X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=builtin-fetch.c;h=5841b3e51a5c908a32761398d6237968ddac4d46;hb=fae09a8084c9b51632726523b477a78dd28d7d7e;hp=de9947e7ac2cc1236909fab813198b3df93bd39e;hpb=ac4d528ec18ae13a45166ef2afa9ffbba35f736f;p=git.git

diff --git a/builtin-fetch.c b/builtin-fetch.c
index de9947e7a..5841b3e51 100644
--- a/builtin-fetch.c
+++ b/builtin-fetch.c
@@ -9,14 +9,47 @@
 #include "remote.h"
 #include "transport.h"
 #include "run-command.h"
+#include "parse-options.h"
 
-static const char fetch_usage[] = "git-fetch [-a | --append] [--upload-pack <upload-pack>] [-f | --force] [--no-tags] [-t | --tags] [-k | --keep] [-u | --update-head-ok] [--depth <depth>] [-v | --verbose] [<repository> <refspec>...]";
+static const char * const builtin_fetch_usage[] = {
+	"git-fetch [options] [<repository> <refspec>...]",
+	NULL
+};
 
-static int append, force, tags, no_tags, update_head_ok, verbose, quiet;
+enum {
+	TAGS_UNSET = 0,
+	TAGS_DEFAULT = 1,
+	TAGS_SET = 2
+};
+
+static int append, force, keep, update_head_ok, verbose, quiet;
+static int tags = TAGS_DEFAULT;
 static const char *depth;
-static char *default_rla = NULL;
+static const char *upload_pack;
+static struct strbuf default_rla = STRBUF_INIT;
 static struct transport *transport;
 
+static struct option builtin_fetch_options[] = {
+	OPT__QUIET(&quiet),
+	OPT__VERBOSE(&verbose),
+	OPT_BOOLEAN('a', "append", &append,
+		    "append to .git/FETCH_HEAD instead of overwriting"),
+	OPT_STRING(0, "upload-pack", &upload_pack, "PATH",
+		   "path to upload pack on remote end"),
+	OPT_BOOLEAN('f', "force", &force,
+		    "force overwrite of local branch"),
+	OPT_SET_INT('t', "tags", &tags,
+		    "fetch all tags and associated objects", TAGS_SET),
+	OPT_SET_INT('n', NULL, &tags,
+		    "do not fetch all tags (--no-tags)", TAGS_UNSET),
+	OPT_BOOLEAN('k', "keep", &keep, "keep downloaded pack"),
+	OPT_BOOLEAN('u', "update-head-ok", &update_head_ok,
+		    "allow updating of HEAD ref"),
+	OPT_STRING(0, "depth", &depth, "DEPTH",
+		   "deepen history of shallow clone"),
+	OPT_END()
+};
+
 static void unlock_pack(void)
 {
 	if (transport)
@@ -70,6 +103,10 @@ static void add_merge_config(struct ref **head,
 	}
 }
 
+static void find_non_local_tags(struct transport *transport,
+			struct ref **head,
+			struct ref ***tail);
+
 static struct ref *get_ref_map(struct transport *transport,
 			       struct refspec *refs, int ref_count, int tags,
 			       int *autotags)
@@ -81,7 +118,7 @@ static struct ref *get_ref_map(struct transport *transport,
 
 	const struct ref *remote_refs = transport_get_remote_refs(transport);
 
-	if (ref_count || tags) {
+	if (ref_count || tags == TAGS_SET) {
 		for (i = 0; i < ref_count; i++) {
 			get_fetch_map(remote_refs, &refs[i], &tail, 0);
 			if (refs[i].dst && refs[i].dst[0])
@@ -90,7 +127,7 @@ static struct ref *get_ref_map(struct transport *transport,
 		/* Merge everything on the command line, but not --tags */
 		for (rm = ref_map; rm; rm = rm->next)
 			rm->merge = 1;
-		if (tags) {
+		if (tags == TAGS_SET) {
 			struct refspec refspec;
 			refspec.src = "refs/tags/";
 			refspec.dst = "refs/tags/";
@@ -126,8 +163,11 @@ static struct ref *get_ref_map(struct transport *transport,
 			if (!ref_map)
 				die("Couldn't find remote ref HEAD");
 			ref_map->merge = 1;
+			tail = &ref_map->next;
 		}
 	}
+	if (tags == TAGS_DEFAULT && *autotags)
+		find_non_local_tags(transport, &ref_map, &tail);
 	ref_remove_duplicates(ref_map);
 
 	return ref_map;
@@ -142,7 +182,7 @@ static int s_update_ref(const char *action,
 	static struct ref_lock *lock;
 
 	if (!rla)
-		rla = default_rla;
+		rla = default_rla.buf;
 	snprintf(msg, sizeof(msg), "%s: %s", rla, action);
 	lock = lock_any_ref_for_update(ref->name,
 				       check_old ? ref->old_sha1 : NULL, 0);
@@ -421,18 +461,28 @@ static int add_existing(const char *refname, const unsigned char *sha1,
 	return 0;
 }
 
