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4634
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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 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 // Author: James R. Van Zandt <jrv@vanzandt.mv.com> |
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24 |
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25 #ifdef HAVE_CONFIG_H |
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26 #include <config.h> |
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27 #endif |
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28 |
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29 #include <cfloat> |
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30 #include <cstring> |
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31 #include <cctype> |
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32 |
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33 #include <fstream> |
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34 #include <iomanip> |
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35 #include <iostream> |
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36 #include <string> |
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4726
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37 #include <vector> |
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4634
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38 |
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39 #include "byte-swap.h" |
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40 #include "data-conv.h" |
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41 #include "file-ops.h" |
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42 #include "glob-match.h" |
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43 #include "lo-mappers.h" |
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44 #include "lo-sstream.h" |
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45 #include "mach-info.h" |
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46 #include "oct-env.h" |
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47 #include "oct-time.h" |
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48 #include "quit.h" |
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49 #include "str-vec.h" |
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50 |
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51 #include "Cell.h" |
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52 #include "defun.h" |
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53 #include "error.h" |
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54 #include "gripes.h" |
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55 #include "load-save.h" |
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56 #include "oct-obj.h" |
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57 #include "oct-map.h" |
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58 #include "ov-cell.h" |
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59 #include "pager.h" |
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60 #include "pt-exp.h" |
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61 #include "symtab.h" |
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62 #include "sysdep.h" |
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63 #include "unwind-prot.h" |
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64 #include "utils.h" |
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65 #include "variables.h" |
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66 #include "version.h" |
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67 #include "dMatrix.h" |
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68 |
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69 #include "ls-utils.h" |
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70 #include "ls-mat5.h" |
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71 |
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72 #define PAD(l) (((l)<=4)?4:(((l)+7)/8)*8) |
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73 #define TAGLENGTH(l) ((l)<=4?4:8) |
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74 |
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75 enum arrayclasstype |
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76 { |
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77 mxCELL_CLASS=1, // cell array |
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78 mxSTRUCT_CLASS, // structure |
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79 mxOBJECT_CLASS, // object |
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80 mxCHAR_CLASS, // character array |
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81 mxSPARSE_CLASS, // sparse array |
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82 mxDOUBLE_CLASS, // double precision array |
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83 mxSINGLE_CLASS, // single precision floating point |
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84 mxINT8_CLASS, // 8 bit signed integer |
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85 mxUINT8_CLASS, // 8 bit unsigned integer |
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86 mxINT16_CLASS, // 16 bit signed integer |
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87 mxUINT16_CLASS, // 16 bit unsigned integer |
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88 mxINT32_CLASS, // 32 bit signed integer |
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89 mxUINT32_CLASS // 32 bit unsigned integer |
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90 }; |
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91 |
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92 // Read COUNT elements of data from IS in the format specified by TYPE, |
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93 // placing the result in DATA. If SWAP is TRUE, swap the bytes of |
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94 // each element before copying to DATA. FLT_FMT specifies the format |
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95 // of the data if we are reading floating point numbers. |
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96 |
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97 static void |
