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DarkBASIC Professional Discussion / Searching a string

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FieldDoc
23
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Joined: 30th May 2003
Location: London, UK
Posted: 14th Jun 2003 23:19 Edited at: 14th Jun 2003 23:20
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Hi!
Suppose I have 2 strings. One called small$ and one called big$. They are as follows:

small$ = "program files\office\"
big$ = "program files\office\word\"

I want to somehow work out a way to search the contents of big$ for small$. It would have to be a generic function of some sort as small$ and big$ alter all the time. I also need to flag somehow that small$ is found in big$.

Thanks in advance

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The Darthster
23
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Joined: 25th Sep 2002
Location: United Kingdom
Posted: 14th Jun 2003 23:42
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Um, off the top of my head it would be:

for i=0 to (len(big$)-len(small$))
if mid$(big$,i,len(small$))=small$ then flag=1:break
next i

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Rob K
Retired Moderator
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Location: Surrey, United Kingdom
Posted: 15th Jun 2003 00:39
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Ask IanM for his Matrix1 Utility DLL or get the string functions DLL from http://www.realgametools.com - they both have InString$ commands which do exactly what you want.

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FieldDoc
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Location: London, UK
Posted: 15th Jun 2003 00:52
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Thanks RobK....how does his INSTR function work.....i'm not to clear on the syntax in his readme for it. It says:

INSTR - Search for a string within a string.
Pos=INSTR(Source$, Search$, StartPos)
Pos=INSTR(Source$, Search$)

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