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1 /* |
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2 |
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2847
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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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2939
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23 // Get command input interactively or from files. |
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24 |
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240
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25 #ifdef HAVE_CONFIG_H |
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1192
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26 #include <config.h> |
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1
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27 #endif |
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28 |
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1343
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29 #include <ctime> |
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30 #include <cstdio> |
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31 #include <cstdlib> |
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32 #include <cstring> |
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33 #include <cassert> |
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34 #include <csignal> |
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35 |
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1728
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36 #include <string> |
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37 |
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1349
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38 #include <iostream.h> |
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39 |
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1350
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40 #ifdef HAVE_UNISTD_H |
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2442
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41 #ifdef HAVE_SYS_TYPES_H |
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529
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42 #include <sys/types.h> |
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2442
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43 #endif |
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529
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44 #include <unistd.h> |
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45 #endif |
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1343
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46 |
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2927
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47 #include "cmd-edit.h" |
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1755
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48 #include "str-vec.h" |
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49 |
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1352
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50 #include "defun.h" |
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51 #include "dirfns.h" |
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1
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52 #include "error.h" |
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2181
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53 #include "gripes.h" |
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3016
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54 #include "help.h" |
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1
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55 #include "input.h" |
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1352
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56 #include "oct-map.h" |
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1742
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57 #include "oct-hist.h" |
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1670
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58 #include "toplev.h" |
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1755
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59 #include "oct-obj.h" |
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1
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60 #include "pager.h" |
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529
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61 #include "parse.h" |
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1352
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62 #include "pathlen.h" |
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1755
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63 #include "pt-const.h" |
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1352
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64 #include "sighandlers.h" |
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65 #include "symtab.h" |
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1114
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66 #include "sysdep.h" |
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1352
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67 #include "utils.h" |
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68 #include "variables.h" |
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529
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69 |
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2181
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70 // Primary prompt string. |
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71 static string Vps1; |
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72 |
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73 // Secondary prompt string. |
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74 static string Vps2; |
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75 |
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76 // String printed before echoed input (enabled by --echo-input). |
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77 string Vps4; |
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78 |
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3019
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79 // Echo commands as they are executed? |
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80 // |
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81 // 1 ==> echo commands read from script files |
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82 // 2 ==> echo commands from functions |
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83 // 4 ==> echo commands read from command line |
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84 // |
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85 // more than one state can be active at once. |
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86 int Vecho_executing_commands; |
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87 |
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2181
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88 // Character to append after successful command-line completion attempts. |
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89 static char Vcompletion_append_char; |
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90 |
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1
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91 // Global pointer for eval(). |
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1755
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92 string current_eval_string; |
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1
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93 |
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3019
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94 // TRUE means get input from current_eval_string. |
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95 bool get_input_from_eval_string = false; |
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1
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96 |
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3019
