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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 #ifdef HAVE_CONFIG_H |
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24 #include <config.h> |
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25 #endif |
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26 |
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27 #include <cstdlib> |
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28 #include <cstring> |
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29 |
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30 #include <string> |
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31 |
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32 #ifdef HAVE_UNISTD_H |
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33 #ifdef HAVE_SYS_TYPES_H |
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34 #include <sys/types.h> |
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35 #endif |
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36 #include <unistd.h> |
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37 #endif |
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38 |
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39 #include "cmd-edit.h" |
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40 #include "cmd-hist.h" |
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41 #include "lo-error.h" |
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42 #include "lo-utils.h" |
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43 #include "oct-env.h" |
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44 #include "oct-time.h" |
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45 |
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46 command_editor *command_editor::instance = 0; |
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47 |
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48 #if defined (USE_READLINE) |
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49 |
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50 #include <cstdio> |
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51 #include <cstdlib> |
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52 |
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53 #include "oct-rl-edit.h" |
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54 |
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55 class |
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56 gnu_readline : public command_editor |
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57 { |
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58 public: |
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59 |
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60 typedef command_editor::startup_hook_fcn startup_hook_fcn; |
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61 |
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62 typedef command_editor::event_hook_fcn event_hook_hook_fcn; |
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63 |
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64 typedef command_editor::completion_fcn completion_fcn; |
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65 |
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66 gnu_readline (void); |
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67 |
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68 ~gnu_readline (void) { } |
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69 |
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70 void do_set_name (const std::string& n); |
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71 |
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72 std::string do_readline (const std::string& prompt, bool& eof); |
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73 |
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74 void do_set_input_stream (FILE *f); |
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75 |
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76 FILE *do_get_input_stream (void); |
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77 |
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78 void do_set_output_stream (FILE *f); |
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79 |
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80 FILE *do_get_output_stream (void); |
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81 |
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82 int do_terminal_rows (void); |
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83 |
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84 int do_terminal_cols (void); |
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85 |
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86 void do_clear_screen (void); |
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87 |
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88 void do_resize_terminal (void); |
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89 |
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90 std::string newline_chars (void); |
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91 |
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92 void do_restore_terminal_state (void); |
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93 |
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94 void do_blink_matching_paren (bool flag); |
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95 |
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96 void do_set_basic_word_break_characters (const std::string& s); |
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97 |
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98 void do_set_completer_word_break_characters (const std::string& s); |
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99 |
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100 void do_set_basic_quote_characters (const std::string& s); |
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101 |
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102 void do_set_completion_append_character (char c); |
