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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

Comments and Discussions

 
GeneralRe: Great Code Pinmembersiukurnin4-Jul-02 3:15 
GeneralRe: Great Code PinsussThe C++ Guru8-Sep-02 8:22 
GeneralRe: Great Code PinsussAnonymous4-Dec-03 19:53 
Generalwildcmp("fold","??*"); PinmemberVadim Chavarha24-May-01 9:43 
GeneralRe: wildcmp( PinmemberJack Handy29-May-01 11:01 
GeneralNot DOS compatible PinmemberMiroslav Rajcic2-May-01 4:56 
GeneralRe: Not DOS compatible PinmemberJack Handy2-May-01 13:03 
GeneralRe: Not DOS compatible PinmemberMiroslav Rajcic7-May-01 0:04 
GeneralDOS compatible workaround PinmemberFredrik Wangel5-Jul-01 2:47 
GeneralRe: Not DOS compatible PinmemberW2k27-Dec-02 14:26 
QuestionWhy, oh why only? PinmemberAnonymous2-May-01 3:17 
AnswerRe: Why, oh why only? PinmemberSimon Capewell2-May-01 3:39 
GeneralRe: Why, oh why only? PinmemberAnonymous5-Jul-01 11:27 
AnswerRe: Why, oh why only? PinmemberPaul 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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