1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
* E-mail:
* <brain@chatspike.net>
* <Craig@chatspike.net>
*
* Written by Craig Edwards, Craig McLure, and others.
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#ifndef _HASHCOMP_H_
#define _HASHCOMP_H_
#include "inspircd_config.h"
/*******************************************************
* This file contains classes and templates that deal
* with the comparison and hashing of 'irc strings'.
* An 'irc string' is a string which compares in a
* case insensitive manner, and as per RFC 1459 will
* treat [ identical to {, ] identical to }, and \
* as identical to |.
*
* Our hashing functions are designed to accept
* std::string and compare/hash them as type irc::string
* by converting them internally. This makes them
* backwards compatible with other code which is not
* aware of irc::string.
*******************************************************/
#ifdef GCC3
#include <ext/hash_map>
#else
#include <hash_map>
#endif
#ifdef GCC3
#define nspace __gnu_cxx
#else
#define nspace std
#endif
using namespace std;
namespace nspace
{
#ifdef GCC34
template<> struct hash<in_addr>
#else
template<> struct nspace::hash<in_addr>
#endif
{
size_t operator()(const struct in_addr &a) const;
};
#ifdef GCC34
template<> struct hash<string>
#else
template<> struct nspace::hash<string>
#endif
{
size_t operator()(const string &s) const;
};
}
/** The irc namespace contains a number of helper classes.
*/
namespace irc
{
/** This class returns true if two strings match.
* Case sensitivity is ignored, and the RFC 'character set'
* is adhered to
*/
struct StrHashComp
{
/** The operator () does the actual comparison in hash_map
*/
bool operator()(const std::string& s1, const std::string& s2) const;
};
/** This class returns true if two in_addr structs match.
* Checking is done by copying both into a size_t then doing a
* numeric comparison of the two.
*/
struct InAddr_HashComp
{
/** The operator () does the actual comparison in hash_map
*/
bool operator()(const in_addr &s1, const in_addr &s2) const;
};
/** The irc_char_traits class is used for RFC-style comparison of strings.
* This class is used to implement irc::string, a case-insensitive, RFC-
* comparing string class.
*/
struct irc_char_traits : std::char_traits<char> {
/** Check if two chars match
*/
static bool eq(char c1st, char c2nd);
/** Check if two chars do NOT match
*/
static bool ne(char c1st, char c2nd);
/** Check if one char is less than another
*/
static bool lt(char c1st, char c2nd);
/** Compare two strings of size n
*/
static int compare(const char* str1, const char* str2, size_t n);
/** Find a char within a string up to position n
*/
static const char* find(const char* s1, int n, char c);
};
/** This typedef declares irc::string based upon irc_char_traits
*/
typedef basic_string<char, irc_char_traits, allocator<char> > string;
}
/* Define operators for using >> and << with irc::string to an ostream on an istream. */
/* This was endless fun. No. Really. */
/* It was also the first core change Ommeh made, if anyone cares */
std::ostream& operator<<(std::ostream &os, const irc::string &str);
std::istream& operator>>(std::istream &is, irc::string &str);
/* Define operators for + and == with irc::string to std::string for easy assignment
* and comparison - Brain
*/
std::string& operator+ (std::string& leftval, irc::string& rightval);
irc::string& operator+ (irc::string& leftval, std::string& rightval);
std::string& operator== (std::string& leftval, irc::string& rightval);
irc::string& operator== (irc::string& leftval, std::string& rightval);
#endif
|