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103 |
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104 void do_set_completion_function (completion_fcn f); |
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105 |
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106 completion_fcn do_get_completion_function (void) const; |
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107 |
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108 void do_insert_text (const std::string& text); |
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109 |
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110 void do_newline (void); |
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111 |
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112 void do_clear_undo_list (void); |
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113 |
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114 void do_set_startup_hook (startup_hook_fcn f); |
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115 |
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116 void do_restore_startup_hook (void); |
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117 |
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118 void do_set_event_hook (event_hook_fcn f); |
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119 |
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120 void do_restore_event_hook (void); |
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121 |
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122 void do_read_init_file (const std::string& file); |
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123 |
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124 bool do_filename_completion_desired (bool); |
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125 |
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126 static int operate_and_get_next (int, int); |
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127 |
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128 static int history_search_backward (int, int); |
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129 |
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130 static int history_search_forward (int, int); |
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131 |
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132 private: |
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133 |
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134 startup_hook_fcn previous_startup_hook; |
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135 |
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136 event_hook_fcn previous_event_hook; |
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137 |
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138 completion_fcn completion_function; |
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139 |
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140 static char *command_generator (const char *text, int state); |
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141 |
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142 static char **command_completer (const char *text, int start, int end); |
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143 }; |
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144 |
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145 gnu_readline::gnu_readline () |
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146 : command_editor (), previous_startup_hook (0), |
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147 previous_event_hook (0), completion_function (0) |
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148 { |
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149 // XXX FIXME XXX -- need interface to rl_add_defun, rl_initialize, and |
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150 // a function to set rl_terminal_name |
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151 |
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152 std::string term = octave_env::getenv ("TERM"); |
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153 |
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154 octave_rl_set_terminal_name (term.c_str ()); |
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155 |
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156 octave_rl_initialize (); |
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157 |
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158 do_blink_matching_paren (true); |
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159 |
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160 /* Bind operate-and-get-next. */ |
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161 |
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162 octave_rl_add_defun ("operate-and-get-next", |
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163 gnu_readline::operate_and_get_next, |
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164 octave_rl_ctrl ('O')); |
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165 |
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166 /* And the history search functions. */ |
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167 |
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168 octave_rl_add_defun ("history-search-backward", |
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169 gnu_readline::history_search_backward, |
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170 octave_rl_meta ('P')); |
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171 |
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172 octave_rl_add_defun ("history-search-forward", |
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173 gnu_readline::history_search_forward, |
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174 octave_rl_meta ('N')); |
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175 } |
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176 |
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177 |
