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From: mhagger@alum.mit.edu
To: Junio C Hamano <gitster@pobox.com>
Cc: git@vger.kernel.org, Jeff King <peff@peff.net>,
	Drew Northup <drew.northup@maine.edu>,
	Jakub Narebski <jnareb@gmail.com>,
	Heiko Voigt <hvoigt@hvoigt.net>,
	Johan Herland <johan@herland.net>,
	Julian Phillips <julian@quantumfyre.co.uk>,
	Michael Haggerty <mhagger@alum.mit.edu>
Subject: [PATCH v2 19/51] do_for_each_ref_in_arrays(): new function
Date: Mon, 12 Dec 2011 06:38:26 +0100	[thread overview]
Message-ID: <1323668338-1764-20-git-send-email-mhagger@alum.mit.edu> (raw)
In-Reply-To: <1323668338-1764-1-git-send-email-mhagger@alum.mit.edu>

From: Michael Haggerty <mhagger@alum.mit.edu>

Extract function do_for_each_ref_in_arrays() from do_for_each_ref().
The new function will be a useful building block for storing refs
hierarchically.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
---
 refs.c |   71 +++++++++++++++++++++++++++++++++++++--------------------------
 1 files changed, 42 insertions(+), 29 deletions(-)

diff --git a/refs.c b/refs.c
index bc14437..601665b 100644
--- a/refs.c
+++ b/refs.c
@@ -714,45 +714,58 @@ static int do_for_each_ref_in_array(struct ref_array *array, int offset,
 	return 0;
 }
 
-static int do_for_each_ref(const char *submodule, const char *base, each_ref_fn fn,
-			   int trim, int flags, void *cb_data)
+static int do_for_each_ref_in_arrays(struct ref_array *array1,
+				     struct ref_array *array2,
+				     const char *base, each_ref_fn fn, int trim,
+				     int flags, void *cb_data)
 {
-	int retval = 0, p = 0, l = 0;
-	struct ref_cache *refs = get_ref_cache(submodule);
-	struct ref_array *packed = get_packed_refs(refs);
-	struct ref_array *loose = get_loose_refs(refs);
+	int retval;
+	int i1 = 0, i2 = 0;
 
-	retval = do_for_each_ref_in_array(&extra_refs, 0,
-					  base, fn, trim, flags, cb_data);
-	if (retval)
-		goto end_each;
-
-	while (p < packed->nr && l < loose->nr) {
-		struct ref_entry *entry;
-		int cmp = strcmp(packed->refs[p]->name, loose->refs[l]->name);
-		if (!cmp) {
-			p++;
+	while (1) {
+		struct ref_entry *e1, *e2;
+		int cmp;
+		if (i1 == array1->nr) {
+			return do_for_each_ref_in_array(array2, i2,
+							base, fn, trim, flags, cb_data);
+		}
+		if (i2 == array2->nr) {
+			return do_for_each_ref_in_array(array1, i1,
+							base, fn, trim, flags, cb_data);
+		}
+		e1 = array1->refs[i1];
+		e2 = array2->refs[i2];
+		cmp = strcmp(e1->name, e2->name);
+		if (cmp == 0) {
+			/* Two refs with the same name; ignore the one from array1. */
+			i1++;
 			continue;
 		}
-		if (cmp > 0) {
-			entry = loose->refs[l++];
+		if (cmp < 0) {
+			retval = do_one_ref(base, fn, trim, flags, cb_data, e1);
+			i1++;
 		} else {
-			entry = packed->refs[p++];
+			retval = do_one_ref(base, fn, trim, flags, cb_data, e2);
+			i2++;
 		}
-		retval = do_one_ref(base, fn, trim, flags, cb_data, entry);
 		if (retval)
-			goto end_each;
+			return retval;
 	}
+}
 
