Added options:casemap to chose how case insensitive strings are compared, using ascii, rfc1459, or a locale installed on the system

1 files changed, 39 insertions, 220 deletions

diff --git a/include/hashcomp.h b/include/hashcomp.h
index 0a9df7139..f3621a52f 100644
--- a/include/hashcomp.h
+++ b/include/hashcomp.h
@@ -14,129 +14,56 @@
 #define HASHCOMP_H
 
 #include <string>
+#include <locale>
 
 #include "services.h"
 
 namespace Anope
 {
 	class string;
-}
 
-/*******************************************************
- * 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.
- *******************************************************/
+	extern std::locale casemap;
 
-/** A mapping of uppercase to lowercase, including scandinavian
- * 'oddities' as specified by RFC1459, e.g. { -> [, and | -> \
- */
-unsigned const char rfc_case_insensitive_map[256] = {
-	0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,                                   /* 0-19 */
-	20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39,                         /* 20-39 */
-	40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59,                         /* 40-59 */
-	60, 61, 62, 63, 64, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111,             /* 60-79 */
-	112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 94, 95, 96, 97, 98, 99,           /* 80-99 */
-	100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119,     /* 100-119 */
-	120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139,     /* 120-139 */
-	140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159,     /* 140-159 */
-	160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179,     /* 160-179 */
-	180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199,     /* 180-199 */
-	200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219,     /* 200-219 */
-	220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239,     /* 220-239 */
-	240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255                          /* 240-255 */
-};
-
-/** Case insensitive map, ASCII rules.
- * That is;
- * [ != {, but A == a.
- */
-unsigned const char ascii_case_insensitive_map[256] = {
-	0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,                                   /* 0-19 */
-	20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39,                         /* 20-39 */
-	40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59,                         /* 40-59 */
-	60, 61, 62, 63, 64, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111,             /* 60-79 */
-	112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 91, 92, 93, 94, 95, 96, 97, 98, 99,              /* 80-99 */
-	100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119,     /* 100-119 */
-	120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139,     /* 120-139 */
-	140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159,     /* 140-159 */
-	160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179,     /* 160-179 */
-	180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199,     /* 180-199 */
-	200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219,     /* 200-219 */
-	220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239,     /* 220-239 */
-	240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255                          /* 240-255 */
-};
-
-/** The irc namespace contains a number of helper classes.
- */
-namespace irc
-{
-	/** 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>
+	template<typename charT>
+	class ascii_ctype : public std::ctype<charT>
 	{
-		/** Check if two chars match.
-		 * @param c1st First character
-		 * @param c2nd Second character
-		 * @return true if the characters are equal
-		 */
-		static bool eq(char c1st, char c2nd);
-
-		/** Check if two chars do NOT match.
-		 * @param c1st First character
-		 * @param c2nd Second character
-		 * @return true if the characters are unequal
-		 */
-		static bool ne(char c1st, char c2nd);
-
-		/** Check if one char is less than another.
-		 * @param c1st First character
-		 * @param c2nd Second character
-		 * @return true if c1st is less than c2nd
-		 */
-		static bool lt(char c1st, char c2nd);
-
-		/** Compare two strings of size n.
-		 * @param str1 First string
-		 * @param str2 Second string
-		 * @param n Length to compare to
-		 * @return similar to strcmp, zero for equal, less than zero for str1
-		 * being less and greater than zero for str1 being greater than str2.
-		 */
-		static int compare(const char *str1, const char *str2, size_t n);
-
-		/** Find a char within a string up to position n.
-		 * @param s1 String to find in
-		 * @param n Position to search up to
-		 * @param c Character to search for
-		 * @return Pointer to the first occurance of c in s1
-		 */
-		static const char *find(const char *s1, int n, char c);
+	 public:
+		charT do_toupper(charT c) const anope_override
+		{
+			if (c >= 'a' && c <= 'z')
+				return c - 32;
+			else
+				return c;
+		}
+
+		charT do_tolower(charT c) const anope_override
+		{
+			if (c >= 'A' && c <= 'Z')
+				return c + 32;
+			else
+				return c;
+		}
 	};
 
-	/** This typedef declares irc::string based upon irc_char_traits.
-	 */
-	typedef std::basic_string<char, irc_char_traits, std::allocator<char> > string;
-
-	struct CoreExport less
+	template<typename charT>
+	class rfc1459_ctype : public ascii_ctype<charT>
 	{
-		/** Compare two Anope::strings as irc::strings and find which one is less
-		 * @param s1 The first string
-		 * @param s2 The second string
-		 * @return true if s1 < s2, else false
-		 */
-		bool operator()(const Anope::string &s1, const Anope::string &s2) const;
+	 public:
+		charT do_toupper(charT c) const anope_override
+		{
+			if (c == '{' || c == '}' || c == '|')
+				return c - 32;
+			else
+				return ascii_ctype<charT>::do_toupper(c);
+		}
+
+		charT do_tolower(charT c) const anope_override
+		{
+			if (c == '[' || c == ']' || c == '\\')
+				return c + 32;
+			else
+				return ascii_ctype<charT>::do_tolower(c);
+		}
 	};
 }
 
