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1
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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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1
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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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1315
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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1
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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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1
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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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1352
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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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79 // Character to append after successful command-line completion attempts. |
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80 static char Vcompletion_append_char; |
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81 |
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1
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82 // Global pointer for eval(). |
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1755
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83 string current_eval_string; |
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1
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84 |
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85 // Nonzero means get input from current_eval_string. |
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86 int get_input_from_eval_string = 0; |
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87 |
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338
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88 // Nonzero means we're parsing a function file. |
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89 int reading_fcn_file = 0; |
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1
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90 |
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338
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91 // Simple name of function file we are reading. |
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1755
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92 string curr_fcn_file_name; |
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1606
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93 |
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94 // Full name of file we are reading. |
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1755
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95 string curr_fcn_file_full_name; |
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1
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96 |
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97 // Nonzero means we're parsing a script file. |
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98 int reading_script_file = 0; |
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99 |
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100 // If we are reading from an M-file, this is it. |
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529
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101 FILE *ff_instream = 0; |
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1
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102 |
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103 // Nonzero means this is an interactive shell. |
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104 int interactive = 0; |
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105 |
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106 // Nonzero means the user forced this shell to be interactive (-i). |
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107 int forced_interactive = 0; |
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108 |
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109 // Should we issue a prompt? |
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110 int promptflag = 1; |
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111 |
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112 // The current line of input, from wherever. |
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1755
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113 string current_input_line; |
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1
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114 |
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2299
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115 // TRUE after a call to completion_matches(). |
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116 bool octave_completion_matches_called = false; |
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117 |
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1044
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118 static void |
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1755
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119 do_input_echo (const string& input_string) |
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1044
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120 { |
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1588
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121 int do_echo = reading_script_file ? |
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2205
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122 (Vecho_executing_commands & ECHO_SCRIPTS) |
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2618
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123 : (Vecho_executing_commands & ECHO_CMD_LINE) && ! forced_interactive; |
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1588
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124 |
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125 if (do_echo) |
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1044
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126 { |
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1403
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127 if (forced_interactive) |
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128 { |
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1755
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129 if (promptflag > 0) |
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2927
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130 octave_stdout << command_editor::decode_prompt_string (Vps1); |
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1755
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131 else |
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2927
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132 octave_stdout << command_editor::decode_prompt_string (Vps2); |
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1403
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133 } |
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134 else |
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2927
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135 octave_stdout << command_editor::decode_prompt_string (Vps4); |
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1044
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136 |
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1755