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178 |
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179 void |
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180 gnu_readline::do_set_name (const std::string& nm) |
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181 { |
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182 ::octave_rl_set_name (nm.c_str ()); |
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183 } |
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184 |
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185 std::string |
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186 gnu_readline::do_readline (const std::string& prompt, bool& eof) |
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187 { |
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188 std::string retval; |
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189 |
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190 eof = false; |
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191 |
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192 char *line = ::octave_rl_readline (prompt.c_str ()); |
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193 |
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194 if (line) |
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195 { |
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196 retval = line; |
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197 |
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198 free (line); |
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199 } |
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200 else |
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201 eof = true; |
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202 |
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203 return retval; |
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204 } |
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205 |
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206 void |
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207 gnu_readline::do_set_input_stream (FILE *f) |
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208 { |
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209 ::octave_rl_set_input_stream (f); |
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210 } |
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211 |
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212 FILE * |
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213 gnu_readline::do_get_input_stream (void) |
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214 { |
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215 return ::octave_rl_get_input_stream (); |
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216 } |
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217 |
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218 void |
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219 gnu_readline::do_set_output_stream (FILE *f) |
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220 { |
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221 ::octave_rl_set_output_stream (f); |
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222 } |
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223 |
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224 FILE * |
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225 gnu_readline::do_get_output_stream (void) |
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226 { |
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227 return ::octave_rl_get_output_stream (); |
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228 } |
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229 |
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230 // GNU readline handles SIGWINCH, so these values have a good chance |
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231 // of being correct even if the window changes size (they may be |
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232 // wrong if, for example, the luser changes the window size while the |
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233 // pager is running, and the signal is handled by the pager instead of |
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234 // us. |
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235 |
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236 int |
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237 gnu_readline::do_terminal_rows (void) |
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238 { |
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239 int sh = ::octave_rl_screen_height (); |
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240 |
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241 return sh > 0 ? sh : 24; |
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242 } |
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243 |
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244 int |
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245 gnu_readline::do_terminal_cols (void) |
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246 { |
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247 int sw = ::octave_rl_screen_width (); |
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248 |
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249 return sw > 0 ? sw : 80; |
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250 } |
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251 |
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252 void |
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253 gnu_readline::do_clear_screen (void) |
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254 { |
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255 ::octave_rl_clear_screen (); |
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256 } |
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257 |
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258 void |
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259 gnu_readline::do_resize_terminal (void) |
