From 4cd85123996a0fe350b3a081a00c30f53e0bc7a1 Mon Sep 17 00:00:00 2001
From: neauoire <aliceffekt@gmail.com>
Date: Wed, 15 Nov 2023 14:21:05 -0800
Subject: [PATCH] Cleanup

---
 cli/lz/ulzdec.c | 43 ++++++++++++++++++-------------------------
 1 file changed, 18 insertions(+), 25 deletions(-)

diff --git a/cli/lz/ulzdec.c b/cli/lz/ulzdec.c
index 73b2f22..409f8e3 100644
--- a/cli/lz/ulzdec.c
+++ b/cli/lz/ulzdec.c
@@ -1,9 +1,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-char *ptr;
-char *mem;
-
 /* cc ulzdec.c -o ulzdec && ./ulzdec compressed.bin */
 
 static int
@@ -13,28 +10,25 @@ error(const char *name, const char *msg)
 	return 0;
 }
 
+char *mem, *ptr;
+
 void
-decode_byte(FILE *fp, char c)
+decode_ulz(FILE *fp)
 {
-	short i, length, offset;
-	/* DICT */
-	if(c & 0x80) {
-		if(c & 0x40)
-			length = (c & 0x3f) << 8 | getc(fp);
-		else
-			length = c & 0x3f;
-		length += 4, offset = getc(fp) + 1;
-		printf("DICT  %04x, %02x\n", length, offset);
-	}
-	/* LIT */ else {
-		length = c + 1;
-		printf("LIT%02x ", length);
-		for(i = 0; i < length; ++i) {
-			unsigned char c2 = getc(fp);
-			printf("%c", c2 == '\n' ? ' ' : c2);
-			*(ptr++) = c2;
-		}
-		printf("\n");
+	char *dict;
+	short i, length;
+	while((c = getc(src)) != EOF) {
+		if(c & 0x80) { /* DICT */
+			if(c & 0x40)
+				length = (c & 0x3f) << 8 | getc(src);
+			else
+				length = c & 0x3f;
+			dict = ptr - (getc(src) + 1);
+			for(i = 0; i < length + 4; i++)
+				*(ptr++) = *(dict++);
+		} else /* LIT */
+			for(i = 0; i < c + 1; i++)
+				*(ptr++) = getc(src);
 	}
 }
 
@@ -51,8 +45,7 @@ main(int argc, char *argv[])
 		return !error("Invalid input", argv[1]);
 	mem = malloc(0x10000);
 	ptr = mem;
-	while((c = getc(src)) != EOF)
-		decode_byte(src, c);
+	decode_ulz(src);
 	*(ptr) = 0;
 	printf("%s\n", mem);
 	return 0;