[1325] | 1 | //#--------------------------------------------------------------------------- |
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| 2 | //# PKSreader.cc: Class to read Parkes multibeam data. |
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| 3 | //#--------------------------------------------------------------------------- |
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| 4 | //# Copyright (C) 2000-2006 |
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| 5 | //# Associated Universities, Inc. Washington DC, USA. |
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| 6 | //# |
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| 7 | //# This library is free software; you can redistribute it and/or modify it |
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| 8 | //# under the terms of the GNU Library General Public License as published by |
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| 9 | //# the Free Software Foundation; either version 2 of the License, or (at your |
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| 10 | //# option) any later version. |
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| 11 | //# |
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| 12 | //# This library is distributed in the hope that it will be useful, but WITHOUT |
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| 13 | //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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| 14 | //# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public |
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| 15 | //# License for more details. |
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| 16 | //# |
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| 17 | //# You should have received a copy of the GNU Library General Public License |
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| 18 | //# along with this library; if not, write to the Free Software Foundation, |
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| 19 | //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA. |
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| 20 | //# |
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| 21 | //# Correspondence concerning AIPS++ should be addressed as follows: |
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| 22 | //# Internet email: aips2-request@nrao.edu. |
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| 23 | //# Postal address: AIPS++ Project Office |
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| 24 | //# National Radio Astronomy Observatory |
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| 25 | //# 520 Edgemont Road |
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| 26 | //# Charlottesville, VA 22903-2475 USA |
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| 27 | //# |
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| 28 | //# $Id: PKSreader.cc,v 19.4 2006/05/19 02:14:50 mcalabre Exp $ |
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| 29 | //#--------------------------------------------------------------------------- |
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| 30 | //# Original: 2000/08/23, Mark Calabretta, ATNF |
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| 31 | //#--------------------------------------------------------------------------- |
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| 32 | |
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| 33 | #include <atnf/PKSIO/PKSreader.h> |
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| 34 | #include <atnf/PKSIO/PKSFITSreader.h> |
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| 35 | |
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| 36 | #ifndef NOPKSMS |
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| 37 | #include <atnf/PKSIO/PKSMS2reader.h> |
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| 38 | #endif |
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| 39 | |
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| 40 | #include <casa/IO/RegularFileIO.h> |
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| 41 | #include <casa/OS/File.h> |
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| 42 | |
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| 43 | |
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| 44 | //--------------------------------------------------------------- getPKSreader |
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| 45 | |
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| 46 | // Return an appropriate PKSreader for a Parkes Multibeam dataset. |
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| 47 | |
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| 48 | PKSreader* getPKSreader( |
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| 49 | const String name, |
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| 50 | const Int retry, |
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| 51 | const Int interpolate, |
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| 52 | String &format, |
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| 53 | Vector<Bool> &beams, |
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| 54 | Vector<Bool> &IFs, |
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| 55 | Vector<uInt> &nChan, |
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| 56 | Vector<uInt> &nPol, |
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| 57 | Vector<Bool> &haveXPol, |
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| 58 | Bool &haveBase, |
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| 59 | Bool &haveSpectra) |
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| 60 | { |
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| 61 | // Check accessibility of the input. |
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| 62 | File inFile(name); |
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| 63 | if (!inFile.exists()) { |
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| 64 | format = "DATASET NOT FOUND"; |
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| 65 | return 0; |
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| 66 | } |
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| 67 | |
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| 68 | if (!inFile.isReadable()) { |
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| 69 | format = "DATASET UNREADABLE"; |
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| 70 | return 0; |
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| 71 | } |
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| 72 | |
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| 73 | // Determine the type of input. |
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| 74 | PKSreader *reader = 0; |
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| 75 | if (inFile.isRegular()) { |
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| 76 | // Is it MBFITS or SDFITS? |
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| 77 | RegularFileIO file(name); |
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| 78 | char buf[32]; |
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| 79 | file.read(30, buf, False); |
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| 80 | buf[30] = '\0'; |
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| 81 | if (String(buf) == "SIMPLE = T") { |
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| 82 | // Looks like SDFITS. |
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| 83 | format = "SDFITS"; |
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| 84 | reader = new PKSFITSreader("SDFITS"); |
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| 85 | |
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| 86 | } else { |
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| 87 | // Assume it's MBFITS. |
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| 88 | format = "MBFITS"; |
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| 89 | reader = new PKSFITSreader("MBFITS", retry, interpolate); |
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| 90 | } |
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| 91 | |
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| 92 | } else if (inFile.isDirectory()) { |
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| 93 | if (File(name + "/DATA_DESCRIPTION").exists()) { |
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| 94 | // MS version 2. |
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| 95 | #ifdef NOPKSMS |
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| 96 | format = "MS2 INPUT FORMAT IS NO LONGER SUPPORTED"; |
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| 97 | #else |
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| 98 | format = "MS2"; |
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| 99 | reader = new PKSMS2reader(); |
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| 100 | #endif |
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| 101 | } |
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| 102 | |
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| 103 | } else { |
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| 104 | format = "UNRECOGNIZED INPUT FORMAT"; |
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| 105 | } |
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| 106 | |
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| 107 | |
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| 108 | // Try to open it. |
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| 109 | if (reader) { |
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| 110 | if (reader->open(name, beams, IFs, nChan, nPol, haveXPol, haveBase, |
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| 111 | haveSpectra)) { |
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| 112 | format += " OPEN ERROR"; |
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| 113 | delete reader; |
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| 114 | } else { |
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| 115 | return reader; |
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| 116 | } |
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| 117 | } |
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| 118 | |
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| 119 | return 0; |
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| 120 | } |
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| 121 | |
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| 122 | |
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| 123 | //--------------------------------------------------------------- getPKSreader |
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| 124 | |
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| 125 | // Search a list of directories for a Parkes Multibeam dataset and return an |
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| 126 | // appropriate PKSreader for it. |
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| 127 | |
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| 128 | PKSreader* getPKSreader( |
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| 129 | const String name, |
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| 130 | const Vector<String> directories, |
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| 131 | const Int retry, |
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| 132 | const Int interpolate, |
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| 133 | Int &iDir, |
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| 134 | String &format, |
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| 135 | Vector<Bool> &beams, |
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| 136 | Vector<Bool> &IFs, |
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| 137 | Vector<uInt> &nChan, |
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| 138 | Vector<uInt> &nPol, |
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| 139 | Vector<Bool> &haveXPol, |
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| 140 | Bool &haveBase, |
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| 141 | Bool &haveSpectra) |
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| 142 | { |
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| 143 | Int nDir = directories.nelements(); |
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| 144 | for (iDir = 0; iDir < nDir; iDir++) { |
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| 145 | String inName = directories(iDir) + "/" + name; |
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| 146 | PKSreader *reader = getPKSreader(inName, retry, interpolate, format, |
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| 147 | beams, IFs, nChan, nPol, haveXPol, |
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| 148 | haveBase, haveSpectra); |
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| 149 | if (reader != 0) { |
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| 150 | return reader; |
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| 151 | } |
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| 152 | } |
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| 153 | |
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| 154 | iDir = -1; |
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| 155 | return 0; |
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| 156 | } |
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