Added link support

[smdp.git] / src / url.c

diff --git a/src/url.c b/src/url.c
new file mode 100644 (file)
index 0000000..7ccfa10
--- /dev/null
+++ b/src/url.c
@@ -0,0 +1,141 @@
+#include <stdlib.h>
+#include <assert.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "url.h"
+
+typedef struct Url {
+       char * link_name;
+       char * target;
+       int x;
+       int y;
+       struct Url * next;
+} Url_t;
+
+static void url_del_elem(Url_t * elem);
+static void url_print(Url_t * u);
+
+static Url_t *list;
+static int index_max;
+static int init_ok;
+
+void url_init(void) {
+       list = NULL;
+       index_max = 0;
+       init_ok = 1;
+}
+
+int url_add(const char * link_name, int link_name_length, const char * target, int target_length, int x, int y) {
+       if (!init_ok) return -1;
+       
+       Url_t *tmp = NULL;
+       int i = 0;
+       
+       if (list) {
+               tmp = list;
+               while (tmp->next) {
+                       tmp = tmp->next;
+                       i++;
+               }
+               tmp->next = malloc(sizeof(Url_t));
+               assert(tmp->next);
+               tmp = tmp->next;
+       } else {
+               list = malloc(sizeof(Url_t));
+               tmp = list;
+               assert(tmp);
+       }
+       
+       tmp -> link_name = calloc(link_name_length, sizeof(char));
+       assert(tmp->link_name);
+       strncpy(tmp->link_name, link_name, link_name_length);
+       
+       tmp->target = calloc(target_length, sizeof(char));
+       assert(tmp->target);
+       strncpy(tmp->target, target, target_length);
+       
+       tmp->x = x;
+       tmp->y = y;
+       tmp->next = NULL;
+       
+       index_max++;
+       
+       return index_max-1;
+}
+
+
+char * url_get_target(int index) {
+       Url_t * tmp = list;
+       
+       while (index > 0 && tmp && tmp->next) {
+               tmp = tmp->next;
+               index --;
+       }
+       
+       if (!index) {
+               return tmp->target;
+       } else return NULL; 
+}
+
+char * url_get_name(int index) {
+       Url_t * tmp = list;
+       
+       while (index > 0 && tmp && tmp->next) {
+               tmp = tmp->next;
+               index --;
+       }
+       
+       if (!index) {
+               return tmp->link_name;
+       } else return NULL; 
+}
+
+void url_purge() {
+       url_del_elem(list);
+       list = NULL;
+       index_max = 0;
+       init_ok = 0;
+}
+
+static void url_del_elem(Url_t *elem) {
+       if (!elem) return;
+       
+       if (elem->next) {
+               url_del_elem(elem->next);
+               elem->next = NULL;
+       }
+       
+       if (elem->target) {
+               free(elem->target);
+               elem->target = NULL;
+       }
+       
+       if (elem->link_name) {
+               free(elem->link_name);
+               elem->link_name = NULL;
+       }
+       
+       free(elem);
+}
+
+void url_dump(void) {
+       if (!list) return;
+       
+       Url_t *tmp = list;
+       
+       while (tmp) {
+               url_print(tmp);
+               if (tmp->next)
+                       tmp = tmp->next;
+               else break;
+       }
+}
+
+static void url_print(Url_t * u) {
+       printf("Url_t @ %p\n", u);
+}
+
+int url_get_amount(void) {
+       return index_max;
+}