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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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3098
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67 #include "unwind-prot.h" |
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1352
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68 #include "utils.h" |
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69 #include "variables.h" |
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529
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70 |
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2181
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71 // Primary prompt string. |
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72 static string Vps1; |
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73 |
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74 // Secondary prompt string. |
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75 static string Vps2; |
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76 |
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77 // String printed before echoed input (enabled by --echo-input). |
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78 string Vps4; |
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79 |
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3019
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80 // Echo commands as they are executed? |
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81 // |
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82 // 1 ==> echo commands read from script files |
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83 // 2 ==> echo commands from functions |
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84 // 4 ==> echo commands read from command line |
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85 // |
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86 // more than one state can be active at once. |
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87 int Vecho_executing_commands; |
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88 |
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2181
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89 // Character to append after successful command-line completion attempts. |
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90 static char Vcompletion_append_char; |
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91 |
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1
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92 // Global pointer for eval(). |
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1755
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93 string current_eval_string; |
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1
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94 |
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3019
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95 // TRUE means get input from current_eval_string. |
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96 bool get_input_from_eval_string = false; |
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97 |
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3019
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98 // TRUE means we're parsing a function file. |
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99 bool reading_fcn_file = false; |
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1
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100 |
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338
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101 // Simple name of function file we are reading. |
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1755
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102 string curr_fcn_file_name; |
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1606
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103 |
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104 // Full name of file we are reading. |
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1755
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105 string curr_fcn_file_full_name; |
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1
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106 |
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3019
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107 // TRUE means we're parsing a script file. |
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108 bool reading_script_file = false; |
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1
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109 |
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110 // If we are reading from an M-file, this is it. |
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529
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111 FILE *ff_instream = 0; |
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1
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112 |
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3019
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113 // TRUE means this is an interactive shell. |
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114 bool interactive = false; |
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115 |
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3019
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116 // TRUE means the user forced this shell to be interactive (-i). |
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117 bool forced_interactive = false; |
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1
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118 |
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119 // Should we issue a prompt? |
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120 int promptflag = 1; |
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121 |
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122 // The current line of input, from wherever. |
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1755
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123 string current_input_line; |
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1
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124 |
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2299
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125 // TRUE after a call to completion_matches(). |
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126 bool octave_completion_matches_called = false; |
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127 |
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1044
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128 static void |
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1755
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129 do_input_echo (const string& input_string) |
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1044
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130 { |
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1588
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131 int do_echo = reading_script_file ? |
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2205
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132 (Vecho_executing_commands & ECHO_SCRIPTS) |
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2618
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133 : (Vecho_executing_commands & ECHO_CMD_LINE) && ! forced_interactive; |
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134 |
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135 if (do_echo) |
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1044
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136 { |
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1403
