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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

 
GeneralYes man - you a really cool developer PinmemberStanislav Panasik23-Oct-02 20:06 
GeneralRe: Yes man - you a really cool developer PinsussAnonymous28-Mar-04 14:43 
GeneralPseudo Code... Pinmemberblahblah18-Apr-02 11:45 
GeneralRe: Pseudo Code... PinmemberTargys8-Jan-03 3:43 
Generaltoo complicated PinmemberThe C++ Guru21-Mar-02 22:31 
GeneralRe: too complicated PinmemberBig Spender22-Mar-02 1:23 
GeneralRe: too complicated PinmemberThe C++ Guru22-Mar-02 1:34 
GeneralRe: too complicated PinmemberJack Handy22-Mar-02 16:23 
GeneralRe: too complicated PinmemberThe C++ Guru22-Mar-02 22:40 
GeneralRe: too complicated PinmemberJack Handy22-Mar-02 23:26 
GeneralRe: too complicated PinmemberHockey19-Apr-03 10:25 
GeneralRe: too complicated Pinmemberdouglashogan25-Jan-04 13:34 
GeneralRe: too complicated PinmemberJack Handy25-Jan-04 13:40 
GeneralRe: too complicated Pinmemberdouglashogan25-Jan-04 13:50 
It is just clearer to use C++ gurus style. I take a lot of code from code project and am very grateful for it. With most of the classes i have to make some modification or other as I am writing a commercial application which often requires tweaks. I need wildcard matching in a number of places but maybe a little more than * and ?. Therefore, the first thing i considered was how i could add extra tokens. It appears at a glance that c++ gurus code is easier to grasp.
 
I understand pointer arithmethic just fine, and i believe the claim that your code is twice as fast. It is more important for me to have bug free code as wildcard comparison functionality is carried out on a very small scale in my application. Any bugs are headaches. I am firmly a c/c++ devotee and hate all the luggage that comes with .NET, VB, etc. But we can have a small tradeoff for readability in the general case. Why give those guys ammunition for their 'C/C++ code is unreadable and only hacks use it' argument?
 
No offense but i will use the gurus code because i have my reasons. It is not fair to blindly knock it though.
 
anyway, it is better you submitted this article than no article.
 
cheers Blush | :O
 

GeneralRe: too complicated PinmemberJim Bob22-Mar-02 16:29 
GeneralRe: too complicated PinmemberSimon Capewell22-May-02 3:48 
GeneralRe: too complicated PinmemberTargys8-Jan-03 2:57 
GeneralRe: too complicated PinsussThe C++ Guru24-Feb-03 11:43 
GeneralRe: too complicated PinmemberJack Handy24-Feb-03 17:52 
GeneralRe: too complicated Pinmemberhector santos1-Mar-03 2:49 
GeneralRe: too complicated PinsussKent C. Dorner2-Mar-03 6:26 
GeneralRe: too complicated Pinmemberhector santos2-Mar-03 11:05 
GeneralRe: too complicated PinmemberJack Handy2-Jun-03 14:56 
GeneralRe: too complicated PinsussAnonymous2-Jun-03 15:48 
GeneralRe: too complicated PinsussAnonymous4-Dec-03 19:29 
GeneralRe: too complicated Pinmemberolegxxx4-Mar-05 20:24 
GeneralSweet! PinmemberEpicBoy1-Feb-02 17:08 
GeneralRe: Sweet! PinmemberMichael Dunn1-Feb-02 18:10 
GeneralRe: Sweet! PinmemberSteve Mallam13-May-02 1:29 
GeneralI found this very useful. PinmemberTodd Smith4-Jan-02 15:40 
GeneralTest Cases PinmemberPaul McGuire4-Dec-01 13:00 
GeneralRe: Test Cases PinmemberLee Elenbaas10-Sep-08 0:05 
GeneralSuper fast code - super, but... PinmemberRene Rassnitzer23-Aug-01 7:24 
GeneralGreat Code Pinmembermediamaster404-Jul-01 21:18 
GeneralRe: Great Code PinmemberAnonymous5-Jul-01 11:24 
GeneralRe: Great Code Pinmembersiukurnin4-Jul-02 3:15 
GeneralRe: Great Code PinsussThe C++ Guru8-Sep-02 8:22 
GeneralRe: Great Code PinsussAnonymous4-Dec-03 19:53 
Generalwildcmp("fold","??*"); PinmemberVadim Chavarha24-May-01 9:43 
GeneralRe: wildcmp( PinmemberJack Handy29-May-01 11:01 
GeneralNot DOS compatible PinmemberMiroslav Rajcic2-May-01 4:56 
GeneralRe: Not DOS compatible PinmemberJack Handy2-May-01 13:03 
GeneralRe: Not DOS compatible PinmemberMiroslav Rajcic7-May-01 0:04 
GeneralDOS compatible workaround PinmemberFredrik Wangel5-Jul-01 2:47 
GeneralRe: Not DOS compatible PinmemberW2k27-Dec-02 14:26 
QuestionWhy, oh why only? PinmemberAnonymous2-May-01 3:17 
AnswerRe: Why, oh why only? PinmemberSimon Capewell2-May-01 3:39 
GeneralRe: Why, oh why only? PinmemberAnonymous5-Jul-01 11:27 
AnswerRe: Why, oh why only? PinmemberPaul McGuire4-Dec-01 5:18 

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