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98 read_mat5_binary_data (std::istream& is, double *data, |
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99 int count, bool swap, mat5_data_type type, |
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100 oct_mach_info::float_format flt_fmt) |
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101 { |
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102 |
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103 switch (type) |
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104 { |
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105 case miINT8: |
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106 read_doubles (is, data, LS_CHAR, count, swap, flt_fmt); |
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107 break; |
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108 |
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109 case miUINT8: |
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110 read_doubles (is, data, LS_U_CHAR, count, swap, flt_fmt); |
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111 break; |
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112 |
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113 case miINT16: |
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114 read_doubles (is, data, LS_SHORT, count, swap, flt_fmt); |
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115 break; |
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116 |
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117 case miUINT16: |
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118 read_doubles (is, data, LS_U_SHORT, count, swap, flt_fmt); |
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119 break; |
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120 |
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121 case miINT32: |
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122 read_doubles (is, data, LS_INT, count, swap, flt_fmt); |
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123 break; |
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124 |
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125 case miUINT32: |
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126 read_doubles (is, data, LS_U_INT, count, swap, flt_fmt); |
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127 break; |
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128 |
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129 case miSINGLE: |
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130 read_doubles (is, data, LS_FLOAT, count, swap, flt_fmt); |
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131 break; |
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132 |
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133 case miRESERVE1: |
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134 break; |
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135 |
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136 case miDOUBLE: |
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137 read_doubles (is, data, LS_DOUBLE, count, swap, flt_fmt); |
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138 break; |
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139 |
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140 case miRESERVE2: |
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141 case miRESERVE3: |
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142 break; |
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143 |
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144 case miINT64: |
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145 #ifdef EIGHT_BYTE_INT |
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146 read_doubles (is, data, LS_LONG, count, swap, flt_fmt); |
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147 #endif |
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148 break; |
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149 |
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150 case miUINT64: |
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151 #ifdef EIGHT_BYTE_INT |
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152 read_doubles (is, data, LS_U_LONG, count, swap, flt_fmt); |
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153 #endif |
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154 break; |
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155 |
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156 case miMATRIX: |
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157 default: |
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158 break; |
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159 } |
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160 } |
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161 |
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162 // Read one element tag from stream IS, |
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163 // place the type code in TYPE and the byte count in BYTES |
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164 // return nonzero on error |
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165 static int |
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166 read_mat5_tag (std::istream& is, bool swap, int& type, int& bytes) |
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167 { |
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168 unsigned int upper; |
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169 FOUR_BYTE_INT temp; |
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170 |
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171 if (! is.read (X_CAST (char *, &temp), 4 )) |
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172 goto data_read_error; |
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173 |
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174 if (swap) |
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4944
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175 swap_bytes<4> (&temp); |
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4634
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176 |
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177 upper = (temp >> 16) & 0xffff; |
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178 type = temp & 0xffff; |
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179 |
