forked from agorise/c-ipfs
made node links a single linked list instead of array
This will save some complicated memory allocations
This commit is contained in:
jmjatlanta
parent
4fe768c2c5
commit
a36ba20557
5 changed files with 126 additions and 144 deletions
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@ -46,12 +46,12 @@ int main(int argc, char** argv)
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struct Node * Mynode;
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Mynode = N_Create_From_Link(mylink);
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mylink->name = "HAHA";//Testing for valid node creation
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printf("Node Link[0] Name: %s\nHash: %s\n",Mynode->links[0]->name, Mynode->links[0]->Lcid->hash);
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printf("Node Link[0] Name: %s\nHash: %s\n",Mynode->head_link[0]->name, Mynode->head_link[0]->Lcid->hash);
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//N_Add_Link
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Mynode = N_Add_Link(&Mynode, mylink2, sizeof(mylink2));
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mylink2->name = "HAHA";//Testing for valid node creation
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printf("Node Link[1] Name: %s\nHash: %s\n",Mynode->links[1]->name,Mynode->links[1]->Lcid->hash);
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printf("Node Link[1] Name: %s\nHash: %s\n",Mynode->head_link[1]->name,Mynode->head_link[1]->Lcid->hash);
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//Node_Get_Link
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struct Link * ResultLink = Node_Get_Link(Mynode, "Simo");
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@ -74,7 +74,7 @@ int main(int argc, char** argv)
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//Node Copy
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struct Node * Node2;
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Node2 = Node_Copy(Mynode);
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printf("NODE COPY TEST: [0]: %s\n", Node2->links[0]->Lcid->hash);
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printf("NODE COPY TEST: [0]: %s\n", Node2->head_link[0]->Lcid->hash);
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Node_Delete(Node2);
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//Node_Set_Data
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@ -17,6 +17,7 @@ struct NodeLink
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{
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char* name;
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struct Cid * cid;
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struct NodeLink* next;
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};
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struct Node
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@ -25,8 +26,7 @@ struct Node
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size_t data_size;
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unsigned char* encoded;
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struct Cid* cached;
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int link_amount;
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struct NodeLink* links[];
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struct NodeLink* head_link;
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};
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/*====================================================================================
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@ -123,12 +123,6 @@ int ipfs_node_set_encoded(struct Node * N, unsigned char * Data);
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*/
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unsigned char * ipfs_node_get_data(struct Node * N);
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/*ipfs_node_copy: Returns a copy of the node you input
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* @param Node: The node you want to copy (struct CP_Node *)
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* Returns a copy of the node you wanted to copy.
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*/
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struct Node * ipfs_node_copy(struct Node * CP_Node);
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/*ipfs_node_free
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* Once you are finished using a node, always delete it using this.
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* It will take care of the links inside it.
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@ -157,7 +151,7 @@ int ipfs_node_remove_link_by_name(char * Name, struct Node * mynode);
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* @param linksz: sizeof(your cid here)
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* Returns your node with the newly added link
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*/
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struct Node * ipfs_node_add_link(struct Node ** mynode, struct NodeLink * mylink, size_t linksz);
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int ipfs_node_add_link(struct Node * mynode, struct NodeLink * mylink);
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/*ipfs_node_new_from_link
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* Create a node from a link
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174
node/node.c
174
node/node.c
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@ -30,6 +30,7 @@ int ipfs_node_link_new(char * name, unsigned char * ahash, struct NodeLink** nod
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if (*node_link == NULL)
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return 0;
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(*node_link)->name = name;
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(*node_link)->next = NULL;
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int ver = 0;
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size_t lenhash = strlen((char*)ahash);
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if (ipfs_cid_new(ver, ahash, lenhash, CID_PROTOBUF, &(*node_link)->cid) == 0) {
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@ -81,6 +82,7 @@ int ipfs_node_link_protobuf_decode(unsigned char* buffer, size_t buffer_length,
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*link = (struct NodeLink*)malloc(sizeof(struct NodeLink));
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(*link)->cid = NULL;
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(*link)->name = NULL;
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(*link)->next = NULL;
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unsigned char* temp_buffer = NULL;
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size_t temp_size;
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@ -139,8 +141,10 @@ size_t ipfs_node_protobuf_encode_size(struct Node* node) {
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size += 11 + ipfs_cid_protobuf_encode_size(node->cached);
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// links
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size += 11;
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for(int i = 0; i < node->link_amount; i++) {
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size += 11 + strlen(node->links[i]->name) + ipfs_cid_protobuf_encode_size(node->links[i]->cid);
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struct NodeLink* current = node->head_link;
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while(current != NULL) {
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size += 11 + strlen(current->name) + ipfs_cid_protobuf_encode_size(current->cid);
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current = current->next;
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}
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return size;
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}
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@ -172,13 +176,15 @@ int ipfs_node_protobuf_encode(struct Node* node, unsigned char* buffer, size_t m