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137 if (! input_string.empty ()) |
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1044
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138 { |
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2095
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139 octave_stdout << input_string; |
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1755
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140 |
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141 if (input_string[input_string.length () - 1] != '\n') |
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2095
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142 octave_stdout << "\n"; |
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1044
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143 } |
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144 } |
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145 } |
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146 |
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2927
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147 string |
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148 gnu_readline (const string& s, bool force_readline) |
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1822
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149 { |
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2927
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150 string retval; |
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1822
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151 |
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2927
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152 if (line_editing || force_readline) |
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1822
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153 { |
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2927
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154 retval = command_editor::readline (s); |
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1898
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155 |
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2927
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156 if (retval.empty ()) |
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157 retval = "\n"; |
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1822
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158 } |
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159 else |
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160 { |
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2927
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161 if (! s.empty () && (interactive || forced_interactive)) |
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2618
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162 { |
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2927
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163 FILE *stream = command_editor::get_output_stream (); |
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164 |
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165 fprintf (stream, s.c_str ()); |
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166 fflush (stream); |
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2618
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167 } |
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1822
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168 |
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2927
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169 FILE *curr_stream = command_editor::get_input_stream (); |
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170 |
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1822
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171 if (reading_fcn_file || reading_script_file) |
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172 curr_stream = ff_instream; |
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173 |
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2927
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174 retval = octave_fgets (curr_stream); |
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1822
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175 } |
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176 |
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177 return retval; |
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178 } |
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581
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179 |
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2927
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180 static string |
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1
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181 octave_gets (void) |
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182 { |
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2927
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183 string retval; |
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1
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184 |
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1822
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185 if ((interactive || forced_interactive) |
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186 && (! (reading_fcn_file || reading_script_file))) |
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1
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187 { |
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2927
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188 string ps = (promptflag > 0) ? Vps1 : Vps2; |
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1755
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189 |
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2927
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190 string prompt = command_editor::decode_prompt_string (ps); |
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1
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191 |
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2618
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192 pipe_handler_error_count = 0; |
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193 |
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194 flush_octave_stdout (); |
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1
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195 |
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2095
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196 octave_diary << prompt; |
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581
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197 |
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2927
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198 retval = gnu_readline (prompt); |
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1
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199 } |
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200 else |
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1822
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201 retval = gnu_readline (""); |
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1
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202 |
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2927
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203 current_input_line = retval; |