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137 if (forced_interactive) |
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138 { |
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1755
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139 if (promptflag > 0) |
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2927
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140 octave_stdout << command_editor::decode_prompt_string (Vps1); |
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1755
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141 else |
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2927
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142 octave_stdout << command_editor::decode_prompt_string (Vps2); |
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1403
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143 } |
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144 else |
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2927
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145 octave_stdout << command_editor::decode_prompt_string (Vps4); |
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1044
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146 |
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1755
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147 if (! input_string.empty ()) |
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1044
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148 { |
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2095
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149 octave_stdout << input_string; |
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150 |
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151 if (input_string[input_string.length () - 1] != '\n') |
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2095
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152 octave_stdout << "\n"; |
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1044
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153 } |
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154 } |
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155 } |
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156 |
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2927
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157 string |
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158 gnu_readline (const string& s, bool force_readline) |
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1822
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159 { |
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2927
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160 string retval; |
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1822
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161 |
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2927
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162 if (line_editing || force_readline) |
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1822
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163 { |
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2927
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164 retval = command_editor::readline (s); |
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1898
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165 |
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2927
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166 if (retval.empty ()) |
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167 retval = "\n"; |
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1822
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168 } |
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169 else |
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170 { |
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2927
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171 if (! s.empty () && (interactive || forced_interactive)) |
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2618
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172 { |
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2927
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173 FILE *stream = command_editor::get_output_stream (); |
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174 |
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175 fprintf (stream, s.c_str ()); |
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176 fflush (stream); |
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2618
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177 } |
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1822
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178 |
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2927
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179 FILE *curr_stream = command_editor::get_input_stream (); |
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180 |
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1822
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181 if (reading_fcn_file || reading_script_file) |
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182 curr_stream = ff_instream; |
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183 |
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2927
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184 retval = octave_fgets (curr_stream); |
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1822
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185 } |
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186 |
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187 return retval; |
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188 } |
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581
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189 |
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2927
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190 static string |
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1
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191 octave_gets (void) |
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192 { |
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2927
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193 string retval; |
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1
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194 |
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1822
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195 if ((interactive || forced_interactive) |
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196 && (! (reading_fcn_file || reading_script_file))) |
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1
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197 { |
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2927
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198 string ps = (promptflag > 0) ? Vps1 : Vps2; |
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199 |
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200 string prompt = command_editor::decode_prompt_string (ps); |
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1
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201 |
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2618
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202 pipe_handler_error_count = 0; |
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203 |
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204 flush_octave_stdout (); |
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1
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205 |
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2095
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206 octave_diary << prompt; |
