From 1e3b99ea2fceafe99b52f7e24e130f0ab22a7b51 Mon Sep 17 00:00:00 2001
From: Ethan Sommer <e5ten.arch@gmail.com>
Date: Mon, 25 Nov 2019 03:17:57 -0500
Subject: [PATCH] gzip: add -t

---
 toys/lsb/gzip.c | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/toys/lsb/gzip.c b/toys/lsb/gzip.c
index 6f6bfe5b..b80e24fe 100644
--- a/toys/lsb/gzip.c
+++ b/toys/lsb/gzip.c
@@ -5,18 +5,18 @@
  * See http://refspecs.linuxfoundation.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic/gzip.html
  * GZIP RFC: http://www.ietf.org/rfc/rfc1952.txt
  *
- * TODO: qtv --rsyncable
+ * TODO: qv --rsyncable
 
 // gzip.net version allows all options for all commands.
-USE_GZIP(NEWTOY(gzip,    "n(no-name)cdfk123456789[-123456789]", TOYFLAG_USR|TOYFLAG_BIN))
-USE_GUNZIP(NEWTOY(gunzip, "cdfk123456789[-123456789]", TOYFLAG_USR|TOYFLAG_BIN))
-USE_ZCAT(NEWTOY(zcat,     "cdfk123456789[-123456789]", TOYFLAG_USR|TOYFLAG_BIN))
+USE_GZIP(NEWTOY(gzip,    "n(no-name)cdfkt123456789[-123456789]", TOYFLAG_USR|TOYFLAG_BIN))
+USE_GUNZIP(NEWTOY(gunzip, "cdfkt123456789[-123456789]", TOYFLAG_USR|TOYFLAG_BIN))
+USE_ZCAT(NEWTOY(zcat,     "cdfkt123456789[-123456789]", TOYFLAG_USR|TOYFLAG_BIN))
 
 config GZIP
   bool "gzip"
   default n
   help
-    usage: gzip [-19cdfk] [FILE...]
+    usage: gzip [-19cdfkt] [FILE...]
 
     Compress files. With no files, compresses stdin to stdout.
     On success, the input files are removed and replaced by new
@@ -26,13 +26,14 @@ config GZIP
     -d	Decompress (act as gunzip)
     -f	Force: allow overwrite of output file
     -k	Keep input files (default is to remove)
+    -t	Test integrity
     -#	Compression level 1-9 (1:fastest, 6:default, 9:best)
 
 config GUNZIP
   bool "gunzip"
   default y
   help
-    usage: gunzip [-cfk] [FILE...]
+    usage: gunzip [-cfkt] [FILE...]
 
     Decompress files. With no files, decompresses stdin to stdout.
     On success, the input files are removed and replaced by new
@@ -41,6 +42,7 @@ config GUNZIP
     -c	Output to stdout (act as zcat)
     -f	Force: allow read from tty
     -k	Keep input files (default is to remove)
+    -t	Test integrity
 
 config ZCAT
   bool "zcat"
@@ -116,7 +118,7 @@ static void do_gzip(int ifd, char *in)
 {
   struct stat sb;
   char *out = 0;
-  int ofd = 0;
+  int ofd = FLAG(t) ? xopen("/dev/null", O_WRONLY) :  0;
 
   // Are we writing to stdout?
   if (!ifd || FLAG(c)) ofd = 1;
@@ -158,6 +160,8 @@ void gzip_main(void)
     if ((toys.optflags>>TT.level)&1) break;
   if (!(TT.level = 9-TT.level)) TT.level = 6;
 
+  if (FLAG(t)) toys.optflags |= FLAG_d;
+
   loopfiles(toys.optargs, do_gzip);
 }
 
-- 
2.39.2