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1
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204 |
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1822
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205 if (! current_input_line.empty ()) |
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1
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206 { |
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1799
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207 if (! input_from_startup_file) |
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2927
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208 command_history::add (current_input_line); |
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1
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209 |
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2095
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210 octave_diary << current_input_line; |
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581
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211 |
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1822
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212 do_input_echo (current_input_line); |
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1
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213 } |
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581
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214 |
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2095
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215 octave_diary << "\n"; |
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581
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216 |
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1822
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217 return retval; |
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1
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218 } |
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219 |
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581
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220 // Read a line from the input stream. |
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221 |
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2927
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222 static string |
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1822
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223 get_user_input (void) |
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1
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224 { |
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2927
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225 string retval; |
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1
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226 |
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227 if (get_input_from_eval_string) |
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228 { |
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2927
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229 retval = current_eval_string; |
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1822
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230 |
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2927
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231 size_t len = retval.length (); |
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1822
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232 |
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2927
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233 if (retval[len-1] != '\n') |
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234 retval.append ("\n"); |
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1822
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235 } |
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236 else |
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237 retval = octave_gets (); |
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238 |
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2927
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239 current_input_line = retval; |
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1822
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240 |
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2114
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241 if (! get_input_from_eval_string) |
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242 input_line_number++; |
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1822
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243 |
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244 return retval; |
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245 } |
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246 |
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247 int |
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248 octave_read (char *buf, unsigned max_size) |
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249 { |
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2927
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250 // XXX FIXME XXX -- is this a safe way to buffer the input? |
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251 |
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252 static string input_buf; |
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253 static const char *pos = 0; |
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254 static size_t chars_left = 0; |
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1822
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255 |
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256 int status = 0; |
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257 |
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2927
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258 if (input_buf.empty ()) |
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1822
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259 { |
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2927
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260 pos = 0; |
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261 |
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262 input_buf = get_user_input (); |
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1822
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263 |
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2927
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264 chars_left = input_buf.length (); |
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265 |
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266 pos = input_buf.c_str (); |
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1822
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267 } |
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268 |
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269 if (chars_left > 0) |
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270 { |
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271 buf[0] = '\0'; |
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272 |
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2927
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273 size_t len = max_size > 2 ? max_size - 2 : 0; |
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1822
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274 |
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2927
