1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
7 * <brain@chatspike.net>
8 * <Craig@chatspike.net>
10 * Written by Craig Edwards, Craig McLure, and others.
11 * This program is free but copyrighted software; see
12 * the file COPYING for details.
14 * ---------------------------------------------------
20 #include "inspircd_config.h"
24 /*******************************************************
25 * This file contains classes and templates that deal
26 * with the comparison and hashing of 'irc strings'.
27 * An 'irc string' is a string which compares in a
28 * case insensitive manner, and as per RFC 1459 will
29 * treat [ identical to {, ] identical to }, and \
32 * Our hashing functions are designed to accept
33 * std::string and compare/hash them as type irc::string
34 * by converting them internally. This makes them
35 * backwards compatible with other code which is not
36 * aware of irc::string.
37 *******************************************************/
40 using irc::sockets::insp_aton;
41 using irc::sockets::insp_ntoa;
42 using irc::sockets::insp_inaddr;
46 void strlower(char *n);
48 template<> struct hash<insp_inaddr>
50 size_t operator()(const insp_inaddr &a) const;
53 template<> struct hash<std::string>
55 size_t operator()(const string &s) const;
59 /** The irc namespace contains a number of helper classes.
64 /** This class returns true if two strings match.
65 * Case sensitivity is ignored, and the RFC 'character set'
70 /** The operator () does the actual comparison in hash_map
72 bool operator()(const std::string& s1, const std::string& s2) const;
76 /** This class returns true if two insp_inaddr structs match.
77 * Checking is done by copying both into a size_t then doing a
78 * numeric comparison of the two.
80 struct InAddr_HashComp
82 /** The operator () does the actual comparison in hash_map
84 bool operator()(const insp_inaddr &s1, const insp_inaddr &s2) const;
87 /** irc::tokenstream reads a string formatted as per RFC1459 and RFC2812.
88 * It will split the string into 'tokens' each containing one parameter
90 * For instance, if it is instantiated with the string:
91 * "PRIVMSG #test :foo bar baz qux"
92 * then each successive call to tokenstream::GetToken() will return
93 * "PRIVMSG", "#test", "foo bar baz qux", "".
94 * Note that if the whole string starts with a colon this is not taken
95 * to mean the string is all one parameter, and the first item in the
96 * list will be ":item". This is to allow for parsing 'source' fields
103 std::string::iterator last_starting_position;
104 std::string::iterator n;
107 /** Create a tokenstream and fill it with the provided data
109 tokenstream(const std::string &source);
112 /** Fetch the next token from the stream
113 * @returns The next token is returned, or an empty string if none remain
115 const std::string GetToken();
118 /** irc::commasepstream allows for splitting comma seperated lists.
119 * Lists passed to irc::commasepstream should not contain spaces
120 * after the commas, or this will be taken to be part of the item
121 * data. Each successive call to commasepstream::GetToken() returns
122 * the next token, until none remain, at which point the method returns
129 std::string::iterator last_starting_position;
130 std::string::iterator n;
132 /** Create a commasepstream and fill it with the provided data
134 commasepstream(const std::string &source);
137 /** Fetch the next token from the stream
138 * @returns The next token is returned, or an empty string if none remain
140 const std::string GetToken();
144 /** The irc_char_traits class is used for RFC-style comparison of strings.
145 * This class is used to implement irc::string, a case-insensitive, RFC-
146 * comparing string class.
148 struct irc_char_traits : std::char_traits<char> {
150 /** Check if two chars match
152 static bool eq(char c1st, char c2nd);
154 /** Check if two chars do NOT match
156 static bool ne(char c1st, char c2nd);
158 /** Check if one char is less than another
160 static bool lt(char c1st, char c2nd);
162 /** Compare two strings of size n
164 static int compare(const char* str1, const char* str2, size_t n);
166 /** Find a char within a string up to position n
168 static const char* find(const char* s1, int n, char c);
171 /** This typedef declares irc::string based upon irc_char_traits
173 typedef basic_string<char, irc_char_traits, allocator<char> > string;
176 /* Define operators for using >> and << with irc::string to an ostream on an istream. */
177 /* This was endless fun. No. Really. */
178 /* It was also the first core change Ommeh made, if anyone cares */
180 std::ostream& operator<<(std::ostream &os, const irc::string &str);
181 std::istream& operator>>(std::istream &is, irc::string &str);
183 /* Define operators for + and == with irc::string to std::string for easy assignment
184 * and comparison - Brain
187 std::string operator+ (std::string& leftval, irc::string& rightval);
188 irc::string operator+ (irc::string& leftval, std::string& rightval);
189 bool operator== (std::string& leftval, irc::string& rightval);
190 bool operator== (irc::string& leftval, std::string& rightval);