slackbuilds/games/colem/rom_path.diff

diff -Naur a/ColEm/Coleco.c b/ColEm/Coleco.c
--- a/ColEm/Coleco.c	2008-03-30 12:53:24.000000000 -0400
+++ b/ColEm/Coleco.c	2009-09-29 17:49:32.000000000 -0400
@@ -19,6 +19,9 @@
 #include <stdlib.h>
 #include <ctype.h>
 #include <unistd.h>
+#include <sys/types.h>
+#include <limits.h>
+#include <pwd.h>
 
 #ifdef __WATCOMC__
 #include <direct.h>
@@ -69,6 +72,46 @@
 #define fwrite(B,N,L,F) gzwrite(F,B,(L)*(N))
 #endif
 
+/* 20090929 bkw: smart_fopen() searches for ROMs in various places
+	you might expect them to live, on a UNIXey system. Also searches
+	for both upper- and lower-case filenames.  */
+static FILE *smart_fopen(const char *path, const char *mode) {
+	FILE *fp;
+	char lowercase_path[PATH_MAX + 1], filename[PATH_MAX + 1];
+	const char *p = path;
+	char *lp = lowercase_path;
+	struct passwd *ent;
+
+	while(*p) *lp++ = tolower(*p++);
+	*lp = '\0';
+
+	if( (fp = fopen(path, mode)) )
+		return fp;
+
+	if( (fp = fopen(lowercase_path, mode)) )
+		return fp;
+
+	sprintf(filename, "/usr/share/colem/%s", path);
+	if( (fp = fopen(filename, mode)) )
+		return fp;
+
+	sprintf(filename, "/usr/share/colem/%s", lowercase_path);
+	if( (fp = fopen(filename, mode)) )
+		return fp;
+
+	if( (ent = getpwuid(getuid())) && (ent->pw_dir) ) {
+		sprintf(filename, "%s/.colem/%s", ent->pw_dir, path);
+		if( (fp = fopen(filename, mode)) )
+			return fp;
+
+		sprintf(filename, "%s/.colem/%s", ent->pw_dir, lowercase_path);
+		if( (fp = fopen(filename, mode)) )
+			return fp;
+	}
+
+	return NULL;
+}
+
 /** StartColeco() ********************************************/
 /** Allocate memory, load ROM image, initialize hardware,   **/
 /** CPU and start the emulation. This function returns 0 in **/
@@ -134,7 +177,7 @@
 
   /* COLECO.ROM: OS7 (ColecoVision BIOS) */
   if(Verbose) printf("  Opening COLECO.ROM...");
-  if(!(F=fopen("COLECO.ROM","rb"))) P="NOT FOUND";
+  if(!(F=smart_fopen("COLECO.ROM","rb"))) P="NOT FOUND";
   else
   {
     if(fread(ROM_BIOS,1,0x2000,F)!=0x2000) P="SHORT FILE";
@@ -145,7 +188,7 @@
   if(!P)
   {
     if(Verbose) printf("OK\n  Opening WRITER.ROM...");
-    if(F=fopen("WRITER.ROM","rb"))
+    if(F=smart_fopen("WRITER.ROM","rb"))
     {
       if(fread(ROM_WRITER,1,0x8000,F)==0x8000) ++AdamROMs;
       fclose(F);
@@ -157,7 +200,7 @@
   if(!P&&AdamROMs)
   {
     if(Verbose) printf("  Opening EOS.ROM...");
-    if(F=fopen("EOS.ROM","rb"))
+    if(F=smart_fopen("EOS.ROM","rb"))
     {
       if(fread(ROM_EOS,1,0x2000,F)==0x2000) ++AdamROMs;
       fclose(F);