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260 { |
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261 ::octave_rl_resize_terminal (); |
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262 } |
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263 |
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264 std::string |
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265 gnu_readline::newline_chars (void) |
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266 { |
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267 return "\r\n"; |
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268 } |
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269 |
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270 void |
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271 gnu_readline::do_restore_terminal_state (void) |
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272 { |
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273 ::octave_rl_restore_terminal_state (); |
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274 } |
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275 |
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276 void |
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277 gnu_readline::do_blink_matching_paren (bool flag) |
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278 { |
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279 ::octave_rl_enable_paren_matching (flag ? 1 : 0); |
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280 } |
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281 |
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282 void |
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283 gnu_readline::do_set_basic_word_break_characters (const std::string& s) |
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284 { |
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285 ::octave_rl_set_basic_word_break_characters (s.c_str ()); |
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286 } |
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287 |
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288 void |
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289 gnu_readline::do_set_completer_word_break_characters (const std::string& s) |
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290 { |
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291 ::octave_rl_set_completer_word_break_characters (s.c_str ()); |
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292 } |
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293 |
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294 void |
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295 gnu_readline::do_set_basic_quote_characters (const std::string& s) |
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296 { |
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297 ::octave_rl_set_basic_quote_characters (s.c_str ()); |
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298 } |
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299 |
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300 void |
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301 gnu_readline::do_set_completion_append_character (char c) |
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302 { |
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303 ::octave_rl_set_completion_append_character (c); |
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304 } |
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305 |
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306 void |
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307 gnu_readline::do_set_completion_function (completion_fcn f) |
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308 { |
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309 completion_function = f; |
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310 |
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311 rl_attempted_completion_fcn_ptr fp |
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312 = f ? gnu_readline::command_completer : 0; |
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313 |
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314 ::octave_rl_set_completion_function (fp); |
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315 } |
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316 |
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317 gnu_readline::completion_fcn |
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318 gnu_readline::do_get_completion_function (void) const |
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319 { |
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320 return completion_function; |
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321 } |
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322 |
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323 void |
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324 gnu_readline::do_insert_text (const std::string& text) |
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325 { |
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326 ::octave_rl_insert_text (text.c_str ()); |
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327 } |
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328 |
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329 void |
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330 gnu_readline::do_newline (void) |
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331 { |
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332 ::octave_rl_newline (); |
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333 } |
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334 |
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335 void |
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336 gnu_readline::do_clear_undo_list () |
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337 { |
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338 ::octave_rl_clear_undo_list (); |
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339 } |
