git-apply --verbose

Signed-off-by: Junio C Hamano <junkio@cox.net>

builtin-apply.c

@@ -39,12 +39,13 @@ static int check;
 static int apply = 1;
 static int apply_in_reverse;
 static int apply_with_reject;
+static int apply_verbosely;
 static int no_add;
 static int show_index_info;
 static int line_termination = '\n';
 static unsigned long p_context = -1;
 static const char apply_usage[] =
-"git-apply [--stat] [--numstat] [--summary] [--check] [--index] [--cached] [--apply] [--no-add] [--index-info] [--allow-binary-replacement] [--reverse] [--reject] [-z] [-pNUM] [-CNUM] [--whitespace=<nowarn|warn|error|error-all|strip>] <patch>...";
+"git-apply [--stat] [--numstat] [--summary] [--check] [--index] [--cached] [--apply] [--no-add] [--index-info] [--allow-binary-replacement] [--reverse] [--reject] [--verbose] [-z] [-pNUM] [-CNUM] [--whitespace=<nowarn|warn|error|error-all|strip>] <patch>...";
 
 static enum whitespace_eol {
 	nowarn_whitespace,
@@ -153,6 +154,24 @@ struct patch {
 	struct patch *next;
 };
 
+static void say_patch_name(FILE *output, const char *pre, struct patch *patch, const char *post)
+{
+	fputs(pre, output);
+	if (patch->old_name && patch->new_name &&
+	    strcmp(patch->old_name, patch->new_name)) {
+		write_name_quoted(NULL, 0, patch->old_name, 1, output);
+		fputs(" => ", output);
+		write_name_quoted(NULL, 0, patch->new_name, 1, output);
+	}
+	else {
+		const char *n = patch->new_name;
+		if (!n)
+			n = patch->old_name;
+		write_name_quoted(NULL, 0, n, 1, output);
+	}
+	fputs(post, output);
+}
+
 #define CHUNKSIZE (8192)
 #define SLOP (16)
 
@@ -1928,6 +1947,9 @@ static int check_patch_list(struct patch *patch)
 	int error = 0;
 
 	for (prev_patch = NULL; patch ; patch = patch->next) {
+		if (apply_verbosely)
+			say_patch_name(stderr,
+				       "Checking patch ", patch, "...\n");
 		error |= check_patch(patch, prev_patch);
 		prev_patch = patch;
 	}
@@ -2253,8 +2275,12 @@ static int write_out_one_reject(struct patch *patch)
 		cnt++;
 	}
 
-	if (!cnt)
+	if (!cnt) {
+		if (apply_verbosely)
+			say_patch_name(stderr,
+				       "Applied patch ", patch, " cleanly.\n");
 		return 0;
+	}
 
 	/* This should not happen, because a removal patch that leaves
 	 * contents are marked "rejected" at the patch level.
@@ -2262,6 +2288,10 @@ static int write_out_one_reject(struct patch *patch)
 	if (!patch->new_name)
 		die("internal error");
 
+	/* Say this even without --verbose */
+	say_patch_name(stderr, "Applying patch ", patch, " with");
+	fprintf(stderr, " %d rejects...\n", cnt);
+
 	cnt = strlen(patch->new_name);
 	if (ARRAY_SIZE(namebuf) <= cnt + 5) {
 		cnt = ARRAY_SIZE(namebuf) - 5;
@@ -2530,6 +2560,10 @@ int cmd_apply(int argc, const char **argv, const char *prefix)
 			apply = apply_with_reject = 1;
 			continue;
 		}
+		if (!strcmp(arg, "--verbose")) {
+			apply_verbosely = 1;
+			continue;
+		}
 		if (!strcmp(arg, "--inaccurate-eof")) {
 			inaccurate_eof = 1;
 			continue;

t/t4117-apply-reject.sh

@@ -57,6 +57,17 @@ test_expect_success 'apply without --reject should fail' '
 	diff -u file1 saved.file1
 '
 
+test_expect_success 'apply without --reject should fail' '
+
+	if git apply --verbose patch.1
+	then
+		echo "Eh? Why?"
+		exit 1
+	fi
+
+	diff -u file1 saved.file1
+'
+
 test_expect_success 'apply with --reject should fail but update the file' '
 
 	cat saved.file1 >file1 &&
@@ -106,4 +117,41 @@ test_expect_success 'apply with --reject should fail but update the file' '
 
 '
 
+test_expect_success 'the same test with --verbose' '
+
+	cat saved.file1 >file1 &&
+	rm -f file1.rej file2.rej file2 &&
+
+	if git apply --reject --verbose patch.2 >rejects
+	then
+		echo "succeeds with --reject?"
+		exit 1
+	fi
+
+	test -f file1 && {
+		echo "file1 still exists?"
+		exit 1
+	}
+	diff -u file2 expected &&
+
+	cat file2.rej &&
+
+	if test -f file1.rej
+	then
+		echo "file2 should not have been touched"
+		exit 1
+	fi
+
+'
+
+test_expect_success 'apply cleanly with --verbose' '
+
+	git cat-file -p HEAD:file1 >file1 &&
+	rm -f file?.rej file2 &&
+
+	git apply --verbose patch.1 &&
+
+	diff -u file1 clean
+'
+
 test_done