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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 PinsussAnonymous4-Dec-03 18:53 
Generalwildcmp("fold","??*"); PinmemberVadim Chavarha24-May-01 8:43 
GeneralRe: wildcmp( PinmemberJack Handy29-May-01 10:01 
GeneralNot DOS compatible PinmemberMiroslav Rajcic2-May-01 3:56 
GeneralRe: Not DOS compatible PinmemberJack Handy2-May-01 12:03 
GeneralRe: Not DOS compatible PinmemberMiroslav Rajcic6-May-01 23:04 
GeneralDOS compatible workaround PinmemberFredrik Wangel5-Jul-01 1:47 
GeneralRe: Not DOS compatible PinmemberW2k27-Dec-02 13:26 
You're either trying to be funny, or you're just clueless.
 
The reason a command like "dir *.*" in DOS, or a Windows DOS box, will also yield files that have no extension, is that, well, even without an extension, the dot is still there. You CAN'T have a filename without a dot in it under DOS or Windows, that's just the way the file systems (FAT, NTFS, others) work.
 
The reason you can still do something like "type bleh" to get the contents of the file "bleh." is because DOS is so clever - it knows that there's supposed to be a dot there, even if the user forgot to type it in.
 
Illuminating cyberspace since 1983
 
[ PlanetCPP ][ home of the n00blist ]
QuestionWhy, oh why only? PinmemberAnonymous2-May-01 2:17 
AnswerRe: Why, oh why only? PinmemberSimon Capewell2-May-01 2:39 
GeneralRe: Why, oh why only? PinmemberAnonymous5-Jul-01 10:27 
AnswerRe: Why, oh why only? PinmemberPaul McGuire4-Dec-01 4:18 

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