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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

 
Generaldelphi port [modified] Pin
vovach777, 23-Dec-14 4:38
membervovach77723-Dec-14 4:38 
QuestionMy vote of 5+ Pin
Sanmayce, 29-Nov-13 8:47
memberSanmayce29-Nov-13 8:47 
GeneralMy vote of 5 Pin
Franc Morales, 29-May-13 16:47
memberFranc Morales29-May-13 16:47 
Questionhelp required for wilcard matching * and # Pin
SaimaAsif, 24-Feb-12 0:56
memberSaimaAsif24-Feb-12 0:56 
GeneralMy vote of 5 Pin
Plamen Petrov, 13-Dec-11 22:37
memberPlamen Petrov13-Dec-11 22:37 
SuggestionModification with '#' as wildcard joker for digits [modified] Pin
Thomas Haase, 26-Sep-11 0:16
memberThomas Haase26-Sep-11 0:16 
First of all I like this code, it is small and fully stand-alone.
I have modified it, because I need an additional wildcard joker that represents digits. Finally the modified function accepts '*', '?' and '#' as joker characters.

int wildcmp_ex(const char *wild, const char *string) {
  const char *cp = NULL, *mp = NULL;
 
  while (*string) {
    if (*wild == '*') {
      if (!*++wild) {
        return 1;
      }
      mp = wild;
      cp = string+1;
    } else if (((*wild == *string) && (*wild != '#')) || (*wild == '?') || ((*wild == '#') && isdigit(*string))) {
      wild++;
      string++;
    } else {
      if (mp)
      {
        wild = mp;
        string = cp++;
      }
      else
      {
        return 0;
      }
    }
  }
 
  while (*wild == '*') {
    wild++;
  }
  return !*wild;
}
Thomas Haase


modified 29-Sep-11 8:26am.

