Merge branch 'bc/object-id'

Conversion from unsigned char [40] to struct object_id continues.

* bc/object-id:
  Documentation: update and rename api-sha1-array.txt
  Rename sha1_array to oid_array
  Convert sha1_array_for_each_unique and for_each_abbrev to object_id
  Convert sha1_array_lookup to take struct object_id
  Convert remaining callers of sha1_array_lookup to object_id
  Make sha1_array_append take a struct object_id *
  sha1-array: convert internal storage for struct sha1_array to object_id
  builtin/pull: convert to struct object_id
  submodule: convert check_for_new_submodule_commits to object_id
  sha1_name: convert disambiguate_hint_fn to take object_id
  sha1_name: convert struct disambiguate_state to object_id
  test-sha1-array: convert most code to struct object_id
  parse-options-cb: convert sha1_array_append caller to struct object_id
  fsck: convert init_skiplist to struct object_id
  builtin/receive-pack: convert portions to struct object_id
  builtin/pull: convert portions to struct object_id
  builtin/diff: convert to struct object_id
  Convert GIT_SHA1_RAWSZ used for allocation to GIT_MAX_RAWSZ
  Convert GIT_SHA1_HEXSZ used for allocation to GIT_MAX_HEXSZ
  Define new hash-size constants for allocating memory

Author: gitster

Documentation/technical/api-sha1-array.txt renamed to Documentation/technical/api-oid-array.txt

@@ -1,41 +1,41 @@
-sha1-array API
+oid-array API
 ==============
 
-The sha1-array API provides storage and manipulation of sets of SHA-1
+The oid-array API provides storage and manipulation of sets of object
 identifiers. The emphasis is on storage and processing efficiency,
 making them suitable for large lists. Note that the ordering of items is
 not preserved over some operations.
 
 Data Structures
 ---------------
 
-`struct sha1_array`::
+`struct oid_array`::
 
-	A single array of SHA-1 hashes. This should be initialized by
-	assignment from `SHA1_ARRAY_INIT`.  The `sha1` member contains
+	A single array of object IDs. This should be initialized by
+	assignment from `OID_ARRAY_INIT`.  The `oid` member contains
 	the actual data. The `nr` member contains the number of items in
 	the set.  The `alloc` and `sorted` members are used internally,
 	and should not be needed by API callers.
 
 Functions
 ---------
 
-`sha1_array_append`::
-	Add an item to the set. The sha1 will be placed at the end of
+`oid_array_append`::
+	Add an item to the set. The object ID will be placed at the end of
 	the array (but note that some operations below may lose this
 	ordering).
 
-`sha1_array_lookup`::
-	Perform a binary search of the array for a specific sha1.
+`oid_array_lookup`::
+	Perform a binary search of the array for a specific object ID.
 	If found, returns the offset (in number of elements) of the
-	sha1. If not found, returns a negative integer. If the array is
-	not sorted, this function has the side effect of sorting it.
+	object ID. If not found, returns a negative integer. If the array
+	is not sorted, this function has the side effect of sorting it.
 
-`sha1_array_clear`::
+`oid_array_clear`::
 	Free all memory associated with the array and return it to the
 	initial, empty state.
 
-`sha1_array_for_each_unique`::
+`oid_array_for_each_unique`::
 	Efficiently iterate over each unique element of the list,
 	executing the callback function for each one. If the array is
 	not sorted, this function has the side effect of sorting it. If
@@ -47,25 +47,25 @@ Examples
 --------
 
 -----------------------------------------
-int print_callback(const unsigned char sha1[20],
+int print_callback(const struct object_id *oid,
 		    void *data)
 {
-	printf("%s\n", sha1_to_hex(sha1));
+	printf("%s\n", oid_to_hex(oid));
 	return 0; /* always continue */
 }
 
 void some_func(void)
 {
-	struct sha1_array hashes = SHA1_ARRAY_INIT;
-	unsigned char sha1[20];
+	struct sha1_array hashes = OID_ARRAY_INIT;
+	struct object_id oid;
 
 	/* Read objects into our set */
-	while (read_object_from_stdin(sha1))
-		sha1_array_append(&hashes, sha1);
+	while (read_object_from_stdin(oid.hash))
+		oid_array_append(&hashes, &oid);
 
 	/* Check if some objects are in our set */
-	while (read_object_from_stdin(sha1)) {
-		if (sha1_array_lookup(&hashes, sha1) >= 0)
+	while (read_object_from_stdin(oid.hash)) {
+		if (oid_array_lookup(&hashes, &oid) >= 0)
 			printf("it's in there!\n");
 
