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[PATCH v12 2/8] diff.c: remove output_prefix_length field

From
Jacob Keller <jacob.e.keller@intel.com>
Date
Aug 31, 2016, 23:27 UTC
Message-ID
<20160831232725.28205-3-jacob.e.keller@intel.com>
In-Reply-To
<20160831232725.28205-1-jacob.e.keller@intel.com>
From: Junio C Hamano <gitster@pobox.com>

"diff/log --stat" has a logic that determines the display columns available for the diffstat part of the output and apportions it for pathnames and diffstat graph automatically.

5e71a84a (Add output_prefix_length to diff_options, 2012-04-16) added the output_prefix_length field to diff_options structure to allow this logic to subtract the display columns used for the history graph part from the total "terminal width"; this matters when the "git log --graph -p" option is in use.

The field must be set to the number of display columns needed to show the output from the output_prefix() callback, which is error prone. As there is only one user of the field, and the user has the actual value of the prefix string, let's get rid of the field and have the user count the display width itself.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 diff.c  | 2 +-
 diff.h  | 1 -
 graph.c | 2 --
 3 files changed, 1 insertion(+), 4 deletions(-)
diff --git a/diff.c b/diff.c
index b43d3dd2ecb7..ae069c303077 100644
--- a/diff.c
+++ b/diff.c
@@ -1625,7 +1625,7 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
 	 */
 
 	if (options->stat_width == -1)
-		width = term_columns() - options->output_prefix_length;
+		width = term_columns() - strlen(line_prefix);
 	else
 		width = options->stat_width ? options->stat_width : 80;
 	number_width = decimal_width(max_change) > number_width ?
diff --git a/diff.h b/diff.h
index 125447be09eb..49e4aaafb2da 100644
--- a/diff.h
+++ b/diff.h
@@ -174,7 +174,6 @@ struct diff_options {
 	diff_format_fn_t format_callback;
 	void *format_callback_data;
 	diff_prefix_fn_t output_prefix;
-	int output_prefix_length;
 	void *output_prefix_data;
 
 	int diff_path_counter;
diff --git a/graph.c b/graph.c
index dd1720148dc5..a46803840511 100644
--- a/graph.c
+++ b/graph.c
@@ -197,7 +197,6 @@ static struct strbuf *diff_output_prefix_callback(struct diff_options *opt, void
 	assert(opt);
 	assert(graph);
 
-	opt->output_prefix_length = graph->width;
 	strbuf_reset(&msgbuf);
 	graph_padding_line(graph, &msgbuf);
 	return &msgbuf;
@@ -245,7 +244,6 @@ struct git_graph *graph_init(struct rev_info *opt)
 	 */
 	opt->diffopt.output_prefix = diff_output_prefix_callback;
 	opt->diffopt.output_prefix_data = graph;
-	opt->diffopt.output_prefix_length = 0;
 
 	return graph;
 }
-- 
2.10.0.rc2.311.g2bd286e
Previous: Jacob KellerNext: Stefan Beller
Message 21 of 23 in “submodule inline diff format”
  1. 0/8 submodule inline diff formatJacob Keller, Aug 31, 2016
  2. 1/8 cache: add empty_tree_oid object and helper functionJacob Keller, Aug 31, 2016
  3. 8/8 diff: teach diff to display submodule difference with an inline diffJacob Keller, Aug 31, 2016
  4. 7/8 submodule: refactor show_submodule_summary with helper functionJacob Keller, Aug 31, 2016
  5. 6/8 submodule: convert show_submodule_summary to use struct object_id *Jacob Keller, Aug 31, 2016
  6. 5/8 allow do_submodule_path to work even if submodule isn't checked outJacob Keller, Aug 31, 2016
  7. 4/8 diff: prepare for additional submodule formatsJacob Keller, Aug 31, 2016
  8. 3/8 graph: add support for --line-prefix on all graph-aware outputJacob Keller, Aug 31, 2016
  9. Dennis KaarsemakerOct 19, 2016
  10. rev-list: restore the NUL commit separator in --header modeDennis Kaarsemaker, Oct 19, 2016
  11. Jacob KellerOct 19, 2016
  12. Junio C HamanoOct 19, 2016
  13. Keller, Jacob EOct 20, 2016
  14. Dennis KaarsemakerOct 20, 2016
  15. Junio C HamanoOct 19, 2016
  16. Dennis KaarsemakerOct 20, 2016
  17. Jacob KellerOct 20, 2016
  18. Junio C HamanoOct 20, 2016
  19. Torsten BögershausenOct 20, 2016
  20. Jacob KellerOct 19, 2016
  21. 2/8 diff.c: remove output_prefix_length fieldJacob Keller, Aug 31, 2016
  22. Stefan BellerAug 31, 2016
  23. Junio C HamanoSep 1, 2016

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