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[PATCH v12 06/13] apply: make it possible to silently apply

From
Christian Couder <christian.couder@gmail.com>
Date
Aug 11, 2016, 18:44 UTC
Message-ID
<20160811184501.384-7-chriscool@tuxfamily.org>
In-Reply-To
<20160811184501.384-1-chriscool@tuxfamily.org>

This changes 'int apply_verbosely' into 'enum apply_verbosity', and changes the possible values of the variable from a bool to a tristate.

The previous 'false' state is changed into 'verbosity_normal'. The previous 'true' state is changed into 'verbosity_verbose'.

The new added state is 'verbosity_silent'. It should prevent anything to be printed on both stderr and stdout.

This is needed because `git am` wants to first call apply functionality silently, if it can then fall back on 3-way merge in case of error.

Printing on stdout, and calls to warning() or error() are not taken care of in this patch, as that will be done in following patches.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
---
 apply.c         | 62 +++++++++++++++++++++++++++++++++++++--------------------
 apply.h         |  8 +++++++-
 builtin/apply.c |  2 +-
 3 files changed, 48 insertions(+), 24 deletions(-)
diff --git a/apply.c b/apply.c
index 41a33d3..df85cbc 100644
--- a/apply.c
+++ b/apply.c
@@ -125,8 +125,11 @@ int check_apply_state(struct apply_state *state, int force_apply)
 			return error(_("--3way outside a repository"));
 		state->check_index = 1;
 	}
-	if (state->apply_with_reject)
-		state->apply = state->apply_verbosely = 1;
+	if (state->apply_with_reject) {
+		state->apply = 1;
+		if (state->apply_verbosity == verbosity_normal)
+			state->apply_verbosity = verbosity_verbose;
+	}
 	if (!force_apply && (state->diffstat || state->numstat || state->summary || state->check || state->fake_ancestor))
 		state->apply = 0;
 	if (state->check_index && is_not_gitdir)
@@ -1620,8 +1623,9 @@ static void record_ws_error(struct apply_state *state,
 		return;
 
 	err = whitespace_error_string(result);
-	fprintf(stderr, "%s:%d: %s.\n%.*s\n",
-		state->patch_input_file, linenr, err, len, line);
+	if (state->apply_verbosity > verbosity_silent)
+		fprintf(stderr, "%s:%d: %s.\n%.*s\n",
+			state->patch_input_file, linenr, err, len, line);
 	free(err);
 }
 
@@ -1816,7 +1820,7 @@ static int parse_single_patch(struct apply_state *state,
 		return error(_("new file %s depends on old contents"), patch->new_name);
 	if (0 < patch->is_delete && newlines)
 		return error(_("deleted file %s still has contents"), patch->old_name);
-	if (!patch->is_delete && !newlines && context)
+	if (!patch->is_delete && !newlines && context && state->apply_verbosity > verbosity_silent)
 		fprintf_ln(stderr,
 			   _("** warning: "
 			     "file %s becomes empty but is not deleted"),
@@ -2911,7 +2915,7 @@ static int apply_one_fragment(struct apply_state *state,
 			/* Ignore it, we already handled it */
 			break;
 		default:
-			if (state->apply_verbosely)
+			if (state->apply_verbosity > verbosity_normal)
 				error(_("invalid start of line: '%c'"), first);
 			applied_pos = -1;
 			goto out;
@@ -3026,7 +3030,7 @@ static int apply_one_fragment(struct apply_state *state,
 				state->apply = 0;
 		}
 
-		if (state->apply_verbosely && applied_pos != pos) {
+		if (state->apply_verbosity > verbosity_normal && applied_pos != pos) {
 			int offset = applied_pos - pos;
 			if (state->apply_in_reverse)
 				offset = 0 - offset;
@@ -3041,14 +3045,14 @@ static int apply_one_fragment(struct apply_state *state,
 		 * Warn if it was necessary to reduce the number
 		 * of context lines.
 		 */
-		if ((leading != frag->leading) ||
-		    (trailing != frag->trailing))
+		if ((leading != frag->leading ||
+		     trailing != frag->trailing) && state->apply_verbosity > verbosity_silent)
 			fprintf_ln(stderr, _("Context reduced to (%ld/%ld)"
 					     " to apply fragment at %d"),
 				   leading, trailing, applied_pos+1);
 		update_image(state, img, applied_pos, &preimage, &postimage);
 	} else {
-		if (state->apply_verbosely)
+		if (state->apply_verbosity > verbosity_normal)
 			error(_("while searching for:\n%.*s"),
 			      (int)(old - oldlines), oldlines);
 	}
@@ -3539,7 +3543,8 @@ static int try_threeway(struct apply_state *state,
 		 read_blob_object(&buf, pre_sha1, patch->old_mode))
 		return error("repository lacks the necessary blob to fall back on 3-way merge.");
 