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97 // TRUE means we're parsing a function file. |
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98 bool reading_fcn_file = false; |
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99 |
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338
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100 // Simple name of function file we are reading. |
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101 string curr_fcn_file_name; |
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1606
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102 |
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103 // Full name of file we are reading. |
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104 string curr_fcn_file_full_name; |
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1
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105 |
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3019
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106 // TRUE means we're parsing a script file. |
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107 bool reading_script_file = false; |
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1
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108 |
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109 // If we are reading from an M-file, this is it. |
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529
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110 FILE *ff_instream = 0; |
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1
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111 |
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3019
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112 // TRUE means this is an interactive shell. |
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113 bool interactive = false; |
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114 |
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3019
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115 // TRUE means the user forced this shell to be interactive (-i). |
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116 bool forced_interactive = false; |
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117 |
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118 // Should we issue a prompt? |
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119 int promptflag = 1; |
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120 |
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121 // The current line of input, from wherever. |
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1755
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122 string current_input_line; |
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1
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123 |
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2299
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124 // TRUE after a call to completion_matches(). |
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125 bool octave_completion_matches_called = false; |
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126 |
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1044
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127 static void |
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128 do_input_echo (const string& input_string) |
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129 { |
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1588
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130 int do_echo = reading_script_file ? |
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2205
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131 (Vecho_executing_commands & ECHO_SCRIPTS) |
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132 : (Vecho_executing_commands & ECHO_CMD_LINE) && ! forced_interactive; |
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133 |
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134 if (do_echo) |
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1044
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135 { |
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1403
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136 if (forced_interactive) |
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137 { |
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1755
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138 if (promptflag > 0) |
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2927
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139 octave_stdout << command_editor::decode_prompt_string (Vps1); |
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1755
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140 else |
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2927
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141 octave_stdout << command_editor::decode_prompt_string (Vps2); |
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1403
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142 } |
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143 else |
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2927
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144 octave_stdout << command_editor::decode_prompt_string (Vps4); |
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1044
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145 |
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1755
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146 if (! input_string.empty ()) |
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1044
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147 { |
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2095
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148 octave_stdout << input_string; |
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149 |
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150 if (input_string[input_string.length () - 1] != '\n') |
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2095
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151 octave_stdout << "\n"; |
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1044
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152 } |
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153 } |
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154 } |
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155 |
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156 string |
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157 gnu_readline (const string& s, bool force_readline) |
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1822
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158 { |
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2927
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159 string retval; |
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1822
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160 |
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2927
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161 if (line_editing || force_readline) |
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1822
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162 { |
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2927
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163 retval = command_editor::readline (s); |
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1898
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164 |
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2927
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165 if (retval.empty ()) |
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166 retval = "\n"; |
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1822
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167 } |
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168 else |
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169 { |
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2927
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170 if (! s.empty () && (interactive || forced_interactive)) |
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2618
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171 { |
