libgit2.example.commit source code

1 /*
2  * libgit2 "commit" example - shows how to create a git commit
3  *
4  * Written by the libgit2 contributors
5  *
6  * To the extent possible under law, the author(s) have dedicated all copyright
7  * and related and neighboring rights to this software to the public domain
8  * worldwide. This software is distributed without any warranty.
9  *
10  * You should have received a copy of the CC0 Public Domain Dedication along
11  * with this software. If not, see
12  * <https://creativecommons.org/publicdomain/zero/1.0/>.
13  */
14 /**
15  * This example demonstrates the libgit2 commit APIs to roughly
16  * simulate `git commit` with the commit message argument.
17  *
18  * This does not have:
19  *
20  * - Robust error handling
21  * - Most of the `git commit` options
22  *
23  * This does have:
24  *
25  * - Example of performing a git commit with a comment
26  *
27  * License: $(LINK2 https://creativecommons.org/publicdomain/zero/1.0/, CC0 1.0 Universal)
28  */
29 module libgit2.example.commit;
30 
31 
32 private static import core.stdc.stdio;
33 private static import core.stdc.string;
34 private static import libgit2.commit;
35 private static import libgit2.errors;
36 private static import libgit2.example.common;
37 private static import libgit2.index;
38 private static import libgit2.object;
39 private static import libgit2.oid;
40 private static import libgit2.refs;
41 private static import libgit2.repository;
42 private static import libgit2.revparse;
43 private static import libgit2.signature;
44 private static import libgit2.tree;
45 private static import libgit2.types;
46 
47 extern (C)
48 nothrow @nogc
49 public int lg2_commit(libgit2.types.git_repository* repo, int argc, char** argv)
50 
51 	do
52 	{
53 		const (char)* opt = argv[1];
54 		const (char)* comment = argv[2];
55 
56 		/* Validate args */
57 		if ((argc < 3) || (core.stdc..string.strcmp(opt, "-m") != 0)) {
58 			core.stdc.stdio.printf("USAGE: %s -m <comment>\n", argv[0]);
59 
60 			return -1;
61 		}
62 
63 		libgit2.types.git_object* parent = null;
64 		libgit2.types.git_reference* ref_ = null;
65 		int error = libgit2.revparse.git_revparse_ext(&parent, &ref_, repo, "HEAD");
66 
67 		if (error == libgit2.errors.git_error_code.GIT_ENOTFOUND) {
68 			core.stdc.stdio.printf("HEAD not found. Creating first commit\n");
69 			error = 0;
70 		} else if (error != 0) {
71 			const (libgit2.errors.git_error)* err = libgit2.errors.git_error_last();
72 
73 			if (err) {
74 				core.stdc.stdio.printf("ERROR %d: %s\n", err.klass, err.message);
75 			} else {
76 				core.stdc.stdio.printf("ERROR %d: no detailed info\n", error);
77 			}
78 		}
79 
80 		libgit2.types.git_index* index;
81 		libgit2.example.common.check_lg2(libgit2.repository.git_repository_index(&index, repo), "Could not open repository index", null);
82 		libgit2.oid.git_oid tree_oid;
83 		libgit2.example.common.check_lg2(libgit2.index.git_index_write_tree(&tree_oid, index), "Could not write tree", null);
84 		//;
85 		libgit2.example.common.check_lg2(libgit2.index.git_index_write(index), "Could not write index", null);
86 		//;
87 
88 		libgit2.types.git_tree* tree;
89 		libgit2.example.common.check_lg2(libgit2.tree.git_tree_lookup(&tree, repo, &tree_oid), "Error looking up tree", null);
90 
91 		libgit2.types.git_signature* signature;
92 		libgit2.example.common.check_lg2(libgit2.signature.git_signature_default(&signature, repo), "Error creating signature", null);
93 
94 		libgit2.oid.git_oid commit_oid;
95 		libgit2.example.common.check_lg2(libgit2.commit.git_commit_create_v(&commit_oid, repo, "HEAD", signature, signature, null, comment, tree, (parent) ? (1) : (0), parent), "Error creating commit", null);
96 
97 		libgit2.index.git_index_free(index);
98 		libgit2.signature.git_signature_free(signature);
99 		libgit2.tree.git_tree_free(tree);
100 		libgit2.object.git_object_free(parent);
101 		libgit2.refs.git_reference_free(ref_);
102 
103 		return error;
104 	}