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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: John W. Eaton. |
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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 <memory> |
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37 #include <string> |
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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-oct-ascii.h" |
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70 |
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71 // The number of decimal digits to use when writing ascii data. |
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72 static int Vsave_precision; |
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73 |
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74 #define CELL_ELT_TAG "<cell-element>" |
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75 |
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76 // Used when converting Inf to something that gnuplot can read. |
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77 |
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78 #ifndef OCT_RBV |
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79 #define OCT_RBV DBL_MAX / 100.0 |
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80 #endif |
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81 |
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82 // Functions for reading ascii data. |
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83 |
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84 static void |
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85 ascii_save_type (std::ostream& os, const char *type, bool mark_as_global) |
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86 { |
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87 if (mark_as_global) |
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88 os << "# type: global "; |
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89 else |
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90 os << "# type: "; |
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91 |
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92 os << type << "\n"; |
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93 } |
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94 |
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95 static Matrix |
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96 strip_infnan (const Matrix& m) |
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97 { |
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98 int nr = m.rows (); |
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99 int nc = m.columns (); |
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100 |
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101 Matrix retval (nr, nc); |
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102 |
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103 int k = 0; |
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104 for (int i = 0; i < nr; i++) |
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105 { |
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106 for (int j = 0; j < nc; j++) |
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107 { |
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108 double d = m (i, j); |
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109 if (xisnan (d)) |
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110 goto next_row; |
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111 else |
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112 retval (k, j) = xisinf (d) ? (d > 0 ? OCT_RBV : -OCT_RBV) : d; |
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113 } |
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114 k++; |
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115 |
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116 next_row: |
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117 continue; |
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118 } |
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119 |
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120 if (k > 0) |
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121 retval.resize (k, nc); |
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122 |
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123 return retval; |
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124 } |
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125 |
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126 static ComplexMatrix |
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127 strip_infnan (const ComplexMatrix& m) |
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128 { |
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129 int nr = m.rows (); |
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130 int nc = m.columns (); |
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131 |
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132 ComplexMatrix retval (nr, nc); |
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133 |
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134 int k = 0; |
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135 for (int i = 0; i < nr; i++) |
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136 { |
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137 for (int j = 0; j < nc; j++) |
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138 { |
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139 Complex c = m (i, j); |
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140 if (xisnan (c)) |
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141 goto next_row; |
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142 else |
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143 { |
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144 double re = real (c); |
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145 double im = imag (c); |