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180 if (upper) |
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181 { |
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182 // "compressed" format |
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183 bytes = upper; |
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184 } |
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185 else |
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186 { |
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187 if (! is.read (X_CAST (char *, &temp), 4 )) |
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188 goto data_read_error; |
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189 if (swap) |
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4944
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190 swap_bytes<4> (&temp); |
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4634
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191 bytes = temp; |
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192 } |
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193 |
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194 return 0; |
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195 |
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196 data_read_error: |
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197 return 1; |
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198 } |
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199 |
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4944
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200 static void |
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201 read_int (std::istream& is, bool swap, FOUR_BYTE_INT& val) |
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202 { |
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203 is.read (reinterpret_cast<char *> (&val), 4); |
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204 |
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205 if (swap) |
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206 swap_bytes<4> (&val); |
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207 } |
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208 |
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4634
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209 // Extract one data element (scalar, matrix, string, etc.) from stream |
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210 // IS and place it in TC, returning the name of the variable. |
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211 // |
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212 // The data is expected to be in Matlab's "Version 5" .mat format, |
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213 // though not all the features of that format are supported. |
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214 // |
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215 // FILENAME is used for error messages. |
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216 |
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217 std::string |
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218 read_mat5_binary_element (std::istream& is, const std::string& filename, |
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219 bool swap, bool& global, octave_value& tc) |
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220 { |
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221 std::string retval; |
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222 |
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223 // These are initialized here instead of closer to where they are |
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224 // first used to avoid errors from gcc about goto crossing |
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225 // initialization of variable. |
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226 |
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227 NDArray re; |
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228 oct_mach_info::float_format flt_fmt = oct_mach_info::flt_fmt_unknown; |
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229 int type = 0; |
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230 bool imag; |
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231 bool logicalvar; |
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232 enum arrayclasstype arrayclass; |
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233 FOUR_BYTE_INT junk; |
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234 FOUR_BYTE_INT flags; |
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235 dim_vector dims; |
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236 int len; |
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237 int element_length; |
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238 std::streampos pos; |
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239 TWO_BYTE_INT number; |
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240 number = *(TWO_BYTE_INT *)"\x00\x01"; |
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241 |
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242 global = false; |
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243 |
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244 // MAT files always use IEEE floating point |
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245 if ((number == 1) ^ swap) |
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246 flt_fmt = oct_mach_info::flt_fmt_ieee_big_endian; |
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247 else |
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248 flt_fmt = oct_mach_info::flt_fmt_ieee_little_endian; |
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249 |
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250 // element type and length |
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251 if (read_mat5_tag (is, swap, type, element_length)) |
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252 return retval; // EOF |
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253 |
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254 if (type != miMATRIX) |
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255 { |
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256 error ("load: invalid element type"); |