-	fprintf(stderr, "Falling back to three-way merge...\n");
+	if (state->apply_verbosity > verbosity_silent)
+		fprintf(stderr, "Falling back to three-way merge...\n");
 
 	img = strbuf_detach(&buf, &len);
 	prepare_image(&tmp_image, img, len, 1);
@@ -3569,7 +3574,9 @@ static int try_threeway(struct apply_state *state,
 	status = three_way_merge(image, patch->new_name,
 				 pre_sha1, our_sha1, post_sha1);
 	if (status < 0) {
-		fprintf(stderr, "Failed to fall back on three-way merge...\n");
+		if (state->apply_verbosity > verbosity_silent)
+			fprintf(stderr,
+				"Failed to fall back on three-way merge...\n");
 		return status;
 	}
 
@@ -3581,9 +3588,15 @@ static int try_threeway(struct apply_state *state,
 			hashcpy(patch->threeway_stage[0].hash, pre_sha1);
 		hashcpy(patch->threeway_stage[1].hash, our_sha1);
 		hashcpy(patch->threeway_stage[2].hash, post_sha1);
-		fprintf(stderr, "Applied patch to '%s' with conflicts.\n", patch->new_name);
+		if (state->apply_verbosity > verbosity_silent)
+			fprintf(stderr,
+				"Applied patch to '%s' with conflicts.\n",
+				patch->new_name);
 	} else {
-		fprintf(stderr, "Applied patch to '%s' cleanly.\n", patch->new_name);
+		if (state->apply_verbosity > verbosity_silent)
+			fprintf(stderr,
+				"Applied patch to '%s' cleanly.\n",
+				patch->new_name);
 	}
 	return 0;
 }
@@ -3956,7 +3969,7 @@ static int check_patch_list(struct apply_state *state, struct patch *patch)
 	prepare_fn_table(state, patch);
 	while (patch) {
 		int res;
-		if (state->apply_verbosely)
+		if (state->apply_verbosity > verbosity_normal)
 			say_patch_name(stderr,
 				       _("Checking patch %s..."), patch);
 		res = check_patch(state, patch);
@@ -4472,7 +4485,7 @@ static int write_out_one_reject(struct apply_state *state, struct patch *patch)
 	}
 
 	if (!cnt) {
-		if (state->apply_verbosely)
+		if (state->apply_verbosity > verbosity_normal)
 			say_patch_name(stderr,
 				       _("Applied patch %s cleanly."), patch);
 		return 0;
@@ -4489,7 +4502,8 @@ static int write_out_one_reject(struct apply_state *state, struct patch *patch)
 			    "Applying patch %%s with %d rejects...",
 			    cnt),
 		    cnt);
-	say_patch_name(stderr, sb.buf, patch);
+	if (state->apply_verbosity > verbosity_silent)
+		say_patch_name(stderr, sb.buf, patch);
 	strbuf_release(&sb);
 
 	cnt = strlen(patch->new_name);
@@ -4516,10 +4530,12 @@ static int write_out_one_reject(struct apply_state *state, struct patch *patch)
 	     frag;
 	     cnt++, frag = frag->next) {
 		if (!frag->rejected) {
-			fprintf_ln(stderr, _("Hunk #%d applied cleanly."), cnt);
+			if (state->apply_verbosity > verbosity_silent)
+				fprintf_ln(stderr, _("Hunk #%d applied cleanly."), cnt);
 			continue;
 		}
-		fprintf_ln(stderr, _("Rejected hunk #%d."), cnt);
+		if (state->apply_verbosity > verbosity_silent)
+			fprintf_ln(stderr, _("Rejected hunk #%d."), cnt);
 		fprintf(rej, "%.*s", frag->size, frag->patch);
 		if (frag->patch[frag->size-1] != '\n')
 			fputc('\n', rej);
@@ -4568,8 +4584,10 @@ static int write_out_results(struct apply_state *state, struct patch *list)
 		struct string_list_item *item;
 
