From 74f632203d187148b3d063b7023051138e872d4c Mon Sep 17 00:00:00 2001
From: "B. Watson" <urchlay@slackware.uk>
Date: Wed, 29 May 2024 15:00:43 -0400
Subject: unprotbas: add -s option.

---
 unprotbas.c | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

(limited to 'unprotbas.c')

diff --git a/unprotbas.c b/unprotbas.c
index b2b3d98..8c8651f 100644
--- a/unprotbas.c
+++ b/unprotbas.c
@@ -58,6 +58,9 @@ unsigned char badcode[] = {
 /* for -p/-pv */
 int varname_char = 0x9b;
 
+/* for -s */
+int shrinktable = 0;
+
 /* for the -r option */
 #define MAP_FILE "varnames.txt"
 unsigned char varnames[BUFSIZE];
@@ -634,6 +637,11 @@ void scramble_vars(void) {
 		exit(2);
 	}
 
+	if(shrinktable) {
+		if(verbose) fprintf(stderr, "shrinking variable name table\n");
+		adjust_vntable_size((vvstart - 1) - vnstart, (codestart - vvstart) / 8);
+	}
+
 	if(varname_char == -1) srand(time(NULL));
 
 	for(i = vnstart; i < vvstart - 1; i++)
@@ -652,7 +660,8 @@ void scramble_vars(void) {
 }
 
 void print_help(void) {
-	fprintf(stderr, "Usage: %s [-v] [[-f] [-n] [-g] [-c] [-r|-w] | [-p|-pc|-pv]] <inputfile> <outputfile>\n", self);
+	fprintf(stderr, "Usage: %s [-v] [-f] [-n] [-g] [-c] [-r|-w]  <inputfile> <outputfile>\n", self);
+	fprintf(stderr, "       %s [-v] [-p|-pc|-pv] [-xr|-xNN] [-s] <inputfile> <outputfile>\n", self);
 	fprintf(stderr, "-v: verbose\n");
 	fprintf(stderr, "-f: force variable name table rebuild\n");
 	fprintf(stderr, "-n: do not rebuild variable name table, even if it's invalid\n");
@@ -661,8 +670,8 @@ void print_help(void) {
 	fprintf(stderr, "-w: write variable names to varnames.txt\n");
 	fprintf(stderr, "-r: read variable names from varnames.txt\n");
 	fprintf(stderr, "-pc/-pv/-p: protect code/variables/both\n");
-	fprintf(stderr, "-xXX: hex code XX for variable names, with -p/-pc\n");
-	fprintf(stderr, "-xr: random variable names, with -p/-pc\n");
+	fprintf(stderr, "-xNN: hex code NN for variable names, with -p/-pv\n");
+	fprintf(stderr, "-xr: random variable names, with -p/-pv\n");
 	fprintf(stderr, "Use - as a filename to read from stdin and/or write to stdout\n");
 }
 
@@ -773,11 +782,12 @@ void parse_args(int argc, char **argv) {
 											char *e;
 											varname_char = (int)strtol(&(*argv)[2], &e, 16);
 											if(*e != 0 || varname_char > 0xff)
-												die("invalid hex character for -x option (range is 0 to ff)");
+												die("invalid hex value for -x option (range is 0 to ff)");
 										}
 								 }
 							 }
 							 break;
+				case 's': shrinktable = 1; break;
 				case 0:
 							 if(!input_file)
 								 open_input(NULL);
@@ -809,6 +819,8 @@ void parse_args(int argc, char **argv) {
 	}
 	if(xopt_used && !protect_vars)
 		die("-x option requires -p or -pv");
+	if(shrinktable && !protect_vars)
+		die("-s option requires -p or -pv");
 }
 
 int main(int argc, char **argv) {
-- 
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