1 files changed, 37 insertions, 0 deletions
diff --git a/src/save.c b/src/save.c
new file mode 100644
index 0000000..989ab60
--- /dev/null
+++ b/src/save.c
@@ -0,0 +1,37 @@
+#include "globals.h"
+
+/* NOTE: integers are represented internally by unsigned long long ints, but in the save they are always 64 bits */
+
+void save_handler(struct player_t *player)
+{
+    printf("Enter the file to save your portfolio in: ");
+
+    char buf[128];
+    scanf("%127s", buf);
+
+    printf("Writing data...\n");
+    FILE *f = fopen(buf, "w");
+
+    const char *magic = "PORTv1";
+    fwrite(magic, strlen(magic), 1, f);
+
+    uint64_t be_cash = to_be64(player->cash.cents);
+
+    fwrite(&be_cash, sizeof(be_cash), 1, f);
+
+    for(uint i = 0; i < player->portfolio_len; ++i)
+    {
+        struct stock_t *stock = player->portfolio + i;
+
+        uint64_t be_symlen = to_be64(strlen(stock->symbol));
+        fwrite(&be_symlen, sizeof(be_symlen), 1, f);
+        fwrite(stock->symbol, strlen(stock->symbol) + 1, 1, f);
+
+        uint64_t be_count = to_be64(stock->count);
+        fwrite(&be_count, sizeof(be_count), 1, f);
+    }
+
+    fclose(f);
+
+    printf("Done saving.");
+}