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87 lines
1.4 KiB
87 lines
1.4 KiB
// List.cpp: implementation of the List class.
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//
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//////////////////////////////////////////////////////////////////////
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#include "List.h"
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#include "Object.h"
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#include <string.h>
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//////////////////////////////////////////////////////////////////////
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// Construction/Destruction
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//////////////////////////////////////////////////////////////////////
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List::List()
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{
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head = tail = 0;
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length = 0;
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}
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List::~List()
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{
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Object* o,*p;
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o = head;
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if (o) p = o->next;
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while (o) {
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delete o;
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o = p;
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if (o) p = o->next;
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}
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}
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void List::Add(Object* o) {
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if (o==0) return;
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if (head==0) {
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head = tail = o;
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length = 1;
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return;
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}
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o->next = head;
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head->prev = o;
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head = o;
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length++;
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}
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void List::Remove(TCHAR* s) {
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if (s==0) return;
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Object* ptr = head;
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while(ptr) {
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if (!wcscmp(s,ptr->Data())) {
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if (ptr->prev) ptr->prev->next = ptr->next;
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if (ptr->next) ptr->next->prev = ptr->prev;
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length--;
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if (ptr==head) head = ptr->next;
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}
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ptr = ptr->next;
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}
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}
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Object* List::Find(TCHAR* s) {
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Object* ptr = head;
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if (s==0) return 0;
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while (ptr!=0) {
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if (wcscmp(ptr->Data(),s)==0) return ptr;
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ptr = ptr->next;
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}
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return 0;
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}
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Object* List::Find(Object* o) {
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Object* ptr = head;
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if (o==0) return 0;
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while (ptr!=0) {
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if (wcscmp(ptr->Data(),o->Data())==0) return ptr;
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ptr = ptr->next;
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}
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return 0;
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}
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