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 | char buf[80]; |
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82 | //file.read(30, buf, False); |
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83 | file.read(80, buf, False); |
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84 | //buf[30] = '\0'; |
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85 | //if (String(buf) == "SIMPLE = T") { |
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86 | if (String(buf).contains("SIMPLE = T")) { |
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87 | //file.seek(560); |
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88 | //file.read(26, buf, False); |
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89 | //buf[26] = '\0' ; |
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90 | Int nbread=1; |
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91 | while (nbread) { |
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92 | nbread=file.read(80, buf, False); |
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93 | //if ( String(buf) == "ORIGIN = 'NRAO Green Bank" ) { |
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94 | if ( String(buf).contains("ORIGIN = 'NRAO Green Bank" )) { |
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95 | // Looks like GBT SDFITS |
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96 | format = "GBTFITS" ; |
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97 | reader = new PKSFITSreader("GBTFITS") ; |
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98 | break; |
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99 | } |
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100 | else { |
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101 | if ( String(buf).find("END ")==0 ) { |
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102 | // Looks like SDFITS. |
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103 | format = "SDFITS"; |
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104 | reader = new PKSFITSreader("SDFITS"); |
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105 | break; |
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106 | } |
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107 | } |
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108 | }//while loop |
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109 | } else { |
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110 | // Assume it's MBFITS. |
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111 | format = "MBFITS"; |
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112 | reader = new PKSFITSreader("MBFITS", retry, interpolate); |
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113 | } |
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114 | } |
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115 | |
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116 | } else if (inFile.isDirectory()) { |
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117 | Bool isMS = ( (File(name+"/table.info").exists()) |
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118 | && File(name+"/table.dat").exists() ); |
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119 | if (isMS) { |
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120 | RegularFileIO ifs(name+"/table.info") ; |
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121 | char buf[128] ; |
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122 | ifs.read(sizeof(buf),buf,False) ; |
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123 | if ( strstr( buf, "Measurement Set" ) == NULL ) |
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124 | isMS = False ; |
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125 | } |
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126 | //if (File(name + "/DATA_DESCRIPTION").exists()) { |
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127 | if (isMS) { |
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128 | // MS version 2. |
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129 | #ifdef NOPKSMS |
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130 | format = "MS2 INPUT FORMAT IS NO LONGER SUPPORTED"; |
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131 | #else |
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132 | format = "MS2"; |
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133 | reader = new PKSMS2reader(); |
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134 | #endif |
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135 | } |
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136 | |
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137 | } else { |
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138 | format = "UNRECOGNIZED INPUT FORMAT"; |
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139 | } |
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140 | return reader; |
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141 | } |
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142 | |
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143 | //--------------------------------------------------------------- getPKSreader |
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144 | |
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145 | // Search a list of directories for a Parkes Multibeam dataset and return an |
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146 | |
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147 | PKSreader* getPKSreader( |
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148 | const String name, |
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149 | const Vector<String> directories, |
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150 | const Int retry, |
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151 | const Int interpolate, |
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152 | Int &iDir, |
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153 | String &format) |
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154 | { |
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155 | PKSreader *reader = 0x0; |
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156 | |
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157 | iDir = -1; |
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158 | Int nDir = directories.nelements(); |
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159 | for (Int i = 0; i < nDir; i++) { |
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160 | String inName = directories(i) + "/" + name; |
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161 | reader = getPKSreader(inName, retry, interpolate, format); |
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162 | if (reader) { |
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163 | iDir = i; |
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164 | break; |
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165 | } |
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166 | } |
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167 | |
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168 | return reader; |
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169 | } |
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170 | |
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171 | //--------------------------------------------------------------- getPKSreader |
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172 | |
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173 | // Open an appropriate PKSreader for a Parkes Multibeam dataset. |
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174 | |
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175 | PKSreader* getPKSreader( |
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176 | const String name, |
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177 | const String antenna, |
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178 | const Int retry, |
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179 | const Int interpolate, |
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180 | String &format, |
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181 | Vector<Bool> &beams, |
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182 | Vector<Bool> &IFs, |
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183 | Vector<uInt> &nChan, |
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184 | Vector<uInt> &nPol, |
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185 | Vector<Bool> &haveXPol, |
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186 | Bool &haveBase, |
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187 | Bool &haveSpectra) |
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188 | { |
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189 | PKSreader *reader = getPKSreader(name, retry, interpolate, format); |
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190 | |
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191 | // Try to open it. |
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192 | if (reader) { |
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193 | if (reader->open(name, antenna, beams, IFs, nChan, nPol, haveXPol, |
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194 | haveBase, haveSpectra)) { |
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195 | format += " OPEN ERROR"; |
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196 | delete reader; |
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197 | reader = 0x0; |
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198 | } |
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199 | } |
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200 | |
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201 | return reader; |
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202 | } |
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203 | |
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204 | //--------------------------------------------------------------- getPKSreader |
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205 | |
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206 | // Search a list of directories for a Parkes Multibeam dataset and return an |
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207 | // appropriate PKSreader for it. |
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208 | PKSreader* getPKSreader( |
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209 | const String name, |
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210 | const String antenna, |
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211 | const Vector<String> directories, |
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212 | const Int retry, |
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213 | const Int interpolate, |
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214 | Int &iDir, |
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215 | String &format, |
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216 | Vector<Bool> &beams, |
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217 | Vector<Bool> &IFs, |
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218 | Vector<uInt> &nChan, |
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219 | Vector<uInt> &nPol, |
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220 | Vector<Bool> &haveXPol, |
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221 | Bool &haveBase, |
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222 | Bool &haveSpectra) |
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223 | { |
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224 | PKSreader *reader = getPKSreader(name, directories, retry, interpolate, |
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225 | iDir, format); |
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226 | |
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227 | // Try to open it. |
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228 | if (reader) { |
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229 | if (reader->open(name, antenna, beams, IFs, nChan, nPol, haveXPol, |
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230 | haveBase, haveSpectra)) { |
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231 | format += " OPEN ERROR"; |
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232 | delete reader; |
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233 | reader = 0x0; |
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234 | } |
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235 | } |
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236 | |
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237 | return reader; |
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238 | } |
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