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{{Header Nav|game=StrategyWiki:Guide}} | {{Header Nav|game=StrategyWiki:Guide}} | ||
{{wikipedia|Regular expression}} | {{wikipedia|Regular expression}} | ||
{{floatingtoc|left}} | |||
Regular expressions, often referred to as a regex or regexp, plural regexes or regexps, are used to help find changes that need to be replaced and to replace them. | Regular expressions, often referred to as a regex or regexp, plural regexes or regexps, are used to help find changes that need to be replaced and to replace them. | ||
{{-}} | |||
==Tools== | ==Tools== | ||
To use a regular expression you will have to have find a code base that can run it. The easiest tools to use are: | To use a regular expression you will have to have find a code base that can run it. The easiest tools to use are: | ||
*Google Chrome extension: [https://chrome.google.com/webstore/detail/search-and-replace/bldchfkhmnkoimaciljpilanilmbnofo Search and Replace 1.2.2] | *Google Chrome extension: [https://chrome.google.com/webstore/detail/search-and-replace/bldchfkhmnkoimaciljpilanilmbnofo Search and Replace 1.2.2] | ||
*TextPad (go to Search >> Replace, or press F8) | *TextPad (go to Search >> Replace, or press F8). Note: TextPad used to use Unix's implementation and syntax, but now uses Perl/JavaScript's. | ||
==Syntax differences== | ==Syntax differences== | ||
Note that some tools code their regular expression syntax differently. | Note that some tools code their regular expression syntax differently. Major differences occur between programming languages and shells; e.g. Unix vs. Perl/JavaScript implementations. | ||
Example: a simple parameter definition search in Unix may look like (this matches all characters a-b and 0-9, minimum of 1 time and maximum of 25 times in a single match): | |||
<pre> | |||
\(a-b,0-9)\{1,25\}\) | |||
</pre> | |||
In Perl/Javascript syntax it looks like: | |||
<pre> | |||
(a-b,0-9){1,25} | |||
</pre> | |||
For example, TextPad makes uses of simplified expressions, such as [:alpha:] to match a-z and A-Z. | |||
==Example uses== | |||
*Adding a hundred file names to a table. See [http://strategywiki.org/w/index.php?title=Animal_Crossing:_New_Leaf/List_of_Fossils&diff=prev&oldid=674718 this example]. | *Adding a hundred file names to a table. See [http://strategywiki.org/w/index.php?title=Animal_Crossing:_New_Leaf/List_of_Fossils&diff=prev&oldid=674718 this example]. | ||
**Regex used (in TextPad): "| || \([[:alpha:][:blank:]]\{10,20\}\) || \(.\{1,10\}\) Bells" (without quotes). | **Regex used (in old TextPad Unix syntax): <nowiki>"| || \([[:alpha:][:blank:]]\{10,20\}\) || \(.\{1,10\}\) Bells"</nowiki> (without quotes). | ||
*Simplifying all lines with five character or above Pokemon names, and their identification number, in {{t|PokePic}}. | |||
**Regex used (in new Textpad Perl/JavaScript syntax; without quotes): <nowiki>"\|([[:alpha:]]{5,25}) = [[][[]File[:]Pokemon ([0-9]{3})\{\{\{1\}\}\}.png\{\{!\}\}\{\{\{2\|40px\}\}\}\{\{!\}\}\{\{\{3\|none\}\}\}\]\]"</nowiki> | |||
{{Footer Nav|game=StrategyWiki:Guide|prevpage=Advanced tables|nextpage=Templates}} | {{Footer Nav|game=StrategyWiki:Guide|prevpage=Advanced tables|nextpage=Templates}} | ||
Latest revision as of 18:45, 23 November 2014
Regular expressions, often referred to as a regex or regexp, plural regexes or regexps, are used to help find changes that need to be replaced and to replace them.
Tools[edit]
To use a regular expression you will have to have find a code base that can run it. The easiest tools to use are:
- Google Chrome extension: Search and Replace 1.2.2
- TextPad (go to Search >> Replace, or press F8). Note: TextPad used to use Unix's implementation and syntax, but now uses Perl/JavaScript's.
Syntax differences[edit]
Note that some tools code their regular expression syntax differently. Major differences occur between programming languages and shells; e.g. Unix vs. Perl/JavaScript implementations.
Example: a simple parameter definition search in Unix may look like (this matches all characters a-b and 0-9, minimum of 1 time and maximum of 25 times in a single match):
\(a-b,0-9)\{1,25\}\)
In Perl/Javascript syntax it looks like:
(a-b,0-9){1,25}
For example, TextPad makes uses of simplified expressions, such as [:alpha:] to match a-z and A-Z.
Example uses[edit]
- Adding a hundred file names to a table. See this example.
- Regex used (in old TextPad Unix syntax): "| || \([[:alpha:][:blank:]]\{10,20\}\) || \(.\{1,10\}\) Bells" (without quotes).
- Simplifying all lines with five character or above Pokemon names, and their identification number, in {{PokePic}}.
- Regex used (in new Textpad Perl/JavaScript syntax; without quotes): "\|([[:alpha:]]{5,25}) = [[][[]File[:]Pokemon ([0-9]{3})\{\{\{1\}\}\}.png\{\{!\}\}\{\{\{2\|40px\}\}\}\{\{!\}\}\{\{\{3\|none\}\}\}\]\]"