1 | //#--------------------------------------------------------------------------- |
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2 | //# PKSreader.cc: Class to read Parkes multibeam data. |
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3 | //#--------------------------------------------------------------------------- |
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4 | //# livedata - processing pipeline for single-dish, multibeam spectral data. |
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5 | //# Copyright (C) 2000-2009, Australia Telescope National Facility, CSIRO |
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6 | //# |
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7 | //# This file is part of livedata. |
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8 | //# |
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9 | //# livedata is free software: you can redistribute it and/or modify it under |
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10 | //# the terms of the GNU General Public License as published by the Free |
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11 | //# Software Foundation, either version 3 of the License, or (at your option) |
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12 | //# any later version. |
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13 | //# |
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14 | //# livedata is distributed in the hope that it will be useful, but WITHOUT |
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15 | //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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16 | //# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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17 | //# more details. |
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18 | //# |
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19 | //# You should have received a copy of the GNU General Public License along |
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20 | //# with livedata. If not, see <http://www.gnu.org/licenses/>. |
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21 | //# |
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22 | //# Correspondence concerning livedata may be directed to: |
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23 | //# Internet email: mcalabre@atnf.csiro.au |
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24 | //# Postal address: Dr. Mark Calabretta |
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25 | //# Australia Telescope National Facility, CSIRO |
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26 | //# PO Box 76 |
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27 | //# Epping NSW 1710 |
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28 | //# AUSTRALIA |
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29 | //# |
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30 | //# http://www.atnf.csiro.au/computing/software/livedata.html |
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31 | //# $Id: PKSreader.cc,v 19.13 2009-09-29 07:33:39 cal103 Exp $ |
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32 | //#--------------------------------------------------------------------------- |
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33 | //# Original: 2000/08/23, Mark Calabretta, ATNF |
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34 | //#--------------------------------------------------------------------------- |
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35 | |
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36 | #include <atnf/PKSIO/PKSreader.h> |
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37 | #include <atnf/PKSIO/PKSFITSreader.h> |
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38 | |
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39 | #ifndef NOPKSMS |
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40 | #include <atnf/PKSIO/PKSMS2reader.h> |
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41 | #endif |
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42 | |
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43 | #include <casa/IO/RegularFileIO.h> |
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44 | #include <casa/OS/File.h> |
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45 | #include <string.h> |
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46 | |
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47 | //--------------------------------------------------------------- getPKSreader |
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48 | |
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49 | // Return an appropriate PKSreader for a Parkes Multibeam dataset. |
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50 | |
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51 | PKSreader* getPKSreader( |
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52 | const String name, |
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53 | const Int retry, |
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54 | const Int interpolate, |
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55 | String &format) |
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56 | { |
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57 | // Check accessibility of the input. |
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58 | File inFile(name); |
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59 | if (!inFile.exists()) { |
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60 | format = "DATASET NOT FOUND"; |
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61 | return 0x0; |
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62 | } |
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63 | |
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64 | if (!inFile.isReadable()) { |
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65 | format = "DATASET UNREADABLE"; |
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66 | return 0x0; |
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67 | } |
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68 | |
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69 | // Determine the type of input. |
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70 | PKSreader *reader = 0x0; |
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71 | if (inFile.isRegular()) { |
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72 | // Is it MBFITS or SDFITS? |
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73 | if (strstr(name.chars(), ".sdfits")) { |
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74 | // Looks like SDFITS, possibly gzip'd. |
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75 | format = "SDFITS"; |
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76 | reader = new PKSFITSreader("SDFITS"); |
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77 | |
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78 | } else { |
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79 | RegularFileIO file(name); |
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80 | char buf[32]; |
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81 | file.read(30, buf, False); |
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82 | buf[30] = '\0'; |
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83 | if (String(buf) == "SIMPLE = T") { |
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84 | file.seek(560); |
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85 | file.read(26, buf, False); |
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86 | buf[26] = '\0' ; |
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87 | if ( String(buf) == "ORIGIN = 'NRAO Green Bank" ) { |
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88 | // Looks like GBT SDFITS |
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89 | format = "GBTFITS" ; |
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90 | reader = new PKSFITSreader("GBTFITS") ; |
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91 | } |
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92 | else { |
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93 | // Looks like SDFITS. |
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94 | format = "SDFITS"; |
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95 | reader = new PKSFITSreader("SDFITS"); |
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96 | } |
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97 | } else { |
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98 | // Assume it's MBFITS. |
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99 | format = "MBFITS"; |
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100 | reader = new PKSFITSreader("MBFITS", retry, interpolate); |
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101 | } |
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102 | } |
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103 | |
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104 | } else if (inFile.isDirectory()) { |
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105 | Bool isMS = ( (File(name+"/table.info").exists()) |
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106 | && File(name+"/table.dat").exists() ); |
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107 | if (isMS) { |
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108 | RegularFileIO ifs(name+"/table.info") ; |
