CI: Check for trailing spaces and (missing) newlines at the end of the file

fixes #737

assets/cubyz/biomes/cave/lava_cave.zig.zon

@@ -39,7 +39,6 @@
 			.size_variation = 6,
 		},
 		.{
-			
 			.id = "cubyz:ground_patch",
 			.block = "cubyz:lava",
 			.chance = 0.064,

assets/cubyz/shaders/chunks/occlusionTestVertex.vs

@@ -75,4 +75,3 @@ void main() {
 	vec3 vertexPosition = modelPosition + (vertexBuffer[vertexID]*chunks[chunkID].maxPos.xyz + (1 - vertexBuffer[vertexID])*chunks[chunkID].minPos.xyz)*chunks[chunkID].voxelSize;
 	gl_Position = projectionMatrix*viewMatrix*vec4(vertexPosition, 1);
 }
-

assets/cubyz/shaders/graphics/Circle.vs

@@ -15,7 +15,6 @@ uniform int circleColor;
 
 
 void main() {
-
 	// Convert to opengl coordinates:
 	vec2 position_percentage = (center + vertex_pos*radius)/screen;
 

assets/cubyz/shaders/graphics/Image.vs

@@ -15,7 +15,6 @@ uniform vec2 uvDim;
 uniform int color;
 
 void main() {
-
 	// Convert to opengl coordinates:
 	vec2 position_percentage = (start + vec2(vertex_pos.x*size.x, size.y - vertex_pos.y*size.y))/screen;
 

assets/cubyz/shaders/graphics/Line.vs

@@ -14,7 +14,6 @@ uniform int lineColor;
 
 
 void main() {
-
 	// Convert to opengl coordinates:
 	vec2 position_percentage = (start + vertex_pos*direction)/screen;
 

assets/cubyz/shaders/graphics/Rect.vs

@@ -14,7 +14,6 @@ uniform int rectColor;
 
 
 void main() {
-
 	// Convert to opengl coordinates:
 	vec2 position_percentage = (start + vertex_pos*size)/screen;
 

assets/cubyz/shaders/graphics/RectBorder.vs

@@ -15,7 +15,6 @@ uniform int rectColor;
 
 
 void main() {
-
 	// Convert to opengl coordinates:
 	vec2 position_percentage = (start + vertex_pos.xy*size + vertex_pos.zw*lineWidth)/screen;
 

assets/cubyz/shaders/graphics/Text.fs

@@ -19,7 +19,6 @@ vec2 convert2Proportional(vec2 original, vec2 full){
 	return vec2(original.x/full.x, original.y/full.y);
 }
 
-
 void main() {
 	vec4 texture_rect_percentage = vec4(convert2Proportional(texture_rect.xy, fontSize), convert2Proportional(texture_rect.zw, fontSize));
 	vec2 texture_position = vec2(

assets/cubyz/shaders/graphics/Text.vs

@@ -20,7 +20,6 @@ vec2 convert2Proportional(vec2 original, vec2 full) {
 	return vec2(original.x/full.x, original.y/full.y);
 }
 
-
 void main() {
 	vec2 vertex_pos = face_pos*vec2(1, -1);
 	vec2 position_percentage 	= convert2Proportional(floor(offset), scene);

assets/cubyz/shaders/ui/button.vs

@@ -13,7 +13,6 @@ uniform vec2 screen;
 uniform int color;
 
 void main() {
-
 	// Convert to opengl coordinates:
 	vec2 position_percentage = (start + vertex_pos*size)/screen;
 	startCoord.x = start.x;

assets/cubyz/shaders/ui/window_border.vs

@@ -14,7 +14,6 @@ uniform vec2 screen;
 uniform int color;
 
 void main() {
-
 	// Convert to opengl coordinates:
 	vec2 position_percentage = (start + vertex_pos*size)/screen;
 	startCoord.x = start.x;

src/audio.zig

@@ -331,5 +331,3 @@ fn patestCallback(
 	addMusic(buffer);
 	return 0;
 }
-
-

src/formatter/format.zig

@@ -8,7 +8,7 @@ var failed: bool = false;
 fn printError(msg: []const u8, filePath: []const u8, data: []const u8, charIndex: usize) void {
 	var lineStart: usize = 0;
 	var lineNumber: usize = 1;
-	var lineEnd: usize = 0;
+	var lineEnd: usize = data.len;
 	for(data[0..charIndex], 0..) |c, i| {
 		if(c == '\n') {
 			lineStart = i + 1;
@@ -47,6 +47,9 @@ fn checkFile(dir: std.fs.Dir, filePath: []const u8) !void {
 		switch(c) {
 			'\n' => {
 				lineStart = true;
+				if(i != 0 and (data[i - 1] == ' ' or data[i - 1] == '\t')) {
+					printError("Line contains trailing whitespaces. Please remove them.", filePath, data, i - 1);
+				}
 			},
 			'\r' => {
 				printError("Incorrect line ending \\r. Please configure your editor to use LF instead CRLF.", filePath, data, i);
@@ -62,6 +65,9 @@ fn checkFile(dir: std.fs.Dir, filePath: []const u8) !void {
 			}
 		}
 	}
+	if(data.len != 0 and data[data.len - 1] != '\n' or (data.len > 2 and data[data.len - 2] == '\n')) {
+		printError("File should end with a single empty line", filePath, data, data.len - 1);
+	}
 }
 
 fn checkDirectory(dir: std.fs.Dir) !void {

src/items.zig

@@ -1054,9 +1054,7 @@ pub const Item = union(enum) { // MARK: Item
 
 	pub fn deinit(self: Item) void {
 		switch(self) {
-			.baseItem => {
+			.baseItem => {},
-				
-			},
 			.tool => |_tool| {
 				_tool.deinit();
 			},