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retVal = protobuf_encode_length_delimited(3, ipfs_node_message_fields[2], cid, cid_size, &buffer[*bytes_written], max_buffer_length - *bytes_written, &bytes_used);
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*bytes_written += bytes_used;
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// links
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for(int i = 0; i < node->link_amount; i++) {
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struct NodeLink* current = node->head_link;
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while(current != NULL) {
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// size + name + cid
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size_t link_buffer_size = 11 + ipfs_node_link_protobuf_encode_size(node->links[i]);
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size_t link_buffer_size = 11 + ipfs_node_link_protobuf_encode_size(current);
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unsigned char link_buffer[link_buffer_size];
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retVal = ipfs_node_link_protobuf_encode(node->links[i], link_buffer, link_buffer_size, &link_buffer_size);
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retVal = ipfs_node_link_protobuf_encode(current, link_buffer, link_buffer_size, &link_buffer_size);
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protobuf_encode_length_delimited(4, ipfs_node_message_fields[3], link_buffer, link_buffer_size, &buffer[*bytes_written], max_buffer_length - *bytes_written, &bytes_used);
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*bytes_written += bytes_used;
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current = current->next;
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}
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return 1;
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@ -243,9 +249,7 @@ int ipfs_node_protobuf_decode(unsigned char* buffer, size_t buffer_length, struc
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goto exit;
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free(temp_buffer);
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temp_buffer = NULL;
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*node = ipfs_node_add_link(node, temp_link, sizeof(temp_link));
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ipfs_node_link_free(temp_link);
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temp_link = NULL;
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ipfs_node_add_link(*node, temp_link);
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break;
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}
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}
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@ -256,8 +260,6 @@ exit:
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if (retVal == 0) {
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ipfs_node_free(*node);
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}
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if (temp_link != NULL)
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ipfs_node_link_free(temp_link);
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if (temp_buffer != NULL)
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free(temp_buffer);
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@ -279,7 +281,7 @@ int ipfs_node_new(struct Node** node)
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(*node)->cached = NULL;
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(*node)->data = NULL;
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(*node)->encoded = NULL;
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(*node)->link_amount = 0;
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(*node)->head_link = NULL;
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return 1;
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}
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@ -349,25 +351,39 @@ unsigned char * ipfs_node_get_data(struct Node * N)
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return DATA;
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}
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/*ipfs_node_copy: Returns a copy of the node you input
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* @param Node: The node you want to copy (struct CP_Node *)
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* Returns a copy of the node you wanted to copy.
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*/
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struct Node * ipfs_node_copy(struct Node * CP_Node)
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{
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struct Node * CN;
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CN = (struct Node*) malloc(sizeof(struct Node) + sizeof(struct NodeLink) * 2);
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if(CP_Node->link_amount != 0)
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{
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for(int i=0; i<CP_Node->link_amount; i++)
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{
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CN->links[i] = malloc(sizeof(struct NodeLink));
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}
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struct NodeLink* ipfs_node_link_last(struct Node* node) {
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struct NodeLink* current = node->head_link;
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while(current != NULL) {
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if (current->next == NULL)
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break;
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current = current->next;
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}
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memcpy(CN, CP_Node, sizeof(struct Node));
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memcpy(CN->links[0],CP_Node->links[0], sizeof(struct NodeLink));
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return CN;
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return current;
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}
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int ipfs_node_remove_link(struct Node* node, struct NodeLink* toRemove) {
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struct NodeLink* current = node->head_link;
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struct NodeLink* previous = NULL;
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while(current != NULL && current != toRemove) {
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previous = current;
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current = current->next;
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}
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if (current != NULL) {
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if (previous == NULL) {
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// we're trying to delete the head
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previous = current->next;
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ipfs_node_link_free(current);
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node->head_link = previous;
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} else {
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// we're in the middle or end
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previous = current->next;
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ipfs_node_link_free(current);
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}
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return 1;
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}
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return 0;
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}
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/*ipfs_node_free
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* Once you are finished using a node, always delete it using this.