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275 assert (len > 0); |
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276 |
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277 strncpy (buf, pos, len); |
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1822
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278 |
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279 if (chars_left > len) |
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1
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280 { |
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1822
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281 chars_left -= len; |
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282 |
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2927
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283 pos += len; |
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1822
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284 |
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285 buf[len] = '\0'; |
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286 |
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1
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287 status = len; |
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288 } |
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289 else |
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290 { |
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2927
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291 input_buf = ""; |
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1755
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292 |
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1822
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293 len = chars_left; |
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294 |
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295 if (buf[len-1] != '\n') |
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296 buf[len++] = '\n'; |
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1
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297 |
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1822
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298 buf[len] = '\0'; |
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1755
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299 |
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1822
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300 status = len; |
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1
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301 } |
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1044
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302 } |
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1822
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303 else if (chars_left == 0) |
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2862
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304 { |
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2927
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305 input_buf = ""; |
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2862
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306 |
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307 status = 0; |
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308 } |
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1822
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309 else |
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310 status = -1; |
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1044
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311 |
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1
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312 return status; |
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313 } |
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314 |
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581
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315 // Fix things up so that input can come from file `name', printing a |
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316 // warning if the file doesn't exist. |
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317 |
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1
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318 FILE * |
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1750
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319 get_input_from_file (const string& name, int warn) |
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1
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320 { |
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529
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321 FILE *instream = 0; |
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1
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322 |
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1750
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323 if (name.length () > 0) |
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324 instream = fopen (name.c_str (), "r"); |
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1
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325 |
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529
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326 if (! instream && warn) |
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1750
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327 warning ("%s: no such file or directory", name.c_str ()); |
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1
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328 |
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338
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329 if (reading_fcn_file || reading_script_file) |
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339
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330 ff_instream = instream; |
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1
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331 else |
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2927
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332 command_editor::set_input_stream (instream); |
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1
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333 |
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334 return instream; |
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335 } |
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336 |
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581
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337 // Fix things up so that input can come from the standard input. This |
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338 // may need to become much more complicated, which is why it's in a |
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339 // separate function. |
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340 |
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1
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341 FILE * |
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342 get_input_from_stdin (void) |
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343 { |
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2927
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344 command_editor::set_input_stream (stdin); |
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345 return command_editor::get_input_stream (); |
