forked from agorise/c-ipfs
033dd767b4
Blockstore now storing the data, whereas datastore is storing the key and filename. The key should be the multihash (currently the sha256, not the multihash), and the value is the filename (base32).
65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
#include <stdio.h>
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#include "ipfs/importer/importer.h"
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#include "ipfs/merkledag/merkledag.h"
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#define MAX_DATA_SIZE 262144 // 1024 * 256;
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/***
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* Imports OS files into the datastore
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*/
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/**
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* read the next chunk of bytes, create a node, and add a link to the node in the passed-in node
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* @param file the file handle
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* @param node the node to add to
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* @returns number of bytes read
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*/
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size_t ipfs_import_chunk(FILE* file, struct Node* node, struct FSRepo* fs_repo) {
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unsigned char buffer[MAX_DATA_SIZE];
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size_t bytes_read = fread(buffer, 1, MAX_DATA_SIZE, file);
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if (node->data_size == 0) {
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ipfs_node_set_data(node, buffer, bytes_read);
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} else {
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// create a new node, and link to the parent
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struct Node* new_node = NULL;
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ipfs_node_new_from_data(buffer, bytes_read, &new_node);
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// persist
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ipfs_merkledag_add(new_node, fs_repo);
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// put link in node
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struct NodeLink* new_link = NULL;
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ipfs_node_link_new("", new_node->cached->hash, &new_link);
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ipfs_node_add_link(node, new_link);
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ipfs_node_free(new_node);
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}
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if (bytes_read != MAX_DATA_SIZE) {
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// persist the main node
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ipfs_merkledag_add(node, fs_repo);
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}
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return bytes_read;
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}
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/**
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* Creates a node based on an incoming file
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* @param file_name the file to import
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* @param node the root node (could have links to others)
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* @returns true(1) on success
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*/
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int ipfs_import_file(const char* fileName, struct Node** node, struct FSRepo* fs_repo) {
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int retVal = 1;
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int bytes_read = MAX_DATA_SIZE;
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FILE* file = fopen(fileName, "rb");
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retVal = ipfs_node_new(node);
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if (retVal == 0)
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return 0;
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// add all nodes
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while ( bytes_read == MAX_DATA_SIZE) {
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bytes_read = ipfs_import_chunk(file, *node, fs_repo);
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}
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fclose(file);
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return 1;
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}
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