@@ -204,26 +131,6 @@ namespace ci
 	};
 }
 
-/* Define operators for + and == with irc::string to std::string for easy assignment
- * and comparison
- *
- * Operator +
- */
-inline std::string operator+(std::string &leftval, irc::string &rightval)
-{
-	return leftval + std::string(rightval.c_str());
-}
-
-/* Define operators for + and == with irc::string to std::string for easy assignment
- * and comparison
- *
- * Operator +
- */
-inline irc::string operator+(irc::string &leftval, std::string &rightval)
-{
-	return leftval + irc::string(rightval.c_str());
-}
-
 /* Define operators for + and == with ci::string to std::string for easy assignment
  * and comparison
  *
@@ -244,46 +151,6 @@ inline ci::string operator+(ci::string &leftval, std::string &rightval)
 	return leftval + ci::string(rightval.c_str());
 }
 
-/* Define operators for + and == with irc::string to ci::string for easy assignment
- * and comparison
- *
- * Operator +
- */
-inline irc::string operator+(irc::string &leftval, ci::string &rightval)
-{
-	return leftval + irc::string(rightval.c_str());
-}
-
-/* Define operators for + and == with irc::string to ci::string for easy assignment
- * and comparison
- *
- * Operator +
- */
-inline ci::string operator+(ci::string &leftval, irc::string &rightval)
-{
-	return leftval + ci::string(rightval.c_str());
-}
-
-/* Define operators for + and == with irc::string to std::string for easy assignment
- * and comparison
- *
- * Operator ==
- */
-inline bool operator==(const std::string &leftval, const irc::string &rightval)
-{
-	return leftval.c_str() == rightval;
-}
-
-/* Define operators for + and == with irc::string to std::string for easy assignment
- * and comparison
- *
- * Operator ==
- */
-inline bool operator==(const irc::string &leftval, const std::string &rightval)
-{
-	return leftval == rightval.c_str();
-}
-
 /* Define operators for + and == with ci::string to std::string for easy assignment
  * and comparison
  *
@@ -304,40 +171,6 @@ inline bool operator==(const ci::string &leftval, const std::string &rightval)
 	return leftval == rightval.c_str();
 }
 
-/* Define operators for + and == with irc::string to ci::string for easy assignment
- * and comparison
- *
- * Operator ==
- */
-inline bool operator==(const ci::string &leftval, const irc::string &rightval)
-{
-	return leftval.c_str() == rightval;
-}
-
-/* Define operators for + and == with irc::string to ci::string for easy assignment
- * and comparison
- *
- * Operator ==
- */
-inline bool operator==(const irc::string &leftval, const ci::string &rightval)
-{
-	return leftval == rightval.c_str();
-}
-
-/* Define operators != for irc::string to std::string for easy comparison
- */
-inline bool operator!=(const irc::string &leftval, const std::string &rightval)
-{
-	return !(leftval == rightval.c_str());
-}
-
-/* Define operators != for std::string to irc::string for easy comparison
- */
-inline bool operator!=(const std::string &leftval, const irc::string &rightval)
-{
-	return !(leftval.c_str() == rightval);
-}
-
 /* Define operators != for ci::string to std::string for easy comparison
  */
 inline bool operator!=(const ci::string &leftval, const std::string &rightval)
@@ -345,25 +178,11 @@ inline bool operator!=(const ci::string &leftval, const std::string &rightval)
 	return !(leftval == rightval.c_str());
 }
 
-/* Define operators != for ci::string to irc::string for easy comparison
+/* Define operators != for std::string to ci::string for easy comparison
  */
 inline bool operator!=(const std::string &leftval, const ci::string &rightval)
 {
 	return !(leftval.c_str() == rightval);
 }
 
-/* Define operators != for irc::string to ci::string for easy comparison
- */
-inline bool operator!=(const irc::string &leftval, const ci::string &rightval)
-{
-	return !(leftval == rightval.c_str());
-}
-
-/* Define operators != for irc::string to ci::string for easy comparison
- */
-inline bool operator!=(const ci::string &leftval, const irc::string &rightval)
-{
-	return !(leftval.c_str() == rightval);
-}
-
 #endif // HASHCOMP_H