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Update node.h

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xethyrion 2016-12-04 22:10:41 +02:00 committed by GitHub
parent 2ee91f7621
commit 5627bb3992
1 changed files with 149 additions and 8 deletions
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157
include/ipfs/node/node.h
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@ -28,6 +28,7 @@ struct Node
{
unsigned char * data;
unsigned char * encoded;
struct Cid * cached;
int link_ammount;
struct Link * links[];
};
@ -67,7 +68,64 @@ void Free_Link(struct Link * L)
/*====================================================================================
* Node Functions
*===================================================================================*/
//In progress
/*Create_Empty_Node
* Creates an empty node, allocates the required memory
* Returns a fresh new node with no data set in it.
*/
struct Node * Create_Empty_Node()
{
struct Node * N;
N = (struct Node *)malloc(sizeof(struct Node));
return N;
}
/*Node_Set_Data
* Sets the data of a node
* @param Node: The node which you want to set data in.
* @param Data, the data you want to assign to the node
* returns 1 on success 0 on failure
*/
int Node_Set_Data(struct Node * N, unsigned char * Data)
{
if(!N || !Data)
{
return 0;
}
N->encoded = NULL;
N->cached = NULL;
N->data = Data;
return 1;
}
/*Node_Get_Data
* Gets data from a node
* @param Node: = The node you want to get data from. (unsigned char *)
* Returns data of node.
*/
unsigned char * Node_Get_Data(struct Node * N)
{
unsigned char * DATA;
DATA = N->data;
return DATA;
}
/*Node_Copy: Returns a copy of the node you input
* @param Node: The node you want to copy (struct CP_Node *)
* Returns a copy of the node you wanted to copy.
*/
struct Node * Node_Copy(struct Node * CP_Node)
{
struct Node * CN;
CN = (struct Node*) malloc(sizeof(struct Node) + sizeof(struct Link) * 2);
if(CP_Node->link_ammount != 0)
{
for(int i=0; i<CP_Node->link_ammount; i++)
{
CN->links[i] = malloc(sizeof(struct Link));
}
}
memcpy(CN, CP_Node, sizeof(struct Node));
memcpy(CN->links[0],CP_Node->links[0], sizeof(struct Link));
return CN;
}
/*Node_Delete
* Once you are finished using a node, always delete it using this.
* It will take care of the links inside it.
@ -89,12 +147,12 @@ void Node_Delete(struct Node * N)
* @param Name: (char * name) searches for link with this name
* Returns the link struct if it's found otherwise returns NULL
*/
struct Link * Node_Get_Link(char * Name, struct Node * N)
struct Link * Node_Get_Link(struct Node * N, char * Name)
{
struct Link * L;
for(int i=0;i<N->link_ammount;i++)
{
if(N->links[i]->name==Name)
if(strcmp(N->links[i]->name,Name) == 0)
{
L = (struct Link *)malloc(sizeof(struct Link));
memcpy(L,N->links[i],sizeof(struct Link));
@ -118,7 +176,6 @@ int Node_Remove_Link(char * Name, struct Node * mynode)
{
if(mynode->links[i]->name == Name)
{
printf("FOUND THIS GUY: %s\n", mynode->links[i]->name);
for(int x=i;x<mynode->link_ammount && x+1 != mynode->link_ammount;i++)
{
memcpy(mynode->links[x],mynode->links[x+1],sizeof(struct Link));
@ -166,18 +223,29 @@ struct Node * N_Add_Link(struct Node ** mynode, struct Link * mylink, size_t lin
* @param linksize: sizeof(the link in mylink) (size_T)
* Returns a fresh new node with the link you specified. Has to be freed with Node_Free preferably.
*/
struct Node * N_Create_From_Link(struct Link * mylink, size_t linksize)
struct Node * N_Create_From_Link(struct Link * mylink)
{
struct Node * mynode;
mynode = (struct Node *) malloc(sizeof(struct Node) + linksize);
mynode = (struct Node *) malloc(sizeof(struct Node) + sizeof(struct Link));
mynode->link_ammount = 0;
mynode->link_ammount++;
mynode->links[0] = malloc(sizeof(struct Link));
memcpy(mynode->links[0], mylink, sizeof(struct Link));
return mynode;
}
//Finished
/*N_Create_From_Data
* @param data: bytes buffer you want to create the node from
* returns a node with the data you inputted.
