mirror of
https://github.com/inspircd/inspircd.git
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9063972162
git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@3868 e03df62e-2008-0410-955e-edbf42e46eb7
139 lines
3.9 KiB
C++
139 lines
3.9 KiB
C++
/* +------------------------------------+
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* | Inspire Internet Relay Chat Daemon |
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* +------------------------------------+
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*
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* InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
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* E-mail:
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* <brain@chatspike.net>
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* <Craig@chatspike.net>
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*
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* Written by Craig Edwards, Craig McLure, and others.
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* This program is free but copyrighted software; see
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* the file COPYING for details.
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*
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* ---------------------------------------------------
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*/
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#ifndef _HASHCOMP_H_
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#define _HASHCOMP_H_
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#include "inspircd_config.h"
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#include "socket.h"
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#include "hash_map.h"
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/*******************************************************
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* This file contains classes and templates that deal
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* with the comparison and hashing of 'irc strings'.
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* An 'irc string' is a string which compares in a
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* case insensitive manner, and as per RFC 1459 will
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* treat [ identical to {, ] identical to }, and \
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* as identical to |.
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*
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* Our hashing functions are designed to accept
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* std::string and compare/hash them as type irc::string
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* by converting them internally. This makes them
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* backwards compatible with other code which is not
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* aware of irc::string.
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*******************************************************/
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using namespace std;
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namespace nspace
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{
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#ifdef GCC34
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template<> struct hash<in_addr>
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#else
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template<> struct nspace::hash<in_addr>
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#endif
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{
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size_t operator()(const struct in_addr &a) const;
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};
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#ifdef GCC34
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template<> struct hash<string>
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#else
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template<> struct nspace::hash<string>
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#endif
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{
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size_t operator()(const string &s) const;
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};
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}
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/** The irc namespace contains a number of helper classes.
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*/
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namespace irc
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{
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/** This class returns true if two strings match.
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* Case sensitivity is ignored, and the RFC 'character set'
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* is adhered to
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*/
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struct StrHashComp
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{
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/** The operator () does the actual comparison in hash_map
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*/
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bool operator()(const std::string& s1, const std::string& s2) const;
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};
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/** This class returns true if two in_addr structs match.
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* Checking is done by copying both into a size_t then doing a
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* numeric comparison of the two.
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*/
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struct InAddr_HashComp
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{
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/** The operator () does the actual comparison in hash_map
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*/
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bool operator()(const in_addr &s1, const in_addr &s2) const;
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};
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/** The irc_char_traits class is used for RFC-style comparison of strings.
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* This class is used to implement irc::string, a case-insensitive, RFC-
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* comparing string class.
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*/
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struct irc_char_traits : std::char_traits<char> {
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/** Check if two chars match
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*/
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static bool eq(char c1st, char c2nd);
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/** Check if two chars do NOT match
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*/
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static bool ne(char c1st, char c2nd);
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/** Check if one char is less than another
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*/
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static bool lt(char c1st, char c2nd);
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/** Compare two strings of size n
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*/
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static int compare(const char* str1, const char* str2, size_t n);
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/** Find a char within a string up to position n
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*/
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static const char* find(const char* s1, int n, char c);
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};
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/** This typedef declares irc::string based upon irc_char_traits
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*/
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typedef basic_string<char, irc_char_traits, allocator<char> > string;
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}
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/* Define operators for using >> and << with irc::string to an ostream on an istream. */
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/* This was endless fun. No. Really. */
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/* It was also the first core change Ommeh made, if anyone cares */
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std::ostream& operator<<(std::ostream &os, const irc::string &str);
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std::istream& operator>>(std::istream &is, irc::string &str);
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/* Define operators for + and == with irc::string to std::string for easy assignment
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* and comparison - Brain
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*/
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std::string operator+ (std::string& leftval, irc::string& rightval);
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irc::string operator+ (irc::string& leftval, std::string& rightval);
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bool operator== (std::string& leftval, irc::string& rightval);
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bool operator== (irc::string& leftval, std::string& rightval);
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#endif
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