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146 |
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147 re = xisinf (re) ? (re > 0 ? OCT_RBV : -OCT_RBV) : re; |
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148 im = xisinf (im) ? (im > 0 ? OCT_RBV : -OCT_RBV) : im; |
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149 |
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150 retval (k, j) = Complex (re, im); |
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151 } |
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152 } |
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153 k++; |
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154 |
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155 next_row: |
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156 continue; |
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157 } |
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158 |
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159 if (k > 0) |
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160 retval.resize (k, nc); |
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161 |
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162 return retval; |
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163 } |
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164 |
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165 // Skip white space and comments on stream IS. |
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166 |
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167 static void |
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168 skip_comments (std::istream& is) |
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169 { |
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170 char c = '\0'; |
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171 while (is.get (c)) |
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172 { |
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173 if (c == ' ' || c == '\t' || c == '\n') |
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174 ; // Skip whitespace on way to beginning of next line. |
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175 else |
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176 break; |
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177 } |
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178 |
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179 for (;;) |
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180 { |
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181 if (is && (c == '%' || c == '#')) |
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182 while (is.get (c) && c != '\n') |
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183 ; // Skip to beginning of next line, ignoring everything. |
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184 else |
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185 break; |
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186 } |
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187 } |
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188 |
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189 // Extract a KEYWORD and its value from stream IS, returning the |
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190 // associated value in a new string. |
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191 // |
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192 // Input should look something like: |
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193 // |
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194 // [%#][ \t]*keyword[ \t]*:[ \t]*string-value[ \t]*\n |
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195 |
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196 std::string |
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197 extract_keyword (std::istream& is, const char *keyword) |
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198 { |
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199 std::string retval; |
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200 |
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201 char c; |
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202 while (is.get (c)) |
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203 { |
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204 if (c == '%' || c == '#') |
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205 { |
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206 OSSTREAM buf; |
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207 |
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208 while (is.get (c) && (c == ' ' || c == '\t' || c == '%' || c == '#')) |
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209 ; // Skip whitespace and comment characters. |
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210 |
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211 if (isalpha (c)) |
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212 buf << c; |
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213 |
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214 while (is.get (c) && isalpha (c)) |
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215 buf << c; |
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216 |
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217 buf << OSSTREAM_ENDS; |
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218 const char *tmp = OSSTREAM_C_STR (buf); |
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219 OSSTREAM_FREEZE (buf); |
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220 int match = (strncmp (tmp, keyword, strlen (keyword)) == 0); |
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221 |
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222 if (match) |
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223 { |
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224 OSSTREAM value; |
