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Implement case-insensitive versions of std::string, irc::string for RFC-style case-insensitivity and ci::string for ASCII-style case-insensitivity, code from InspIRCd. Not yet used, but adding it in to use with the help system initially.
git-svn-id: http://anope.svn.sourceforge.net/svnroot/anope/trunk@2390 5417fbe8-f217-4b02-8779-1006273d7864
This commit is contained in:
cyberbotx
@@ -16,6 +16,391 @@
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#include <string>
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/*******************************************************
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* This file contains classes and templates that deal
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* with the comparison and hashing of 'irc strings'.
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* An 'irc string' is a string which compares in a
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* case insensitive manner, and as per RFC 1459 will
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* treat [ identical to {, ] identical to }, and \
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* as identical to |.
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*
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* Our hashing functions are designed to accept
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* std::string and compare/hash them as type irc::string
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* by converting them internally. This makes them
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* backwards compatible with other code which is not
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* aware of irc::string.
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*******************************************************/
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#ifndef LOWERMAP
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#define LOWERMAP
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/** A mapping of uppercase to lowercase, including scandinavian
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* 'oddities' as specified by RFC1459, e.g. { -> [, and | -> \
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*/
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unsigned const char rfc_case_insensitive_map[256] = {
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, /* 0-19 */
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20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, /* 20-39 */
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40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, /* 40-59 */
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60, 61, 62, 63, 64, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, /* 60-79 */
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112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 94, 95, 96, 97, 98, 99, /* 80-99 */
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100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, /* 100-119 */
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120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, /* 120-139 */
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140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, /* 140-159 */
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160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, /* 160-179 */
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180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, /* 180-199 */
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200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, /* 200-219 */
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220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, /* 220-239 */
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240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255 /* 240-255 */
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};
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/** Case insensitive map, ASCII rules.
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* That is;
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* [ != {, but A == a.
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*/
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unsigned const char ascii_case_insensitive_map[256] = {
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, /* 0-19 */
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20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, /* 20-39 */
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40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, /* 40-59 */
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60, 61, 62, 63, 64, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, /* 60-79 */
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112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 91, 92, 93, 94, 95, 96, 97, 98, 99, /* 80-99 */
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100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, /* 100-119 */
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120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, /* 120-139 */
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140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, /* 140-159 */
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160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, /* 160-179 */
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180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, /* 180-199 */
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200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, /* 200-219 */
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220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, /* 220-239 */
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240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255 /* 240-255 */
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};
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#endif
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/** The irc namespace contains a number of helper classes.
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*/
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namespace irc
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{
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/** The irc_char_traits class is used for RFC-style comparison of strings.
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* This class is used to implement irc::string, a case-insensitive, RFC-
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* comparing string class.
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*/
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struct irc_char_traits : std::char_traits<char>
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{
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/** Check if two chars match.
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* @param c1st First character
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* @param c2nd Second character
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* @return true if the characters are equal
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*/
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static bool eq(char c1st, char c2nd);
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/** Check if two chars do NOT match.
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* @param c1st First character
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* @param c2nd Second character
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* @return true if the characters are unequal
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*/
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static bool ne(char c1st, char c2nd);
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/** Check if one char is less than another.
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* @param c1st First character
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* @param c2nd Second character
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* @return true if c1st is less than c2nd
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*/
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static bool lt(char c1st, char c2nd);
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/** Compare two strings of size n.
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* @param str1 First string
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* @param str2 Second string
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* @param n Length to compare to
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* @return similar to strcmp, zero for equal, less than zero for str1
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* being less and greater than zero for str1 being greater than str2.
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*/
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static CoreExport int compare(const char *str1, const char *str2, size_t n);
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/** Find a char within a string up to position n.
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* @param s1 String to find in
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* @param n Position to search up to
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* @param c Character to search for
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* @return Pointer to the first occurance of c in s1
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*/
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static CoreExport const char *find(const char *s1, int n, char c);
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};
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/** This typedef declares irc::string based upon irc_char_traits.
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*/
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typedef std::basic_string<char, irc_char_traits, std::allocator<char> > string;
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}
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/** The ci namespace contains a number of helper classes.
