[RFC/PATCH 02/18] revert: change many die() calls into "return error()" calls

[Christian Couder <chriscool@tuxfamily.org>]

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
---
 builtin/revert.c |   43 ++++++++++++++++++++++---------------------
 1 files changed, 22 insertions(+), 21 deletions(-)

diff --git a/builtin/revert.c b/builtin/revert.c
index bb6e9e8..9649d37 100644
--- a/builtin/revert.c
+++ b/builtin/revert.c
@@ -280,16 +280,18 @@ static struct tree *empty_tree(void)
 	return tree;
 }
 
-static NORETURN void die_dirty_index(const char *me)
+static int error_dirty_index(const char *me)
 {
 	if (read_cache_unmerged()) {
-		die_resolve_conflict(me);
+		return error_resolve_conflict(me);
 	} else {
 		if (advice_commit_before_merge)
-			die("Your local changes would be overwritten by %s.\n"
-			    "Please, commit your changes or stash them to proceed.", me);
+			return error("Your local changes would be overwritten "
+				     "by %s.\nPlease, commit your changes or "
+				     "stash them to proceed.", me);
 		else
-			die("Your local changes would be overwritten by %s.\n", me);
+			return error("Your local changes would be overwritten "
+				     "by %s.\n", me);
 	}
 }
 
@@ -339,7 +341,7 @@ static int do_recursive_merge(struct commit *base, struct commit *next,
 	if (active_cache_changed &&
 	    (write_cache(index_fd, active_cache, active_nr) ||
 	     commit_locked_index(&index_lock)))
-		die("%s: Unable to write new index file", me);
+		return error("%s: Unable to write new index file", me);
 	rollback_lock_file(&index_lock);
 
 	if (!clean) {
@@ -405,18 +407,18 @@ static int do_pick_commit(void)
 		 * to work on.
 		 */
 		if (write_cache_as_tree(head, 0, NULL))
-			die ("Your index file is unmerged.");
+			return error("Your index file is unmerged.");
 	} else {
 		if (get_sha1("HEAD", head))
-			die ("You do not have a valid HEAD");
+			return error("You do not have a valid HEAD");
 		if (index_differs_from("HEAD", 0))
-			die_dirty_index(me);
+			return error_dirty_index(me);
 	}
 	discard_cache();
 
 	if (!commit->parents) {
 		if (action == REVERT)
-			die ("Cannot revert a root commit");
+			return error("Cannot revert a root commit");
 		parent = NULL;
 	}
 	else if (commit->parents->next) {
@@ -425,20 +427,19 @@ static int do_pick_commit(void)
 		struct commit_list *p;
 
 		if (!mainline)
-			die("Commit %s is a merge but no -m option was given.",
-			    sha1_to_hex(commit->object.sha1));
-
+			return error("Commit %s is a merge but no -m option "
+				     "was given.", sha1_to_hex(commit->object.sha1));
 		for (cnt = 1, p = commit->parents;
 		     cnt != mainline && p;
 		     cnt++)
 			p = p->next;
 		if (cnt != mainline || !p)
-			die("Commit %s does not have parent %d",
-			    sha1_to_hex(commit->object.sha1), mainline);
+			return error("Commit %s does not have parent %d",
+				     sha1_to_hex(commit->object.sha1), mainline);
 		parent = p->item;
 	} else if (0 < mainline)
-		die("Mainline was specified but commit %s is not a merge.",
-		    sha1_to_hex(commit->object.sha1));
+		return error("Mainline was specified but commit %s is not a merge.",
+			     sha1_to_hex(commit->object.sha1));
 	else
 		parent = commit->parents->item;
 
@@ -446,12 +447,12 @@ static int do_pick_commit(void)
 		return fast_forward_to(commit->object.sha1, head);
 
 	if (parent && parse_commit(parent) < 0)
-		die("%s: cannot parse parent commit %s",
-		    me, sha1_to_hex(parent->object.sha1));
+		return error("%s: cannot parse parent commit %s",
+			     me, sha1_to_hex(parent->object.sha1));
 
 	if (get_message(commit->buffer, &msg) != 0)
-		die("Cannot get commit message for %s",
-				sha1_to_hex(commit->object.sha1));
+		return error("Cannot get commit message for %s",
+			     sha1_to_hex(commit->object.sha1));
 
 	/*
 	 * "commit" is an existing commit.  We would want to apply
-- 
1.7.3.2.504.g59d466