Class StringUtil

java.lang.Object

ubic.gemma.core.util.StringUtil

public class StringUtil
extends Object

String helpers (R-style name munging, common prefix/suffix, CSV split, etc.).

Ported in-tree from ubic.basecode.util.StringUtil as part of the Phase 3 baseCode util retirement (see BASECODE_DEP_AUDIT.md). Methods not called by Gemma have been dropped: containsValidCharacter, cvs2tsv, isLatinLetter, makeValidForR, twoStringHashKey. The single-arg legacy makeValidForR(String) is gone; callers use makeNames(String) directly.

Distinct from StringUtils (plural) which extends StringUtils.

Author:

pavlidis

Constructor Summary

Constructors

Constructor	Description
StringUtil()

Method Summary

Modifier and Type	Method	Description
static String	append(String appendee, String appendant, String separator)
static String	commonPrefix(Collection<String> strings)	Given a set of strings, identify any prefix they have in common.
static String	commonSuffix(Collection<String> strings)	Given a set of strings, identify any suffix they have in common.
static String[]	csvSplit(String line)	Split a single CSV-formatted line into fields.
static String	makeNames(String s)	Mimics the make.names method in R for a single string.
static String[]	makeNames(String[] strings, boolean unique)	Mimics the make.names method in R.
static String[]	makeUnique(String[] strings)	Mimics the make.unique method in R.

Methods inherited from class Object

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

Constructor Details

StringUtil

public StringUtil()

Method Details

append

public static String append(@Nullable
 String appendee,
 String appendant,
 String separator)

Parameters:

appendee - The string to be added to

appendant - The string to add to the end of the appendee

separator - The string to put between the joined strings, if necessary.

Returns:

appendee + separator + appendant unless appendee is empty, in which case the appendant is returned.

commonPrefix

@Nullable
public static String commonPrefix(Collection<String> strings)

Given a set of strings, identify any prefix they have in common.

Returns:

the common prefix, null if there isn't one.

commonSuffix

@Nullable
public static String commonSuffix(Collection<String> strings)

Given a set of strings, identify any suffix they have in common.

Returns:

the common suffix, null if there isn't one.

csvSplit

public static String[] csvSplit(String line)

Split a single CSV-formatted line into fields.

makeNames

public static String[] makeNames(String[] strings,
 boolean unique)

Mimics the make.names method in R.

Parameters:

strings - a list of strings to be made valid for R

unique - if true, will ensure that the names are unique by appending a number to duplicates as per makeUnique(String[])

makeNames

public static String makeNames(@Nullable
 String s)

Mimics the make.names method in R for a single string.

makeUnique

public static String[] makeUnique(String[] strings)

Mimics the make.unique method in R.

Duplicated values in the input array will be suffixed with a dot and a number, starting from 1.