Extension:StringFunctionsEscaped

MediaWiki extensions manual

StringFunctionsEscaped Release status: unmaintained
Implementation	Parser function
Description	Defines a superset of string parser functions that allow character escaping in the 'search for' and 'replace with' arguments.
Author(s)	Jack D. Pond (jpondtalk)
Latest version	1.0.1 (2010-07-07)
MediaWiki	1.16+
License	GNU General Public License 2.0 only
Download	Download extension Git [?]: Download Git master browse repository (GitHub) commit history repository contributors (GitHub) code review README
Example	examples
Parameters $wgPFEnableStringFunctions
Hooks used ParserFirstCallInit
Quarterly downloads	2 (Ranked 127th)
Translate the StringFunctionsEscaped extension if it is available at translatewiki.net
Issues	Open tasks · Report a bug

The StringFunctionsEscaped extension defines a superset of string parser functions that allow character escaping in the 'search for' and 'replace with' arguments.

Wikitext allows the imbedding of certain control characters (newline, tab, etc.). These parser functions allows the developer to find and manipulate standard c-type escape character sequence (\n,\t, etc.) within wikitext.

These parser functions can be used to make infoblox-type templates and/or forms much more WYSIWIG (see examples) for novice/non-technical users.

Usage

All parser functions are invoked exactly as their string parser functions would be (except with the '_e' appended). They can be used exactly as their counterparts are, even if there are no embedded special characters.

pos_e: (string position)

{{#pos_e:value|key|offset}}

Returns the first position of key inside the given value, or an empty string. If offset is defined, this method will not search the first offset characters.

See: https://secure.php.net/function.strpos

rpos_e: (string position, reverse)

{{#rpos_e:value|key}}

Returns the last position of key inside the given value, or -1 if the key is not found. When using this to search for the last delimiter, add +1 to the result to retreive position after the last delimiter. This also works when the delimiter is not found, because "-1 + 1" is zero, which is the beginning of the given value.

See: https://secure.php.net/function.strrpos

pad_e: (pad string)

{{#pad_e:value|length|with|direction}}

Returns the value padded to the certain length with the given with string. If the with string is not given, spaces are used for padding. The direction may be specified as: 'left', 'center' or 'right'.

See: https://secure.php.net/function.str-pad

replace_e: (string replace)

{{#replace_e:value|from|to}}

Returns the given value with all occurrences of 'from' replaced with 'to'.

See: https://secure.php.net/function.str-replace

explode_e: (explode string)

{{#explode_e:value|delimiter|position}}

Splits the given value into pieces by the given delimiter and returns the position-th piece. Empty string is returned if there are not enough pieces.

Note: Pieces are counted from 0.
Note: A negative value can be used to count pieces from the end, instead of counting from the beginning. The last piece is at position -1.

See: https://secure.php.net/function.explode

stripnewlines: (remove multiple newlines)

{{#stripnewlines:value}}

Any time there is more than one newline in "value", they are changed to a single newline. This is useful for creating templates with complex but readable wiki text that won't impact on the layout of the calling page.

Examples

pos_e

{{#pos_e:Line 1
Line 2
Line 3|\n|7}}

Returns:

13

rpos_e

{{#rpos_e:Line 1
Line 2
Line 3|\n}}

Returns:

13

pad_e

~~{{#pad_e:xox|9|\n|center}}~~

Returns:

~~ 


xox 


~~ 

replace_e

{{#replace_e:Line 1
Line 2
Line 3|\n|<br>\n}}

Returns:

Line 1<br>
Line 2<br>
Line 3

Which would display as:

Line 1
Line 2
Line 3

Rather than the unescaped:

Line 1 Line 2 Line 3

explode_e

{{#explode_e:Line 1
Line 2
Line 3|\n|1}}

Returns:

Line 2

stripnewlines

{{#stripnewlines:Line 1

Line 2


Line 3}}

Returns:

Line 1
Line 2 
Line 3

Printed version:

Line 1 Line 2 Line 3

Installation

• Download, extract the ParserFunctions extension and place the file(s) in a directory called ParserFunctions in your extensions/ folder.
• Download and move the extracted StringFunctionsEscaped folder to your extensions/ directory.
  Developers and code contributors should install the extension from Git instead, using:cd extensions/
git clone https://gerrit.wikimedia.org/r/mediawiki/extensions/StringFunctionsEscaped
• Add the following code at the bottom of your LocalSettings.php file:

  wfLoadExtension( 'ParserFunctions' );
  $wgPFEnableStringFunctions = true;
  require_once "$IP/extensions/StringFunctionsEscaped/StringFunctionsEscaped.php";
  

•  Done – Navigate to Special:Version on your wiki to verify that the extension is successfully installed.

See also

• PhpTags Functions, includes more than seventy functions for working with strings using the PHP syntax.