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* It will take care of the links inside it.
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@ -375,14 +391,13 @@ struct Node * ipfs_node_copy(struct Node * CP_Node)
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*/
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void ipfs_node_free(struct Node * N)
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{
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if(N)
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if(N != NULL)
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{
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if(N->link_amount > 0)
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{
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for(int i=0; i<N->link_amount; i++)
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{
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free(N->links[i]);
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}
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struct NodeLink* current = ipfs_node_link_last(N);
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while (current != NULL) {
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struct NodeLink* toDelete = current;
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current = current->next;
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ipfs_node_remove_link(N, toDelete);
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}
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if(N->cached)
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{
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@ -394,6 +409,7 @@ void ipfs_node_free(struct Node * N)
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free(N);
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}
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}
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/*ipfs_node_get_link_by_name
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* Returns a copy of the link with given name
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* @param Name: (char * name) searches for link with this name
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@ -401,22 +417,13 @@ void ipfs_node_free(struct Node * N)
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*/
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struct NodeLink * ipfs_node_get_link_by_name(struct Node * N, char * Name)
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{
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struct NodeLink * L;
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for(int i=0;i<N->link_amount;i++)
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{
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if(strcmp(N->links[i]->name,Name) == 0)
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{
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L = (struct NodeLink *)malloc(sizeof(struct NodeLink));
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memcpy(L,N->links[i],sizeof(struct NodeLink));
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int ver = L->cid->version;
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unsigned char * ahash = L->cid->hash;
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size_t lenhash = L->cid->hash_length;
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ipfs_cid_new(ver, ahash, lenhash, CID_PROTOBUF, &L->cid);
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return L;
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}
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struct NodeLink* current = N->head_link;
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while(current != NULL && strcmp(Name, current->name) != 0) {
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current = current->next;
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}
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return NULL;
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return current;
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}
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/*ipfs_node_remove_link_by_name
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* Removes a link from node if found by name.
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* @param name: Name of link (char * name)
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@ -424,21 +431,32 @@ struct NodeLink * ipfs_node_get_link_by_name(struct Node * N, char * Name)
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*/
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int ipfs_node_remove_link_by_name(char * Name, struct Node * mynode)
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{
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for(int i=0; i<mynode->link_amount; i++)
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{
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if(mynode->links[i]->name == Name)
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{
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for(int x=i;x<mynode->link_amount && x+1 != mynode->link_amount;i++)
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{
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memcpy(mynode->links[x],mynode->links[x+1],sizeof(struct NodeLink));
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}
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free(mynode->links[mynode->link_amount-1]);
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mynode->link_amount--;
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return 1;
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struct NodeLink* current = mynode->head_link;
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struct NodeLink* previous = NULL;
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while( (current != NULL)
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&& (( Name == NULL && current->name != NULL )
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|| ( Name != NULL && current->name == NULL )
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|| ( Name != NULL && current->name != NULL && strcmp(Name, current->name) != 0) ) ) {
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previous = current;
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current = current->next;
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}
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if (current != NULL) {
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// we found it
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if (previous == NULL) {