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109 | char buf[128] ; |
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110 | ifs.read(sizeof(buf),buf,False) ; |
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111 | if ( strstr( buf, "Measurement Set" ) == NULL ) |
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112 | isMS = False ; |
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113 | } |
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114 | //if (File(name + "/DATA_DESCRIPTION").exists()) { |
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115 | if (isMS) { |
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116 | // MS version 2. |
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117 | #ifdef NOPKSMS |
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118 | format = "MS2 INPUT FORMAT IS NO LONGER SUPPORTED"; |
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119 | #else |
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120 | format = "MS2"; |
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121 | reader = new PKSMS2reader(); |
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122 | #endif |
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123 | } |
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124 | |
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125 | } else { |
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126 | format = "UNRECOGNIZED INPUT FORMAT"; |
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127 | } |
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128 | return reader; |
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129 | } |
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130 | |
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131 | //--------------------------------------------------------------- getPKSreader |
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132 | |
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133 | // Search a list of directories for a Parkes Multibeam dataset and return an |
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134 | |
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135 | PKSreader* getPKSreader( |
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136 | const String name, |
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137 | const Vector<String> directories, |
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138 | const Int retry, |
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139 | const Int interpolate, |
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140 | Int &iDir, |
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141 | String &format) |
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142 | { |
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143 | PKSreader *reader = 0x0; |
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144 | |
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145 | iDir = -1; |
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146 | Int nDir = directories.nelements(); |
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147 | for (Int i = 0; i < nDir; i++) { |
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148 | String inName = directories(i) + "/" + name; |
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149 | reader = getPKSreader(inName, retry, interpolate, format); |
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150 | if (reader) { |
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151 | iDir = i; |
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152 | break; |
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153 | } |
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154 | } |
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155 | |
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156 | return reader; |
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157 | } |
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158 | |
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159 | //--------------------------------------------------------------- getPKSreader |
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160 | |
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161 | // Open an appropriate PKSreader for a Parkes Multibeam dataset. |
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162 | |
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163 | PKSreader* getPKSreader( |
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164 | const String name, |
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165 | const String antenna, |
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166 | const Int retry, |
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167 | const Int interpolate, |
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168 | String &format, |
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169 | Vector<Bool> &beams, |
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170 | Vector<Bool> &IFs, |
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171 | Vector<uInt> &nChan, |
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172 | Vector<uInt> &nPol, |
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173 | Vector<Bool> &haveXPol, |
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174 | Bool &haveBase, |
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175 | Bool &haveSpectra) |
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176 | { |
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177 | PKSreader *reader = getPKSreader(name, retry, interpolate, format); |
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178 | |
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179 | // Try to open it. |
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180 | if (reader) { |
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181 | if (reader->open(name, antenna, beams, IFs, nChan, nPol, haveXPol, |
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182 | haveBase, haveSpectra)) { |
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183 | format += " OPEN ERROR"; |
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184 | delete reader; |
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185 | reader = 0x0; |
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186 | } |
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187 | } |
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188 | |
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189 | return reader; |
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190 | } |
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191 | |
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192 | //--------------------------------------------------------------- getPKSreader |
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193 | |
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194 | // Search a list of directories for a Parkes Multibeam dataset and return an |
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195 | // appropriate PKSreader for it. |
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196 | PKSreader* getPKSreader( |
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197 | const String name, |
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198 | const String antenna, |
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199 | const Vector<String> directories, |
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200 | const Int retry, |
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201 | const Int interpolate, |
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202 | Int &iDir, |
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203 | String &format, |
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204 | Vector<Bool> &beams, |
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205 | Vector<Bool> &IFs, |
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206 | Vector<uInt> &nChan, |
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207 | Vector<uInt> &nPol, |
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208 | Vector<Bool> &haveXPol, |
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209 | Bool &haveBase, |
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210 | Bool &haveSpectra) |
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211 | { |
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212 | PKSreader *reader = getPKSreader(name, directories, retry, interpolate, |
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213 | iDir, format); |
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214 | |
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215 | // Try to open it. |
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216 | if (reader) { |
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217 | if (reader->open(name, antenna, beams, IFs, nChan, nPol, haveXPol, |
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218 | haveBase, haveSpectra)) { |
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219 | format += " OPEN ERROR"; |
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220 | delete reader; |
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221 | reader = 0x0; |
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222 | } |
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223 | } |
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224 | |
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225 | return reader; |
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226 | } |
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