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irc: parse and return command parameters in message parser

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This commit is contained in:
Sébastien Helleu
2021-10-10 18:05:24 +02:00
parent f0898eae64
commit c4b4d80936
12 changed files with 582 additions and 64 deletions
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src/plugins/irc/irc-message.c
+146 -15
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@@ -34,6 +34,107 @@
#include "irc-tag.h"
/*
* Parses command arguments and returns:
* - params (array of strings)
* - num_params (integer)
*
* Leading spaces are skipped, trailing spaces are preserved.
*
* Trailing parameters (if starting with ":") are returned as a single
* parameter.
*
* Example:
*
* " #channel nick :trailing parameters "
*
* ==> params[0] == "#channel"
* params[1] == "nick"
* params[2] == "trailing parameters "
* params[3] == NULL
* num_params = 3
*/
void
irc_message_parse_params (const char *parameters,
char ***params, int *num_params)
{
const char *ptr_params, *pos_end, *pos_next;
int alloc_params, trailing;
if (!params && !num_params)
return;
if (params)
*params = NULL;
if (num_params)
*num_params = 0;
if (!parameters)
return;
alloc_params = 0;
if (params)
{
*params = malloc ((alloc_params + 1) * sizeof ((*params)[0]));
if (!*params)
return;
*params[0] = NULL;
}
ptr_params = parameters;
while (ptr_params[0] == ' ')
{
ptr_params++;
}
trailing = 0;
while (1)
{
pos_end = NULL;
if (ptr_params[0] == ':')
{
ptr_params++;
trailing = 1;
}
else
{
pos_end = strchr (ptr_params, ' ');
}
if (!pos_end)
pos_end = ptr_params + strlen (ptr_params);
pos_next = pos_end;
while (pos_next[0] == ' ')
{
pos_next++;
}
if (!pos_next[0])
pos_end = pos_next;
if (params)
{
alloc_params++;
*params = realloc (*params,
(alloc_params + 1) * sizeof ((*params)[0]));
if (!*params)
return;
(*params)[alloc_params - 1] = weechat_strndup (ptr_params,
pos_end - ptr_params);
(*params)[alloc_params] = NULL;
}
if (num_params)
*num_params += 1;
if (trailing)
break;
ptr_params = pos_end;
while (ptr_params[0] == ' ')
{
ptr_params++;
}
if (!ptr_params[0])
break;
}
}
/*
* Parses an IRC message and returns:
* - tags (string)
@@ -44,24 +145,26 @@
* - channel (string)
* - arguments (string)
* - text (string)
* - params (array of strings)
* - num_params (integer)
* - pos_command (integer: command index in message)
* - pos_arguments (integer: arguments index in message)
* - pos_channel (integer: channel index in message)
* - pos_text (integer: text index in message)
*
* Example:
* @time=2015-06-27T16:40:35.000Z :nick!user@host PRIVMSG #weechat :hello!
* @time=2015-06-27T16:40:35.000Z :nick!user@host PRIVMSG #weechat :Hello world!
*
* Result:
* tags: "time=2015-06-27T16:40:35.000Z"
* msg_without_tags: ":nick!user@host PRIVMSG #weechat :hello!"
* msg_without_tags: ":nick!user@host PRIVMSG #weechat :Hello world!"
* nick: "nick"
* user: "user"
* host: "nick!user@host"
* command: "PRIVMSG"
* channel: "#weechat"
* arguments: "#weechat :hello!"
* text: "hello!"
* arguments: "#weechat :Hello world!"
* text: "Hello world!"
* pos_command: 47
* pos_arguments: 55
* pos_channel: 55
@@ -73,6 +176,7 @@ irc_message_parse (struct t_irc_server *server, const char *message,
char **tags, char **message_without_tags, char **nick,
char **user, char **host, char **command, char **channel,
char **arguments, char **text,
char ***params, int *num_params,
int *pos_command, int *pos_arguments, int *pos_channel,
int *pos_text)
{
@@ -96,6 +200,10 @@ irc_message_parse (struct t_irc_server *server, const char *message,
*arguments = NULL;
if (text)
*text = NULL;
if (params)
*params = NULL;
if (num_params)
*num_params = 0;
if (pos_command)
*pos_command = -1;
if (pos_arguments)
@@ -113,7 +221,7 @@ irc_message_parse (struct t_irc_server *server, const char *message,
/*
* we will use this message as example:
*
* @time=2015-06-27T16:40:35.000Z :nick!user@host PRIVMSG #weechat :hello!