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// we're first, use the next one (if there is one)
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if (current->next != NULL)
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mynode->head_link = current->next;
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} else {
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// we're somewhere in the middle, remove me from the list
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previous->next = current->next;
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ipfs_node_link_free(current);
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}
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return 1;
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}
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return 0;
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}
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/* ipfs_node_add_link
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* Adds a link to your nodse
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* @param mynode: &yournode
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@ -446,27 +464,22 @@ int ipfs_node_remove_link_by_name(char * Name, struct Node * mynode)
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* @param linksz: sizeof(your cid here)
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* Returns your node with the newly added link
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*/
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struct Node * ipfs_node_add_link(struct Node ** mynode, struct NodeLink * mylink, size_t linksz)
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int ipfs_node_add_link(struct Node* Nl, struct NodeLink * mylink)
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{
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struct Node * Nl = *mynode;
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Nl->link_amount++;
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size_t calculatesize = 0;
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if(Nl->link_amount != 0)
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{
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for(int i=0; i<Nl->link_amount-1;i++)
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{
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calculatesize = calculatesize + sizeof(Nl->links[i]);
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if(Nl->head_link != NULL) {
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// add to existing by finding last one
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struct NodeLink* current_end = Nl->head_link;
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while(current_end->next != NULL) {
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current_end = current_end->next;
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}
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calculatesize = calculatesize + linksz;
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Nl = (struct Node *) realloc(Nl, sizeof(struct Node) + calculatesize);
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// now we have the last one, add to it
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current_end->next = mylink;
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}
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else
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{
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Nl = (struct Node *) malloc(sizeof(struct Node) + linksz);
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Nl->head_link = mylink;
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}
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Nl->links[Nl->link_amount-1] = malloc(sizeof(struct NodeLink));
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memcpy(Nl->links[Nl->link_amount-1],mylink,sizeof(struct NodeLink));
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return Nl;
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return 1;
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}
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/*ipfs_node_new_from_link
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@ -477,16 +490,11 @@ struct Node * ipfs_node_add_link(struct Node ** mynode, struct NodeLink * mylink
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*/
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int ipfs_node_new_from_link(struct NodeLink * mylink, struct Node** node)
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{
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*node = (struct Node *) malloc(sizeof(struct Node) + sizeof(struct NodeLink));
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*node = (struct Node *) malloc(sizeof(struct Node));
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if (*node == NULL)
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return 0;
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(*node)->link_amount = 1;
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(*node)->links[0] = malloc(sizeof(struct NodeLink));
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if ((*node)->links[0] == NULL) {
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free(*node);
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return 0;
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}
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memcpy((*node)->links[0], mylink, sizeof(struct NodeLink));
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(*node)->head_link = NULL;
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ipfs_node_add_link(*node, mylink);
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(*node)->cached = NULL;
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(*node)->data = NULL;
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(*node)->encoded = NULL;
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@ -225,23 +225,20 @@ int test_merkledag_add_node_with_links() {
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return 0;
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}
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if (node2->link_amount != node1->link_amount) {
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printf("Link amount %d does not match %d\n", node2->link_amount, node1->link_amount);
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ipfs_repo_fsrepo_free(fs_repo);
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ipfs_node_free(node1);
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ipfs_node_free(node2);
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return 0;
