1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82
/*
* Copyright (c) 2018 Stefan Sperling <stsp@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/queue.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <zlib.h>
#include <sha1.h>
#include "got_error.h"
#include "got_repository.h"
#include "got_object.h"
#include "delta.h"
struct got_delta *
got_delta_open(const char *path_packfile, int type, off_t offset,
size_t size)
{
struct got_delta *delta;
delta = calloc(1, sizeof(*delta));
if (delta == NULL)
return NULL;
delta->path_packfile = strdup(path_packfile);
if (delta->path_packfile == NULL) {
free(delta);
return NULL;
}
delta->type = type;
delta->offset = offset;
delta->size = size;
return delta;
}
void
got_delta_close(struct got_delta *delta)
{
free(delta->path_packfile);
free(delta);
}
const struct got_error *
got_delta_chain_get_base_type(int *type, struct got_delta_chain *deltas)
{
struct got_delta *delta;
/* The first delta in the chain should represent the base object. */
delta = SIMPLEQ_FIRST(&deltas->entries);
if (delta->type == GOT_OBJ_TYPE_COMMIT ||
delta->type == GOT_OBJ_TYPE_TREE ||
delta->type == GOT_OBJ_TYPE_BLOB ||
delta->type == GOT_OBJ_TYPE_TAG) {
*type = delta->type;
return NULL;
}
return got_error(GOT_ERR_BAD_DELTA_CHAIN);
}
const struct got_error *got_delta_apply(struct got_delta *delta,
FILE *base_file, FILE *delta_file, FILE *outfile)
{
return got_error(GOT_ERR_NOT_IMPL);
}