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From: Emily Shaffer <emilyshaffer@google.com>
To: git@vger.kernel.org
Cc: Emily Shaffer <emilyshaffer@google.com>
Subject: [RFC PATCH v3 11/13] walken: add filtered object walk
Date: Mon,  1 Jul 2019 13:20:12 -0700	[thread overview]
Message-ID: <20190701202014.34480-12-emilyshaffer@google.com> (raw)
In-Reply-To: <20190701202014.34480-1-emilyshaffer@google.com>

Demonstrate how filter specs can be used when performing a revision walk
of all object types. In this case, tree depth is used. Contributors who
are following the revision walking tutorial will be encouraged to run
the revision walk with and without the filter in order to compare the
number of objects seen in each case.

Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
Change-Id: I6d22ba153c1afbc780c261c47f1fa03ea478b5ed
---
 builtin/walken.c | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/builtin/walken.c b/builtin/walken.c
index b613102cfb..7b46377a2e 100644
--- a/builtin/walken.c
+++ b/builtin/walken.c
@@ -12,6 +12,7 @@
 #include "pretty.h"
 #include "line-log.h"
 #include "list-objects.h"
+#include "list-objects-filter-options.h"
 #include "grep.h"
 
 
@@ -144,6 +145,8 @@ static void walken_show_object(struct object *obj, const char *str, void *buf)
  */
 static void walken_object_walk(struct rev_info *rev)
 {
+	struct list_objects_filter_options filter_options = {};
+
 	rev->tree_objects = 1;
 	rev->blob_objects = 1;
 	rev->tag_objects = 1;
@@ -158,7 +161,24 @@ static void walken_object_walk(struct rev_info *rev)
 	blob_count = 0;
 	tree_count = 0;
 
-	traverse_commit_list(rev, walken_show_commit, walken_show_object, NULL);
+	if (0) {
+		/* Unfiltered: */
+		trace_printf(_("Unfiltered object walk.\n"));
+		traverse_commit_list(rev, walken_show_commit,
+				walken_show_object, NULL);
+	} else {
+		trace_printf(_("Filtered object walk with filterspec "
+				"'tree:1'.\n"));
+		/*
+		 * We can parse a tree depth of 1 to demonstrate the kind of
+		 * filtering that could occur during various operations (see
+		 * `git help rev-list` and read the entry on `--filter`).
+		 */
+		parse_list_objects_filter(&filter_options, "tree:1");
+
+		traverse_commit_list_filtered(&filter_options, rev,
+			walken_show_commit, walken_show_object, NULL, NULL);
+	}
 
 	/*
 	 * This print statement is designed to be script-parseable. Script
-- 
2.22.0.410.gd8fdbe21b5-goog


  parent reply	other threads:[~2019-07-01 20:20 UTC|newest]

