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1 /* |
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2 |
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3 Copyright (C) 2003 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave 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 General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #if !defined (octave_ls_hdf5_h) |
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24 #define octave_ls_hdf5_h 1 |
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25 |
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26 #if defined (HAVE_HDF5) |
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27 |
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28 // first, we need to define our own dummy stream subclass, since |
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29 // HDF5 needs to do its own file i/o |
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30 |
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31 // hdf5_fstreambase is used for both input and output streams, modeled |
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32 // on the fstreambase class in <fstream.h> |
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33 |
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34 class hdf5_fstreambase : virtual public std::ios |
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35 { |
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36 public: |
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37 |
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38 // HDF5 uses an "id" to refer to an open file |
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39 hid_t file_id; |
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40 |
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41 // keep track of current item index in the file |
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42 int current_item; |
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43 |
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44 hdf5_fstreambase () { file_id = -1; } |
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45 |
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46 hdf5_fstreambase (const char *name, int mode, int /* prot */ = 0) |
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47 { |
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48 if (mode == std::ios::in) |
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49 file_id = H5Fopen (name, H5F_ACC_RDONLY, H5P_DEFAULT); |
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50 else if (mode == std::ios::out) |
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51 file_id = H5Fcreate (name, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT); |
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52 |
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53 if (file_id < 0) |
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54 std::ios::setstate (std::ios::badbit); |
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55 |
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56 current_item = 0; |
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57 } |
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58 |
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59 void close () |
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60 { |
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61 if (file_id >= 0) |
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62 { |
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63 if (H5Fclose (file_id) < 0) |
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64 std::ios::setstate (std::ios::badbit); |
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65 file_id = -1; |
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66 } |
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67 } |
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68 |
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69 void open (const char *name, int mode, int prot = 0) |
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70 { |
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71 clear (); |
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72 |
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73 if (mode == std::ios::in) |
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74 file_id = H5Fopen (name, H5F_ACC_RDONLY, H5P_DEFAULT); |
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75 else if (mode == std::ios::out) |
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76 file_id = H5Fcreate (name, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT); |
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77 |
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78 if (file_id < 0) |
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79 std::ios::setstate (std::ios::badbit); |
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80 |
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81 current_item = 0; |
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82 } |
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83 }; |
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84 |
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85 // input and output streams, subclassing istream and ostream |
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86 // so that we can pass them for stream parameters in the functions below. |
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87 |
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88 class hdf5_ifstream : public hdf5_fstreambase, public std::istream |
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89 { |
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90 public: |
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91 |
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92 hdf5_ifstream () : hdf5_fstreambase (), std::istream (0) { } |
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93 |
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94 hdf5_ifstream (const char *name, int mode = std::ios::in, int prot = 0) |
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95 : hdf5_fstreambase (name, mode, prot), std::istream (0) { } |
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96 |
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97 void open (const char *name, int mode = std::ios::in, int prot = 0) |
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98 { hdf5_fstreambase::open (name, mode, prot); } |
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99 }; |
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100 |
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101 class hdf5_ofstream : public hdf5_fstreambase, public std::ostream |
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102 { |
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103 public: |
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104 |
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105 hdf5_ofstream () : hdf5_fstreambase (), std::ostream (0) { } |
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106 |
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107 hdf5_ofstream (const char *name, int mode = std::ios::out, int prot = 0) |
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108 : hdf5_fstreambase (name, mode, prot), std::ostream (0) { } |
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109 |
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110 void open (const char *name, int mode = std::ios::out, int prot = 0) |
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111 { hdf5_fstreambase::open (name, mode, prot); } |
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112 }; |
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113 |
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114 // Callback data structure for passing data to hdf5_read_next_data, below. |
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115 |
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116 struct |
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117 hdf5_callback_data |
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118 { |
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119 hdf5_callback_data (void) |
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120 : name (), global (false), tc (), doc () { } |
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121 |
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122 // the following fields are set by hdf5_read_data on successful return: |
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123 |
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124 // the name of the variable |
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125 std::string name; |
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126 |
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127 // whether it is global |
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128 bool global; |
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129 |
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130 // the value of the variable, in Octave form |
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131 octave_value tc; |
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132 |
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133 // a documentation string (NULL if none) |
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134 std::string doc; |
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135 }; |
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136 |
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137 #if HAVE_HDF5_INT2FLOAT_CONVERSIONS |
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138 extern hid_t |
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139 save_type_to_hdf5 (save_type st) |
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140 #endif |
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141 |
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142 extern hid_t |
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143 hdf5_make_complex_type (hid_t num_type); |
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144 |
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145 extern bool |
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146 hdf5_types_compatible (hid_t t1, hid_t t2); |
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147 |
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148 extern herr_t |
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149 hdf5_read_next_data (hid_t group_id, const char *name, void *dv); |
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150 |
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151 extern bool |
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152 add_hdf5_data (hid_t loc_id, const octave_value& tc, |
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153 const std::string& name, const std::string& doc, |
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154 bool mark_as_global, bool save_as_floats); |
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155 |
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156 extern std::string |
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157 read_hdf5_data (std::istream& is, const std::string& filename, bool& global, |
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158 octave_value& tc, std::string& doc); |
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159 |
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160 extern bool |
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161 save_hdf5_data (std::ostream& os, const octave_value& tc, |
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162 const std::string& name, const std::string& doc, |
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163 bool mark_as_global, bool save_as_floats); |
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164 |
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165 #endif |
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166 |
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167 #endif |
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168 |
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169 /* |
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170 ;;; Local Variables: *** |
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171 ;;; mode: C++ *** |
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172 ;;; End: *** |
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173 */ |
