Mercurial > octave
annotate libinterp/corefcn/input.h @ 26376:00f796120a6d stable
maint: Update copyright dates in all source files.
author | John W. Eaton <jwe@octave.org> |
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date | Wed, 02 Jan 2019 16:32:43 -0500 |
parents | e6d3f4f9473c |
children | 8408acb7ca4f 2310164737b3 |
rev | line source |
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1 | 1 /* |
2 | |
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3 Copyright (C) 1993-2019 John W. Eaton |
1 | 4 |
5 This file is part of Octave. | |
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. |
1 | 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. |
1 | 16 |
17 You should have received a copy of the GNU General Public License | |
7016 | 18 along with Octave; see the file COPYING. If not, see |
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19 <https://www.gnu.org/licenses/>. |
1 | 20 |
21 */ | |
22 | |
23 // Use the GNU readline library for command line editing and hisory. | |
24 | |
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25 #if ! defined (octave_input_h) |
383 | 26 #define octave_input_h 1 |
1 | 27 |
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28 #include "octave-config.h" |
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29 |
1342 | 30 #include <cstdio> |
1 | 31 |
1750 | 32 #include <string> |
33 | |
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34 #include "hook-fcn.h" |
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35 #include "oct-refcount.h" |
3255 | 36 #include "oct-time.h" |
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37 #include "ovl.h" |
3770 | 38 #include "pager.h" |
3255 | 39 |
3804 | 40 // TRUE after a call to completion_matches. |
2299 | 41 extern bool octave_completion_matches_called; |
42 | |
7409 | 43 // TRUE if the plotting system has requested a call to drawnow at |
44 // the next user prompt. | |
7414 | 45 extern OCTINTERP_API bool Vdrawnow_requested; |
7409 | 46 |
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47 // TRUE if we are in debugging mode. |
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48 extern OCTINTERP_API bool Vdebugging; |
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49 |
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50 // TRUE if we are not executing a command direct from debug> prompt. |
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51 extern OCTINTERP_API bool Vtrack_line_num; |
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52 |
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53 extern octave::sys::time Vlast_prompt_time; |
5640 | 54 |
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55 class octave_value; |
3165 | 56 |
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57 namespace octave |
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58 { |
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59 class interpreter; |
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60 class base_lexer; |
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61 |
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62 class input_system |
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63 { |
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64 public: |
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65 |
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66 input_system (interpreter& interp); |
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67 |
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68 void initialize (bool line_editing); |
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69 |
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70 octave_value PS1 (const octave_value_list& args, int nargout); |
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71 |
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72 std::string PS1 (void) const { return m_PS1; } |
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73 |
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74 std::string PS1 (const std::string& s) |
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75 { |
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76 std::string val = m_PS1; |
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77 m_PS1 = s; |
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78 return val; |
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79 } |
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80 |
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81 void set_PS1 (const std::string& s) { m_PS1 = s; } |
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82 |
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83 octave_value PS2 (const octave_value_list& args, int nargout); |
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84 |
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85 std::string PS2 (void) const { return m_PS2; } |
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86 |
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87 std::string PS2 (const std::string& s) |
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88 { |
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89 std::string val = m_PS2; |
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90 m_PS2 = s; |
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91 return val; |
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92 } |
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93 |
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94 void set_PS2 (const std::string& s) { m_PS2 = s; } |
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95 |
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96 std::string last_debugging_command (void) const |
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97 { |
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98 return m_last_debugging_command; |
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99 } |
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100 |
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101 std::string last_debugging_command (const std::string& s) |
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102 { |
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103 std::string val = m_last_debugging_command; |
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104 m_last_debugging_command = s; |
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105 return val; |
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106 } |
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107 |
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108 octave_value |
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109 completion_append_char (const octave_value_list& args, int nargout); |
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110 |
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111 char completion_append_char (void) const |
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112 { |
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113 return m_completion_append_char; |
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114 } |
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115 |
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116 char completion_append_char (char c) |
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117 { |
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118 char val = m_completion_append_char; |
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119 m_completion_append_char = c; |
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120 return val; |
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121 } |
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122 |
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123 void set_completion_append_char (char c) { m_completion_append_char = c; } |
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124 |
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125 octave_value gud_mode (const octave_value_list& args, int nargout); |
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126 |
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127 bool gud_mode (void) const { return m_gud_mode; } |
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128 |
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129 bool gud_mode (bool flag) |
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130 { |
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131 bool val = m_gud_mode; |
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132 m_gud_mode = flag; |
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133 return val; |
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134 } |