* @time=2015-06-27T16:40:35.000Z :nick!user@host PRIVMSG #weechat :Hello world!
*/
if (ptr_message[0] == '@')
@@ -142,7 +250,7 @@ irc_message_parse (struct t_irc_server *server, const char *message,
if (message_without_tags)
*message_without_tags = strdup (ptr_message);
/* now we have: ptr_message --> ":nick!user@host PRIVMSG #weechat :hello!" */
/* now we have: ptr_message --> ":nick!user@host PRIVMSG #weechat :Hello world!" */
if (ptr_message[0] == ':')
{
/* read host/nick */
@@ -185,7 +293,7 @@ irc_message_parse (struct t_irc_server *server, const char *message,
}
}
/* now we have: ptr_message --> "PRIVMSG #weechat :hello!" */
/* now we have: ptr_message --> "PRIVMSG #weechat :Hello world!" */
if (ptr_message[0])
{
pos = strchr (ptr_message, ' ');
@@ -200,11 +308,12 @@ irc_message_parse (struct t_irc_server *server, const char *message,
{
pos++;
}
/* now we have: pos --> "#weechat :hello!" */
/* now we have: pos --> "#weechat :Hello world!" */
if (arguments)
*arguments = strdup (pos);
if (pos_arguments)
*pos_arguments = pos - message;
irc_message_parse_params (pos, params, num_params);
if ((pos[0] == ':')
&& ((strncmp (ptr_message, "JOIN ", 5) == 0)
|| (strncmp (ptr_message, "PART ", 5) == 0)))
@@ -336,6 +445,8 @@ irc_message_parse (struct t_irc_server *server, const char *message,
* - channel
* - arguments
* - text
* - num_params
* - param1, param2, ..., paramN
* - pos_command
* - pos_arguments
* - pos_channel
@@ -349,13 +460,14 @@ irc_message_parse_to_hashtable (struct t_irc_server *server,
const char *message)
{
char *tags, *message_without_tags, *nick, *user, *host, *command, *channel;
char *arguments, *text, str_pos[32];
char *arguments, *text, **params, str_key[64], str_pos[32];
char empty_str[1] = { '\0' };
int pos_command, pos_arguments, pos_channel, pos_text;
int i, num_params, pos_command, pos_arguments, pos_channel, pos_text;
struct t_hashtable *hashtable;
irc_message_parse (server, message, &tags, &message_without_tags, &nick,
&user, &host, &command, &channel, &arguments, &text,
&params, &num_params,
&pos_command, &pos_arguments, &pos_channel, &pos_text);
hashtable = weechat_hashtable_new (32,
@@ -384,6 +496,13 @@ irc_message_parse_to_hashtable (struct t_irc_server *server,
(arguments) ? arguments : empty_str);
weechat_hashtable_set (hashtable, "text",
(text) ? text : empty_str);
snprintf (str_pos, sizeof (str_pos), "%d", num_params);
weechat_hashtable_set (hashtable, "num_params", str_pos);
for (i = 0; i < num_params; i++)
{
snprintf (str_key, sizeof (str_key), "param%d", i + 1);
weechat_hashtable_set (hashtable, str_key, params[i]);
}
snprintf (str_pos, sizeof (str_pos), "%d", pos_command);
weechat_hashtable_set (hashtable, "pos_command", str_pos);
snprintf (str_pos, sizeof (str_pos), "%d", pos_arguments);
@@ -562,11 +681,23 @@ irc_message_ignored (struct t_irc_server *server, const char *message)
return 0;
/* parse raw message */
irc_message_parse (server, message,
NULL, NULL, &nick, NULL, &host,
NULL, &channel, NULL,
NULL, NULL, NULL,
NULL, NULL);
irc_message_parse (server,
message,
NULL, /* tags */
NULL, /* message_without_tags */
&nick,
NULL, /* user */
&host,
NULL, /* command */
&channel,
NULL, /* arguments */
NULL, /* text */
NULL, /* params */
NULL, /* num_params */
NULL, /* pos_command */
NULL, /* pos_arguments */
NULL, /* pos_channel */
NULL); /* pos_text */
/* remove colors from host */
host_no_color = (host) ? irc_color_decode (host, 0) : NULL;