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*/
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namespace ci
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{
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/** The ci_char_traits class is used for ASCII-style comparison of strings.
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* This class is used to implement ci::string, a case-insensitive, ASCII-
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* comparing string class.
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*/
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struct ci_char_traits : std::char_traits<char>
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{
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/** Check if two chars match.
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* @param c1st First character
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* @param c2nd Second character
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* @return true if the characters are equal
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*/
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static bool eq(char c1st, char c2nd);
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/** Check if two chars do NOT match.
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* @param c1st First character
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* @param c2nd Second character
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* @return true if the characters are unequal
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*/
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static bool ne(char c1st, char c2nd);
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/** Check if one char is less than another.
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* @param c1st First character
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* @param c2nd Second character
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* @return true if c1st is less than c2nd
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*/
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static bool lt(char c1st, char c2nd);
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/** Compare two strings of size n.
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* @param str1 First string
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* @param str2 Second string
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* @param n Length to compare to
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* @return similar to strcmp, zero for equal, less than zero for str1
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* being less and greater than zero for str1 being greater than str2.
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*/
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static CoreExport int compare(const char *str1, const char *str2, size_t n);
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/** Find a char within a string up to position n.
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* @param s1 String to find in
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* @param n Position to search up to
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* @param c Character to search for
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* @return Pointer to the first occurance of c in s1
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*/
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static CoreExport const char *find(const char *s1, int n, char c);
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};
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/** This typedef declares ci::string based upon ci_char_traits.
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*/
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typedef std::basic_string<char, ci_char_traits, std::allocator<char> > string;
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}
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/* Define operators for using >> and << with irc::string to an ostream on an istream. */
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/* This was endless fun. No. Really. */
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/* It was also the first core change Ommeh made, if anyone cares */
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/** Operator << for irc::string
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*/
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inline std::ostream &operator<<(std::ostream &os, const irc::string &str) { return os << str.c_str(); }
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/** Operator >> for irc::string
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*/
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inline std::istream &operator>>(std::istream &is, irc::string &str)
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{
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std::string tmp;
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is >> tmp;
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str = tmp.c_str();
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return is;
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}
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/** Operator << for ci::string
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*/
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inline std::ostream &operator<<(std::ostream &os, const ci::string &str) { return os << str.c_str(); }
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/** Operator >> for ci::string
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*/
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inline std::istream &operator>>(std::istream &is, ci::string &str)
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{
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std::string tmp;
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is >> tmp;
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str = tmp.c_str();
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return is;
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}
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/* Define operators for + and == with irc::string to std::string for easy assignment
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* and comparison
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*
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* Operator +
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*/
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inline std::string operator+(std::string &leftval, irc::string &rightval)
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{
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return leftval + std::string(rightval.c_str());
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}
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/* Define operators for + and == with irc::string to std::string for easy assignment
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* and comparison
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*
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* Operator +
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*/
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inline irc::string operator+(irc::string &leftval, std::string &rightval)
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{
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return leftval + irc::string(rightval.c_str());
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}
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/* Define operators for + and == with ci::string to std::string for easy assignment
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* and comparison
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*
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* Operator +
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*/
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inline std::string operator+(std::string &leftval, ci::string &rightval)
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{
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return leftval + std::string(rightval.c_str());
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}
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/* Define operators for + and == with ci::string to std::string for easy assignment
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* and comparison
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*
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* Operator +
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*/
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inline ci::string operator+(ci::string &leftval, std::string &rightval)
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{
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return leftval + ci::string(rightval.c_str());
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}
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/* Define operators for + and == with irc::string to ci::string for easy assignment
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* and comparison
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*
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* Operator +
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*/
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inline irc::string operator+(irc::string &leftval, ci::string &rightval)
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{
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return leftval + irc::string(rightval.c_str());
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}
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/* Define operators for + and == with irc::string to ci::string for easy assignment
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* and comparison
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*
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* Operator +
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*/
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inline ci::string operator+(ci::string &leftval, irc::string &rightval)
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{
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return leftval + ci::string(rightval.c_str());