-	if (l < loose->nr) {
-		retval = do_for_each_ref_in_array(loose, l,
-						  base, fn, trim, flags, cb_data);
-	} else {
-		retval = do_for_each_ref_in_array(packed, p,
-						  base, fn, trim, flags, cb_data);
-	}
+static int do_for_each_ref(const char *submodule, const char *base, each_ref_fn fn,
+			   int trim, int flags, void *cb_data)
+{
+	int retval = 0;
+	struct ref_cache *refs = get_ref_cache(submodule);
+
+	retval = do_for_each_ref_in_array(&extra_refs, 0,
+					  base, fn, trim, flags, cb_data);
+	if (!retval)
+		retval = do_for_each_ref_in_arrays(get_packed_refs(refs),
+						   get_loose_refs(refs),
+						   base, fn, trim, flags, cb_data);
 
-end_each:
 	current_ref = NULL;
 	return retval;
 }
-- 
1.7.8

  parent reply	other threads:[~2011-12-12  5:42 UTC|newest]

Thread overview: 79+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-12-12  5:38 [PATCH v2 00/51] ref-api-C and ref-api-D re-roll mhagger
2011-12-12  5:38 ` [PATCH v2 01/51] struct ref_entry: document name member mhagger
2011-12-12  5:38 ` [PATCH v2 02/51] refs: rename "refname" variables mhagger
2011-12-13  0:37   ` Junio C Hamano
2011-12-12  5:38 ` [PATCH v2 03/51] refs: rename parameters result -> sha1 mhagger
2011-12-12  5:38 ` [PATCH v2 04/51] clear_ref_array(): rename from free_ref_array() mhagger
2011-12-12  5:38 ` [PATCH v2 05/51] is_refname_available(): remove the "quiet" argument mhagger
2011-12-12  5:38 ` [PATCH v2 06/51] parse_ref_line(): add docstring mhagger
2011-12-12  5:38 ` [PATCH v2 07/51] add_ref(): " mhagger
2011-12-12  5:38 ` [PATCH v2 08/51] is_dup_ref(): extract function from sort_ref_array() mhagger
2011-12-12  8:33   ` Jeff King
2011-12-12 11:44     ` Michael Haggerty
2011-12-12 17:14       ` Junio C Hamano
2011-12-12 22:33   ` Junio C Hamano
2011-12-13  4:35     ` Michael Haggerty
2011-12-13  5:00       ` Michael Haggerty
2011-12-12  5:38 ` [PATCH v2 09/51] refs: change signatures of get_packed_refs() and get_loose_refs() mhagger
2011-12-12  5:38 ` [PATCH v2 10/51] get_ref_dir(): change signature mhagger
2011-12-12  5:38 ` [PATCH v2 11/51] resolve_gitlink_ref(): improve docstring mhagger
2011-12-12  5:38 ` [PATCH v2 12/51] Pass a (ref_cache *) to the resolve_gitlink_*() helper functions mhagger
2011-12-12  5:38 ` [PATCH v2 13/51] resolve_gitlink_ref_recursive(): change to work with struct ref_cache mhagger
2011-12-12  5:38 ` [PATCH v2 14/51] repack_without_ref(): remove temporary mhagger
2011-12-12  5:38 ` [PATCH v2 15/51] create_ref_entry(): extract function from add_ref() mhagger
2011-12-12  5:38 ` [PATCH v2 16/51] add_ref(): take a (struct ref_entry *) parameter mhagger
2011-12-12  5:38 ` [PATCH v2 17/51] do_for_each_ref(): correctly terminate while processesing extra_refs mhagger
2011-12-12 22:41   ` Junio C Hamano
2011-12-12  5:38 ` [PATCH v2 18/51] do_for_each_ref_in_array(): new function mhagger
2011-12-12  5:38 ` mhagger [this message]
2011-12-12  5:38 ` [PATCH v2 20/51] repack_without_ref(): reimplement using do_for_each_ref_in_array() mhagger
2011-12-12 22:44   ` Junio C Hamano
2011-12-12  5:38 ` [PATCH v2 21/51] names_conflict(): new function, extracted from is_refname_available() mhagger
2011-12-12  5:38 ` [PATCH v2 22/51] names_conflict(): simplify implementation mhagger
2011-12-12  5:38 ` [PATCH v2 23/51] is_refname_available(): reimplement using do_for_each_ref_in_array() mhagger
