libgit2_d.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  * <http://creativecommons.org/publicdomain/zero/1.0/>.
13  */
14 module libgit2_d.example.commit;
15 
16 
17 private static import core.stdc.stdio;
18 private static import core.stdc..string;
19 private static import libgit2_d.commit;
20 private static import libgit2_d.errors;
21 private static import libgit2_d.example.common;
22 private static import libgit2_d.index;
23 private static import libgit2_d.oid;
24 private static import libgit2_d.repository;
25 private static import libgit2_d.revparse;
26 private static import libgit2_d.signature;
27 private static import libgit2_d.tree;
28 private static import libgit2_d.types;
29 
30 package:
31 
32 /**
33  * This example demonstrates the libgit2 commit APIs to roughly
34  * simulate `git commit` with the commit message argument.
35  *
36  * This does not have:
37  *
38  * - Robust error handling
39  * - Most of the `git commit` options
40  *
41  * This does have:
42  *
43  * - Example of performing a git commit with a comment
44  *
45  */
46 extern (C)
47 nothrow @nogc
48 public int lg2_commit(libgit2_d.types.git_repository* repo, int argc, char** argv)
49 
50 	do
51 	{
52 		const (char)* opt = argv[1];
53 		const (char)* comment = argv[2];
54 
55 		/* Validate args */
56 		if ((argc < 3) || (core.stdc..string.strcmp(opt, "-m") != 0)) {
57 			core.stdc.stdio.printf("USAGE: %s -m <comment>\n", argv[0]);
58 
59 			return -1;
60 		}
61 
62 		libgit2_d.types.git_object* parent = null;
63 		libgit2_d.types.git_reference* ref_ = null;
64 		int error = libgit2_d.revparse.git_revparse_ext(&parent, &ref_, repo, "HEAD");
65 
66 		if (error == libgit2_d.errors.git_error_code.GIT_ENOTFOUND) {
67 			core.stdc.stdio.printf("HEAD not found. Creating first commit\n");
68 			error = 0;
69 		} else if (error != 0) {
70 			const (libgit2_d.errors.git_error)* err = libgit2_d.errors.git_error_last();
71 
72 			if (err) {
73 				core.stdc.stdio.printf("ERROR %d: %s\n", err.klass, err.message);
74 			} else {
75 				core.stdc.stdio.printf("ERROR %d: no detailed info\n", error);
76 			}
77 		}
78 
79 		libgit2_d.types.git_index* index;
80 		libgit2_d.example.common.check_lg2(libgit2_d.repository.git_repository_index(&index, repo), "Could not open repository index", null);
81 		libgit2_d.oid.git_oid tree_oid;
82 		libgit2_d.example.common.check_lg2(libgit2_d.index.git_index_write_tree(&tree_oid, index), "Could not write tree", null);
83 		//;
84 		libgit2_d.example.common.check_lg2(libgit2_d.index.git_index_write(index), "Could not write index", null);
85 		//;
86 
87 		libgit2_d.types.git_tree* tree;
88 		libgit2_d.example.common.check_lg2(libgit2_d.tree.git_tree_lookup(&tree, repo, &tree_oid), "Error looking up tree", null);
89 
90 		libgit2_d.types.git_signature* signature;
91 		libgit2_d.example.common.check_lg2(libgit2_d.signature.git_signature_default(&signature, repo), "Error creating signature", null);
92 
93 		libgit2_d.oid.git_oid commit_oid;
94 		libgit2_d.example.common.check_lg2(libgit2_d.commit.git_commit_create_v(&commit_oid, repo, "HEAD", signature, signature, null, comment, tree, (parent) ? (1) : (0), parent), "Error creating commit", null);
95 
96 		libgit2_d.index.git_index_free(index);
97 		libgit2_d.signature.git_signature_free(signature);
98 		libgit2_d.tree.git_tree_free(tree);
99 
100 		return error;
101 	}