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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

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Comments and Discussions

 
GeneralGets my 5 Pin
Franc Morales18-Oct-05 17:05
memberFranc Morales18-Oct-05 17:05 
Generalmp and cp Pin
twopieman15-Mar-05 11:59
membertwopieman15-Mar-05 11:59 
GeneralRe: mp and cp Pin
radboudp16-Feb-07 1:14
memberradboudp16-Feb-07 1:14 
GeneralOK, but ... Pin
Sam Levy16-Feb-05 4:48
memberSam Levy16-Feb-05 4:48 
QuestionWhy make 3 loop ? Pin
DarkYoda Mickael2-Feb-05 22:22
memberDarkYoda Mickael2-Feb-05 22:22 
AnswerRe: Why make 3 loop ? Pin
Jack Handy13-Feb-05 10:02
memberJack Handy13-Feb-05 10:02 
GeneralC# version Pin
Sancy26-Oct-04 6:23
memberSancy26-Oct-04 6:23 
GeneralRe: C# version Pin
Psyk6621-Dec-04 3:39
sussPsyk6621-Dec-04 3:39 
GeneralRe: C# version Pin
Ionut FIlip22-Feb-05 6:15
memberIonut FIlip22-Feb-05 6:15 
GeneralRe: C# version Pin
robagar3-Apr-06 16:58
memberrobagar3-Apr-06 16:58 
GeneralRe: C# version Pin
Sancy5-Jun-06 16:01
memberSancy5-Jun-06 16:01 
GeneralConvert to java base on C# version [modified, better look :~ ] Pin
quangtin321-Mar-08 21:13
memberquangtin321-Mar-08 21:13 
GeneralRe: C# version - an error! Pin
Mark T.4-Jul-08 14:37
memberMark T.4-Jul-08 14:37 
GeneralRe: C# version Pin
williamhix17-Oct-08 22:28
memberwilliamhix17-Oct-08 22:28 
GeneralMany thanks, with 1 small gripe .. Pin
David Patrick29-Sep-04 8:41
memberDavid Patrick29-Sep-04 8:41 
GeneralRe: Many thanks, with 1 small gripe .. Pin
Jack Handy6-Oct-04 8:13
memberJack Handy6-Oct-04 8:13 
GeneralRe: Many thanks, with 1 small gripe .. Pin
Vic Mackey16-Oct-04 19:33
memberVic Mackey16-Oct-04 19:33 
I disagree. The return value for strcmp() is more than simply a test for equality, it tells you which string is greater than the other. A zero return value for strcmp() makes sense, but not for wildcmp() since the return value is strictly boolean, match or no match. The current implementation is fine (although some people might be picky about the return type, int vs bool). Perhaps to avoid confusion with string comparison functions, the function should be renamed to wildmatch() or something similar.

GeneralRe: Many thanks, with 1 small gripe .. Pin
Voja Intermajstor24-Nov-04 23:26
memberVoja Intermajstor24-Nov-04 23:26 
GeneralNice code... Pin
voja2125-Aug-04 2:30
membervoja2125-Aug-04 2:30 
GeneralSlight efficiency improvement Pin
Bill Buklis9-Jul-04 6:53
memberBill Buklis9-Jul-04 6:53 
GeneralRe: Slight efficiency improvement Pin
Bill Buklis9-Jul-04 7:19
memberBill Buklis9-Jul-04 7:19 
QuestionPathMatchSpec (shlwapi.h)? Pin
peterchen28-Jun-04 6:56
memberpeterchen28-Jun-04 6:56 
AnswerRe: PathMatchSpec (shlwapi.h)? Pin
Jack Handy13-Feb-05 9:56
memberJack Handy13-Feb-05 9:56 
GeneralDoesnt seem to work well.. Pin
Bikram Singh13-May-04 1:56
sussBikram Singh13-May-04 1:56 
GeneralRe: Doesnt seem to work well.. Pin
Jack Handy21-Jun-04 9:13
memberJack Handy21-Jun-04 9:13 

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