1 /*
2 * libgit2 "rev-list" example - shows how to transform a rev-spec into a list
3 * of commit ids
4 *
5 * Written by the libgit2 contributors
6 *
7 * To the extent possible under law, the author(s) have dedicated all copyright
8 * and related and neighboring rights to this software to the public domain
9 * worldwide. This software is distributed without any warranty.
10 *
11 * You should have received a copy of the CC0 Public Domain Dedication along
12 * with this software. If not, see
13 * <http://creativecommons.org/publicdomain/zero/1.0/>.
14 */
15
16 #include "common.h"
17
18 static int revwalk_parseopts(git_repository *repo, git_revwalk *walk, int nopts, char **opts);
19
main(int argc,char ** argv)20 int main (int argc, char **argv)
21 {
22 git_repository *repo;
23 git_revwalk *walk;
24 git_oid oid;
25 char buf[GIT_OID_HEXSZ+1];
26
27 git_libgit2_init();
28
29 check_lg2(git_repository_open_ext(&repo, ".", 0, NULL), "opening repository", NULL);
30 check_lg2(git_revwalk_new(&walk, repo), "allocating revwalk", NULL);
31 check_lg2(revwalk_parseopts(repo, walk, argc-1, argv+1), "parsing options", NULL);
32
33 while (!git_revwalk_next(&oid, walk)) {
34 git_oid_fmt(buf, &oid);
35 buf[GIT_OID_HEXSZ] = '\0';
36 printf("%s\n", buf);
37 }
38
39 git_libgit2_shutdown();
40 return 0;
41 }
42
push_commit(git_revwalk * walk,const git_oid * oid,int hide)43 static int push_commit(git_revwalk *walk, const git_oid *oid, int hide)
44 {
45 if (hide)
46 return git_revwalk_hide(walk, oid);
47 else
48 return git_revwalk_push(walk, oid);
49 }
50
push_spec(git_repository * repo,git_revwalk * walk,const char * spec,int hide)51 static int push_spec(git_repository *repo, git_revwalk *walk, const char *spec, int hide)
52 {
53 int error;
54 git_object *obj;
55
56 if ((error = git_revparse_single(&obj, repo, spec)) < 0)
57 return error;
58
59 error = push_commit(walk, git_object_id(obj), hide);
60 git_object_free(obj);
61 return error;
62 }
63
push_range(git_repository * repo,git_revwalk * walk,const char * range,int hide)64 static int push_range(git_repository *repo, git_revwalk *walk, const char *range, int hide)
65 {
66 git_revspec revspec;
67 int error = 0;
68
69 if ((error = git_revparse(&revspec, repo, range)))
70 return error;
71
72 if (revspec.flags & GIT_REVPARSE_MERGE_BASE) {
73 /* TODO: support "<commit>...<commit>" */
74 return GIT_EINVALIDSPEC;
75 }
76
77 if ((error = push_commit(walk, git_object_id(revspec.from), !hide)))
78 goto out;
79
80 error = push_commit(walk, git_object_id(revspec.to), hide);
81
82 out:
83 git_object_free(revspec.from);
84 git_object_free(revspec.to);
85 return error;
86 }
87
revwalk_parseopts(git_repository * repo,git_revwalk * walk,int nopts,char ** opts)88 static int revwalk_parseopts(git_repository *repo, git_revwalk *walk, int nopts, char **opts)
89 {
90 int hide, i, error;
91 unsigned int sorting = GIT_SORT_NONE;
92
93 hide = 0;
94 for (i = 0; i < nopts; i++) {
95 if (!strcmp(opts[i], "--topo-order")) {
96 sorting = GIT_SORT_TOPOLOGICAL | (sorting & GIT_SORT_REVERSE);
97 git_revwalk_sorting(walk, sorting);
98 } else if (!strcmp(opts[i], "--date-order")) {
99 sorting = GIT_SORT_TIME | (sorting & GIT_SORT_REVERSE);
100 git_revwalk_sorting(walk, sorting);
101 } else if (!strcmp(opts[i], "--reverse")) {
102 sorting = (sorting & ~GIT_SORT_REVERSE)
103 | ((sorting & GIT_SORT_REVERSE) ? 0 : GIT_SORT_REVERSE);
104 git_revwalk_sorting(walk, sorting);
105 } else if (!strcmp(opts[i], "--not")) {
106 hide = !hide;
107 } else if (opts[i][0] == '^') {
108 if ((error = push_spec(repo, walk, opts[i] + 1, !hide)))
109 return error;
110 } else if (strstr(opts[i], "..")) {
111 if ((error = push_range(repo, walk, opts[i], hide)))
112 return error;
113 } else {
114 if ((error = push_spec(repo, walk, opts[i], hide)))
115 return error;
116 }
117 }
118
119 return 0;
120 }
121
122