Split files into header and implementation
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150
includes/dbquery.c
Normal file
150
includes/dbquery.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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static inline char *get_filename(const char *c) {
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char *qout = "queries/mranks.sql";
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if (c != NULL) {
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switch(*c) {
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case 'm':
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qout = "queries/mleaderboard-ojoin.sql";
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break;
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case 'p':
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qout = "queries/rplayers.sql";
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break;
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case 't':
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qout = "queries/test.txt";
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break;
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}
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}
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return qout;
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}
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static inline void print_tblheader(const char *c) {
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char *labels;
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switch (*c) {
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default:
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labels = "<TABLE class='center'>\
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<TH class='tablename' COLSPAN='4'> <H3><BR>Map List</H3> </TH>\
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<TR>\
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<TH class='columnname'>Name</TH>\
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<TH class='columnname'>Records</TH>\
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<TH class='columnname'>Best Time</TH>\
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<TH class='columnname'>Held By</TH>\
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</TR>";
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break;
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case 'm':
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labels = "<TABLE class='center'>\
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<TH class='tablename' COLSPAN='3'><H3><BR>Leaderboard</H3></TH>\
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<TR>\
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<TH class='columnname'>Rank</TH>\
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<TH class='columnname'>Name</TH>\
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<TH class='columnname'>Time</TH>\
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</TR>";
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break;
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case 'p':
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labels = "<TABLE class='center'>\
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<TH class='tablename' COLSPAN='3'> <H3><BR>Ranks</H3> </TH>\
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<TR>\
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<TH class='columnname'>Name</TH>\
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<TH class='columnname'>Map</TH>\
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<TH class='columnname'>Rank</TH>\
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</TR>";
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break;
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}
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printf("%s", labels);
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}
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// input is an integer as a string.
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// the time is in centiseconds.
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// this means the longest XDF run this can support is
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// 21,474,836.47 seconds
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// someone would need to idle in-game for 248 days
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static void print_time(const unsigned char *strcs) {
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const unsigned int num = strtoul((const char*)strcs, NULL, 10);
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unsigned int s = num/100;
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const unsigned int cs = num % 100;
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const unsigned int min = s/60;
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s = s % 60;
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if (min > 0) {
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printf("<TD>%u:%.2u.%.2u</TD>", min, s, cs);
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} else {
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printf("<TD>%u.%.2u</TD>", s, cs);
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}
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}
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// display and format the results of the query.
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static void qresult(sqlite3_stmt * const sp, const char *c) {
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int e;
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unsigned int i;
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unsigned int cc = sqlite3_column_count(sp);
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print_tblheader(c);
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while ((e = sqlite3_step(sp)) == SQLITE_ROW) {
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printf("<TR>");
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for (i = 0; i < cc; i++) {
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if ((*c == 'm' && i == 1) || (*c == '\0' && i == 3) || (*c == 'p' && i == 0)) {
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printf("<TD>%s</TD>", sqlite3_column_text(sp, i));
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} else if ((i == 0 && *c == '\0') || (i == 1 && *c == 'p') ) {
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printf("<TD><a href='/cgi/cts.py?map=%s'>%s</a></TD>", sqlite3_column_text(sp, i), sqlite3_column_text(sp, i));
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} else if (i == 2 && (*c == 'm' || *c == '\0')) {
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print_time(sqlite3_column_text(sp, i));
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} else {
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printf("<TD>%s</TD>", sqlite3_column_text(sp, i));
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}
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}
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printf("</TR>");
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}
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printf("</TABLE>");
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}
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// const char 'sql' is never NULL.
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// const char 'str' may be NULL, however it is only when
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// the contents of mranks.sql is in const char 'sql'.
