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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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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22 */ |
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23 |
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24 #if !defined (octave_cmd_edit_h) |
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25 #define octave_cmd_edit_h 1 |
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26 |
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27 #include <cstdio> |
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28 |
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29 #include <set> |
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30 #include <string> |
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31 |
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32 #include "str-vec.h" |
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33 |
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34 class |
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35 OCTAVE_API |
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36 command_editor |
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37 { |
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38 protected: |
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39 |
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40 command_editor (void) |
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41 : command_number (0) { } |
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42 |
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43 public: |
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44 |
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45 typedef int (*startup_hook_fcn) (void); |
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46 |
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47 typedef int (*event_hook_fcn) (void); |
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48 |
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49 typedef std::string (*completion_fcn) (const std::string&, int); |
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50 |
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51 virtual ~command_editor (void) { } |
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52 |
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53 static void set_name (const std::string& n); |
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54 |
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55 static std::string readline (const std::string& prompt); |
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56 |
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57 static std::string readline (const std::string& prompt, bool& eof); |
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58 |
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59 static void set_input_stream (FILE *f); |
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60 |
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61 static FILE *get_input_stream (void); |
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62 |
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63 static void set_output_stream (FILE *f); |
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64 |
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65 static FILE *get_output_stream (void); |
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66 |
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67 static int terminal_rows (void); |
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68 |
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69 static int terminal_cols (void); |
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70 |
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71 static void clear_screen (void); |
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72 |
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73 static void resize_terminal (void); |
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74 |
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75 static std::string decode_prompt_string (const std::string& s); |
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76 |
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77 static void restore_terminal_state (void); |
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78 |
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79 static void blink_matching_paren (bool flag); |
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80 |
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81 static void set_basic_word_break_characters (const std::string& s); |
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82 |
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83 static void set_completer_word_break_characters (const std::string& s); |
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84 |
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85 static void set_basic_quote_characters (const std::string& s); |
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86 |
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87 static void set_completion_append_character (char c); |
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88 |
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89 static void set_completion_function (completion_fcn f); |
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90 |
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91 static completion_fcn get_completion_function (void); |
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92 |
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93 static string_vector generate_filename_completions (const std::string& text); |
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94 |
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95 static void insert_text (const std::string& text); |
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96 |
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97 static void newline (void); |
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98 |
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99 static void clear_undo_list (void); |
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100 |
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101 static void add_startup_hook (startup_hook_fcn f); |
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102 |
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103 static void remove_startup_hook (startup_hook_fcn f); |
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104 |
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105 static void add_event_hook (event_hook_fcn f); |
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106 |
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107 static void remove_event_hook (event_hook_fcn f); |
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108 |
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109 static void read_init_file (const std::string& file = std::string ()); |
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110 |
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111 static bool filename_completion_desired (bool); |
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112 |
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113 static int current_command_number (void); |
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114 |
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115 static void reset_current_command_number (int n); |
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116 |
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117 static void increment_current_command_number (void); |
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118 |
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119 private: |
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120 |
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121 // No copying! |
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122 |
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123 command_editor (const command_editor&); |
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124 |
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125 command_editor& operator = (const command_editor&); |
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126 |
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127 static bool instance_ok (void); |
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128 |
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129 static void make_command_editor (void); |
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130 |
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131 static int startup_handler (void); |
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132 |
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133 static int event_handler (void); |
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134 |
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135 static std::set<startup_hook_fcn> startup_hook_set; |
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136 |
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137 static std::set<event_hook_fcn> event_hook_set; |
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138 |
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139 typedef std::set<startup_hook_fcn>::iterator startup_hook_set_iterator; |
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140 typedef std::set<startup_hook_fcn>::const_iterator startup_hook_set_const_iterator; |
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141 |
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142 typedef std::set<event_hook_fcn>::iterator event_hook_set_iterator; |
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143 typedef std::set<event_hook_fcn>::const_iterator event_hook_set_const_iterator; |
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144 |
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145 // The real thing. |
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146 static command_editor *instance; |
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147 |
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148 protected: |
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149 |
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150 // To use something other than the GNU readline library, derive a new |
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151 // class from command_editor, overload these functions as |
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152 // necessary, and make instance point to the new class. |
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153 |
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154 virtual void do_set_name (const std::string&) { } |
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155 |
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156 std::string do_readline (const std::string& prompt) |
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157 { |
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158 bool eof; |
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159 |
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160 return do_readline (prompt, eof); |
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161 } |
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162 |
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163 virtual std::string do_readline (const std::string&, bool&) = 0; |
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164 |
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165 virtual void do_set_input_stream (FILE *) = 0; |
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166 |
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167 virtual FILE *do_get_input_stream (void) = 0; |
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168 |
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169 virtual void do_set_output_stream (FILE *) = 0; |
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170 |
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171 virtual FILE *do_get_output_stream (void) = 0; |
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172 |
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173 virtual int do_terminal_rows (void) { return 24; } |
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174 |
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175 virtual int do_terminal_cols (void) { return 80; } |
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176 |
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177 virtual void do_clear_screen (void) { } |
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178 |
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179 virtual void do_resize_terminal (void) { } |
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180 |
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181 virtual std::string do_decode_prompt_string (const std::string&); |
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182 |
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183 virtual std::string newline_chars (void) { return "\n"; } |
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184 |
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185 virtual void do_restore_terminal_state (void) { } |
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186 |
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187 virtual void do_blink_matching_paren (bool) { } |
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188 |
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189 virtual void do_set_basic_word_break_characters (const std::string&) { } |
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190 |
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191 virtual void do_set_completer_word_break_characters (const std::string&) { } |
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192 |
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193 virtual void do_set_basic_quote_characters (const std::string&) { } |
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194 |
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195 virtual void do_set_completion_append_character (char) { } |
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196 |
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197 virtual void do_set_completion_function (completion_fcn) { } |
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198 |
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199 virtual completion_fcn do_get_completion_function (void) const { return 0; } |
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200 |
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201 virtual string_vector do_generate_filename_completions (const std::string& text) = 0; |
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202 |
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203 virtual void do_insert_text (const std::string&) = 0; |
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204 |
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205 virtual void do_newline (void) = 0; |
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206 |
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207 virtual void do_clear_undo_list (void) { } |
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208 |
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209 virtual void set_startup_hook (startup_hook_fcn) { } |
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210 |
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211 virtual void restore_startup_hook (void) { } |
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212 |
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213 virtual void set_event_hook (startup_hook_fcn) { } |
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214 |
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215 virtual void restore_event_hook (void) { } |
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216 |
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217 virtual void do_read_init_file (const std::string&) { } |
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218 |
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219 virtual bool do_filename_completion_desired (bool) { return false; } |
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220 |
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221 int read_octal (const std::string& s); |
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222 |
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223 void error (int); |
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224 |
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225 void error (const std::string&); |
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226 |
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227 // The current command number. |
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228 int command_number; |
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229 }; |
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230 |
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231 #endif |
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232 |
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233 /* |
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234 ;;; Local Variables: *** |
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235 ;;; mode: C++ *** |
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236 ;;; End: *** |
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237 */ |
