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annotate libinterp/dldfcn/__init_gnuplot__.cc @ 29942:7dbbdd00db4a

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Fix second typo in gnuplot warning message (bug #61010). * __init_gnuplot__.cc (gnuplot_graphics_toolkit::gnuplot_graphics_toolkit): Fix typo "it's" -> "its".
author Rik <rik@octave.org>
date Wed, 04 Aug 2021 21:32:53 -0700
parents 5f1390d6b5b4
children 32c3a5805893
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2007-2021 The Octave Project Developers
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4 //
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5 // See the file COPYRIGHT.md in the top-level directory of this
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6 // distribution or <https://octave.org/copyright/>.
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7 //
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8 // This file is part of Octave.
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9 //
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10 // Octave is free software: you can redistribute it and/or modify it
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11 // under the terms of the GNU General Public License as published by
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12 // the Free Software Foundation, either version 3 of the License, or
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13 // (at your option) any later version.
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14 //
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15 // Octave is distributed in the hope that it will be useful, but
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 // GNU General Public License for more details.
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19 //
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20 // You should have received a copy of the GNU General Public License
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21 // along with Octave; see the file COPYING. If not, see
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22 // <https://www.gnu.org/licenses/>.
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23 //
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24 ////////////////////////////////////////////////////////////////////////
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25
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26 /*
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27
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28 To initialize:
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29
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30 graphics_toolkit ("gnuplot");
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31 plot (randn (1e3, 1));
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32
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33 */
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34
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35 #if defined (HAVE_CONFIG_H)
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36 # include "config.h"
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37 #endif
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38
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39 #include <string>
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40
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41 #include "dMatrix.h"
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42 #include "file-stat.h"
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43 #include "oct-env.h"
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44
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45 #include "build-env.h"
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46 #include "builtin-defun-decls.h"
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47 #include "defun-dld.h"
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48 #include "error.h"
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49 #include "graphics.h"
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50 #include "interpreter-private.h"
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51 #include "interpreter.h"
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52 #include "ov.h"
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53 #include "ovl.h"
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54 #include "parse.h"
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55 #include "utils.h"
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56 #include "variables.h"
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57
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58 // PKG_ADD: if (__have_gnuplot__ ()) register_graphics_toolkit ("gnuplot"); endif
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59
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60 class gnuplot_graphics_toolkit : public octave::base_graphics_toolkit
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61 {
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62 public:
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63 gnuplot_graphics_toolkit (octave::interpreter& interp)
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64 : octave::base_graphics_toolkit ("gnuplot"), m_interpreter (interp)
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65 {
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66 static bool warned = false;
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67
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68 if (! warned)
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69 {
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70 warning_with_id
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71 ("Octave:gnuplot-graphics",
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72 "using the gnuplot graphics toolkit is discouraged\n\
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73 \n\
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74 The gnuplot graphics toolkit is not actively maintained and has a number\n\
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75 of limitations that are unlikely to be fixed. Communication with gnuplot\n\
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76 uses a one-directional pipe and limited information is passed back to the\n\
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77 Octave interpreter so most changes made interactively in the plot window\n\
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78 will not be reflected in the graphics properties managed by Octave. For\n\
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79 example, if the plot window is closed with a mouse click, Octave will not\n\
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80 be notified and will not update its internal list of open figure windows.\n\
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81 The qt toolkit is recommended instead.\n");
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82
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83 warned = true;
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84 }
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85 }
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86
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87 ~gnuplot_graphics_toolkit (void) = default;
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88
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89 bool is_valid (void) const { return true; }
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90
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91 bool initialize (const graphics_object& go)
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92 {
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93 return go.isa ("figure");
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94 }
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95
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96 void finalize (const graphics_object& go)
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97 {
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98 if (go.isa ("figure"))
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99 {
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100 const figure::properties& props
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101 = dynamic_cast<const figure::properties&> (go.get_properties ());
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102
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103 send_quit (props.get___plot_stream__ ());
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104 }
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105 }
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106
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107 void update (const graphics_object& go, int id)
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108 {
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109 if (go.isa ("figure"))
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110 {
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111 graphics_object obj (go);
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112
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113 figure::properties& props
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114 = dynamic_cast<figure::properties&> (obj.get_properties ());
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115
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116 switch (id)
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117 {
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118 case base_properties::ID_VISIBLE:
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119 if (! props.is_visible ())
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120 {
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121 send_quit (props.get___plot_stream__ ());
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122 props.set___plot_stream__ (Matrix ());
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123 props.set_graphicssmoothing (false);
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124 }
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125 break;
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126 }
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127 }
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128 }
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129
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130 void redraw_figure (const graphics_object& go) const
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131 {
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132 static bool drawnow_executing = false;
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133
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134 // Prevent recursion
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135 if (! drawnow_executing)
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136 {
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137 octave::unwind_protect_var<bool> restore_var (drawnow_executing, true);
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138
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139 octave_value_list args;
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140 args(0) = go.get_handle ().as_octave_value ();
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141 octave::feval ("__gnuplot_drawnow__", args);
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142 }
