Adding hw 4

extra/DSA/data.cfg

@@ -52,5 +52,10 @@ application:
 	# [1][2][3]
 	# [4][5][6]
 	# [7][8][9]
-	timers = [2, 6, 3, 4, 5, 3, 2, 1, 5, 0, 0, 0, 0, 0, 0, 0];
+	timers = [
+			2, 6, 3, 4,
+			5, 3, 2, 1,
+			5, 0, 0, 0,
+			0, 0, 0, 0
+	];
 };

extra/DSA/lists.c

@@ -0,0 +1,232 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+struct candidate_l_t {
+  char name[30];
+  int age       : 8;
+  int convicted : 1;
+  struct candidate_l_t * next_candidate;
+};
+
+struct party_l_t {
+  char name[30];
+  char symbol[10];
+  struct candidate_l_t * candidates;
+  struct party_l_t     * next_party;
+};
+
+typedef struct candidate_l_t * Member;
+typedef struct party_l_t     * Party;
+
+void delete_candidate(Party head, const char * name);
+/* Functions for adding a party or candidate */
+
+void add_party(Party head, Party party) {
+  while (head->next_party != NULL) {
+    head = head->next_party;
+  }
+  head->next_party = party;
+}
+
+void add_candidate(Member head, Member candidate) {
+  while (head->next_candidate != NULL) {
+    head = head->next_candidate;
+  }
+  head->next_candidate = candidate;
+}
+
+void add_candidate_to_party(Party party, Member candidate) {
+  if ( party->candidates == NULL) {
+    party->candidates = candidate;
+  } else {
+    add_candidate(party->candidates, candidate);
+  }
+}
+
+struct party_l_t * new_party(const char * name, const char * symbol) {
+  struct party_l_t * party = calloc(1, sizeof(struct party_l_t));
+  strncpy(party->name, name, 30);
+  strncpy(party->symbol, symbol, 10);
+  return party;
+}
+
+struct candidate_l_t * new_candidate(const char * name, int age,
+                                        int convicted) {
+  struct candidate_l_t * candidate = calloc(1, sizeof(struct candidate_l_t));
+  strncpy(candidate->name, name, 30);
+  candidate->age = (age > 255) ? -1 : age;
+  candidate->convicted = (convicted >= 1) ? 1 : 0;
+  return candidate;
+}
+
+/* Functions for searching party and candidate list */
+
+struct party_l_t *  search_party(Party head, const char * name) {
+  while (head != NULL) {
+    if ( strcmp(head->name, name) == 0) {
+      return head;
+    }
+    head = head->next_party;
+  }
+  return NULL;
+}
+
+struct party_l_t * search_candidate(Party head, const char * name) {
+  Member candidates = NULL;
+  while (head != NULL) {
+    candidates = head->candidates;
+
+    while (candidates != NULL) {
+      if ( strcmp(candidates->name, name) == 0 ) {
+        return head;
+      }
+      candidates = candidates->next_candidate;
+    }
+
+    head = head->next_party;
+  }
+  return NULL;
+}
+
+struct candidate_l_t * get_canditate(Party head, const char * name) {
+  Party current_party = search_candidate(head, name);
+  Member candidates = current_party->candidates;
+
+  while (candidates != NULL) {
+    if ( strcmp(candidates->name, name) == 0 ) {
+      return candidates;
+    }
+    candidates = candidates->next_candidate;
+  }
+  return NULL;
+}
+
+/* Functions for modifying party and candidate attributes */
+
+void modify_candidate(Member candidate, const char * name, int age,
+                      int convicted) {
+  strncpy(candidate->name, name, 30);
+  candidate->age = (age > 255) ? -1 : age;
+  candidate->convicted = (convicted >= 1) ? 1 : 0;
+}
+
+void modify_party(Party party, const char * name, const char * symbol) {
+  strncpy(party->name, name, 30);
+  strncpy(party->symbol, symbol, 10);
+}
+
+void move_candidate(Party head, Party new_party, const char * name) {
