Created
January 15, 2014 01:31
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C通配符字符串比较
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bool matchWildcards(const char *pattern, const char *content) { | |
// if we reatch both end of two string, we are done | |
if ('\0' == *pattern && '\0' == *content) | |
return true; | |
/* make sure that the characters after '*' are present in second string. | |
this function assumes that the first string will not contain two | |
consecutive '*'*/ | |
if ('*' == *pattern && '\0' != *(pattern + 1) && '\0' == *content) | |
return false; | |
// if the first string contains '?', or current characters of both | |
// strings match | |
if ('?' == *pattern || *pattern == *content) | |
return matchWildcards(pattern + 1, content + 1); | |
/* if there is *, then there are two possibilities | |
a) We consider current character of second string | |
b) We ignore current character of second string.*/ | |
if ('*' == *pattern) | |
return matchWildcards(pattern + 1, content) || matchWildcards(pattern, content + 1); | |
return false; | |
} | |
bool compareWildcards(const char *pattern,const char *content) { | |
if (NULL == pattern || NULL == content) | |
return NO; | |
return matchWildcards(pattern, content); | |
} | |
-(bool) compareWildcards:(NSString *)pattern pattern:(NSString *)content{ | |
return compareWildcards([pattern UTF8String], [content UTF8String]); | |
} |
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