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 | //# $Id$ |
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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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