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psyced/world/net/lastlog.c

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2009-01-26 20:12:53 +00:00
// $Id: lastlog.c,v 1.29 2008/07/17 17:09:15 lynx Exp $ // vim:syntax=lpc
//
// generic implementation of a log of last messages,
// also known as lastlog in irc tradition
// stores log in a non-static variable ready for save_object
// used by user.c for /log and storic.c for /history in rooms
// memory allocation could be improved in a similar way to net/queue.c
2009-01-26 20:12:53 +00:00
// local debug messages - turn them on by using psyclpc -DDlastlog=<level>
#ifdef Dlastlog
# undef DEBUG
# define DEBUG Dlastlog
#endif
#include <net.h>
#include <lastlog.h>
protected array(mixed) _log;
msgView(source, mc, data, vars, showingLog) {
return msg(source, mc, data, vars, showingLog);
}
logAppend(source, mc, data, vars, maxlen, timevar, isAJob) {
P4(("logAppend(%O, %O, %O, %O..) in %O\n", source, mc, data, vars, ME))
// bug in emit(.., source) somewhere.. when displaying log the sources
// are not advertised ahead. don't know where to fix it, so for now i
// just turn off the lastlog feature in ircgate mode.
#ifndef ADVERTISE_PSYCERS
//
unless(timevar) timevar = "_time_INTERNAL";
if (maxlen && sizeof(_log) > maxlen * 4)
_log = _log[ (maxlen/2) * 4 ..];
// if (mappingp(vars)) vars = vars + ([ timevar : time() ]);
if (mappingp(vars)) vars[timevar] = time();
else vars = ([ timevar : time() ]);
# ifndef UNSAFE_LASTLOG
// NEW: appending an array with 2 elements (source, psyc_name of it)
// if source is an object, so we can gracefully deliver their room
// history entries to remote psycers even if the object is long gone.
_log += ({ (objectp(source) ? ({ source, psyc_name(source) }) : source),
mc, data, vars });
# else /* UNSAFE_LASTLOG */
_log += ({ source, mc, data, vars });
# endif /* UNSAFE_LASTLOG */
#endif /* RELAY */
}
logClear(a) {
int amount;
if (stringp(a)) {
// invitation for a grep-clear .. but hey who wants that
unless (sscanf(a, "%d", amount)) amount = 0;
} else amount = a;
amount *= 4;
if (amount <= 0 || amount > sizeof(_log)) _log = ({ });
else _log = _log[0 .. sizeof(_log)-amount-1];
}
logInit(takeThis) {
if (pointerp(takeThis)) _log = takeThis;
else if (!_log || sizeof(_log)%4 ) _log = ({ });
// D(S("\n%O :logInit: %O\n", ME, _log));
}
logClip(maxlen, cutlen) {
P3(("logClip(%O, %O)\n", maxlen, cutlen))
int howmany;
howmany = sizeof(_log);
if (maxlen && howmany > maxlen * 4) {
unless (cutlen) cutlen = maxlen;
_log = _log[howmany-cutlen * 4 ..];
return cutlen;
}
return howmany / 4;
}
// TODO: logView *since* timestamp. see also user.c:disconnected()
//
// uh. vim lpc syntax file doesn't like default in variablenames. renamed.
logView(a, showingLog, defAmount, offset) {
string grep;
int i, ll;
if (stringp(a)) {
unless (sscanf(a, "%d", ll)) grep = a;
} else ll = a;
// paranoid but.. you never know what happens to a .o file
#if DEBUG > 1
if (sizeof(_log) % 4) {
D("Log corrupted in "+to_string(ME)+"!\n");
_log = ({ });
return;
}
#endif
// <lynX> there were requests for smarter matching using regexps..
// i think we should enlarge the _request_do_log variable set
// by specifying which variables ought to be searched rather
// than trying an odd choice like below. the command variant
// in that case would probably be of the unix option syntax
// kind (we could use a getopt-implementation then). and most
// of all we need a timestamp-based replay function which
// finds the starting position in the log by a binary search
if (grep) {
string text, t;
mapping m;
ll = 0; for(i=0; i<sizeof(_log); i+=4) {
unless (_log[i]) continue;
if (mappingp(m = _log[i+3])) if (
((text = _log[i+2]) && strstr(text, grep) >= 0)
|| ((t = m["_nick"]) && strstr(t, grep) >= 0)
|| ((t = m["_nick_target"]) && strstr(t, grep) >= 0)
|| ((t = m["_action"]) && strstr(t, grep) >= 0)
) {
#ifndef UNSAFE_LASTLOG
msgView((pointerp(_log[i])
? _log[i][0] || _log[i][1]
: _log[i]),
#else /* UNSAFE_LASTLOG */
# if UNSAFE_LASTLOG == "again"
// in case we have to switch back ..
msgView((pointerp(_log[i]) ? 0 : _log[i]),
# else
msgView(_log[i],
# endif
#endif /* UNSAFE_LASTLOG */
_log[i+1],
text,
_log[i+3], showingLog);
ll++;
}
}
return ll;
}
P4(("\n%O :logView: %O\n", ME, _log))
unless (ll) ll = defAmount || 15;
ll *= 4;
/* FIXME: here's where the _offset parameter needs to be considered
* but let's see if ryuka is serious about wanting to use this ;)
*/
if (sizeof(_log) < ll) {
ll = sizeof(_log);
i = 0;
} else {
i = sizeof(_log) - ll;
}
while (i < sizeof(_log)) {
unless (_log[i]) { i+= 4; continue; }
#ifndef UNSAFE_LASTLOG
msgView((pointerp(_log[i])
? _log[i++][0] || _log[i-1][1]
: _log[i++]),
#else /* UNSAFE_LASTLOG */
msgView(_log[i++],
#endif /* UNSAFE_LASTLOG */
_log[i++],
_log[i++],
_log[i++], showingLog);
}
return ll / 4;
}
int logExists(int i) {
i *= 4;
if (i < 0 || i >= sizeof(_log) || !_log[i]) return 0;
return 1;
}
// pick a single message. used by POP3 & place/threads
array(mixed) logPick(int i) {
unless (logExists(i)) return 0;
i *= 4;
#ifndef UNSAFE_LASTLOG
return ({ (pointerp(_log[i])
? _log[i++][0] || _log[i-1][1]
: _log[i++]),
_log[i++], _log[i++], _log[i++] });
#else /* UNSAFE_LASTLOG */
return ({ _log[i++], _log[i++], _log[i++], _log[i++] });
#endif /* UNSAFE_LASTLOG */
}
varargs public int logSize(string mc) {
unless (mc) return sizeof(_log) / 4;
int i, n = 0;
for (i = 0; i < sizeof(_log); i += 4)
if (_log[i] && abbrev(mc, _log[i])) n++;
return n;
}
int logSet(int i, array(mixed) item) {
if (i < 0 || i > logSize()) return 0;
if (i == logSize()) {
_log += item;
} else {
i *= 4;
_log[i..i+3] = item[0..3];
}
return 1;
}
// used to make a temporary copy of the log, in POP3
public logQuery() { return _log; }