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-rw-r--r--Documentation/diff-options.txt3
-rw-r--r--diff.c10
-rw-r--r--diff.h1
3 files changed, 13 insertions, 1 deletions
diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt
index 6e268326d..7788d4fa4 100644
--- a/Documentation/diff-options.txt
+++ b/Documentation/diff-options.txt
@@ -65,6 +65,9 @@ endif::git-format-patch[]
can be set with "--dirstat=limit". Changes in a child directory is not
counted for the parent directory, unless "--cumulative" is used.
+--dirstat-by-file[=limit]::
+ Same as --dirstat, but counts changed files instead of lines.
+
--summary::
Output a condensed summary of extended header information
such as creations, renames and mode changes.
diff --git a/diff.c b/diff.c
index 9053d4d1f..a2f4850d4 100644
--- a/diff.c
+++ b/diff.c
@@ -1131,9 +1131,13 @@ static void show_dirstat(struct diff_options *options)
/*
* Original minus copied is the removed material,
* added is the new material. They are both damages
- * made to the preimage.
+ * made to the preimage. In --dirstat-by-file mode, count
+ * damaged files, not damaged lines. This is done by
+ * counting only a single damaged line per file.
*/
damage = (p->one->size - copied) + added;
+ if (DIFF_OPT_TST(options, DIRSTAT_BY_FILE) && damage > 0)
+ damage = 1;
ALLOC_GROW(dir.files, dir.nr + 1, dir.alloc);
dir.files[dir.nr].name = name;
@@ -2511,6 +2515,10 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
else if (!strcmp(arg, "--cumulative")) {
options->output_format |= DIFF_FORMAT_DIRSTAT;
DIFF_OPT_SET(options, DIRSTAT_CUMULATIVE);
+ } else if (opt_arg(arg, 0, "dirstat-by-file",
+ &options->dirstat_percent)) {
+ options->output_format |= DIFF_FORMAT_DIRSTAT;
+ DIFF_OPT_SET(options, DIRSTAT_BY_FILE);
}
else if (!strcmp(arg, "--check"))
options->output_format |= DIFF_FORMAT_CHECKDIFF;
diff --git a/diff.h b/diff.h
index 1ca4f4628..a49d865bd 100644
--- a/diff.h
+++ b/diff.h
@@ -64,6 +64,7 @@ typedef void (*diff_format_fn_t)(struct diff_queue_struct *q,
#define DIFF_OPT_RELATIVE_NAME (1 << 17)
#define DIFF_OPT_IGNORE_SUBMODULES (1 << 18)
#define DIFF_OPT_DIRSTAT_CUMULATIVE (1 << 19)
+#define DIFF_OPT_DIRSTAT_BY_FILE (1 << 20)
#define DIFF_OPT_TST(opts, flag) ((opts)->flags & DIFF_OPT_##flag)
#define DIFF_OPT_SET(opts, flag) ((opts)->flags |= DIFF_OPT_##flag)
#define DIFF_OPT_CLR(opts, flag) ((opts)->flags &= ~DIFF_OPT_##flag)