WoW:USERAPI CountChars - Revision history

Move page script: Move page script moved page USERAPI CountChars to WoW:USERAPI CountChars without leaving a redirect

2023-08-15T04:49:10Z

Move page script moved page USERAPI CountChars to USERAPI CountChars without leaving a redirect

← Older revision

Revision as of 04:49, 15 August 2023

WoWWiki>Egingell: /* Arguments */

2009-01-27T09:51:45Z

Arguments

← Older revision		Revision as of 09:51, 27 January 2009
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	:;haystack: String - The search subject.		:;haystack: String - The search subject.
	:;needle: The string to look for. ''needle'' can be a regular expression ('[a-z%s%d]' will ~~return the length of ''haystack''~~)		:;needle: The string to look for. ''needle'' can be a regular expression ('[a-z%s%d]' will count all alphanumeric characters and white spaces)

			;Notes
			: Arguments are cast into strings before any processing is done.
			: The search is not case-sensitive.

	~~''Note: Arguments are cast into strings before any processing is done.''<br />~~
	~~''Known Issue(1): Regular expressions sometimes won't find all instances of needle in haystack.''~~
	=== Returns ===		=== Returns ===

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	number2 = 2		number2 = 2
	number3 = 3		number3 = 3
	number4 = ~~2 -- even though there's actually~~ 3 ~~("rld", "rcr", and "raf"). ''Known Issue(1)''~~		number4 = 3

	==Code==		==Code==
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	local s, e = strfind(haystack, needle, pos)		local s, e = strfind(haystack, needle, pos)
	if e then		if e then
	pos = e + 1		pos = e
			if s == e then
			pos = pos + 1
			end
	end		end
	if s and e then		if s and e then

WoWWiki>Charibot: catfix

2008-07-09T00:43:09Z

catfix

← Older revision		Revision as of 00:43, 9 July 2008
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	__NOTOC__		__NOTOC__
	[[Category:User ~~Defined Functions~~]]		[[Category:User defined functions]]

WoWWiki>Pcj at 16:37, 4 December 2007

2007-12-04T16:37:26Z

← Older revision		Revision as of 16:37, 4 December 2007
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	{{userfunc}} <!-- Leave this line in! -->		{{userfunc}} <!-- Leave this line in! -->
	~~<center>'''CountChars''' ''- by [[user:egingell\|egingell]] -''</center>~~

	Return how many times ''needle'' is contained in ''haystack''.		Return how many times ''needle'' is contained in ''haystack''.

WoWWiki>Egingell: New page: {{userfunc}} '''CountChars''' ''- by egingell -'' Return how many times ''needle'' is contained in ''haystack''. number = ...

2007-11-09T21:18:44Z

New page: {{userfunc}}  <center>'''CountChars''' ''- by egingell -''</center> Return how many times ''needle'' is contained in ''haystack''. number = ...

New page

{{userfunc}} 
<center>'''CountChars''' ''- by [[user:egingell|egingell]] -''</center>

Return how many times ''needle'' is contained in ''haystack''.
number = <PREFIX>_CountChars(haystack, needle)

== Function Parameters ==
=== Arguments ===

:;haystack: String - The search subject.
:;needle: The string to look for. ''needle'' can be a regular expression ('[a-z%s%d]' will return the length of ''haystack'')

''Note: Arguments are cast into strings before any processing is done.''<br />
''Known Issue(1): Regular expressions sometimes won't find all instances of needle in haystack.''
=== Returns ===

:;number: Number of times ''needle'' is contained in ''haystack''. If ''needle'' is not found, returns 0.

== Example ==
number1 = ''<PREFIX>''_CountChars("World of Warcraft", 'o')
number2 = ''<PREFIX>''_CountChars("World of Warcraft", 'w[a-z]')
number3 = ''<PREFIX>''_CountChars("World of Warcraft", 'r[a-z]')
number4 = ''<PREFIX>''_CountChars("World of Warcraft", 'r[a-z][a-z]')

====Result====
number1 = 2
number2 = 2
number3 = 3
number4 = 2 -- even though there's actually 3 ("rld", "rcr", and "raf"). ''Known Issue(1)''

==Code==
<pre>function <PREFIX>_CountChars (haystack, needle)
haystack = strlower(tostring(haystack));
needle = strlower(tostring(needle));
local ret, pos = 0, 0
for i = 1, strlen(haystack) do
local s, e = strfind(haystack, needle, pos)
if e then
pos = e + 1
end
if s and e then
ret = ret + 1;
else
break -- If it hasn't found any more, there's no reason to continue
end
end
return ret
end</pre>

__NOTOC__
[[Category:User Defined Functions]]