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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.

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About the Author

Jack Handy
Web Developer
United States United States
No Biography provided

Comments and Discussions

 
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 
toupper doesnt support char characters. You could optimize this code.
This code compares also multilingual characters
 


#include

#define BIT5 0x20

char buf[] = "this is ®Ñê test";
char *pbuf;

int lower(int ch);


int lower(int ch)
{
if ((ch==64)||(ch==91)||(ch==92)||(ch==93))
return ch &= ~(ch & BIT5);
return ch |= BIT5;
}

int wildcmp(char *wild, char *string) {
char *cp, *mp;

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;
}
 

int main() {

for (pbuf = &buf[0]; *pbuf; ++pbuf)
*pbuf= lower (*pbuf);

if (wildcmp("*®ñê*", buf)){
printf ("match : %s \n", buf);
} else {
printf ("not match: %s \n",buf);
}
}



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 
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 

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