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340 |
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341 void |
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342 gnu_readline::do_set_startup_hook (startup_hook_fcn f) |
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343 { |
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344 previous_startup_hook = ::octave_rl_get_startup_hook (); |
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345 |
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346 ::octave_rl_set_startup_hook (f); |
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347 } |
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348 |
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349 void |
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350 gnu_readline::do_restore_startup_hook (void) |
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351 { |
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352 ::octave_rl_set_startup_hook (previous_startup_hook); |
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353 } |
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354 |
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355 void |
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356 gnu_readline::do_set_event_hook (event_hook_fcn f) |
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357 { |
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358 previous_event_hook = octave_rl_get_event_hook (); |
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359 |
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360 ::octave_rl_set_event_hook (f); |
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361 } |
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362 |
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363 void |
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364 gnu_readline::do_restore_event_hook (void) |
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365 { |
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366 ::octave_rl_set_event_hook (previous_event_hook); |
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367 } |
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368 |
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369 void |
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370 gnu_readline::do_read_init_file (const std::string& file) |
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371 { |
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372 ::octave_rl_read_init_file (file.c_str ()); |
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373 } |
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374 |
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375 bool |
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376 gnu_readline::do_filename_completion_desired (bool arg) |
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377 { |
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378 return ::octave_rl_filename_completion_desired (arg); |
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379 } |
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380 |
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381 int |
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382 gnu_readline::operate_and_get_next (int /* count */, int /* c */) |
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383 { |
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384 // Accept the current line. |
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385 |
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386 command_editor::newline (); |
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387 |
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388 // Find the current line, and find the next line to use. |
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389 |
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390 int x_where = command_history::where (); |
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391 |
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392 int x_length = command_history::length (); |
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393 |
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394 if ((command_history::is_stifled () |
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395 && (x_length >= command_history::max_input_history ())) |
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396 || (x_where >= x_length - 1)) |
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397 command_history::set_mark (x_where); |
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398 else |
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399 command_history::set_mark (x_where + 1); |
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400 |
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401 command_editor::set_startup_hook (command_history::goto_mark); |
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402 |
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403 return 0; |
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404 } |
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405 |
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406 int |
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407 gnu_readline::history_search_backward (int count, int c) |
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408 { |
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409 return octave_rl_history_search_backward (count, c); |
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410 } |
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411 |
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412 int |
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413 gnu_readline::history_search_forward (int count, int c) |
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414 { |
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415 return octave_rl_history_search_forward (count, c); |
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416 } |
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417 |