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2927
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172 FILE *stream = command_editor::get_output_stream (); |
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173 |
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174 fprintf (stream, s.c_str ()); |
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175 fflush (stream); |
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2618
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176 } |
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1822
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177 |
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2927
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178 FILE *curr_stream = command_editor::get_input_stream (); |
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179 |
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1822
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180 if (reading_fcn_file || reading_script_file) |
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181 curr_stream = ff_instream; |
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182 |
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2927
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183 retval = octave_fgets (curr_stream); |
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1822
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184 } |
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185 |
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186 return retval; |
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187 } |
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581
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188 |
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2927
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189 static string |
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1
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190 octave_gets (void) |
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191 { |
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2927
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192 string retval; |
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1
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193 |
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1822
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194 if ((interactive || forced_interactive) |
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195 && (! (reading_fcn_file || reading_script_file))) |
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1
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196 { |
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2927
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197 string ps = (promptflag > 0) ? Vps1 : Vps2; |
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198 |
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199 string prompt = command_editor::decode_prompt_string (ps); |
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1
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200 |
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2618
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201 pipe_handler_error_count = 0; |
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202 |
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203 flush_octave_stdout (); |
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1
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204 |
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2095
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205 octave_diary << prompt; |
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581
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206 |
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207 retval = gnu_readline (prompt); |
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1
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208 } |
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209 else |
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1822
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210 retval = gnu_readline (""); |
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1
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211 |
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212 current_input_line = retval; |
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1
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213 |
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1822
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214 if (! current_input_line.empty ()) |
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1
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215 { |
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1799
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216 if (! input_from_startup_file) |
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217 command_history::add (current_input_line); |
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218 |
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219 octave_diary << current_input_line; |
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220 |
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221 do_input_echo (current_input_line); |
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1
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222 } |
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581
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223 |
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224 octave_diary << "\n"; |
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225 |
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1822
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226 return retval; |
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1
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227 } |
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228 |
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581
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229 // Read a line from the input stream. |
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230 |
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231 static string |
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1822
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232 get_user_input (void) |
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1
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233 { |
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2927
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234 string retval; |
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1
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235 |
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236 if (get_input_from_eval_string) |
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237 { |
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2927
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238 retval = current_eval_string; |
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1822
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239 |
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2927
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240 size_t len = retval.length (); |
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1822
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241 |
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2927
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242 if (retval[len-1] != '\n') |
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243 retval.append ("\n"); |
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1822
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244 } |
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245 else |
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246 retval = octave_gets (); |
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247 |
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2927
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248 current_input_line = retval; |
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1822
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249 |
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2114