 		string_list_sort(&cpath);
-		for_each_string_list_item(item, &cpath)
-			fprintf(stderr, "U %s\n", item->string);
+		if (state->apply_verbosity > verbosity_silent) {
+			for_each_string_list_item(item, &cpath)
+				fprintf(stderr, "U %s\n", item->string);
+		}
 		string_list_clear(&cpath, 0);
 
 		rerere(0);
@@ -4626,7 +4644,7 @@ static int apply_patch(struct apply_state *state,
 			listp = &patch->next;
 		}
 		else {
-			if (state->apply_verbosely)
+			if (state->apply_verbosity > verbosity_normal)
 				say_patch_name(stderr, _("Skipped patch '%s'."), patch);
 			free_patch(patch);
 			skipped_patch++;
diff --git a/apply.h b/apply.h
index df44b51..bd4eb6d 100644
--- a/apply.h
+++ b/apply.h
@@ -13,6 +13,12 @@ enum apply_ws_ignore {
 	ignore_ws_change
 };
 
+enum apply_verbosity {
+	verbosity_silent = -1,
+	verbosity_normal = 0,
+	verbosity_verbose = 1
+};
+
 /*
  * We need to keep track of how symlinks in the preimage are
  * manipulated by the patches.  A patch to add a/b/c where a/b
@@ -51,13 +57,13 @@ struct apply_state {
 	int allow_overlap;
 	int apply_in_reverse;
 	int apply_with_reject;
-	int apply_verbosely;
 	int no_add;
 	int threeway;
 	int unidiff_zero;
 	int unsafe_paths;
 
 	/* Other non boolean parameters */
+	enum apply_verbosity apply_verbosity;
 	const char *fake_ancestor;
 	const char *patch_input_file;
 	int line_termination;
diff --git a/builtin/apply.c b/builtin/apply.c
index 9c66474..7338701 100644
--- a/builtin/apply.c
+++ b/builtin/apply.c
@@ -74,7 +74,7 @@ int cmd_apply(int argc, const char **argv, const char *prefix)
 			N_("leave the rejected hunks in corresponding *.rej files")),
 		OPT_BOOL(0, "allow-overlap", &state.allow_overlap,
 			N_("allow overlapping hunks")),
-		OPT__VERBOSE(&state.apply_verbosely, N_("be verbose")),
+		OPT__VERBOSE(&state.apply_verbosity, N_("be verbose")),
 		OPT_BIT(0, "inaccurate-eof", &options,
 			N_("tolerate incorrectly detected missing new-line at the end of file"),
 			APPLY_OPT_INACCURATE_EOF),

-- 
2.9.2.769.gc0f0333
Previous: Christian CouderNext: Christian Couder
Message 5 of 15 in “libify apply and use lib in am, part 3”
  1. 00/13 libify apply and use lib in am, part 3Christian Couder, Aug 11, 2016
  2. 01/13 builtin/apply: rename option parsing functionsChristian Couder, Aug 11, 2016
  3. 02/13 apply: rename and move opt constants to apply.hChristian Couder, Aug 11, 2016
  4. 04/13 apply: make some parsing functions static againChristian Couder, Aug 11, 2016
  5. 06/13 apply: make it possible to silently applyChristian Couder, Aug 11, 2016
  6. 05/13 apply: use error_errno() where possibleChristian Couder, Aug 11, 2016
  7. 07/13 apply: don't print on stdout in verbosity_silent modeChristian Couder, Aug 11, 2016
  8. 09/13 usage: add get_error_routine() and get_warn_routine()Christian Couder, Aug 11, 2016
  9. 11/13 apply: refactor `git apply` option parsingChristian Couder, Aug 11, 2016
  10. 08/13 usage: add set_warn_routine()Christian Couder, Aug 11, 2016
  11. 10/13 apply: change error_routine when silentChristian Couder, Aug 11, 2016
  12. 13/13 builtin/am: use apply API in run_apply()Christian Couder, Aug 11, 2016
  13. 12/13 apply: learn to use a different index fileChristian Couder, Aug 11, 2016
  14. Junio C HamanoAug 11, 2016
  15. Christian CouderAug 26, 2016

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