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static bool executequery(const char *sql, const char *str) {
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const char *p = (str != NULL) ? strchr(str, '=') + 1 : NULL;
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const char qc = (str != NULL) ? str[0] : '\0';
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sqlite3 *db;
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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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qresult(s, &qc);
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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 = NULL;
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char *fname = get_filename(qs);
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if (fname != NULL) {
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FILE *f = fopen(fname, "r");
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if (f != 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 = calloc(size, sizeof(char));
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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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fclose(f);
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}
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executequery(qf, qs);
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free(qf);
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}
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16
includes/dbquery.h
Normal file
16
includes/dbquery.h
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@ -0,0 +1,16 @@
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#ifndef DBQUERY_H
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#define DBQUERY_H
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inline char *get_filename(const char *) ;
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inline void print_tblheader(const char *);
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void print_time(const unsigned char *);
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void qresult(void * const, const char *);
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int executequery(const char *, const char *);
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void getquery(const char *);
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#endif
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150
main.c
150
main.c
@ -1,153 +1,5 @@
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#include "dbquery.h"
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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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inline char *get_filename(const char *c) {
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char *qout = "queries/mranks.sql";
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if (c != NULL) {
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switch(*c) {
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case 'm':
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qout = "queries/mleaderboard-ojoin.sql";
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break;
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case 'p':
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qout = "queries/rplayers.sql";
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break;
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case 't':
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qout = "queries/test.txt";
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break;
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}
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}
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return qout;
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}
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inline void print_tblheader(const char *c) {
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char *labels;
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switch (*c) {
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default:
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labels = "<TABLE class='center'>\
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<TH class='tablename' COLSPAN='4'> <H3><BR>Map List</H3> </TH>\
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<TR>\
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<TH class='columnname'>Name</TH>\
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<TH class='columnname'>Records</TH>\
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<TH class='columnname'>Best Time</TH>\
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<TH class='columnname'>Held By</TH>\
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</TR>";
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break;
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case 'm':
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labels = "<TABLE class='center'>\
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<TH class='tablename' COLSPAN='3'><H3><BR>Leaderboard</H3></TH>\
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<TR>\
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<TH class='columnname'>Rank</TH>\
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<TH class='columnname'>Name</TH>\
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<TH class='columnname'>Time</TH>\
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</TR>";
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break;
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case 'p':
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labels = "<TABLE class='center'>\
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<TH class='tablename' COLSPAN='3'> <H3><BR>Ranks</H3> </TH>\
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<TR>\
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<TH class='columnname'>Name</TH>\
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<TH class='columnname'>Map</TH>\
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<TH class='columnname'>Rank</TH>\
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</TR>";
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break;
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}
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printf("%s", labels);
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}
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// input is an integer as a string.
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// the time is in centiseconds.
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// this means the longest XDF run this can support is
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// 21,474,836.47 seconds
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// someone would need to idle in-game for 248 days
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void print_time(const unsigned char *strcs) {
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const unsigned int num = strtoul((const char*)strcs, NULL, 10);
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unsigned int s = num/100;
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const unsigned int cs = num % 100;
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const unsigned int min = s/60;
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s = s % 60;
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if (min > 0) {
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printf("<TD>%u:%.2u.%.2u</TD>", min, s, cs);
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} else {
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printf("<TD>%u.%.2u</TD>", s, cs);
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}
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}
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// display and format the results of the query.
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void qresult(sqlite3_stmt * const sp, const char *c) {
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int e;
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unsigned int i;
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unsigned int cc = sqlite3_column_count(sp);
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print_tblheader(c);
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while ((e = sqlite3_step(sp)) == SQLITE_ROW) {
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printf("<TR>");
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for (i = 0; i < cc; i++) {
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if ((*c == 'm' && i == 1) || (*c == '\0' && i == 3) || (*c == 'p' && i == 0)) {
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printf("<TD>%s</TD>", sqlite3_column_text(sp, i));
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} else if ((i == 0 && *c == '\0') || (i == 1 && *c == 'p') ) {
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printf("<TD><a href='/cgi/cts.py?map=%s'>%s</a></TD>", sqlite3_column_text(sp, i), sqlite3_column_text(sp, i));
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} else if (i == 2 && (*c == 'm' || *c == '\0')) {
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print_time(sqlite3_column_text(sp, i));
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} else {
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printf("<TD>%s</TD>", sqlite3_column_text(sp, i));
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}
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}
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printf("</TR>");
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}
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printf("</TABLE>");
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}
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// const char 'sql' is never NULL.
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// const char 'str' may be NULL, however it is only when
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// the contents of mranks.sql is in const char 'sql'.
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bool executequery(const char *sql, const char *str) {
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const char *p = (str != NULL) ? strchr(str, '=') + 1 : NULL;
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const char qc = (str != NULL) ? str[0] : '\0';
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sqlite3 *db;
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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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qresult(s, &qc);
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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 = NULL;
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char *fname = get_filename(qs);
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if (fname != NULL) {
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FILE *f = fopen(fname, "r");
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if (f != 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 = calloc(size, sizeof(char));
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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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fclose(f);
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}
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executequery(qf, qs);
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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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