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250 if (! get_input_from_eval_string) |
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251 input_line_number++; |
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1822
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252 |
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253 return retval; |
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254 } |
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255 |
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256 int |
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257 octave_read (char *buf, unsigned max_size) |
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258 { |
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2927
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259 // XXX FIXME XXX -- is this a safe way to buffer the input? |
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260 |
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261 static string input_buf; |
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262 static const char *pos = 0; |
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263 static size_t chars_left = 0; |
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1822
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264 |
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265 int status = 0; |
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266 |
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2927
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267 if (input_buf.empty ()) |
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1822
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268 { |
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2927
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269 pos = 0; |
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270 |
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271 input_buf = get_user_input (); |
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1822
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272 |
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2927
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273 chars_left = input_buf.length (); |
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274 |
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275 pos = input_buf.c_str (); |
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1822
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276 } |
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277 |
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278 if (chars_left > 0) |
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279 { |
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280 buf[0] = '\0'; |
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281 |
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2927
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282 size_t len = max_size > 2 ? max_size - 2 : 0; |
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1822
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283 |
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2927
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284 assert (len > 0); |
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285 |
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286 strncpy (buf, pos, len); |
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1822
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287 |
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288 if (chars_left > len) |
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1
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289 { |
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1822
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290 chars_left -= len; |
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291 |
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2927
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292 pos += len; |
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1822
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293 |
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294 buf[len] = '\0'; |
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295 |
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1
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296 status = len; |
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297 } |
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298 else |
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299 { |
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2927
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300 input_buf = ""; |
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1755
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301 |
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1822
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302 len = chars_left; |
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303 |
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304 if (buf[len-1] != '\n') |
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305 buf[len++] = '\n'; |
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1
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306 |
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1822
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307 buf[len] = '\0'; |
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1755
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308 |
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1822
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309 status = len; |
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1
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310 } |
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1044
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311 } |
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1822
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312 else if (chars_left == 0) |
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2862
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313 { |
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2927
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314 input_buf = ""; |
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2862
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315 |
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316 status = 0; |
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317 } |
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1822
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318 else |
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319 status = -1; |
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1044
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320 |
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1
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321 return status; |
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322 } |
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323 |
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581
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324 // Fix things up so that input can come from file `name', printing a |
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325 // warning if the file doesn't exist. |
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326 |
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1
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327 FILE * |
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1750
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328 get_input_from_file (const string& name, int warn) |
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1
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329 { |
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529
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330 FILE *instream = 0; |
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1
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331 |
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1750
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332 if (name.length () > 0) |
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333 instream = fopen (name.c_str (), "r"); |
