git-diff-cache: add "-m" flag to match all non-checked-out files with the index.
[git/git.git] / export.c
CommitLineData
c9823a42
LT
1#include "cache.h"
2#include "commit.h"
3
4/*
5 * Show one commit
6 */
7void show_commit(struct commit *commit)
8{
9 char cmdline[400];
10 char hex[100];
11
12 strcpy(hex, sha1_to_hex(commit->object.sha1));
13 printf("Id: %s\n", hex);
14 fflush(NULL);
bab5583a 15 sprintf(cmdline, "git-cat-file commit %s", hex);
c9823a42
LT
16 system(cmdline);
17 if (commit->parents) {
18 char *against = sha1_to_hex(commit->parents->item->object.sha1);
19 printf("\n\n======== diff against %s ========\n", against);
20 fflush(NULL);
aed7a5a9 21 sprintf(cmdline, "git-diff-tree -p %s %s", against, hex);
c9823a42
LT
22 system(cmdline);
23 }
24 printf("======== end ========\n\n");
25}
26
27/*
28 * Show all unseen commits, depth-first
29 */
30void show_unseen(struct commit *top)
31{
32 struct commit_list *parents;
33
34 if (top->object.flags & 2)
35 return;
36 top->object.flags |= 2;
37 parents = top->parents;
38 while (parents) {
39 show_unseen(parents->item);
40 parents = parents->next;
41 }
42 show_commit(top);
43}
44
45void export(struct commit *top, struct commit *base)
46{
47 mark_reachable(&top->object, 1);
48 if (base)
49 mark_reachable(&base->object, 2);
50 show_unseen(top);
51}
52
53struct commit *get_commit(unsigned char *sha1)
54{
55 struct commit *commit = lookup_commit(sha1);
56 if (!commit->object.parsed) {
57 struct commit_list *parents;
58
59 if (parse_commit(commit) < 0)
60 die("unable to parse commit %s", sha1_to_hex(sha1));
61 parents = commit->parents;
62 while (parents) {
63 get_commit(parents->item->object.sha1);
64 parents = parents->next;
65 }
66 }
67 return commit;
68}
69
70int main(int argc, char **argv)
71{
72 unsigned char base_sha1[20];
73 unsigned char top_sha1[20];
74
75 if (argc < 2 || argc > 4 ||
3c249c95
LT
76 get_sha1(argv[1], top_sha1) ||
77 (argc == 3 && get_sha1(argv[2], base_sha1)))
c9823a42
LT
78 usage("git-export top [base]");
79 export(get_commit(top_sha1), argc==3 ? get_commit(base_sha1) : NULL);
80 return 0;
81}