*/
struct Node * N_Create_From_Data(unsigned char * data)
{
struct Node * mynode;
mynode = (struct Node *) malloc(sizeof(struct Node));
mynode->data = data;
return mynode;
}
/*Node_Resolve_Max_Size
* !!!This shouldn't concern you!
*Gets the ammount of words that will be returned by Node_Resolve
*@Param1: The string that will be processed (eg: char * sentence = "foo/bar/bin")
*Returns either -1 if something went wrong or the ammount of words that would be processed.
@ -204,6 +272,7 @@ int Node_Resolve_Max_Size(char * input1)
}
/*Node_Resolve Basically stores everything in a pointer array eg: char * bla[Max_Words_]
* !!!This shouldn't concern you!!!
*@param1: Pointer array(char * foo[x], X=Whatever ammount there is. should be used with the helper function Node_Resolve_Max_Size)
*@param2: Sentence to gather words/paths from (Eg: char * meh = "foo/bar/bin")
*@Returns 1 or 0, 0 if something went wrong, 1 if everything went smoothly.
@ -233,12 +302,84 @@ int Node_Resolve(char ** result, char * input1)
}
return 1;
}
/**************************************************************************************************************************************
*|||||||||||||||||||||||||||||||||||||||| !!!! IMPORTANT !!! ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||*
**************************************************************************************************************************************
* Not sure where this is used, I'm making something to easen it up for all of you.
* This in itself will get all the links for you in a link[] array inside Link_Proc
* the memory allocation for storage will be noted in the ammount of links.
* After being done with this, you have to free the array for which you will have a function specially made for you.
*
* What this does:
* It searches for links using a path like /foo/bar/bin/, if links with those names are found in the node you specify, it stores them
* in a custom struct, Link_Proc; which is what Node_Resolve_Link returns.
* Notes:
* Use it, free it, it's all already laid out for you.
* There will also be a tutorial demonstrating it in the same folder here so everyone can understand this.
*/
struct Link_Proc
{
char * remaining_links; // Not your concern.
int ammount; //This will store the ammount of links, so you know what to process.
struct Link * links[]; // Link array
};
/*Node_Resolve_Links
* Processes a path returning all links.
* @param N: The node you want to get links from
* @param path: The "foo/bar/bin" path
*/
struct Link_Proc * Node_Resolve_Links(struct Node * N, char * path)
{
if(!N || !path)
{
return NULL;
}
int expected_link_ammount = Node_Resolve_Max_Size(path);
struct Link_Proc * LProc = (struct Link_Proc *) malloc(sizeof(struct Link_Proc) + sizeof(struct Link) * expected_link_ammount);
LProc->ammount = 0;
char * linknames[expected_link_ammount];
Node_Resolve(linknames, path);
for(int i=0;i<expected_link_ammount; i++)
{
struct Link * proclink;
proclink = Node_Get_Link(N, linknames[i]);
if(proclink)
{
LProc->links[i] = (struct Link *)malloc(sizeof(struct Link));
memcpy(LProc->links[i], proclink, sizeof(struct Link));
LProc->ammount++;
free(proclink);
}
}
//Freeing pointer array
for(int i=0;i<expected_link_ammount; i++)
{
free(linknames[i]);
}
return LProc;
}
/*Free_link_Proc
* frees the Link_Proc struct you created.
* @param1: Link_Proc struct (struct Link_Proc *)
*/
void Free_Link_Proc(struct Link_Proc * LPRC)
{
if(LPRC->ammount != 0)
{
for(int i=0;i<LPRC->ammount;i++)
{
Free_Link(LPRC->links[i]);
}
}
free(LPRC);
}
/*Node_Tree() Basically a unix-like ls
*@Param1: Result char * foo[strlen(sentence)]
*@Param2: char sentence[] = foo/bar/bin/whatever
*Return: 0 if failure, 1 if success
*/
int Node_Tree(char * result, char * input1)
int Node_Tree(char * result, char * input1) //I don't know where you use this but here it is.
{
if(!input1)
{