diff options
| -rw-r--r-- | src/hashcomp.cpp | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/src/hashcomp.cpp b/src/hashcomp.cpp index 33dcea307..168bcbe0f 100644 --- a/src/hashcomp.cpp +++ b/src/hashcomp.cpp @@ -80,16 +80,16 @@ size_t nspace::hash<insp_inaddr>::operator()(const insp_inaddr &a) const size_t nspace::hash<string>::operator()(const string &s) const { - char a[s.length()]; - size_t t = 0; - static struct hash<const char *> strhash; - - for (const char* x = s.c_str(); *x; x++) /* Faster to do it this way than */ - a[t++] = lowermap[(unsigned char)*x]; /* Seperate strlcpy and strlower */ - - a[t] = 0; - - return strhash(a); + /* XXX: NO DATA COPIES! :) + * The hash function here is practically + * a copy of the one in STL's hash_fun.h, + * only with *x replaced with lowermap[*x]. + * This avoids a copy to use hash<const char*> + */ + unsigned long t = 0; + for (const char* x = s.c_str(); *x; x++) + t = 5 * t + lowermap[(unsigned char)*x]; + return size_t(t); } bool irc::StrHashComp::operator()(const std::string& s1, const std::string& s2) const |