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581
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207 |
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2927
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208 retval = gnu_readline (prompt); |
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1
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209 } |
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210 else |
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1822
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211 retval = gnu_readline (""); |
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1
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212 |
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213 current_input_line = retval; |
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1
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214 |
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1822
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215 if (! current_input_line.empty ()) |
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1
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216 { |
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1799
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217 if (! input_from_startup_file) |
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218 command_history::add (current_input_line); |
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219 |
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2095
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220 octave_diary << current_input_line; |
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221 |
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1822
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222 do_input_echo (current_input_line); |
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1
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223 } |
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581
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224 |
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2095
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225 octave_diary << "\n"; |
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581
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226 |
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1822
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227 return retval; |
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1
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228 } |
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229 |
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581
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230 // Read a line from the input stream. |
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231 |
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2927
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232 static string |
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1822
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233 get_user_input (void) |
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1
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234 { |
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2927
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235 string retval; |
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1
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236 |
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237 if (get_input_from_eval_string) |
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238 { |
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2927
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239 retval = current_eval_string; |
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1822
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240 |
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2927
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241 size_t len = retval.length (); |
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1822
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242 |
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2927
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243 if (retval[len-1] != '\n') |
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244 retval.append ("\n"); |
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1822
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245 } |
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246 else |
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247 retval = octave_gets (); |
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248 |
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2927
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249 current_input_line = retval; |
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1822
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250 |
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2114
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251 if (! get_input_from_eval_string) |
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252 input_line_number++; |
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1822
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253 |
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254 return retval; |
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255 } |
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256 |
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257 int |
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258 octave_read (char *buf, unsigned max_size) |
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259 { |
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2927
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260 // XXX FIXME XXX -- is this a safe way to buffer the input? |
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261 |
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262 static string input_buf; |
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263 static const char *pos = 0; |
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264 static size_t chars_left = 0; |
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1822
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265 |
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266 int status = 0; |
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267 |
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2927
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268 if (input_buf.empty ()) |
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1822
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269 { |
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2927
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270 pos = 0; |
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271 |
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272 input_buf = get_user_input (); |
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1822
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273 |
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2927
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274 chars_left = input_buf.length (); |
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275 |
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276 pos = input_buf.c_str (); |
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1822
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277 } |
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278 |
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279 if (chars_left > 0) |
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280 { |
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281 buf[0] = '\0'; |
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282 |
