1 /*
2  * Copyright (c) 2017 Stefan Sperling <stsp@openbsd.org>
3  *
4  * Permission to use, copy, modify, and distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 
17 struct got_zstream_buf {
18 	z_stream z;
19 	char *inbuf;
20 	size_t inlen;
21 	char *outbuf;
22 	size_t outlen;
23 	int flags;
24 #define GOT_ZSTREAM_F_HAVE_MORE 0x01
25 };
26 
27 struct got_object_id {
28 	u_int8_t sha1[SHA1_DIGEST_LENGTH];
29 };
30 
31 struct got_blob_object {
32 	FILE *f;
33 	struct got_zstream_buf zb;
34 	size_t hdrlen;
35 };
36 
37 struct got_tree_entry {
38 	SIMPLEQ_ENTRY(got_tree_entry) entry;
39 	mode_t mode;
40 	char *name;
41 	struct got_object_id id;
42 };
43 
44 struct got_tree_object {
45 	int nentries;
46 	SIMPLEQ_HEAD(, got_tree_entry) entries;
47 };
48 
49 struct got_parent_id {
50 	SIMPLEQ_ENTRY(got_parent_id) entry;
51 	struct got_object_id id;
52 };
53 
54 SIMPLEQ_HEAD(got_parent_id_list, got_parent_id);
55 
56 struct got_commit_object {
57 	struct got_object_id tree_id;
58 	unsigned int nparents;
59 	SIMPLEQ_HEAD(, got_parent_id) parent_ids;
60 	char *author;
61 	char *committer;
62 	char *logmsg;
63 };
64 
65 struct got_object {
66 	int type;
67 #define GOT_OBJ_TYPE_COMMIT 	1
68 #define GOT_OBJ_TYPE_TREE	2
69 #define GOT_OBJ_TYPE_BLOB	3
70 
71 	size_t hdrlen;
72 	size_t size;
73 	struct got_object_id id;
74 };
75 
76 struct got_repository;
77 
78 const char * got_object_id_str(struct got_object_id *, char *, size_t);
79 const struct got_error *got_object_open(struct got_object **,
80     struct got_repository *, struct got_object_id *);
81 void got_object_close(struct got_object *);
82 const struct got_error *got_object_commit_open(struct got_commit_object **,
83     struct got_repository *, struct got_object *);
84 void got_object_commit_close(struct got_commit_object *);
85 const struct got_error *got_object_tree_open(struct got_tree_object **,
86     struct got_repository *, struct got_object *);
87 void got_object_tree_close(struct got_tree_object *);
88 const struct got_error *got_object_blob_open(struct got_blob_object **,
89     struct got_repository *, struct got_object *, size_t);
90 void got_object_blob_close(struct got_blob_object *);
91 const struct got_error *got_object_blob_read_block(struct got_blob_object *,
92     size_t *);