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135 |
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136 void set_gud_mode (bool flag) { m_gud_mode = flag; } |
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137 |
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138 octave_value mfile_encoding (const octave_value_list& args, int nargout); |
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139 |
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140 std::string mfile_encoding (void) const { return m_mfile_encoding; } |
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141 |
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142 std::string mfile_encoding (const std::string& s) |
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143 { |
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144 std::string val = m_mfile_encoding; |
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145 m_mfile_encoding = s; |
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146 return val; |
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147 } |
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148 |
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149 void set_mfile_encoding (const std::string& s) { m_mfile_encoding = s; } |
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150 |
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151 bool yes_or_no (const std::string& prompt); |
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152 |
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153 std::string interactive_input (const std::string& s, bool& eof); |
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154 |
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155 octave_value_list |
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156 get_user_input (const octave_value_list& args, int nargout); |
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157 |
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158 octave_value |
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159 keyboard (const octave_value_list& args = octave_value_list ()); |
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160 |
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161 bool have_input_event_hooks (void) const; |
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162 |
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163 void add_input_event_hook (const hook_function& hook_fcn); |
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164 |
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165 bool remove_input_event_hook (const std::string& hook_fcn_id); |
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166 |
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167 void clear_input_event_hooks (void); |
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168 |
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169 void run_input_event_hooks (void); |
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170 |
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171 private: |
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172 |
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173 interpreter& m_interpreter; |
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174 |
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175 // Primary prompt string. |
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176 std::string m_PS1; |
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177 |
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178 // Secondary prompt string. |
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179 std::string m_PS2; |
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180 |
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181 // Character to append after successful command-line completion |
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182 // attempts. |
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183 char m_completion_append_char; |
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184 |
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185 // TRUE if we are running in the Emacs GUD mode. |
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186 bool m_gud_mode; |
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187 |
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188 // Codepage which is used to read .m files |
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189 std::string m_mfile_encoding; |
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190 |
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191 // If we are in debugging mode, this is the last command entered, |
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192 // so that we can repeat the previous command if the user just |
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193 // types RET. |
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194 std::string m_last_debugging_command; |
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195 |
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196 hook_function_list m_input_event_hook_functions; |
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197 |
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198 std::string gnu_readline (const std::string& s, bool& eof) const; |
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199 |
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200 void get_debug_input (const std::string& prompt); |
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201 }; |
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202 |
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203 class base_reader |
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204 { |
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205 public: |
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206 |
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207 friend class input_reader; |
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208 |
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209 base_reader (base_lexer *lxr) |
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210 : m_count (1), m_pflag (0), m_lexer (lxr) |
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211 { } |
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212 |
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213 base_reader (const base_reader& x) |
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214 : m_count (1), m_pflag (x.m_pflag), m_lexer (x.m_lexer) |
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215 { } |
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216 |
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217 virtual ~base_reader (void) = default; |
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218 |
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219 virtual std::string get_input (bool& eof) = 0; |
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220 |
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221 virtual std::string input_source (void) const { return s_in_src; } |
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222 |
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223 void reset (void) { promptflag (1); } |
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224 |
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225 void increment_promptflag (void) { m_pflag++; } |
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226 |
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227 void decrement_promptflag (void) { m_pflag--; } |
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228 |
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229 int promptflag (void) const { return m_pflag; } |
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230 |
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231 int promptflag (int n) |
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232 { |
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233 int retval = m_pflag; |
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234 m_pflag = n; |
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235 return retval; |
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236 } |
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237 |
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238 std::string octave_gets (bool& eof); |
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239 |
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240 virtual bool reading_fcn_file (void) const; |
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241 |
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242 virtual bool reading_classdef_file (void) const; |