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1
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346 } |
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347 |
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2921
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348 // XXX FIXME XXX -- make this generate file names when appropriate. |
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349 |
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2247
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350 static string_vector |
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2921
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351 generate_possible_completions (const string& text, string& prefix, |
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352 string& hint) |
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1280
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353 { |
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2247
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354 string_vector names; |
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1280
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355 |
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2921
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356 prefix = ""; |
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1280
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357 |
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2921
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358 if (! text.empty () && text != "." && text.rfind ('.') != NPOS) |
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1430
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359 names = generate_struct_completions (text, prefix, hint); |
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360 else |
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2247
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361 names = make_name_list (); |
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1280
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362 |
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2348
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363 names.qsort (); |
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364 |
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365 // Remove duplicates. |
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366 |
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367 // XXX FIXME XXX -- maybe this should be defined for all Array objects. |
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368 |
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369 int k = 0; |
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370 |
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371 int len = names.length (); |
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372 |
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373 for (int i = 1; i < len; i++) |
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374 { |
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375 if (names[i] != names[k]) |
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376 { |
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377 k++; |
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378 |
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379 if (k != i) |
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380 names[k] = names[i]; |
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381 } |
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382 } |
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383 |
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384 names.resize (k+1); |
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385 |
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1280
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386 return names; |
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387 } |
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388 |
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389 static char * |
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390 command_generator (const char *text, int state) |
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391 { |
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2921
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392 static string prefix; |
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393 static string hint; |
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1280
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394 |
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2921
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395 static size_t prefix_len = 0; |
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396 static size_t hint_len = 0; |
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1280
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397 |
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1
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398 static int list_index = 0; |
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2921
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399 static int name_list_len = 0; |
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2247
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400 static string_vector name_list; |
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1
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401 |
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1280
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402 static int matches = 0; |
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1
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403 |
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404 if (state == 0) |
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405 { |
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406 list_index = 0; |
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407 |
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2921
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408 prefix = ""; |
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1280
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409 |
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2921
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410 hint = text; |
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1280
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411 |
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412 name_list = generate_possible_completions (text, prefix, hint); |
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413 |
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2921
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414 name_list_len = name_list.length (); |
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415 |
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416 prefix_len = prefix.length (); |
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1280
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417 |
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2921
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418 hint_len = hint.length (); |
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1280
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419 |
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420 matches = 0; |
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2247
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421 |