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1
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334 |
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529
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335 if (! instream && warn) |
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1750
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336 warning ("%s: no such file or directory", name.c_str ()); |
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1
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337 |
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338
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338 if (reading_fcn_file || reading_script_file) |
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339
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339 ff_instream = instream; |
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1
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340 else |
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2927
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341 command_editor::set_input_stream (instream); |
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1
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342 |
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343 return instream; |
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344 } |
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345 |
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581
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346 // Fix things up so that input can come from the standard input. This |
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347 // may need to become much more complicated, which is why it's in a |
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348 // separate function. |
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349 |
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1
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350 FILE * |
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351 get_input_from_stdin (void) |
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352 { |
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2927
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353 command_editor::set_input_stream (stdin); |
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354 return command_editor::get_input_stream (); |
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1
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355 } |
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356 |
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2921
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357 // XXX FIXME XXX -- make this generate file names when appropriate. |
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358 |
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2247
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359 static string_vector |
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2921
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360 generate_possible_completions (const string& text, string& prefix, |
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361 string& hint) |
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1280
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362 { |
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2247
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363 string_vector names; |
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1280
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364 |
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2921
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365 prefix = ""; |
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1280
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366 |
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2921
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367 if (! text.empty () && text != "." && text.rfind ('.') != NPOS) |
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1430
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368 names = generate_struct_completions (text, prefix, hint); |
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369 else |
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2247
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370 names = make_name_list (); |
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1280
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371 |
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2944
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372 // Sort and remove duplicates. |
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2348
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373 |
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2944
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374 names.qsort (true); |
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2348
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375 |
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1280
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376 return names; |
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377 } |
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378 |
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2944
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379 static string |
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380 generate_completion (const string& text, int state) |
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1280
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381 { |
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2944
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382 string retval; |
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383 |
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2921
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384 static string prefix; |
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385 static string hint; |
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1280
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386 |
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2921
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387 static size_t prefix_len = 0; |
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388 static size_t hint_len = 0; |
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1280
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389 |
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1
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390 static int list_index = 0; |
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2921
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391 static int name_list_len = 0; |
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2247
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392 static string_vector name_list; |
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1
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393 |
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1280
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394 static int matches = 0; |
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1
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395 |
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396 if (state == 0) |
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397 { |
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398 list_index = 0; |
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399 |
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2921
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400 prefix = ""; |
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1280
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401 |
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2921
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402 hint = text; |
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1280
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403 |
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404 name_list = generate_possible_completions (text, prefix, hint); |
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405 |
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2921