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225 while (is.get (c) && (c == ' ' || c == '\t' || c == ':')) |
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226 ; // Skip whitespace and the colon. |
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227 |
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228 if (c != '\n') |
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229 { |
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230 value << c; |
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231 while (is.get (c) && c != '\n') |
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232 value << c; |
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233 } |
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234 value << OSSTREAM_ENDS; |
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235 retval = OSSTREAM_STR (value); |
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236 OSSTREAM_FREEZE (value); |
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237 break; |
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238 } |
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239 } |
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240 } |
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241 |
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242 int len = retval.length (); |
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243 |
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244 if (len > 0) |
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245 { |
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246 while (len) |
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247 { |
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248 c = retval[len-1]; |
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249 |
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250 if (c == ' ' || c == '\t') |
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251 len--; |
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252 else |
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253 { |
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254 retval.resize (len); |
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255 break; |
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256 } |
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257 } |
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258 } |
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259 |
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260 return retval; |
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261 } |
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262 |
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263 // Match KEYWORD on stream IS, placing the associated value in VALUE, |
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264 // returning TRUE if successful and FALSE otherwise. |
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265 // |
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266 // Input should look something like: |
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267 // |
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268 // [%#][ \t]*keyword[ \t]*int-value.*\n |
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269 |
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270 static bool |
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271 extract_keyword (std::istream& is, const char *keyword, int& value) |
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272 { |
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273 bool status = false; |
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274 value = 0; |
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275 |
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276 char c; |
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277 while (is.get (c)) |
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278 { |
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279 if (c == '%' || c == '#') |
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280 { |
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281 OSSTREAM buf; |
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282 |
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283 while (is.get (c) && (c == ' ' || c == '\t' || c == '%' || c == '#')) |
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284 ; // Skip whitespace and comment characters. |
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285 |
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286 if (isalpha (c)) |
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287 buf << c; |
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288 |
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289 while (is.get (c) && isalpha (c)) |
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290 buf << c; |
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291 |
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292 buf << OSSTREAM_ENDS; |
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293 const char *tmp = OSSTREAM_C_STR (buf); |
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294 int match = (strncmp (tmp, keyword, strlen (keyword)) == 0); |
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295 OSSTREAM_FREEZE (buf); |
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296 |
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297 if (match) |
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298 { |
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299 while (is.get (c) && (c == ' ' || c == '\t' || c == ':')) |
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300 ; // Skip whitespace and the colon. |
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301 |
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302 is.putback (c); |
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303 if (c != '\n') |
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304 is >> value; |
