-/* +------------------------------------+
- * | Inspire Internet Relay Chat Daemon |
- * +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
*
- * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
- * E-mail:
- * <brain@chatspike.net>
- * <Craig@chatspike.net>
+ * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
+ * Copyright (C) 2005-2009 Craig Edwards <craigedwards@brainbox.cc>
+ * Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
+ * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
*
- * Written by Craig Edwards, Craig McLure, and others.
- * This program is free but copyrighted software; see
- * the file COPYING for details.
+ * This file is part of InspIRCd. InspIRCd is free software: you can
+ * redistribute it and/or modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation, version 2.
*
- * ---------------------------------------------------
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-using namespace std;
+
+/* $Core */
#include "inspircd.h"
#include "hashcomp.h"
-#include <ext/hash_map>
-#define nspace __gnu_cxx
/******************************************************
*
* scene spend a lot of time debating (arguing) about
* the best way to write hash functions to hash irc
* nicknames, channels etc.
- * We are lucky as C++ developers as hash_map does
+ * We are lucky as C++ developers as unordered_map does
* a lot of this for us. It does intellegent memory
* requests, bucketing, search functions, insertion
* and deletion etc. All we have to do is write some
* Scandanavian Comparisons: The characters [, ], \ will
* be considered the lowercase of {, } and |.
*
- * This file also contains hashing methods for hashing
- * insp_inaddr structs, we use this if we want to cache IP
- * addresses.
- *
******************************************************/
-using namespace std;
-using namespace irc::sockets;
-/* convert a string to lowercase. Note following special circumstances
- * taken from RFC 1459. Many "official" server branches still hold to this
- * rule so i will too;
- *
- * Because of IRC's scandanavian origin, the characters {}| are
- * considered to be the lower case equivalents of the characters []\,
- * respectively. This is a critical issue when determining the
- * equivalence of two nicknames.
+/**
+ * A case insensitive mapping of characters from upper case to lower case for
+ * the ASCII character set.
+ */
+unsigned const char ascii_case_insensitive_map[256] = {
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, // 0-9
+ 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, // 10-19
+ 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, // 20-29
+ 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, // 30-39
+ 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, // 40-49
+ 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, // 50-59
+ 60, 61, 62, 63, 64, 97, 98, 99, 100, 101, // 60-69
+ 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, // 70-79
+ 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, // 80-89
+ 122, 91, 92, 93, 94, 95, 96, 97, 98, 99, // 90-99
+ 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, // 100-109
+ 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, // 110-119
+ 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, // 120-129
+ 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, // 130-139
+ 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, // 140-149
+ 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, // 150-159
+ 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, // 160-169
+ 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, // 170-179
+ 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, // 180-189
+ 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, // 190-199
+ 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, // 200-209
+ 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, // 210-219
+ 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, // 220-229
+ 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, // 230-249
+ 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, // 240-249
+ 250, 251, 252, 253, 254, 255, // 250-255
+};
+
+
+
+/**
+ * A case insensitive mapping of characters from upper case to lower case for
+ * the character set of RFC 1459. This is identical to ASCII with the small
+ * exception of {}| being considered to be the lower case equivalents of the
+ * characters []\ respectively.
*/
-void nspace::strlower(char *n)
+unsigned const char rfc_case_insensitive_map[256] = {
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, // 0-9
+ 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, // 10-19
+ 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, // 20-29
+ 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, // 30-39
+ 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, // 40-49
+ 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, // 50-59
+ 60, 61, 62, 63, 64, 97, 98, 99, 100, 101, // 60-69
+ 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, // 70-79
+ 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, // 80-89
+ 122, 123, 124, 125, 94, 95, 96, 97, 98, 99, // 90-99
+ 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, // 100-109
+ 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, // 110-119
+ 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, // 120-129
+ 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, // 130-139
+ 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, // 140-149
+ 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, // 150-159
+ 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, // 160-169
+ 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, // 170-179
+ 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, // 180-189
+ 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, // 190-199
+ 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, // 200-209
+ 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, // 210-219
+ 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, // 220-229
+ 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, // 230-239
+ 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, // 240-249
+ 250, 251, 252, 253, 254, 255, // 250-255
+};
+
+/**
+ * A case sensitive mapping of characters from upper case to lower case for the
+ * character set of RFC 1459. This is identical to ASCII.