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2927
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283 size_t len = max_size > 2 ? max_size - 2 : 0; |
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1822
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284 |
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2927
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285 assert (len > 0); |
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286 |
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287 strncpy (buf, pos, len); |
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1822
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288 |
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289 if (chars_left > len) |
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1
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290 { |
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1822
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291 chars_left -= len; |
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292 |
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2927
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293 pos += len; |
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1822
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294 |
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295 buf[len] = '\0'; |
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296 |
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1
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297 status = len; |
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298 } |
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299 else |
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300 { |
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2927
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301 input_buf = ""; |
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1755
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302 |
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1822
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303 len = chars_left; |
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304 |
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305 if (buf[len-1] != '\n') |
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306 buf[len++] = '\n'; |
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1
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307 |
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1822
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308 buf[len] = '\0'; |
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1755
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309 |
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1822
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310 status = len; |
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1
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311 } |
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1044
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312 } |
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1822
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313 else if (chars_left == 0) |
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2862
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314 { |
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2927
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315 input_buf = ""; |
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2862
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316 |
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317 status = 0; |
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318 } |
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1822
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319 else |
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320 status = -1; |
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1044
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321 |
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1
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322 return status; |
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323 } |
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324 |
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581
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325 // Fix things up so that input can come from file `name', printing a |
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326 // warning if the file doesn't exist. |
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327 |
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1
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328 FILE * |
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1750
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329 get_input_from_file (const string& name, int warn) |
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1
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330 { |
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529
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331 FILE *instream = 0; |
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1
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332 |
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1750
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333 if (name.length () > 0) |
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334 instream = fopen (name.c_str (), "r"); |
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1
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335 |
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529
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336 if (! instream && warn) |
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1750
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337 warning ("%s: no such file or directory", name.c_str ()); |
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1
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338 |
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338
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339 if (reading_fcn_file || reading_script_file) |
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339
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340 ff_instream = instream; |
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1
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341 else |
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2927
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342 command_editor::set_input_stream (instream); |
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1
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343 |
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344 return instream; |
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345 } |
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346 |
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581
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347 // Fix things up so that input can come from the standard input. This |
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348 // may need to become much more complicated, which is why it's in a |
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349 // separate function. |
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350 |
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1
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351 FILE * |
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352 get_input_from_stdin (void) |
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353 { |
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2927
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354 command_editor::set_input_stream (stdin); |
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355 return command_editor::get_input_stream (); |
