSequence cs,
                                          int offset,
                                          int length)

Returns the number of leading whitespace characters in the given character sequence range.

Parameters:

cs - the target character sequence

offset - the character (the number of 16-bit char) offset in the target sequence

length - the character (the number of 16-bit char) length

Returns:

the number of leading white space characters

countTrailingWhitespaces

public static int countTrailingWhitespaces(CharSequence cs,
                                           int offset,
                                           int length)

Returns the number of trailing whitespace characters in the given character sequence range.

Parameters:

cs - the target character sequence

offset - the character (the number of 16-bit char) offset in the target sequence

length - the character (the number of 16-bit char) length

Returns:

the number of trailing white space characters

parseByte

public static byte parseByte(CharSequence cs,
                             int offset,
                             int length)

Parses a character sequence which may represent a byte value.

Parameters:

cs - the target character sequence

offset - the character (the number of 16-bit char) offset in the target sequence

length - the character (the number of 16-bit char) length

Returns:

the parsed decimal value

Throws:

IllegalArgumentException - if the character sequence is wrong

parseShort

public static short parseShort(CharSequence cs,
                               int offset,
                               int length)

Parses a character sequence which may represent a short value.

Parameters:

cs - the target character sequence

offset - the character (the number of 16-bit char) offset in the target sequence

length - the character (the number of 16-bit char) length

Returns:

the parsed decimal value

Throws:

IllegalArgumentException - if the character sequence is wrong

parseInt

public static int parseInt(CharSequence cs,
                           int offset,
                           int length)

Parses a character sequence which may represent a int value.

Parameters:

cs - the target character sequence

offset - the character (the number of 16-bit char) offset in the target sequence

length - the character (the number of 16-bit char) length

Returns:

the parsed decimal value

Throws:

IllegalArgumentException - if the character sequence is wrong

parseLong

public static long parseLong(CharSequence cs,
                             int offset,
                             int length)

Parses a character sequence which may represent a long value.

Parameters:

cs - the target character sequence

offset - the character (the number of 16-bit char) offset in the target sequence

length - the character (the number of 16-bit char) length

Returns:

the parsed decimal value

Throws:

IllegalArgumentException - if the character sequence is wrong

parseDecimal

public static BigDecimal parseDecimal(CharSequence cs,
                                      int offset,
                                      int length)

Parses a character sequence which may represent a decimal value.

Parameters:

cs - the target character sequence

offset - the character (the number of 16-bit char) offset in the target sequence

length - the character (the number of 16-bit char) length

Returns:

the parsed decimal value

Throws:

IllegalArgumentException - if the character sequence is wrong

parseFloat

public static float parseFloat(CharSequence cs,
                               int offset,
                               int length)

Parses a character sequence which may represent a float value.

Parameters:

cs - the target character sequence

offset - the character (the number of 16-bit char) offset in the target sequence

length - the character (the number of 16-bit char) length

Returns:

the parsed decimal value

Throws:

IllegalArgumentException - if the character sequence is wrong

parseDouble

public static double parseDouble(CharSequence cs,
                                 int offset,
                                 int length)

Parses a character sequence which may represent a double value.

Parameters:

cs - the target character sequence

offset - the character (the number of 16-bit char) offset in the target sequence

length - the character (the number of 16-bit char) length

Returns:

the parsed decimal value

Throws:

IllegalArgumentException - if the character sequence is wrong