+ */
+unsigned const char rfc_case_sensitive_map[256] = {
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, // 0-9
+ 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, // 10-19
+ 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, // 20-29
+ 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, // 30-39
+ 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, // 40-49
+ 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, // 50-59
+ 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, // 60-69
+ 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, // 70-79
+ 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, // 80-89
+ 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, // 90-99
+ 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, // 100-109
+ 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, // 110-119
+ 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, // 120-129
+ 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, // 130-139
+ 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, // 140-149
+ 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, // 150-159
+ 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, // 160-169
+ 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, // 170-179
+ 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, // 180-189
+ 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, // 190-199
+ 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, // 200-209
+ 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, // 210-219
+ 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, // 220-229
+ 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, // 230-239
+ 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, // 240-249
+ 250, 251, 252, 253, 254, 255, // 250-255
+};
+
+size_t CoreExport irc::hash::operator()(const irc::string &s) const
{
- if (n)
- {
- for (char* t = n; *t; t++)
- *t = lowermap[(unsigned char)*t];
- }
+ register size_t t = 0;
+ for (irc::string::const_iterator x = s.begin(); x != s.end(); ++x) /* ++x not x++, as its faster */
+ t = 5 * t + national_case_insensitive_map[(unsigned char)*x];
+ return t;
}
-size_t nspace::hash<insp_inaddr>::operator()(const insp_inaddr &a) const
+bool irc::StrHashComp::operator()(const std::string& s1, const std::string& s2) const
{
- size_t q;
- memcpy(&q,&a,sizeof(size_t));
- return q;
+ const unsigned char* n1 = (const unsigned char*)s1.c_str();
+ const unsigned char* n2 = (const unsigned char*)s2.c_str();
+ for (; *n1 && *n2; n1++, n2++)
+ if (national_case_insensitive_map[*n1] != national_case_insensitive_map[*n2])
+ return false;
+ return (national_case_insensitive_map[*n1] == national_case_insensitive_map[*n2]);
}
-size_t nspace::hash<string>::operator()(const string &s) const
+size_t irc::insensitive::operator()(const std::string &s) const
{
/* 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].
+ * only with *x replaced with national_case_insensitive_map[*x].
* This avoids a copy to use hash<const char*>
*/
register size_t t = 0;
for (std::string::const_iterator x = s.begin(); x != s.end(); ++x) /* ++x not x++, as its faster */
- t = 5 * t + lowermap[(unsigned char)*x];
+ t = 5 * t + national_case_insensitive_map[(unsigned char)*x];
return t;
}
-bool irc::StrHashComp::operator()(const std::string& s1, const std::string& s2) const
-{
- unsigned char* n1 = (unsigned char*)s1.c_str();
- unsigned char* n2 = (unsigned char*)s2.c_str();
- for (; *n1 && *n2; n1++, n2++)
- if (lowermap[*n1] != lowermap[*n2])
- return false;
- return (lowermap[*n1] == lowermap[*n2]);
-}
-
-bool irc::InAddr_HashComp::operator()(const insp_inaddr &s1, const insp_inaddr &s2) const
-{
-#ifdef IPV6
- for (int n = 0; n < 16; n++)
- if (s2.s6_addr[n] != s1.s6_addr[n])
- return false;
- return true;
-#else
- return (s1.s_addr == s1.s_addr);
-#endif
-}
-
/******************************************************
*
* This is the implementation of our special irc::string
* std::string which is not only case-insensitive but
* can also do scandanavian comparisons, e.g. { = [, etc.
*
- * This class depends on the const array 'lowermap'.
+ * This class depends on the const array 'national_case_insensitive_map'.
