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psyced/world/net/twitter/polly.c

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2009-04-18 06:09:05 +00:00
// vim:foldmethod=marker:syntax=lpc:noexpandtab
//
// yeah yeah twitter.. why twitter?
// http://about.psyc.eu/Twitter
#include <net.h>
persistent mixed lastid;
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volatile object feed;
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parse(string body, mapping headers) {
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mixed wurst;
string nick;
object o;
mapping d, p;
int i;
if (!body || body == "") {
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P1(("%O failed to get its timeline from %O.\n", ME,
previous_object()))
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PT(("Got headers: %O\n", headers))
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return;
}
//#if DEBUG > 0
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rm(DATA_PATH "twitter/timeline.json");
write_file(DATA_PATH "twitter/timeline.json", body);
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P4((body))
//#endif
unless (pointerp(wurst = parse_json(body))) {
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monitor_report("_failure_network_fetch_twitter_broken",
"[_source] failed to parse its timeline");
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return;
}
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unless (sizeof(wurst)) {
monitor_report("_failure_network_fetch_twitter_empty",
"[_source] received an empty structure.");
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return;
}
// this used to fail on MAX_INT turning the ints to negative.. it would work for
// a while longer using floats, but since floating point mantissa in lpc is only
// 32 bits wide, it's just a question of time until we hit that roof again (when
// status_id reaches 4294967296). so let's try strings instead. funny to run into
// such a weird problem only after years that twitter has been in existence.
// twitterific may have run into the same problem, as the timing of its breakdown
// matches ours.
if (lastid && wurst[0]["id"] <= lastid) {
P1(("%O received %d old updates (id0 %O <= lastid %O).\n",
ME, sizeof(wurst), wurst[0]["id"], lastid))
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return;
}
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lastid = wurst[0]["id"];
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P2(("%O -- new lastid %O\n", ME, lastid))
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save_object(DATA_PATH "twitter");
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for (i=sizeof(wurst)-1; i>=0; i--) {
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d = wurst[i];
unless (mappingp(d)) {
P1(("%O got a broken tweet: %O.\n", ME, d))
continue;
}
p = d["user"];
unless (mappingp(p)) {
P1(("%O got a userless tweet.\n", ME))
continue;
}
unless (nick = p["screen_name"]) {
P1(("%O got a nickless tweeter.\n", ME))
continue;
}
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P4((" %O", nick))
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o = find_place(nick);
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// _message_twitter ? not so convincing.. a lot of the
// things are converted rss newsfeeds, and when private
// people are "chatting" over twitter, they are still
// "broadcasting" each message to a random conjunction
// of friends and strangers (we don't follow private
// twitters with this gateway!) ... thus it is quite
// appropriate that twitters are not given the same
// relevance as a _message. still you can /highlight
// particular senders in your client...
//
sendmsg(o,
// "_notice_headline_twitter", "([_nick]) [_headline]",
"_message_twitter", d["text"],
([
"_headline": d["text"], // should i send text as _action?
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"_nick": nick,
// _count seems to be the better word for this
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"_amount_updates": p["statuses_count"],
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"_amount_followers": p["followers_count"],
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"_amount_sources": p["friends_count"],
"_color": "#"+ p["profile_sidebar_fill_color"],
"_description": p["description"] || "",
"_page": p["url"] || "",
"_name": p["name"] || "",
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// "_contact_twitter": p["id"],
"_description_agent_HTML": d["source"],
"_reference_reply": d["in_reply_to_screen_name"],
// "_twit": d["id"],
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"_uniform_photo": p["profile_image_url"] || "",
"_uniform_photo_background":
p["profile_background_image_url"] || ""
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]), "/"); // send as root
// der spiegel u.a. twittern <20>brigens in latin-1
// w<>hrend psyc utf-8 erwartet.. eine char guess engine
// muss her.. FIXME
}
}
fetch() {
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P2(("%O going to fetch from %O since %O\n", ME, feed, lastid))
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call_out( #'fetch, 4 * 59 ); // odd is better
feed -> content( #'parse, 1, 1 );
// twitter ignores since_id if count is present. stupid.
feed -> fetch("http://twitter.com/statuses/friends_timeline.json?"
// +( lastid? ("since_id="+ lastid) : "count=23"));
"count="+( lastid? ("23&since_id="+ lastid) : "23"));
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}
create() {
mapping config;
object o = find_object(CONFIG_PATH "config");
if (o) config = o->qConfig();
if (!config) {
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P1(("\nNo configuration for twitter gateway found.\n"))
//destruct(ME);
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return;
}
restore_object(DATA_PATH "twitter");
// we could even choose to inherit this instead...
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feed = clone_object(NET_PATH "http/fetch");
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//feed -> sAgent(SERVER_VERSION " builtin Twitter to PSYC gateway");
feed -> sAuth(config["nickname"], config["password"]);
call_out( #'fetch, 14 );
}