#include <cstdio>
+#include <cstring>
+#include <iconv.h>
#include <unistd.h>
#include <pqxx/pqxx>
#include "glwindow.h"
-/*
- * A trigger that exits whenever it's trigged (used when we change big things
- * such as starting a new tournament, and it's not really worth doing a clean
- * change).
- */
-class ExitTrigger : pqxx::trigger {
+iconv_t ucs4_iconv;
+
+// UCS-4 string
+class widestring : public std::basic_string<unsigned>
+{
public:
- ExitTrigger(pqxx::connection_base &conn, const PGSTD::string &name)
- : pqxx::trigger(conn, name) {}
- virtual ~ExitTrigger() throw () {}
+ void operator= (const char *from)
+ {
+ unsigned bytes = std::strlen(from);
+ char *from_buf = strdup(from);
+ unsigned *to_buf = new unsigned[bytes + 1];
+
+ char *inptr = from_buf, *outptr = reinterpret_cast<char *> (to_buf);
+
+ size_t in_left = bytes;
+ size_t out_left = bytes * sizeof(unsigned);
+
+ size_t ret = iconv(ucs4_iconv, NULL, NULL, &outptr, &out_left);
+ if (ret == (size_t)(-1)) {
+ throw std::runtime_error("Error in iconv during initialization");
+ }
+
+ ret = iconv(ucs4_iconv, &inptr, &in_left, &outptr, &out_left);
+ if (ret == (size_t)(-1)) {
+ perror("iconv");
+ throw std::runtime_error("Error in iconv during conversion");
+ }
+
+ erase(begin(), end());
+ std::copy(to_buf, reinterpret_cast<unsigned *> (outptr), std::back_inserter(*this));
+
+ free(from_buf);
+ delete[] to_buf;
+ }
+};
+
+template<>
+void std::char_traits<unsigned>::assign(unsigned &to, unsigned const &from)
+{
+ to = from;
+}
+
+template<>
+unsigned *std::char_traits<unsigned>::copy(unsigned *to, unsigned const *from, unsigned n)
+{
+ return static_cast<unsigned *>(memcpy(to, from, n * sizeof(unsigned)));
+}
+
+template<>
+unsigned *std::char_traits<unsigned>::move(unsigned *to, unsigned const *from, unsigned n)
+{
+ return static_cast<unsigned *>(memmove(to, from, n * sizeof(unsigned)));
+}
+
+template<>
+unsigned *std::char_traits<unsigned>::assign(unsigned *to, size_t n, unsigned a)
+{
+ for (unsigned i = 0; i < n; ++i)
+ *to++ = a;
+ return to;
+}
+
+
+template<>
+void pqxx::from_string<widestring>(const char *from, widestring &to)
+{
+ to = from;
+}
+
+class Tournament {
+public:
+ int id;
+ widestring name;
+};
+
+Tournament active_tournament;
+
+/* A trigger that sets a flag whenever it's trigged. */
+class FlagTrigger : pqxx::trigger {
+private:
+ bool flag;
+
+public:
+ FlagTrigger(pqxx::connection_base &conn, const PGSTD::string &name)
+ : pqxx::trigger(conn, name), flag(false) {}
+ virtual ~FlagTrigger() throw () {}
virtual void operator() (int pid)
{
- std::fprintf(stderr, "Received an exit trigger from pid %u\n", pid);
- exit(0);
+ flag = true;
+ std::fprintf(stderr, "Received a flag trigger from pid %u\n", pid);
+ }
+
+ bool get_flag() const
+ {
+ return flag;
+ }
+
+ void reset_flag()
+ {
+ flag = false;
}
};
+/* A transactor that fetches the current tournament and some information about it. */
+class FetchCurrentTournament : public pqxx::transactor<> {
+private:
+ Tournament *tourn;
+
+public:
+ FetchCurrentTournament(Tournament *tourn) : tourn(tourn) {}
+ void operator() (pqxx::transaction<> &t)
+ {
+ pqxx::result res( t.exec("SELECT * FROM bigscreen.active_tournament NATURAL JOIN tournaments") );
+ try {
+ pqxx::result::tuple tournament = res.at(0);
+
+ tourn->id = tournament["tournament"].as(tourn->id);
+ tourn->name = tournament["tournamentname"].as(tourn->name);
+ } catch (PGSTD::out_of_range &e) {
+ tourn->id = -1;
+ tourn->name = "";
+ }
+ }
+};
+
+void init(pqxx::connection &conn)
+{
+ conn.perform(FetchCurrentTournament(&active_tournament));
+
+ if (active_tournament.id == -1) {
+ std::fprintf(stderr, "No active tournament\n");
+ } else {
+ std::fprintf(stderr, "Current tournament is %d (name: '%s')\n",
+ active_tournament.id, active_tournament.name.c_str());
+ }
+}
+
+void main_loop(pqxx::connection &conn)
+{
+ if (active_tournament.id == -1) {
+ // No active tournament, sleep a second or so and exit
+ sleep(1);
+ return;
+ }
+
+ pqxx::work t(conn, "trx");
+
+ // fetch all songs
+ pqxx::result res( t.exec("SELECT * FROM songs") );
+ for (pqxx::result::const_iterator i = res.begin(); i != res.end(); ++i) {
+ std::fprintf(stderr, "%s\n", i["title"].c_str());
+ }
+ t.commit();
+
+ sleep(1);
+}
+
int main(int argc, char **argv)
{
+ ucs4_iconv = iconv_open("ucs-4", "utf-8");
+
GLWindow glw("CCBS bigscreen", 800, 600, 32, false, 16, -1);
try {
- pqxx::connection conn("dbname=ccbs host=sql.samfundet.no user=ccbs password=GeT|>>B_");
- ExitTrigger et(conn, "bs_tournament_changed");
+ pqxx::connection conn("dbname=ccbs host=altersex.samfundet.no user=ccbs password=GeT|>>B_");
+ FlagTrigger tournament_changed(conn, "active_tournament");
- sleep(1);
-
- pqxx::work t(conn, "trx");
-
- // fetch all songs
- pqxx::result res( t.exec("SELECT * FROM songs") );
- for (pqxx::result::const_iterator i = res.begin(); i != res.end(); ++i) {
- std::fprintf(stderr, "%s\n", i["title"].c_str());
+ // when active_tournament is changed, we destroy everything and start from scratch
+ for ( ;; ) {
+ tournament_changed.reset_flag();
+ init(conn);
+ do {
+ main_loop(conn);
+ conn.get_notifs();
+ } while (!tournament_changed.get_flag());
+ std::fprintf(stderr, "active_tournament changed, resetting...\n");
}
- t.commit();
- conn.get_notifs();
- sleep(1);
} catch (const std::exception &e) {
std::fprintf(stderr, "Exception: %s\n", e.what());
exit(1);
projects / ccbs / blobdiff