Thread overview: 102+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-07  1:07 [PATCH] documentation: add tutorial for revision walking Emily Shaffer
2019-06-07  1:07 ` [RFC PATCH 00/13] example implementation of revwalk tutorial Emily Shaffer
2019-06-07  1:07   ` [RFC PATCH 01/13] walken: add infrastructure for revwalk demo Emily Shaffer
2019-06-07  1:08   ` [RFC PATCH 02/13] walken: add usage to enable -h Emily Shaffer
2019-06-07  1:08   ` [RFC PATCH 03/13] walken: add placeholder to initialize defaults Emily Shaffer
2019-06-07  1:08   ` [RFC PATCH 04/13] walken: add handler to git_config Emily Shaffer
2019-06-07  1:08   ` [RFC PATCH 05/13] walken: configure rev_info and prepare for walk Emily Shaffer
2019-06-07  1:08   ` [RFC PATCH 06/13] walken: perform our basic revision walk Emily Shaffer
2019-06-07  1:08   ` [RFC PATCH 07/13] walken: filter for authors from gmail address Emily Shaffer
2019-06-07  1:08   ` [RFC PATCH 08/13] walken: demonstrate various topographical sorts Emily Shaffer
2019-06-07  1:08   ` [RFC PATCH 09/13] walken: demonstrate reversing a revision walk list Emily Shaffer
2019-06-07  1:08   ` [RFC PATCH 10/13] walken: add unfiltered object walk from HEAD Emily Shaffer
2019-06-07  1:08   ` [RFC PATCH 11/13] walken: add filtered object walk Emily Shaffer
2019-06-07 19:15     ` Jeff Hostetler
2019-06-17 20:30       ` Emily Shaffer
2019-06-07  1:08   ` [RFC PATCH 12/13] walken: count omitted objects Emily Shaffer
2019-06-07  1:08   ` [RFC PATCH 13/13] walken: reverse the object walk order Emily Shaffer
2019-06-07  6:21 ` [PATCH] documentation: add tutorial for revision walking Eric Sunshine
2019-06-10 21:26   ` Junio C Hamano
2019-06-10 21:38     ` Eric Sunshine
2019-06-17 23:19   ` Emily Shaffer
2019-06-19  8:13     ` Eric Sunshine
2019-06-19 23:35       ` Emily Shaffer
2019-06-23 18:54         ` Eric Sunshine
2019-06-10 20:25 ` Junio C Hamano
2019-06-17 23:50   ` Emily Shaffer
2019-06-19 15:17     ` Junio C Hamano
2019-06-20 21:06       ` Emily Shaffer
2019-07-13  0:39         ` Josh Steadmon
2019-07-16  0:06           ` Emily Shaffer
2019-07-16 17:24             ` Junio C Hamano
2019-06-10 20:49 ` Junio C Hamano
2019-06-17 23:33   ` Emily Shaffer
2019-06-26 23:49 ` [PATCH v2] " Emily Shaffer
2019-06-26 23:50   ` [RFC PATCH v2 00/13] example implementation of revwalk tutorial Emily Shaffer
2019-06-26 23:50     ` [RFC PATCH v2 01/13] walken: add infrastructure for revwalk demo Emily Shaffer
2019-06-26 23:50     ` [RFC PATCH v2 02/13] walken: add usage to enable -h Emily Shaffer
2019-06-27  4:47       ` Eric Sunshine
2019-06-27 18:40         ` Emily Shaffer
2019-06-27  4:50       ` Eric Sunshine
2019-06-26 23:50     ` [RFC PATCH v2 03/13] walken: add placeholder to initialize defaults Emily Shaffer
2019-06-26 23:50     ` [RFC PATCH v2 04/13] walken: add handler to git_config Emily Shaffer
2019-06-27  4:54       ` Eric Sunshine
2019-06-27 18:47         ` Emily Shaffer
2019-06-26 23:50     ` [RFC PATCH v2 05/13] walken: configure rev_info and prepare for walk Emily Shaffer
2019-06-27  5:06       ` Eric Sunshine
2019-06-27 18:56         ` Emily Shaffer
2019-06-26 23:50     ` [RFC PATCH v2 06/13] walken: perform our basic revision walk Emily Shaffer
2019-06-27  5:16       ` Eric Sunshine
2019-06-27 20:54         ` Emily Shaffer
2019-06-26 23:50     ` [RFC PATCH v2 07/13] walken: filter for authors from gmail address Emily Shaffer
2019-06-27  5:20       ` Eric Sunshine
2019-06-27 20:58         ` Emily Shaffer
