1 files changed, 87 insertions, 0 deletions
diff --git a/gr-utils/src/python/gr_read_file_metadata b/gr-utils/src/python/gr_read_file_metadata
new file mode 100644
index 000000000..cf0cd5b11
--- /dev/null
+++ b/gr-utils/src/python/gr_read_file_metadata
@@ -0,0 +1,87 @@
+#!/usr/bin/env python
+#
+# Copyright 2012 Free Software Foundation, Inc.
+#
+# This file is part of GNU Radio
+#
+# GNU Radio 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 3, or (at your option)
+# any later version.
+#
+# GNU Radio 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 GNU Radio; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+#
+
+import sys
+from optparse import OptionParser
+
+from gruel import pmt
+from gnuradio.blocks import parse_file_metadata
+
+def main(filename, detached=False):
+    handle = open(filename, "rb")
+
+    nheaders = 0
+    nread = 0
+    while(True):
+        # read out next header bytes
+        hdr_start = handle.tell()
+        header_str = handle.read(parse_file_metadata.HEADER_LENGTH)
+        if(len(header_str) == 0):
+            break
+
+        # Convert from string to PMT (should be a dictionary)
+        try:
+            header = pmt.pmt_deserialize_str(header_str)
+        except RuntimeError:
+            sys.stderr.write("Could not deserialize header: invalid or corrupt data file.\n")
+            sys.exit(1)
+
+        print "HEADER {0}".format(nheaders)
+        info = parse_file_metadata.parse_header(header, True)
+
+        if(info["extra_len"] > 0):
+            extra_str = handle.read(info["extra_len"])
+            if(len(extra_str) == 0):
+                break
+
+            try:
+                extra = pmt.pmt_deserialize_str(extra_str)
+            except RuntimeError:
+                sys.stderr.write("Could not deserialize extras: invalid or corrupt data file.\n")
+                sys.exit(1)
+
+            print "\nExtra Header:"
+            extra_info = parse_file_metadata.parse_extra_dict(extra, info, True)
+        
+        nheaders += 1
+        nread += parse_file_metadata.HEADER_LENGTH + info["extra_len"]
+        if(not detached):
+            nread += info['nbytes']
+        handle.seek(nread, 0)
+        print "\n\n"
+
+if __name__ == "__main__":
+    usage="%prog: [options] filename"
+    description = "Read in a GNU Radio file with meta data, extracts the header and prints it."
+
+    parser = OptionParser(conflict_handler="resolve",
+                          usage=usage, description=description)
+    parser.add_option("-D", "--detached", action="store_true", default=False,
+                      help="Used if header is detached.")
+    (options, args) = parser.parse_args ()
+
+    if(len(args) < 1):
+        sys.stderr.write("No filename given\n")
+        sys.exit(1)
+
+    filename = args[0]
+    main(filename, options.detached)