 	/*
@@ -75,6 +75,6 @@ void some_func(void)
 	 * Instead, this will sort once and then skip duplicates
 	 * in linear time.
 	 */
-	sha1_array_for_each_unique(&hashes, print_callback, NULL);
+	oid_array_for_each_unique(&hashes, print_callback, NULL);
 }
 -----------------------------------------

bisect.c

@@ -12,8 +12,8 @@
 #include "sha1-array.h"
 #include "argv-array.h"
 
-static struct sha1_array good_revs;
-static struct sha1_array skipped_revs;
+static struct oid_array good_revs;
+static struct oid_array skipped_revs;
 
 static struct object_id *current_bad_oid;
 
@@ -415,9 +415,9 @@ static int register_ref(const char *refname, const struct object_id *oid,
 		current_bad_oid = xmalloc(sizeof(*current_bad_oid));
 		oidcpy(current_bad_oid, oid);
 	} else if (starts_with(refname, good_prefix.buf)) {
-		sha1_array_append(&good_revs, oid->hash);
+		oid_array_append(&good_revs, oid);
 	} else if (starts_with(refname, "skip-")) {
-		sha1_array_append(&skipped_revs, oid->hash);
+		oid_array_append(&skipped_revs, oid);
 	}
 
 	strbuf_release(&good_prefix);
@@ -453,13 +453,13 @@ static void read_bisect_paths(struct argv_array *array)
 	fclose(fp);
 }
 
-static char *join_sha1_array_hex(struct sha1_array *array, char delim)
+static char *join_sha1_array_hex(struct oid_array *array, char delim)
 {
 	struct strbuf joined_hexs = STRBUF_INIT;
 	int i;
 
 	for (i = 0; i < array->nr; i++) {
-		strbuf_addstr(&joined_hexs, sha1_to_hex(array->sha1[i]));
+		strbuf_addstr(&joined_hexs, oid_to_hex(array->oid + i));
 		if (i + 1 < array->nr)
 			strbuf_addch(&joined_hexs, delim);
 	}
@@ -501,8 +501,7 @@ struct commit_list *filter_skipped(struct commit_list *list,
 	while (list) {
 		struct commit_list *next = list->next;
 		list->next = NULL;
-		if (0 <= sha1_array_lookup(&skipped_revs,
-					   list->item->object.oid.hash)) {
+		if (0 <= oid_array_lookup(&skipped_revs, &list->item->object.oid)) {
 			if (skipped_first && !*skipped_first)
 				*skipped_first = 1;
 			/* Move current to tried list */
@@ -623,7 +622,7 @@ static void bisect_rev_setup(struct rev_info *revs, const char *prefix,
 	argv_array_pushf(&rev_argv, bad_format, oid_to_hex(current_bad_oid));
 	for (i = 0; i < good_revs.nr; i++)
 		argv_array_pushf(&rev_argv, good_format,
-				 sha1_to_hex(good_revs.sha1[i]));
+				 oid_to_hex(good_revs.oid + i));
 	argv_array_push(&rev_argv, "--");
 	if (read_paths)
 		read_bisect_paths(&rev_argv);
@@ -684,7 +683,7 @@ static int is_expected_rev(const struct object_id *oid)
 
 static int bisect_checkout(const unsigned char *bisect_rev, int no_checkout)
 {
-	char bisect_rev_hex[GIT_SHA1_HEXSZ + 1];
+	char bisect_rev_hex[GIT_MAX_HEXSZ + 1];
 
 	memcpy(bisect_rev_hex, sha1_to_hex(bisect_rev), GIT_SHA1_HEXSZ + 1);
 	update_ref(NULL, "BISECT_EXPECTED_REV", bisect_rev, NULL, 0, UPDATE_REFS_DIE_ON_ERR);
@@ -703,11 +702,11 @@ static int bisect_checkout(const unsigned char *bisect_rev, int no_checkout)
 	return run_command_v_opt(argv_show_branch, RUN_GIT_CMD);
 }
 
-static struct commit *get_commit_reference(const unsigned char *sha1)
+static struct commit *get_commit_reference(const struct object_id *oid)
 {
-	struct commit *r = lookup_commit_reference(sha1);
+	struct commit *r = lookup_commit_reference(oid->hash);
 	if (!r)
-		die(_("Not a valid commit name %s"), sha1_to_hex(sha1));
+		die(_("Not a valid commit name %s"), oid_to_hex(oid));
 	return r;
 }
 
@@ -717,9 +716,9 @@ static struct commit **get_bad_and_good_commits(int *rev_nr)
 	int i, n = 0;
 
