]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - src/hashcomp.cpp
Replace std::deque with std::vector in spanningtree and related modules
[user/henk/code/inspircd.git] / src / hashcomp.cpp
index 55bad8bf7a59bbc59be889e2c2d6b446f4d3e316..04c24418c5424f7d0ac620ace63bf4fa4d4f2079 100644 (file)
@@ -2,25 +2,20 @@
  *       | Inspire Internet Relay Chat Daemon |
  *       +------------------------------------+
  *
- *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
- * See: http://www.inspircd.org/wiki/index.php/Credits
+ *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
+ * See: http://wiki.inspircd.org/Credits
  *
  * This program is free but copyrighted software; see
- *            the file COPYING for details.
+ *         the file COPYING for details.
  *
  * ---------------------------------------------------
  */
 
+/* $Core */
+
 #include "inspircd.h"
 #include "hashcomp.h"
-#ifndef WIN32
-#include <ext/hash_map>
-#define nspace __gnu_cxx
-#else
-#include <hash_map>
-#define nspace stdext
-using stdext::hash_map;
-#endif
+#include "hash_map.h"
 
 /******************************************************
  *
@@ -47,8 +42,6 @@ using stdext::hash_map;
  *
  ******************************************************/
 
-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;
@@ -63,48 +56,53 @@ void nspace::strlower(char *n)
        if (n)
        {
                for (char* t = n; *t; t++)
-                       *t = lowermap[(unsigned char)*t];
+                       *t = national_case_insensitive_map[(unsigned char)*t];
        }
 }
 
-#ifndef WIN32
-size_t nspace::hash<string>::operator()(const string &s) const
+#if defined(WINDOWS) && !defined(HASHMAP_DEPRECATED)
+       size_t nspace::hash_compare<std::string, std::less<std::string> >::operator()(const std::string &s) const
 #else
-size_t nspace::hash_compare<string, std::less<string> >::operator()(const string &s) const
+       #ifdef HASHMAP_DEPRECATED
+               size_t CoreExport nspace::insensitive::operator()(const std::string &s) const
+       #else
+               size_t nspace::hash<std::string>::operator()(const std::string &s) const
+       #endif
 #endif
 {
        /* 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;
 }
 
-#ifndef WIN32
-size_t nspace::hash<irc::string>::operator()(const irc::string &s) const
+
+#if defined(WINDOWS) && !defined(HASHMAP_DEPRECATED)
+       size_t nspace::hash_compare<irc::string, std::less<irc::string> >::operator()(const irc::string &s) const
 #else
-size_t nspace::hash_compare<irc::string, std::less<irc::string> >::operator()(const irc::string &s) const
+       size_t CoreExport nspace::hash<irc::string>::operator()(const irc::string &s) const
 #endif
 {
        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 + 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();
+       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 (lowermap[*n1] != lowermap[*n2])
+               if (national_case_insensitive_map[*n1] != national_case_insensitive_map[*n2])
                        return false;
-       return (lowermap[*n1] == lowermap[*n2]);
+       return (national_case_insensitive_map[*n1] == national_case_insensitive_map[*n2]);
 }
 
 /******************************************************
@@ -114,33 +112,33 @@ bool irc::StrHashComp::operator()(const std::string& s1, const std::string& s2)
  * 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])
+               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])
+               if(national_case_insensitive_map[(unsigned char)*str1] < national_case_insensitive_map[(unsigned char)*str2])
                        return -1;
 
                if(*str1 == 0 || *str2 == 0)
@@ -154,9 +152,9 @@ int irc::irc_char_traits::compare(const char* str1, const char* str2, size_t n)
 
 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;
+       return (n >= 0) ? s1 : NULL;
 }
 
 irc::tokenstream::tokenstream(const std::string &source) : tokens(source), last_pushed(false)
@@ -245,7 +243,7 @@ irc::sepstream::sepstream(const std::string &source, char seperator) : tokens(so
        n = tokens.begin();
 }
 
-const std::string irc::sepstream::GetToken()
+bool irc::sepstream::GetToken(std::string &token)
 {
        std::string::iterator lsp = last_starting_position;
 
@@ -254,18 +252,22 @@ const std::string irc::sepstream::GetToken()
                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);
+
+                       if (token.empty())
+                               n++;
 
-                       return strip;
+                       return n == tokens.end() ? false : true;
                }
 
                n++;
        }
 
-       return "";
+       token = "";
+       return false;
 }
 
 const std::string irc::sepstream::GetRemaining()
@@ -288,21 +290,19 @@ std::string irc::hex(const unsigned char *raw, size_t rawsz)
                return "";
 
        /* EWW! This used to be using sprintf, which is WAY inefficient. -Special */
-       
-       const char *hex = "0123456789abcdef";
 
