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psyced/world/net/psyc/edit.i
psyc://psyced.org/~lynX 94530cc322 things that happened in 2008
2009-01-26 21:12:53 +01:00

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// vim:foldmethod=marker:syntax=lpc:noexpandtab
// $Id: edit.i,v 1.111 2008/12/01 11:31:33 lynx Exp $
//
// headermaker functions. we should call it render rather than edit.
volatile mapping isRouting = shared_memory("routing");
#ifdef FORK
// these macros support state modifiers in varnames.. we'll need that later
#define isRoutingVar(x) (stringp(x) && strlen(x) > 1 && member(isRouting, (x[0] == '_') ? x : x[1..]))
#define mergeRoutingVar(x) (stringp(x) && strlen(x) > 1 && (isRouting[(x[0] == '_') ? x : x[1..]] & PSYC_ROUTING_MERGE)
#endif
volatile string rbuf, ebuf; // pike has no pass-by-reference
static int build_header(string key, mixed val, mapping vars) {
string s, klopp;
int routeMe = 0;
#ifdef SPYC
int needLen = 0;
#endif
unless (stringp(key)) {
s = sprintf("%O encountered key %O value %O (rbuf %O ebuf %O)\n",
ME, key, val, rbuf, ebuf);
log_file("PANIC", s);
monitor_report("_failure_invalid_variable_name", s);
return -9;
}
#ifndef FORK
routeMe = isRouting[key];
# if 1 //def EXPERIMENTAL
P3(("isRouting[%O] = %O, render? %O\n",
key, routeMe, routeMe & PSYC_ROUTING_RENDER))
if ((routeMe &&! (routeMe & PSYC_ROUTING_RENDER))
|| abbrev("_INTERNAL", key)) return -1;
# else
if (routeMe || abbrev("_INTERNAL", key)) return -1;
# endif
#endif /* ! FORK */
P2(("build_header(%O, %O) into %s vars\n", key, val,
routeMe ? "routing" : "entity"))
if (key[0] == '_') key = ":"+key;
if (objectp(val)) klopp = psyc_name(val);
else if (stringp(val)) {
if (key == "_nick" && (s = vars["_INTERNAL_nick_plain"])) {
P1(("%O sending %O instead of %O\n", ME, s, val))
klopp = s;
} else {
// yeah but we haven't implement the other stuff yet
// and the parser can handle it
#if 0 //def EXPERIMENTAL
// according to http://about.psyc.eu/Grammar
if (index(val, '\n') >=0)
raise_error("Multiline variables no longer permitted.\n");
#else
// indenting of multiline variables ...
// hardly ever happens, that's why indexing first is
// more efficient
# ifdef SPYC
// better even to not look into the variable but we
// need to implement types for that, first
if (index(val, '\n') >=0) {
needLen = 1;
}
klopp = val;
# else
if (index(val, '\n') >=0)
klopp = replace(val, "\n", "\n\t");
else
klopp = val;
# endif
#endif
}
} else if (intp(val)) {
klopp = to_string(val);
} else {
mixed k,d, sep;
// using list syntax here without testing for
// _list in name.. bad?
// fippo likes this variant, but it gives + a wrong
// meaning (non-persistent!)
// also psyc/parse cannot parse this, and shouldnt start
//
#ifndef SPYC
//sep = key[0] == '_' ? "\n+\t" : "\n"+key[0..]+"\t";
sep = "\n"+key[0..0]+"\t";
//P2(("sep %O, key[0] %O\n", sep, key[0]))
#else
needLen = 1; // is it always necessary?
// no, but it does not hurt much either
#endif
if (pointerp(val)) {
klopp = "";
each(d, val) {
#ifndef SPYC
// good-old "simple" http://about.psyc.eu/List syntax
klopp += sep + UNIFORM(d);
#else
k = objectp(d)? psyc_name(d): to_string(d);
klopp += strlen(k) +" "+ k + "|";
#endif
}
#ifdef SPYC
klopp = klopp[..<2];
#endif
}
else if (mappingp(val)) {
#if 1
raise_error("Mappings currently not transmittable.\n");
#else
klopp = "";
mapeach(k, d, val) {
// inofficial table syntax
klopp += sep + UNIFORM(k);
if (d) klopp += " " + UNIFORM(d);
}
#endif
}
// it could lead to problems if vars is reused since val may
// be an array .. pointer ... so we put stuff in klopp instead
#ifndef SPYC
klopp = strlen(klopp) > 3 ? klopp[3..] : "";
// if (sizeof(val) && stringp(val[0])) val = implode(val, " , ");
// else return;
#endif
}
#ifndef SPYC
if (klopp) klopp = "\n"+ key +"\t"+ klopp;
else klopp = "\n"+ key;
#else
if (klopp) klopp = "\n"+ key +
(needLen? (" "+strlen(klopp)+"\t") : "\t") + klopp;
else klopp = "\n"+ key +"\t"; // with or without TAB here?
