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Wildcard string compare (globbing)

, 15 Feb 2005 819K 94
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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

 
GeneralRe: Case Insensitive wildcmp Pin
Techiex23-Mar-04 9:33
memberTechiex23-Mar-04 9:33 
GeneralRe: Case Insensitive wildcmp Pin
DavidCrow23-Feb-05 2:24
memberDavidCrow23-Feb-05 2:24 
GeneralRe: Case Insensitive wildcmp Pin
Vic Mackey23-Feb-05 8:00
memberVic Mackey23-Feb-05 8:00 
GeneralRe: Case Insensitive wildcmp Pin
DavidCrow23-Feb-05 8:22
memberDavidCrow23-Feb-05 8:22 
GeneralRe: Case Insensitive wildcmp Pin
f_randy12-Jun-06 18:13
memberf_randy12-Jun-06 18:13 
GeneralExcellent code! Pin
Hans Dietrich16-Jul-03 19:40
memberHans Dietrich16-Jul-03 19:40 
Generalchecking for null Pin
Jack Handy13-Mar-03 20:38
memberJack 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 Pin
Anonymous15-Mar-03 20:10
sussAnonymous15-Mar-03 20:10 
GeneralRe: checking for null Pin
Jack Handy18-Mar-03 13:25
memberJack Handy18-Mar-03 13:25 
Generalgreat code, but ... Pin
Anonymous12-Mar-03 3:17
sussAnonymous12-Mar-03 3:17 
GeneralRe: great code, but ... Pin
Jack Handy13-Mar-03 20:34
memberJack Handy13-Mar-03 20:34 
GeneralRe: great code, but ... Pin
Anonymous15-Mar-03 20:08
sussAnonymous15-Mar-03 20:08 
GeneralRe: great code, but ... Pin
Jack Handy18-Mar-03 13:25
memberJack Handy18-Mar-03 13:25 
GeneralRe: great code, but ... Pin
Anonymous19-Mar-03 23:13
sussAnonymous19-Mar-03 23:13 
GeneralNice Pin
Chris Richardson16-Jan-03 10:58
memberChris Richardson16-Jan-03 10:58 
GeneralRe: Nice Pin
Jack Handy20-Jan-03 11:56
memberJack Handy20-Jan-03 11:56 
GeneralCool Code Pin
Anonymous6-Dec-02 11:09
sussAnonymous6-Dec-02 11:09 
GeneralRe: Cool Code Pin
hector santos1-Mar-03 1:53
memberhector santos1-Mar-03 1:53 
GeneralRe: Cool Code Pin
Kent C. Dorner2-Mar-03 5:32
sussKent C. Dorner2-Mar-03 5:32 
GeneralRe: Cool Code Pin
gebrudergrimm28-Dec-03 10:18
membergebrudergrimm28-Dec-03 10:18 
GeneralRe: Cool Code Pin
BrcKcc15-Jun-04 8:18
memberBrcKcc15-Jun-04 8:18 
GeneralYes man - you a really cool developer Pin
Stanislav Panasik23-Oct-02 19:06
memberStanislav Panasik23-Oct-02 19:06 
GeneralRe: Yes man - you a really cool developer Pin
Anonymous28-Mar-04 13:43
sussAnonymous28-Mar-04 13:43 
GeneralPseudo Code... Pin
blahblah18-Apr-02 10:45
memberblahblah18-Apr-02 10:45 
GeneralRe: Pseudo Code... Pin
Targys8-Jan-03 2:43
memberTargys8-Jan-03 2:43 

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