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