#endif
#if 1 //def EXPERIMENTAL
if (routeMe) rbuf += klopp;
else ebuf += klopp;
#else
ebuf += klopp;
#endif
P4(("build_header (%O, %O) rbuf %O\n", key, val, rbuf))
return 0;
}
static varargs string psyc_render(mixed source, string mc, mixed data,
mapping vars, int showingLog, vastring target) {
// vaobject obj, vastring target, vaint hascontext)
P4(("%O psyc_render %O for %O\n", ME, vars, previous_object()))
string t, context;
int needLen = 0;
#ifndef NEW_LINE
int excessiveNewline = 0;
#endif
rbuf = ebuf = "";
#ifdef NEW_RENDER
ASSERT("mc", mc, "Message from "+ to_string(source) +" w/out mc")
if (!stringp(data)) {
#ifdef T // what lynX wants to say here: do we have the textdb
if (abbrev("_message", mc)) data = "";
else {
data = T(mc, "") || "";
P3(("edit: fmt from textdb for %O: %O\n", mc, data))
if (strlen(data) && char_from_end(data, 1) == '\n')
excessiveNewline = 1;
}
#else
PT(("non-string data: %O\n", data))
data = data? to_string(data): "";
#endif
}
else if (data == S_GLYPH_PACKET_DELIMITER ||
(data[0] == C_GLYPH_PACKET_DELIMITER && data[1] == '\n')
|| strstr(data, "\n" S_GLYPH_PACKET_DELIMITER "\n") != -1) {
// this check shouldn't be necessary here: we should check what
// people are typing in usercmd
# ifdef SPYC
needLen++;
# else
P1(("%O: %O tried to send %O via psyc. censored.\n",
previous_object() || ME, vars["_nick"] || vars, data))
data = "*** censored message ***";
return 0;
# endif
# ifndef NEW_LINE
} else
# ifdef SPYC
if (!needLen)
# endif
{
//# echo net/psyc Warning: Using inaccurate newline guessing strategy.
// textdb still provides formats with extra trailing newline.
// catching this at this point is kind of wrong. it doesn't
// take into consideration data that intentionally ends with
// a newline. This is a minor inconvenience, but still.. FIXME
//
P4(("Newline guessing for %O (%O) %O\n", data,
char_from_end(data, 1), '\n'))
if (strlen(data) && char_from_end(data, 1) == '\n')
excessiveNewline = 1;
# endif
}
# if 1
if (context = vars["_INTERNAL_context"]) {
P4(("retransmit: %O - deleting source\n", data))
# ifdef ALPHA
if (source != context && !vars["_source_relay"])
vars["_source_relay"] = source;
# else
unless(vars["_source_relay"])
vars["_source_relay"] = source;
# endif
// public lastlog and history are sent with _context and _target
source = 0;
}
else if (context = vars["_context"]) {
P4(("1st transmit: %O - deleting source and target\n", data))
// we're not multipeering, so no sources here.
