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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 *author_signature, *committer_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_from_env(&author_signature, &committer_signature, repo),

"Error creating signature", NULL);

check_lg2(git_commit_create_v(

&commit_oid,

repo,

"HEAD",

author_signature,

committer_signature,

NULL,

comment,

tree,

parent ? 1 : 0, parent), "Error creating commit", NULL);

git_index_free(index);

git_signature_free(author_signature);

git_signature_free(committer_signature);

git_tree_free(tree);

git_object_free(parent);

git_reference_free(ref);

return error;

}