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257 goto early_read_error; |
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258 } |
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259 |
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260 if (element_length == 0) |
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261 { |
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262 tc = Matrix (); |
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263 return retval; |
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264 } |
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265 |
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266 pos = is.tellg (); |
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267 |
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268 // array flags subelement |
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269 if (read_mat5_tag (is, swap, type, len) || type != miUINT32 || len != 8) |
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270 { |
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271 error ("load: invalid array flags subelement"); |
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272 goto early_read_error; |
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273 } |
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274 |
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275 read_int (is, swap, flags); |
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276 imag = (flags & 0x0800) != 0; // has an imaginary part? |
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277 global = (flags & 0x0400) != 0; // global variable? |
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278 logicalvar = (flags & 0x0200) != 0; // we don't use this yet |
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279 arrayclass = (arrayclasstype)(flags & 0xff); |
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280 read_int (is, swap, junk); // an "undefined" entry |
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281 |
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282 // dimensions array subelement |
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283 { |
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4638
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284 FOUR_BYTE_INT dim_len; |
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285 |
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286 if (read_mat5_tag (is, swap, type, dim_len) || type != miINT32) |
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4634
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287 { |
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288 error ("load: invalid dimensions array subelement"); |
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289 goto early_read_error; |
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290 } |
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291 |
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4638
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292 int ndims = dim_len / 4; |
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4634
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293 dims.resize (ndims); |
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294 for (int i = 0; i < ndims; i++) |
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295 { |
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296 FOUR_BYTE_INT n; |
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297 read_int (is, swap, n); |
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298 dims(i) = n; |
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299 } |
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300 re.resize (dims); |
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301 |
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302 std::streampos tmp_pos = is.tellg (); |
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4638
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303 is.seekg (tmp_pos + static_cast<std::streamoff> (PAD (dim_len) - dim_len)); |
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4634
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304 } |
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305 |
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306 if (read_mat5_tag (is, swap, type, len) || type != miINT8) |
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307 { |
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308 error ("load: invalid array name subelement"); |
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309 goto early_read_error; |
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310 } |
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311 |
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312 { |
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313 OCTAVE_LOCAL_BUFFER (char, name, len+1); |
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314 |
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315 // Structure field subelements have zero-length array name subelements. |
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316 |
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317 std::streampos tmp_pos = is.tellg (); |
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318 |
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319 if (len) |
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320 { |
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321 if (! is.read (X_CAST (char *, name), len )) |
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322 goto data_read_error; |
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323 |
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324 is.seekg (tmp_pos + static_cast<std::streamoff> (PAD (len))); |
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325 } |
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326 |
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327 name[len] = '\0'; |
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328 retval = name; |
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329 } |
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330 |
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331 switch (arrayclass) |
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332 { |
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333 case mxCELL_CLASS: |
