StrTok function - Revision history

ConversionBot: Adding new author and category links.

2005-06-24T13:54:42Z

Adding new author and category links.

â† Older revision		Revision as of 13:54, 24 June 2005
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	{~~\|align=right~~		{{PageAuthor\|bigmac666}}
	~~\|<small>Author: [[~~{~~{ns:2}}:bigmac666~~\|bigmac666~~]] ([[{{ns:3}}:bigmac666\|talk]], [[{{ns:-1}~~}~~:Contributions/bigmac666\|contrib]])</small>~~
	\|}
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	== Description ==		== Description ==
	Here's a StrTok function which works most like the 'c' strtok function. First push the string that needs tokenizing; then push the token string, call the func, and get the first part back from stack, with the remains of the initial string also still on stack, ready for the next call.		Here's a StrTok function which works most like the 'c' strtok function. First push the string that needs tokenizing; then push the token string, call the func, and get the first part back from stack, with the remains of the initial string also still on stack, ready for the next call.
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	bigmac666		bigmac666

	[[~~{{ns:14}}~~:String Functions]]		[[Category:String Functions]]

ConversionBot: Added category links.

2005-04-30T21:28:06Z

Added category links.

â† Older revision		Revision as of 21:28, 30 April 2005
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	bigmac666		bigmac666

			[[{{ns:14}}:String Functions]]

ConversionBot: Updated author links.

2005-04-30T03:04:29Z

Updated author links.

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 == Description ==
 Here's a StrTok function which works most like the 'c' strtok function. First push the string that needs tokenizing; then push the token string, call the func, and get the first part back from stack, with the remains of the initial string also still on stack, ready for the next call.
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 bigmac666

ConversionBot: Updated author and download links, and changed format of some pages.

2005-04-23T12:37:04Z

Updated author and download links, and changed format of some pages.

â† Older revision		Revision as of 12:37, 23 April 2005
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	bigmac666		bigmac666

			Page author: [[User:bigmac666\|bigmac666]]
	Page author: bigmac666

ConversionBot: Wikipedia python library

2005-04-09T20:02:45Z

Wikipedia python library

New page

== Description ==
Here's a StrTok function which works most like the 'c' strtok function. First push the string that needs tokenizing; then push the token string, call the func, and get the first part back from stack, with the remains of the initial string also still on stack, ready for the next call.

== Example of Usage ==
<highlight-nsis>Push "version 1.24"
Push " ."
Call StrTok
Pop $R0 ; R0 now contains 'version'
Pop $R1 ; R1 is now '1.24'; popping just for demo purposes
Push $R1 ; continue parsing the same string
Push " ."
Call StrTok
Pop $R0 ; R0 now contains '1'
Push " ."
Call StrTok
Pop $R0 ; R0 now contains '24'
Pop $R1 ; should be empty string now, this just to clean the stack
</highlight-nsis>

== The Function ==
Here's the source of the function:
<highlight-nsis>;author bigmac666
Function StrTok
Exch $R1
Exch 1
Exch $R0
Push $R2
Push $R3
Push $R4
Push $R5

;R0 fullstring
;R1 tokens
;R2 len of fullstring
;R3 len of tokens
;R4 char from string
;R5 testchar

StrLen $R2 $R0
IntOp $R2 $R2 + 1

loop1:
IntOp $R2 $R2 - 1
IntCmp $R2 0 exit

StrCpy $R4 $R0 1 -$R2

StrLen $R3 $R1
IntOp $R3 $R3 + 1

loop2:
IntOp $R3 $R3 - 1
IntCmp $R3 0 loop1

StrCpy $R5 $R1 1 -$R3

StrCmp $R4 $R5 Found
Goto loop2
Goto loop1

exit:
;Not found!!!
StrCpy $R1 ""
StrCpy $R0 ""
Goto Cleanup

Found:
StrLen $R3 $R0
IntOp $R3 $R3 - $R2
StrCpy $R1 $R0 $R3

IntOp $R2 $R2 - 1
IntOp $R3 $R3 + 1
StrCpy $R0 $R0 $R2 $R3

Cleanup:
Pop $R5
Pop $R4
Pop $R3
Pop $R2
Exch $R0
Exch 1
Exch $R1

FunctionEnd
</highlight-nsis>

Questions/comments/bugs/fixes? Send a private message. Enjoy,

bigmac666

Page author: bigmac666