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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: C# version Pin
Psyk66 at 21-Dec-04 4:39
sussPsyk6621-Dec-04 4:39 
GeneralRe: C# version Pin
Ionut FIlip at 22-Feb-05 7:15
memberIonut FIlip22-Feb-05 7:15 
GeneralRe: C# version Pin
robagar at 3-Apr-06 17:58
memberrobagar3-Apr-06 17:58 
GeneralRe: C# version Pin
Sancy at 5-Jun-06 17:01
memberSancy5-Jun-06 17:01 
GeneralConvert to java base on C# version [modified, better look :~ ] Pin
quangtin3 at 21-Mar-08 22:13
memberquangtin321-Mar-08 22:13 
GeneralRe: C# version - an error! Pin
Mark T. at 4-Jul-08 15:37
memberMark T.4-Jul-08 15:37 
GeneralRe: C# version Pin
williamhix at 17-Oct-08 23:28
memberwilliamhix17-Oct-08 23:28 
GeneralMany thanks, with 1 small gripe .. Pin
David Patrick at 29-Sep-04 9:41
memberDavid Patrick29-Sep-04 9:41 

most C compare functions return zero when the values are equal, but this function returns non-zero.

Personally, I find the non-zero to be more intuitive .. but after years of forcing myself to check for zero I find it a bit counter-intuitive.

I think I'll just rename the function when I add it to my library Smile | :)

But that certainly wont stop me from using this wonderful routine.

Many sincere thanks ...


GeneralRe: Many thanks, with 1 small gripe .. Pin
Jack Handy at 6-Oct-04 9:13
memberJack Handy6-Oct-04 9:13 
GeneralRe: Many thanks, with 1 small gripe .. Pin
Vic Mackey at 16-Oct-04 20:33
memberVic Mackey16-Oct-04 20:33 
GeneralRe: Many thanks, with 1 small gripe .. Pin
Voja Intermajstor at 25-Nov-04 0:26
memberVoja Intermajstor25-Nov-04 0:26 
GeneralNice code... Pin
voja21 at 25-Aug-04 3:30
membervoja2125-Aug-04 3:30 
GeneralSlight efficiency improvement Pin
Bill Buklis at 9-Jul-04 7:53
memberBill Buklis9-Jul-04 7:53 
GeneralRe: Slight efficiency improvement Pin
Bill Buklis at 9-Jul-04 8:19
memberBill Buklis9-Jul-04 8:19 
QuestionPathMatchSpec (shlwapi.h)? Pin
peterchen at 28-Jun-04 7:56
memberpeterchen28-Jun-04 7:56 
AnswerRe: PathMatchSpec (shlwapi.h)? Pin
Jack Handy at 13-Feb-05 10:56
memberJack Handy13-Feb-05 10:56 
GeneralDoesnt seem to work well.. Pin
Bikram Singh at 13-May-04 2:56
sussBikram Singh13-May-04 2:56 
GeneralRe: Doesnt seem to work well.. Pin
Jack Handy at 21-Jun-04 10:13
memberJack Handy21-Jun-04 10:13 
GeneralCase Insensitive wildcmp Pin
Techiex at 16-Mar-04 10:36
memberTechiex16-Mar-04 10:36 
GeneralRe: Case Insensitive wildcmp Pin
Neville Franks at 16-Mar-04 10:52
memberNeville Franks16-Mar-04 10:52 
GeneralRe: Case Insensitive wildcmp Pin
Techiex at 23-Mar-04 10:33
memberTechiex23-Mar-04 10:33 
GeneralRe: Case Insensitive wildcmp Pin
DavidCrow at 23-Feb-05 3:24
memberDavidCrow23-Feb-05 3:24 
GeneralRe: Case Insensitive wildcmp Pin
Vic Mackey at 23-Feb-05 9:00
memberVic Mackey23-Feb-05 9:00 
GeneralRe: Case Insensitive wildcmp Pin
DavidCrow at 23-Feb-05 9:22
memberDavidCrow23-Feb-05 9:22 
GeneralRe: Case Insensitive wildcmp Pin
f_randy at 12-Jun-06 19:13
memberf_randy12-Jun-06 19:13 

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