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334 { |
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335 Cell cell_array (dims); |
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336 |
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337 int n = cell_array.length (); |
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338 |
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339 for (int i = 0; i < n; i++) |
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340 { |
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341 octave_value tc2; |
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342 |
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343 std::string nm |
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344 = read_mat5_binary_element (is, filename, swap, global, tc2); |
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345 |
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346 if (! is || error_state) |
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347 { |
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348 error ("load: reading cell data for `%s'", nm.c_str ()); |
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349 goto data_read_error; |
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350 } |
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351 |
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352 cell_array(i) = tc2; |
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353 } |
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354 |
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355 tc = cell_array; |
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356 } |
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357 break; |
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358 |
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359 case mxOBJECT_CLASS: |
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360 warning ("load: objects are not implemented"); |
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361 goto skip_ahead; |
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362 |
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363 case mxSPARSE_CLASS: |
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364 warning ("load: sparse arrays are not implemented"); |
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365 goto skip_ahead; |
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366 |
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367 case mxSTRUCT_CLASS: |
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368 { |
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369 Octave_map m; |
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370 FOUR_BYTE_INT fn_type; |
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371 FOUR_BYTE_INT fn_len; |
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372 FOUR_BYTE_INT field_name_length; |
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373 int i; |
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374 |
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375 // field name length subelement -- actually the maximum length |
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376 // of a field name. The Matlab docs promise this will always |
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377 // be 32. We read and use the actual value, on the theory |
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378 // that eventually someone will recognize that's a waste of |
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379 // space. |
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380 if (read_mat5_tag (is, swap, fn_type, fn_len) || fn_type != miINT32) |
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381 { |
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382 error ("load: invalid field name subelement"); |
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383 goto data_read_error; |
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384 } |
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385 |
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386 if (! is.read (X_CAST (char *, &field_name_length), fn_len )) |
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387 goto data_read_error; |
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388 |
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389 if (swap) |
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4944
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390 swap_bytes<4> (&field_name_length); |
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4634
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391 |
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392 // field name subelement. The length of this subelement tells |
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393 // us how many fields there are. |
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394 if (read_mat5_tag (is, swap, fn_type, fn_len) || fn_type != miINT8) |
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395 { |
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396 error ("load: invalid field name subelement"); |
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397 goto data_read_error; |
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398 } |
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399 |
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400 int n_fields = fn_len/field_name_length; |
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401 |
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402 fn_len = PAD (fn_len); |
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403 |
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404 OCTAVE_LOCAL_BUFFER (char, elname, fn_len); |
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405 |
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406 if (! is.read (elname, fn_len)) |
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407 goto data_read_error; |
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408 |
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409 int n; |
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410 if (dims(0) == 1) |
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411 n = dims(1); |
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412 else if (dims(1) == 1) |
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413 n = dims(0); |
