git2d: Factor commands out into their own files

3 files changed, 122 insertions, 98 deletions

diff --git a/git2d/cmd1.c b/git2d/cmd1.c
new file mode 100644
index 0000000..44f59db
--- /dev/null
+++ b/git2d/cmd1.c
@@ -0,0 +1,117 @@
+#include "x.h"
+
+int
+cmd1(git_repository *repo, struct bare_writer *writer)
+{
+	/* HEAD tree */
+	git_object *obj = NULL;
+	int err = git_revparse_single(&obj, repo, "HEAD^{tree}");
+	if (err != 0) {
+		bare_put_uint(writer, 4);
+		return -1;
+	}
+	git_tree *tree = (git_tree *) obj;
+
+	/* README */
+
+	git_tree_entry *entry = NULL;
+	err = git_tree_entry_bypath(&entry, tree, "README.md");
+	if (err != 0) {
+		bare_put_uint(writer, 5);
+		git_tree_free(tree);
+		return -1;
+	}
+	git_otype objtype = git_tree_entry_type(entry);
+	if (objtype != GIT_OBJECT_BLOB) {
+		bare_put_uint(writer, 6);
+		git_tree_entry_free(entry);
+		git_tree_free(tree);
+		return -1;
+	}
+	git_object *obj2 = NULL;
+	err = git_tree_entry_to_object(&obj2, repo, entry);
+	if (err != 0) {
+		bare_put_uint(writer, 7);
+		git_tree_entry_free(entry);
+		git_tree_free(tree);
+		return -1;
+	}
+	git_blob *blob = (git_blob *) obj2;
+	const void *content = git_blob_rawcontent(blob);
+	if (content == NULL) {
+		bare_put_uint(writer, 8);
+		git_blob_free(blob);
+		git_tree_entry_free(entry);
+		git_tree_free(tree);
+		return -1;
+	}
+	bare_put_uint(writer, 0);
+	bare_put_data(writer, content, git_blob_rawsize(blob));
+
+	/* Commits */
+
+	git_revwalk *walker = NULL;
+	if (git_revwalk_new(&walker, repo) != 0) {
+		bare_put_uint(writer, 9);
+		git_blob_free(blob);
+		git_tree_entry_free(entry);
+		git_tree_free(tree);
+		return -1;
+	}
+
+	if (git_revwalk_push_head(walker) != 0) {
+		bare_put_uint(writer, 9);
+		git_revwalk_free(walker);
+		git_blob_free(blob);
+		git_tree_entry_free(entry);
+		git_tree_free(tree);
+		return -1;
+	}
+
+	int count = 0;
+	git_oid oid;
+	while (count < 3 && git_revwalk_next(&oid, walker) == 0) {
+		git_commit *commit = NULL;
+		if (git_commit_lookup(&commit, repo, &oid) != 0)
+			break;
+
+		const char *msg = git_commit_summary(commit);
+		const git_signature *author = git_commit_author(commit);
+
+		/* ID */
+		bare_put_data(writer, oid.id, GIT_OID_RAWSZ);
+
+		/* Title */
+		size_t msg_len = msg ? strlen(msg) : 0;
+		bare_put_data(writer, (const uint8_t *)(msg ? msg : ""), msg_len);
+
+		/* Author's name */
+		const char *author_name = author ? author->name : "";
+		bare_put_data(writer, (const uint8_t *)author_name, strlen(author_name));
+
+		/* Author's email */
+		const char *author_email = author ? author->email : "";
+		bare_put_data(writer, (const uint8_t *)author_email, strlen(author_email));
+
+		/* Author's date */
+		/* TODO: Pass the integer instead of a string */
+		time_t time = git_commit_time(commit);
+		char timebuf[64];
+		struct tm *tm = localtime(&time);
+		if (tm)
+			strftime(timebuf, sizeof(timebuf), "%Y-%m-%d %H:%M:%S", tm);
+		else
+			strcpy(timebuf, "unknown");
+		bare_put_data(writer, (const uint8_t *)timebuf, strlen(timebuf));
+
+		git_commit_free(commit);
+		count++;
+	}
+
+	git_revwalk_free(walker);
+	git_blob_free(blob);
+	git_tree_entry_free(entry);
+	git_tree_free(tree);
+
+	return 0;
+}
diff --git a/git2d/session.c b/git2d/session.c
index aadab2a..f7ad843 100644
--- a/git2d/session.c
+++ b/git2d/session.c
@@ -48,6 +48,9 @@ session(void *_conn)
 	}
 	switch (cmd) {
 	case 1:
+		err = cmd1(repo, &writer);
+		if (err != 0)
+			goto free_repo;
 		break;
 	case 0:
 		bare_put_uint(&writer, 3);
@@ -57,104 +60,6 @@ session(void *_conn)
 		goto free_repo;
 	}
 