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305 if (is) |
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306 status = true; |
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307 while (is.get (c) && c != '\n') |
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308 ; // Skip to beginning of next line; |
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309 break; |
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310 } |
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311 } |
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312 } |
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313 return status; |
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314 } |
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315 |
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316 // Extract one value (scalar, matrix, string, etc.) from stream IS and |
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317 // place it in TC, returning the name of the variable. If the value |
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318 // is tagged as global in the file, return TRUE in GLOBAL. |
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319 // |
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320 // FILENAME is used for error messages. |
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321 // |
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322 // The data is expected to be in the following format: |
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323 // |
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324 // The input file must have a header followed by some data. |
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325 // |
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326 // All lines in the header must begin with a `#' character. |
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327 // |
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328 // The header must contain a list of keyword and value pairs with the |
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329 // keyword and value separated by a colon. |
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330 // |
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331 // Keywords must appear in the following order: |
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332 // |
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333 // # name: <name> |
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334 // # type: <type> |
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335 // # <info> |
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336 // |
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337 // Where: |
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338 // |
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339 // <name> : a valid identifier |
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340 // |
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341 // <type> : <typename> |
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342 // | global <typename> |
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343 // |
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344 // <typename> : scalar |
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345 // | complex scalar |
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346 // | matrix |
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347 // | complex matrix |
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348 // | string |
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349 // | range |
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350 // | string array |
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351 // |
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352 // <info> : <matrix info> |
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353 // | <string info> |
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354 // | <string array info> |
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355 // |
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356 // <matrix info> : # rows: <integer> |
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357 // : # columns: <integer> |
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358 // |
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359 // <string info> : # length: <integer> |
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360 // |
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361 // <string array info> : # elements: <integer> |
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362 // : # length: <integer> (once before each string) |
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363 // |
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364 // Formatted ASCII data follows the header. |
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365 // |
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366 // Example: |
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367 // |
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368 // # name: foo |
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369 // # type: matrix |
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370 // # rows: 2 |
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371 // # columns: 2 |
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372 // 2 4 |
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373 // 1 3 |
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374 // |
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375 // Example: |
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376 // |
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377 // # name: foo |
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378 // # type: string array |
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379 // # elements: 5 |
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380 // # length: 4 |
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381 // this |
