Implement sending haves

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

src/fetch.c

@@ -38,8 +38,8 @@
  */
 static int whn_cmp(const void *a, const void *b)
 {
-	git_remote_head *heada = *(git_remote_head **)(a);
-	git_remote_head *headb = *(git_remote_head **)(b);
+	git_remote_head *heada = (git_remote_head *) a;
+	git_remote_head *headb = (git_remote_head *) b;
 
 	return headb->type - heada->type;
 }
@@ -57,7 +57,7 @@ int git_fetch_list_want(git_headarray *whn_list, git_repository *repo, git_remot
 	int error;
 	unsigned int i;
 
-	error = git_vector_init(&list, whn_list->len, whn_cmp);
+	error = git_vector_init(&list, 16, whn_cmp);
 	if (error < GIT_SUCCESS)
 		return error;
 
@@ -182,8 +182,8 @@ int git_fetch_negotiate(git_headarray *list, git_repository *repo, git_remote *r
 	 * Now we have everything set up so we can start tell the server
 	 * what we want and what we have.
 	 */
-	git_remote_send_wants(remote, list);
-
+	git_transport_send_wants(remote->transport, list);
+	git_transport_send_haves(remote->transport, repo);
 
 cleanup:
 	git_revwalk_free(walk);

src/pkt.c

@@ -27,6 +27,8 @@
 
 #include "git2/types.h"
 #include "git2/errors.h"
+#include "git2/refs.h"
+#include "git2/revwalk.h"
 
 #include "pkt.h"
 #include "util.h"
@@ -229,9 +231,70 @@ int git_pkt_send_wants(git_headarray *refs, int fd)
 
 	for (i = 0; i < refs->len; ++i) {
 		head = refs->heads[i];
+		if (head->type != GIT_WHN_WANT)
+			continue;
+
 		git_oid_fmt(buf + STRLEN(WANT_PREFIX), &head->oid);
-		printf("would send %s\n", buf);
+		printf("would send %s", buf);
 	}
 
+	/* TODO: git_pkt_send_flush(fd) */
+	printf("Wound send 0000\n");
+
+	return ret;
+}
+
+#define HAVE_PREFIX "0032have "
+
+int git_pkt_send_haves(git_repository *repo, int fd)
+{
+	unsigned int i;
+	int ret = GIT_SUCCESS;
+	char buf[STRLEN(HAVE_PREFIX) + GIT_OID_HEXSZ + 2];
+	git_oid oid;
+	git_revwalk *walk;
+	git_strarray refs;
+	git_reference *ref;
+	git_remote_head *head;
+
+	memcpy(buf, HAVE_PREFIX, STRLEN(HAVE_PREFIX));
+	buf[sizeof(buf) - 2] = '\n';
+	buf[sizeof(buf) - 1] = '\0';
+
+	ret = git_reference_listall(&refs, repo, GIT_REF_LISTALL);
+	if (ret < GIT_ERROR)
+		return git__rethrow(ret, "Failed to list all references");
+
+	ret = git_revwalk_new(&walk, repo);
+	if (ret < GIT_ERROR) {
+		ret = git__rethrow(ret, "Failed to list all references");
+		goto cleanup;
+	}
+
+	for (i = 0; i < refs.count; ++i) {
+		ret = git_reference_lookup(&ref, repo, refs.strings[i]);
+		if (ret < GIT_ERROR) {
+			ret = git__rethrow(ret, "Failed to lookup %s", refs.strings[i]);
+			goto cleanup;
+		}
+
+		ret = git_revwalk_push(walk, git_reference_oid(ref));
+		if (ret < GIT_ERROR) {
+			ret = git__rethrow(ret, "Failed to push %s", refs.strings[i]);
+			goto cleanup;
+		}
+	}
+
+	while ((ret = git_revwalk_next(&oid, walk)) == GIT_SUCCESS) {
+		git_oid_fmt(buf + STRLEN(HAVE_PREFIX), &oid);
+		printf("would send %s", buf);
+	}
+
+	/* TODO: git_pkt_send_flush(fd) */
+	printf("Wound send 0000\n");
+
+cleanup:
+	git_revwalk_free(walk);
+	git_strarray_free(&refs);
 	return ret;
 }

src/pkt.h

@@ -57,6 +57,8 @@ typedef struct {
 
 int git_pkt_parse_line(git_pkt **head, const char *line, const char **out, size_t len);
 int git_pkt_send_flush(int s);
+int git_pkt_send_haves(git_repository *repo, int fd);
+int git_pkt_send_wants(git_headarray *refs, int fd);
 void git_pkt_free(git_pkt *pkt);
 
 #endif

src/remote.c

@@ -31,11 +31,6 @@
 #include "repository.h"
 #include "remote.h"
 
-int git_remote_send_wants(git_remote *remote, git_headarray *list)
-{
-	return git_transport_send_wants(remote->transport, list);
-}
-
 static int refspec_parse(git_refspec *refspec, const char *str)
 {
 	char *delim;

src/remote.h

@@ -1,9 +1,9 @@
 #ifndef INCLUDE_remote_h__
 #define INCLUDE_remote_h__
 
-#include "remote.h"
 #include "refspec.h"
 #include "transport.h"
+#include "repository.h"
 
 struct git_remote {
 	char *name;
@@ -13,6 +13,4 @@ struct git_remote {
 	git_transport *transport;
 };
 
-int git_remote_send_wants(git_remote *remote, git_headarray *list);
-
 #endif

src/transport.c

@@ -85,6 +85,11 @@ int git_transport_send_wants(struct git_transport *transport, git_headarray *arr
 	return transport->send_wants(transport, array);
 }
 
+int git_transport_send_haves(struct git_transport *transport, git_repository *repo)
+{
+	return transport->send_haves(transport, repo);
+}
+
 int git_transport_close(git_transport *transport)
 {
 	return transport->close(transport);

src/transport.h

@@ -60,6 +60,10 @@ struct git_transport {
 	 * Send the list of 'want' refs
 	 */
 	int (*send_wants)(struct git_transport *transport, git_headarray *list);
+	/**
+	 * Send the list of 'have' refs
+	 */
+	int (*send_haves)(struct git_transport *transport, git_repository *repo);
 	/**
 	 * Fetch the changes
 	 */

src/transport_git.c

@@ -281,6 +281,13 @@ static int git_send_wants(git_transport *transport, git_headarray *array)
 	return git_pkt_send_wants(array, t->socket);
 }
 
+static int git_send_haves(git_transport *transport, git_repository *repo)
+{
+	transport_git *t = (transport_git *) transport;
+
+	return git_pkt_send_haves(repo, t->socket);
+}
+
 static int git_close(git_transport *transport)
 {
 	transport_git *t = (transport_git*) transport;
@@ -326,6 +333,7 @@ int git_transport_git(git_transport **out)
 	t->parent.connect = git_connect;
 	t->parent.ls = git_ls;
 	t->parent.send_wants = git_send_wants;
+	t->parent.send_haves = git_send_haves;
 	t->parent.close = git_close;
 	t->parent.free = git_free;