RefactorHEADmaster

1 files changed, 188 insertions, 0 deletions

diff --git a/git2d/cmd_commit.c b/git2d/cmd_commit.c
new file mode 100644
index 0000000..3031088
--- /dev/null
+++ b/git2d/cmd_commit.c
@@ -0,0 +1,188 @@
+/*-
+ * SPDX-License-Identifier: AGPL-3.0-only
+ * SPDX-FileCopyrightText: Copyright (c) 2025 Runxi Yu <https://runxiyu.org>
+ */
+
+#include "x.h"
+
+int cmd_commit_tree_oid(git_repository *repo, struct bare_reader *reader, struct bare_writer *writer)
+{
+	char hex[64] = { 0 };
+	if (bare_get_data(reader, (uint8_t *) hex, sizeof(hex) - 1) != BARE_ERROR_NONE) {
+		bare_put_uint(writer, 11);
+		return -1;
+	}
+	git_oid oid;
+	if (git_oid_fromstr(&oid, hex) != 0) {
+		bare_put_uint(writer, 14);
+		return -1;
+	}
+	git_commit *commit = NULL;
+	if (git_commit_lookup(&commit, repo, &oid) != 0) {
+		bare_put_uint(writer, 14);
+		return -1;
+	}
+	git_tree *tree = NULL;
+	if (git_commit_tree(&tree, commit) != 0) {
+		git_commit_free(commit);
+		bare_put_uint(writer, 14);
+		return -1;
+	}
+	const git_oid *toid = git_tree_id(tree);
+	bare_put_uint(writer, 0);
+	bare_put_data(writer, toid->id, GIT_OID_RAWSZ);
+	git_tree_free(tree);
+	git_commit_free(commit);
+	return 0;
+}
+
+int cmd_commit_create(git_repository *repo, struct bare_reader *reader, struct bare_writer *writer)
+{
+	char treehex[64] = { 0 };
+	if (bare_get_data(reader, (uint8_t *) treehex, sizeof(treehex) - 1) != BARE_ERROR_NONE) {
+		bare_put_uint(writer, 11);
+		return -1;
+	}
+	git_oid tree_oid;
+	if (git_oid_fromstr(&tree_oid, treehex) != 0) {
+		bare_put_uint(writer, 15);
+		return -1;
+	}
+	uint64_t pcnt = 0;
+	if (bare_get_uint(reader, &pcnt) != BARE_ERROR_NONE) {
+		bare_put_uint(writer, 11);
+		return -1;
+	}
+	git_commit **parents = NULL;
+	if (pcnt > 0) {
+		parents = (git_commit **) calloc(pcnt, sizeof(git_commit *));
+		if (!parents) {
+			bare_put_uint(writer, 15);
+			return -1;
+		}
+		for (uint64_t i = 0; i < pcnt; i++) {
+			char phex[64] = { 0 };
+			if (bare_get_data(reader, (uint8_t *) phex, sizeof(phex) - 1) != BARE_ERROR_NONE) {
+				bare_put_uint(writer, 11);
+				goto fail;
+			}
+			git_oid poid;
+			if (git_oid_fromstr(&poid, phex) != 0) {
+				bare_put_uint(writer, 15);
+				goto fail;
+			}
+			if (git_commit_lookup(&parents[i], repo, &poid) != 0) {
+				bare_put_uint(writer, 15);
+				goto fail;
+			}
+		}
+	}
+	char aname[512] = { 0 };
+	char aemail[512] = { 0 };
+	if (bare_get_data(reader, (uint8_t *) aname, sizeof(aname) - 1) != BARE_ERROR_NONE) {
+		bare_put_uint(writer, 11);
+		goto fail;
+	}
+	if (bare_get_data(reader, (uint8_t *) aemail, sizeof(aemail) - 1) != BARE_ERROR_NONE) {
+		bare_put_uint(writer, 11);
+		goto fail;
+	}
+	int64_t when = 0;
+	int64_t tzoff = 0;
+	if (bare_get_i64(reader, &when) != BARE_ERROR_NONE) {
+		bare_put_uint(writer, 11);
+		goto fail;
+	}
+	if (bare_get_i64(reader, &tzoff) != BARE_ERROR_NONE) {
+		bare_put_uint(writer, 11);
+		goto fail;
+	}
+	char *message = NULL;
+	{
+		uint64_t msz = 0;
+		if (bare_get_uint(reader, &msz) != BARE_ERROR_NONE) {
+			bare_put_uint(writer, 11);
+			goto fail;
+		}
+		message = (char *)malloc(msz + 1);
+		if (!message) {
+			bare_put_uint(writer, 15);
+			goto fail;
+		}
+		if (bare_get_fixed_data(reader, (uint8_t *) message, msz) != BARE_ERROR_NONE) {
+			free(message);
+			bare_put_uint(writer, 11);
+			goto fail;
+		}
+		message[msz] = '\0';
+	}
+	git_signature *sig = NULL;
+	if (git_signature_new(&sig, aname, aemail, (git_time_t) when, (int)tzoff) != 0) {
+		free(message);
+		bare_put_uint(writer, 19);
+		goto fail;
+	}
+	git_tree *tree = NULL;
+	if (git_tree_lookup(&tree, repo, &tree_oid) != 0) {
+		git_signature_free(sig);
+		free(message);
+		bare_put_uint(writer, 19);
+		goto fail;
+	}
+	git_oid out;
+	int rc = git_commit_create(&out, repo, NULL, sig, sig, NULL, message, tree,
+				   (int)pcnt, (const git_commit **)parents);
+	git_tree_free(tree);
+	git_signature_free(sig);
+	free(message);
+	if (rc != 0) {
+		bare_put_uint(writer, 19);
+		goto fail;
+	}
+	bare_put_uint(writer, 0);
+	bare_put_data(writer, out.id, GIT_OID_RAWSZ);
+	if (parents) {
+		for (uint64_t i = 0; i < pcnt; i++)
+			if (parents[i])
+				git_commit_free(parents[i]);
+		free(parents);
+	}
+	return 0;
+ fail:
+	if (parents) {
+		for (uint64_t i = 0; i < pcnt; i++)
+			if (parents[i])
+				git_commit_free(parents[i]);
+		free(parents);
+	}
+	return -1;
+}
+
+int cmd_update_ref(git_repository *repo, struct bare_reader *reader, struct bare_writer *writer)
+{
+	char refname[4096] = { 0 };
+	char commithex[64] = { 0 };
+	if (bare_get_data(reader, (uint8_t *) refname, sizeof(refname) - 1) != BARE_ERROR_NONE) {
+		bare_put_uint(writer, 11);
+		return -1;
+	}
+	if (bare_get_data(reader, (uint8_t *) commithex, sizeof(commithex) - 1)
+	    != BARE_ERROR_NONE) {
+		bare_put_uint(writer, 11);
+		return -1;
+	}
+	git_oid oid;
+	if (git_oid_fromstr(&oid, commithex) != 0) {
+		bare_put_uint(writer, 18);
+		return -1;
+	}
+	git_reference *out = NULL;
+	int rc = git_reference_create(&out, repo, refname, &oid, 1, NULL);
+	if (rc != 0) {
+		bare_put_uint(writer, 18);
+		return -1;
+	}
+	git_reference_free(out);
+	bare_put_uint(writer, 0);
+	return 0;
+}