Add comments and clean up

movies/csv_parser.c

@@ -82,6 +82,7 @@ struct csv* parse_line(char* line) {
   return mov;
 }
 
+// Debugging; not used
 void print_movies(struct node* head) {
 
   if(!head) {
@@ -102,6 +103,7 @@ void print_movies(struct node* head) {
   }
 }
 
+// Debugging; not used
 void print_line(struct csv* printer) {
 
   printf("%s, %i, ", printer->title, printer->year);
@@ -112,6 +114,7 @@ void print_line(struct csv* printer) {
 
 }
 
+// Counts number of times given char appears in string
 int count_char(char* text, char cha) {
 
   int length = strlen(text);

movies/input.h

@@ -6,6 +6,7 @@
 #ifndef INPUT
 #define INPUT
 
+// Error checking integer input
 int integer_input(char*);
 
 #endif

movies/movies.c

@@ -11,6 +11,7 @@ int main(int argc, char** argv) {
 
   struct node* head = parse_csv(argv[1]);
 
+  // menu logic
   enum OPTIONS menu_select = 0;
   while(1) {
 
@@ -32,11 +33,7 @@ int main(int argc, char** argv) {
       default:
         printf("You naughty~ Pick a correct option next time.\n");
     }
-
   }
-  print_movies(head);
-
-  return 0;
 }
 
 int menu() {
@@ -71,6 +68,7 @@ void movie_year(struct node* head) {
   *val = integer_input("Enter year to search movies from: ");
   haschanged = 0;
 
+  // Prints each node if movie year the same as specified
   iterate_nodes(head, f, val);
 
   if(!haschanged) {
@@ -85,6 +83,7 @@ void lang_print(struct csv* data, void* val) {
 
   for(int i = 0; i < data->numlang; i++) {
 
+    // Prints if movie is in given language 
     if(!strcmp(val, data->languages[i])) {
       printf("%d %s\n", data->year, data->title);
       haschanged = 1;
@@ -118,8 +117,6 @@ void check_year(int* data, int* year) {
   if(*data == *year)
     haschanged = 1;
 
-  //printf("%d, %d\n",*data, *year);
-
 }
 
 void find_year(struct csv* data, void* year) {
@@ -127,30 +124,26 @@ void find_year(struct csv* data, void* year) {
   void* f = &check_year;
   
   haschanged = 0;
+  // Finds every year that has a movie produced in our list
   iterate_nodes(year, f, &data->year);
 
-  if(!haschanged) {
+  if(!haschanged)
     appendv_node(year, &data->year);
-    //printf("Change Val: %d\n", data->year);
-  }
 
   haschanged = 0;
 
 }
 
-void print_node(int* val, char* garbage) { 
-
-  printf("%s\n", garbage);
-}
-
 void print_rating(struct csv* data, struct csv** val) {
 
+  // Null case handled here
   if(val[0] == NULL) {
     if(data->year == haschanged)
       val[0] = data;
     return;
   }
 
+  // Sets pointer to movie struct of new highest rating
   if(data->rating > val[0]->rating
      && data->year == haschanged)
     val[0] = data;
@@ -166,6 +159,7 @@ void index_nodes(int* val, void* head) {
 
   void* f =  &print_rating;
 
+  // Find the node of highest rating for specified year
   iterate_nodes(head, f, cur_val);
 
   printf("%d %2.1f %s\n", cur_val[0]->year, cur_val[0]->rating, cur_val[0]->title);

movies/movies.h

@@ -12,10 +12,12 @@
 
 int menu();
 
+// Headers for the options called by menu
 void movie_year(struct node*);
 void movie_rate(struct node*);
 void movie_lang(struct node*);
 
+// Menu Options
 enum OPTIONS {
   YEAR = 1,
   RATE = 2,

movies/node.h

@@ -8,12 +8,17 @@ struct node {
   void* data;
 };
 
+// Appends Node to list
 void append_node(struct node*, struct node*);
 
+// Creates node with value and appends
+// Returns node that was created
 struct node* appendv_node(struct node*, void*);
 
+// Counts the number of nodes in a list
 int count_nodes(struct node*);
 
+// Iterates over every node in a list and runs the given function
 void iterate_nodes(struct node*, void *func(void*, void*), void*);
 
 #endif