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