Thread (42 messages) flat view 42 messages, 2 authors, 2016-09-06
STALE3659d

Revision v14 of 6 in this series.

Revisions (6)
  1. v6 [diff vs current]
  2. v7 [diff vs current]
  3. v8 [diff vs current]
  4. v9 [diff vs current]
  5. v10 [diff vs current]
  6. v14 current

[PATCH v14 25/41] builtin/apply: make write_out_results() return -1 on error

From: Christian Couder <hidden>
Date: 2016-09-04 20:20:03
Subsystem: the rest · Maintainer: Linus Torvalds

To libify `git apply` functionality we have to signal errors to the
caller instead of exit()ing.

To do that in a compatible manner with the rest of the error handling
in "builtin/apply.c", write_out_results() should return -1 instead of
calling exit().

Helped-by: Eric Sunshine [off-list ref]
Signed-off-by: Christian Couder <redacted>
---
 builtin/apply.c | 27 +++++++++++++++++++++------
 1 file changed, 21 insertions(+), 6 deletions(-)
diff --git a/builtin/apply.c b/builtin/apply.c
index 003acec..c787ead 100644
--- a/builtin/apply.c
+++ b/builtin/apply.c
@@ -4383,6 +4383,12 @@ static int write_out_one_reject(struct apply_state *state, struct patch *patch)
 	return -1;
 }
 
+/*
+ * Returns:
+ *  -1 if an error happened
+ *   0 if the patch applied cleanly
+ *   1 if the patch did not apply cleanly
+ */
 static int write_out_results(struct apply_state *state, struct patch *list)
 {
 	int phase;
@@ -4396,8 +4402,10 @@ static int write_out_results(struct apply_state *state, struct patch *list)
 			if (l->rejected)
 				errs = 1;
 			else {
-				if (write_out_one_result(state, l, phase))
-					exit(128);
+				if (write_out_one_result(state, l, phase)) {
+					string_list_clear(&cpath, 0);
+					return -1;
+				}
 				if (phase == 1) {
 					if (write_out_one_reject(state, l))
 						errs = 1;
@@ -4517,10 +4525,17 @@ static int apply_patch(struct apply_state *state,
 		}
 	}
 
-	if (state->apply && write_out_results(state, list)) {
-		/* with --3way, we still need to write the index out */
-		res = state->apply_with_reject ? -1 : 1;
-		goto end;
+	if (state->apply) {
+		int write_res = write_out_results(state, list);
+		if (write_res < 0) {
+			res = -128;
+			goto end;
+		}
+		if (write_res > 0) {
+			/* with --3way, we still need to write the index out */
+			res = state->apply_with_reject ? -1 : 1;
+			goto end;
+		}
 	}
 
 	if (state->fake_ancestor &&
-- 
2.10.0.41.g9df52c3
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