-static struct ref *find_non_local_tags(struct transport *transport,
-				       struct ref *fetch_map)
+static int will_fetch(struct ref **head, const unsigned char *sha1)
+{
+	struct ref *rm = *head;
+	while (rm) {
+		if (!hashcmp(rm->old_sha1, sha1))
+			return 1;
+		rm = rm->next;
+	}
+	return 0;
+}
+
+static void find_non_local_tags(struct transport *transport,
+			struct ref **head,
+			struct ref ***tail)
 {
-	static struct path_list existing_refs = { NULL, 0, 0, 0 };
+	struct path_list existing_refs = { NULL, 0, 0, 0 };
 	struct path_list new_refs = { NULL, 0, 0, 1 };
 	char *ref_name;
 	int ref_name_len;
 	const unsigned char *ref_sha1;
 	const struct ref *tag_ref;
 	struct ref *rm = NULL;
-	struct ref *ref_map = NULL;
-	struct ref **tail = &ref_map;
 	const struct ref *ref;
 
 	for_each_ref(add_existing, &existing_refs);
@@ -458,7 +508,8 @@ static struct ref *find_non_local_tags(struct transport *transport,
 
 		if (!path_list_has_path(&existing_refs, ref_name) &&
 		    !path_list_has_path(&new_refs, ref_name) &&
-		    has_sha1_file(ref->old_sha1)) {
+		    (has_sha1_file(ref->old_sha1) ||
+		     will_fetch(head, ref->old_sha1))) {
 			path_list_insert(ref_name, &new_refs);
 
 			rm = alloc_ref(strlen(ref_name) + 1);
@@ -467,25 +518,25 @@ static struct ref *find_non_local_tags(struct transport *transport,
 			strcpy(rm->peer_ref->name, ref_name);
 			hashcpy(rm->old_sha1, ref_sha1);
 
-			*tail = rm;
-			tail = &rm->next;
+			**tail = rm;
+			*tail = &rm->next;
 		}
 		free(ref_name);
 	}
-
-	return ref_map;
+	path_list_clear(&existing_refs, 0);
+	path_list_clear(&new_refs, 0);
 }
 
 static int do_fetch(struct transport *transport,
 		    struct refspec *refs, int ref_count)
 {
-	struct ref *ref_map, *fetch_map;
+	struct ref *ref_map;
 	struct ref *rm;
 	int autotags = (transport->remote->fetch_tags == 1);
-	if (transport->remote->fetch_tags == 2 && !no_tags)
-		tags = 1;
+	if (transport->remote->fetch_tags == 2 && tags != TAGS_UNSET)
+		tags = TAGS_SET;
 	if (transport->remote->fetch_tags == -1)
-		no_tags = 1;
+		tags = TAGS_UNSET;
 
 	if (!transport->get_refs_list || !transport->fetch)
 		die("Don't know how to fetch from %s", transport->url);
@@ -506,25 +557,29 @@ static int do_fetch(struct transport *transport,
 			read_ref(rm->peer_ref->name, rm->peer_ref->old_sha1);
 	}
 
+	if (tags == TAGS_DEFAULT && autotags)
+		transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
 	if (fetch_refs(transport, ref_map)) {
 		free_refs(ref_map);
 		return 1;
 	}
-
-	fetch_map = ref_map;
+	free_refs(ref_map);
 
 	/* if neither --no-tags nor --tags was specified, do automated tag
 	 * following ... */
-	if (!(tags || no_tags) && autotags) {
-		ref_map = find_non_local_tags(transport, fetch_map);
+	if (tags == TAGS_DEFAULT && autotags) {
+		struct ref **tail = &ref_map;
+		ref_map = NULL;
+		find_non_local_tags(transport, &ref_map, &tail);
 		if (ref_map) {
+			transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, NULL);
 			transport_set_option(transport, TRANS_OPT_DEPTH, "0");
 			fetch_refs(transport, ref_map);
 		}
 		free_refs(ref_map);
 	}
 
