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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

About the Author

Jack Handy
Web Developer
United States United States
No Biography provided

Comments and Discussions

 
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 
GeneralRe: Case Insensitive wildcmp PinmemberTechiex23-Mar-04 9:33 
GeneralRe: Case Insensitive wildcmp PinmemberDavidCrow23-Feb-05 2:24 
GeneralRe: Case Insensitive wildcmp PinmemberVic Mackey23-Feb-05 8:00 
GeneralRe: Case Insensitive wildcmp PinmemberDavidCrow23-Feb-05 8:22 
GeneralRe: Case Insensitive wildcmp Pinmemberf_randy12-Jun-06 18:13 
GeneralExcellent code! PinmemberHans Dietrich16-Jul-03 19:40 
Generalchecking for null PinmemberJack Handy13-Mar-03 20:38 
I've seen a few people in these boards complain that I didn't check for null pointers in this function. This is a C function and the last time I checked, passing NULL to strcmp or any other C string function will segfault. I'm not saying this is great, and if you wanted to add a check for null, that would be fine. I just don't think that this is a 'bug' (if you can even call it that) worth flaming an otherwise great function.
 
-Jack
 

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


GeneralRe: checking for null PinsussAnonymous15-Mar-03 20:10 
GeneralRe: checking for null PinmemberJack Handy18-Mar-03 13:25 
Generalgreat code, but ... PinsussAnonymous12-Mar-03 3:17 
GeneralRe: great code, but ... PinmemberJack Handy13-Mar-03 20:34 
GeneralRe: great code, but ... PinsussAnonymous15-Mar-03 20:08 
GeneralRe: great code, but ... PinmemberJack Handy18-Mar-03 13:25 
GeneralRe: great code, but ... PinsussAnonymous19-Mar-03 23:13 
GeneralNice PinmemberChris Richardson16-Jan-03 10:58 
GeneralRe: Nice PinmemberJack Handy20-Jan-03 11:56 
GeneralCool Code PinsussAnonymous6-Dec-02 11:09 
GeneralRe: Cool Code Pinmemberhector santos1-Mar-03 1:53 
GeneralRe: Cool Code PinsussKent C. Dorner2-Mar-03 5:32 
GeneralRe: Cool Code Pinmembergebrudergrimm28-Dec-03 10:18 
GeneralRe: Cool Code PinmemberBrcKcc15-Jun-04 8:18 
GeneralYes man - you a really cool developer PinmemberStanislav Panasik23-Oct-02 19:06 
GeneralRe: Yes man - you a really cool developer PinsussAnonymous28-Mar-04 13:43 
GeneralPseudo Code... Pinmemberblahblah18-Apr-02 10:45 
GeneralRe: Pseudo Code... PinmemberTargys8-Jan-03 2:43 
Generaltoo complicated PinmemberThe C++ Guru21-Mar-02 21:31 
GeneralRe: too complicated PinmemberBig Spender22-Mar-02 0:23 
GeneralRe: too complicated PinmemberThe C++ Guru22-Mar-02 0:34 
GeneralRe: too complicated PinmemberJack Handy22-Mar-02 15:23 
GeneralRe: too complicated PinmemberThe C++ Guru22-Mar-02 21:40 
GeneralRe: too complicated PinmemberJack Handy22-Mar-02 22:26 
GeneralRe: too complicated PinmemberHockey19-Apr-03 9:25 
GeneralRe: too complicated Pinmemberdouglashogan25-Jan-04 12:34 
GeneralRe: too complicated PinmemberJack Handy25-Jan-04 12:40 
GeneralRe: too complicated Pinmemberdouglashogan25-Jan-04 12:50 
GeneralRe: too complicated PinmemberJim Bob22-Mar-02 15:29 
GeneralRe: too complicated PinmemberSimon Capewell22-May-02 2:48 
GeneralRe: too complicated PinmemberTargys8-Jan-03 1:57 
GeneralRe: too complicated PinsussThe C++ Guru24-Feb-03 10:43 
GeneralRe: too complicated PinmemberJack Handy24-Feb-03 16:52 
GeneralRe: too complicated Pinmemberhector santos1-Mar-03 1:49 

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