 	ALLOC_ARRAY(rev, 1 + good_revs.nr);
-	rev[n++] = get_commit_reference(current_bad_oid->hash);
+	rev[n++] = get_commit_reference(current_bad_oid);
 	for (i = 0; i < good_revs.nr; i++)
-		rev[n++] = get_commit_reference(good_revs.sha1[i]);
+		rev[n++] = get_commit_reference(good_revs.oid + i);
 	*rev_nr = n;
 
 	return rev;
@@ -756,9 +755,9 @@ static void handle_bad_merge_base(void)
 	exit(1);
 }
 
-static void handle_skipped_merge_base(const unsigned char *mb)
+static void handle_skipped_merge_base(const struct object_id *mb)
 {
-	char *mb_hex = sha1_to_hex(mb);
+	char *mb_hex = oid_to_hex(mb);
 	char *bad_hex = oid_to_hex(current_bad_oid);
 	char *good_hex = join_sha1_array_hex(&good_revs, ' ');
 
@@ -789,16 +788,16 @@ static void check_merge_bases(int no_checkout)
 	result = get_merge_bases_many(rev[0], rev_nr - 1, rev + 1);
 
 	for (; result; result = result->next) {
-		const unsigned char *mb = result->item->object.oid.hash;
-		if (!hashcmp(mb, current_bad_oid->hash)) {
+		const struct object_id *mb = &result->item->object.oid;
+		if (!oidcmp(mb, current_bad_oid)) {
 			handle_bad_merge_base();
-		} else if (0 <= sha1_array_lookup(&good_revs, mb)) {
+		} else if (0 <= oid_array_lookup(&good_revs, mb)) {
 			continue;
-		} else if (0 <= sha1_array_lookup(&skipped_revs, mb)) {
+		} else if (0 <= oid_array_lookup(&skipped_revs, mb)) {
 			handle_skipped_merge_base(mb);
 		} else {
 			printf(_("Bisecting: a merge base must be tested\n"));
-			exit(bisect_checkout(mb, no_checkout));
+			exit(bisect_checkout(mb->hash, no_checkout));
 		}
 	}
 

builtin/blame.c

@@ -1890,7 +1890,7 @@ static void emit_porcelain(struct scoreboard *sb, struct blame_entry *ent,
 	int cnt;
 	const char *cp;
 	struct origin *suspect = ent->suspect;
-	char hex[GIT_SHA1_HEXSZ + 1];
+	char hex[GIT_MAX_HEXSZ + 1];
 
 	oid_to_hex_r(hex, &suspect->commit->object.oid);
 	printf("%s %d %d %d\n",
@@ -1928,7 +1928,7 @@ static void emit_other(struct scoreboard *sb, struct blame_entry *ent, int opt)
 	const char *cp;
 	struct origin *suspect = ent->suspect;
 	struct commit_info ci;
-	char hex[GIT_SHA1_HEXSZ + 1];
+	char hex[GIT_MAX_HEXSZ + 1];
 	int show_raw_time = !!(opt & OUTPUT_RAW_TIMESTAMP);
 
 	get_commit_info(suspect->commit, &ci, 1);

builtin/cat-file.c

@@ -401,10 +401,10 @@ struct object_cb_data {
 	struct expand_data *expand;
 };
 
-static int batch_object_cb(const unsigned char sha1[20], void *vdata)
+static int batch_object_cb(const struct object_id *oid, void *vdata)
 {
 	struct object_cb_data *data = vdata;
-	hashcpy(data->expand->oid.hash, sha1);
+	oidcpy(&data->expand->oid, oid);
 	batch_object_write(NULL, data->opt, data->expand);
 	return 0;
 }
@@ -413,7 +413,7 @@ static int batch_loose_object(const struct object_id *oid,
 			      const char *path,
 			      void *data)
 {
-	sha1_array_append(data, oid->hash);
+	oid_array_append(data, oid);
 	return 0;
 }
 
@@ -422,7 +422,7 @@ static int batch_packed_object(const struct object_id *oid,
 			       uint32_t pos,
 			       void *data)
 {
-	sha1_array_append(data, oid->hash);
+	oid_array_append(data, oid);
 	return 0;
 }
 
@@ -462,17 +462,17 @@ static int batch_objects(struct batch_options *opt)
 		data.info.typep = &data.type;
 
 	if (opt->all_objects) {
-		struct sha1_array sa = SHA1_ARRAY_INIT;
+		struct oid_array sa = OID_ARRAY_INIT;
 		struct object_cb_data cb;
 
 		for_each_loose_object(batch_loose_object, &sa, 0);
 		for_each_packed_object(batch_packed_object, &sa, 0);
 
 		cb.opt = opt;
 		cb.expand = &data;
-		sha1_array_for_each_unique(&sa, batch_object_cb, &cb);
+		oid_array_for_each_unique(&sa, batch_object_cb, &cb);
 
-		sha1_array_clear(&sa);
+		oid_array_clear(&sa);
 		return 0;
 	}