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418 char * |
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419 gnu_readline::command_generator (const char *text, int state) |
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420 { |
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421 char *retval = 0; |
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422 |
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423 completion_fcn f = command_editor::get_completion_function (); |
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424 |
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425 std::string tmp = f (text, state); |
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426 |
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427 size_t len = tmp.length (); |
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428 |
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429 if (len > 0) |
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430 { |
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431 retval = static_cast<char *> (malloc (len+1)); |
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432 |
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433 strcpy (retval, tmp.c_str ()); |
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434 } |
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435 |
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436 return retval; |
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437 } |
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438 |
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439 char ** |
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440 gnu_readline::command_completer (const char *text, int, int) |
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441 { |
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442 char **matches = 0; |
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443 matches |
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444 = ::octave_rl_completion_matches (text, gnu_readline::command_generator); |
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445 return matches; |
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446 } |
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447 |
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448 #endif |
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449 |
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450 class |
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451 default_command_editor : public command_editor |
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452 { |
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453 public: |
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454 |
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455 default_command_editor (void) |
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456 : command_editor (), input_stream (stdin), output_stream (stdout) { } |
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457 |
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458 ~default_command_editor (void) { } |
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459 |
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3504
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460 std::string do_readline (const std::string& prompt, bool& eof); |
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461 |
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462 void do_set_input_stream (FILE *f); |
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463 |
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464 FILE *do_get_input_stream (void); |
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|
465 |
|
|
466 void do_set_output_stream (FILE *f); |
|
|
467 |
|
|
468 FILE *do_get_output_stream (void); |
|
|
469 |
|
3504
|
470 void do_insert_text (const std::string&); |
|
2926
|
471 |
|
|
472 void do_newline (void); |
|
|
473 |
|
|
474 private: |
|
|
475 |
|
|
476 FILE *input_stream; |
|
|
477 |
|
|
478 FILE *output_stream; |
|
|
479 }; |
|
|
480 |
|
3504
|
481 std::string |
|
|
482 default_command_editor::do_readline (const std::string& prompt, bool& eof) |
|
2926
|
483 { |
|
|
484 fprintf (output_stream, prompt.c_str ()); |
|
|
485 fflush (output_stream); |
|
|
486 |
|
4527
|
487 return octave_fgetl (input_stream, eof); |
|
2926
|
488 } |
|
|
489 |
|
|
490 void |
|
|
491 default_command_editor::do_set_input_stream (FILE *f) |
|
|
492 { |
|
|
493 input_stream = f; |
|
|
494 } |
|
|
495 |
|
|
496 FILE * |
|
|
497 default_command_editor::do_get_input_stream (void) |
|
|
498 { |
|
|
499 return input_stream; |
|
|
500 } |
|
|
501 |
|
|
502 void |
|
|
503 default_command_editor::do_set_output_stream (FILE *f) |
|
|
504 { |
|
|
505 output_stream = f; |
|
|
506 } |
|
|
507 |
|
|
508 FILE * |
|
|
509 default_command_editor::do_get_output_stream (void) |
|
|
510 { |
|
|
511 return output_stream; |
|
|
512 } |
|
|
513 |
|
|
514 void |
|
3504
|
515 default_command_editor::do_insert_text (const std::string&) |
|
2926
|
516 { |
|
|
517 // XXX FIXME XXX |
|
|
518 } |
|
|
519 |
|
|
520 void |
|
|
521 default_command_editor::do_newline (void) |
|
|
522 { |
|
|
523 // XXX FIXME XXX |
|
|
524 } |
|
|
525 |
|
|
526 bool |
|
|
527 command_editor::instance_ok (void) |
|
|
528 { |
|
|
529 bool retval = true; |
|
|
530 |
|
|
531 if (! instance) |
|
|
532 make_command_editor (); |
|
|
533 |
|
|
534 if (! instance) |
|
|
535 { |
|
2941
|
536 current_liboctave_error_handler |
|
2926
|
537 ("unable to create command history object!"); |
|
|
538 |
|
|
539 retval = false; |
|
|
540 } |
|
|
541 |
|
|
542 return retval; |
|
|
543 } |
|
|
544 |
|
|
545 void |
|
|
546 command_editor::make_command_editor (void) |
|
|
547 { |
|
|
548 #if defined (USE_READLINE) |
|
|
549 instance = new gnu_readline (); |
|
|
550 #else |
|
|
551 instance = new default_command_editor (); |
|
|
552 #endif |
|
|
553 } |
|
|
554 |
|
|
555 void |
|
3504
|
556 command_editor::set_name (const std::string& n) |
|
2926
|
557 { |
|
|
558 if (instance_ok ()) |
|
|
559 instance->do_set_name (n); |
|
|
560 } |
|
|
