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[PATCH v9 2/8] diff.c: remove output_prefix_length field

From
Jacob Keller <jacob.e.keller@intel.com>
Date
Aug 19, 2016, 23:34 UTC
Message-ID
<20160819233432.15188-3-jacob.e.keller@intel.com>
In-Reply-To
<20160819233432.15188-1-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 534c12e28ea8..50bef1f07658 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 7883729edf10..747a204d75a4 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.rc0.259.g83512d9
Previous: Jacob KellerNext: Jacob Keller
Message 5 of 12 in “submodule show inline diff”
  1. 0/8 submodule show inline diffJacob Keller, Aug 19, 2016
  2. 1/8 cache: add empty_tree_oid object and helper functionJacob Keller, Aug 19, 2016
  3. 5/8 submodule: allow add_submodule_odb to work even if path is not checked outJacob Keller, Aug 19, 2016
  4. 4/8 diff: prepare for additional submodule formatsJacob Keller, Aug 19, 2016
  5. 2/8 diff.c: remove output_prefix_length fieldJacob Keller, Aug 19, 2016
  6. 6/8 submodule: convert show_submodule_summary to use struct object_id *Jacob Keller, Aug 19, 2016
  7. 3/8 graph: add support for --line-prefix on all graph-aware outputJacob Keller, Aug 19, 2016
  8. 8/8 diff: teach diff to display submodule difference with an inline diffJacob Keller, Aug 19, 2016
  9. 7/8 submodule: refactor show_submodule_summary with helper functionJacob Keller, Aug 19, 2016
  10. Stefan BellerAug 20, 2016
  11. Jacob KellerAug 20, 2016
  12. Stefan BellerAug 22, 2016

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