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382 // # length: 2 |
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383 // is |
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384 // # length: 1 |
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385 // a |
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386 // # length: 6 |
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387 // string |
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388 // # length: 5 |
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389 // array |
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390 // |
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391 // XXX FIXME XXX -- this format is fairly rigid, and doesn't allow for |
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392 // arbitrary comments, etc. Someone should fix that. |
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393 |
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394 // Ugh. The signature of the compare method is not standard in older |
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395 // versions of the GNU libstdc++. Do this instead: |
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396 |
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397 #define SUBSTRING_COMPARE_EQ(s, pos, n, t) (s.substr (pos, n) == t) |
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398 |
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399 std::string |
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400 read_ascii_data (std::istream& is, const std::string& filename, bool& global, |
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401 octave_value& tc, int count) |
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402 { |
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403 // Read name for this entry or break on EOF. |
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404 |
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405 std::string name = extract_keyword (is, "name"); |
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406 |
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407 if (name.empty ()) |
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408 { |
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409 if (count == 0) |
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410 error ("load: empty name keyword or no data found in file `%s'", |
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411 filename.c_str ()); |
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412 |
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413 return std::string (); |
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414 } |
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415 |
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416 if (name == CELL_ELT_TAG) |
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417 { |
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418 // This is OK -- name won't be used. |
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419 } |
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420 else if (! valid_identifier (name)) |
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421 { |
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422 error ("load: bogus identifier `%s' found in file `%s'", |
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423 name.c_str (), filename.c_str ()); |
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424 return std::string (); |
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425 } |
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426 |
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427 // Look for type keyword. |
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428 |
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429 std::string tag = extract_keyword (is, "type"); |
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430 |
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431 if (! tag.empty ()) |
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432 { |
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433 std::string typ; |
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434 size_t pos = tag.rfind (' '); |
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435 |
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436 if (pos != NPOS) |
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437 { |
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438 global = SUBSTRING_COMPARE_EQ (tag, 0, 6, "global"); |
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439 |
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440 typ = global ? tag.substr (7) : tag; |
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441 } |
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442 else |
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443 typ = tag; |
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444 |
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445 if (SUBSTRING_COMPARE_EQ (typ, 0, 6, "scalar")) |
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446 { |
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447 double tmp = octave_read_double (is); |
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448 if (is) |
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449 tc = tmp; |
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450 else |
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451 error ("load: failed to load scalar constant"); |
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452 } |
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453 else if (SUBSTRING_COMPARE_EQ (typ, 0, 6, "matrix")) |
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454 { |
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455 int nr = 0; |
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456 int nc = 0; |
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457 |
