 | This template uses Lua:
|
Template:String split is a convenience wrapper for the split function in Module:String2.
The split function splits text at boundaries specified by separator and returns the chunk for the index idx (starting at 1). It can use positional parameters or named parameters (but these should not be mixed):
{{#invoke:String2 |split |text |separator |index |true/false}}{{#invoke:String2 |split |txt=text |sep=separator |idx=index |plain=true/false}}
Any double quotes (") in the separator parameter are stripped out, which allows spaces and wikitext like ["[ to be passed. Use {{!}} for the pipe character |.
If the optional plain parameter is set to false / no / 0 then separator is treated as a Lua pattern. The default is plain=true, i.e. normal text matching.
The index parameter is optional; it defaults to the first chunk of text. A negative parameter value counts chunks backward from the end of the text.
Examples
{{String split |This is a piece of text to be split |" "}} → This{{String split |This is a piece of text to be split |" "| 4}} → piece{{String split |This is a piece of text to be split |x| 2}} → t to be split
Modules may return strings with | as separators like this: {{#invoke:carousel | main | name = WPDogs | switchsecs = 5 }} → סאטף אנגלי.jpg | Staffordshire Bull Terrier
Lua patterns can allow splitting at classes of characters such as punctuation:
{{String split |Apples, pears, oranges; Cats, dogs|"%p"| 2 |false}} → pears{{String split |Apples, pears, oranges; Cats, dogs|"%p"| 4 |false}} → Cats
Or split on anything that isn't a letter (no is treated as false):
{{String split |Apples pears oranges; Cats dogs|"%A+"| 4 |no}} → Cats
Named parameters force the trimming of leading and trailing spaces in the parameters and are generally clearer when used:
{{String split | txt=Apples pears oranges; Cats dogs | sep="%A+" | idx=3 | plain=false }} → oranges
A negative index will count back from the end of the text:
{{String split |txt=This is a piece of text to be split |sep=" " |idx=-1}} → split
An easy mistake to make when using negative parameters is to forget that a trailing space in the text when passed as an unnamed parameter will induce an empty last chunk:
{{String split |This is a piece of text to be split |" "|-1}} →{{String split |This is a piece of text to be split|" "|-1}} → split
See also
String-handling templates |
|---|
|
|---|
| By counting | | {{str mid}} | To return a substring specified by position and length. | | {{trunc}} | To trim down to a specified number of characters. | | {{str left}} | To trim down to a specified number of characters or duplicate the string to a specified number. | | {{str crop}} | To crop a specified number of characters off the end. | | {{chop head and tail}} | To crop a specified number of characters off the beginning and end. |
| | {{str right}} | To trim the first specified number of characters. | | {{str rightc}} | To return a number of characters from the end, returns a parameter if the string is empty. | | {{str rightmost}} | To trim down to the last specified number of characters. | | {{str sub old}} | To trim down to a specified number, starting at a given number from the left. | | {{str sub new}} | Select a substr based on starting and ending index. | | {{str index}} | Returns a given character from a string, but not accented letters. |
|
|
|---|
| By checking | | {{trim}} | To trim any leading or trailing whitespace | | {{str letter/trim}} | To trim down to the beginning letters. | | {{str number/trim}} | To trim down to the beginning numbers. | | {{trim brackets}} | To trim any leading or trailing square brackets. | | {{trim quotes}} | To trim leading or trailing matching quotes. |
| |
|
|---|
| Dedicated | | {{delink}} | Removes wikilink brackets (wikicode). | | {{remove file prefix}} | Removes "File:" (or "Image:") from filenames. | | {{PAGENAMEBASE}} | To trim off any parenthesis text at the end of a string (disambiguation). | | {{title disambig text}} | Returns text in parentheses at the end of a string (disambiguation). |
| | {{WikiProjectbasename}} | Removes "WikiProject" from a pagename. | | {{remove unranked}} | Removes the string "unranked_" from the left of a string (taxonomy). | | {{ship prefix}} | Returns the length of a ship's name prefix, if listed (ship names). | | {{title year}} | Returns the 4-digit year from a pagename, if any. | | {{title decade}} | Returns the 4-digit decade (e.g. "1740s") from a pagename, if any. |
|
|
|---|
|
|
Insertion, replacement and length |
|---|
| {{strloc insert}} | Inserts a string at character location strloc, or appends if strloc<=0. | | {{loop}} | Repeat character string a specified number of times. | | {{replace}} | Returns the string, after replacing all occurrences of a specified string with another string. | | {{str rep}} | Returns the string, after replacing the first occurrence of a specified string with another string. | | {{digits}} | Returns the string, after removing all characters that are not digits 0–9 |
|
| {{str len}} | Returns a string's length. | | {{str ≥ len}} | To check if a string is "longer or equally long" or "shorter" than a given length. | | {{str ≤ len}} | To check if a string is "shorter or equally long" or "longer" than a given length. | | {{str ≠ len}} | To check if a string is "not equal" or "equal" to a given length. | | {{str ≤ ≥ len}} | To check if a string is "shorter", "equal", or "longer" than a given length. |
|
|
|
Analysis and technical |
|---|
| {{str endswith}} | To check if a string ends with a given string. | {{str find}}
{{strfind short}} | Returns the numerical location of a given string in a string. | | {{str find0}} | Zero-based substring search. | | {{str sub find}} | Searches a substring in a string at the given offset. | | {{str letter}} | Returns the number of letters that begin a string. | | {{str number}} | Returns the number of numbers that begin a string. | | {{str gtr str}} | Compares two strings for alphabetical order, and returns a value accordingly. |
|
|
|
|
|
Template documentation