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2921
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422 for (int i = 0; i < name_list_len; i++) |
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423 if (! name_list[i].compare (hint, 0, hint_len)) |
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2247
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424 matches++; |
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1
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425 } |
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426 |
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2921
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427 if (name_list_len > 0 && matches > 0) |
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1
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428 { |
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2921
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429 while (list_index < name_list_len) |
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244
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430 { |
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2921
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431 string name = name_list[list_index]; |
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2247
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432 |
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1280
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433 list_index++; |
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2247
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434 |
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2921
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435 if (! name.compare (hint, 0, hint_len)) |
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1280
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436 { |
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2921
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437 int len = 2 + prefix_len + name.length (); |
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438 |
|
2800
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439 char *buf = static_cast<char *> (malloc (len)); |
|
1280
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440 |
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2921
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441 if (! prefix.empty ()) |
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1280
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442 { |
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2921
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443 strcpy (buf, prefix.c_str ()); |
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1280
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444 strcat (buf, "."); |
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2921
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445 strcat (buf, name.c_str ()); |
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1280
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446 } |
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447 else |
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2921
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448 strcpy (buf, name.c_str ()); |
|
1280
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449 |
|
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450 if (matches == 1 && looks_like_struct (buf)) |
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2927
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451 command_editor::set_completion_append_character ('.'); |
|
1280
|
452 else |
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2927
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453 command_editor::set_completion_append_character |
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|
454 (Vcompletion_append_char); |
|
1280
|
455 |
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456 return buf; |
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457 } |
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244
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458 } |
|
1
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459 } |
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460 |
|
529
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461 return 0; |
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1
|
462 } |
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463 |
|
2927
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464 #if 0 |
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269
|
465 static char ** |
|
1488
|
466 command_completer (char *text, int /* start */, int /* end */) |
|
1
|
467 { |
|
529
|
468 char **matches = 0; |
|
1
|
469 matches = completion_matches (text, command_generator); |
|
|
470 return matches; |
|
|
471 } |
|
2927
|
472 #endif |
|
269
|
473 |
|
2927
|
474 void |
|
|
475 initialize_command_input (void) |
|
|
476 { |
|
|
477 // If we are using readline, this allows conditional parsing of the |
|
|
478 // .inputrc file. |
|
269
|
479 |
|
2927
|
480 command_editor::set_name ("Octave"); |
|
1358
|
481 |
|
2927
|
482 command_editor::set_paren_string_delimiters ("\""); |
|
269
|
483 } |
|
|
484 |
|
2927
|
485 static bool |
|
|
486 match_sans_spaces (const string& standard, const string& test) |
|
269
|
487 { |
|
2927
|
488 string tmp = test; |
|
269
|
489 |
|
2927
|
490 size_t beg = test.find_first_not_of (" \t"); |
|
|
491 size_t end = test.find_last_not_of (" \t"); |
|
|
492 size_t len = beg - end + 1; |
|
1
|
493 |
|
2927
|
494 return test.compare (standard, beg, len) == 0; |
|
529
|
495 } |
|
|
496 |
|
581
|
497 // If the user simply hits return, this will produce an empty matrix. |
|
|
498 |
|
2086
|
499 static octave_value_list |
|
|
500 get_user_input (const octave_value_list& args, int debug = 0) |
|
529
|
501 { |
|
2086
|
502 octave_value retval; |
|
529
|
503 |
|
|
504 int nargin = args.length (); |
|
|
505 |
|
|
506 int read_as_string = 0; |
|
|
507 |
|
712
|
508 if (nargin == 2) |
|
529
|
509 read_as_string++; |
|
|
510 |
|
1761
|
511 string prompt ("debug> "); |
|
|
512 |
|
712
|
513 if (nargin > 0) |
|
529
|
514 { |
|
1761
|
515 prompt = args(0).string_value (); |
|
636
|
516 |
|
|
517 if (error_state) |
|
|
518 { |
|
|
519 error ("input: unrecognized argument"); |
|
|
520 return retval; |
|
|
521 } |
|
529
|
522 } |
|
|
523 |
|
|
524 again: |
|
|
525 |
|
2095
|
526 flush_octave_stdout (); |
|
529
|
527 |
|
2927
|
528 string input_buf = gnu_readline (prompt.c_str (), true); |
|
529
|
529 |
|
2927
|
530 if (! input_buf.empty ()) |
|
529
|
531 { |
|
1799
|
532 if (! input_from_startup_file) |
|
2927
|
533 command_history::add (input_buf); |
|
529
|
534 |
|
2927
|
535 size_t len = input_buf.length (); |
|
529
|
536 |
|
|
537 if (len < 1) |
|
|
538 { |
|
|
539 if (debug) |
|
|
540 goto again; |
|
|
541 else |
|
963
|
542 { |
|
|
543 if (read_as_string) |
|
|
544 return ""; |
|
|
545 else |
|
|
546 return Matrix (); |
|
|
547 } |
|
529
|
548 } |
|
|
549 |
|
|
550 if (match_sans_spaces ("exit", input_buf) |
|
|
551 || match_sans_spaces ("quit", input_buf) |
|
|
552 || match_sans_spaces ("return", input_buf)) |
|
963
|
553 { |
|
|
554 return retval; |
|
|
555 } |
|
529
|
556 else if (read_as_string) |
|
963
|
557 { |
|
|
558 retval = input_buf; |
|
|
559 } |
|
529
|
560 else |
|
|
561 { |
|
|
562 int parse_status = 0; |
|
2900
|
563 |
|
2896
|
564 retval = eval_string (input_buf, true, parse_status); |
|
2900
|
565 |
|
581
|
566 if (retval.is_defined ()) |
