com.ecyrd.jspwiki

Class TextUtil

java.lang.Object

com.ecyrd.jspwiki.TextUtil

public final class TextUtil
extends java.lang.Object

Contains a number of static utility methods.

Field Summary

Fields

Modifier and Type	Field and Description
static int	PASSWORD_LENGTH Length of password.

Method Summary

Modifier and Type	Method and Description
static java.lang.String	beautifyString(java.lang.String s) Adds spaces in suitable locations of the input string.
static java.lang.String	beautifyString(java.lang.String s, java.lang.String space) Adds spaces in suitable locations of the input string.
static int	countSections(java.lang.String pagedata) Counts the number of sections (separated with "----") from the page.
static java.util.Properties	createProperties(java.lang.String[] values) Creates a Properties object based on an array which contains alternatively a key and a value.
static java.lang.String	generateRandomPassword() Generate a random String suitable for use as a temporary password.
static boolean	getBooleanProperty(java.util.Properties props, java.lang.String key, boolean defval) Gets a boolean property from a standard Properties list.
static int	getIntegerProperty(java.util.Properties props, java.lang.String key, int defVal) Gets an integer-valued property from a standard Properties list.
static java.lang.String	getSection(java.lang.String pagedata, int section) Gets the given section (separated with "----") from the page text.
static java.lang.String	getStringProperty(java.util.Properties props, java.lang.String key, java.lang.String defval) Fetches a String property from the set of Properties.
static boolean	isNumber(java.lang.String s) Returns true, if the argument contains a number, otherwise false.
static boolean	isPositive(java.lang.String val) Returns true, if the string "val" denotes a positive string.
static java.lang.String	native2Ascii(java.lang.String s) Converts a string from the Unicode representation into something that can be embedded in a java properties file.
static java.lang.String	normalizePostData(java.lang.String postData) Makes sure that the POSTed data is conforms to certain rules.
static int	parseIntParameter(java.lang.String value, int defvalue) Parses an integer parameter, returning a default value if the value is null or a non-number.
static java.lang.String	repeatString(java.lang.String what, int times) A simple routine which just repeates the arguments.
static java.lang.String	replaceEntities(java.lang.String src) Replaces the relevant entities inside the String.
static java.lang.String	replaceString(java.lang.String orig, int start, int end, java.lang.String text) Replaces a part of a string with a new String.
static java.lang.String	replaceString(java.lang.String orig, java.lang.String src, java.lang.String dest) Replaces a string with an other string.
static java.lang.String	replaceStringCaseUnsensitive(java.lang.String orig, java.lang.String src, java.lang.String dest) Replaces a string with an other string.
static java.lang.String	toHexString(byte[] bytes) Generates a hexadecimal string from an array of bytes.
protected static java.lang.String	urlDecode(byte[] bytes, java.lang.String encoding) URL encoder does not handle all characters correctly.
static java.lang.String	urlDecode(java.lang.String data, java.lang.String encoding) Provides decoded version of string depending on encoding.
static java.lang.String	urlDecodeUTF8(java.lang.String utf8) As java.net.URLDecoder class, but for UTF-8 strings.
protected static java.lang.String	urlEncode(byte[] rs) java.net.URLEncoder.encode() method in JDK < 1.4 is buggy.
static java.lang.String	urlEncode(java.lang.String data, java.lang.String encoding) Provides encoded version of string depending on encoding.
static java.lang.String	urlEncodeUTF8(java.lang.String text) As java.net.URLEncoder class, but this does it in UTF8 character set.

Methods inherited from class java.lang.Object

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

Field Detail

PASSWORD_LENGTH

public static final int PASSWORD_LENGTH

Length of password. @see #generateRandomPassword()

See Also:

Constant Field Values

Method Detail

urlEncode

protected static java.lang.String urlEncode(byte[] rs)

java.net.URLEncoder.encode() method in JDK < 1.4 is buggy. This duplicates its functionality.

Parameters:

rs - the string to encode

Returns:

the URL-encoded string

urlDecode

protected static java.lang.String urlDecode(byte[] bytes,
                                            java.lang.String encoding)
                                     throws java.io.UnsupportedEncodingException,
                                            java.lang.IllegalArgumentException

URL encoder does not handle all characters correctly. See Bug parade, bug #4257115 for more information.

Thanks to CJB for this fix.

