https://www.slicer.org/w/index.php?action=history&feed=atom&title=Template%3AStrloc_prefixTemplate:Strloc prefix - Revision history2026-07-20T03:18:49ZRevision history for this page on the wikiMediaWiki 1.33.0https://www.slicer.org/w/index.php?title=Template:Strloc_prefix&diff=21177&oldid=prevJChris.FillionR: Created page with '<includeonly><!-- -============================================================= - Strloc_prefix - Get prefix up to strloc or entire string -=====================================…'2011-08-25T06:14:38Z<p>Created page with '<includeonly><!-- -============================================================= - Strloc_prefix - Get prefix up to strloc or entire string -=====================================…'</p>
<p><b>New page</b></p><div><includeonly><!--<br />
-=============================================================<br />
- Strloc_prefix - Get prefix up to strloc or entire string<br />
-=============================================================<br />
-- (see NOTES at bottom)<br />
-->{{#ifexpr: {{{strloc|7}}} > 0<br />
| {{padleft:|{{#expr:{{{strloc|7}}} }}|{{{1}}}}}<br />
| {{{1}}}<!--too long or strloc <= 0 (string not found) --><br />
}}<noinclude><!--<br />
--------------------------------------------------------------<br />
--NOTES<br />
--<br />
-- NOTE A1: This template gets the prefix of a string up to<br />
-- length strloc, or the entire string when strloc <= 0.<br />
-- It allows the location strloc to be a variable amount<br />
-- such as the result of a string search, because strloc<br />
-- is used twice: once to check if the entire string will<br />
-- be the result, or a 2nd time to limit the length of<br />
-- string extracted to length strloc. Hence, if strloc is<br />
-- set by a complex search or formula, then the use of<br />
-- this template will be about twice as fast as coding the<br />
-- logic directly.<br />
--<br />
-- NOTE N2: The expansion depth of this template is 2 levels,<br />
-- with 1 level for being a template, and the 2nd level<br />
-- needed to check the value of length strloc.<br />
--<br />
--------------------------------------------------------------<br />
--HISTORY:<br />
--07Feb2011 Created for string-prefix copy 2x times as fast.<br />
--></includeonly><noinclude><br />
<br />
Source: http://en.wikipedia.org/wiki/Template:Strloc_prefix<br />
<br />
The string-prefixer '''[[Template:Strloc_prefix]]''' gets the prefix of a string up to a specified location, or the entire string when location is less than 1.<br />
<br />
=== Usage ===<br />
::: {&#123;'''Strloc prefix'''|<string1>|strloc=<n>}}<br />
<br />
Returns the prefix of ''string1'' up to location strloc=''n'', where ''n'' = 1 denotes the first character of the string. If ''strloc'' <= 0 then the entire ''string1'' is the result. The parameter ''strloc'' can be a math formula, such as: strloc={{{len}}}-2, or strloc=abs(-2*5)+6.<br />
<br />
===Examples===<br />
The following show various uses:<br />
:* {&#123;Strloc prefix|abcdef|strloc=3}}{{pad|2em}}&rarr; {{Strloc prefix|abcdef|strloc=3}}<br />
:* {&#123;Strloc prefix|abcdef|strloc=0}}{{pad|2em}}&rarr; {{Strloc prefix|abcdef|strloc=0}}<br />
:* <nowiki>{{Strloc prefix|My Title (film)|strloc= {{strfind_short|My Title (film)|(|1|lenstr={{strlen_quick|My Title (film)}}|}}-2}}</nowiki>{{pad|2em}}&rarr; {{Strloc prefix|My Title (film)|strloc= {{strfind_short|My Title (film)|(|1|lenstr={{strlen_quick|My Title (film)}}|}}-2}}<br />
:: In the example with "{{[[Template:Strfind_short|strfind_short]]}}: the number for strloc was set by finding "(" in the<br>title. If there had been no parenthesis "(" then the result would get the entire title.<br />
<br />
===Limitations=== <br />
The text extracted is subject to the limitations of [[WP:Parser function|parser functions]] {#ifexpr:} and {padleft:}. In particular, spaces around the prefixed string are dropped, and NOT counted, before or after:<br />
:* <nowiki>{{Strloc prefix| Title here |strloc=9}}</nowiki> &nbsp; &rarr; "{{Strloc prefix| Title here |strloc=9}}"<br />
:* <nowiki>{{Strloc prefix| Title here |strloc=0}}</nowiki> &nbsp; &rarr; "{{Strloc prefix| Title here |strloc=0}}"<br />
Spaces embedded within the prefix string are ''real'' spaces (NOT "&amp;#32;"), and any accented or special characters can be used in the string.<br />
<br />
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[[Category:Templates|{{PAGENAME}}]]<br />
</noinclude></div>JChris.FillionR