561 |
|
3504
|
562 std::string |
|
|
563 command_editor::readline (const std::string& prompt) |
|
2926
|
564 { |
|
3219
|
565 bool eof; |
|
|
566 |
|
|
567 return readline (prompt, eof); |
|
|
568 } |
|
|
569 |
|
3504
|
570 std::string |
|
|
571 command_editor::readline (const std::string& prompt, bool& eof) |
|
3219
|
572 { |
|
2926
|
573 return (instance_ok ()) |
|
3504
|
574 ? instance->do_readline (prompt, eof) : std::string (); |
|
2926
|
575 } |
|
|
576 |
|
|
577 void |
|
|
578 command_editor::set_input_stream (FILE *f) |
|
|
579 { |
|
|
580 if (instance_ok ()) |
|
|
581 instance->do_set_input_stream (f); |
|
|
582 } |
|
|
583 |
|
|
584 FILE * |
|
|
585 command_editor::get_input_stream (void) |
|
|
586 { |
|
|
587 return (instance_ok ()) |
|
|
588 ? instance->do_get_input_stream () : 0; |
|
|
589 } |
|
|
590 |
|
|
591 void |
|
|
592 command_editor::set_output_stream (FILE *f) |
|
|
593 { |
|
|
594 if (instance_ok ()) |
|
|
595 instance->do_set_output_stream (f); |
|
|
596 } |
|
|
597 |
|
|
598 FILE * |
|
|
599 command_editor::get_output_stream (void) |
|
|
600 { |
|
|
601 return (instance_ok ()) |
|
|
602 ? instance->do_get_output_stream () : 0; |
|
|
603 } |
|
|
604 |
|
|
605 int |
|
|
606 command_editor::terminal_rows (void) |
|
|
607 { |
|
|
608 return (instance_ok ()) |
|
|
609 ? instance->do_terminal_rows () : -1; |
|
|
610 } |
|
|
611 |
|
|
612 int |
|
|
613 command_editor::terminal_cols (void) |
|
|
614 { |
|
|
615 return (instance_ok ()) |
|
|
616 ? instance->do_terminal_cols () : -1; |
|
|
617 } |
|
|
618 |
|
|
619 void |
|
|
620 command_editor::clear_screen (void) |
|
|
621 { |
|
|
622 if (instance_ok ()) |
|
|
623 instance->do_clear_screen (); |
|
|
624 } |
|
|
625 |
|
3281
|
626 void |
|
|
627 command_editor::resize_terminal (void) |
|
|
628 { |
|
|
629 if (instance_ok ()) |
|
|
630 instance->do_resize_terminal (); |
|
|
631 } |
|
|
632 |
|
3504
|
633 std::string |
|
|
634 command_editor::decode_prompt_string (const std::string& s) |
|
2926
|
635 { |
|
|
636 return (instance_ok ()) |
|
3504
|
637 ? instance->do_decode_prompt_string (s) : std::string (); |
|
2926
|
638 } |
|
|
639 |
|
|
640 int |
|
|
641 command_editor::current_command_number (void) |
|
|
642 { |
|
|
643 return (instance_ok ()) |
|
|
644 ? instance->command_number : 0; |
|
|
645 } |
|
|
646 |
|
|
647 void |
|
|
648 command_editor::reset_current_command_number (int n) |
|
|
649 { |
|
|
650 if (instance_ok ()) |
|
|
651 instance->command_number = n; |
|
|
652 } |
|
|
653 |
|
|
654 void |
|
2967
|
655 command_editor::increment_current_command_number (void) |
|
|
656 { |
|
|
657 if (instance_ok ()) |
|
|
658 instance->command_number++; |
|
|
659 } |
|
|
660 |
|
|
661 void |
|
2926
|
662 command_editor::restore_terminal_state (void) |
|
|
663 { |
|
|
664 if (instance_ok ()) |
|
|
665 instance->do_restore_terminal_state (); |
|
|
666 } |
|
|
667 |
|
|
668 void |
|
|
669 command_editor::blink_matching_paren (bool flag) |
|
|
670 { |
|
|
671 if (instance_ok ()) |
|
|
672 instance->do_blink_matching_paren (flag); |
|
|
673 } |
|
|
674 |
|
|
675 void |
|
3933
|
676 command_editor::set_basic_word_break_characters (const std::string& s) |
|
|
677 { |
|
|
678 if (instance_ok ()) |
|
|
679 instance->do_set_basic_word_break_characters (s); |
|
|
680 } |
|
|
681 |
|
|
682 void |
|
|
683 command_editor::set_completer_word_break_characters (const std::string& s) |
|
|
684 { |
|
|
685 if (instance_ok ()) |
|
|
686 instance->do_set_completer_word_break_characters (s); |
|
|
687 } |
|
|
688 |
|
|
689 void |
|
3504
|
690 command_editor::set_basic_quote_characters (const std::string& s) |
|
2926
|
691 { |
|
|
692 if (instance_ok ()) |
|
3004
|
693 instance->do_set_basic_quote_characters (s); |
|
2926
|
694 } |
|
|
695 |
|
|
696 void |
|
|
697 command_editor::set_completion_append_character (char c) |
|
|
698 { |
|
|
699 if (instance_ok ()) |
|
|
700 instance->do_set_completion_append_character (c); |
|
|
701 } |
|
|
702 |
|
|
703 void |
|
2941
|
704 command_editor::set_completion_function (completion_fcn f) |
|
2926
|
705 { |
|
|
706 if (instance_ok ()) |
|
2941
|
707 instance->do_set_completion_function (f); |
|
|
708 } |
|
|
709 |
|
|
710 command_editor::completion_fcn |
|
|
711 command_editor::get_completion_function (void) |
|
|
712 { |
|
|
713 return (instance_ok ()) |
|
|
714 ? instance->do_get_completion_function () : 0; |
|
2926
|
715 } |
|
|
716 |
|
|
717 void |
|
3504
|
718 command_editor::insert_text (const std::string& text) |
|
2926
|
719 { |
|
|
720 if (instance_ok ()) |
|
|
721 instance->do_insert_text (text); |
|
|
722 } |
|
|
723 |
|
|
724 void |
|
|
725 command_editor::newline (void) |
|
|
726 { |
|
|
727 if (instance_ok ()) |
|
|
728 instance->do_newline (); |
|
|
729 } |
|
|
730 |
|
|
731 void |
|
|
732 command_editor::clear_undo_list (void) |
|
|
733 { |
|
|
734 if (instance_ok ()) |
|
|
735 instance->do_clear_undo_list (); |
|
|
736 } |
|
|
737 |
|
|
738 void |
|
3519
|
739 command_editor::set_startup_hook (startup_hook_fcn f) |
|
2926
|
740 { |
|
|
741 if (instance_ok ()) |
|
|
742 instance->do_set_startup_hook (f); |
|
|
743 } |
|
|
744 |
|
|
745 void |
|
|
746 command_editor::restore_startup_hook (void) |
|
|
747 { |
|
|
748 if (instance_ok ()) |
|
|
749 instance->do_restore_startup_hook (); |
|
|
750 } |
|
|
751 |
|
3189
|
752 void |
|
3519
|
753 command_editor::set_event_hook (event_hook_fcn f) |
|
3215
|
754 { |
|
|
755 if (instance_ok ()) |
|
|
756 instance->do_set_event_hook (f); |
|
|
757 } |
|
|
758 |
|
|
759 void |
|
|
760 command_editor::restore_event_hook (void) |
|
|
761 { |
|
|
762 if (instance_ok ()) |
|
|
763 instance->do_restore_event_hook (); |
|
|
764 } |
|
|
765 |
|
|
766 void |
|
3504
|
767 command_editor::read_init_file (const std::string& file) |
|
3189
|
768 { |
|
|
769 if (instance_ok ()) |
|
|
770 instance->do_read_init_file (file); |
|
|
771 } |
|
|
772 |
|
4143
|
773 bool |
|
|
774 command_editor::filename_completion_desired (bool arg) |
|
|
775 { |
|
|
776 return (instance_ok ()) |
|
|
777 ? instance->do_filename_completion_desired (arg) : false; |
|
|
778 } |
|
|
779 |
|
2926
|