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1
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356 } |
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357 |
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2921
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358 // XXX FIXME XXX -- make this generate file names when appropriate. |
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359 |
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2247
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360 static string_vector |
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2921
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361 generate_possible_completions (const string& text, string& prefix, |
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362 string& hint) |
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1280
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363 { |
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2247
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364 string_vector names; |
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1280
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365 |
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2921
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366 prefix = ""; |
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1280
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367 |
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2921
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368 if (! text.empty () && text != "." && text.rfind ('.') != NPOS) |
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1430
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369 names = generate_struct_completions (text, prefix, hint); |
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370 else |
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2247
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371 names = make_name_list (); |
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1280
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372 |
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2944
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373 // Sort and remove duplicates. |
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2348
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374 |
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2944
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375 names.qsort (true); |
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2348
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376 |
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1280
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377 return names; |
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378 } |
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379 |
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2944
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380 static string |
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381 generate_completion (const string& text, int state) |
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1280
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382 { |
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2944
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383 string retval; |
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384 |
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2921
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385 static string prefix; |
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386 static string hint; |
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1280
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387 |
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2921
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388 static size_t prefix_len = 0; |
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389 static size_t hint_len = 0; |
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1280
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390 |
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1
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391 static int list_index = 0; |
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2921
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392 static int name_list_len = 0; |
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2247
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393 static string_vector name_list; |
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1
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394 |
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1280
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395 static int matches = 0; |
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1
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396 |
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397 if (state == 0) |
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398 { |
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399 list_index = 0; |
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400 |
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2921
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401 prefix = ""; |
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1280
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402 |
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2921
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403 hint = text; |
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1280
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404 |
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405 name_list = generate_possible_completions (text, prefix, hint); |
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406 |
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2921
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407 name_list_len = name_list.length (); |
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408 |
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409 prefix_len = prefix.length (); |
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1280
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410 |
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2921
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411 hint_len = hint.length (); |
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1280
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412 |
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413 matches = 0; |
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2247
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414 |
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2921
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415 for (int i = 0; i < name_list_len; i++) |
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416 if (! name_list[i].compare (hint, 0, hint_len)) |
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2247
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417 matches++; |
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1
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418 } |
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419 |
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2921
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420 if (name_list_len > 0 && matches > 0) |
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1
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421 { |
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2921
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422 while (list_index < name_list_len) |
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244
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423 { |