2019-06-26 23:50     ` [RFC PATCH v2 08/13] walken: demonstrate various topographical sorts Emily Shaffer
2019-06-27  5:22       ` Eric Sunshine
2019-06-27 22:12         ` Emily Shaffer
2019-06-26 23:50     ` [RFC PATCH v2 09/13] walken: demonstrate reversing a revision walk list Emily Shaffer
2019-06-27  5:26       ` Eric Sunshine
2019-06-27 22:20         ` Emily Shaffer
2019-06-26 23:50     ` [RFC PATCH v2 10/13] walken: add unfiltered object walk from HEAD Emily Shaffer
2019-06-27  5:37       ` Eric Sunshine
2019-06-27 22:31         ` Emily Shaffer
2019-06-28  0:48           ` Eric Sunshine
2019-07-01 19:19             ` Emily Shaffer
2019-06-26 23:50     ` [RFC PATCH v2 11/13] walken: add filtered object walk Emily Shaffer
2019-06-27  5:42       ` Eric Sunshine
2019-06-27 22:33         ` Emily Shaffer
2019-06-26 23:50     ` [RFC PATCH v2 12/13] walken: count omitted objects Emily Shaffer
2019-06-27  5:44       ` Eric Sunshine
2019-06-26 23:50     ` [RFC PATCH v2 13/13] walken: reverse the object walk order Emily Shaffer
2019-06-27 22:56     ` [RFC PATCH v2 00/13] example implementation of revwalk tutorial Emily Shaffer
2019-07-01 20:19   ` [PATCH v3] documentation: add tutorial for revision walking Emily Shaffer
2019-07-01 20:20     ` [RFC PATCH v3 00/13] example implementation of revwalk tutorial Emily Shaffer
2019-07-01 20:20       ` [RFC PATCH v3 01/13] walken: add infrastructure for revwalk demo Emily Shaffer
2019-07-01 20:20       ` [RFC PATCH v3 02/13] walken: add usage to enable -h Emily Shaffer
2019-07-01 20:20       ` [RFC PATCH v3 03/13] walken: add placeholder to initialize defaults Emily Shaffer
2019-07-01 20:20       ` [RFC PATCH v3 04/13] walken: add handler to git_config Emily Shaffer
2019-07-01 20:20       ` [RFC PATCH v3 05/13] walken: configure rev_info and prepare for walk Emily Shaffer
2019-07-01 20:20       ` [RFC PATCH v3 06/13] walken: perform our basic revision walk Emily Shaffer
2019-07-01 20:20       ` [RFC PATCH v3 07/13] walken: filter for authors from gmail address Emily Shaffer
2019-07-01 20:20       ` [RFC PATCH v3 08/13] walken: demonstrate various topographical sorts Emily Shaffer
2019-07-01 20:20       ` [RFC PATCH v3 09/13] walken: demonstrate reversing a revision walk list Emily Shaffer
2019-07-01 20:20       ` [RFC PATCH v3 10/13] walken: add unfiltered object walk from HEAD Emily Shaffer
2019-07-01 20:20       ` Emily Shaffer [this message]
2019-07-01 20:20       ` [RFC PATCH v3 12/13] walken: count omitted objects Emily Shaffer
2019-07-01 20:20       ` [RFC PATCH v3 13/13] walken: reverse the object walk order Emily Shaffer
2019-07-25  9:25       ` [RFC PATCH v3 00/13] example implementation of revwalk tutorial Johannes Schindelin
2019-08-06 23:13         ` Emily Shaffer
2019-08-08 19:19           ` Johannes Schindelin
2019-07-24 23:11     ` [PATCH v3] documentation: add tutorial for revision walking Josh Steadmon
2019-07-24 23:32     ` Jonathan Tan
2019-08-06 23:10       ` Emily Shaffer
2019-08-06 23:19     ` [PATCH v4] " Emily Shaffer
2019-08-07 19:19       ` Junio C Hamano
2019-08-14 18:33         ` Emily Shaffer
2019-08-14 19:18           ` Junio C Hamano
2019-10-10 15:19       ` [PATCH v5] documentation: add tutorial for object walking Emily Shaffer
2019-10-11  5:50         ` Junio C Hamano
2019-10-11 23:26           ` Emily Shaffer
2019-10-11 17:50         ` SZEDER Gábor
2019-10-11 23:33           ` Emily Shaffer
2019-10-11 23:55         ` [PATCH v6] " Emily Shaffer

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