1 files changed, 67 insertions, 0 deletions
diff --git a/src/tools/dehuff.c b/src/tools/dehuff.c
new file mode 100644
index 0000000..d5805b8
--- /dev/null
+++ b/src/tools/dehuff.c
@@ -0,0 +1,67 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "huffman.hpp"
+
+#include "util.h"
+
+int main(int argc, char *argv[])
+{
+	FILE *fp;
+	char str[8];
+	unsigned char *buf, *dbuf;
+	int len;
+	
+	if (argc != 3) {
+		fprintf(stderr, "usage: %s <compressed.rif> <outfile>\n", argv[0]);
+		exit(EXIT_FAILURE);
+	}
+	
+	fp = fopen(argv[1], "rb");
+	if (fp == NULL) {
+		perror("fopen");
+		exit(EXIT_FAILURE);
+	}
+	
+	fread(str, 1, 8, fp);
+	if (strncmp(str, COMPRESSED_RIF_IDENTIFIER, 8) != 0) {
+		fprintf(stderr, "%s: invalid compressed rif file\n", argv[1]);
+		exit(EXIT_FAILURE);
+	}
+	
+	len = fsize(argv[1]);
+	buf = (unsigned char *)malloc(len);
+	if (buf == NULL) {
+		fprintf(stderr, "could not allocate %d bytes to load %s\n", len, argv[1]);
+		exit(EXIT_FAILURE);
+	}
+	
+	fseek(fp, 0, SEEK_SET);
+	
+	fread(buf, 1, len, fp);
+	fclose(fp);
+	
+	len = ((HuffmanPackage *)buf)->UncompressedDataSize;
+	
+	dbuf = (unsigned char *)HuffmanDecompress((HuffmanPackage *)buf);
+	if (dbuf == NULL) {
+		fprintf(stderr, "Something went wrong with HuffmanDecompress\n");
+		exit(EXIT_FAILURE);
+	}
+	
+	free(buf);
+	
+	fp = fopen(argv[2], "wb");
+	if (fp == NULL) {
+		perror("fopen");
+		exit(EXIT_FAILURE);
+	}
+	
+	fwrite(dbuf, 1, len, fp);
+	fclose(fp);
+	
+	free(dbuf);
+	
+	return 0;
+}