2011-12-12  5:38 ` [PATCH v2 24/51] refs.c: reorder definitions more logically mhagger
2011-12-12  5:38 ` [PATCH v2 25/51] free_ref_entry(): new function mhagger
2011-12-12  5:38 ` [PATCH v2 26/51] check_refname_component(): return 0 for zero-length components mhagger
2011-12-12  5:38 ` [PATCH v2 27/51] struct ref_entry: nest the value part in a union mhagger
2011-12-12  5:38 ` [PATCH v2 28/51] refs.c: rename ref_array -> ref_dir mhagger
2011-12-13  0:45   ` Junio C Hamano
2011-12-13  5:43     ` Michael Haggerty
2011-12-13  6:37       ` Junio C Hamano
2011-12-13 19:12         ` Michael Haggerty
2011-12-13 19:17           ` Junio C Hamano
2011-12-13 22:13           ` Michael Haggerty
2011-12-13 23:24             ` Junio C Hamano
2011-12-14  0:19               ` Junio C Hamano
2011-12-14  2:33                 ` Jeff King
2011-12-15  8:19                   ` Michael Haggerty
2011-12-15  8:37                     ` Jeff King
2012-01-17 15:07               ` Michael Haggerty
2012-02-10 14:51                 ` Michael Haggerty
2012-02-10 20:44                   ` Jeff King
2012-02-10 21:17                     ` Junio C Hamano
2012-02-11  6:33                       ` Michael Haggerty
2011-12-12  5:38 ` [PATCH v2 29/51] refs: store references hierarchically mhagger
2011-12-12  5:38 ` [PATCH v2 30/51] sort_ref_dir(): do not sort if already sorted mhagger
2011-12-12 23:26   ` Junio C Hamano
2011-12-12  5:38 ` [PATCH v2 31/51] refs: sort ref_dirs lazily mhagger
2011-12-12  5:38 ` [PATCH v2 32/51] do_for_each_ref(): only iterate over the subtree that was requested mhagger
2011-12-12  5:38 ` [PATCH v2 33/51] get_ref_dir(): keep track of the current ref_dir mhagger
2011-12-12  5:38 ` [PATCH v2 34/51] refs: wrap top-level ref_dirs in ref_entries mhagger
2011-12-12  5:38 ` [PATCH v2 35/51] get_packed_refs(): return (ref_entry *) instead of (ref_dir *) mhagger
2011-12-12  5:38 ` [PATCH v2 36/51] get_loose_refs(): " mhagger
2011-12-12  5:38 ` [PATCH v2 37/51] is_refname_available(): take " mhagger
2011-12-12  5:38 ` [PATCH v2 38/51] find_ref(): " mhagger
2011-12-12  5:38 ` [PATCH v2 39/51] read_packed_refs(): " mhagger
2011-12-12  5:38 ` [PATCH v2 40/51] add_ref(): " mhagger
2011-12-12  5:38 ` [PATCH v2 41/51] find_containing_direntry(): use " mhagger
2011-12-12  5:38 ` [PATCH v2 42/51] search_ref_dir(): take " mhagger
2011-12-12  5:38 ` [PATCH v2 43/51] add_entry(): " mhagger
2011-12-12  5:38 ` [PATCH v2 44/51] do_for_each_ref_in_dir*(): " mhagger
2011-12-12  5:38 ` [PATCH v2 45/51] sort_ref_dir(): " mhagger
2011-12-12  5:38 ` [PATCH v2 46/51] struct ref_dir: store a reference to the enclosing ref_cache mhagger
2011-12-12  5:38 ` [PATCH v2 47/51] read_loose_refs(): take a (ref_entry *) as argument mhagger
2011-12-12  5:38 ` [PATCH v2 48/51] refs: read loose references lazily mhagger
2011-12-12  5:38 ` [PATCH v2 49/51] is_refname_available(): query only possibly-conflicting references mhagger
2011-12-12  5:38 ` [PATCH v2 50/51] read_packed_refs(): keep track of the directory being worked in mhagger
2011-12-12  5:38 ` [PATCH v2 51/51] repack_without_ref(): call clear_packed_ref_cache() mhagger
2011-12-12  8:24 ` [PATCH v2 00/51] ref-api-C and ref-api-D re-roll Junio C Hamano

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