Moved here from ../libstore

1 files changed, 69 insertions, 0 deletions

diff --git a/utils/storecat.c b/utils/storecat.c
new file mode 100644
index 00000000..be65b63a
--- /dev/null
+++ b/utils/storecat.c
@@ -0,0 +1,69 @@
+/* Write a store to stdout
+
+   Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+   Written by Miles Bader <miles@gnu.ai.mit.edu>
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   The GNU Hurd is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, write to the Free Software Foundation, Inc.,
+   59 Temple Place - Suite 330, Boston, MA 02111, USA. */
+
+#include <unistd.h>
+#include <argp.h>
+#include <error.h>
+
+#include <hurd/store.h>
+
+int
+main (int argc, char **argv)
+{
+  error_t err;
+  struct store *s;
+  char *name;
+  off_t addr;
+  size_t left;
+  const struct argp_child kids[] = { { &store_argp }, { 0 }};
+  struct argp argp =
+    { 0, 0, 0, "Write the contents of a store to stdout", kids };
+  struct store_argp_params p = { 0 };
+
+  argp_parse (&argp, argc, argv, 0, 0, &p);
+  err = store_parsed_name (p.result, &name);
+  if (err)
+    error (2, err, "store_parsed_name");
+
+  err = store_parsed_open (p.result, STORE_READONLY, &s);
+  if (err)
+    error (4, err, "%s", name);
+
+  addr = 0;
+  left = s->size;
+  while (left > 0)
+    {
+      size_t read = left > 1024*1024 ? 1024*1024 : left;
+      char buf[4096];
+      void *data = buf;
+      size_t data_len = sizeof (buf);
+     
+      err = store_read (s, addr, read, &data, &data_len);
+      if (err)
+	error (5, err, "%s", name);
+      if (write (1, data, data_len) < 0)
+	error (6, errno, "stdout");
+
+      addr += data_len >> s->log2_block_size;
+      left -= data_len;
+    }
+
+  exit (0);
+}