-	free_refs(fetch_map);
+	transport_disconnect(transport);
 
 	return 0;
 }
@@ -543,91 +598,22 @@ static void set_option(const char *name, const char *value)
 int cmd_fetch(int argc, const char **argv, const char *prefix)
 {
 	struct remote *remote;
-	int i, j, rla_offset;
+	int i;
 	static const char **refs = NULL;
 	int ref_nr = 0;
-	int cmd_len = 0;
-	const char *upload_pack = NULL;
-	int keep = 0;
-
-	for (i = 1; i < argc; i++) {
-		const char *arg = argv[i];
-		cmd_len += strlen(arg);
-
-		if (arg[0] != '-')
-			break;
-		if (!strcmp(arg, "--append") || !strcmp(arg, "-a")) {
-			append = 1;
-			continue;
-		}
-		if (!prefixcmp(arg, "--upload-pack=")) {
-			upload_pack = arg + 14;
-			continue;
-		}
-		if (!strcmp(arg, "--upload-pack")) {
-			i++;
-			if (i == argc)
-				usage(fetch_usage);
-			upload_pack = argv[i];
-			continue;
-		}
-		if (!strcmp(arg, "--force") || !strcmp(arg, "-f")) {
-			force = 1;
-			continue;
-		}
-		if (!strcmp(arg, "--no-tags")) {
-			no_tags = 1;
-			continue;
-		}
-		if (!strcmp(arg, "--tags") || !strcmp(arg, "-t")) {
-			tags = 1;
-			continue;
-		}
-		if (!strcmp(arg, "--keep") || !strcmp(arg, "-k")) {
-			keep = 1;
-			continue;
-		}
-		if (!strcmp(arg, "--update-head-ok") || !strcmp(arg, "-u")) {
-			update_head_ok = 1;
-			continue;
-		}
-		if (!prefixcmp(arg, "--depth=")) {
-			depth = arg + 8;
-			continue;
-		}
-		if (!strcmp(arg, "--depth")) {
-			i++;
-			if (i == argc)
-				usage(fetch_usage);
-			depth = argv[i];
-			continue;
-		}
-		if (!strcmp(arg, "--quiet") || !strcmp(arg, "-q")) {
-			quiet = 1;
-			continue;
-		}
-		if (!strcmp(arg, "--verbose") || !strcmp(arg, "-v")) {
-			verbose++;
-			continue;
-		}
-		usage(fetch_usage);
-	}
 
-	for (j = i; j < argc; j++)
-		cmd_len += strlen(argv[j]);
+	/* Record the command line for the reflog */
+	strbuf_addstr(&default_rla, "fetch");
+	for (i = 1; i < argc; i++)
+		strbuf_addf(&default_rla, " %s", argv[i]);
 
-	default_rla = xmalloc(cmd_len + 5 + argc + 1);
-	sprintf(default_rla, "fetch");
-	rla_offset = strlen(default_rla);
-	for (j = 1; j < argc; j++) {
-		sprintf(default_rla + rla_offset, " %s", argv[j]);
-		rla_offset += strlen(argv[j]) + 1;
-	}
+	argc = parse_options(argc, argv,
+			     builtin_fetch_options, builtin_fetch_usage, 0);
 
-	if (i == argc)
+	if (argc == 0)
 		remote = remote_get(NULL);
 	else
-		remote = remote_get(argv[i++]);
+		remote = remote_get(argv[0]);
 
 	transport = transport_get(remote, remote->url[0]);
 	if (verbose >= 2)
@@ -644,13 +630,15 @@ int cmd_fetch(int argc, const char **argv, const char *prefix)
 	if (!transport->url)
 		die("Where do you want to fetch from today?");
 
-	if (i < argc) {
+	if (argc > 1) {
 		int j = 0;
-		refs = xcalloc(argc - i + 1, sizeof(const char *));
-		while (i < argc) {
+		refs = xcalloc(argc + 1, sizeof(const char *));
+		for (i = 1; i < argc; i++) {
 			if (!strcmp(argv[i], "tag")) {
 				char *ref;
 				i++;
+				if (i >= argc)
+					die("You need to specify a tag name.");
 				ref = xmalloc(strlen(argv[i]) * 2 + 22);
 				strcpy(ref, "refs/tags/");
 				strcat(ref, argv[i]);
@@ -659,7 +647,6 @@ int cmd_fetch(int argc, const char **argv, const char *prefix)
 				refs[j++] = ref;
 			} else
 				refs[j++] = argv[i];
-			i++;
 		}
 		refs[j] = NULL;
 		ref_nr = j;
@@ -667,5 +654,6 @@ int cmd_fetch(int argc, const char **argv, const char *prefix)
 
 	signal(SIGINT, unlock_pack_on_signal);
 	atexit(unlock_pack);
-	return do_fetch(transport, parse_ref_spec(ref_nr, refs), ref_nr);
+	return do_fetch(transport,
+			parse_fetch_refspec(ref_nr, refs), ref_nr);
 }