|
|
567 { |
|
|
568 if (debug) |
|
2900
|
569 retval.print (octave_stdout); |
|
581
|
570 } |
|
|
571 else |
|
963
|
572 retval = Matrix (); |
|
529
|
573 } |
|
|
574 } |
|
|
575 else |
|
|
576 error ("input: reading user-input failed!"); |
|
|
577 |
|
|
578 if (debug) |
|
|
579 goto again; |
|
|
580 |
|
|
581 return retval; |
|
|
582 } |
|
|
583 |
|
1957
|
584 DEFUN (input, args, , |
|
529
|
585 "input (PROMPT [, S])\n\ |
|
|
586 \n\ |
|
2802
|
587 Prompt user for input. If the second argument is present, return\n\ |
|
529
|
588 value as a string.") |
|
|
589 { |
|
2086
|
590 octave_value_list retval; |
|
529
|
591 |
|
|
592 int nargin = args.length (); |
|
|
593 |
|
712
|
594 if (nargin == 1 || nargin == 2) |
|
1488
|
595 retval = get_user_input (args); |
|
529
|
596 else |
|
|
597 print_usage ("input"); |
|
|
598 |
|
|
599 return retval; |
|
|
600 } |
|
|
601 |
|
1957
|
602 DEFUN (keyboard, args, , |
|
529
|
603 "keyboard (PROMPT)\n\ |
|
|
604 \n\ |
|
|
605 maybe help in debugging function files") |
|
|
606 { |
|
2086
|
607 octave_value_list retval; |
|
529
|
608 |
|
|
609 int nargin = args.length (); |
|
|
610 |
|
712
|
611 if (nargin == 0 || nargin == 1) |
|
1488
|
612 retval = get_user_input (args, 1); |
|
529
|
613 else |
|
|
614 print_usage ("keyboard"); |
|
|
615 |
|
|
616 return retval; |
|
|
617 } |
|
|
618 |
|
1957
|
619 DEFUN_TEXT(echo, args, , |
|
1588
|
620 "echo [options]\n\ |
|
|
621 \n\ |
|
|
622 echo [on|off] -- enable or disable echoing of commands as\n\ |
|
|
623 they are executed in script files\n\ |
|
|
624 \n\ |
|
|
625 echo [on all|off all] -- enable or disable echoing of commands as they\n\ |
|
|
626 are executed in script files and functions\n\ |
|
|
627 \n\ |
|
|
628 Without any arguments, toggle the current echo state.") |
|
|
629 { |
|
2086
|
630 octave_value_list retval; |
|
1588
|
631 |
|
1755
|
632 int argc = args.length () + 1; |
|
|
633 |
|
1968
|
634 string_vector argv = args.make_argv ("echo"); |
|
1755
|
635 |
|
|
636 if (error_state) |
|
|
637 return retval; |
|
1588
|
638 |
|
|
639 switch (argc) |
|
|
640 { |
|
|
641 case 1: |
|
|
642 { |
|
2205
|
643 if ((Vecho_executing_commands & ECHO_SCRIPTS) |
|
|
644 || (Vecho_executing_commands & ECHO_FUNCTIONS)) |
|
2431
|
645 bind_builtin_variable ("echo_executing_commands", |
|
2800
|
646 static_cast<double> (ECHO_OFF)); |
|
1588
|
647 else |
|
2431
|
648 bind_builtin_variable ("echo_executing_commands", |
|
2800
|
649 static_cast<double> (ECHO_SCRIPTS)); |
|
1588
|
650 } |
|
|
651 break; |
|
|
652 |
|
|
653 case 2: |
|
|
654 { |
|
1755
|
655 string arg = argv[1]; |
|
|
656 |
|
|
657 if (arg == "on") |
|
2431
|
658 bind_builtin_variable ("echo_executing_commands", |
|
2800
|
659 static_cast<double> (ECHO_SCRIPTS)); |
|
1755
|
660 else if (arg == "off") |
|
2431
|
661 bind_builtin_variable ("echo_executing_commands", |
|
2800
|
662 static_cast<double> (ECHO_OFF)); |
|
1588
|
663 else |
|
|
664 print_usage ("echo"); |
|
|
665 } |
|
|
666 break; |
|
|
667 |
|
|
668 case 3: |
|
|
669 { |
|
1755
|
670 string arg = argv[1]; |
|
|
671 |
|
|
672 if (arg == "on" && argv[2] == "all") |
|
2800
|
673 { |
|
|
674 int tmp = (ECHO_SCRIPTS | ECHO_FUNCTIONS); |
|
|
675 bind_builtin_variable ("echo_executing_commands", |
|
|
676 static_cast<double> (tmp)); |
|
|
677 } |
|
1755
|
678 else if (arg == "off" && argv[2] == "all") |
|
2431
|
679 bind_builtin_variable ("echo_executing_commands", |
|
2800
|
680 static_cast<double> (ECHO_OFF)); |
|
1588
|
681 else |
|
|
682 print_usage ("echo"); |
|
|
683 } |
|
|
684 break; |
|
|
685 |
|
|
686 default: |
|
|
687 print_usage ("echo"); |
|
|
688 break; |
|
|
689 } |
|
|
690 |
|
|
691 return retval; |
|
|
692 } |
|
|
693 |
|
2234
|
694 DEFUN (completion_matches, args, nargout, |
|
2299
|
695 "completion_matches (HINT): generate possible completions given HINT\n\ |
|
|
696 \n\ |
|
|
697 This function is provided for the benefit of programs like Emacs which\n\ |
|
|
698 might be controlling Octave and handling user input. The current command\n\ |
|
|
699 number is not incremented when this function is called. This is a feature,\n\ |
|
|
700 not a bug.") |
|
2234
|
701 { |
|
2281
|
702 octave_value retval; |
|
2234
|
703 |
|
|
704 int nargin = args.length (); |
|
|
705 |
|
|
706 if (nargin == 1) |
|
|
707 { |
|
|
708 string hint_string = args(0).string_value (); |
|
|
709 |
|
|
710 if (! error_state) |
|
|
711 { |
|
|
712 int n = 32; |
|
|
713 |
|
|
714 string_vector list (n); |
|
|
715 |
|
|
716 const char *hint = hint_string.c_str (); |
|
|
717 |
|
|
718 int k = 0; |
|
|
719 |
|
|
720 for (;;) |
|
|
721 { |
|
|
722 const char *cmd = command_generator (hint, k); |
|
|
723 |
|
|
724 if (cmd) |
|
|
725 { |
|
2235
|
726 if (*cmd) |
|
2234
|
727 { |
|
2235
|
728 if (k == n) |
|
|
729 { |
|
|
730 n *= 2; |
|
|
731 list.resize (n); |
|
|
732 } |
|
|
733 |
|
|
734 list[k++] = cmd; |
|
2234
|
735 } |
|
|
736 } |
|
|
737 else |
|
|
738 { |
|
|
739 list.resize (k); |
|
|
740 break; |
|
|
741 } |
|
|
742 } |
|
|
743 |
|
|
744 if (nargout > 0) |
|
2281
|
745 { |
|
|
746 if (! list.empty ()) |
|
|
747 retval = list; |
|
2282
|
748 else |
|
|
749 retval = ""; |
|
2281
|
750 } |
|
2234
|
751 else |
|
|
752 { |
|
2235
|
753 // We don't use string_vector::list_in_columns here |
|
|
754 // because it will be easier for Emacs if the names |
|
|
755 // appear in a single column. |
|
|
756 |
|
2234
|
757 int len = list.length (); |
|
|
758 |
|
|
759 for (int i = 0; i < len; i++) |
|
|
760 octave_stdout << list[i] << "\n"; |
|
|
761 } |
|
2299
|
762 |
|
|
763 octave_completion_matches_called = true; |
|
2234
|
764 } |
|
|
765 } |
|
|
766 else |
|
|
767 print_usage ("completion_matches"); |
|
|
768 |
|
|
769 return retval; |
|
|
770 } |
|
|
771 |
|
2181
|
772 static int |
|
|
773 ps1 (void) |
|
|
774 { |
|
|
775 int status = 0; |
|
|
776 |
|
|
777 Vps1 = builtin_string_variable ("PS1"); |
|
|
778 |
|
|
779 return status; |
|
|
780 } |
|
|
781 |
|
|
782 static int |
|
|
783 ps2 (void) |
|
|
784 { |
|
|
785 int status = 0; |
|
|
786 |
|
|
787 Vps2 = builtin_string_variable ("PS2"); |
|
|
788 |
|
|
789 return status; |
|
|
790 } |
|
|
791 |
|
|
792 static int |
|
|
793 ps4 (void) |
|
|
794 { |
|
|
795 int status = 0; |
|
|
796 |
|
|
797 Vps4 = builtin_string_variable ("PS4"); |
|
|
798 |
|
|
799 return status; |
|
|
800 } |
|
|
801 |
|
|
802 static int |
|
|
803 completion_append_char (void) |
|
|
804 { |
|
|
805 int status = 0; |
|
|
806 |
|
|
807 string s = builtin_string_variable ("completion_append_char"); |
|
|
808 |
|
|
809 switch (s.length ()) |
|
|
810 { |
|
|
811 case 1: |
|
|
812 Vcompletion_append_char = s[0]; |
|
|
813 break; |
|
|
814 |
|
|
815 case 0: |
|
|
816 Vcompletion_append_char = '\0'; |
|
|
817 break; |
|
|
818 |
|
|
819 default: |
|
|
820 warning ("completion_append_char must be a single character"); |
|
|
821 status = -1; |
|
|
822 break; |
|
|
823 } |
|
|
824 |
|
|
825 return status; |
|
|
826 } |
|
|
827 |
|
|
828 void |
|
|
829 symbols_of_input (void) |
|
|
830 { |
|
|
831 DEFVAR (PS1, "\\s:\\#> ", 0, ps1, |
|
|
832 "primary prompt string"); |
|
|
833 |
|
|
834 DEFVAR (PS2, "> ", 0, ps2, |
|
|
835 "secondary prompt string"); |
|
|
836 |
|
|
837 DEFVAR (PS4, "+ ", 0, ps4, |
|
|
838 "string printed before echoed input (enabled by --echo-input)"); |
|
|
839 |
|
|
840 DEFVAR (completion_append_char, " ", 0, completion_append_char, |
|
|
841 "the string to append after successful command-line completion attempts"); |
|
|
842 } |
|
|
843 |
|
1
|
844 /* |
|
|
845 ;;; Local Variables: *** |
|
|
846 ;;; mode: C++ *** |
|
|
847 ;;; End: *** |
|
|
848 */ |
