1 files changed, 86 insertions, 0 deletions
diff --git a/examples/commit.c b/examples/commit.c
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+++ b/examples/commit.c
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+/*
+ * libgit2 "commit" example - shows how to create a git commit
+ *
+ * Written by the libgit2 contributors
+ *
+ * To the extent possible under law, the author(s) have dedicated all copyright
+ * and related and neighboring rights to this software to the public domain
+ * worldwide. This software is distributed without any warranty.
+ *
+ * You should have received a copy of the CC0 Public Domain Dedication along
+ * with this software. If not, see
+ * <http://creativecommons.org/publicdomain/zero/1.0/>.
+ */
+
+#include "common.h"
+
+/**
+ * This example demonstrates the libgit2 commit APIs to roughly
+ * simulate `git commit` with the commit message argument.
+ *
+ * This does not have:
+ *
+ * - Robust error handling
+ * - Most of the `git commit` options
+ *
+ * This does have:
+ *
+ * - Example of performing a git commit with a comment
+ *
+ */
+int lg2_commit(git_repository *repo, int argc, char **argv)
+{
+	const char *opt = argv[1];
+	const char *comment = argv[2];
+	int error;
+
+	git_oid commit_oid,tree_oid;
+	git_tree *tree;
+	git_index *index;
+	git_object *parent = NULL;
+	git_reference *ref = NULL;
+	git_signature *signature;
+
+	/* Validate args */
+	if (argc < 3 || strcmp(opt, "-m") != 0) {
+		printf ("USAGE: %s -m <comment>\n", argv[0]);
+		return -1;
+	}
+
+	error = git_revparse_ext(&parent, &ref, repo, "HEAD");
+	if (error == GIT_ENOTFOUND) {
+		printf("HEAD not found. Creating first commit\n");
+		error = 0;
+	} else if (error != 0) {
+		const git_error *err = git_error_last();
+		if (err) printf("ERROR %d: %s\n", err->klass, err->message);
+		else printf("ERROR %d: no detailed info\n", error);
+	}
+
+	check_lg2(git_repository_index(&index, repo), "Could not open repository index", NULL);
+	check_lg2(git_index_write_tree(&tree_oid, index), "Could not write tree", NULL);;
+	check_lg2(git_index_write(index), "Could not write index", NULL);;
+
+	check_lg2(git_tree_lookup(&tree, repo, &tree_oid), "Error looking up tree", NULL);
+
+	check_lg2(git_signature_default(&signature, repo), "Error creating signature", NULL);
+
+	check_lg2(git_commit_create_v(
+		&commit_oid,
+		repo,
+		"HEAD",
+		signature,
+		signature,
+		NULL,
+		comment,
+		tree,
+		parent ? 1 : 0, parent), "Error creating commit", NULL);
+
+	git_index_free(index);
+	git_signature_free(signature);
+	git_tree_free(tree);
+	git_object_free(parent);
+	git_reference_free(ref);
+
+	return error;
+}