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2921
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424 string name = name_list[list_index]; |
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2247
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425 |
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1280
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426 list_index++; |
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2247
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427 |
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2921
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428 if (! name.compare (hint, 0, hint_len)) |
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1280
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429 { |
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2944
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430 if (! prefix.empty ()) |
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431 retval = prefix + "." + name; |
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432 else |
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433 retval = name; |
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1280
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434 |
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2944
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435 if (matches == 1 && looks_like_struct (retval)) |
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2927
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436 command_editor::set_completion_append_character ('.'); |
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1280
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437 else |
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2927
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438 command_editor::set_completion_append_character |
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439 (Vcompletion_append_char); |
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1280
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440 |
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2944
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441 break; |
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1280
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442 } |
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244
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443 } |
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1
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444 } |
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445 |
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2944
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446 return retval; |
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1
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447 } |
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448 |
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2927
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449 void |
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450 initialize_command_input (void) |
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451 { |
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452 // If we are using readline, this allows conditional parsing of the |
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453 // .inputrc file. |
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269
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454 |
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2927
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455 command_editor::set_name ("Octave"); |
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1358
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456 |
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3004
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457 command_editor::set_basic_quote_characters ("\""); |
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2944
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458 |
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459 command_editor::set_completion_function (generate_completion); |
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269
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460 } |
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461 |
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2927
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462 static bool |
|
|
463 match_sans_spaces (const string& standard, const string& test) |
|
269
|
464 { |
|
2927
|
465 string tmp = test; |
|
269
|
466 |
|
2927
|
467 size_t beg = test.find_first_not_of (" \t"); |
|
|
468 size_t end = test.find_last_not_of (" \t"); |
|
|
469 size_t len = beg - end + 1; |
|
1
|
470 |
|
2927
|
471 return test.compare (standard, beg, len) == 0; |
|
529
|
472 } |
|
|
473 |
|
581
|
474 // If the user simply hits return, this will produce an empty matrix. |
|
|
475 |
|
2086
|
476 static octave_value_list |
|
3006
|
477 get_user_input (const octave_value_list& args, bool debug = false) |
|
529
|
478 { |
|
2086
|
479 octave_value retval; |
|
529
|
480 |
|
|
481 int nargin = args.length (); |
|
|
482 |
|
|
483 int read_as_string = 0; |
|
|
484 |
|
712
|
485 if (nargin == 2) |
|
529
|
486 read_as_string++; |
|
|
487 |
|
1761
|
488 string prompt ("debug> "); |
|
|
489 |
|
712
|
490 if (nargin > 0) |
|
529
|
491 { |
|
1761
|
492 prompt = args(0).string_value (); |
|
636
|
493 |
|
|
494 if (error_state) |
|
|
495 { |
|
|
496 error ("input: unrecognized argument"); |
|
|
497 return retval; |
|
|
498 } |
|
529
|
499 } |
|
|
500 |
|
|
501 again: |
|
|
502 |
|
2095
|
503 flush_octave_stdout (); |
|
529
|
504 |
|
2927
|
505 string input_buf = gnu_readline (prompt.c_str (), true); |
|
529
|
506 |
|
2927
|
507 if (! input_buf.empty ()) |
|
529
|
508 { |
|
1799
|
509 if (! input_from_startup_file) |
|
2927
|
510 command_history::add (input_buf); |
|
529
|
511 |
|
2927
|
512 size_t len = input_buf.length (); |
|
529
|
513 |
|
|
514 if (len < 1) |
|
|
515 { |
|
|
516 if (debug) |
|
|
517 goto again; |
|
|
518 else |
|
963
|
519 { |
|
|
520 if (read_as_string) |
|
|
521 return ""; |
|
|
522 else |
|
|
523 return Matrix (); |
|
|
524 } |
|
529
|
525 } |
|
|
526 |
|
|
527 if (match_sans_spaces ("exit", input_buf) |
|
|
528 || match_sans_spaces ("quit", input_buf) |
|
|
529 || match_sans_spaces ("return", input_buf)) |
|
963
|
530 { |
|
|
531 return retval; |
|
|
532 } |
|
529
|
533 else if (read_as_string) |
|
963
|
534 { |
|
3081
|
535 // XXX FIXME XXX -- fix gnu_readline and octave_gets instead! |
|
|
536 if (input_buf.length () == 1 && input_buf[0] == '\n') |
|
|
537 retval = ""; |
|
|
538 else |
|
|
539 retval = input_buf; |
|
963
|
540 } |
|
529
|
541 else |
|
|
542 { |
|
|
543 int parse_status = 0; |
|
2900
|
544 |
|
3098
|
545 retval = eval_string (input_buf, (! debug), parse_status); |
|
2900
|
546 |
|
3098
|
547 if (retval.is_undefined ()) |
|
963
|
548 retval = Matrix (); |
|
529
|
549 } |
|
|
550 } |
|
|
551 else |
|
|
552 error ("input: reading user-input failed!"); |
|
|
553 |
|
|
554 if (debug) |
|
3098
|
555 { |
|
|
556 // Clear error_state so that if errors were encountered while |
|
|
557 // evaluating user input, extra error messages will not be |
|
|
558 // printed after we return. |
|
|
559 |
|
|
560 error_state = 0; |
|
|
561 |
|
|
562 retval = octave_value (); |
|
|
563 |
|
|
564 goto again; |
|
|
565 } |
|
529
|
566 |
|
|
567 return retval; |
|
|
568 } |
|
|
569 |
|
1957
|
570 DEFUN (input, args, , |
|
529
|
571 "input (PROMPT [, S])\n\ |
|
|
572 \n\ |
|
2802
|
573 Prompt user for input. If the second argument is present, return\n\ |
|
529
|
574 value as a string.") |
|
|
575 { |
|
2086
|
576 octave_value_list retval; |
|
529
|
577 |
|
|
578 int nargin = args.length (); |
|
|
579 |
|
712
|
580 if (nargin == 1 || nargin == 2) |
