Initial - added better mleaderboard query
This commit is contained in:
commit
34efe6ac4a
111
main.c
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111
main.c
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include <string.h>
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#include <sqlite3.h>
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typedef enum {
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MAP,
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PLAYER,
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OVERVIEW,
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NONE
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} Querytype;
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inline char *get_filename(const char c, Querytype *q) {
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char *qout;
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switch(c) {
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default:
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qout = "queries/mranks.sql";
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*q = OVERVIEW;
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break;
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case 'm':
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qout = "queries/mleaderboard-ojoin.sql";
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*q = MAP;
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break;
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case 'p':
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qout = "queries/rplayers.sql";
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*q = PLAYER;
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break;
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case 't':
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qout = "queries/test.txt";
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*q = NONE;
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break;
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}
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return qout;
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}
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bool executequery(const char *sql, const char *p, int tbl) {
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sqlite3 *db;
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char *error;
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int con = sqlite3_open("db/cts.db", &db);
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if (con != SQLITE_OK) {
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fprintf(stderr, "Can not open database: %s\n", sqlite3_errmsg(db));
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return false;
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}
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sqlite3_stmt *s;
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// prepare sql to s, reading until null character.
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con = sqlite3_prepare_v2(db, sql, -1, &s, NULL);
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if (con != SQLITE_OK) {
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fprintf(stderr, "Could not prepare SQL statement: %s\n", sqlite3_errmsg(db));
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return false;
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}
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// bind parameter with a string length that is the # of bytes to null char.
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con = sqlite3_bind_text(s, 1, p, -1, NULL);
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int e;
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unsigned int cc, i;
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while ((e = sqlite3_step(s)) == SQLITE_ROW) {
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cc = sqlite3_column_count(s);
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for (i = 0; i < cc; i++) {
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printf("%s, ", sqlite3_column_text(s, i));
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}
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printf("\n");
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}
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sqlite3_finalize(s);
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sqlite3_close(db);
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return true;
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}
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// both allocates and frees memory used up by the string..
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// containing the data from query files.
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void getquery(const char *qs) {
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char *qf, *qp;
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Querytype qt;
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char *fname = get_filename(qs[0], &qt);
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if (fname != NULL) {
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FILE *f = fopen(fname, "r");
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if (f != NULL && qf != NULL) {
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// change from fseek/SEEK_END when sql queries are >2 GB in size.
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fseek(f, 0, SEEK_END); // go to the end of file
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unsigned int size = ftell(f);
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qf = malloc(size);
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if (qf != NULL) {
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fseek(f, 0, SEEK_SET); // go to the start of file
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fread(qf, sizeof(char), size, f);
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}
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}
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}
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qp = strchr(qs, '=') + 1; // increment to exclude '='
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printf("%s\n", qf);
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executequery(qf, qp, qt);
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free(qf);
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}
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void html(void) {
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const char *html_top = "Content-Type: text/html\n\n\
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<html><head><meta content=\"text/html; charset=UTF-8\" />\
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<link rel=\"stylesheet\" type=\"text/css\" href=\"page.css\">\
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<title>/v/ - Xonotic</title>\
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<p class='hidden'>:-) / nice one<br></p>";
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const char *html_bot = "<br><br><p classname='footer'>Pages under construction.<br>\
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Service may sporadically become unavailable.<br>\
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In-game database is not directly synced with this web server.\
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</p>\
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</body></html>";
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getquery(getenv("QUERY_STRING"));
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printf("%s %s", html_top, html_bot);
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return;
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}
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int main(void) {
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getquery("map=pornstar-kaine");
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}
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5
queries/mleaderboard-ojoin.sql
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5
queries/mleaderboard-ojoin.sql
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@ -0,0 +1,5 @@
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select trank, tvalue, ifnull(alias, "Unregistered Player")
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from Cts_times, Cts_ranks
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left join Id2alias
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on idvalue = cryptokey
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where trank = idrank and Cts_times.mapid = Cts_ranks.mapid and Cts_times.mapid = ?
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8
queries/mleaderboard.sql
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8
queries/mleaderboard.sql
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select trank, idvalue, tvalue
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from Cts_times, Cts_ranks
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where trank = idrank and Cts_times.mapid = Cts_ranks.mapid and Cts_times.mapid = ?
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order by trank
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-- get full leaderboard of the map
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-- aliases are not included because
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-- not ever player has a registered alias.
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7
queries/mplayers.sql
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7
queries/mplayers.sql
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@ -0,0 +1,7 @@
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select idrank, idvalue, alias
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from Cts_ranks, Id2alias
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where idvalue = cryptokey and mapid = ?
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order by idrank
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-- get registered/aliased players who have played on
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-- the specified map.
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8
queries/mranks.sql
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8
queries/mranks.sql
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select Cts_ranks.mapid, max(trank), min(tvalue), alias
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from Cts_ranks, Cts_times, Id2alias
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where Cts_ranks.mapid = Cts_times.mapid
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and tvalue != 0
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and cryptokey = idvalue
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and idrank = 1
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group by Cts_ranks.mapid
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order by max(trank);
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4
queries/rplayers.sql
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4
queries/rplayers.sql
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select alias, mapid, idrank
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from Cts_ranks, Id2alias
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where idvalue = cryptokey and cryptokey = ?
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order by idrank
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