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Wildcard string compare (globbing)

, 15 Feb 2005 813.8K 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: My C# contribution - recursive, of course! Pin
Erwin de GRoot29-Mar-10 1:58
memberErwin de GRoot29-Mar-10 1:58 
GeneralDepends on whether you need to optimize the last few nanoseconds out of it... Pin
RenniePet29-Mar-10 7:45
memberRenniePet29-Mar-10 7:45 
GeneralSorry - revised numbers Pin
RenniePet29-Mar-10 8:35
memberRenniePet29-Mar-10 8:35 
GeneralRe: Depends on whether you need to optimize the last few nanoseconds out of it... Pin
Erwin de GRoot29-Mar-10 8:37
memberErwin de GRoot29-Mar-10 8:37 
GeneralYet another version - 25% faster, I think [modified] Pin
RenniePet1-Apr-10 8:24
memberRenniePet1-Apr-10 8:24 
GeneralRe: Yet another version - 25% faster, I think Pin
aleks1k21-Sep-11 2:47
memberaleks1k21-Sep-11 2:47 
QuestionI used this function but I how I can catch variables from the * ??? Pin
moh.hijjawi20-Oct-09 1:55
membermoh.hijjawi20-Oct-09 1:55 
AnswerRe: I used this function but I how I can catch variables from the * ??? Pin
RenniePet1-Apr-10 11:27
memberRenniePet1-Apr-10 11:27 
Questionany updates ? Pin
alhambra-eidos2-Jul-09 5:12
memberalhambra-eidos2-Jul-09 5:12 
GeneralImproved matching with end-of-text Pin
Anders Heie11-May-09 15:20
memberAnders Heie11-May-09 15:20 
GeneralRe: Improved matching with end-of-text: some cases don't work properly! Pin
roadrunner31412-Aug-09 3:35
memberroadrunner31412-Aug-09 3:35 
GeneralRe: Improved matching with end-of-text: some cases don't work properly! Pin
sdiazdiaz20-Jun-13 1:50
membersdiazdiaz20-Jun-13 1:50 
QuestionPathMatchSpec instead? Pin
kintz25-Mar-09 8:55
memberkintz25-Mar-09 8:55 
AnswerRe: PathMatchSpec instead? Pin
MandatoryDefault31-Aug-09 10:39
memberMandatoryDefault31-Aug-09 10:39 
Questionwchar_t version? Pin
rmorales8729-Nov-08 20:16
memberrmorales8729-Nov-08 20:16 
AnswerRe: wchar_t version? Pin
razvar31-Mar-11 21:49
memberrazvar31-Mar-11 21:49 
Generalwildcmp in XBLite Pin
CodeGibbon27-Nov-08 13:56
memberCodeGibbon27-Nov-08 13:56 
This is the version of the wildcmp function in XBLite programming language:

FUNCTION SBYTE wildcmp( wildcard$, search$)
  ' wildcmp(const char *wild, const char *string)
  ' Written by Jack Handy - jakkhandy@hotmail.com
 
  ULONG cp
  ULONG mp
  
  STRING s_txt$
  ULONG  sp 
  
  STRING w_txt$
  ULONG  wp
 
  IFZ search$   THEN RETURN $$FALSE  
  IFZ wildcard$ THEN RETURN $$FALSE
  
  w_txt$ = wildcard$ + "\0\0"   ' Just to be sure
  s_txt$ = search$   + "\0\0"
  
  DO WHILE (s_txt${sp}) && (w_txt${wp} != '*') 
    IF (w_txt${wp} != s_txt${sp} )  && (w_txt${wp} != '?') THEN RETURN $$FALSE
    
    INC wp
    INC sp
  LOOP
    
  DO WHILE (s_txt${sp})
    IF ( w_txt${wp} == '*' ) THEN    
      INC wp
      IF !(w_txt${wp}) THEN RETURN $$TRUE      
      
      mp = wp     
      cp = sp + 1 
    ELSE 
      IF (w_txt${wp} == s_txt${sp} )  || (w_txt${wp} == '?') THEN    
        INC wp
        INC sp
      ELSE
        wp = mp
      
        sp = cp                   
        IF s_txt${sp} THEN INC cp 
       
      ENDIF
    ENDIF  
  LOOP
    
  DO WHILE (w_txt${wp} == '*' )    
    INC wp
  LOOP
  
  RETURN !w_txt${wp} 
 
END FUNCTION
 

GeneralWildcard string compare in C# Pin
haiquang10-Nov-08 22:15
memberhaiquang10-Nov-08 22:15 
GeneralRe: Wildcard string compare in C# Pin
haiquang3-Aug-09 22:22
memberhaiquang3-Aug-09 22:22 
GeneralC# Direct Port Pin
hempels23-Sep-08 15:10
memberhempels23-Sep-08 15:10 
General...and yet another C# port [modified] Pin
DVF27-Aug-10 16:59
memberDVF27-Aug-10 16:59 
GeneralRe: ...and yet another C# port Pin
VUnreal21-Sep-10 11:22
memberVUnreal21-Sep-10 11:22 
General[Message Removed] Pin
stonber18-Sep-08 14:22
memberstonber18-Sep-08 14:22 
GeneralUsing in Artistic Style Pin
jimp023-Apr-08 4:43
memberjimp023-Apr-08 4:43 
GeneralGeez... Pin
larryfr5-Mar-08 9:39
memberlarryfr5-Mar-08 9:39 

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