Cleans up some code and adds documentation

src/db.h

@@ -13,13 +13,35 @@ enum DB_OPTIONS {
  * VA args
  * 	- Expects book_t if option is ADD
  * 	- Expects int if option is REMOVE
+ *
+ * Handles the whole process of interacting with the database
  */
 void do_db_entry(enum DB_OPTIONS option, ...);
 
+/**
+ * void setup_db
+ * sqlite3* db - The database
+ *
+ * Just creates the database if it doesn't exist.
+ */
 void setup_db(sqlite3* db);
 
+/**
+ * void add_to_db
+ * book_t* book - The struct full of book information
+ * sqlite3* db - The database
+ *
+ * Adds the book information to the database
+ */
 void add_to_db(book_t* book, sqlite3* db);
 
+/**
+ * void remove_from_db
+ * int id - The id of the book to remove
+ * sqlite3* db - The database
+ *
+ * Removes the given ID (and its associated book) from the database.
+ */
 void remove_from_db(int id, sqlite3* db);
 
 #endif

src/main.c

@@ -12,10 +12,6 @@
 
 #define MAX_BUF_LEN 1024 
 
-/**
- * TODO: we need to check the csv file for duplicates
- * TODO: allow us to remove a book from the csv and update the ids
- */
 void do_ISBN_get(char* argv[])
 {
 	// want to hold a max of 14 so we can hold up to ISBN13s
@@ -70,7 +66,6 @@ void print_help_menu(char* program)
 	puts("remove [id] -- Removes a book with the given ID from the book database.");
 }
 
-
 void process_args(char* argv[])
 {
 	int id;
@@ -95,8 +90,6 @@ void process_args(char* argv[])
 	}
 }
 
-
-
 int main(int argc, char* argv[])
 {
 	if (1 == argc) {