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Posted 1 May 2001

Wildcard string compare (globbing)

, 15 Feb 2005
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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: Great Code Pin
siukurnin4-Jul-02 3:15
membersiukurnin4-Jul-02 3:15 
GeneralRe: Great Code Pin
The C++ Guru8-Sep-02 8:22
sussThe C++ Guru8-Sep-02 8:22 
GeneralRe: Great Code Pin
Anonymous4-Dec-03 19:53
sussAnonymous4-Dec-03 19:53 
Generalwildcmp("fold","??*"); Pin
Vadim Chavarha24-May-01 9:43
memberVadim Chavarha24-May-01 9:43 
GeneralRe: wildcmp( Pin
Jack Handy29-May-01 11:01
memberJack Handy29-May-01 11:01 
GeneralNot DOS compatible Pin
Miroslav Rajcic2-May-01 4:56
memberMiroslav Rajcic2-May-01 4:56 
GeneralRe: Not DOS compatible Pin
Jack Handy2-May-01 13:03
memberJack Handy2-May-01 13:03 
GeneralRe: Not DOS compatible Pin
Miroslav Rajcic7-May-01 0:04
memberMiroslav Rajcic7-May-01 0:04 
GeneralDOS compatible workaround Pin
Fredrik Wangel5-Jul-01 2:47
memberFredrik Wangel5-Jul-01 2:47 
GeneralRe: Not DOS compatible Pin
W2k27-Dec-02 14:26
memberW2k27-Dec-02 14:26 
QuestionWhy, oh why only? Pin
Anonymous2-May-01 3:17
memberAnonymous2-May-01 3:17 
AnswerRe: Why, oh why only? Pin
Simon Capewell2-May-01 3:39
memberSimon Capewell2-May-01 3:39 
GeneralRe: Why, oh why only? Pin
Anonymous5-Jul-01 11:27
memberAnonymous5-Jul-01 11:27 
AnswerRe: Why, oh why only? Pin
Paul McGuire4-Dec-01 5:18
memberPaul McGuire4-Dec-01 5:18 
Because regex is a complete mystery to my end users. These are not software people who want to master the intricacies of ^'s, []'s, .'s, and *'s (and don't forget the \'s!) - they just want to find every equipment in the factory that matches "DRILL*".

Actually, if you look around in the real world, there are many kinds of wheels out there. I'm glad someone came up with a nice light bicycle wheel for my small project, instead of my having to lug around a huge differential, axle, and automobile wheel assembly, just to do this basic feature.

Thanks for this nice piece of work!


Paul McGuire
KLA-Tencor/Process Analysis & Control Division
Austin, TX

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