-	/* HEAD tree */
-	git_object *obj = NULL;
-	err = git_revparse_single(&obj, repo, "HEAD^{tree}");
-	if (err != 0) {
-		bare_put_uint(&writer, 4);
-		goto free_repo;
-	}
-	git_tree *tree = (git_tree *) obj;
-
-	/* README */
-
-	git_tree_entry *entry = NULL;
-	err = git_tree_entry_bypath(&entry, tree, "README.md");
-	if (err != 0) {
-		bare_put_uint(&writer, 5);
-		goto free_tree;
-	}
-	git_otype objtype = git_tree_entry_type(entry);
-	if (objtype != GIT_OBJECT_BLOB) {
-		bare_put_uint(&writer, 6);
-		goto free_tree_entry;
-	}
-	git_object *obj2 = NULL;
-	err = git_tree_entry_to_object(&obj2, repo, entry);
-	if (err != 0) {
-		bare_put_uint(&writer, 7);
-		goto free_tree_entry;
-	}
-	git_blob *blob = (git_blob *) obj2;
-	const void *content = git_blob_rawcontent(blob);
-	if (content == NULL) {
-		bare_put_uint(&writer, 8);
-		goto free_blob;
-	}
-	bare_put_uint(&writer, 0);
-	bare_put_data(&writer, content, git_blob_rawsize(blob));
-
-	/* Commits */
-
-	git_revwalk *walker = NULL;
-	if (git_revwalk_new(&walker, repo) != 0) {
-		bare_put_uint(&writer, 9);
-		goto free_blob;
-	}
-
-	if (git_revwalk_push_head(walker) != 0) {
-		bare_put_uint(&writer, 9);
-		goto free_blob;
-	}
-
-	int count = 0;
-	git_oid oid;
-	while (count < 3 && git_revwalk_next(&oid, walker) == 0) {
-		git_commit *commit = NULL;
-		if (git_commit_lookup(&commit, repo, &oid) != 0)
-			break;
-
-		const char *msg = git_commit_summary(commit);
-		const git_signature *author = git_commit_author(commit);
-
-		/* ID */
-		bare_put_data(&writer, oid.id, GIT_OID_RAWSZ);
-
-		/* Title */
-		size_t msg_len = msg ? strlen(msg) : 0;
-		bare_put_data(&writer, (const uint8_t *)(msg ? msg : ""), msg_len);
-
-		/* Author's name */
-		const char *author_name = author ? author->name : "";
-		bare_put_data(&writer, (const uint8_t *)author_name, strlen(author_name));
-
-		/* Author's email */
-		const char *author_email = author ? author->email : "";
-		bare_put_data(&writer, (const uint8_t *)author_email, strlen(author_email));
-
-		/* Author's date */
-		/* TODO: Pass the integer instead of a string */
-		time_t time = git_commit_time(commit);
-		char timebuf[64];
-		struct tm *tm = localtime(&time);
-		if (tm)
-			strftime(timebuf, sizeof(timebuf), "%Y-%m-%d %H:%M:%S", tm);
-		else
-			strcpy(timebuf, "unknown");
-		bare_put_data(&writer, (const uint8_t *)timebuf, strlen(timebuf));
-
-		git_commit_free(commit);
-		count++;
-	}
-
-	git_revwalk_free(walker);
-
-free_blob:
-	git_blob_free(blob);
-free_tree_entry:
-	git_tree_entry_free(entry);
-free_tree:
-	git_tree_free(tree);
 free_repo:
 	git_repository_free(repo);
 
diff --git a/git2d/x.h b/git2d/x.h
index 92f7414..f852b23 100644
--- a/git2d/x.h
+++ b/git2d/x.h
@@ -32,4 +32,6 @@ bare_error conn_write(void *buffer, const void *src, uint64_t sz);
 
 void * session(void *_conn);
 
+int cmd1(git_repository *repo, struct bare_writer *writer);
+
 #endif // X_H