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Update blockchain_serialize.c #1

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59 changes: 30 additions & 29 deletions blockchain/v0.1/blockchain_serialize.c
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Original file line number Diff line number Diff line change
Expand Up @@ -7,19 +7,22 @@
* @arg: The file in which the data will be written
* Return: 0 upon success, or -1 upon failure
*/
int write_block(llist_node_t ptr, unsigned int idx, void *arg)
int block_to_file(llist_node_t ptr, unsigned int no, void *file)
{
FILE *fp;
block_t *block = ptr;
UNUSED(idx);
fp = (FILE *)arg;
fwrite((void *)&block->info, sizeof(block->info), 1, fp);
fwrite((void *)&block->data.len, sizeof(block->data.len), 1, fp);
fwrite(block->data.buffer, block->data.len, 1, fp);
fwrite(block->hash, sizeof(block->hash), 1, fp);
return (0);
FILE *fptr;
no = -1;
if (file)
{
fptr=(FILE*)file;
fwrite((void *)&block->info, sizeof(block->info), 1, fptr);
fwrite((void *)&block->data.len, sizeof(block->data.len), 1, fptr);
fwrite(block->data.buffer, block->data.len, 1, fptr);
fwrite(block->hash, sizeof(block->hash), 1, fptr);
return no;
}
return 0;
}

/**
* blockchain_serialize - a function that serializes a Blockchain into a file
* @blockchain: pointer to blockchain to be serialized
Expand All @@ -28,34 +31,32 @@ return (0);
* Return: 0 upon success, or -1 upon failure
*/

int blockchain_serialize(blockchain_t const *blockchain,
char const *path)
int blockchain_serialize(blockchain_t const *blockchain, char const *path)
{
uint8_t hblk_magic[4];
uint8_t hblk_version[3];
uint8_t hblk_endian;
int32_t hblk_blocks;
FILE *fp;
if (!blockchain || !path)
FILE *fptr = fopen(path, "w");
if (!fptr)
return (-1);
if (blockchain && path)
{
hblk_blocks = llist_size(blockchain->chain);
if (hblk_blocks == -1)
return (-1);
memcpy(hblk_magic, "HBLK", 4);
memcpy(hblk_version, "0.1", 3);
hblk_endian = _get_endianness();
hblk_blocks = llist_size(blockchain->chain);
if (hblk_blocks == -1)
return (-1);
fp = fopen(path, "w");
if (!fp)
return (-1);
fwrite(&hblk_magic, sizeof(hblk_magic), 1, fp);
fwrite(&hblk_version, sizeof(hblk_version), 1, fp);
fwrite(&hblk_endian, sizeof(hblk_endian), 1, fp);
fwrite(&hblk_blocks, sizeof(hblk_blocks), 1, fp);
if (llist_for_each(blockchain->chain, write_block, fp) == -1)
fwrite(&hblk_magic, sizeof(hblk_magic), 1, fptr);
fwrite(&hblk_version, sizeof(hblk_version), 1, fptr);
fwrite(&hblk_endian, sizeof(hblk_endian), 1, fptr);
fwrite(&hblk_blocks, sizeof(hblk_blocks), 1, fptr);
if (llist_for_each(blockchain->chain, block_to_file, fptr))
{
fclose(fp);
return (-1);
fclose(fptr);
return 0;
}
fclose(fp);
return (0);
}
fclose(fptr);
return -1;