*
******************************************************/
bool irc::irc_char_traits::eq(char c1st, char c2nd)
{
- return lowermap[(unsigned char)c1st] == lowermap[(unsigned char)c2nd];
+ return national_case_insensitive_map[(unsigned char)c1st] == national_case_insensitive_map[(unsigned char)c2nd];
}
bool irc::irc_char_traits::ne(char c1st, char c2nd)
{
- return lowermap[(unsigned char)c1st] != lowermap[(unsigned char)c2nd];
+ return national_case_insensitive_map[(unsigned char)c1st] != national_case_insensitive_map[(unsigned char)c2nd];
}
bool irc::irc_char_traits::lt(char c1st, char c2nd)
{
- return lowermap[(unsigned char)c1st] < lowermap[(unsigned char)c2nd];
+ return national_case_insensitive_map[(unsigned char)c1st] < national_case_insensitive_map[(unsigned char)c2nd];
}
int irc::irc_char_traits::compare(const char* str1, const char* str2, size_t n)
{
for(unsigned int i = 0; i < n; i++)
{
- if(lowermap[(unsigned char)*str1] > lowermap[(unsigned char)*str2])
- return 1;
+ if(national_case_insensitive_map[(unsigned char)*str1] > national_case_insensitive_map[(unsigned char)*str2])
+ return 1;
- if(lowermap[(unsigned char)*str1] < lowermap[(unsigned char)*str2])
- return -1;
+ if(national_case_insensitive_map[(unsigned char)*str1] < national_case_insensitive_map[(unsigned char)*str2])
+ return -1;
if(*str1 == 0 || *str2 == 0)
- return 0;
+ return 0;
- str1++;
+ str1++;
str2++;
}
return 0;
}
-std::string operator+ (std::string& leftval, irc::string& rightval)
-{
- return leftval + std::string(rightval.c_str());
-}
-
-irc::string operator+ (irc::string& leftval, std::string& rightval)
-{
- return leftval + irc::string(rightval.c_str());
-}
-
-bool operator== (std::string& leftval, irc::string& rightval)
-{
- return (leftval.c_str() == rightval);
-}
-
-bool operator== (irc::string& leftval, std::string& rightval)
-{
- return (leftval == rightval.c_str());
-}
-
const char* irc::irc_char_traits::find(const char* s1, int n, char c)
{
- while(n-- > 0 && lowermap[(unsigned char)*s1] != lowermap[(unsigned char)c])
+ while(n-- > 0 && national_case_insensitive_map[(unsigned char)*s1] != national_case_insensitive_map[(unsigned char)c])
s1++;
- return s1;
-}
-
-/* See hashcomp.h if you care about these... */
-std::ostream& operator<<(std::ostream &os, const irc::string &str)
-{
- return os << str.c_str();
-}
-
-std::istream& operator>>(std::istream &is, irc::string &str)
-{
- std::string tmp;
- is >> tmp;
- str = tmp.c_str();
- return is;
+ return (n >= 0) ? s1 : NULL;
}
irc::tokenstream::tokenstream(const std::string &source) : tokens(source), last_pushed(false)
{
}
-const std::string irc::tokenstream::GetToken()
+bool irc::tokenstream::GetToken(std::string &token)
{
std::string::iterator lsp = last_starting_position;
*/
std::string::iterator curr = ++n;
n = tokens.end();
- return std::string(curr, tokens.end());
+ token = std::string(curr, tokens.end());
+ return true;
}
last_pushed = false;
/* If we find a space, or end of string, this is the end of a token.
*/
last_starting_position = n+1;
- last_pushed = true;
+ last_pushed = *n == ' ';
std::string strip(lsp, n+1 == tokens.end() ? n+1 : n++);
while ((strip.length()) && (strip.find_last_of(' ') == strip.length() - 1))
strip.erase(strip.end() - 1);
- return strip;
+ token = strip;
+ return !token.empty();
}
n++;
}
- return "";
+ token.clear();
+ return false;
+}
+
+bool irc::tokenstream::GetToken(irc::string &token)
+{
+ std::string stdstring;
+ bool returnval = GetToken(stdstring);
+ token = assign(stdstring);
+ return returnval;
+}
+
+bool irc::tokenstream::GetToken(int &token)
+{
+ std::string tok;
+ bool returnval = GetToken(tok);
+ token = ConvToInt(tok);
+ return returnval;
+}
+
+bool irc::tokenstream::GetToken(long &token)
+{
+ std::string tok;
+ bool returnval = GetToken(tok);
+ token = ConvToInt(tok);
+ return returnval;
}
irc::sepstream::sepstream(const std::string &source, char seperator) : tokens(source), sep(seperator)
n = tokens.begin();
}
-const std::string irc::sepstream::GetToken()
+bool irc::sepstream::GetToken(std::string &token)
{
std::string::iterator lsp = last_starting_position;
if ((*n == sep) || (n+1 == tokens.end()))
{
last_starting_position = n+1;
- std::string strip = std::string(lsp, n+1 == tokens.end() ? n+1 : n++);
+ token = std::string(lsp, n+1 == tokens.end() ? n+1 : n++);
- while ((strip.length()) && (strip.find_last_of(sep) == strip.length() - 1))
- strip.erase(strip.end() - 1);
+ while ((token.length()) && (token.find_last_of(sep) == token.length() - 1))
+ token.erase(token.end() - 1);
- return strip;
+ if (token.empty())