# ifdef ALPHA
if (source != context && !vars["_source_relay"])
vars["_source_relay"] = source;
# else
unless(vars["_source_relay"])
vars["_source_relay"] = source;
# endif
source = 0;
// if (vars["_INTERNAL_context"]) context = 0; // EXPERIMENTAL
// else {
// at least we get to see when he does that
// vars["_INTERNAL_target"] = target;
// oh he does it a lot currently
P2(("psycrender removing _target %O for %O in %O\n",
target, context, ME))
// history in fact is a state sync so it
// should be sent with _context AND _target TODO
target = 0;
// }
}
# else
context = vars["_context"];
# endif
# ifndef PRE_SPEC
if (context) {
rbuf += "\n:_context\t"+ UNIFORM(context);
t = source || vars["_source_relay"];
if (t) rbuf += "\n:_source_relay\t"+ UNIFORM(t);
// resend of /history transmitted according to spec:
if (showingLog && target) rbuf += "\n:_target\t"+ target;
// usually the same as context or a different channel of
// context or the actual recipient of a multicast
// ... not interesting in any case
//else if (target) rbuf += "\n:_target_relay\t"+ target;
} else {
if (source) rbuf += "\n:_source\t"+ UNIFORM(source);
if (target) rbuf += "\n:_target\t"+ target;
// this is necessary for message forwarding ( /set id )
if (t = vars["_source_relay"])
rbuf += "\n:_source_relay\t"+ UNIFORM(t);
}
# else
if (source) rbuf += "\n:_source\t"+ UNIFORM(source);
if (target) rbuf += "\n:_target\t"+ target;
if (context) rbuf+= "\n:_context\t"+ UNIFORM(context);
if (t = vars["_source_relay"])
rbuf += "\n:_source_relay\t"+ UNIFORM(t);
# endif /* PRE_SPEC */
#endif /* NEW_RENDER */
if (mappingp(vars)) {
#if 0 //ndef EXPERIMENTAL
if (member(vars, "_count"))
ebuf += "\n:_count\t" + vars["_count"];
#endif
#if __EFUN_DEFINED__(walk_mapping)
#ifndef FORK // NO STATE
// walk_mapping could be rewritten into foreach, but thats work
walk_mapping(vars, #'build_header, vars);
#else /* FORK {{{ */
# if 0 //ndef EXPERIMENTAL
// At least the psyced needs _count first to handle that properly
m_delete(vars, "_count");
# endif
foreach (string key, mixed value : vars) {
// why does FORK weed out _INTERNAL in two places? ah nevermind
if (abbrev("_INTERNAL_", key)) {
// equal on a line by itself to mean "clear all state"
if (key == "_INTERNAL_state_clear")
ebuf = "\n="+ ebuf;
continue;
}
// CONTEXT_STATE and ENTITY_STATE here
if (!isRoutingVar(key) && (!objectp(obj)
|| obj->outstate(target, key, value, hascontext)))
build_header(key, value);
}
if (objectp(obj))
walk_mapping(obj->state(target, hascontext), #'build_header);
#endif /* FORK }}} */
#else // PIKE, MudOS...
mixed key, val;
mapeach(key, val, vars) {
build_header(key, val, vars);
}
#endif
}
if (data == "") ebuf += "\n"+ mc;
else ebuf += "\n"+ mc + "\n"+ data;
#ifdef SPYC // || MODULE_LENGTH
if (needLen || strlen(ebuf) + strlen(rbuf) > 555)
return ":_length\t"+ strlen(ebuf) + rbuf +"\n"+
ebuf +"\n" S_GLYPH_PACKET_DELIMITER "\n";
else
#endif
#ifndef NEW_LINE
if (excessiveNewline) return rbuf[1 ..] +"\n"+
ebuf + S_GLYPH_PACKET_DELIMITER "\n";
else
#endif
if (strlen(rbuf)) return rbuf[1 ..] +"\n"+
ebuf +"\n" S_GLYPH_PACKET_DELIMITER "\n";
return ebuf +"\n" S_GLYPH_PACKET_DELIMITER "\n";
}
#ifdef FORK // {{{
static varargs string mmp_make_header(mapping vars, object o) {
buf = "";
foreach (string key, mixed value : vars) {
if (abbrev("_INTERNAL_", key)) continue;
if (isRoutingVar(key) && (!objectp(o) || o->outstate(key, value)))
build_header(key, value);
}
if (objectp(o))
walk_mapping(o->state(), #'build_header);
return buf;
}
varargs string make_mmp(string data, mapping vars, object o) {
// we could regreplace here and do some funny nntp-like encoding of
// leading dots.. but we should simply implement _length instead. one day.
if (data == "." || data[0..1] == ".\n" || strstr(data, "\n.\n") != -1) {
# if 0 // one day we shall be able to parse that, too
vars["_length"] = strlen(data);
# else
P1(("%O: %O tried to send %O via psyc. censored.\n",
previous_object() || ME, vars["_nick"] || vars, data))
// this message makes some people feel like they missed out
// on something..
//data = "*** censored message ***";
data = "";
# endif
}
return mmp_make_header(vars, o)
+ ((data && "" != data) ? "\n"+data+"\n.\n" : "\n.\n");
}
varargs string make_psyc(string mc, string data, mapping vars, object o) {
unless (stringp(data))
data = "";
return psyc_make_header(vars, o, vars["_target"], member(vars, "_context"))
+ ((mc) ? mc +"\n"+data : "");
}
#endif /* FORK }}} */
// notice for completeness: the PSYC renderer does not convert_charset
// from SYSTEM_CHARSET to UTF-8, so to produce correct PSYC you must not
// switch to a different SYSTEM_CHARSET, or you have to fix that...
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