+  Party current_party = search_candidate(head, name);
+  Member candidate = get_canditate(current_party, name);
+  Member copy = new_candidate(candidate->name, candidate->age,
+                              candidate->convicted);
+  delete_candidate(current_party, name);
+  add_candidate_to_party(new_party, copy);
+}
+
+/* Functions for deleting parties and candidates */
+
+void delete_candidate(Party head, const char * name) {
+  Party candidate_party = search_candidate(head, name);
+  Member member_list = NULL;
+  if (candidate_party != NULL) {
+    member_list = candidate_party->candidates;
+    if ( strcmp(member_list->name, name) == 0 ) {
+      Member temp = candidate_party->candidates;
+      candidate_party->candidates = candidate_party->candidates->next_candidate;
+      free(temp);
+      return;
+    }
+    while ( member_list != NULL ) {
+      if ( strcmp(member_list->next_candidate->name, name) == 0) {
+        Member temp = member_list->next_candidate;
+        member_list->next_candidate = member_list->next_candidate->next_candidate;
+        free(temp);
+        return;
+      }
+      member_list = member_list->next_candidate;
+    }
+  }
+}
+
+void delete_candidate_list(Party head) {
+  if (head == NULL) {
+    return;
+  }
+  Member temp = NULL;
+  while ( head->candidates != NULL) {
+    temp = head->candidates;
+    head->candidates = head->candidates->next_candidate;
+    free(temp);
+  }
+}
+
+struct party_l_t * delete_party(Party head, const char * name) {
+  Party temp = search_party(head, name);
+  delete_candidate_list(temp);
+  Party * aux = &head;
+  while (*aux) {
+    if ( strcmp((*aux)->name, name) == 0 ) {;
+      Party temp2 = (*aux)->next_party;
+      free(*aux);
+      *aux = temp2;
+      return head;
+    }
+    aux = &(*aux)->next_party;
+  }
+  return NULL;
+}
+
+/* Function for printing all the party members.*/
+
+void print_all(Party head) {
+  printf("\n");
+  Member member_list = NULL;
+  while(head != NULL) {
+    printf("Party Name: %s; Party Symbol: %s\n", head->name, head->symbol);
+    member_list = head->candidates;
+    while ( member_list != NULL ) {
+      printf("\tName: %s; Age: %d; Convicted: %s\n", member_list->name,
+      member_list->age, (member_list->convicted) ? "yes" : "no");
+      member_list = member_list->next_candidate;
+    }
+    member_list = NULL;
+    head = head->next_party;
+  }
+  printf("\n");
+}
+
+int main(void) {
+  Party head = new_party("House Stark", "Wolf");
+  Member bran = new_candidate("bran", 12, 0);
+  Member ed = new_candidate("Ed", 40, 1);
+  Member sansa = new_candidate("sansa", 14, 0);
+
+  Party lannister = new_party("House Lannister", "Tiger");
+  Member jam = new_candidate("Jamie", 30, 1);
+  Member tyr = new_candidate("Tyrion", 41, 0);
+  Member cer = new_candidate("Cersei", 30, 1);
+
+  Party targaryan = new_party("House Targaryen", "Dragon");
+  Member varis = new_candidate("varis", 40, 0);
+  add_candidate_to_party(targaryan, varis);
+
+  add_party(head, lannister);
+  add_party(head, targaryan);
+  add_candidate_to_party(head, bran);
+  add_candidate_to_party(head, ed);
+  add_candidate_to_party(head, sansa);
+  add_candidate_to_party(lannister, jam);
+  add_candidate_to_party(lannister, tyr);
+  add_candidate_to_party(lannister, cer);
+
+  // delete_candidate(head, "bran");
+  // delete_candidate(head, "Tyrion");
+  // delete_candidate_list(head);
+  move_candidate(head, targaryan, "Ed");
+
+  print_all(head);
+  print_all(head);
+  return EXIT_SUCCESS;
+}