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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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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22 */ |
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23 |
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24 #if !defined (octave_ls_hdf5_h) |
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25 #define octave_ls_hdf5_h 1 |
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26 |
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27 #if defined (HAVE_HDF5) |
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28 |
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29 // first, we need to define our own dummy stream subclass, since |
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30 // HDF5 needs to do its own file i/o |
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31 |
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32 // hdf5_fstreambase is used for both input and output streams, modeled |
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33 // on the fstreambase class in <fstream.h> |
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34 |
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35 class hdf5_fstreambase : virtual public std::ios |
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36 { |
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37 public: |
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38 |
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39 // HDF5 uses an "id" to refer to an open file |
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40 hid_t file_id; |
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41 |
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42 // keep track of current item index in the file |
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43 int current_item; |
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44 |
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45 hdf5_fstreambase () { file_id = -1; } |
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46 |
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47 hdf5_fstreambase (const char *name, int mode, int /* prot */ = 0) |
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48 { |
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49 if (mode & std::ios::in) |
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50 file_id = H5Fopen (name, H5F_ACC_RDONLY, H5P_DEFAULT); |
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51 else if (mode & std::ios::out) |
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52 file_id = H5Fcreate (name, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT); |
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53 |
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54 if (file_id < 0) |
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55 std::ios::setstate (std::ios::badbit); |
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56 |
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57 current_item = 0; |
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58 } |
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59 |
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60 void close () |
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61 { |
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62 if (file_id >= 0) |
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63 { |
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64 if (H5Fclose (file_id) < 0) |
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65 std::ios::setstate (std::ios::badbit); |
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66 file_id = -1; |
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67 } |
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68 } |
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69 |
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70 void open (const char *name, int mode, int prot = 0) |
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71 { |
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72 clear (); |
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73 |
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74 if (mode & std::ios::in) |
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75 file_id = H5Fopen (name, H5F_ACC_RDONLY, H5P_DEFAULT); |
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76 else if (mode & std::ios::out) |
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77 file_id = H5Fcreate (name, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT); |
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78 |
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79 if (file_id < 0) |
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80 std::ios::setstate (std::ios::badbit); |
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81 |
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82 current_item = 0; |
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83 } |
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84 }; |
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85 |
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86 // input and output streams, subclassing istream and ostream |
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87 // so that we can pass them for stream parameters in the functions below. |
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88 |
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89 class hdf5_ifstream : public hdf5_fstreambase, public std::istream |
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90 { |
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91 public: |
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92 |
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93 hdf5_ifstream () : hdf5_fstreambase (), std::istream (0) { } |
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94 |
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95 hdf5_ifstream (const char *name, int mode = std::ios::in|std::ios::binary, |
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96 int prot = 0) |
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97 : hdf5_fstreambase (name, mode, prot), std::istream (0) { } |
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98 |
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99 void open (const char *name, int mode = std::ios::in|std::ios::binary, |
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100 int prot = 0) |
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101 { hdf5_fstreambase::open (name, mode, prot); } |
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102 }; |
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103 |
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104 class hdf5_ofstream : public hdf5_fstreambase, public std::ostream |
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105 { |
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106 public: |
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107 |
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108 hdf5_ofstream () : hdf5_fstreambase (), std::ostream (0) { } |
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109 |
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110 hdf5_ofstream (const char *name, int mode = std::ios::out|std::ios::binary, |
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111 int prot = 0) |
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112 : hdf5_fstreambase (name, mode, prot), std::ostream (0) { } |
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113 |
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114 void open (const char *name, int mode = std::ios::out|std::ios::binary, |
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115 int prot = 0) |
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116 { hdf5_fstreambase::open (name, mode, prot); } |
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117 }; |
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118 |
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119 // Callback data structure for passing data to hdf5_read_next_data, below. |
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120 |
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121 struct |
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122 hdf5_callback_data |
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123 { |
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124 hdf5_callback_data (void) |
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125 : name (), global (false), tc (), doc () { } |
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126 |
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127 // the following fields are set by hdf5_read_data on successful return: |
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128 |
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129 // the name of the variable |
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130 std::string name; |
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131 |
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132 // whether it is global |
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133 bool global; |
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134 |
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135 // the value of the variable, in Octave form |
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136 octave_value tc; |
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137 |
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138 // a documentation string (NULL if none) |
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139 std::string doc; |
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140 }; |
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141 |
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142 #if HAVE_HDF5_INT2FLOAT_CONVERSIONS |
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143 extern hid_t |
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144 save_type_to_hdf5 (save_type st) |
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145 #endif |
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146 |
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147 extern hid_t |
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148 hdf5_make_complex_type (hid_t num_type); |
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149 |
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150 extern bool |
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151 hdf5_types_compatible (hid_t t1, hid_t t2); |
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152 |
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153 extern herr_t |
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154 hdf5_read_next_data (hid_t group_id, const char *name, void *dv); |
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155 |
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156 extern bool |
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157 add_hdf5_data (hid_t loc_id, const octave_value& tc, |
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158 const std::string& name, const std::string& doc, |
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159 bool mark_as_global, bool save_as_floats); |
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160 |
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161 extern int |
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162 save_hdf5_empty (hid_t loc_id, const char *name, const dim_vector d); |
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163 |
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164 extern int |
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165 load_hdf5_empty (hid_t loc_id, const char *name, dim_vector &d); |
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166 |
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167 extern std::string |
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168 read_hdf5_data (std::istream& is, const std::string& filename, bool& global, |
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169 octave_value& tc, std::string& doc); |
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170 |
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171 extern bool |
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172 save_hdf5_data (std::ostream& os, const octave_value& tc, |
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173 const std::string& name, const std::string& doc, |
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174 bool mark_as_global, bool save_as_floats); |
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175 |
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176 #ifdef IDX_TYPE_LONG |
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177 #define H5T_NATIVE_IDX H5T_NATIVE_LONG |
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178 #else |
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179 #define H5T_NATIVE_IDX H5T_NATIVE_INT |
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180 #endif |
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181 |
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182 #endif |
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183 |
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184 #endif |
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185 |
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186 /* |
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187 ;;; Local Variables: *** |
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188 ;;; mode: C++ *** |
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189 ;;; End: *** |
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190 */ |