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414 else |
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415 { |
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416 error ("load: can only handle one-dimensional structure arrays"); |
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417 goto data_read_error; |
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418 } |
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419 |
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420 Cell field_elts (n_fields, n); |
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421 |
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422 // fields subelements |
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423 for (int j = 0; j < n; j++) |
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424 { |
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425 for (i = 0; i < n_fields; i++) |
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426 { |
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427 octave_value fieldtc; |
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428 read_mat5_binary_element (is, filename, swap, global, fieldtc); |
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429 field_elts(i,j) = fieldtc; |
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430 } |
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431 } |
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432 |
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433 for (int j = n_fields-1; j >= 0; j--) |
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434 { |
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435 const char *key = elname + j*field_name_length; |
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436 |
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4675
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437 Cell c (dim_vector (n, 1)); |
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438 |
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4634
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439 for (int k = n-1; k >=0; k--) |
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4675
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440 c(k) = field_elts(j,k); |
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441 |
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442 m.assign (key, c); |
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4634
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443 } |
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444 |
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445 tc = m; |
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446 } |
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447 break; |
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448 |
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449 case mxCHAR_CLASS: |
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450 // handle as a numerical array to start with |
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451 |
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452 case mxDOUBLE_CLASS: |
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453 case mxSINGLE_CLASS: |
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454 case mxINT8_CLASS: |
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455 case mxUINT8_CLASS: |
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456 case mxINT16_CLASS: |
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457 case mxUINT16_CLASS: |
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458 case mxINT32_CLASS: |
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459 case mxUINT32_CLASS: |
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460 default: |
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461 // handle all these numerical formats as double arrays |
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462 |
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463 // real data subelement |
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464 { |
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465 std::streampos tmp_pos; |
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466 |
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467 if (read_mat5_tag (is, swap, type, len)) |
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468 { |
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469 error ("load: reading matrix data for `%s'", retval.c_str ()); |
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470 goto data_read_error; |
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471 } |
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472 |
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473 int n = re.length (); |
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474 tmp_pos = is.tellg (); |
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475 read_mat5_binary_data (is, re.fortran_vec (), n, swap, |
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476 (enum mat5_data_type) type, flt_fmt); |
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477 |
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478 if (! is || error_state) |
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479 { |
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480 error ("load: reading matrix data for `%s'", retval.c_str ()); |
|
|
481 goto data_read_error; |
|
|
482 } |
|
|
483 |
|
|
484 is.seekg (tmp_pos + static_cast<std::streamoff> (PAD (len))); |
|
|
485 } |
|
|
486 |
|
|
487 // imaginary data subelement |
|
|
488 if (imag) |
|
|
489 { |
|
|
490 NDArray im (dims); |
|
|
491 |
|
|
492 if (read_mat5_tag (is, swap, type, len)) |
|
|
493 { |
|
|
494 error ("load: reading matrix data for `%s'", retval.c_str ()); |
|
|
495 goto data_read_error; |
|
|
496 } |
|
|
497 |
|
|
498 int n = im.length (); |
|
|
499 read_mat5_binary_data (is, im.fortran_vec (), n, swap, |
|
|
500 (enum mat5_data_type) type, flt_fmt); |
|
|
501 |
|
|
502 if (! is || error_state) |
|
|
503 { |
|
|
504 error ("load: reading imaginary matrix data for `%s'", |
|
|
505 retval.c_str ()); |
|
|
506 goto data_read_error; |
|
|
507 } |
|
|
508 |
|
|
509 ComplexNDArray ctmp (dims); |
|
|
510 |
|
|
511 for (int i = 0; i < n; i++) |
|
|
512 ctmp(i) = Complex (re(i), im(i)); |
|
|
513 |
|
|
514 tc = ctmp; |
|
|
515 } |
|
