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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.

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About the Author

Jack Handy
Web Developer
United States United States
No Biography provided

Comments and Discussions

 
GeneralRe: too complicated PinmemberHockey19-Apr-03 10:25 
GeneralRe: too complicated Pinmemberdouglashogan25-Jan-04 13:34 
GeneralRe: too complicated PinmemberJack Handy25-Jan-04 13:40 
GeneralRe: too complicated Pinmemberdouglashogan25-Jan-04 13:50 
GeneralRe: too complicated PinmemberJim Bob22-Mar-02 16:29 
GeneralRe: too complicated PinmemberSimon Capewell22-May-02 3:48 
GeneralRe: too complicated PinmemberTargys8-Jan-03 2:57 
GeneralRe: too complicated PinsussThe C++ Guru24-Feb-03 11:43 
a bit more gentle?
 
if you think jack handy's code is more gentle, fine. but i think you're one of the use-and-dont-ask kind of guys then.
 
even if it is the faster solution (which end-user application ever requires a million wildcard matches?) the readability of jack's procedure approaches zero. if you do not recognize this, you're either in the wrong business or talking about things you don't know about.
 
additionally, your 'fit on a floppy' argument is also in the wrong place: my code is shorter, and so is the compiler output.
 
of course i don't mind if you use jack's code. but if i were to maintain the code, i'd prefer my solution.
 
regards

GeneralRe: too complicated PinmemberJack Handy24-Feb-03 17:52 
GeneralRe: too complicated Pinmemberhector santos1-Mar-03 2:49 
GeneralRe: too complicated PinsussKent C. Dorner2-Mar-03 6:26 
GeneralRe: too complicated Pinmemberhector santos2-Mar-03 11:05 
GeneralRe: too complicated PinmemberJack Handy2-Jun-03 14:56 
GeneralRe: too complicated PinsussAnonymous2-Jun-03 15:48 
GeneralRe: too complicated PinsussAnonymous4-Dec-03 19:29 
GeneralRe: too complicated Pinmemberolegxxx4-Mar-05 20:24 
GeneralSweet! PinmemberEpicBoy1-Feb-02 17:08 
GeneralRe: Sweet! PinmemberMichael Dunn1-Feb-02 18:10 
GeneralRe: Sweet! PinmemberSteve Mallam13-May-02 1:29 
GeneralI found this very useful. PinmemberTodd Smith4-Jan-02 15:40 
GeneralTest Cases PinmemberPaul McGuire4-Dec-01 13:00 
GeneralRe: Test Cases PinmemberLee Elenbaas10-Sep-08 0:05 
GeneralSuper fast code - super, but... PinmemberRene Rassnitzer23-Aug-01 7:24 
GeneralGreat Code Pinmembermediamaster404-Jul-01 21:18 
GeneralRe: Great Code PinmemberAnonymous5-Jul-01 11:24 

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