-       std::string buf;
-       buf.reserve(rawsz * 2 + 1);
+       const char *hex = "0123456789abcdef";
+       static char hexbuf[MAXBUF];
 
        size_t i, j;
        for (i = 0, j = 0; j < rawsz; ++j)
        {
-               buf[i++] = hex[raw[j] / 16];
-               buf[i++] = hex[raw[j] % 16];
+               hexbuf[i++] = hex[raw[j] / 16];
+               hexbuf[i++] = hex[raw[j] % 16];
        }
-       buf[i] = '\0';
+       hexbuf[i] = 0;
 
-       return buf;
+       return hexbuf;
 }
 
 CoreExport const char* irc::Spacify(const char* n)
@@ -316,7 +316,7 @@ CoreExport const char* irc::Spacify(const char* n)
 }
 
 
-irc::modestacker::modestacker(bool add) : adding(add)
+irc::modestacker::modestacker(InspIRCd* Instance, bool add) : ServerInstance(Instance), adding(add)
 {
        sequence.clear();
        sequence.push_back("");
@@ -343,26 +343,26 @@ void irc::modestacker::PushMinus()
        this->Push('-',"");
 }
 
-int irc::modestacker::GetStackedLine(std::deque<std::string> &result, int max_line_size)
+int irc::modestacker::GetStackedLine(std::vector<std::string> &result, int max_line_size)
 {
        if (sequence.empty())
        {
-               result.clear();
                return 0;
        }
 
-       int n = 0;
+       unsigned int n = 0;
        int size = 1; /* Account for initial +/- char */
        int nextsize = 0;
-       result.clear();
-       result.push_back(adding ? "+" : "-");
+       int start = result.size();
+       std::string modeline = adding ? "+" : "-";
+       result.push_back(modeline);
 
        if (sequence.size() > 1)
                nextsize = sequence[1].length() + 2;
 
-       while (!sequence[0].empty() && (sequence.size() > 1) && (result.size() < MAXMODES) && ((size + nextsize) < max_line_size))
+       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]);
@@ -376,12 +376,16 @@ int irc::modestacker::GetStackedLine(std::deque<std::string> &result, int max_li
 
                n++;
        }
+       result[start] = modeline;
 
        return n;
 }
 
 irc::stringjoiner::stringjoiner(const std::string &seperator, const std::vector<std::string> &sequence, int begin, int end)
 {
+       if (end < begin)
+               throw "stringjoiner logic error, this causes problems.";
+
        for (int v = begin; v < end; v++)
                joined.append(sequence[v]).append(seperator);
        joined.append(sequence[end]);
@@ -389,13 +393,19 @@ irc::stringjoiner::stringjoiner(const std::string &seperator, const std::vector<
 
 irc::stringjoiner::stringjoiner(const std::string &seperator, const std::deque<std::string> &sequence, int begin, int end)
 {
+       if (end < begin)
+               throw "stringjoiner logic error, this causes problems.";
+
        for (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)
+irc::stringjoiner::stringjoiner(const std::string &seperator, const char* const* sequence, int begin, int end)
 {
+       if (end < begin)
+               throw "stringjoiner logic error, this causes problems.";
+
        for (int v = begin; v < end; v++)
                joined.append(sequence[v]).append(seperator);
        joined.append(sequence[end]);
@@ -446,7 +456,7 @@ long irc::portparser::GetToken()
                        {
                                while (((Overlaps(in_range)) && (in_range <= range_end)))
                                        in_range++;
-                               
+
                                if (in_range <= range_end)
                                        return in_range;
                        }
@@ -455,16 +465,15 @@ long irc::portparser::GetToken()
                        in_range = 0;
        }
 
-       std::string x = sep->GetToken();
+       std::string x;
+       sep->GetToken(x);
 
        if (x.empty())
                return 0;
 
        while (Overlaps(atoi(x.c_str())))
        {
-               x = sep->GetToken();
-
-               if (x.empty())
+               if (!sep->GetToken(x))
                        return 0;
        }
 
@@ -493,129 +502,24 @@ long irc::portparser::GetToken()
        }
 }
 
-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()
+/*const std::basic_string& SearchAndReplace(std::string& text, const std::string& pattern, const std::string& replace)
 {
-       /* 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++)
+       std::string replacement;
+       if ((!pattern.empty()) && (!text.empty()))
        {
-               /* 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)
+               for (std::string::size_type n = 0; n != text.length(); ++n)
                {
-                       if (!(freebits[i] & current_pos))
+                       if (text.length() >= pattern.length() && text.substr(n, pattern.length()) == pattern)
                        {
-                               freebits[i] |= current_pos;
-                               return std::make_pair(i, current_pos);
+                               replacement.append(replace);
+                               n = n + pattern.length() - 1;
+                       }
+                       else
+                       {
+                               replacement += text[n];
                        }
                }
        }
-       /* 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;
-}
-
+       text = replacement;
+       return text;
+}*/