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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

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About the Author

Jack Handy
Web Developer
United States United States
No Biography provided

Comments and Discussions

 
GeneralSorry - revised numbers PinmemberRenniePet29-Mar-10 9:35 
GeneralRe: Depends on whether you need to optimize the last few nanoseconds out of it... PinmemberErwin de GRoot29-Mar-10 9:37 
GeneralYet another version - 25% faster, I think [modified] PinmemberRenniePet1-Apr-10 9:24 
GeneralRe: Yet another version - 25% faster, I think Pinmemberaleks1k21-Sep-11 3:47 
QuestionI used this function but I how I can catch variables from the * ??? Pinmembermoh.hijjawi20-Oct-09 2:55 
Dear Jack,
Dear all,
 
I used this function in comparing two strings the first is Pattern(* KK *) and the second is Text(TT KK ZZ) and the function return pass. thats briliant,but my question how I can edit the function to be able to catch or handle the characters of matched * to save them in variables. for example:
 
X = TT
Y = ZZ
 
to deal with them later on in my system.
 
I tried many times but its not working well so far.
 
So please any one have an idea to do that please let me know and its will be appreciated.
 
Best Regards.
AnswerRe: I used this function but I how I can catch variables from the * ??? PinmemberRenniePet1-Apr-10 12:27 
Questionany updates ? Pinmemberalhambra-eidos2-Jul-09 6:12 
GeneralImproved matching with end-of-text PinmemberAnders Heie11-May-09 16:20 
GeneralRe: Improved matching with end-of-text: some cases don't work properly! Pinmemberroadrunner31412-Aug-09 4:35 
GeneralRe: Improved matching with end-of-text: some cases don't work properly! Pinmembersdiazdiaz20-Jun-13 2:50 

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