StringUtils (Stanford JavaNLP API)

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edu.stanford.nlp.util
Class StringUtils

java.lang.Object
  edu.stanford.nlp.util.StringUtils

public class StringUtils
extends Object
extends Object

StringUtils is a class for random String things.

Author:: Dan Klein, Christopher Manning, Tim Grow (grow@stanford.edu), Chris Cox

Method Summary
`static Map<String,String[]>`	`argsToMap(String[] args)` Parses command line arguments into a Map.
`static Map<String,String[]>`	`argsToMap(String[] args, Map<String,Integer> flagsToNumArgs)` Parses command line arguments into a Map.
`static Properties`	`argsToProperties(String[] args)`
`static Properties`	`argsToProperties(String[] args, Map flagsToNumArgs)` Analagous to `argsToMap(java.lang.String[])`.
`static String`	`capitalize(String s)` Uppercases the first character of a string.
`static int`	`editDistance(String s, String t)` Computes the Levenshtein (edit) distance of the two given Strings.
`static String`	`escapeString(String s, char[] charsToEscape, char escapeChar)`
`static String`	`fileNameClean(String s)` Returns a "clean" version of the given filename in which spaces have been converted to dashes and all non-alphaneumeric chars are underscores.
`static boolean`	`find(String str, String regex)` Say whether this regular expression can be found inside this String.
`static String`	`join(Iterable l, String glue)` Joins each elem in the Collection with the given glue.
`static String`	`join(List l)` Joins elems with a space.
`static String`	`join(List l, String glue)` Joins each elem in the List with the given glue.
`static String`	`join(Object[] elements)` Joins elems with a space.
`static String`	`join(Object[] elements, String glue)` Joins each elem in the array with the given glue.
`static int`	`longestCommonSubstring(String s, String t)` Computes the longest common substring of s and t.
`static boolean`	`lookingAt(String str, String regex)` Say whether this regular expression can be found at the beginning of this String.
`static void`	`main(String[] args)`
`static boolean`	`matches(String str, String regex)` Say whether this regular expression matches this String.
`static int`	`nthIndex(String s, char ch, int n)` Returns the index of the nth occurrence of ch in s, or -1 if there are less than n occurrences of ch.
`static String`	`pad(Object obj, int totalChars)` Pads the toString value of the given Object.
`static String`	`pad(String str, int totalChars)` Return a String of length a minimum of totalChars characters by padding the input String str with spaces.
`static String`	`padLeft(double d, int totalChars)`
`static String`	`padLeft(int i, int totalChars)`
`static String`	`padLeft(Object obj, int totalChars)`
`static String`	`padLeft(String str, int totalChars)` Pads the given String to the left with spaces to ensure that it's at least totalChars long.
`static String`	`padOrTrim(Object obj, int totalChars)` Pad or trim the toString value of the given Object.
`static String`	`padOrTrim(String str, int num)` Pad or trim so as to produce a string of exactly a certain length.
`static Map`	`parseCommandLineArguments(String[] args)` A simpler form of command line argument parsing.
`static String`	`pennPOSToWordnetPOS(String s)` Computes the WordNet 2.0 POS tag corresponding to the PTB POS tag s.
`static void`	`printStringOneCharPerLine(String s)`
`static void`	`printToFile(File file, String message)` Prints to a file.
`static void`	`printToFile(File file, String message, boolean append)` Prints to a file.
`static void`	`printToFile(String filename, String message)` Prints to a file.
`static void`	`printToFile(String filename, String message, boolean append)` Prints to a file.
`static String`	`slurpFile(File file)` Returns all the text in the given File.
`static String`	`slurpFile(String filename)` Returns all the text in the given file
`static String`	`slurpFile(String filename, String encoding)` Returns all the text in the given file with the given encoding.
`static String`	`slurpFileNoExceptions(File file)` Returns all the text in the given File.
`static String`	`slurpFileNoExceptions(String filename)` Returns all the text in the given File.
`static String`	`slurpFileNoExceptions(String filename, String encoding)` Returns all the text in the given file with the given encoding.
`static String`	`slurpGBFile(String filename)`
`static String`	`slurpGBFileNoExceptions(String filename)`
`static String`	`slurpGBURL(URL u)` Returns all the text at the given URL.
`static String`	`slurpGBURLNoExceptions(URL u)` Returns all the text at the given URL.
`static String`	`slurpReader(Reader reader)` Returns all the text from the given Reader.
`static String`	`slurpURL(String path)` Returns all the text at the given URL.
`static String`	`slurpURL(URL u)` Returns all the text at the given URL.
`static String`	`slurpURL(URL u, String encoding)` Returns all the text at the given URL.
`static String`	`slurpURLNoExceptions(String path)` Returns all the text at the given URL.
`static String`	`slurpURLNoExceptions(URL u)` Returns all the text at the given URL.
`static String`	`slurpURLNoExceptions(URL u, String encoding)` Returns all the text at the given URL.
`static List`	`split(String s)` Splits on whitespace (\\s+).
`static List`	`split(String str, String regex)` Splits the given string using the given regex as delimiters.
`static String[]`	`splitOnCharWithQuoting(String s, char splitChar, char quoteChar, char escapeChar)` This function splits the String s into multiple Strings using the splitChar.
`static Properties`	`stringToProperties(String str)` This method converts a comma-separated String (with whitespace optionally allowed after the comma) representing properties to a Properties object.
`static String`	`stripNonAlphaNumerics(String orig)`
`static String`	`trim(Object obj, int maxWidth)`
`static String`	`trim(String s, int maxWidth)` Returns s if it's at most maxWidth chars, otherwise chops right side to fit.
`static String`	`truncate(int n, int smallestDigit, int biggestDigit)` This returns a string from decimal digit smallestDigit to decimal digit biggest digit.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Method Detail