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}
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/* Define operators for + and == with irc::string to std::string for easy assignment
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* and comparison
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*
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* Operator ==
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*/
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inline bool operator==(const std::string &leftval, const irc::string &rightval)
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{
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return leftval.c_str() == rightval;
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}
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/* Define operators for + and == with irc::string to std::string for easy assignment
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* and comparison
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*
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* Operator ==
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*/
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inline bool operator==(const irc::string &leftval, const std::string &rightval)
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{
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return leftval == rightval.c_str();
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}
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/* Define operators for + and == with ci::string to std::string for easy assignment
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* and comparison
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*
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* Operator ==
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*/
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inline bool operator==(const std::string &leftval, const ci::string &rightval)
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{
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return leftval.c_str() == rightval;
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}
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/* Define operators for + and == with ci::string to std::string for easy assignment
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* and comparison
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*
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* Operator ==
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*/
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inline bool operator==(const ci::string &leftval, const std::string &rightval)
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{
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return leftval == rightval.c_str();
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}
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/* Define operators for + and == with irc::string to ci::string for easy assignment
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* and comparison
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*
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* Operator ==
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*/
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inline bool operator==(const ci::string &leftval, const irc::string &rightval)
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{
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return leftval.c_str() == rightval;
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}
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/* Define operators for + and == with irc::string to ci::string for easy assignment
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* and comparison
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*
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* Operator ==
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*/
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inline bool operator==(const irc::string &leftval, const ci::string &rightval)
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{
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return leftval == rightval.c_str();
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}
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/* Define operators != for irc::string to std::string for easy comparison
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*/
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inline bool operator!=(const irc::string &leftval, const std::string &rightval)
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{
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return !(leftval == rightval.c_str());
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}
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/* Define operators != for std::string to irc::string for easy comparison
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*/
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inline bool operator!=(const std::string &leftval, const irc::string &rightval)
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{
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return !(leftval.c_str() == rightval);
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}
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/* Define operators != for ci::string to std::string for easy comparison
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*/
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inline bool operator!=(const ci::string &leftval, const std::string &rightval)
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{
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return !(leftval == rightval.c_str());
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}
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/* Define operators != for ci::string to irc::string for easy comparison
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*/
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inline bool operator!=(const std::string &leftval, const ci::string &rightval)
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{
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return !(leftval.c_str() == rightval);
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}
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/* Define operators != for irc::string to ci::string for easy comparison
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*/
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inline bool operator!=(const irc::string &leftval, const ci::string &rightval)
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{
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return !(leftval == rightval.c_str());
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}
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/* Define operators != for irc::string to ci::string for easy comparison
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*/
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inline bool operator!=(const ci::string &leftval, const irc::string &rightval)
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{
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return !(leftval.c_str() == rightval);
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}
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/** Assign an irc::string to a std::string.
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*/
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//inline std::string assign(const irc::string &other) { return other.c_str(); }
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/** Assign a std::string to an irc::string.
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*/
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//inline irc::string assign(const std::string &other) { return other.c_str(); }
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/** Assign an ci::string to a std::string.
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*/
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//inline std::string assign(const ci::string &other) { return other.c_str(); }
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/** Assign a std::string to an ci::string.
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*/
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//inline ci::string assign(const std::string &other) { return other.c_str(); }
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/** Assign an irc::string to a ci::string.
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*/
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//inline ci::string assign(const irc::string &other) { return other.c_str(); }
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/** Assign a ci::string to an irc::string.
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*/
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//inline irc::string assign(const ci::string &other) { return other.c_str(); }
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/** sepstream allows for splitting token seperated lists.
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* Each successive call to sepstream::GetToken() returns
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* the next token, until none remain, at which point the method returns
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@@ -14,6 +14,99 @@
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#include "services.h"
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#include "hashcomp.h"
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/******************************************************
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*
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* This is the implementation of our special irc::string
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* class which is a case-insensitive equivalent to
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* std::string which is not only case-insensitive but
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* can also do scandanavian comparisons, e.g. { = [, etc.
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*
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* This class depends on the const array 'national_case_insensitive_map'.