780 // Return a string which will be printed as a prompt. The string may |
|
|
781 // contain special characters which are decoded as follows: |
|
|
782 // |
|
|
783 // \t the time |
|
|
784 // \d the date |
|
|
785 // \n CRLF |
|
|
786 // \s the name of the shell (program) |
|
|
787 // \w the current working directory |
|
|
788 // \W the last element of PWD |
|
|
789 // \u your username |
|
|
790 // \h the hostname |
|
|
791 // \# the command number of this command |
|
|
792 // \! the history number of this command |
|
|
793 // \$ a $ or a # if you are root |
|
|
794 // \<octal> character code in octal |
|
|
795 // \\ a backslash |
|
|
796 |
|
3504
|
797 std::string |
|
|
798 command_editor::do_decode_prompt_string (const std::string& s) |
|
2926
|
799 { |
|
3504
|
800 std::string result; |
|
|
801 std::string temp; |
|
2926
|
802 size_t i = 0; |
|
|
803 size_t slen = s.length (); |
|
|
804 int c; |
|
|
805 |
|
|
806 while (i < slen) |
|
|
807 { |
|
|
808 c = s[i]; |
|
|
809 |
|
|
810 i++; |
|
|
811 |
|
|
812 if (c == '\\') |
|
|
813 { |
|
|
814 c = s[i]; |
|
|
815 |
|
|
816 switch (c) |
|
|
817 { |
|
|
818 case '0': |
|
|
819 case '1': |
|
|
820 case '2': |
|
|
821 case '3': |
|
|
822 case '4': |
|
|
823 case '5': |
|
|
824 case '6': |
|
|
825 case '7': |
|
|
826 // Maybe convert an octal number. |
|
|
827 { |
|
|
828 int n = read_octal (s.substr (i, 3)); |
|
|
829 |
|
|
830 temp = "\\"; |
|
|
831 |
|
|
832 if (n != -1) |
|
|
833 { |
|
|
834 i += 3; |
|
|
835 temp[0] = n; |
|
|
836 } |
|
|
837 |
|
|
838 c = 0; |
|
|
839 goto add_string; |
|
|
840 } |
|
|
841 |
|
|
842 case 't': |
|
|
843 case 'd': |
|
|
844 // Make the current time/date into a string. |
|
|
845 { |
|
3260
|
846 octave_time now; |
|
2926
|
847 |
|
3260
|
848 temp = now.ctime (); |
|
2926
|
849 |
|
|
850 if (c == 't') |
|
|
851 { |
|
|
852 temp = temp.substr (11); |
|
|
853 temp.resize (8); |
|
|
854 } |
|
|
855 else |
|
|
856 temp.resize (10); |
|
|
857 |
|
|
858 goto add_string; |
|
|
859 } |
|
|
860 |
|
|
861 case 'n': |
|
|
862 { |
|
|
863 temp = newline_chars (); |
|
|
864 |
|
|
865 goto add_string; |
|
|
866 } |
|
|
867 |
|
|
868 case 's': |
|
|
869 { |
|
|
870 temp = octave_env::get_program_name (); |
|
|
871 temp = octave_env::base_pathname (temp); |
|
|
872 |
|
|
873 goto add_string; |
|
|
874 } |
|
|
875 |
|
|
876 case 'w': |
|
|
877 case 'W': |
|
|
878 { |
|
|
879 temp = octave_env::getcwd (); |
|
|
880 |
|
|
881 if (c == 'W') |
|
|
882 { |
|
|
883 size_t pos = temp.rfind ('/'); |
|
|
884 |
|
|
885 if (pos != NPOS && pos != 0) |
|
|
886 temp = temp.substr (pos + 1); |
|
|
887 } |
|
|
888 else |
|
|
889 temp = octave_env::polite_directory_format (temp); |
|
|
890 |
|
|
891 goto add_string; |
|
|
892 } |
|
|
893 |
|
|
894 case 'u': |
|
|
895 { |
|
|
896 temp = octave_env::get_user_name (); |
|
|
897 |
|
|
898 goto add_string; |
|
|
899 } |
|
|
900 |
|
|
901 case 'H': |
|
|
902 { |
|
|
903 temp = octave_env::get_host_name (); |
|
|
904 |
|
|
905 goto add_string; |
|
|
906 } |
|
|
907 |
|
|
908 case 'h': |
|
|
909 { |
|
|
910 temp = octave_env::get_host_name (); |
|
|
911 |
|
|
912 size_t pos = temp.find ('.'); |
|
|
913 |
|
|
914 if (pos != NPOS) |
|
|
915 temp.resize (pos); |
|
|
916 |
|
|
917 goto add_string; |
|
|
918 } |
|
|
919 |
|
|
920 case '#': |
|
|
921 { |
|
|
922 char number_buffer[128]; |
|
|
923 sprintf (number_buffer, "%d", command_number); |
|
|
924 temp = number_buffer; |
|
|
925 |
|
|
926 goto add_string; |
|
|
927 } |
|
|
928 |
|
|
929 case '!': |
|
|
930 { |
|
|
931 char number_buffer[128]; |
|
|
932 int num = command_history::current_number (); |
|
|
933 if (num > 0) |
|
|
934 sprintf (number_buffer, "%d", num); |
|
|
935 else |
|
|
936 strcpy (number_buffer, "!"); |
|
|
937 temp = number_buffer; |
|
|
938 |
|
|
939 goto add_string; |
|
|
940 } |
|
|
941 |
|
|
942 case '$': |
|
|
943 { |
|
4062
|
944 #if defined (HAVE_GETEUID) |
|
2926
|
945 temp = (::geteuid () == 0 ? "#" : "$"); |
|
4062
|
946 #else |
|
|
947 temp = "$"; |
|
|
948 #endif |
|
2926
|
949 |
|
|
950 goto add_string; |
|
|
951 } |
|
|
952 |
|
|
953 #if defined (USE_READLINE) |
|
|
954 case '[': |
|
|
955 case ']': |
|
|
956 { |
|
|
957 temp.resize (2); |
|
|
958 |
|
|
959 temp[0] = '\001'; |
|
|
960 temp[1] = ((c == '[') |
|
3519
|
961 ? ::octave_rl_prompt_start_ignore () |
|
|
962 : ::octave_rl_prompt_end_ignore ()); |
|
2926
|
963 |
|
|
964 goto add_string; |
|
|
965 } |
|
|
966 #endif |
|
|
967 |
|
|
968 case '\\': |
|
|
969 { |
|
|
970 temp = "\\"; |
|
|
971 |
|
|
972 goto add_string; |
|
|
973 } |
|
|
974 |
|
|
975 default: |
|
|
976 { |
|
|
977 temp = "\\ "; |
|
|
978 temp[1] = c; |
|
|
979 |
|
|
980 goto add_string; |
|
|
981 } |
|
|
982 |
|
|
983 add_string: |
|
|
984 { |
|
|
985 if (c) |
|
|
986 i++; |
|
|
987 |
|
|
988 result.append (temp); |
|
|
989 |
|
|
990 break; |
|
|
991 } |
|
|
992 } |
|
|
993 } |
|
|
994 else |
|
|
995 result += c; |
|
|
996 } |
|
|
997 |
|
|
998 return result; |
|
|
999 } |
|
|
1000 |
|
|
1001 // Return the octal number parsed from STRING, or -1 to indicate that |
|
|
1002 // the string contained a bad number. |
|
|
1003 |
|
|
1004 int |
|
3504
|
1005 command_editor::read_octal (const std::string& s) |
|
2926
|
1006 { |
|
|
1007 int result = 0; |
|
|
1008 int digits = 0; |
|
|
1009 |
|
|
1010 size_t i = 0; |
|
|
1011 size_t slen = s.length (); |
|
|
1012 |
|
|
1013 while (i < slen && s[i] >= '0' && s[i] < '8') |
|
|
1014 { |
|
|
1015 digits++; |
|
|
1016 result = (result * 8) + s[i] - '0'; |
|
|
1017 i++; |
|
|
1018 } |
|
|
1019 |
|
|
1020 if (! digits || result > 0777 || i < slen) |
|
|
1021 result = -1; |
|
|
1022 |
|
|
1023 return result; |
|
|
1024 } |
|
|
1025 |
|
|
1026 void |
|
|
1027 command_editor::error (int err_num) |
|
|
1028 { |
|
2941
|
1029 current_liboctave_error_handler ("%s", strerror (err_num)); |
|
2926
|
1030 } |
|
|
1031 |
|
|
1032 void |
|
3504
|
1033 command_editor::error (const std::string& s) |
|
2926
|
1034 { |
|
2941
|
1035 current_liboctave_error_handler ("%s", s.c_str ()); |
|
2926
|
1036 } |
|
|
1037 |
|
|
1038 /* |
|
|
1039 ;;; Local Variables: *** |
|
|
1040 ;;; mode: C++ *** |
|
|
1041 ;;; End: *** |
|
|
1042 */ |