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458 if (extract_keyword (is, "rows", nr) && nr >= 0 |
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459 && extract_keyword (is, "columns", nc) && nc >= 0) |
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460 { |
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461 if (nr > 0 && nc > 0) |
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462 { |
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463 Matrix tmp (nr, nc); |
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464 is >> tmp; |
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465 if (is) |
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466 tc = tmp; |
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467 else |
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468 error ("load: failed to load matrix constant"); |
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469 } |
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470 else if (nr == 0 || nc == 0) |
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471 tc = Matrix (nr, nc); |
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472 else |
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473 panic_impossible (); |
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474 } |
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475 else |
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476 error ("load: failed to extract number of rows and columns"); |
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477 } |
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478 else if (SUBSTRING_COMPARE_EQ (typ, 0, 4, "cell")) |
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479 { |
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480 int nr = 0; |
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481 int nc = 0; |
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482 |
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483 if (extract_keyword (is, "rows", nr) && nr >= 0 |
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484 && extract_keyword (is, "columns", nc) && nc >= 0) |
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485 { |
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486 if (nr > 0 && nc > 0) |
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487 { |
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488 Cell tmp (nr, nc); |
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489 |
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490 for (int j = 0; j < nc; j++) |
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491 { |
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492 for (int i = 0; i < nr; i++) |
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493 { |
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494 octave_value t2; |
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495 |
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496 // recurse to read cell elements |
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497 std::string nm |
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498 = read_ascii_data (is, filename, global, t2, count); |
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499 |
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500 if (nm == CELL_ELT_TAG) |
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501 { |
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502 if (is) |
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503 tmp.elem (i, j) = t2; |
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504 } |
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505 else |
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506 { |
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507 error ("load: cell array element had unexpected name"); |
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508 goto cell_read_error; |
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509 } |
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510 } |
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511 } |
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512 |
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513 cell_read_error: |
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514 |
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515 if (is) |
|
|
516 tc = tmp; |
|
|
517 else |
|
|
518 error ("load: failed to load cell element"); |
|
|
519 } |
|
|
520 else if (nr == 0 || nc == 0) |
|
|
521 tc = Cell (nr, nc); |
|
|
522 else |
|
|
523 panic_impossible (); |
|
|
524 } |
|
|
525 else |
|
|
526 error ("load: failed to extract number of rows and columns for cell array"); |
|
|
527 } |
|
|
528 else if (SUBSTRING_COMPARE_EQ (typ, 0, 14, "complex scalar")) |
|
|
529 { |
|
|
530 Complex tmp = octave_read_complex (is); |
|
|
531 if (is) |
|
|
532 tc = tmp; |
|
|
533 else |
|
|
534 error ("load: failed to load complex scalar constant"); |
|
|
535 } |
|
|
536 else if (SUBSTRING_COMPARE_EQ (typ, 0, 14, "complex matrix")) |
|
|
537 { |
|
|
538 int nr = 0; |
|
|
539 int nc = 0; |
|
|
540 |
|
|
541 if (extract_keyword (is, "rows", nr) && nr > 0 |
|
|
542 && extract_keyword (is, "columns", nc) && nc > 0) |
|
|
543 { |
|
|
544 ComplexMatrix tmp (nr, nc); |
|
|
545 is >> tmp; |
|
|
546 if (is) |
|
|
547 tc = tmp; |
|
|
548 else |
|
|
549 error ("load: failed to load complex matrix constant"); |
|
|
550 } |
|
|
551 else |
|
|
552 error ("load: failed to extract number of rows and columns"); |
|
|
553 } |
|
|
554 else if (SUBSTRING_COMPARE_EQ (typ, 0, 12, "string array")) |
|
|
555 { |
|
|
556 int elements; |
|
|
557 if (extract_keyword (is, "elements", elements) && elements >= 0) |
|
|
558 { |
|
|
559 // XXX FIXME XXX -- need to be able to get max length |
|
|
560 // before doing anything. |
|
|
561 |
|
|
562 charMatrix chm (elements, 0); |
|
|
563 int max_len = 0; |
|
|
564 for (int i = 0; i < elements; i++) |
|
|
565 { |
|
|
566 int len; |
|
|
567 if (extract_keyword (is, "length", len) && len >= 0) |