+ n++;
+
+ return n == tokens.end() ? false : true;
}
n++;
}
- return "";
+ token.clear();
+ return false;
}
-irc::sepstream::~sepstream()
+const std::string irc::sepstream::GetRemaining()
{
+ return std::string(n, tokens.end());
}
-std::string irc::hex(const unsigned char *raw, size_t rawsz)
+bool irc::sepstream::StreamEnd()
{
- if (!rawsz)
- return "";
-
- /* EWW! This used to be using sprintf, which is WAY inefficient. -Special */
-
- const char *hex = "0123456789abcdef";
-
- char buf[rawsz*2+1];
-
- size_t i, j;
- for (i = 0, j = 0; j < rawsz; ++j)
- {
- buf[i++] = hex[raw[j] / 16];
- buf[i++] = hex[raw[j] % 16];
- }
- buf[i] = '\0';
-
- return buf;
+ return ((n + 1) == tokens.end());
}
-const char* irc::Spacify(char* n)
+irc::sepstream::~sepstream()
{
- static char x[MAXBUF];
- strlcpy(x,n,MAXBUF);
- for (char* y = x; *y; y++)
- if (*y == '_')
- *y = ' ';
- return x;
}
-
irc::modestacker::modestacker(bool add) : adding(add)
{
sequence.clear();
this->Push('-',"");
}
-int irc::modestacker::GetStackedLine(std::deque<std::string> &result)
+int irc::modestacker::GetStackedLine(std::vector<std::string> &result, int max_line_size)
{
- int n = 0;
- result.clear();
- result.push_back(adding ? "+" : "-");
+ if (sequence.empty())
+ {
+ return 0;
+ }
+
+ unsigned int n = 0;
+ int size = 1; /* Account for initial +/- char */
+ int nextsize = 0;
+ int start = result.size();
+ std::string modeline = adding ? "+" : "-";
+ result.push_back(modeline);
- while (!sequence[0].empty() && (sequence.size() > 1) && (result.size() < MAXMODES+1))
+ if (sequence.size() > 1)
+ nextsize = sequence[1].length() + 2;
+
+ while (!sequence[0].empty() && (sequence.size() > 1) && (n < ServerInstance->Config->Limits.MaxModes) && ((size + nextsize) < max_line_size))
{
- result[0] += *(sequence[0].begin());
+ modeline += *(sequence[0].begin());
if (!sequence[1].empty())
+ {
result.push_back(sequence[1]);
+ size += nextsize; /* Account for mode character and whitespace */
+ }
sequence[0].erase(sequence[0].begin());
sequence.erase(sequence.begin() + 1);
+
+ if (sequence.size() > 1)
+ nextsize = sequence[1].length() + 2;
+
n++;
}
+ result[start] = modeline;
return n;
}
-irc::stringjoiner::stringjoiner(const std::string &seperator, const std::vector<std::string> &sequence, int begin, int end)
+irc::stringjoiner::stringjoiner(const std::string& seperator, const std::vector<std::string>& sequence, unsigned int begin, unsigned int end)
{
- for (int v = begin; v < end; v++)
- joined.append(sequence[v]).append(seperator);
- joined.append(sequence[end]);
-}
+ if (end < begin)
+ return; // nothing to do here
-irc::stringjoiner::stringjoiner(const std::string &seperator, const std::deque<std::string> &sequence, int begin, int end)
-{
- for (int v = begin; v < end; v++)
+ for (unsigned int v = begin; v < end; v++)
joined.append(sequence[v]).append(seperator);
joined.append(sequence[end]);
}
-irc::stringjoiner::stringjoiner(const std::string &seperator, const char** sequence, int begin, int end)
-{
- for (int v = begin; v < end; v++)
- joined.append(sequence[v]).append(seperator);
- joined.append(sequence[end]);
-}
-
-std::string& irc::stringjoiner::GetJoined()
+const std::string& irc::stringjoiner::GetJoined() const
{
return joined;
}
-irc::portparser::portparser(const std::string &source, bool allow_overlapped) : in_range(0), range_begin(0), range_end(0), overlapped(allow_overlapped)
-{
- sep = new irc::commasepstream(source);
- overlap_set.clear();
-}
-
-irc::portparser::~portparser()
+irc::portparser::portparser(const std::string &source, bool allow_overlapped)
+ : sep(source), in_range(0), range_begin(0), range_end(0), overlapped(allow_overlapped)
{
- delete sep;
}
bool irc::portparser::Overlaps(long val)
{
- if (!overlapped)
+ if (overlapped)
return false;
- if (overlap_set.find(val) == overlap_set.end())
- {
- overlap_set[val] = true;
- return false;
- }
- else
- return true;
+ return (!overlap_set.insert(val).second);
}
long irc::portparser::GetToken()
{
while (((Overlaps(in_range)) && (in_range <= range_end)))
in_range++;
-
+
if (in_range <= range_end)
return in_range;
}
in_range = 0;
}
- std::string x = sep->GetToken();
+ std::string x;
+ sep.GetToken(x);
- if (x == "")
+ if (x.empty())
return 0;
while (Overlaps(atoi(x.c_str())))
{
- x = sep->GetToken();
-
- if (x == "")
+ if (!sep.GetToken(x))
return 0;
}
return atoi(x.c_str());
}
}
-
-irc::dynamicbitmask::dynamicbitmask() : bits_size(4)
-{
- /* We start with 4 bytes allocated which is room
- * for 4 items. Something makes me doubt its worth
- * allocating less than 4 bytes.