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243 |
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244 virtual bool reading_script_file (void) const; |
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245 |
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246 virtual bool input_from_terminal (void) const { return false; } |
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247 |
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248 virtual bool input_from_file (void) const { return false; } |
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249 |
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250 virtual bool input_from_eval_string (void) const { return false; } |
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251 |
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252 private: |
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253 |
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254 refcount<int> m_count; |
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255 |
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256 int m_pflag; |
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257 |
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258 base_lexer *m_lexer; |
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259 |
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260 static const std::string s_in_src; |
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261 }; |
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262 |
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263 class input_reader |
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264 { |
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265 public: |
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266 |
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267 input_reader (base_lexer *lxr = nullptr); |
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268 |
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269 input_reader (FILE *file, base_lexer *lxr = nullptr); |
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270 |
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271 input_reader (const std::string& str, base_lexer *lxr = nullptr); |
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272 |
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273 input_reader (const input_reader& ir) |
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274 { |
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275 m_rep = ir.m_rep; |
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276 m_rep->m_count++; |
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277 } |
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278 |
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279 input_reader& operator = (const input_reader& ir) |
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280 { |
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281 if (&ir != this) |
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282 { |
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283 m_rep = ir.m_rep; |
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284 m_rep->m_count++; |
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285 } |
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286 |
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287 return *this; |
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288 } |
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289 |
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290 ~input_reader (void) |
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291 { |
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292 if (--m_rep->m_count == 0) |
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293 delete m_rep; |
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294 } |
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295 |
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296 void reset (void) { return m_rep->reset (); } |
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297 |
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298 void increment_promptflag (void) { m_rep->increment_promptflag (); } |
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299 |
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300 void decrement_promptflag (void) { m_rep->decrement_promptflag (); } |
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301 |
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302 int promptflag (void) const { return m_rep->promptflag (); } |
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303 |
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304 int promptflag (int n) { return m_rep->promptflag (n); } |
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305 |
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306 std::string get_input (bool& eof) |
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307 { |
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308 return m_rep->get_input (eof); |
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309 } |
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310 |
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311 std::string input_source (void) const |
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312 { |
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313 return m_rep->input_source (); |
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314 } |
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315 |
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316 bool input_from_terminal (void) const |
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317 { |
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318 return m_rep->input_from_terminal (); |
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319 } |
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320 |
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321 bool input_from_file (void) const |
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322 { |
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323 return m_rep->input_from_file (); |
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324 } |
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325 |
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326 bool input_from_eval_string (void) const |
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327 { |
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328 return m_rep->input_from_eval_string (); |
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329 } |
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330 |
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331 private: |
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332 |
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333 base_reader *m_rep; |
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334 }; |
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335 } |
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336 |
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337 #if defined (OCTAVE_USE_DEPRECATED_FUNCTIONS) |
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338 |
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339 OCTAVE_DEPRECATED (5, "use 'octave::input_system::yes_or_no' instead") |
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340 extern bool octave_yes_or_no (const std::string& prompt); |
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341 |
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342 OCTAVE_DEPRECATED (5, "use 'octave::input_system::keyboard' instead") |
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343 extern octave_value do_keyboard (const octave_value_list& args |
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344 = octave_value_list ()); |
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345 |
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346 OCTAVE_DEPRECATED (5, "use 'octave::input_system::clear_input_event_hooks' instead") |
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347 extern void remove_input_event_hook_functions (void); |
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348 |
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349 OCTAVE_DEPRECATED (5, "this function will be removed in a future version of Octave") |
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350 extern OCTINTERP_API FILE * get_input_from_stdin (void); |
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351 |
1 | 352 #endif |
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353 |
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354 #endif |