|
1488
|
581 retval = get_user_input (args); |
|
529
|
582 else |
|
|
583 print_usage ("input"); |
|
|
584 |
|
|
585 return retval; |
|
|
586 } |
|
|
587 |
|
3098
|
588 static void |
|
|
589 restore_command_history (void *) |
|
|
590 { |
|
|
591 command_history::ignore_entries (! Vsaving_history); |
|
|
592 } |
|
|
593 |
|
1957
|
594 DEFUN (keyboard, args, , |
|
529
|
595 "keyboard (PROMPT)\n\ |
|
|
596 \n\ |
|
|
597 maybe help in debugging function files") |
|
|
598 { |
|
2086
|
599 octave_value_list retval; |
|
529
|
600 |
|
|
601 int nargin = args.length (); |
|
|
602 |
|
712
|
603 if (nargin == 0 || nargin == 1) |
|
3098
|
604 { |
|
|
605 unwind_protect::begin_frame ("keyboard"); |
|
|
606 |
|
|
607 // XXX FIXME XXX -- we shouldn't need both the |
|
|
608 // command_history object and the |
|
|
609 // Vsaving_history variable... |
|
|
610 command_history::ignore_entries (false); |
|
|
611 |
|
|
612 unwind_protect::add (restore_command_history, 0); |
|
|
613 |
|
|
614 unwind_protect_bool (Vsaving_history); |
|
|
615 |
|
|
616 Vsaving_history = true; |
|
|
617 |
|
|
618 retval = get_user_input (args, true); |
|
|
619 |
|
|
620 unwind_protect::run_frame ("keyboard"); |
|
|
621 } |
|
529
|
622 else |
|
|
623 print_usage ("keyboard"); |
|
|
624 |
|
|
625 return retval; |
|
|
626 } |
|
|
627 |
|
1957
|
628 DEFUN_TEXT(echo, args, , |
|
1588
|
629 "echo [options]\n\ |
|
|
630 \n\ |
|
|
631 echo [on|off] -- enable or disable echoing of commands as\n\ |
|
|
632 they are executed in script files\n\ |
|
|
633 \n\ |
|
|
634 echo [on all|off all] -- enable or disable echoing of commands as they\n\ |
|
|
635 are executed in script files and functions\n\ |
|
|
636 \n\ |
|
|
637 Without any arguments, toggle the current echo state.") |
|
|
638 { |
|
2086
|
639 octave_value_list retval; |
|
1588
|
640 |
|
1755
|
641 int argc = args.length () + 1; |
|
|
642 |
|
1968
|
643 string_vector argv = args.make_argv ("echo"); |
|
1755
|
644 |
|
|
645 if (error_state) |
|
|
646 return retval; |
|
1588
|
647 |
|
|
648 switch (argc) |
|
|
649 { |
|
|
650 case 1: |
|
|
651 { |
|
2205
|
652 if ((Vecho_executing_commands & ECHO_SCRIPTS) |
|
|
653 || (Vecho_executing_commands & ECHO_FUNCTIONS)) |
|
2431
|
654 bind_builtin_variable ("echo_executing_commands", |
|
2800
|
655 static_cast<double> (ECHO_OFF)); |
|
1588
|
656 else |
|
2431
|
657 bind_builtin_variable ("echo_executing_commands", |
|
2800
|
658 static_cast<double> (ECHO_SCRIPTS)); |
|
1588
|
659 } |
|
|
660 break; |
|
|
661 |
|
|
662 case 2: |
|
|
663 { |
|
1755
|
664 string arg = argv[1]; |
|
|
665 |
|
|
666 if (arg == "on") |
|
2431
|
667 bind_builtin_variable ("echo_executing_commands", |
|
2800
|
668 static_cast<double> (ECHO_SCRIPTS)); |
|
1755
|
669 else if (arg == "off") |
|
2431
|
670 bind_builtin_variable ("echo_executing_commands", |
|
2800
|
671 static_cast<double> (ECHO_OFF)); |
|
1588
|
672 else |
|
|
673 print_usage ("echo"); |
|
|
674 } |
|
|
675 break; |
|
|
676 |
|
|
677 case 3: |
|
|
678 { |
|
1755
|
679 string arg = argv[1]; |
|
|
680 |
|
|
681 if (arg == "on" && argv[2] == "all") |
|
2800
|
682 { |
|
|
683 int tmp = (ECHO_SCRIPTS | ECHO_FUNCTIONS); |
|
|
684 bind_builtin_variable ("echo_executing_commands", |
|
|
685 static_cast<double> (tmp)); |
|
|
686 } |
|
1755
|
687 else if (arg == "off" && argv[2] == "all") |
|
2431
|
688 bind_builtin_variable ("echo_executing_commands", |
|
2800
|
689 static_cast<double> (ECHO_OFF)); |
|
1588
|
690 else |
|
|
691 print_usage ("echo"); |
|
|
692 } |
|
|
693 break; |
|
|
694 |
|
|
695 default: |
|
|
696 print_usage ("echo"); |
|
|
697 break; |
|
|
698 } |
|
|
699 |
|
|
700 return retval; |
|
|
701 } |
|
|
702 |
|
2234
|
703 DEFUN (completion_matches, args, nargout, |
|
2299
|
704 "completion_matches (HINT): generate possible completions given HINT\n\ |
|
|
705 \n\ |
|
|
706 This function is provided for the benefit of programs like Emacs which\n\ |
|
|
707 might be controlling Octave and handling user input. The current command\n\ |
|
|
708 number is not incremented when this function is called. This is a feature,\n\ |
|
|
709 not a bug.") |
|
2234
|
710 { |
|
2281
|
711 octave_value retval; |
|
2234
|
712 |
|
|
713 int nargin = args.length (); |
|
|
714 |
|
|
715 if (nargin == 1) |
|
|
716 { |
|
2944
|
717 string hint = args(0).string_value (); |
|
2234
|
718 |
|
|
719 if (! error_state) |
|
|
720 { |
|
|
721 int n = 32; |
|
|
722 |
|
|
723 string_vector list (n); |
|
|
724 |
|
|
725 int k = 0; |
|
|
726 |
|
|
727 for (;;) |
|
|
728 { |
|
2944
|
729 string cmd = generate_completion (hint, k); |
|
2234
|
730 |
|
2944
|
731 if (! cmd.empty ()) |
|
2234
|
732 { |
|
2944
|
733 if (k == n) |
|
2234
|
734 { |
|
2944
|
735 n *= 2; |
|
|
736 list.resize (n); |
|
|
737 } |
|
2235
|
738 |
|
2944
|
739 list[k++] = cmd; |
|
2234
|
740 } |
|
|
741 else |
|
|
742 { |
|
|
743 list.resize (k); |
|
|
744 break; |
|
|
745 } |
|
|
746 } |
|
|
747 |
|
|
748 if (nargout > 0) |
|
2281
|
749 { |
|
|
750 if (! list.empty ()) |
|
|
751 retval = list; |
|
2282
|
752 else |
|
|
753 retval = ""; |
|
2281
|
754 } |
|
2234
|
755 else |
|
|
756 { |
|
2235
|
757 // We don't use string_vector::list_in_columns here |
|
|
758 // because it will be easier for Emacs if the names |
|
|
759 // appear in a single column. |
|
|
760 |
|
2234
|
761 int len = list.length (); |
|
|
762 |
|
|
763 for (int i = 0; i < len; i++) |
|
|
764 octave_stdout << list[i] << "\n"; |
|
|
765 } |
|
2299
|
766 |
|
|
767 octave_completion_matches_called = true; |
|
2234
|
768 } |
|
|
769 } |
|
|
770 else |
|
|
771 print_usage ("completion_matches"); |
|
|
772 |
|
|
773 return retval; |
|
|
774 } |
|
|
775 |
|
2181
|
776 static int |
|
|
777 ps1 (void) |
|
|
778 { |
|
|
779 int status = 0; |
|
|
780 |
|
|
781 Vps1 = builtin_string_variable ("PS1"); |
|
|
782 |
|
|
783 return status; |
|
|
784 } |
|
|
785 |
|
|
786 static int |
|
|
787 ps2 (void) |
|
|
788 { |
|
|
789 int status = 0; |
|
|
790 |
|
|
791 Vps2 = builtin_string_variable ("PS2"); |
|
|
792 |
|
|
793 return status; |
|
|
794 } |
|
|
795 |
|
|
796 static int |
|
|
797 ps4 (void) |
|
|
798 { |
|
|
799 int status = 0; |
|
|
800 |
|
|
801 Vps4 = builtin_string_variable ("PS4"); |
|
|
802 |
|
|
803 return status; |
|
|
804 } |
|
|
805 |
|
|
806 static int |
|
|
807 completion_append_char (void) |
|
|
808 { |
|
|
809 int status = 0; |
|
|
810 |
|
|
811 string s = builtin_string_variable ("completion_append_char"); |
|
|
812 |
|
|
813 switch (s.length ()) |
|
|
814 { |
|
|
815 case 1: |
|
|
816 Vcompletion_append_char = s[0]; |
|
|
817 break; |
|
|
818 |
|
|
819 case 0: |
|
|
820 Vcompletion_append_char = '\0'; |
|
|
821 break; |
|
|
822 |
|
|
823 default: |
|
|
824 warning ("completion_append_char must be a single character"); |
|
|
825 status = -1; |
|
|
826 break; |
|
|
827 } |
|
|
828 |
|
|
829 return status; |
|
|
830 } |
|
|
831 |
|
3019
|
832 static int |
|
|
833 echo_executing_commands (void) |
|
|
834 { |
|
|
835 Vecho_executing_commands = check_preference ("echo_executing_commands"); |
|
|
836 |
|
|
837 return 0; |
|
|
838 } |
|
|
839 |
|
2181
|
840 void |
|
|
841 symbols_of_input (void) |
|
|
842 { |
|
|
843 DEFVAR (PS1, "\\s:\\#> ", 0, ps1, |
|
|
844 "primary prompt string"); |
|
|
845 |
|
|
846 DEFVAR (PS2, "> ", 0, ps2, |
|
|
847 "secondary prompt string"); |
|
|
848 |
|
|
849 DEFVAR (PS4, "+ ", 0, ps4, |
|
|
850 "string printed before echoed input (enabled by --echo-input)"); |
|
|
851 |
|
|
852 DEFVAR (completion_append_char, " ", 0, completion_append_char, |
|
|
853 "the string to append after successful command-line completion attempts"); |
|
3019
|
854 |
|
|
855 DEFVAR (echo_executing_commands, static_cast<double> (ECHO_OFF), 0, |
|
|
856 echo_executing_commands, |
|
|
857 "echo commands as they are executed"); |
|
2181
|
858 } |
|
|
859 |
|
1
|
860 /* |
|
|
861 ;;; Local Variables: *** |
|
|
862 ;;; mode: C++ *** |
|
|
863 ;;; End: *** |
|
|
864 */ |
