data work

1 files changed, 127 insertions, 4 deletions

diff --git a/src/data.c b/src/data.c
index 0d43d3c..8c7ed53 100644
--- a/src/data.c
+++ b/src/data.c
@@ -1,5 +1,6 @@
-#include <asm-generic/errno-base.h>
 #define _GNU_SOURCE
+#include <errno.h>
+#include <stdlib.h>
 #include "data.h"
 #include "login.h"
 #include <errno.h>
@@ -8,6 +9,8 @@
 #include <sys/stat.h>
 #include <unistd.h>
 
+int deserialize_player(FILE* fp, player_t *plr);
+int serialize_player(player_t* plr, FILE* fp);
 int try_make_data_dirs() {
   int err = 0;
   err = mkdir("data", S_IRWXU);
@@ -43,9 +46,15 @@ int try_load_plr(char *player_name, playerc_t *plr) {
 
 	  printf("Got fp\n");
 
-	  fread(&plr->plr, sizeof(player_t), 1, fp);
+        if (deserialize_player(fp, &plr->plr)) {
+           printf("Couldn't deserialize player\n");
+           return -1;
+        }
   } else {
-	  return 4; // File doesn't exist
+
+            printf("Couldn't open file: %d\n", errno);
+            printf("%s", strerror(errno));
+            return -1;
   }
 
   printf("Read file into plr\n");
@@ -75,8 +84,122 @@ int try_write_plr(player_t *plr) {
 
   FILE *fp = fopen(fname, "wb");
 
-  fwrite(&plr, sizeof(player_t), 1, fp);
+  char* buf = malloc(sizeof(player_t) + 1);
+  serialize_player(plr, fp);
+
+  printf("serialized as: %s\n");
+
+    fprintf(fp, "%s", buf);
   fclose(fp);
 
   return err;
 }
+
+/*
+ * Ugh
+ *
+ * serialize_player takes in a `player_t` struct and a buffer and does some
+ * magic to write out the player in a format that can be easily parsed back
+ * including strings
+ *
+ * because we can't have nice things
+ *
+ * this function is sensitive to player struct updates so if things break but
+ * don't fail to compile this is probably the reason
+ */
+int serialize_player(player_t *plr, FILE* fp) {
+    int err = 0;
+
+    err = fprintf(fp, "%d,%d,%d,%d,%d,%s,%s", plr->xp, plr->hp, plr->max_hp, plr->level, plr->location_id, plr->pw_hash, plr->name); 
+
+    return err;
+}
+
+/*
+ * deserialize_player reverses the results of serialize_player.
+ *
+ * because even when we're gay we can't have nice things
+ *
+ * this function is *also* sensitive to player struct updates (no shit) so if
+ * things break but still compile it's probably this thing
+ */
+int deserialize_player(FILE* fp, player_t* plr) {
+    int err = 0;
+
+    if (fp == NULL) {
+        perror("can't open player file");
+        return -1;
+    }
+
+    int c;
+
+    enum ParsePlayerState state = ReadingData;
+    enum ParsePlayerType type = Xp;
+
+    char* buf = malloc(1 << 10);
+    printf("Allocated buf\n");
+    
+    while ((c = getc(fp) != EOF)) {
+       if (c == ',') {
+           state = Comma;
+           printf("Found comma");
+       }
+       switch (state) {
+           case ReadingData:
+                strncat(buf, c, 1);
+                break;
+            case Comma:
+                switch (type) {
+                    case Xp: ;
+                        int xp = atoi(buf);
+                        plr->xp = xp;
+                        state = ReadingData;
+                        type = Hp;
+                        memset(buf, 0, strlen(buf));
+                        break;
+                    case Hp: ;
+                        int hp = atoi(buf);
+                        plr->hp = hp;
+                        state = ReadingData;
+                        type = MaxHp;
+                        memset(buf, 0, strlen(buf));
+                        break;
+                    case MaxHp: ;
+                        int max_hp = atoi(buf);
+                        plr->max_hp = max_hp;
+                        state = ReadingData;
+                        type = Level;
+                        memset(buf, 0, strlen(buf));
+                        break;
+                    case Level: ;
+                        int level = atoi(buf);
+                        plr->level = level;
+                        state = ReadingData;
+                        type = LocationId;
+                        memset(buf, 0, strlen(buf));
+                        break;
+                    case LocationId: ;
+                        int location_id = atoi(buf);
+                        plr->location_id = location_id;
+                        state = ReadingData;
+                        type = PwHash;
+                        memset(buf, 0, strlen(buf));
+                        break;
+                    case PwHash: ;
+                        plr->pw_hash = malloc(1 << 5);
+                        strcpy(plr->pw_hash, buf);
+                        state = ReadingData;
+                        type = Name;
+                        memset(buf, 0, strlen(buf));
+                        break;
+                    case Name: ;
+                        plr->name = malloc(1 << 5);
+                        strcpy(plr->name, buf);
+                        // we're done here
+                        free(buf);
+                        return 0;
+                }
+       }
+    }
+    return err;
+}