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}
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// make sure hashes match
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for(int i = 0; i < node1->links[0]->cid->hash_length; i++) {
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if(node1->links[0]->cid->hash[i] != node2->links[0]->cid->hash[i]) {
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printf("Hashes do not match\n");
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ipfs_repo_fsrepo_free(fs_repo);
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ipfs_node_free(node1);
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ipfs_node_free(node2);
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return 0;
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struct NodeLink* node1_link = node1->head_link;
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struct NodeLink* node2_link = node2->head_link;
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while(node1_link != NULL) {
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for(int i = 0; i < node1_link->cid->hash_length; i++) {
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if(node1_link->cid->hash[i] != node2_link->cid->hash[i]) {
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printf("Hashes do not match for node %s\n", node1_link->name);
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ipfs_repo_fsrepo_free(fs_repo);
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ipfs_node_free(node1);
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ipfs_node_free(node2);
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return 0;
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}
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}
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node1_link = node1_link->next;
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node2_link = node2_link->next;
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}
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ipfs_node_free(node1);
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@ -3,39 +3,24 @@
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int test_node() {
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//Variables of link:
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char * name = "Alex";
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unsigned char * ahash = "QmYwAPJzv5CZsnA625s3Xf2nemtYgPpHdWEz79ojWnPbdG";
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unsigned char * ahash = (unsigned char*)"QmYwAPJzv5CZsnA625s3Xf2nemtYgPpHdWEz79ojWnPbdG";
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struct NodeLink * mylink;
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int retVal = ipfs_node_link_new(name,ahash, &mylink);
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printf("===================================\n" \
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"Node Link:\n" \
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" -Name: %s\n" \
|
||||
"\n Cid Details:\n\n" \
|
||||
" -Version: %d\n" \
|
||||
" -Codec: %c\n" \
|
||||
" -Hash: %s\n" \
|
||||
" -Hash Length: %lu\n" \
|
||||
"====================================\n" \
|
||||
, mylink->name, mylink->cid->version,mylink->cid->codec,mylink->cid->hash,mylink->cid->hash_length);
|
||||
|
||||
//Link Two for testing purposes
|
||||
char * name2 = "Simo";
|
||||
unsigned char * ahash2 = "QmYwAPJzv5CZsnA625s3Xf2nemtYgPpHdWEz79ojWnSimo";
|
||||
unsigned char * ahash2 = (unsigned char*)"QmYwAPJzv5CZsnA625s3Xf2nemtYgPpHdWEz79ojWnSimo";
|
||||
struct NodeLink * mylink2;
|
||||
retVal = ipfs_node_link_new(name2, ahash2, &mylink2);
|
||||
|
||||
//Nodes
|
||||
struct Node * Mynode;
|
||||
retVal = ipfs_node_new_from_link(mylink, &Mynode);
|
||||
mylink->name = "HAHA";//Testing for valid node creation
|
||||
printf("Node Link[0] Name: %s\nHash: %s\n",Mynode->links[0]->name, Mynode->links[0]->cid->hash);
|
||||
Mynode = ipfs_node_add_link(&Mynode, mylink2, sizeof(mylink2));
|
||||
mylink2->name = "HAHA";//Testing for valid node creation
|
||||
printf("Node Link[1] Name: %s\nHash: %s\n",Mynode->links[1]->name,Mynode->links[1]->cid->hash);
|
||||
//mylink->name = "HAHA";//Testing for valid node creation
|
||||
retVal = ipfs_node_add_link(Mynode, mylink2);
|
||||
//mylink2->name = "HAHA";//Testing for valid node creation
|
||||
struct NodeLink * ResultLink = ipfs_node_get_link_by_name(Mynode, "Simo");
|
||||
printf("\nResultLink: \nName: %s\nHash: %s\n", ResultLink->name, ResultLink->cid->hash);
|
||||
ipfs_node_remove_link_by_name("Simo", Mynode);
|
||||
printf("Outlinkamt: %d\n", Mynode->link_amount);
|
||||
ipfs_node_link_free(mylink);
|
||||
ipfs_node_link_free(mylink2);
|
||||
ipfs_node_link_free(ResultLink);
|
||||
ipfs_node_free(Mynode);
|
||||
return 1;
|
||||
}
|
||||
|
|
@ -121,13 +106,13 @@ int test_node_encode_decode() {
|
|||
if (ipfs_node_link_new((char*)"Link1", (unsigned char*)"QmLink1", &link1) == 0)
|
||||
goto exit;
|
||||
|
||||
if ( (control = ipfs_node_add_link(&control, link1, sizeof(link1))) == NULL)
|
||||
if ( ipfs_node_add_link(control, link1) == 0)
|
||||
goto exit;
|
||||
|
||||
// second link
|
||||
if (ipfs_node_link_new((char*)"Link2", (unsigned char*)"QmLink2", &link2) == 0)
|
||||
goto exit;
|
||||
if ( (control = ipfs_node_add_link(&control, link2, sizeof(link2))) == NULL)
|
||||
if ( ipfs_node_add_link(control, link2) == 0)
|
||||
goto exit;
|
||||
|
||||
// encode
|
||||
|
|
@ -141,14 +126,16 @@ int test_node_encode_decode() {
|
|||
goto exit;
|
||||
|
||||
// compare results
|
||||
if (control->link_amount != results->link_amount || control->link_amount != 2)
|
||||
goto exit;
|
||||
|
||||
for(int i = 0; i < control->link_amount; i++) {
|
||||
if (compare_link(control->links[i], results->links[i]) == 0) {
|
||||
printf("Error was on link %d\n", i);
|
||||
struct NodeLink* control_link = control->head_link;
|
||||
struct NodeLink* results_link = results->head_link;
|
||||
while(control_link != NULL) {
|
||||
if (compare_link(control_link, results_link) == 0) {
|
||||
printf("Error was on link %s\n", control_link->name);
|
||||
goto exit;
|
||||
}
|
||||
control_link = control_link->next;
|
||||
results_link = results_link->next;
|
||||
}
|
||||
|
||||
if (control->data_size != results->data_size)
|
||||
|
|
@ -165,10 +152,6 @@ exit:
|
|||
ipfs_node_free(control);
|
||||
if (results != NULL)
|
||||
ipfs_node_free(results);
|
||||
if (link1 != NULL)
|
||||
ipfs_node_link_free(link1);
|
||||
if (link2 != NULL)
|
||||
ipfs_node_link_free(link2);
|
||||
if (buffer != NULL)
|
||||
free(buffer);
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue