Mercurial > octave
annotate libinterp/dldfcn/__init_gnuplot__.cc @ 23703:6eb5f6199a5a
move mlock, munlock, and mislocked to interpreter class
* interpreter.h, interpreter.cc (interperter::mlock,
interperter::munlock, interperter::mislocked): New functions.
* variables (mlock, munlock, mislocked): Deprecate. Forward to
interpreter methods. Change all uses.
author | John W. Eaton <jwe@octave.org> |
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date | Mon, 26 Jun 2017 18:38:40 -0400 |
parents | 80c42f4cca13 |
children | 8acd390d16c9 |
rev | line source |
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1 /* |
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2 |
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3 Copyright (C) 2007-2017 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 |
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9 the Free Software Foundation; either version 3 of the License, or |
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10 (at your option) any later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but |
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13 WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 GNU General Public License for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, see |
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19 <http://www.gnu.org/licenses/>. |
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20 |
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21 */ |
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22 |
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23 /* |
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24 |
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25 To initialize: |
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26 |
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27 graphics_toolkit ("gnuplot"); |
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28 plot (randn (1e3, 1)); |
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29 |
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30 */ |
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31 |
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32 #if defined (HAVE_CONFIG_H) |
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33 # include "config.h" |
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34 #endif |
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35 |
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36 #include <string> |
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37 |
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38 #include "dMatrix.h" |
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39 #include "file-stat.h" |
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40 #include "oct-env.h" |
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41 |
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42 #include "build-env.h" |
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43 #include "builtin-defun-decls.h" |
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44 #include "defun-dld.h" |
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45 #include "error.h" |
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46 #include "graphics.h" |
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47 #include "ov.h" |
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48 #include "ovl.h" |
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49 #include "parse.h" |
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50 #include "utils.h" |
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51 #include "variables.h" |
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52 |
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53 // PKG_ADD: if (__have_gnuplot__ ()) register_graphics_toolkit ("gnuplot"); endif |
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54 |
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55 static bool toolkit_loaded = false; |
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56 |
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57 class gnuplot_graphics_toolkit : public base_graphics_toolkit |
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58 { |
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59 public: |
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60 gnuplot_graphics_toolkit (octave::interpreter& interp) |
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61 : base_graphics_toolkit ("gnuplot"), m_interpreter (interp) { } |
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62 |
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63 ~gnuplot_graphics_toolkit (void) = default; |
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64 |
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65 bool is_valid (void) const { return true; } |
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66 |
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67 bool initialize (const graphics_object& go) |
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68 { |
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69 return go.isa ("figure"); |
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70 } |
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71 |
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72 void finalize (const graphics_object& go) |
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73 { |
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74 if (go.isa ("figure")) |
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75 { |
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76 const figure::properties& props = |
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77 dynamic_cast<const figure::properties&> (go.get_properties ()); |
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78 |
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79 send_quit (props.get___plot_stream__ ()); |
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80 } |
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81 } |
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82 |
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83 void update (const graphics_object& go, int id) |
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84 { |
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85 if (go.isa ("figure")) |
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86 { |
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87 graphics_object obj (go); |
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88 |
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89 figure::properties& props = |
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90 dynamic_cast<figure::properties&> (obj.get_properties ()); |
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91 |
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92 switch (id) |
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93 { |
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94 case base_properties::ID_VISIBLE: |
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95 if (! props.is_visible ()) |
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96 { |
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97 send_quit (props.get___plot_stream__ ()); |
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98 props.set___plot_stream__ (Matrix ()); |
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99 props.set_graphicssmoothing (false); |
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100 } |
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101 break; |
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102 } |
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103 } |
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104 } |
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105 |
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106 void redraw_figure (const graphics_object& go) const |
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107 { |
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108 octave_value_list args; |
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109 args(0) = go.get_handle ().as_octave_value (); |
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110 octave::feval ("__gnuplot_drawnow__", args); |
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111 } |
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112 |
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113 void print_figure (const graphics_object& go, const std::string& term, |
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114 const std::string& file, |
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115 const std::string& debug_file) const |
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116 { |
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117 octave_value_list args; |
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118 if (! debug_file.empty ()) |
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119 args(3) = debug_file; |
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120 args(2) = file; |
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121 args(1) = term; |
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122 args(0) = go.get_handle ().as_octave_value (); |
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123 octave::feval ("__gnuplot_drawnow__", args); |
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124 } |
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125 |
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126 Matrix get_canvas_size (const graphics_handle&) const |
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127 { |
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128 Matrix sz (1, 2, 0.0); |
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129 return sz; |
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130 } |
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131 |
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132 double get_screen_resolution (void) const |
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133 { return 72.0; } |
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134 |
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135 Matrix get_screen_size (void) const |
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136 { return Matrix (1, 2, 0.0); } |
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137 |
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138 void close (void) |
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139 { |
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140 if (toolkit_loaded) |
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141 { |
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142 m_interpreter.munlock ("__init_gnuplot__"); |
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143 |
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144 gtk_manager::unload_toolkit ("gnuplot"); |
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145 |
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146 toolkit_loaded = false; |
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147 } |
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148 } |
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149 |
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150 private: |
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151 |
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152 void send_quit (const octave_value& pstream) const |
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153 { |
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154 if (! pstream.isempty ()) |
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155 { |
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156 octave_value_list args; |
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157 Matrix fids = pstream.matrix_value (); |
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158 |
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159 Ffputs (ovl (fids(0), "\nquit;\n")); |
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160 |
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161 Ffflush (ovl (fids(0))); |
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162 Fpclose (ovl (fids(0))); |
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163 |
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164 if (fids.numel () > 1) |
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165 { |
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166 Fpclose (ovl (fids(1))); |
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167 |
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168 if (fids.numel () > 2) |
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169 Fwaitpid (ovl (fids(2))); |
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170 } |
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171 } |
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172 } |
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173 |
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174 octave::interpreter& m_interpreter; |
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175 }; |
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176 |
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177 static bool |
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178 have_gnuplot_binary (void) |
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179 { |
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180 const std::string exeext = octave::build_env::EXEEXT; |
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181 const std::string path = octave::sys::env::getenv ("PATH"); |
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182 bool retval = false; |
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183 |
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184 try |
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185 { |
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186 octave_value_list tmp |
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187 = octave::feval ("gnuplot_binary", octave_value_list ()); |
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188 |
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189 if (tmp(0).is_string ()) |
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190 { |
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191 std::string gnuplot_binary = tmp(0).string_value (); |
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192 |
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193 string_vector args (gnuplot_binary); |
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194 std::string gnuplot_path = search_path_for_file (path, args); |
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195 |
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196 octave::sys::file_stat fs (gnuplot_path); |
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197 |
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198 if (! fs.exists () && ! exeext.empty ()) |
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199 { |
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200 args[0] += exeext; |
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201 |
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202 gnuplot_path = search_path_for_file (path, args); |
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203 |
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204 fs = octave::sys::file_stat (gnuplot_path); |
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205 } |
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206 |
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207 retval = fs.exists (); |
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208 } |
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209 } |
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210 catch (octave::execution_exception&) |
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211 { } |
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212 |
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213 return retval; |
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214 } |
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215 |
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216 // Initialize the gnuplot graphics toolkit. |
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217 |
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218 DEFMETHOD_DLD (__init_gnuplot__, interp, , , |
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219 doc: /* -*- texinfo -*- |
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220 @deftypefn {} {} __init_gnuplot__ () |
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221 Undocumented internal function. |
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222 @end deftypefn */) |
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223 { |
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224 if (! have_gnuplot_binary ()) |
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225 error ("__init_gnuplot__: the gnuplot program is not available, see 'gnuplot_binary'"); |
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226 else if (! toolkit_loaded) |
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227 { |
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228 interp.mlock (); |
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229 |
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230 graphics_toolkit tk (new gnuplot_graphics_toolkit (interp)); |
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231 gtk_manager::load_toolkit (tk); |
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232 |
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233 toolkit_loaded = true; |
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234 } |
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235 |
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236 return octave_value_list (); |
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237 } |
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238 |
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239 DEFUN_DLD (__have_gnuplot__, , , |
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240 doc: /* -*- texinfo -*- |
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241 @deftypefn {} {@var{gnuplot_available} =} __have_gnuplot__ () |
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242 Undocumented internal function. |
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243 @end deftypefn */) |
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Don't register gnuplot toolkit if gnuplot is not available (bug #35391)
Mike Miller <mtmiller@ieee.org>
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244 { |
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Rationalize #includes in libinterp/dldfcn directory.
Rik <rik@octave.org>
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245 return ovl (have_gnuplot_binary ()); |
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246 } |
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247 |
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maint: Clean up BIST tests so they don't produce warnings.
Rik <rik@octave.org>
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248 /* |
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249 ## No test needed for internal helper function. |
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250 %!assert (1) |
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251 */ |