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143 }
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144
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145 void print_figure (const graphics_object& go, const std::string& term,
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146 const std::string& file,
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147 const std::string& debug_file) const
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148 {
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149 octave_value_list args;
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150 if (! debug_file.empty ())
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151 args(3) = debug_file;
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152 args(2) = file;
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153 args(1) = term;
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154 args(0) = go.get_handle ().as_octave_value ();
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155 octave::feval ("__gnuplot_drawnow__", args);
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156 }
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157
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158 Matrix get_canvas_size (const graphics_handle&) const
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159 {
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160 Matrix sz (1, 2, 0.0);
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161 return sz;
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162 }
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163
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164 double get_screen_resolution (void) const
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165 { return 72.0; }
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166
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167 Matrix get_screen_size (void) const
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168 { return Matrix (1, 2, 0.0); }
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169
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170 void close (void)
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171 {
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172 if (m_interpreter.mislocked ("__init_gnuplot__"))
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173 m_interpreter.munlock ("__init_gnuplot__");
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174 }
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175
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176 private:
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177
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178 void send_quit (const octave_value& pstream) const
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179 {
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180 if (! pstream.isempty ())
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181 {
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182 octave_value_list args;
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183 Matrix fids = pstream.matrix_value ();
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184
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185 Ffputs (m_interpreter, ovl (fids(0), "\nquit;\n"));
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186
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187 Ffflush (m_interpreter, ovl (fids(0)));
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188 Fpclose (m_interpreter, ovl (fids(0)));
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189
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190 if (fids.numel () > 1)
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191 {
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192 Fpclose (m_interpreter, ovl (fids(1)));
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193
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194 if (fids.numel () > 2)
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195 Fwaitpid (ovl (fids(2)));
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196 }
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197 }
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198 }
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199
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200 octave::interpreter& m_interpreter;
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201 };
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202
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203 static bool
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204 have_gnuplot_binary (void)
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205 {
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206 const std::string exeext = octave::build_env::EXEEXT;
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207 const std::string path = octave::sys::env::getenv ("PATH");
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208 bool retval = false;
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209
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210 try
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211 {
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212 octave_value_list tmp
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213 = octave::feval ("gnuplot_binary", octave_value_list ());
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214
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215 if (tmp(0).is_string () && ! tmp(0).isempty ())
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diff changeset
216 {
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diff changeset
217 std::string gnuplot_binary = tmp(0).string_value ();
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diff changeset
218
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diff changeset
219 string_vector args (gnuplot_binary);
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diff changeset
220 std::string gnuplot_path = octave::search_path_for_file (path, args);
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diff changeset
221
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diff changeset
222 octave::sys::file_stat fs (gnuplot_path);
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223
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diff changeset
224 if (! fs.exists () && ! exeext.empty ())
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diff changeset
225 {
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diff changeset
226 args[0] += exeext;
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diff changeset
227
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228 gnuplot_path = octave::search_path_for_file (path, args);
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diff changeset
229
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diff changeset
230 fs = octave::sys::file_stat (gnuplot_path);
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diff changeset
231 }
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diff changeset
232
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diff changeset
233 retval = fs.exists ();
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diff changeset
234 }
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diff changeset
235 }
29163
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diff changeset
236 catch (const octave::execution_exception&)
29029
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diff changeset
237 {
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diff changeset
238 octave::interpreter& interp
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diff changeset
239 = octave::__get_interpreter__ ("have_gnuplot_binary");
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240
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diff changeset
241 interp.recover_from_exception ();
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diff changeset
242 }
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243
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diff changeset
244 return retval;
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245 }
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diff changeset
246
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diff changeset
247 // Initialize the gnuplot graphics toolkit.
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248
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249 DEFMETHOD_DLD (__init_gnuplot__, interp, , ,
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250 doc: /* -*- texinfo -*-
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diff changeset
251 @deftypefn {} {} __init_gnuplot__ ()
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diff changeset
252 Undocumented internal function.
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diff changeset
253 @end deftypefn */)
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254 {
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diff changeset
255 if (! have_gnuplot_binary ())
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diff changeset
256 error ("__init_gnuplot__: the gnuplot program is not available, see 'gnuplot_binary'");
27862
813f76932ab6 * __init_gnuplot__.cc: Eliminate static variable "toolkit_loaded".
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diff changeset
257 else if (! interp.mislocked ("__init_gnuplot__"))
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diff changeset
258 {
23774
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diff changeset
259 octave::gtk_manager& gtk_mgr = interp.get_gtk_manager ();
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diff changeset
260
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diff changeset
261 octave::graphics_toolkit tk (new gnuplot_graphics_toolkit (interp));
23774
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diff changeset
262 gtk_mgr.load_toolkit (tk);
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263
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diff changeset
264 interp.mlock ();
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diff changeset
265 }
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diff changeset
266
23024
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diff changeset
267 return octave_value_list ();
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268 }
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269
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diff changeset
270 DEFUN_DLD (__have_gnuplot__, , ,
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diff changeset
271 doc: /* -*- texinfo -*-
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diff changeset
272 @deftypefn {} {@var{gnuplot_available} =} __have_gnuplot__ ()
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273 Undocumented internal function.
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274 @end deftypefn */)
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275 {
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276 return ovl (have_gnuplot_binary ());
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277 }
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278
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279 /*
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280 ## No test needed for internal helper function.
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281 %!assert (1)
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282 */