|
516 else |
|
|
517 tc = re; |
|
|
518 |
|
|
519 if (arrayclass == mxCHAR_CLASS) |
|
4741
|
520 tc = tc.convert_to_str (false, true); |
|
4634
|
521 } |
|
|
522 |
|
|
523 is.seekg (pos + static_cast<std::streamoff> (element_length)); |
|
|
524 |
|
|
525 if (is.eof ()) |
|
|
526 is.clear (); |
|
|
527 |
|
|
528 return retval; |
|
|
529 |
|
|
530 data_read_error: |
|
|
531 early_read_error: |
|
|
532 error ("load: trouble reading binary file `%s'", filename.c_str ()); |
|
|
533 return std::string (); |
|
|
534 |
|
|
535 skip_ahead: |
|
|
536 warning ("skipping over `%s'", retval.c_str ()); |
|
|
537 is.seekg (pos + static_cast<std::streamoff> (element_length)); |
|
|
538 return read_mat5_binary_element (is, filename, swap, global, tc); |
|
|
539 } |
|
|
540 |
|
|
541 int |
|
|
542 read_mat5_binary_file_header (std::istream& is, bool& swap, bool quiet) |
|
|
543 { |
|
|
544 TWO_BYTE_INT version=0, magic=0; |
|
|
545 |
|
|
546 is.seekg (124, std::ios::beg); |
|
|
547 is.read (X_CAST (char *, &version), 2); |
|
|
548 is.read (X_CAST (char *, &magic), 2); |
|
|
549 |
|
|
550 if (magic == 0x4d49) |
|
|
551 swap = 0; |
|
|
552 else if (magic == 0x494d) |
|
|
553 swap = 1; |
|
|
554 else |
|
|
555 { |
|
|
556 if (! quiet) |
|
|
557 error ("load: can't read binary file"); |
|
|
558 return -1; |
|
|
559 } |
|
|
560 |
|
|
561 if (! swap) // version number is inverse swapped! |
|
|
562 version = ((version >> 8) & 0xff) + ((version & 0xff) << 8); |
|
|
563 |
|
|
564 if (version != 1 && !quiet) |
|
|
565 warning ("load: found version %d binary MAT file, " |
|
|
566 "but only prepared for version 1", version); |
|
|
567 |
|
|
568 return 0; |
|
|
569 } |
|
|
570 |
|
|
571 static int |
|
|
572 write_mat5_tag (std::ostream& is, int type, int bytes) |
|
|
573 { |
|
|
574 FOUR_BYTE_INT temp; |
|
|
575 |
|
|
576 if (bytes <= 4) |
|
|
577 temp = (bytes << 16) + type; |
|
|
578 else |
|
|
579 { |
|
|
580 temp = type; |
|
|
581 if (! is.write ((char *)&temp, 4)) |
|
|
582 goto data_write_error; |
|
|
583 temp = bytes; |
|
|
584 } |
|
|
585 |
|
|
586 if (! is.write ((char *)&temp, 4)) |
|
|
587 goto data_write_error; |
|
|
588 |
|
|
589 return 0; |
|
|
590 |
|
|
591 data_write_error: |
|
|
592 return 1; |
|
|
593 } |
|
|
594 |
|
|
595 // write out the numeric values in M to OS, |
|
|
596 // preceded by the appropriate tag. |
|
|
597 static void |
|
|
598 write_mat5_array (std::ostream& os, const NDArray& m, bool save_as_floats) |
|
|
599 { |
|
|
600 int nel = m.nelem (); |
|
|
601 double max_val, min_val; |
|
|
602 save_type st = LS_DOUBLE; |
|
|
603 mat5_data_type mst; |
|
|
604 int size; |
|
|
605 unsigned len; |
|
|
606 const double *data = m.data (); |
|
|
607 |
|
|
608 // Have to use copy here to avoid writing over data accessed via |
|
|
609 // Matrix::data(). |
|
|
610 |
|
|
611 #define MAT5_DO_WRITE(TYPE, data, count, stream) \ |
|
|
612 do \ |
|
|
613 { \ |
|
|
614 OCTAVE_LOCAL_BUFFER (TYPE, ptr, count); \ |
|
|
615 for (int i = 0; i < count; i++) \ |
|
|
616 ptr[i] = X_CAST (TYPE, data[i]); \ |
|
|
617 stream.write (X_CAST (char *, ptr), count * sizeof (TYPE)); \ |
|
|
618 } \ |
|
|
619 while (0) |
|
|
620 |
|
|
621 if (save_as_floats) |
|
|
622 { |
|
|
623 if (m.too_large_for_float ()) |
|
|
624 { |
|
|
625 warning ("save: some values too large to save as floats --"); |
|
|
626 warning ("save: saving as doubles instead"); |
|
|
627 } |
|
|
628 else |
|
|
629 st = LS_FLOAT; |
|
|
630 } |
|
|
631 |
|
|
632 if (m.all_integers (max_val, min_val)) |
|
|
633 st = get_save_type (max_val, min_val); |
|
|
634 |
|
|
635 switch (st) |
|
|
636 { |
|
|
637 default: |
|
|
638 case LS_DOUBLE: mst = miDOUBLE; size = 8; break; |
|
|
639 case LS_FLOAT: mst = miSINGLE; size = 4; break; |
|
|
640 case LS_U_CHAR: mst = miUINT8; size = 1; break; |
|
|
641 case LS_U_SHORT: mst = miUINT16; size = 2; break; |
|
|
642 case LS_U_INT: mst = miUINT32; size = 4; break; |
|
|
643 case LS_CHAR: mst = miINT8; size = 1; break; |
|
|
644 case LS_SHORT: mst = miINT16; size = 2; break; |
|
|
645 case LS_INT: mst = miINT32; size = 4; break; |
|
|
646 } |
|
|
647 |
|
|
648 len = nel*size; |
|
|
649 write_mat5_tag (os, mst, len); |
|
|
650 |
|
|
651 { |
|
|
652 switch (st) |
|
|
653 { |
|
|
654 case LS_U_CHAR: |
|
|
655 MAT5_DO_WRITE (unsigned char, data, nel, os); |
|
|
656 break; |
|
|
657 |
|
|
658 case LS_U_SHORT: |
|
|
659 MAT5_DO_WRITE (unsigned TWO_BYTE_INT, data, nel, os); |
|
|
660 break; |
|
|
661 |
|
|
662 case LS_U_INT: |
|
|
663 MAT5_DO_WRITE (unsigned FOUR_BYTE_INT, data, nel, os); |
|
|
664 break; |
|
|
665 |
|
|
666 // provide for 64 bit ints, even though get_save_type does |
|
|
667 // not yet implement them |
|
|
668 #ifdef EIGHT_BYTE_INT |
|
|
669 case LS_U_LONG: |
|
|
670 MAT5_DO_WRITE (unsigned EIGHT_BYTE_INT, data, nel, os); |
|
|
671 break; |
|
|
672 #endif |
|
|
673 |
|
|
674 case LS_CHAR: |
|
|
675 MAT5_DO_WRITE (signed char, data, nel, os); |
|
|
676 break; |
|
|
677 |
|
|
678 case LS_SHORT: |
|
|
679 MAT5_DO_WRITE (TWO_BYTE_INT, data, nel, os); |
|
|
680 break; |
|
|
681 |
|
|
682 case LS_INT: |
|
|
683 MAT5_DO_WRITE (FOUR_BYTE_INT, data, nel, os); |
|
|
684 break; |
|
|
685 |
|
|
686 #ifdef EIGHT_BYTE_INT |
|
|
687 case LS_LONG: |
|
|
688 MAT5_DO_WRITE (EIGHT_BYTE_INT, data, nel, os); |
|
|
689 break; |
|
|
690 #endif |
|
|
691 |
|
|
692 case LS_FLOAT: |
|
|
693 MAT5_DO_WRITE (float, data, nel, os); |
|
|
694 break; |
|
|
695 |
|
|
696 case LS_DOUBLE: // No conversion necessary. |
|
|
697 os.write (X_CAST (char *, data), len); |
|
|
698 break; |
|
|
699 |
|
|
700 default: |
|
|
701 (*current_liboctave_error_handler) |
|
|
702 ("unrecognized data format requested"); |
|
|
703 break; |
|
|
704 } |
|
|
705 } |
|
|
706 if (PAD (len) > len) |
|
|
707 { |
|
|
708 static char buf[9]="\x00\x00\x00\x00\x00\x00\x00\x00"; |
|
|
709 os.write (buf, PAD (len) - len); |
|
|
710 } |
|
|
711 } |
|
|
712 |
|
|
713 // Write out cell element values in the cell array to OS, preceded by |
|
|
714 // the appropriate tag. |
|
|
715 |
|
|
716 static bool |
|
4701
|
717 write_mat5_cell_array (std::ostream& os, const Cell& cell, |
|
|
718 bool mark_as_global, bool save_as_floats) |
|
4634
|
719 { |
|
|
720 int nel = cell.nelem (); |
|
|
721 |
|
|
722 for (int i = 0; i < nel; i++) |
|
|
723 { |
|
|
724 octave_value ov = cell(i); |
|
|
725 |
|
|
726 if (! save_mat5_binary_element (os, ov, "", mark_as_global, |
|
|
727 save_as_floats)) |
|
|
728 return false; |
