From 86e0a1998c2426fde3125ae853a981120d251b1c Mon Sep 17 00:00:00 2001
From: Dave Vasilevsky <djvasi@gmail.com>
Date: Tue, 12 Oct 2010 02:16:28 -0400
Subject: [PATCH] Let write be a filter

---
 write.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/write.c b/write.c
index f51e2be..9259481 100644
--- a/write.c
+++ b/write.c
@@ -102,12 +102,17 @@ int main(int argc, char **argv) {
     argv += optind - 1;
     
 
-    if (argc != 3)
+    if (argc == 1) {
+        gInFile = stdin;
+        gOutFile = stdout;
+    } else if (argc == 3) {
+        if (!(gInFile = fopen(argv[1], "r")))
+            die("Can't open input file");
+        if (!(gOutFile = fopen(argv[2], "w")))
+            die("Can't open output file");
+    } else {
         die("Need two arguments");
-    if (!(gInFile = fopen(argv[1], "r")))
-        die("Can't open input file");
-    if (!(gOutFile = fopen(argv[2], "w")))
-        die("Can't open output file");
+    }
     
     // xz options
     lzma_options_lzma lzma_opts;