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1 /* |
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2 |
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3 Copyright (C) 2003, 2004, 2005, 2006, 2007 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 3 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 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, see |
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19 <http://www.gnu.org/licenses/>. |
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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 #include "oct-hdf5.h" |
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29 |
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30 // first, we need to define our own dummy stream subclass, since |
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31 // HDF5 needs to do its own file i/o |
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32 |
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33 // hdf5_fstreambase is used for both input and output streams, modeled |
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34 // on the fstreambase class in <fstream.h> |
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35 |
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36 class hdf5_fstreambase : virtual public std::ios |
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37 { |
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38 public: |
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39 |
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40 // HDF5 uses an "id" to refer to an open file |
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41 hid_t file_id; |
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42 |
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43 // keep track of current item index in the file |
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44 int current_item; |
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45 |
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46 hdf5_fstreambase () { file_id = -1; } |
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47 |
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48 ~hdf5_fstreambase () { close (); } |
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49 |
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50 hdf5_fstreambase (const char *name, int mode, int /* prot */ = 0) |
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51 { |
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52 if (mode & std::ios::in) |
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53 file_id = H5Fopen (name, H5F_ACC_RDONLY, H5P_DEFAULT); |
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54 else if (mode & std::ios::out) |
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55 { |
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56 if (mode & std::ios::app && H5Fis_hdf5 (name) > 0) |
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57 file_id = H5Fopen (name, H5F_ACC_RDWR, H5P_DEFAULT); |
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58 else |
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59 file_id = H5Fcreate (name, H5F_ACC_TRUNC, H5P_DEFAULT, |
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60 H5P_DEFAULT); |
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61 } |
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62 if (file_id < 0) |
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63 std::ios::setstate (std::ios::badbit); |
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64 |
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65 current_item = 0; |
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66 } |
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67 |
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68 void close () |
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69 { |
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70 if (file_id >= 0) |
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71 { |
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72 if (H5Fclose (file_id) < 0) |
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73 std::ios::setstate (std::ios::badbit); |
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74 file_id = -1; |
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75 } |
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76 } |
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77 |
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78 void open (const char *name, int mode, int) |
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79 { |
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80 clear (); |
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81 |
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82 if (mode & std::ios::in) |
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83 file_id = H5Fopen (name, H5F_ACC_RDONLY, H5P_DEFAULT); |
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84 else if (mode & std::ios::out) |
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85 { |
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86 if (mode & std::ios::app && H5Fis_hdf5 (name) > 0) |
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87 file_id = H5Fopen (name, H5F_ACC_RDWR, H5P_DEFAULT); |
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88 else |
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89 file_id = H5Fcreate (name, H5F_ACC_TRUNC, H5P_DEFAULT, |
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90 H5P_DEFAULT); |
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91 } |
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92 if (file_id < 0) |
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93 std::ios::setstate (std::ios::badbit); |
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94 |
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95 current_item = 0; |
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96 } |
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97 }; |
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98 |
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99 // input and output streams, subclassing istream and ostream |
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100 // so that we can pass them for stream parameters in the functions below. |
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101 |
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102 class hdf5_ifstream : public hdf5_fstreambase, public std::istream |
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103 { |
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104 public: |
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105 |
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106 hdf5_ifstream () : hdf5_fstreambase (), std::istream (0) { } |
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107 |
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108 hdf5_ifstream (const char *name, int mode = std::ios::in|std::ios::binary, |
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109 int prot = 0) |
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110 : hdf5_fstreambase (name, mode, prot), std::istream (0) { } |
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111 |
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112 void open (const char *name, int mode = std::ios::in|std::ios::binary, |
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113 int prot = 0) |
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114 { hdf5_fstreambase::open (name, mode, prot); } |
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115 }; |
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116 |
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117 class hdf5_ofstream : public hdf5_fstreambase, public std::ostream |
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118 { |
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119 public: |
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120 |
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121 hdf5_ofstream () : hdf5_fstreambase (), std::ostream (0) { } |
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122 |
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123 hdf5_ofstream (const char *name, int mode = std::ios::out|std::ios::binary, |
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124 int prot = 0) |
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125 : hdf5_fstreambase (name, mode, prot), std::ostream (0) { } |
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126 |
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127 void open (const char *name, int mode = std::ios::out|std::ios::binary, |
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128 int prot = 0) |
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129 { hdf5_fstreambase::open (name, mode, prot); } |
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130 }; |
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131 |
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132 // Callback data structure for passing data to hdf5_read_next_data, below. |
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133 |
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134 struct |
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135 hdf5_callback_data |
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136 { |
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137 hdf5_callback_data (void) |
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138 : name (), global (false), tc (), doc () { } |
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139 |
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140 // the following fields are set by hdf5_read_data on successful return: |
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141 |
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142 // the name of the variable |
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143 std::string name; |
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144 |
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145 // whether it is global |
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146 bool global; |
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147 |
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148 // the value of the variable, in Octave form |
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149 octave_value tc; |
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150 |
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151 // a documentation string (NULL if none) |
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152 std::string doc; |
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153 }; |
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154 |
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155 #if HAVE_HDF5_INT2FLOAT_CONVERSIONS |
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156 extern OCTINTERP_API hid_t |
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157 save_type_to_hdf5 (save_type st) |
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158 #endif |
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159 |
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160 extern OCTINTERP_API hid_t |
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161 hdf5_make_complex_type (hid_t num_type); |
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162 |
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163 extern OCTINTERP_API bool |
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164 hdf5_types_compatible (hid_t t1, hid_t t2); |
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165 |
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166 extern OCTINTERP_API herr_t |
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167 hdf5_read_next_data (hid_t group_id, const char *name, void *dv); |
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168 |
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169 extern OCTINTERP_API bool |
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170 add_hdf5_data (hid_t loc_id, const octave_value& tc, |
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171 const std::string& name, const std::string& doc, |
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172 bool mark_as_global, bool save_as_floats); |
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173 |
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174 extern OCTINTERP_API int |
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175 save_hdf5_empty (hid_t loc_id, const char *name, const dim_vector d); |
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176 |
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177 extern OCTINTERP_API int |
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178 load_hdf5_empty (hid_t loc_id, const char *name, dim_vector &d); |
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179 |
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180 extern OCTINTERP_API std::string |
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181 read_hdf5_data (std::istream& is, const std::string& filename, bool& global, |
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182 octave_value& tc, std::string& doc); |
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183 |
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184 extern OCTINTERP_API bool |
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185 save_hdf5_data (std::ostream& os, const octave_value& tc, |
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186 const std::string& name, const std::string& doc, |
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187 bool mark_as_global, bool save_as_floats); |
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188 |
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189 #ifdef IDX_TYPE_LONG |
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190 #define H5T_NATIVE_IDX H5T_NATIVE_LONG |
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191 #else |
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192 #define H5T_NATIVE_IDX H5T_NATIVE_INT |
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193 #endif |
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194 |
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195 #endif |
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196 |
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197 #endif |
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198 |
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199 /* |
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200 ;;; Local Variables: *** |
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201 ;;; mode: C++ *** |
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202 ;;; End: *** |
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203 */ |
