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Wildcard string compare (globbing)

, 15 Feb 2005 810.8K 94
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Matches a string against a wildcard string such as "*.*" or "bl?h.*" etc. This is good for file globbing or to match hostmasks.

Usage:

This is a fast, lightweight, and simple pattern matching function.

if (wildcmp("bl?h.*", "blah.jpg")) {
  //we have a match!
} else {
  //no match =(
}

Function:

int wildcmp(const char *wild, const char *string) {
  // Written by Jack Handy - <A href="mailto:jakkhandy@hotmail.com">jakkhandy@hotmail.com</A>
  const char *cp = NULL, *mp = NULL;

  while ((*string) && (*wild != '*')) {
    if ((*wild != *string) && (*wild != '?')) {
      return 0;
    }
    wild++;
    string++;
  }

  while (*string) {
    if (*wild == '*') {
      if (!*++wild) {
        return 1;
      }
      mp = wild;
      cp = string+1;
    } else if ((*wild == *string) || (*wild == '?')) {
      wild++;
      string++;
    } else {
      wild = mp;
      string = cp++;
    }
  }

  while (*wild == '*') {
    wild++;
  }
  return !*wild;
}

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here

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About the Author

Jack Handy
Web Developer
United States United States
No Biography provided

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Comments and Discussions

 
GeneralRe: too complicated Pin
Jack Handy2-Jun-03 13:56
memberJack Handy2-Jun-03 13:56 
GeneralRe: too complicated Pin
Anonymous2-Jun-03 14:48
sussAnonymous2-Jun-03 14:48 
GeneralRe: too complicated Pin
Anonymous4-Dec-03 18:29
sussAnonymous4-Dec-03 18:29 
GeneralRe: too complicated Pin
olegxxx4-Mar-05 19:24
memberolegxxx4-Mar-05 19:24 
GeneralSweet! Pin
EpicBoy1-Feb-02 16:08
memberEpicBoy1-Feb-02 16:08 
GeneralRe: Sweet! Pin
Michael Dunn1-Feb-02 17:10
memberMichael Dunn1-Feb-02 17:10 
GeneralRe: Sweet! Pin
Steve Mallam13-May-02 0:29
memberSteve Mallam13-May-02 0:29 
GeneralI found this very useful. Pin
Todd Smith4-Jan-02 14:40
memberTodd Smith4-Jan-02 14:40 
GeneralTest Cases Pin
Paul McGuire4-Dec-01 12:00
memberPaul McGuire4-Dec-01 12:00 
GeneralRe: Test Cases Pin
Lee Elenbaas9-Sep-08 23:05
memberLee Elenbaas9-Sep-08 23:05 
GeneralSuper fast code - super, but... Pin
Rene Rassnitzer23-Aug-01 6:24
memberRene Rassnitzer23-Aug-01 6:24 
GeneralGreat Code Pin
mediamaster404-Jul-01 20:18
membermediamaster404-Jul-01 20:18 
GeneralRe: Great Code Pin
Anonymous5-Jul-01 10:24
memberAnonymous5-Jul-01 10:24 
GeneralRe: Great Code Pin
siukurnin4-Jul-02 2:15
membersiukurnin4-Jul-02 2:15 
Yes, the code is quite fine and concise (even if i prefer regexes)

BUT

> Besides - smaller code = faster code.

Cry | :((
That's quite a wrong asumption !
Just looking at other threads in the same discussion will show you the contrary : a proposed shorter version was in fact slower.

This kind of reasoning date back to the prehistoric times of dumb-compilers
(and was not even completely true at that time !)


If you want speed use profiling / benchmarks not character counting methods !

> Speed = Better Program.

OK so the "null" program, wich executes in no time, is the best of all.
Right ?

What makes a good program is FUNCTIONNALITY : something that has to do with the real world and the people in front of the computer !



GeneralRe: Great Code Pin
The C++ Guru8-Sep-02 7:22
sussThe C++ Guru8-Sep-02 7:22 
GeneralRe: Great Code Pin
Anonymous4-Dec-03 18:53
sussAnonymous4-Dec-03 18:53 
Generalwildcmp("fold","??*"); Pin
Vadim Chavarha24-May-01 8:43
memberVadim Chavarha24-May-01 8:43 
GeneralRe: wildcmp( Pin
Jack Handy29-May-01 10:01
memberJack Handy29-May-01 10:01 
GeneralNot DOS compatible Pin
Miroslav Rajcic2-May-01 3:56
memberMiroslav Rajcic2-May-01 3:56 
GeneralRe: Not DOS compatible Pin
Jack Handy2-May-01 12:03
memberJack Handy2-May-01 12:03 
GeneralRe: Not DOS compatible Pin
Miroslav Rajcic6-May-01 23:04
memberMiroslav Rajcic6-May-01 23:04 
GeneralDOS compatible workaround Pin
Fredrik Wangel5-Jul-01 1:47
memberFredrik Wangel5-Jul-01 1:47 
GeneralRe: Not DOS compatible Pin
W2k27-Dec-02 13:26
memberW2k27-Dec-02 13:26 
QuestionWhy, oh why only? Pin
Anonymous2-May-01 2:17
memberAnonymous2-May-01 2:17 
AnswerRe: Why, oh why only? Pin
Simon Capewell2-May-01 2:39
memberSimon Capewell2-May-01 2:39 
GeneralRe: Why, oh why only? Pin
Anonymous5-Jul-01 10:27
memberAnonymous5-Jul-01 10:27 
AnswerRe: Why, oh why only? Pin
Paul McGuire4-Dec-01 4:18
memberPaul McGuire4-Dec-01 4:18 

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