convert \ to / while extracting and accecpt file names on the command line

to control extraction.

include/QF/pakfile.h

@@ -52,6 +52,7 @@ typedef struct pack_s {
 
 pack_t *pack_new (const char *name);
 void pack_del (pack_t *pack);
+void pack_rehash (pack_t *pack);
 pack_t *pack_open (const char *name);
 void pack_close (pack_t *pack);
 pack_t *pack_create (const char *name);

libs/util/pakfile.c

@@ -88,6 +88,16 @@ pack_del (pack_t *pack)
 	free (pack);
 }
 
+void
+pack_rehash (pack_t *pack)
+{
+	int         i;
+
+	for (i = 0; i < pack->numfiles; i++) {
+		Hash_Add (pack->file_hash, &pack->files[i]);
+	}
+}
+
 pack_t *
 pack_open (const char *name)
 {

tools/pak/pak.c

@@ -151,7 +151,8 @@ int
 main (int argc, char **argv)
 {
 	pack_t	*pack;
-	int		i;
+	int		i, j, rehash = 0;
+	dpackfile_t *pf;
 
 	this_program = argv[0];
 
@@ -172,9 +173,35 @@ main (int argc, char **argv)
 				return 1;
 			}
 			for (i = 0; i < pack->numfiles; i++) {
+				pf = &pack->files[i];
+				for (j = 0; j < PAK_PATH_LENGTH; j++) {
+					if (!pf->name[j])
+						break;
+					if (pf->name[j] == '\\') {
+						pf->name[j] = '/';
+						rehash = 1;
+					}
+				}
+				if (optind == argc) {
 					if (options.verbosity > 0)
-					printf ("%s\n", pack->files[i].name);
-				pack_extract (pack, &pack->files[i]);
+						printf ("%s\n", pf->name);
+					pack_extract (pack, pf);
+				}
+			}
+			if (optind < argc) {
+				if (rehash)
+					pack_rehash (pack);
+				while (optind < argc) {
+					pf = pack_find_file (pack, argv[optind]);
+					if (!pf) {
+						fprintf (stderr, "could not file %s\n", argv[optind]);
+						continue;
+					}
+					if (options.verbosity > 0)
+						printf ("%s\n", pf->name);
+					pack_extract (pack, pf);
+					optind++;
+				}
 			}
 			pack_close (pack);
 			break;