[Ibson]

I'm implementing a search function in my Cocoa (Obj-C) app, and need to find code that returns whether or not string A contains string B. For some other strings, I also need to find out whether or not string A contains any of the words in string B.
Thanks!

[MrBS]

Not sure about the Obj C syntax, but pseudocode is as follows
<BLOCKQUOTE><font size="1"face="Geneva, Verdana, Arial">code:</font><HR><pre><font size=1 face=courier>
bool containsSubString(string A, string B)
{
int i,j,k;
bool exists=false;

for(i=&lt;font color = blue&gt;<font color = blue>0</font>&lt;/font&gt;;i&lt;A.length-B.length+&lt;font color = blue&gt;<font color = blue>1</font>&lt;/font&gt;;i++)
{
if(A[i]==B[&lt;font color = blue&gt;<font color = blue>0</font>&lt;/font&gt;])
{
exists=true;
for (j=&lt;font color = blue&gt;<font color = blue>0</font>&lt;/font&gt;,k=i;j&lt;B.length;k++,j++)
{
if(A[k]!=B[j])
{
exists=false;
j=B.length;
}
}
}
if(exists)
return true;
}
return exists;
}
</font>[/code]
Haven't slept for a while (cramming for midterms is bad, m'kay) but that should work.
~BS

&lt;EDIT: ubb code&gt;
&lt;EDIT: true!=false...duh.&gt;

[ 04-29-2002: Message edited by: MrBS ]

[MrBS]

Gah. that's ugly. Can't get the formatting to stay. Sorry.
~BS

[Rickster]

The answer to the first question is simple. See the NSString docs for <font face = "courier">-rangeOfString:</font> (and <font face = "courier">-rangeOfString :options:</font> and <font face = "courier">-rangeOfString :options:range:</font>). If the substring you're looking for isn't found, you'll get back an NSRange whose location element is NSNotFound.

For finding out if string A contains any words from string B, you'll basically need to split string B into words (by breaking on spaces or other word boundaries, which can be specific to different human languages and writing systems), perform separate searches for each word, and OR all the results together.

By the way, if you're looking for an easy-to-implement Find/Replace panel for your app, check out our open-source OmniAppKit framework. (end shameless plug... )

[ 04-27-2002: Message edited by: Rickster ]

[MrBS]

Rick,
Can't access the code...
http://www.omnigroup.com/ftp/pub/software/Source/
________________
Not Found

The requested URL /ftp/pub/software/Source/ was not found on this server.

[Ibson]

Thanks Rick! I'd completely missed rangeOfString:options: in the documentation.

[ 04-27-2002: Message edited by: Ibson ]

[tobli]

Originally posted by MrBS:
<STRONG>Rick,
Can't access the code...
http://www.omnigroup.com/ftp/pub/software/Source/
________________
Not Found

The requested URL /ftp/pub/software/Source/ was not found on this server.</STRONG>

Try http://www.omnigroup.com/ftp/pub/sof...MacOSX/Source/

When you get an "URL not found" error, try deleting the last part of the url and try loading that. Usually it's not that hard to find the correct path that way.

/Tobias