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406 name_list_len = name_list.length (); |
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407 |
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408 prefix_len = prefix.length (); |
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1280
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409 |
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2921
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410 hint_len = hint.length (); |
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1280
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411 |
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412 matches = 0; |
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2247
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413 |
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2921
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414 for (int i = 0; i < name_list_len; i++) |
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415 if (! name_list[i].compare (hint, 0, hint_len)) |
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2247
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416 matches++; |
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1
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417 } |
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418 |
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2921
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419 if (name_list_len > 0 && matches > 0) |
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1
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420 { |
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2921
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421 while (list_index < name_list_len) |
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244
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422 { |
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2921
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423 string name = name_list[list_index]; |
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2247
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424 |
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1280
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425 list_index++; |
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2247
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426 |
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2921
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427 if (! name.compare (hint, 0, hint_len)) |
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1280
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428 { |
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2944
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429 if (! prefix.empty ()) |
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430 retval = prefix + "." + name; |
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431 else |
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432 retval = name; |
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1280
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433 |
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2944
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434 if (matches == 1 && looks_like_struct (retval)) |
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2927
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435 command_editor::set_completion_append_character ('.'); |
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1280
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436 else |
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2927
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437 command_editor::set_completion_append_character |
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438 (Vcompletion_append_char); |
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1280
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439 |
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2944
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440 break; |
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1280
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441 } |
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244
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442 } |
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1
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443 } |
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444 |
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2944
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445 return retval; |
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1
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446 } |
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447 |
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2927
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448 void |
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449 initialize_command_input (void) |
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450 { |
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451 // If we are using readline, this allows conditional parsing of the |
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452 // .inputrc file. |
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269
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453 |
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2927
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454 command_editor::set_name ("Octave"); |
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1358
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455 |
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3004
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456 command_editor::set_basic_quote_characters ("\""); |
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2944
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457 |
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458 command_editor::set_completion_function (generate_completion); |
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269
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459 } |
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460 |
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2927
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461 static bool |
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462 match_sans_spaces (const string& standard, const string& test) |
|
269
|
463 { |
|
2927
|
464 string tmp = test; |
|
269
|
465 |
|
2927
|
466 size_t beg = test.find_first_not_of (" \t"); |
|
|
467 size_t end = test.find_last_not_of (" \t"); |
|
|
468 size_t len = beg - end + 1; |
|
1
|
469 |
|
2927
|
470 return test.compare (standard, beg, len) == 0; |
|
529
|
471 } |
|
|
472 |
|
581
|
473 // If the user simply hits return, this will produce an empty matrix. |
|
|
474 |
|
2086
|
475 static octave_value_list |
|
3006
|
476 get_user_input (const octave_value_list& args, bool debug = false) |
|
529
|
477 { |
|
2086
|
478 octave_value retval; |
|
529
|
479 |
|
|
480 int nargin = args.length (); |
|
|
481 |
|
|
482 int read_as_string = 0; |
|
|
483 |
|
712
|
484 if (nargin == 2) |
|
529
|
485 read_as_string++; |
|
|
486 |
|
1761
|
487 string prompt ("debug> "); |
|
|
488 |
|
712
|
489 if (nargin > 0) |
|
529
|
490 { |
|
1761
|
491 prompt = args(0).string_value (); |
|
636
|
492 |
|
|
493 if (error_state) |
|
|
494 { |
|
|
495 error ("input: unrecognized argument"); |
|
|
496 return retval; |
|
|
497 } |
|
529
|
498 } |
|
|
499 |
|
|
500 again: |
|
|
501 |
|
2095
|
502 flush_octave_stdout (); |
|
529
|
503 |
|
2927
|
504 string input_buf = gnu_readline (prompt.c_str (), true); |
|
529
|
505 |
|
2927
|
506 if (! input_buf.empty ()) |
|
529
|
507 { |
|
1799
|
508 if (! input_from_startup_file) |
|
2927
|
509 command_history::add (input_buf); |
|
529
|
510 |
|
2927
|
511 size_t len = input_buf.length (); |
|
529
|
512 |
|
|
513 if (len < 1) |
|
|
514 { |
|
|
515 if (debug) |
|
|
516 goto again; |
|
|
517 else |
|
963
|
518 { |
|
|
519 if (read_as_string) |
|
|
520 return ""; |
|
|
521 else |
|
|
522 return Matrix (); |
|
|
523 } |
|
529
|
524 } |
|
|
525 |
|
|
526 if (match_sans_spaces ("exit", input_buf) |
|
|