|
|
568 { |
|
|
569 OCTAVE_LOCAL_BUFFER (char, tmp, len+1); |
|
|
570 |
|
|
571 if (len > 0 && ! is.read (X_CAST (char *, tmp), len)) |
|
|
572 { |
|
|
573 error ("load: failed to load string constant"); |
|
|
574 break; |
|
|
575 } |
|
|
576 else |
|
|
577 { |
|
|
578 tmp [len] = '\0'; |
|
|
579 if (len > max_len) |
|
|
580 { |
|
|
581 max_len = len; |
|
|
582 chm.resize (elements, max_len, 0); |
|
|
583 } |
|
|
584 chm.insert (tmp, i, 0); |
|
|
585 } |
|
|
586 } |
|
|
587 else |
|
|
588 error ("load: failed to extract string length for element %d", i+1); |
|
|
589 } |
|
|
590 |
|
|
591 if (! error_state) |
|
|
592 tc = octave_value (chm, true); |
|
|
593 } |
|
|
594 else |
|
|
595 error ("load: failed to extract number of string elements"); |
|
|
596 } |
|
|
597 else if (SUBSTRING_COMPARE_EQ (typ, 0, 6, "string")) |
|
|
598 { |
|
|
599 int len; |
|
|
600 if (extract_keyword (is, "length", len) && len >= 0) |
|
|
601 { |
|
|
602 OCTAVE_LOCAL_BUFFER (char, tmp, len+1); |
|
|
603 |
|
|
604 if (len > 0 && ! is.read (X_CAST (char *, tmp), len)) |
|
|
605 { |
|
|
606 error ("load: failed to load string constant"); |
|
|
607 } |
|
|
608 else |
|
|
609 { |
|
|
610 tmp [len] = '\0'; |
|
|
611 |
|
|
612 if (is) |
|
|
613 tc = tmp; |
|
|
614 else |
|
|
615 error ("load: failed to load string constant"); |
|
|
616 } |
|
|
617 } |
|
|
618 else |
|
|
619 error ("load: failed to extract string length"); |
|
|
620 } |
|
|
621 else if (SUBSTRING_COMPARE_EQ (typ, 0, 5, "range")) |
|
|
622 { |
|
|
623 // # base, limit, range comment added by save (). |
|
|
624 |
|
|
625 skip_comments (is); |
|
|
626 Range tmp; |
|
|
627 is >> tmp; |
|
|
628 if (is) |
|
|
629 tc = tmp; |
|
|
630 else |
|
|
631 error ("load: failed to load range constant"); |
|
|
632 } |
|
|
633 else |
|
|
634 error ("load: unknown constant type `%s'", tag.c_str ()); |
|
|
635 } |
|
|
636 else |
|
|
637 error ("load: failed to extract keyword specifying value type"); |
|
|
638 |
|
|
639 if (error_state) |
|
|
640 { |
|
|
641 error ("load: reading file %s", filename.c_str ()); |
|
|
642 return std::string (); |
|
|
643 } |
|
|
644 |
|
|
645 return name; |
|
|
646 } |
|
|
647 |
|
|
648 // Save the data from TC along with the corresponding NAME, and global |
|
|
649 // flag MARK_AS_GLOBAL on stream OS in the plain text format described |
|
|
650 // above for load_ascii_data. If NAME is empty, the name: line is not |
|
|
651 // generated. PRECISION specifies the number of decimal digits to print. |
|
|
652 // If STRIP_NAN_AND_INF is TRUE, rows containing NaNs are deleted, |
|
|
653 // and Infinite values are converted to +/-OCT_RBV (A Real Big Value, |
|
|
654 // but not so big that gnuplot can't handle it when trying to compute |
|
|
655 // axis ranges, etc.). |
|
|
656 // |
|
|
657 // Assumes ranges and strings cannot contain Inf or NaN values. |
|
|
658 // |
|
|
659 // Returns 1 for success and 0 for failure. |
|
|
660 |
|
|
661 // XXX FIXME XXX -- should probably write the help string here too. |
|
|
662 |
|
|
663 bool |
|
|
664 save_ascii_data (std::ostream& os, const octave_value& val_arg, |
|
|
665 const std::string& name, bool& infnan_warned, |
|
|
666 bool strip_nan_and_inf, bool mark_as_global, |
|
|
667 int precision) |
|
|
668 { |
|
|
669 bool success = true; |
|
|
670 |
|
|
671 if (! precision) |
|
|
672 precision = Vsave_precision; |
|
|
673 |
|
|
674 if (! name.empty ()) |
|
|
675 os << "# name: " << name << "\n"; |
|
|
676 |
|
|
677 long old_precision = os.precision (); |
|
|
678 os.precision (precision); |
|
|
679 |
|
|
680 octave_value val = val_arg; |
|
|
681 |
|
|
682 if (val.is_range ()) |
|
|
683 { |
|
|
684 Range r = val.range_value (); |
|
|
685 double base = r.base (); |
|
|
686 double limit = r.limit (); |
|
|
687 double inc = r.inc (); |
|
|
688 if (! (NINT (base) == base |
|
|
689 && NINT (limit) == limit |
|
|
690 && NINT (inc) == inc)) |
|
|
691 val = val.matrix_value (); |
|
|
692 } |
|
|
693 |
|
|
694 if (val.is_string ()) |
|
|
695 { |
|
|
696 ascii_save_type (os, "string array", mark_as_global); |
|
|
697 charMatrix chm = val.char_matrix_value (); |
|
|
698 int elements = chm.rows (); |
|
|
699 os << "# elements: " << elements << "\n"; |
|
|
700 for (int i = 0; i < elements; i++) |
|
|
701 { |
|
|
702 unsigned len = chm.cols (); |
|
|
703 os << "# length: " << len << "\n"; |
|
|
704 std::string tstr = chm.row_as_string (i, false, true); |
|
|
705 const char *tmp = tstr.data (); |
|
|
706 if (tstr.length () > len) |
|
|
707 panic_impossible (); |
|
|
708 os.write (X_CAST (char *, tmp), len); |
|
|
709 os << "\n"; |
|
|
710 } |
|
|
711 } |
|
|
712 else if (val.is_range ()) |
|
|
713 { |
|
|
714 ascii_save_type (os, "range", mark_as_global); |
|
|
715 Range tmp = val.range_value (); |
|
|
716 os << "# base, limit, increment\n"; |
|
|
717 octave_write_double (os, tmp.base ()); |
|
|
718 os << " "; |
|
|
719 octave_write_double (os, tmp.limit ()); |
|
|
720 os << " "; |
|
|
721 octave_write_double (os, tmp.inc ()); |
|
|
722 os << "\n"; |
|
|
723 } |
|
|
724 else if (val.is_real_scalar ()) |
|
|
725 { |
|
|
726 ascii_save_type (os, "scalar", mark_as_global); |
|
|
727 |
|
|
728 double d = val.double_value (); |
|
|
729 |
|
|
730 if (strip_nan_and_inf) |
|
|
731 { |
|
|
732 if (xisnan (d)) |
|
|
733 { |
|
|
734 error ("only value to plot is NaN"); |
|
|
735 success = false; |
|
|
736 } |
|
|
737 else |
|
|
738 { |
|
|
739 d = xisinf (d) ? (d > 0 ? OCT_RBV : -OCT_RBV) : d; |
|
|
740 octave_write_double (os, d); |
|
|
741 os << "\n"; |
|
|
742 } |
|
|
743 } |
|
|
744 else |
|
|
745 { |
|
|
746 if (! infnan_warned && (xisnan (d) || xisinf (d))) |
|
|
747 { |
|
|
748 warning ("save: Inf or NaN values may not be reloadable"); |
|
|
749 infnan_warned = true; |
|
|
750 } |
|
|
751 |
|
|
752 octave_write_double (os, d); |
|
|
753 os << "\n"; |
|
|
754 } |
|
|
755 } |
|
|
756 else if (val.is_real_matrix ()) |
|
|
757 { |
|
|
758 ascii_save_type (os, "matrix", mark_as_global); |
|
|
759 |
|
|
760 os << "# rows: " << val.rows () << "\n" |