find

public static boolean find(String str,
                           String regex)

Say whether this regular expression can be found inside this String. This method provides one of the two "missing" convenience methods for regular expressions in the String class in JDK1.4. This is the one you'll want to use all the time if you're used to Perl. What were they smoking?

Parameters:: str - String to search for match in; regex - String to compile as the regular expression
Returns:: Whether the regex can be found in str

lookingAt

public static boolean lookingAt(String str,
                                String regex)

Say whether this regular expression can be found at the beginning of this String. This method provides one of the two "missing" convenience methods for regular expressions in the String class in JDK1.4.

Parameters:: str - String to search for match at start of; regex - String to compile as the regular expression
Returns:: Whether the regex can be found at the start of str

matches

public static boolean matches(String str,
                              String regex)

Say whether this regular expression matches this String. This method is the same as the String.matches() method, and is included just to give a call that is parallel to the other static regex methods in this class.

Parameters:: str - String to search for match at start of; regex - String to compile as the regular expression
Returns:: Whether the regex matches the whole of this str

slurpFile

public static String slurpFile(File file)
                        throws IOException

Returns all the text in the given File.

Throws:: IOException

slurpGBFileNoExceptions

public static String slurpGBFileNoExceptions(String filename)

slurpFile

public static String slurpFile(String filename,
                               String encoding)
                        throws IOException

Returns all the text in the given file with the given encoding.

Throws:: IOException

slurpFileNoExceptions

public static String slurpFileNoExceptions(String filename,
                                           String encoding)

Returns all the text in the given file with the given encoding. If the file cannot be read (non-existent, etc.), then and only then the method returns null.

slurpGBFile

public static String slurpGBFile(String filename)
                          throws IOException

Throws:: IOException

slurpReader

public static String slurpReader(Reader reader)

Returns all the text from the given Reader.

Returns:: The text in the file.

slurpFile

public static String slurpFile(String filename)
                        throws IOException

Returns all the text in the given file

Returns:: The text in the file.
Throws:: IOException

slurpFileNoExceptions

public static String slurpFileNoExceptions(File file)

Returns all the text in the given File.

Returns:: The text in the file. May be an empty string if the file is empty. If the file cannot be read (non-existent, etc.), then and only then the method returns null.

slurpFileNoExceptions

public static String slurpFileNoExceptions(String filename)

Returns all the text in the given File.

Returns:: The text in the file. May be an empty string if the file is empty. If the file cannot be read (non-existent, etc.), then and only then the method returns null.