--- a/splitPD0
+++ b/splitPD0
@@ -2,9 +2,9 @@
#======================================================================
# S P L I T P D 0
# doc: Sat Aug 21 22:20:27 2010
-# dlm: Sat Jul 30 18:50:43 2016
+# dlm: Mon Apr 2 15:49:09 2018
# (c) 2010 A.M. Thurnherr
-# uE-Info: 69 60 NIL 0 0 72 2 2 4 NIL ofnI
+# uE-Info: 28 36 NIL 0 0 72 2 2 4 NIL ofnI
#======================================================================
# split RDI files based on list of ensemble numbers (e.g. from yoyo -t)
@@ -19,11 +19,13 @@
# Jul 30, 2016: - modified -o default
# - added code to set DSID of first ensemble of each
# output file to 0x7f7f
+# Apr 2, 1018: - BUG in error messages
+# - added header id check
# NOTES:
# - it is assumed that the input file begins with ensemble #1
-# - turning-point ensembles are written to preceding profile,
-# for compatibility with [yoyo]
+# - turning-point ensembles are written to next profile,
+# for compatibility with [yoyo]?
# FILE NAME CONVENTION:
# - in order to assign individual yoyo casts numerical station numbers,
@@ -38,7 +40,7 @@
die("Usage: $0 " .
"[-o)ut-file <fmt[e.g. 017DL_%02d.000]>] " .
- "[-f)irst <cast #>] " .
+ "[-f)irst output <cast #>] " .
"[require -m)in <ens> to produce output] " .
"<RDI file> <ens> <ens[...]>\n")
unless (&getopts('f:o:m:') && @ARGV>=3);
@@ -50,7 +52,8 @@
$opt_m = 0 unless defined($opt_m); # default: produce tiny files as well
-readHeader($ARGV[0],\%hdr); shift; # get length of ensembles
+$fn = $ARGV[0]; shift;
+readHeader($fn,\%hdr); # get length of ensembles
$ens_len = $hdr{ENSEMBLE_BYTES} + 2;
$first_ens = $ARGV[0]+1; shift; # initialize loop
@@ -59,19 +62,21 @@
do { # split data
sysseek(WBRF,($first_ens-2)*$ens_len,0) || # begin next block of ensembles
- die("$WBRcfn: $!");
- $last_ens++ unless defined($ARGV[0]);
+ die("$fn: $!");
+ $last_ens++ unless defined($fn);
- sysread(WBRF,$ids,2) || die("$WBRcfn: file truncated"); # read 1st ensemble & ensure DSID is 0x7f
+ sysread(WBRF,$ids,2) || die("$fn: file truncated"); # read 1st ensemble & ensure DSID is 0x7f
+ die("$fn: illegal header id [0x" . unpack('H4',$ids) . "]") # require 1st byte to be 0x7f
+ unless (substr(unpack('H4',$ids),0,2) eq '7f');
$ids = pack('H4','7f7f'); # reset DSID
sysread(WBRF,$febuf,$ens_len-4) == $ens_len-4 ||
- die("$WBRcfn: file truncated");
- sysread(WBRF,$csum,2) || die("$WBRcfn: file truncated");
+ die("$fn: file truncated");
+ sysread(WBRF,$csum,2) || die("$fn: file truncated");
$csum = pack('v',unpack('%16C*',$ids.$febuf)); # re-calculate checksum
$nBytes = ($last_ens-$first_ens) * $ens_len; # read remaining ensembles in block
sysread(WBRF,$buf,$nBytes) == $nBytes ||
- die("$WBRcfn: file truncated");
+ die("$fn: file truncated (ends before ens#$last_ens)");
if ($last_ens-$first_ens+1 >= $opt_m) { # write output only if sufficient # of ensembles
$fn = sprintf($opt_o,$opt_f+$cnr++);