|
|
761 << "# columns: " << val.columns () << "\n"; |
|
|
762 |
|
|
763 Matrix tmp = val.matrix_value (); |
|
|
764 |
|
|
765 if (strip_nan_and_inf) |
|
|
766 tmp = strip_infnan (tmp); |
|
|
767 else if (! infnan_warned && tmp.any_element_is_inf_or_nan ()) |
|
|
768 { |
|
|
769 warning ("save: Inf or NaN values may not be reloadable"); |
|
|
770 infnan_warned = true; |
|
|
771 } |
|
|
772 |
|
|
773 os << tmp; |
|
|
774 } |
|
|
775 else if (val.is_cell ()) |
|
|
776 { |
|
|
777 ascii_save_type (os, "cell", mark_as_global); |
|
|
778 |
|
|
779 os << "# rows: " << val.rows () << "\n" |
|
|
780 << "# columns: " << val.columns () << "\n"; |
|
|
781 |
|
|
782 Cell tmp = val.cell_value (); |
|
|
783 |
|
|
784 for (int j = 0; j < tmp.cols (); j++) |
|
|
785 { |
|
|
786 for (int i = 0; i < tmp.rows (); i++) |
|
|
787 { |
|
|
788 octave_value o_val = tmp.elem (i, j); |
|
|
789 |
|
|
790 // Recurse to print sub-value. |
|
|
791 bool b = save_ascii_data (os, o_val, CELL_ELT_TAG, |
|
|
792 infnan_warned, strip_nan_and_inf, |
|
|
793 mark_as_global, 0); |
|
|
794 |
|
|
795 if (! b) |
|
|
796 return os; |
|
|
797 } |
|
|
798 |
|
|
799 os << "\n"; |
|
|
800 } |
|
|
801 } |
|
|
802 else if (val.is_complex_scalar ()) |
|
|
803 { |
|
|
804 ascii_save_type (os, "complex scalar", mark_as_global); |
|
|
805 |
|
|
806 Complex c = val.complex_value (); |
|
|
807 |
|
|
808 if (strip_nan_and_inf) |
|
|
809 { |
|
|
810 if (xisnan (c)) |
|
|
811 { |
|
|
812 error ("only value to plot is NaN"); |
|
|
813 success = false; |
|
|
814 } |
|
|
815 else |
|
|
816 { |
|
|
817 double re = real (c); |
|
|
818 double im = imag (c); |
|
|
819 |
|
|
820 re = xisinf (re) ? (re > 0 ? OCT_RBV : -OCT_RBV) : re; |
|
|
821 im = xisinf (im) ? (im > 0 ? OCT_RBV : -OCT_RBV) : im; |
|
|
822 |
|
|
823 c = Complex (re, im); |
|
|
824 |
|
|
825 octave_write_complex (os, c); |
|
|
826 os << "\n"; |
|
|
827 } |
|
|
828 } |
|
|
829 else |
|
|
830 { |
|
|
831 if (! infnan_warned && (xisnan (c) || xisinf (c))) |
|
|
832 { |
|
|
833 warning ("save: Inf or NaN values may not be reloadable"); |
|
|
834 infnan_warned = true; |
|
|
835 } |
|
|
836 |
|
|
837 octave_write_complex (os, c); |
|
|
838 os << "\n"; |
|
|
839 } |
|
|
840 } |
|
|
841 else if (val.is_complex_matrix ()) |
|
|
842 { |
|
|
843 ascii_save_type (os, "complex matrix", mark_as_global); |
|
|
844 |
|
|
845 os << "# rows: " << val.rows () << "\n" |
|
|
846 << "# columns: " << val.columns () << "\n"; |
|
|
847 |
|
|
848 ComplexMatrix tmp = val.complex_matrix_value (); |
|
|
849 |
|
|
850 if (strip_nan_and_inf) |
|
|
851 tmp = strip_infnan (tmp); |
|
|
852 else if (! infnan_warned && tmp.any_element_is_inf_or_nan ()) |
|
|
853 { |
|
|
854 warning ("save: Inf or NaN values may not be reloadable"); |
|
|
855 infnan_warned = true; |
|
|
856 } |
|
|
857 |
|
|
858 os << tmp; |
|
|
859 } |
|
|
860 else |
|
|
861 gripe_wrong_type_arg ("save", val, false); |
|
|
862 |
|
|
863 os.precision (old_precision); |
|
|
864 |
|
|
865 return (os && success); |
|
|
866 } |
|
|
867 |
|
|
868 bool |
|
|
869 save_ascii_data_for_plotting (std::ostream& os, const octave_value& t, |
|
|
870 const std::string& name) |
|
|
871 { |
|
|
872 bool infnan_warned = true; |
|
|
873 |
|
|
874 return save_ascii_data (os, t, name, infnan_warned, true, false, 0); |
|
|
875 } |
|
|
876 |
|
|
877 // Maybe this should be a static function in tree-plot.cc? |
|
|
878 |
|
|
879 // If TC is matrix, save it on stream OS in a format useful for |
|
|
880 // making a 3-dimensional plot with gnuplot. If PARAMETRIC is |
|
|
881 // TRUE, assume a parametric 3-dimensional plot will be generated. |
|
|
882 |
|
|
883 bool |
|
|
884 save_three_d (std::ostream& os, const octave_value& tc, bool parametric) |
|
|
885 { |
|
|
886 bool fail = false; |
|
|
887 |
|
|
888 int nr = tc.rows (); |
|
|
889 int nc = tc.columns (); |
|
|
890 |
|
|
891 if (tc.is_real_matrix ()) |
|
|
892 { |
|
|
893 os << "# 3D data...\n" |
|
|
894 << "# type: matrix\n" |
|
|
895 << "# total rows: " << nr << "\n" |
|
|
896 << "# total columns: " << nc << "\n"; |
|
|
897 |
|
|
898 if (parametric) |
|
|
899 { |
|
|
900 int extras = nc % 3; |
|
|
901 if (extras) |
|
|
902 warning ("ignoring last %d columns", extras); |
|
|
903 |
|
|
904 Matrix tmp = tc.matrix_value (); |
|
|
905 tmp = strip_infnan (tmp); |
|
|
906 nr = tmp.rows (); |
|
|
907 |
|
|
908 for (int i = 0; i < nc-extras; i += 3) |
|
|
909 { |
|
|
910 os << tmp.extract (0, i, nr-1, i+2); |
|
|
911 if (i+3 < nc-extras) |
|
|
912 os << "\n"; |
|
|
913 } |
|
|
914 } |
|
|
915 else |
|
|
916 { |
|
|
917 Matrix tmp = tc.matrix_value (); |
|
|
918 tmp = strip_infnan (tmp); |
|
|
919 nr = tmp.rows (); |
|
|
920 |
|
|
921 for (int i = 0; i < nc; i++) |
|
|
922 { |
|
|
923 os << tmp.extract (0, i, nr-1, i); |
|
|
924 if (i+1 < nc) |
|
|
925 os << "\n"; |
|
|
926 } |
|
|
927 } |
|
|
928 } |
|
|
929 else |
|
|
930 { |
|
|
931 ::error ("for now, I can only save real matrices in 3D format"); |
|
|
932 fail = true; |
|
|
933 } |
|
|
934 |
|
|
935 return (os && ! fail); |
|
|
936 } |
|
|
937 |
|
|
938 static int |
|
|
939 save_precision (void) |
|
|
940 { |
|
|
941 double val; |
|
|
942 if (builtin_real_scalar_variable ("save_precision", val) |
|
|
943 && ! xisnan (val)) |
|
|
944 { |
|
|
945 int ival = NINT (val); |
|
|
946 if (ival >= 0 && ival == val) |
|
|
947 { |
|
|
948 Vsave_precision = ival; |
|
|
949 return 0; |
|
|
950 } |
|
|
951 } |
|
|
952 gripe_invalid_value_specified ("save_precision"); |
|
|
953 return -1; |
|
|
954 } |
|
|
955 |
|
|
956 void |
|
|
957 symbols_of_ls_oct_ascii (void) |
|
|
958 { |
|
|
959 DEFVAR (save_precision, 15.0, save_precision, |
|
|
960 "-*- texinfo -*-\n\ |
|
|
961 @defvr {Built-in Variable} save_precision\n\ |
|
|
962 This variable specifies the number of digits to keep when saving data in\n\ |
|
|
963 text format. The default value is 17.\n\ |
|
|
964 @end defvr"); |
|
|
965 } |
|
|
966 |
|
|
967 /* |
|
|
968 ;;; Local Variables: *** |
|
|
969 ;;; mode: C++ *** |
|
|
970 ;;; End: *** |
|
|
971 */ |
|
|
972 |