Parameters:

bytes - The byte array containing the bytes of the string

encoding - The encoding in which the string should be interpreted

Returns:

A decoded String

Throws:

java.io.UnsupportedEncodingException - If the encoding is unknown.

java.lang.IllegalArgumentException - If the byte array is not a valid string.

urlEncodeUTF8

public static java.lang.String urlEncodeUTF8(java.lang.String text)

As java.net.URLEncoder class, but this does it in UTF8 character set.

Parameters:

text - The text to decode

Returns:

An URLEncoded string.

urlDecodeUTF8

public static java.lang.String urlDecodeUTF8(java.lang.String utf8)

As java.net.URLDecoder class, but for UTF-8 strings. null is a safe value and returns null.

Parameters:

utf8 - The UTF-8 encoded string

Returns:

A plain, normal string.

urlEncode

public static java.lang.String urlEncode(java.lang.String data,
                                         java.lang.String encoding)

Provides encoded version of string depending on encoding. Encoding may be UTF-8 or ISO-8859-1 (default).

This implementation is the same as in FileSystemProvider.mangleName().

Parameters:

data - A string to encode

encoding - The encoding in which to encode

Returns:

An URL encoded string.

urlDecode

public static java.lang.String urlDecode(java.lang.String data,
                                         java.lang.String encoding)
                                  throws java.io.UnsupportedEncodingException,
                                         java.lang.IllegalArgumentException

Provides decoded version of string depending on encoding. Encoding may be UTF-8 or ISO-8859-1 (default).

This implementation is the same as in FileSystemProvider.unmangleName().

Parameters:

data - The URL-encoded string to decode

encoding - The encoding to use

Returns:

A decoded string.

Throws:

java.io.UnsupportedEncodingException - If the encoding is unknown

java.lang.IllegalArgumentException - If the data cannot be decoded.

replaceEntities

public static java.lang.String replaceEntities(java.lang.String src)

Replaces the relevant entities inside the String. All & >, <, and " are replaced by their respective names.

Parameters:

src - The source string.

Returns:

The encoded string.

Since:

1.6.1

replaceString

public static final java.lang.String replaceString(java.lang.String orig,
                                                   java.lang.String src,
                                                   java.lang.String dest)

Replaces a string with an other string.

Parameters:

orig - Original string. Null is safe.

src - The string to find.

dest - The string to replace src with.

Returns:

A string with the replacement done.

replaceString

public static java.lang.String replaceString(java.lang.String orig,
                                             int start,
                                             int end,
                                             java.lang.String text)

Replaces a part of a string with a new String.

Parameters:

start - Where in the original string the replacing should start.

end - Where the replacing should end.

orig - Original string. Null is safe.

text - The new text to insert into the string.

Returns:

The string with the orig replaced with text.

replaceStringCaseUnsensitive

public static java.lang.String replaceStringCaseUnsensitive(java.lang.String orig,
                                                            java.lang.String src,
                                                            java.lang.String dest)

Replaces a string with an other string. Case insensitive matching is used

Parameters:

orig - Original string. Null is safe.

src - The string to find.

dest - The string to replace src with.

Returns:

A string with all instances of src replaced with dest.

parseIntParameter

public static int parseIntParameter(java.lang.String value,
                                    int defvalue)

Parses an integer parameter, returning a default value if the value is null or a non-number.

Parameters:

value - The value to parse

defvalue - A default value in case the value is not a number

Returns:

The parsed value (or defvalue).

getIntegerProperty

public static int getIntegerProperty(java.util.Properties props,
                                     java.lang.String key,
                                     int defVal)

Gets an integer-valued property from a standard Properties list. If the value does not exist, or is a non-integer, returns defVal.

Parameters:

props - The property set to look through

key - The key to look for

defVal - If the property is not found or is a non-integer, returns this value.

Returns:

The property value as an integer (or defVal).

Since:

2.1.48.

getBooleanProperty

public static boolean getBooleanProperty(java.util.Properties props,
                                         java.lang.String key,
                                         boolean defval)

Gets a boolean property from a standard Properties list. Returns the default value, in case the key has not been set.

The possible values for the property are "true"/"false", "yes"/"no", or "on"/"off". Any value not recognized is always defined as "false".

Parameters:

props - A list of properties to search.

key - The property key.

defval - The default value to return.

Returns:

True, if the property "key" was set to "true", "on", or "yes".

Since:

2.0.11

getStringProperty

public static java.lang.String getStringProperty(java.util.Properties props,
                                                 java.lang.String key,
                                                 java.lang.String defval)

Fetches a String property from the set of Properties. This differs from Properties.getProperty() in a couple of key respects: First, property value is trim()med (so no extra whitespace back and front), and well, that's it.