QuestionLicence Question Pin
randommark, 23-Nov-10 1:33
memberrandommark23-Nov-10 1:33 
AnswerAnother C# version, with a twist Pin
tomlev, 29-Jun-10 15:50
membertomlev29-Jun-10 15:50 
GeneralObscurity Pin
Chuck O'Toole, 25-Apr-10 19:18
memberChuck O'Toole25-Apr-10 19:18 
AnswerMy C# contribution - recursive, of course! Pin
RenniePet, 26-Mar-10 6:21
memberRenniePet26-Mar-10 6:21 
GeneralRe: My C# contribution - recursive, of course! Pin
Erwin de GRoot, 29-Mar-10 2:58
memberErwin de GRoot29-Mar-10 2:58 
GeneralDepends on whether you need to optimize the last few nanoseconds out of it... Pin
RenniePet, 29-Mar-10 8:45
memberRenniePet29-Mar-10 8:45 
GeneralSorry - revised numbers Pin
RenniePet, 29-Mar-10 9:35
memberRenniePet29-Mar-10 9:35 
GeneralRe: Depends on whether you need to optimize the last few nanoseconds out of it... Pin
Erwin de GRoot, 29-Mar-10 9:37
memberErwin de GRoot29-Mar-10 9:37 
GeneralYet another version - 25% faster, I think [modified] Pin
RenniePet, 1-Apr-10 9:24
memberRenniePet1-Apr-10 9:24 
GeneralRe: Yet another version - 25% faster, I think Pin
aleks1k, 21-Sep-11 3:47
memberaleks1k21-Sep-11 3:47 
QuestionI used this function but I how I can catch variables from the * ??? Pin
moh.hijjawi, 20-Oct-09 2:55
membermoh.hijjawi20-Oct-09 2:55 
AnswerRe: I used this function but I how I can catch variables from the * ??? Pin
RenniePet, 1-Apr-10 12:27
memberRenniePet1-Apr-10 12:27 
Questionany updates ? Pin
alhambra-eidos, 2-Jul-09 6:12
memberalhambra-eidos2-Jul-09 6:12 
GeneralImproved matching with end-of-text Pin
Anders Heie, 11-May-09 16:20
memberAnders Heie11-May-09 16:20 
GeneralRe: Improved matching with end-of-text: some cases don't work properly! Pin
roadrunner314, 12-Aug-09 4:35
memberroadrunner31412-Aug-09 4:35 
GeneralRe: Improved matching with end-of-text: some cases don't work properly! Pin
sdiazdiaz, 20-Jun-13 2:50
membersdiazdiaz20-Jun-13 2:50 
QuestionPathMatchSpec instead? Pin
kintz, 25-Mar-09 9:55
memberkintz25-Mar-09 9:55 
AnswerRe: PathMatchSpec instead? Pin
MandatoryDefault, 31-Aug-09 11:39
memberMandatoryDefault31-Aug-09 11:39 
Questionwchar_t version? Pin
rmorales87, 29-Nov-08 21:16
memberrmorales8729-Nov-08 21:16 
AnswerRe: wchar_t version? Pin
razvar, 31-Mar-11 22:49
memberrazvar31-Mar-11 22:49 
Generalwildcmp in XBLite Pin
CodeGibbon, 27-Nov-08 14:56
memberCodeGibbon27-Nov-08 14:56 
GeneralWildcard string compare in C# Pin
haiquang, 10-Nov-08 23:15
memberhaiquang10-Nov-08 23:15 
GeneralRe: Wildcard string compare in C# Pin
haiquang, 3-Aug-09 23:22
memberhaiquang3-Aug-09 23:22 
GeneralC# Direct Port Pin
hempels, 23-Sep-08 16:10
memberhempels23-Sep-08 16:10 
General...and yet another C# port [modified] Pin
DVF, 27-Aug-10 17:59
memberDVF27-Aug-10 17:59 
GeneralRe: ...and yet another C# port Pin
VUnreal, 21-Sep-10 12:22
memberVUnreal21-Sep-10 12:22 
General[Message Removed] Pin
stonber, 18-Sep-08 15:22
memberstonber18-Sep-08 15:22 
GeneralUsing in Artistic Style Pin
jimp02, 3-Apr-08 5:43
memberjimp023-Apr-08 5:43 
GeneralGeez... Pin
larryfr, 5-Mar-08 10:39
memberlarryfr5-Mar-08 10:39 
QuestionConvert to a replace? Pin
williaps, 20-Mar-07 9:31
memberwilliaps20-Mar-07 9:31 
GeneralC# RexExp version Pin
spinsane, 4-Nov-06 7:30
memberspinsane4-Nov-06 7:30 
GeneralKudos Pin
quantumred, 14-Oct-06 5:37
memberquantumred14-Oct-06 5:37 
GeneralRe: Kudos Pin
milkplus, 24-Feb-10 12:19
membermilkplus24-Feb-10 12:19 
Generalwildcmp(&quot;*&amp;lt;*&amp;gt;&quot;, &quot;&amp;lt;field1&amp;gt;&amp;lt;field2&amp;gt;&quot;) not working [modified] Pin
Daniel B., 6-Sep-06 14:14
memberDaniel B.6-Sep-06 14:14 
GeneralRe: wildcmp(&quot;*&amp;lt;*&amp;gt;&quot;, &quot;&amp;lt;field1&amp;gt;&amp;lt;field2&amp;gt;&quot;) not working Pin
radboudp, 16-Feb-07 1:35
memberradboudp16-Feb-07 1:35 
Generalreturn value type Pin
wdx04, 8-Jan-06 16:49
memberwdx048-Jan-06 16:49 
General*? case match Pin
talimu, 4-Nov-05 0:42
membertalimu4-Nov-05 0:42 
GeneralRe: *? case match Pin
kuhnm, 15-Sep-06 3:18
memberkuhnm15-Sep-06 3:18 
GeneralRe: *? case match Pin
kuhnm, 18-Sep-06 5:48
memberkuhnm18-Sep-06 5:48 
GeneralGets my 5 Pin
Franc Morales, 18-Oct-05 18:05
memberFranc Morales18-Oct-05 18:05 
Generalmp and cp Pin
twopieman, 15-Mar-05 12:59
membertwopieman15-Mar-05 12:59 
GeneralRe: mp and cp Pin
radboudp, 16-Feb-07 2:14
memberradboudp16-Feb-07 2:14 
GeneralOK, but ... Pin
Sam Levy, 16-Feb-05 5:48
memberSam Levy16-Feb-05 5:48 
QuestionWhy make 3 loop ? Pin
DarkYoda Mickael, 2-Feb-05 23:22
memberDarkYoda Mickael2-Feb-05 23:22 

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