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examples: general: extract function demonstrating commit writing

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This commit is contained in:
Patrick Steinhardt 2016-08-16 09:59:28 +02:00
parent 15960454c5
commit b009adad35
1 changed files with 67 additions and 52 deletions
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119
examples/general.c
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@ -43,6 +43,7 @@
#include <stdio.h>
#include <string.h>
static void commit_writing(git_repository *repo);
static void commit_parsing(git_repository *repo);
static void tag_parsing(git_repository *repo);
static void tree_parsing(git_repository *repo);
@ -175,58 +176,7 @@ int main (int argc, char** argv)
git_oid_fmt(out, &oid);
printf("Written Object: %s\n", out);
// #### Writing Commits
// libgit2 provides a couple of methods to create commit objects easily as
// well. There are four different create signatures, we'll just show one
// of them here. You can read about the other ones in the [commit API
// docs][cd].
//
// [cd]: http://libgit2.github.com/libgit2/#HEAD/group/commit
printf("\n*Commit Writing*\n");
git_oid tree_id, parent_id, commit_id;
git_tree *tree;
git_commit *parent;
const git_signature *author, *cmtter;
// Creating signatures for an authoring identity and time is simple. You
// will need to do this to specify who created a commit and when. Default
// values for the name and email should be found in the `user.name` and
// `user.email` configuration options. See the `config` section of this
// example file to see how to access config values.
git_signature_new((git_signature **)&author,
"Scott Chacon", "schacon@gmail.com", 123456789, 60);
git_signature_new((git_signature **)&cmtter,
"Scott A Chacon", "scott@github.com", 987654321, 90);
// Commit objects need a tree to point to and optionally one or more
// parents. Here we're creating oid objects to create the commit with,
// but you can also use
git_oid_fromstr(&tree_id, "f60079018b664e4e79329a7ef9559c8d9e0378d1");
git_tree_lookup(&tree, repo, &tree_id);
git_oid_fromstr(&parent_id, "5b5b025afb0b4c913b4c338a42934a3863bf3644");
git_commit_lookup(&parent, repo, &parent_id);
// Here we actually create the commit object with a single call with all
// the values we need to create the commit. The SHA key is written to the
// `commit_id` variable here.
git_commit_create_v(
&commit_id, /* out id */
repo,
NULL, /* do not update the HEAD */
author,
cmtter,
NULL, /* use default message encoding */
"example commit",
tree,
1, parent);
// Now we can take a look at the commit SHA we've generated.
git_oid_fmt(out, &commit_id);
printf("New Commit: %s\n", out);
commit_writing(repo);
commit_parsing(repo);
tag_parsing(repo);
tree_parsing(repo);
@ -242,6 +192,71 @@ int main (int argc, char** argv)
return 0;
}
/**
* #### Writing Commits
*
* libgit2 provides a couple of methods to create commit objects easily as
* well. There are four different create signatures, we'll just show one
* of them here. You can read about the other ones in the [commit API
* docs][cd].
*
* [cd]: http://libgit2.github.com/libgit2/#HEAD/group/commit
*/
static void commit_writing(git_repository *repo)
{
git_oid tree_id, parent_id, commit_id;
git_tree *tree;
git_commit *parent;
const git_signature *author, *cmtter;
char oid_hex[GIT_OID_HEXSZ+1] = { 0 };
printf("\n*Commit Writing*\n");
/**
* Creating signatures for an authoring identity and time is simple. You
* will need to do this to specify who created a commit and when. Default
* values for the name and email should be found in the `user.name` and
* `user.email` configuration options. See the `config` section of this
* example file to see how to access config values.
*/
git_signature_new((git_signature **)&author,
"Scott Chacon", "schacon@gmail.com", 123456789, 60);
git_signature_new((git_signature **)&cmtter,
"Scott A Chacon", "scott@github.com", 987654321, 90);
/**
* Commit objects need a tree to point to and optionally one or more
* parents. Here we're creating oid objects to create the commit with,
* but you can also use
*/
git_oid_fromstr(&tree_id, "f60079018b664e4e79329a7ef9559c8d9e0378d1");
git_tree_lookup(&tree, repo, &tree_id);
git_oid_fromstr(&parent_id, "5b5b025afb0b4c913b4c338a42934a3863bf3644");
git_commit_lookup(&parent, repo, &parent_id);
/**
* Here we actually create the commit object with a single call with all
* the values we need to create the commit. The SHA key is written to the
* `commit_id` variable here.
*/
git_commit_create_v(
&commit_id, /* out id */
repo,
NULL, /* do not update the HEAD */
author,
cmtter,
NULL, /* use default message encoding */
"example commit",
tree,
1, parent);
/**
* Now we can take a look at the commit SHA we've generated.
*/
git_oid_fmt(oid_hex, &commit_id);
printf("New Commit: %s\n", oid_hex);
}
/**
* ### Object Parsing
*