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authorAnthony Wang2022-10-20 00:33:23 -0400
committerAnthony Wang2022-10-20 00:33:23 -0400
commit6ea6f9c1c60c7025e0b7bdc95a5d5aa395eedfbc (patch)
treeeadbd7ba7113103fd9c2c95919fd84ef434ecca2 /sd.c
parent87ea08e8f7e51e33f1a78d1dda9cf8d786199d3d (diff)
Rename to SDC
Diffstat (limited to 'sd.c')
-rw-r--r--sd.c111
1 files changed, 111 insertions, 0 deletions
diff --git a/sd.c b/sd.c
new file mode 100644
index 0000000..21caa57
--- /dev/null
+++ b/sd.c
@@ -0,0 +1,111 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <sqlite3.h>
+#include "segmenttree.h"
+
+int main(int argc, char* argv[]) {
+ char *file = "cards";
+ bool verbose = false;
+
+ /* Proccess args */
+ static struct option long_options[] = {
+ {"file", required_argument, NULL, 'f'},
+ {"verbose", no_argument, NULL, 'v'}
+ };
+ while (1) {
+ int option_index = 0;
+ int c = getopt_long(argc, argv, "f:v", long_options, &option_index);
+ if (c == -1) break;
+ switch (c) {
+ case 'f': file = strdup(optarg); break;
+ case 'v': verbose = true; break;
+ default: abort();
+ }
+ }
+
+ /* Seed the RNG */
+ srand(time(0));
+
+ /* Connect to db */
+ sqlite3 *db;
+ sqlite3_open(file, &db);
+
+ /* Get number of cards */
+ sqlite3_stmt *stmt;
+ sqlite3_prepare_v3(db, "SELECT COUNT(*) FROM cards", -1, 0, &stmt, NULL);
+ sqlite3_step(stmt);
+ int N = sqlite3_column_int(stmt, 0);
+ sqlite3_finalize(stmt);
+
+ /* Get card weights */
+ sqlite3_prepare_v3(db, "SELECT weight FROM cards", -1, 0, &stmt, NULL);
+ seg = (int*)malloc(4 * N * sizeof(int));
+ build(stmt, 0, N - 1, 1);
+ sqlite3_finalize(stmt);
+
+ if (verbose) {
+ for (int i = 0; i < 4 * N; i++) {
+ printf("%d ", seg[i]);
+ }
+ printf("\n");
+ }
+
+ /* Disable input buffering */
+ system("stty -F /dev/tty cbreak min 1");
+ system("stty -F /dev/tty -echo");
+
+ while (true) {
+ int x = (long long)rand() * rand() % seg[1];
+ int res[2];
+ query(res, x, 0, N-1, 1);
+ int w = res[0], i = res[1];
+
+ if (verbose) {
+ printf("%d %d %d %d\n", seg[1], x, w, i);
+ }
+
+ /* Get card contents from database */
+ sqlite3_prepare_v3(db, "SELECT key, val FROM cards WHERE idx=?", -1, 0, &stmt, NULL);
+ sqlite3_bind_int(stmt, 1, i);
+ sqlite3_step(stmt);
+ char *key, *val;
+ key = strdup(sqlite3_column_text(stmt, 0));
+ val = strdup(sqlite3_column_text(stmt, 1));
+ sqlite3_finalize(stmt);
+
+ printf("> %s\n", key);
+
+ /* Wait for confirmation */
+ char b = getchar();
+ printf("%s\n", val);
+
+ /* Read user input */
+ b = getchar();
+ if (b == 'y') {
+ w >>= 1;
+ }
+ else if (b == 'n') {
+ w <<= 3;
+ }
+ else {
+ break;
+ }
+
+ /* Update segment tree and database */
+ update(i, w, 0, N - 1, 1);
+ sqlite3_prepare_v3(db, "UPDATE cards SET weight=? WHERE idx=?", -1, 0, &stmt, NULL);
+ sqlite3_bind_int(stmt, 1, w);
+ sqlite3_bind_int(stmt, 2, i);
+ sqlite3_step(stmt);
+ sqlite3_finalize(stmt);
+ }
+
+ /* Cleanup */
+ system("stty -F /dev/tty echo");
+ sqlite3_close(db);
+}