527 || match_sans_spaces ("quit", input_buf) |
|
|
528 || match_sans_spaces ("return", input_buf)) |
|
963
|
529 { |
|
|
530 return retval; |
|
|
531 } |
|
529
|
532 else if (read_as_string) |
|
963
|
533 { |
|
|
534 retval = input_buf; |
|
|
535 } |
|
529
|
536 else |
|
|
537 { |
|
|
538 int parse_status = 0; |
|
2900
|
539 |
|
2896
|
540 retval = eval_string (input_buf, true, parse_status); |
|
2900
|
541 |
|
581
|
542 if (retval.is_defined ()) |
|
|
543 { |
|
|
544 if (debug) |
|
2900
|
545 retval.print (octave_stdout); |
|
581
|
546 } |
|
|
547 else |
|
963
|
548 retval = Matrix (); |
|
529
|
549 } |
|
|
550 } |
|
|
551 else |
|
|
552 error ("input: reading user-input failed!"); |
|
|
553 |
|
|
554 if (debug) |
|
|
555 goto again; |
|
|
556 |
|
|
557 return retval; |
|
|
558 } |
|
|
559 |
|
1957
|
560 DEFUN (input, args, , |
|
529
|
561 "input (PROMPT [, S])\n\ |
|
|
562 \n\ |
|
2802
|
563 Prompt user for input. If the second argument is present, return\n\ |
|
529
|
564 value as a string.") |
|
|
565 { |
|
2086
|
566 octave_value_list retval; |
|
529
|
567 |
|
|
568 int nargin = args.length (); |
|
|
569 |
|
712
|
570 if (nargin == 1 || nargin == 2) |
|
1488
|
571 retval = get_user_input (args); |
|
529
|
572 else |
|
|
573 print_usage ("input"); |
|
|
574 |
|
|
575 return retval; |
|
|
576 } |
|
|
577 |
|
1957
|
578 DEFUN (keyboard, args, , |
|
529
|
579 "keyboard (PROMPT)\n\ |
|
|
580 \n\ |
|
|
581 maybe help in debugging function files") |
|
|
582 { |
|
2086
|
583 octave_value_list retval; |
|
529
|
584 |
|
|
585 int nargin = args.length (); |
|
|
586 |
|
712
|
587 if (nargin == 0 || nargin == 1) |
|
3006
|
588 retval = get_user_input (args, true); |
|
529
|
589 else |
|
|
590 print_usage ("keyboard"); |
|
|
591 |
|
|
592 return retval; |
|
|
593 } |
|
|
594 |
|
1957
|
595 DEFUN_TEXT(echo, args, , |
|
1588
|
596 "echo [options]\n\ |
|
|
597 \n\ |
|
|
598 echo [on|off] -- enable or disable echoing of commands as\n\ |
|
|
599 they are executed in script files\n\ |
|
|
600 \n\ |
|
|
601 echo [on all|off all] -- enable or disable echoing of commands as they\n\ |
|
|
602 are executed in script files and functions\n\ |
|
|
603 \n\ |
|
|
604 Without any arguments, toggle the current echo state.") |
|
|
605 { |
|
2086
|
606 octave_value_list retval; |
|
1588
|
607 |
|
1755
|
608 int argc = args.length () + 1; |
|
|
609 |
|
1968
|
610 string_vector argv = args.make_argv ("echo"); |
|
1755
|
611 |
|
|
612 if (error_state) |
|
|
613 return retval; |
|
1588
|
614 |
|
|
615 switch (argc) |
|
|
616 { |
|
|
617 case 1: |
|
|
618 { |
|
2205
|
619 if ((Vecho_executing_commands & ECHO_SCRIPTS) |
|
|
620 || (Vecho_executing_commands & ECHO_FUNCTIONS)) |
|
2431
|
621 bind_builtin_variable ("echo_executing_commands", |
|
2800
|
622 static_cast<double> (ECHO_OFF)); |
|
1588
|
623 else |
|
2431
|
624 bind_builtin_variable ("echo_executing_commands", |
|
2800
|
625 static_cast<double> (ECHO_SCRIPTS)); |
|
1588
|
626 } |
|
|
627 break; |
|
|
628 |
|
|
629 case 2: |
|
|
630 { |
|
1755
|
631 string arg = argv[1]; |
|
|
632 |
|
|
633 if (arg == "on") |
|
2431
|
634 bind_builtin_variable ("echo_executing_commands", |
|
2800
|
635 static_cast<double> (ECHO_SCRIPTS)); |
|
1755
|
636 else if (arg == "off") |
|
2431
|
637 bind_builtin_variable ("echo_executing_commands", |
|
2800
|
638 static_cast<double> (ECHO_OFF)); |
|
1588
|
639 else |
|
|
640 print_usage ("echo"); |
|
|
641 } |
|
|
642 break; |
|
|
643 |
|
|
644 case 3: |
|
|
645 { |
|
1755
|
646 string arg = argv[1]; |
|
|
647 |
|
|
648 if (arg == "on" && argv[2] == "all") |
|
2800
|
649 { |
|
|
650 int tmp = (ECHO_SCRIPTS | ECHO_FUNCTIONS); |
|
|
651 bind_builtin_variable ("echo_executing_commands", |
|
|
652 static_cast<double> (tmp)); |
|
|
653 } |
|
1755
|
654 else if (arg == "off" && argv[2] == "all") |
|
2431
|
655 bind_builtin_variable ("echo_executing_commands", |
|
2800
|
656 static_cast<double> (ECHO_OFF)); |
|
1588
|
657 else |
|
|
658 print_usage ("echo"); |
|
|
659 } |
|
|
660 break; |
|
|
661 |
|
|
662 default: |
|
|
663 print_usage ("echo"); |
|
|
664 break; |
|
|
665 } |
|
|
666 |
|
|
667 return retval; |
|
|
668 } |
|
|
669 |
|
2234
|
670 DEFUN (completion_matches, args, nargout, |
|
2299
|
671 "completion_matches (HINT): generate possible completions given HINT\n\ |
|
|
672 \n\ |
|
|
673 This function is provided for the benefit of programs like Emacs which\n\ |
|
|
674 might be controlling Octave and handling user input. The current command\n\ |
|
|
675 number is not incremented when this function is called. This is a feature,\n\ |
|
|
676 not a bug.") |
|
2234
|
677 { |
|
2281
|
678 octave_value retval; |
|
2234
|
679 |
|
|
680 int nargin = args.length (); |
|
|
681 |
|
|
682 if (nargin == 1) |
|
|
683 { |
|
2944
|
684 string hint = args(0).string_value (); |
|
2234
|
685 |
|
|
686 if (! error_state) |
|
|
687 { |
|
|
688 int n = 32; |
|
|
689 |
|
|
690 string_vector list (n); |
|
|
691 |
|
|
692 int k = 0; |
|
|
693 |
|
|
694 for (;;) |
|
|
695 { |
|
2944
|
696 string cmd = generate_completion (hint, k); |
|
2234
|
697 |
|
2944
|
698 if (! cmd.empty ()) |
|
2234
|
699 { |
|
2944
|
700 if (k == n) |
|
2234
|
701 { |
|
2944
|
702 n *= 2; |
|
|
703 list.resize (n); |
|
|
704 } |
|
2235
|
705 |
|
2944
|
706 list[k++] = cmd; |
|
2234
|
707 } |
|
|
708 else |
|
|
709 { |
|
|
710 list.resize (k); |
|
|
711 break; |
|
|
712 } |
|
|
713 } |
|
|
714 |
|
|
715 if (nargout > 0) |
|
2281
|
716 { |
|
|
717 if (! list.empty ()) |
|
|
718 retval = list; |
|
2282
|
719 else |
|
|
720 retval = ""; |
|
2281
|
721 } |
|
2234
|
722 else |
|
|
723 { |
|
2235
|
724 // We don't use string_vector::list_in_columns here |
|
|
725 // because it will be easier for Emacs if the names |
|
|
726 // appear in a single column. |
|
|
727 |
|
2234
|
728 int len = list.length (); |
|
|
729 |
|
|
730 for (int i = 0; i < len; i++) |
|
|
731 octave_stdout << list[i] << "\n"; |
|
|
732 } |
|
2299
|
733 |
|
|
734 octave_completion_matches_called = true; |
|
2234
|
735 } |
|
|
736 } |
|
|
737 else |
|
|
738 print_usage ("completion_matches"); |
|
|
739 |
|
|
740 return retval; |
|
|
741 } |
|
|
742 |
|
2181
|
743 static int |
|
|
744 ps1 (void) |
|
|
745 { |
|
|
746 int status = 0; |
|
|
747 |
|
|
748 Vps1 = builtin_string_variable ("PS1"); |
|
|
749 |
|
|
750 return status; |
|
|
751 } |
|
|
752 |
|
|
753 static int |
|
|
754 ps2 (void) |
|
|
755 { |
|
|
756 int status = 0; |
|
|
757 |
|
|
758 Vps2 = builtin_string_variable ("PS2"); |
|
|
759 |
|
|
760 return status; |
|
|
761 } |
|
|
762 |
|
|
763 static int |
|
|
764 ps4 (void) |
|
|
765 { |
|
|
766 int status = 0; |
|
|
767 |
|
|
768 Vps4 = builtin_string_variable ("PS4"); |
|
|
769 |
|
|
770 return status; |
|
|
771 } |
|
|
772 |
|
|
773 static int |
|
|
774 completion_append_char (void) |
|
|
775 { |
|
|
776 int status = 0; |
|
|
777 |
|
|
778 string s = builtin_string_variable ("completion_append_char"); |
|
|
779 |
|
|
780 switch (s.length ()) |
|
|
781 { |
|
|
782 case 1: |
|
|
783 Vcompletion_append_char = s[0]; |
|
|
784 break; |
|
|
785 |
|
|
786 case 0: |
|
|
787 Vcompletion_append_char = '\0'; |
|
|
788 break; |
|
|
789 |
|
|
790 default: |
|
|
791 warning ("completion_append_char must be a single character"); |
|
|
792 status = -1; |
|
|
793 break; |
|
|
794 } |
|
|
795 |
|
|
796 return status; |
|
|
797 } |
|
|
798 |
|
3019
|
799 static int |
|
|
800 echo_executing_commands (void) |
|
|
801 { |
|
|
802 Vecho_executing_commands = check_preference ("echo_executing_commands"); |
|
|
803 |
|
|
804 return 0; |
|
|
805 } |
|
|
806 |
|
2181
|
807 void |
|
|
808 symbols_of_input (void) |
|
|
809 { |
|
|
810 DEFVAR (PS1, "\\s:\\#> ", 0, ps1, |
|
|
811 "primary prompt string"); |
|
|
812 |
|
|
813 DEFVAR (PS2, "> ", 0, ps2, |
|
|
814 "secondary prompt string"); |
|
|
815 |
|
|
816 DEFVAR (PS4, "+ ", 0, ps4, |
|
|
817 "string printed before echoed input (enabled by --echo-input)"); |
|
|
818 |
|
|
819 DEFVAR (completion_append_char, " ", 0, completion_append_char, |
|
|
820 "the string to append after successful command-line completion attempts"); |
|
3019
|
821 |
|
|
822 DEFVAR (echo_executing_commands, static_cast<double> (ECHO_OFF), 0, |
|
|
823 echo_executing_commands, |
|
|
824 "echo commands as they are executed"); |
|
2181
|
825 } |
|
|
826 |
|
1
|
827 /* |
|
|
828 ;;; Local Variables: *** |
|
|
829 ;;; mode: C++ *** |
|
|
830 ;;; End: *** |
|
|
831 */ |
