From 2363a0d6a8cf44f7288e0795ff29e081ecf3a08f Mon Sep 17 00:00:00 2001
From: Michael Gernoth <michael@gernoth.net>
Date: Mon, 2 Feb 2009 22:53:39 +0100
Subject: [PATCH] cleanup extract_lz_file

---
 rsb-lz.c | 48 ++++++++++++++++++++----------------------------
 1 file changed, 20 insertions(+), 28 deletions(-)

diff --git a/rsb-lz.c b/rsb-lz.c
index 0e86bca..c90f5df 100644
--- a/rsb-lz.c
+++ b/rsb-lz.c
@@ -428,7 +428,7 @@
  * 59b80:	46335053 	undefined
  */
 
-void fn_59788(const char *fname)
+void err_exit(const char *fname)
 {
 	fprintf(stderr,"%s: error extracting...\n", fname);
 	exit(1);
@@ -458,7 +458,7 @@ unsigned char fn_597c8(struct data_in_s *r6_data)
 	r1 = r6_data->stop;
 
 	if (r1 < r0)
-		fn_59788(__func__);
+		err_exit(__func__);
 
 	r5 = *r0;
 	r0++;
@@ -544,7 +544,7 @@ void fn_5980c(unsigned int arg1, struct data_out_s *data_out)
 
 	if (r1 > r2) {
 		printf("r1: 0x%08x, r2: 0x%08x\n", (unsigned int)r1, (unsigned int)r2);
-		fn_59788(__func__);
+		err_exit(__func__);
 	}
 
 	*r1 = arg1 & 0xff;
@@ -639,41 +639,33 @@ unsigned int crc_check_59684(unsigned char *arg1, unsigned int arg2, unsigned in
 	return 4;
 }
 
-void extract_lz_file(unsigned char *buf, unsigned char *name)
+void extract_lz_file(unsigned char *inbuf, unsigned char *name)
 {
-	unsigned char *r3;
-	unsigned int r5;
-	unsigned char *r7 = NULL; /* Arg1, mem start */
-	unsigned char *r10 = NULL; /* Arg2, mem end */
-	unsigned char *r11 = buf; /* Arg3 */
+	unsigned int len;
+	unsigned char *outbuf;
 	struct data_in_s data_in;
 	struct data_out_s data_out;
 
-	if (*((unsigned int*)r11) != LZ_MAGIC)
-		fn_59788(__func__);
+	if (*((unsigned int*)inbuf) != LZ_MAGIC)
+		err_exit(__func__);
 
-	r3 = r11 + 4;
-	r5 = *((unsigned int*)r3);
-	printf(", length: %d", r5);
+	len = *((unsigned int*)(inbuf + 4));
+	printf(", length: %d", len);
 
-	if ((r7 = malloc(r5)) == NULL) {
+	if ((outbuf = malloc(len)) == NULL) {
 		perror("malloc");
 		exit(1);
 	}
-	r10 = r7 + r5;
-	bzero(r7, r5);
 
-	r3 = r7 + r5;
-	if (r3 > r10)
-		fn_59788(__func__);
-	
-	data_in.start = r11 + 8;
-	data_in.stop = r5 + r11;
+	bzero(outbuf, len);
+
+	data_in.start = inbuf + 8;
+	data_in.stop = inbuf + len;
 	data_in.x = 0;
 	data_in.bit = 0x80;
 
-	data_out.pos = r7;
-	data_out.end = r7 + r5;
+	data_out.pos = outbuf;
+	data_out.end = outbuf + len;
 
 	lz_expand(&data_in, &data_out);
 
@@ -684,11 +676,11 @@ void extract_lz_file(unsigned char *buf, unsigned char *name)
 
 	if ((ret = crc_check_59684(r7, r5, 0x46335053)) != 0) {
 		printf("crc_check return: %d\n", ret);
-		fn_59788(__func__);
+		err_exit(__func__);
 	}
 #endif
 
-	write_file((char*)name, r7, r5);
+	write_file((char*)name, outbuf, len);
 	
-	free(r7);
+	free(outbuf);
 }
-- 
2.39.2