|
|
729 } |
|
|
730 |
|
|
731 return true; |
|
|
732 } |
|
|
733 |
|
|
734 // save the data from TC along with the corresponding NAME on stream |
|
|
735 // OS in the MatLab version 5 binary format. Return true on success. |
|
|
736 |
|
|
737 bool |
|
|
738 save_mat5_binary_element (std::ostream& os, |
|
|
739 const octave_value& tc, const std::string& name, |
|
|
740 bool mark_as_global, bool save_as_floats) |
|
|
741 { |
|
|
742 FOUR_BYTE_INT flags=0; |
|
|
743 FOUR_BYTE_INT junk=0; |
|
|
744 std::streampos fixup, contin; |
|
|
745 |
|
|
746 // element type and length |
|
|
747 fixup = os.tellp (); |
|
|
748 write_mat5_tag (os, miMATRIX, 99); // we don't know the real length yet |
|
|
749 |
|
|
750 // array flags subelement |
|
|
751 write_mat5_tag (os, miUINT32, 8); |
|
|
752 |
|
|
753 if (mark_as_global) |
|
|
754 flags |= 0x0400; |
|
|
755 |
|
|
756 if (tc.is_complex_scalar () || tc.is_complex_matrix ()) |
|
|
757 flags |= 0x0800; |
|
|
758 |
|
|
759 if (tc.is_string ()) |
|
|
760 flags |= mxCHAR_CLASS; |
|
|
761 else if (tc.is_real_scalar ()) |
|
|
762 flags |= mxDOUBLE_CLASS; |
|
|
763 else if (tc.is_real_matrix () || tc.is_range ()) |
|
|
764 flags |= mxDOUBLE_CLASS; |
|
|
765 else if (tc.is_complex_scalar ()) |
|
|
766 flags |= mxDOUBLE_CLASS; |
|
|
767 else if (tc.is_complex_matrix ()) |
|
|
768 flags |= mxDOUBLE_CLASS; |
|
|
769 else if (tc.is_map ()) |
|
|
770 flags |= mxSTRUCT_CLASS; |
|
|
771 else if (tc.is_cell ()) |
|
|
772 flags |= mxCELL_CLASS; |
|
|
773 else |
|
|
774 { |
|
|
775 gripe_wrong_type_arg ("save", tc, false); |
|
|
776 goto error_cleanup; |
|
|
777 } |
|
|
778 |
|
|
779 os.write ((char *)&flags, 4); |
|
|
780 os.write ((char *)&junk, 4); |
|
|
781 |
|
|
782 { |
|
|
783 dim_vector dv = tc.dims (); |
|
|
784 int nd = tc.ndims (); |
|
4638
|
785 int dim_len = 4*nd; |
|
4634
|
786 |
|
4638
|
787 write_mat5_tag (os, miINT32, dim_len); |
|
4634
|
788 |
|
|
789 for (int i = 0; i < nd; i++) |
|
|
790 { |
|
4638
|
791 FOUR_BYTE_INT n = dv(i); |
|
4634
|
792 os.write ((char *)&n, 4); |
|
|
793 } |
|
4638
|
794 |
|
|
795 if (PAD (dim_len) > dim_len) |
|
|
796 { |
|
|
797 static char buf[9]="\x00\x00\x00\x00\x00\x00\x00\x00"; |
|
|
798 os.write (buf, PAD (dim_len) - dim_len); |
|
|
799 } |
|
4634
|
800 } |
|
|
801 |
|
|
802 // array name subelement |
|
|
803 { |
|
|
804 int namelen = name.length (); |
|
|
805 |
|
|
806 if (namelen > 31) |
|
|
807 namelen = 31; // only 31 char names permitted in mat file |
|
|
808 |
|
|
809 int paddedlength = PAD (namelen); |
|
|
810 |
|
|
811 write_mat5_tag (os, miINT8, namelen); |
|
|
812 OCTAVE_LOCAL_BUFFER (char, paddedname, paddedlength); |
|
|
813 memset (paddedname, 0, paddedlength); |
|
|
814 strncpy (paddedname, name.c_str (), namelen); |
|
|
815 os.write (paddedname, paddedlength); |
|
|
816 } |
|
|
817 |
|
|
818 // data element |
|
|
819 if (tc.is_string ()) |
|
|
820 { |
|
|
821 charMatrix chm = tc.char_matrix_value (); |
|
|
822 int nr = chm.rows (); |
|
|
823 int nc = chm.cols (); |
|
|
824 int len = nr*nc*2; |
|
|
825 int paddedlength = PAD (nr*nc*2); |
|
|
826 |
|
|
827 OCTAVE_LOCAL_BUFFER (TWO_BYTE_INT, buf, nc*nr+3); |
|
|
828 write_mat5_tag (os, miUINT16, len); |
|
|
829 |
|
|
830 for (int i = 0; i < nr; i++) |
|
|
831 { |
|
|
832 std::string tstr = chm.row_as_string (i); |
|
|
833 const char *s = tstr.data (); |
|
|
834 |
|
|
835 for (int j = 0; j < nc; j++) |
|
|
836 buf[j*nr+i] = *s++ & 0x00FF; |
|
|
837 } |
|
|
838 os.write ((char *)buf, nr*nc*2); |
|
|
839 |
|
|
840 if (paddedlength > len) |
|
|
841 os.write ((char *)buf, paddedlength - len); |
|
|
842 } |
|
|
843 else if (tc.is_real_scalar () || tc.is_real_matrix () || tc.is_range ()) |
|
|
844 { |
|
|
845 NDArray m = tc.array_value (); |
|
|
846 |
|
|
847 write_mat5_array (os, m, save_as_floats); |
|
|
848 } |
|
|
849 else if (tc.is_cell ()) |
|
|
850 { |
|
|
851 Cell cell = tc.cell_value (); |
|
|
852 |
|
|
853 if (! write_mat5_cell_array (os, cell, mark_as_global, save_as_floats)) |
|
|
854 goto error_cleanup; |
|
|
855 } |
|
|
856 else if (tc.is_complex_scalar () || tc.is_complex_matrix ()) |
|
|
857 { |
|
|
858 ComplexNDArray m_cmplx = tc.complex_matrix_value (); |
|
|
859 |
|
|
860 write_mat5_array (os, ::real (m_cmplx), save_as_floats); |
|
|
861 write_mat5_array (os, ::imag (m_cmplx), save_as_floats); |
|
|
862 } |
|
|
863 else if (tc.is_map ()) |
|
|
864 { |
|
|
865 // an Octave structure */ |
|
|
866 // recursively write each element of the structure |
|
4675
|
867 const Octave_map m = tc.map_value (); |
|
4634
|
868 |
|
|
869 { |
|
|
870 char buf[32]; |
|
|
871 FOUR_BYTE_INT maxfieldnamelength = 32; |
|
|
872 int fieldcnt = 0; |
|
|
873 |
|
4675
|
874 for (Octave_map::const_iterator i = m.begin (); i != m.end (); i++) |
|
4634
|
875 fieldcnt++; |
|
|
876 |
|
|
877 write_mat5_tag (os, miINT32, 4); |
|
|
878 os.write ((char *)&maxfieldnamelength, 4); |
|
|
879 write_mat5_tag (os, miINT8, fieldcnt*32); |
|
|
880 |
|
4675
|
881 for (Octave_map::const_iterator i = m.begin (); i != m.end (); i++) |
|
4634
|
882 { |
|
|
883 // write the name of each element |
|
|
884 std::string tstr = m.key (i); |
|
|
885 memset (buf, 0, 32); |
|
|
886 strncpy (buf, tstr.c_str (), 31); // only 31 char names permitted |
|
|
887 os.write (buf, 32); |
|
|
888 } |
|
|
889 |
|
|
890 int len = m.numel (); |
|
|
891 |
|
5058
|
892 for (int j = 0; j < len; j++) |
|
4634
|
893 { |
|
|
894 // write the data of each element |
|
|
895 |
|
5058
|
896 for (Octave_map::const_iterator i = m.begin (); i != m.end (); i++) |
|
4634
|
897 { |
|
5058
|
898 Cell elts = m.contents (i); |
|
|
899 |
|
4634
|
900 bool retval2 = save_mat5_binary_element (os, elts(j), "", |
|
|
901 mark_as_global, |
|
|
902 save_as_floats); |
|
|
903 if (! retval2) |
|
|
904 goto error_cleanup; |
|
|
905 } |
|
|
906 } |
|
|
907 } |
|
|
908 } |
|
|
909 else |
|
|
910 gripe_wrong_type_arg ("save", tc, false); |
|
|
911 |
|
|
912 contin = os.tellp (); |
|
|
913 os.seekp (fixup); |
|
|
914 write_mat5_tag (os, miMATRIX, |
|
|
915 static_cast<int>(contin - fixup) - 8); // the actual length |
|
|
916 os.seekp (contin); |
|
|
917 |
|
|
918 return true; |
|
|
919 |
|
|
920 error_cleanup: |
|
|
921 error ("save: error while writing `%s' to MAT file", name.c_str ()); |
|
|
922 |
|
|
923 return false; |
|
|
924 } |
|
|
925 |
|
|
926 /* |
|
|
927 ;;; Local Variables: *** |
|
|
928 ;;; mode: C++ *** |
|
|
929 ;;; End: *** |
|
|
930 */ |
|
|
931 |
