From 6a51e39a5c57ef94b108f6c562c2503b9e88668c Mon Sep 17 00:00:00 2001
From: ISSOtm <eldredhabert0@gmail.com>
Date: Sun, 10 Jul 2022 11:55:56 +0200
Subject: [PATCH] Print error if reverse() fails to open a file

---
 src/gfx/reverse.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/gfx/reverse.cpp b/src/gfx/reverse.cpp
index 5549d4bc..40e4b5ae 100644
--- a/src/gfx/reverse.cpp
+++ b/src/gfx/reverse.cpp
@@ -28,7 +28,9 @@
 
 static DefaultInitVec<uint8_t> readInto(std::string path) {
 	std::filebuf file;
-	file.open(path, std::ios::in | std::ios::binary);
+	if (!file.open(path, std::ios::in | std::ios::binary)) {
+		fatal("Failed to open \"%s\": %s", path.c_str(), strerror(errno));
+	}
 	DefaultInitVec<uint8_t> data(128 * 16); // Begin with some room pre-allocated
 
 	size_t curSize = 0;
@@ -117,6 +119,7 @@ void reverse() {
 	if (!options.tilemap.empty()) {
 		tilemap = readInto(options.tilemap);
 		nbTileInstances = tilemap->size();
+		options.verbosePrint(Options::VERB_INTERM, "Read %zu tilemap entries.\n", nbTileInstances);
 	}
 
 	if (nbTileInstances > options.maxNbTiles[0] + options.maxNbTiles[1]) {