Parameters:

props - The Properties to search through

key - The property key

defval - A default value to return, if the property does not exist.

Returns:

The property value.

Since:

2.1.151

isPositive

public static boolean isPositive(java.lang.String val)

Returns true, if the string "val" denotes a positive string. Allowed values are "yes", "on", and "true". Comparison is case-insignificant. Null values are safe.

Parameters:

val - Value to check.

Returns:

True, if val is "true", "on", or "yes"; otherwise false.

Since:

2.0.26

normalizePostData

public static java.lang.String normalizePostData(java.lang.String postData)

Makes sure that the POSTed data is conforms to certain rules. These rules are:

• The data always ends with a newline (some browsers, such as NS4.x series, does not send a newline at the end, which makes the diffs a bit strange sometimes.
• The CR/LF/CRLF mess is normalized to plain CRLF.

The reason why we're using CRLF is that most browser already return CRLF since that is the closest thing to a HTTP standard.

Parameters:

postData - The data to normalize

Returns:

Normalized data

beautifyString

public static java.lang.String beautifyString(java.lang.String s)

Adds spaces in suitable locations of the input string. This is used to transform a WikiName into a more readable format.

Parameters:

s - String to be beautified.

Returns:

A beautified string.

beautifyString

public static java.lang.String beautifyString(java.lang.String s,
                                              java.lang.String space)

Adds spaces in suitable locations of the input string. This is used to transform a WikiName into a more readable format.

Parameters:

s - String to be beautified.

space - Use this string for the space character.

Returns:

A beautified string.

Since:

2.1.127

createProperties

public static java.util.Properties createProperties(java.lang.String[] values)
                                             throws java.lang.IllegalArgumentException

Creates a Properties object based on an array which contains alternatively a key and a value. It is useful for generating default mappings. For example:

     String[] properties = { "jspwiki.property1", "value1",
                             "jspwiki.property2", "value2 };

     Properties props = TextUtil.createPropertes( values );

     LOGGER.info( props.getProperty("jspwiki.property1") );
  

would output "value1".

Parameters:

values - Alternating key and value pairs.

Returns:

Property object

Throws:

java.lang.IllegalArgumentException - if the property array is missing a value for a key.

Since:

2.2.

See Also:

Properties

countSections

public static int countSections(java.lang.String pagedata)

Counts the number of sections (separated with "----") from the page.

Parameters:

pagedata - The WikiText to parse.

Returns:

int Number of counted sections.

Since:

2.1.86.

getSection

public static java.lang.String getSection(java.lang.String pagedata,
                                          int section)
                                   throws java.lang.IllegalArgumentException

Gets the given section (separated with "----") from the page text. Note that the first section is always #1. If a page has no section markers, then there is only a single section, #1.

Parameters:

pagedata - WikiText to parse.

section - Which section to get.

Returns:

String The section.

Throws:

java.lang.IllegalArgumentException - If the page does not contain this many sections.

Since:

2.1.86.

repeatString

public static java.lang.String repeatString(java.lang.String what,
                                            int times)

A simple routine which just repeates the arguments. This is useful for creating something like a line or something.

Parameters:

what - String to repeat

times - How many times to repeat the string.

Returns:

Guess what?

Since:

2.1.98.

native2Ascii

public static java.lang.String native2Ascii(java.lang.String s)

Converts a string from the Unicode representation into something that can be embedded in a java properties file. All references outside the ASCII range are replaced with \\uXXXX.

Parameters:

s - The string to convert

Returns:

the ASCII string

toHexString

public static java.lang.String toHexString(byte[] bytes)

Generates a hexadecimal string from an array of bytes. For example, if the array contains { 0x01, 0x02, 0x3E }, the resulting string will be "01023E".

Parameters:

bytes - A Byte array

Returns:

A String representation

Since:

2.3.87

isNumber

public static boolean isNumber(java.lang.String s)

Returns true, if the argument contains a number, otherwise false. In a quick test this is roughly the same speed as Integer.parseInt() if the argument is a number, and roughly ten times the speed, if the argument is NOT a number.

Parameters:

s - String to check

Returns:

True, if s represents a number. False otherwise.

Since:

2.4

generateRandomPassword

public static java.lang.String generateRandomPassword()

Generate a random String suitable for use as a temporary password.

Returns:

String suitable for use as a temporary password

Since:

2.4