From 2b0ba2a6947c1879d6c03b784d57919750fcc170 Mon Sep 17 00:00:00 2001
From: Robin Krens <robin@robinkrens.nl>
Date: Sun, 12 Jun 2022 17:51:37 +0200
Subject: [PATCH] tools: bmp2tiles with cmd line args

---
 tools/bmp2tiles/bmp2tiles.c | 53 +++++++++++++++++++++++++++++++++++++++------
 1 file changed, 46 insertions(+), 7 deletions(-)

diff --git a/tools/bmp2tiles/bmp2tiles.c b/tools/bmp2tiles/bmp2tiles.c
index 472442a..40db317 100644
--- a/tools/bmp2tiles/bmp2tiles.c
+++ b/tools/bmp2tiles/bmp2tiles.c
@@ -11,6 +11,8 @@
 #include <stdint.h>
 #include <stdbool.h>
 #include <string.h>
+#include <unistd.h>
+#include <getopt.h>
 #include <SDL2/SDL_image.h>
 
 #define TILE_SZ		32
@@ -56,16 +58,47 @@ void generate_4bpp_tile(unsigned char *buf, void * userdata,
 	}
 }
 
-int main(void)
+int main(int argc, char *argv[])
 {
 	SDL_Surface * rawbmp;
 	FILE * ostream;
-	char filename[] = "test.bmp";
-	char outname[] = "test.gfx";
-	rawbmp = SDL_LoadBMP(filename);
-	
+	int opt;
+	char * infile;
+	char outfile[256];
+	bool bout = false;
+
+	while ((opt = getopt(argc, argv, "po:sv:")) != -1) {
+        	switch (opt) {
+			case 'p':
+				printf("include palette");
+				break;
+			case 'o':
+				printf("output file %s\n", optarg);
+				strcpy(outfile, optarg);
+				bout = true;
+				break;
+			case 's':
+				printf("generate gfx per 16x16 tile \n");
+				break;
+			case 'v':
+				break;
+			default: /* '?' */
+                   		fprintf(stderr, "Usage: %s [-s] [-o output] file \n", argv[0]);
+				exit(EXIT_FAILURE);
+               }
+        }
+
+	if (optind >= argc) {
+		fprintf(stderr, "Expected infile\n");
+		fprintf(stderr, "Usage: %s [-s] [-o output] [file]\n", argv[0]);
+		exit(EXIT_FAILURE);
+	}
+
+	infile = argv[optind];
+
+	rawbmp = SDL_LoadBMP(infile);
 	if (!rawbmp) {
-		fprintf(stderr, "can not load .bmp file\n");
+		fprintf(stderr, "can not load %s file\n", infile);
 		exit(EXIT_FAILURE);
 	}
 
@@ -80,7 +113,13 @@ int main(void)
 		exit(EXIT_FAILURE);
 	}
 
-	ostream = fopen(outname, "w");
+	if (!bout) 
+		ostream = fopen("out.gfx", "w");
+	else { 
+		printf("opening %s\n", outfile);
+		ostream = fopen(outfile, "w");
+	}
+	
 	if (!ostream) {
 		fprintf(stderr, "can not open file for writing!\n");
 		exit(EXIT_FAILURE);
-- 
2.7.4