- */
- bits = new unsigned char[bits_size];
- memset(bits, 0, bits_size);
-}
-
-irc::dynamicbitmask::~dynamicbitmask()
-{
- /* Tidy up the entire used memory on delete */
- delete[] bits;
-}
-
-irc::bitfield irc::dynamicbitmask::Allocate()
-{
- /* Yeah, this isnt too efficient, however a module or the core
- * should only be allocating bitfields on load, the Toggle and
- * Get methods are O(1) as these are called much more often.
- */
- unsigned char* freebits = this->GetFreeBits();
- for (unsigned char i = 0; i < bits_size; i++)
- {
- /* Yes, this is right. You'll notice we terminate the loop when !current_pos,
- * this is because we logic shift our bit off the end of unsigned char, and its
- * lost, making the loop counter 0 when we're done.
- */
- for (unsigned char current_pos = 1; current_pos; current_pos = current_pos << 1)
- {
- if (!(freebits[i] & current_pos))
- {
- freebits[i] |= current_pos;
- return std::make_pair(i, current_pos);
- }
- }
- }
- /* We dont have any free space left, increase by one */
-
- if (bits_size == 255)
- /* Oh dear, cant grow it any further */
- throw std::bad_alloc();
-
- unsigned char old_bits_size = bits_size;
- bits_size++;
- /* Allocate new bitfield space */
- unsigned char* temp_bits = new unsigned char[bits_size];
- unsigned char* temp_freebits = new unsigned char[bits_size];
- /* Copy the old data in */
- memcpy(temp_bits, bits, old_bits_size);
- memcpy(temp_freebits, freebits, old_bits_size);
- /* Delete the old data pointers */
- delete[] bits;
- delete[] freebits;
- /* Swap the pointers over so now the new
- * pointers point to our member values
- */
- bits = temp_bits;
- freebits = temp_freebits;
- this->SetFreeBits(freebits);
- /* Initialize the new byte on the end of
- * the bitfields, pre-allocate the one bit
- * for this allocation
- */
- bits[old_bits_size] = 0;
- freebits[old_bits_size] = 1;
- /* We already know where we just allocated
- * the bitfield, so no loop needed
- */
- return std::make_pair(old_bits_size, 1);
-}
-
-bool irc::dynamicbitmask::Deallocate(irc::bitfield &pos)
-{
- /* We dont bother to shrink the bitfield
- * on deallocation, the most we could do
- * is save one byte (!) and this would cost
- * us a loop (ugly O(n) stuff) so we just
- * clear the bit and leave the memory
- * claimed -- nobody will care about one
- * byte.
- */
- if (pos.first < bits_size)
- {
- this->GetFreeBits()[pos.first] &= ~pos.second;
- return true;
- }
- /* They gave a bitfield outside of the
- * length of our array. BAD programmer.
- */
- return false;
-}
-
-void irc::dynamicbitmask::Toggle(irc::bitfield &pos, bool state)
-{
- /* Range check the value */
- if (pos.first < bits_size)
- {
- if (state)
- /* Set state, OR the state in */
- bits[pos.first] |= pos.second;
- else
- /* Clear state, AND the !state out */
- bits[pos.first] &= ~pos.second;
- }
-}
-
-bool irc::dynamicbitmask::Get(irc::bitfield &pos)
-{
- /* Range check the value */
- if (pos.first < bits_size)
- return (bits[pos.first] & pos.second);
- else
- /* We can't return false, otherwise we can't
- * distinguish between failure and a cleared bit!
- * Our only sensible choice is to throw (ew).
- */
- throw ModuleException("irc::dynamicbitmask::Get(): Invalid bitfield, out of range");
-}
-
-unsigned char irc::dynamicbitmask::GetSize()
-{
- return bits_size;
-}
-
projects / user / henk / code / inspircd.git / blobdiff