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*
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******************************************************/
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bool irc::irc_char_traits::eq(char c1st, char c2nd)
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{
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return rfc_case_insensitive_map[static_cast<unsigned char>(c1st)] == rfc_case_insensitive_map[static_cast<unsigned char>(c2nd)];
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}
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bool irc::irc_char_traits::ne(char c1st, char c2nd)
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{
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return rfc_case_insensitive_map[static_cast<unsigned char>(c1st)] != rfc_case_insensitive_map[static_cast<unsigned char>(c2nd)];
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}
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bool irc::irc_char_traits::lt(char c1st, char c2nd)
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{
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return rfc_case_insensitive_map[static_cast<unsigned char>(c1st)] < rfc_case_insensitive_map[static_cast<unsigned char>(c2nd)];
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}
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int irc::irc_char_traits::compare(const char *str1, const char *str2, size_t n)
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{
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for (unsigned i = 0; i < n; ++i)
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{
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if (rfc_case_insensitive_map[static_cast<unsigned char>(*str1)] > rfc_case_insensitive_map[static_cast<unsigned char>(*str2)])
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return 1;
|
||||
|
||||
if (rfc_case_insensitive_map[static_cast<unsigned char>(*str1)] < rfc_case_insensitive_map[static_cast<unsigned char>(*str2)])
|
||||
return -1;
|
||||
|
||||
if (!*str1 || !*str2)
|
||||
return 0;
|
||||
|
||||
++str1;
|
||||
++str2;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
const char *irc::irc_char_traits::find(const char *s1, int n, char c)
|
||||
{
|
||||
while (n-- > 0 && rfc_case_insensitive_map[static_cast<unsigned char>(*s1)] != rfc_case_insensitive_map[static_cast<unsigned char>(c)])
|
||||
++s1;
|
||||
return n >= 0 ? s1 : NULL;
|
||||
}
|
||||
|
||||
bool ci::ci_char_traits::eq(char c1st, char c2nd)
|
||||
{
|
||||
return ascii_case_insensitive_map[static_cast<unsigned char>(c1st)] == ascii_case_insensitive_map[static_cast<unsigned char>(c2nd)];
|
||||
}
|
||||
|
||||
bool ci::ci_char_traits::ne(char c1st, char c2nd)
|
||||
{
|
||||
return ascii_case_insensitive_map[static_cast<unsigned char>(c1st)] != ascii_case_insensitive_map[static_cast<unsigned char>(c2nd)];
|
||||
}
|
||||
|
||||
bool ci::ci_char_traits::lt(char c1st, char c2nd)
|
||||
{
|
||||
return ascii_case_insensitive_map[static_cast<unsigned char>(c1st)] < ascii_case_insensitive_map[static_cast<unsigned char>(c2nd)];
|
||||
}
|
||||
|
||||
int ci::ci_char_traits::compare(const char *str1, const char *str2, size_t n)
|
||||
{
|
||||
for (unsigned i = 0; i < n; ++i)
|
||||
{
|
||||
if (ascii_case_insensitive_map[static_cast<unsigned char>(*str1)] > ascii_case_insensitive_map[static_cast<unsigned char>(*str2)])
|
||||
return 1;
|
||||
|
||||
if (ascii_case_insensitive_map[static_cast<unsigned char>(*str1)] < ascii_case_insensitive_map[static_cast<unsigned char>(*str2)])
|
||||
return -1;
|
||||
|
||||
if (!*str1 || !*str2)
|
||||
return 0;
|
||||
|
||||
++str1;
|
||||
++str2;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
const char *ci::ci_char_traits::find(const char *s1, int n, char c)
|
||||
{
|
||||
while (n-- > 0 && ascii_case_insensitive_map[static_cast<unsigned char>(*s1)] != ascii_case_insensitive_map[static_cast<unsigned char>(c)])
|
||||
++s1;
|
||||
return n >= 0 ? s1 : NULL;
|
||||
}
|
||||
|
||||
sepstream::sepstream(const std::string &source, char seperator) : tokens(source), sep(seperator)
|
||||
{
|
||||
last_starting_position = n = tokens.begin();
|
||||
|
||||
Reference in New Issue
Block a user