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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: mp and cp Pinmemberradboudp16-Feb-07 1:14 
GeneralOK, but ... PinmemberSam Levy16-Feb-05 4:48 
QuestionWhy make 3 loop ? PinmemberDarkYoda Mickael2-Feb-05 22:22 
AnswerRe: Why make 3 loop ? PinmemberJack Handy13-Feb-05 10:02 
GeneralC# version PinmemberSancy26-Oct-04 6:23 
GeneralRe: C# version PinsussPsyk6621-Dec-04 3:39 
GeneralRe: C# version PinmemberIonut FIlip22-Feb-05 6:15 
GeneralRe: C# version Pinmemberrobagar3-Apr-06 16:58 
GeneralRe: C# version PinmemberSancy5-Jun-06 16:01 
GeneralConvert to java base on C# version [modified, better look :~ ] Pinmemberquangtin321-Mar-08 21:13 
GeneralRe: C# version - an error! PinmemberMark T.4-Jul-08 14:37 
GeneralRe: C# version Pinmemberwilliamhix17-Oct-08 22:28 
GeneralMany thanks, with 1 small gripe .. PinmemberDavid Patrick29-Sep-04 8:41 
GeneralRe: Many thanks, with 1 small gripe .. PinmemberJack Handy6-Oct-04 8:13 
David Patrick wrote:
most C compare functions return zero when the values are equal, but this function returns non-zero.
 
You make a good point. I probably should have made it behave like the strcmp() type functions. I'm a bit afraid to change it at this point since it has been posted for so long. It should be an easy fix for you or anyone else who is used to C style string comparisons. The C++ people here probably like the current behavior I would imagine.
 
-Jack
 

There are 10 types of people in this world, those that understand binary and those who don't.


GeneralRe: Many thanks, with 1 small gripe .. PinmemberVic Mackey16-Oct-04 19:33 
GeneralRe: Many thanks, with 1 small gripe .. PinmemberVoja Intermajstor24-Nov-04 23:26 
GeneralNice code... Pinmembervoja2125-Aug-04 2:30 
GeneralSlight efficiency improvement PinmemberBill Buklis9-Jul-04 6:53 
GeneralRe: Slight efficiency improvement PinmemberBill Buklis9-Jul-04 7:19 
QuestionPathMatchSpec (shlwapi.h)? Pinmemberpeterchen28-Jun-04 6:56 
AnswerRe: PathMatchSpec (shlwapi.h)? PinmemberJack Handy13-Feb-05 9:56 
GeneralDoesnt seem to work well.. PinsussBikram Singh13-May-04 1:56 
GeneralRe: Doesnt seem to work well.. PinmemberJack Handy21-Jun-04 9:13 
GeneralCase Insensitive wildcmp PinmemberTechiex16-Mar-04 9:36 
GeneralRe: Case Insensitive wildcmp PinmemberNeville Franks16-Mar-04 9:52 

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