mirror of
https://github.com/moparisthebest/hexchat
synced 2024-10-31 15:35:03 -04:00
113 lines
3.1 KiB
C
113 lines
3.1 KiB
C
/*
|
|
|
|
Copyright (c) 2010 Samuel Lidén Borell <samuel@kodafritt.se>
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated documentation files (the "Software"), to deal
|
|
in the Software without restriction, including without limitation the rights
|
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
copies of the Software, and to permit persons to whom the Software is
|
|
furnished to do so, subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included in
|
|
all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
THE SOFTWARE.
|
|
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "irc.h"
|
|
|
|
/**
|
|
* Parses an IRC message. The words array should contain the message splitted
|
|
* at spaces. The prefix and command is extracted from the message, and
|
|
* parameters_offset is set to the index of the first parameter.
|
|
*/
|
|
bool irc_parse_message(const char *words[],
|
|
const char **prefix, const char **command,
|
|
size_t *parameters_offset) {
|
|
size_t w = 1;
|
|
if (prefix) *prefix = NULL;
|
|
if (command) *command = NULL;
|
|
|
|
// See if the message starts with a prefix (sender user)
|
|
if (words[w][0] == ':') {
|
|
if (prefix) *prefix = &words[w][1];
|
|
w++;
|
|
}
|
|
|
|
// Check command
|
|
if (words[w][0] == '\0') return false;
|
|
if (command) *command = words[w];
|
|
w++;
|
|
|
|
*parameters_offset = w;
|
|
return true;
|
|
}
|
|
|
|
|
|
/**
|
|
* Finds the nick part of a "IRC prefix", which can have any
|
|
* of the following forms:
|
|
*
|
|
* nick
|
|
* nick@host
|
|
* nick!ident
|
|
* nick!ident@host
|
|
*/
|
|
char *irc_prefix_get_nick(const char *prefix) {
|
|
const char *end;
|
|
char *nick;
|
|
size_t length;
|
|
|
|
if (!prefix) return NULL;
|
|
|
|
// Find end of nick
|
|
end = prefix;
|
|
while (*end != '\0' && *end != '!' && *end != '@') end++;
|
|
|
|
// Allocate string
|
|
length = end - prefix;
|
|
nick = malloc(length+1);
|
|
if (!nick) return NULL;
|
|
|
|
// Copy to string
|
|
memcpy(nick, prefix, length);
|
|
nick[length] = '\0';
|
|
return nick;
|
|
}
|
|
|
|
|
|
/**
|
|
* Compares two nick names. Return 0 if equal. Otherwise the return value is
|
|
* less than zero if a is less than b or greater than zero if a is greater
|
|
* than b.
|
|
*/
|
|
int irc_nick_cmp(const char *a, const char *b) {
|
|
char ac;
|
|
char bc;
|
|
char diff;
|
|
for (;;) {
|
|
ac = *(a++);
|
|
bc = *(b++);
|
|
|
|
// Change into IRC uppercase (see RFC 2812 section 2.2)
|
|
if (ac >= 'a' && ac <= '~') ac &= ~0x20;
|
|
if (bc >= 'a' && bc <= '~') bc &= ~0x20;
|
|
|
|
diff = ac - bc;
|
|
if (diff) return diff;
|
|
if (!ac) return 0;
|
|
}
|
|
}
|
|
|
|
|