X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=fetch.c;h=cf6c99490c234c5854146f8f6e72d8c615517eea;hb=7612a1efdb0c0806b43db10ce784707aae874340;hp=1d95ce0cc2d1efcba2eb26354aa36482080d4077;hpb=8ac93bc98f5e868e890e1a740df9f0c6513189c8;p=git.git

diff --git a/fetch.c b/fetch.c
index 1d95ce0c..cf6c9949 100644
--- a/fetch.c
+++ b/fetch.c
@@ -3,18 +3,19 @@
 #include "cache.h"
 #include "commit.h"
 #include "tree.h"
+#include "tree-walk.h"
 #include "tag.h"
 #include "blob.h"
 #include "refs.h"
 
 const char *write_ref = NULL;
-
-const unsigned char *current_ref = NULL;
+const char *write_ref_log_details = NULL;
 
 int get_tree = 0;
 int get_history = 0;
 int get_all = 0;
 int get_verbosely = 0;
+int get_recover = 0;
 static unsigned char current_commit_sha1[20];
 
 void pull_say(const char *fmt, const char *hex) 
@@ -33,32 +34,43 @@ static void report_missing(const char *what, const unsigned char *missing)
 		what, missing_hex, sha1_to_hex(current_commit_sha1));
 }
 
-static int process(unsigned char *sha1, const char *type);
+static int process(struct object *obj);
 
 static int process_tree(struct tree *tree)
 {
-	struct tree_entry_list *entry;
+	struct tree_desc desc;
+	struct name_entry entry;
 
 	if (parse_tree(tree))
 		return -1;
 
-	entry = tree->entries;
-	tree->entries = NULL;
-	while (entry) {
-		struct tree_entry_list *next = entry->next;
-		if (process(entry->item.any->sha1,
-			    entry->directory ? tree_type : blob_type))
+	desc.buf = tree->buffer;
+	desc.size = tree->size;
+	while (tree_entry(&desc, &entry)) {
+		struct object *obj = NULL;
+
+		if (S_ISDIR(entry.mode)) {
+			struct tree *tree = lookup_tree(entry.sha1);
+			if (tree)
+				obj = &tree->object;
+		}
+		else {
+			struct blob *blob = lookup_blob(entry.sha1);
+			if (blob)
+				obj = &blob->object;
+		}
+		if (!obj || process(obj))
 			return -1;
-		free(entry);
-		entry = next;
 	}
+	free(tree->buffer);
+	tree->buffer = NULL;
+	tree->size = 0;
 	return 0;
 }
 
-#define COMPLETE	1U
-#define TO_FETCH	2U
-#define TO_SCAN		4U
-#define SCANNED		8U
+#define COMPLETE	(1U << 0)
+#define SEEN		(1U << 1)
+#define TO_SCAN		(1U << 2)
 
 static struct commit_list *complete = NULL;
 
@@ -79,7 +91,7 @@ static int process_commit(struct commit *commit)
 	pull_say("walk %s\n", sha1_to_hex(commit->object.sha1));
 
 	if (get_tree) {
-		if (process(commit->tree->object.sha1, tree_type))
+		if (process(&commit->tree->object))
 			return -1;
 		if (!get_all)
 			get_tree = 0;
@@ -87,7 +99,7 @@ static int process_commit(struct commit *commit)
 	if (get_history) {
 		struct commit_list *parents = commit->parents;
 		for (; parents; parents = parents->next) {
-			if (process(parents->item->object.sha1, commit_type))
+			if (process(&parents->item->object))
 				return -1;
 		}
 	}
@@ -98,7 +110,7 @@ static int process_tag(struct tag *tag)
 {
 	if (parse_tag(tag))
 		return -1;
-	return process(tag->tagged->sha1, NULL);
+	return process(tag->tagged);
 }
 
 static struct object_list *process_queue = NULL;
@@ -106,10 +118,6 @@ static struct object_list **process_queue_end = &process_queue;
 
 static int process_object(struct object *obj)
 {
-	if (obj->flags & SCANNED)
-		return 0;
-	obj->flags |= SCANNED;
-
 	if (obj->type == commit_type) {
 		if (process_commit((struct commit *)obj))
 			return -1;
@@ -133,28 +141,24 @@ static int process_object(struct object *obj)
 		     obj->type, sha1_to_hex(obj->sha1));
 }
 
-static int process(unsigned char *sha1, const char *type)
+static int process(struct object *obj)
 {
-	struct object *obj = lookup_object_type(sha1, type);
+	if (obj->flags & SEEN)
+		return 0;
+	obj->flags |= SEEN;
 
-	if (has_sha1_file(sha1)) {
-		parse_object(sha1);
+	if (has_sha1_file(obj->sha1)) {
 		/* We already have it, so we should scan it now. */
-		if (obj->flags & (SCANNED | TO_SCAN))
-			return 0;
-		object_list_insert(obj, process_queue_end);
-		process_queue_end = &(*process_queue_end)->next;
 		obj->flags |= TO_SCAN;
-		return 0;
 	}
-	if (obj->flags & (COMPLETE | TO_FETCH))
-		return 0;
+	else {
+		if (obj->flags & COMPLETE)
+			return 0;
+		prefetch(obj->sha1);
+	}
+		
 	object_list_insert(obj, process_queue_end);
 	process_queue_end = &(*process_queue_end)->next;
-	obj->flags |= TO_FETCH;
-
-	prefetch(sha1);
-		
 	return 0;
 }
 
@@ -213,32 +217,52 @@ static int mark_complete(const char *path, const unsigned char *sha1)
 
 int pull(char *target)
 {
+	struct ref_lock *lock = NULL;
 	unsigned char sha1[20];
-	int fd = -1;
+	char *msg;
+	int ret;
 
 	save_commit_buffer = 0;
-	if (write_ref && current_ref) {
-		fd = lock_ref_sha1(write_ref, current_ref);
-		if (fd < 0)
+	track_object_refs = 0;
+	if (write_ref) {
+		lock = lock_ref_sha1(write_ref, NULL, 0);
+		if (!lock) {
+			error("Can't lock ref %s", write_ref);
 			return -1;
+		}
 	}
 
-	for_each_ref(mark_complete);
+	if (!get_recover)
+		for_each_ref(mark_complete);
 
-	if (interpret_target(target, sha1))
-		return error("Could not interpret %s as something to pull",
-			     target);
-	if (process(sha1, NULL))
+	if (interpret_target(target, sha1)) {
+		error("Could not interpret %s as something to pull", target);
+		if (lock)
+			unlock_ref(lock);
 		return -1;
-	if (loop())
+	}
+	if (process(lookup_unknown_object(sha1))) {
+		if (lock)
+			unlock_ref(lock);
+		return -1;
+	}
+	if (loop()) {
+		if (lock)
+			unlock_ref(lock);
 		return -1;
-	
+	}
+
 	if (write_ref) {
-		if (current_ref) {
-			write_ref_sha1(write_ref, fd, sha1);
-		} else {
-			write_ref_sha1_unlocked(write_ref, sha1);
+		if (write_ref_log_details) {
+			msg = xmalloc(strlen(write_ref_log_details) + 12);
+			sprintf(msg, "fetch from %s", write_ref_log_details);
 		}
+		else
+			msg = NULL;
+		ret = write_ref_sha1(lock, sha1, msg ? msg : "fetch (unknown)");
+		if (msg)
+			free(msg);
+		return ret;
 	}
 	return 0;
 }