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1
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1 // input.cc -*- C++ -*- |
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2 /* |
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3 |
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269
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4 Copyright (C) 1992, 1993, 1994 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 2, or (at your option) any |
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11 later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, write to the Free |
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20 Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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21 |
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22 */ |
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23 |
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24 // Use the GNU readline library for command line editing and hisory. |
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25 |
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240
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26 #ifdef HAVE_CONFIG_H |
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27 #include "config.h" |
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1
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28 #endif |
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29 |
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529
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30 #include <sys/types.h> |
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31 #ifdef HAVE_UNISTD_H |
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32 #include <unistd.h> |
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33 #endif |
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34 #include <time.h> |
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1
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35 #include <stdio.h> |
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36 #include <stdlib.h> |
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195
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37 #include <iostream.h> |
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188
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38 #include <string.h> |
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1
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39 #include <assert.h> |
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40 |
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41 // This must come before anything that includes iostream.h... |
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42 extern "C" |
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43 { |
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44 #include "readline/readline.h" |
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269
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45 #include "readline/history.h" |
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1
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46 |
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271
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47 extern void free_undo_list (); |
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48 |
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252
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49 extern char *xmalloc (); |
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50 |
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1
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51 /* |
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52 * Yes, this sucks, but it avoids a conflict with another readline |
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53 * function declared in iostream.h. |
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54 */ |
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55 #if 0 |
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56 #define LINE_SIZE 8192 |
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529
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57 static int no_line_editing = 0; |
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1
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58 #endif |
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59 |
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60 char * |
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61 gnu_readline (char *s) |
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62 { |
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63 #if 0 |
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64 static int state = 0; |
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529
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65 static char *line_from_stdin = 0; |
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1
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66 if (no_line_editing) |
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67 { |
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68 if (! state) |
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69 { |
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70 line_from_stdin = (char *) malloc (LINE_SIZE); |
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71 state = 1; |
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72 } |
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73 fputs ("octave> ", stdout); |
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74 fgets (line_from_stdin, LINE_SIZE, stdin); |
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75 return line_from_stdin; |
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76 } |
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77 else |
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78 #endif |
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79 return readline (s); |
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80 } |
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81 } |
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82 |
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529
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83 #include "help.h" |
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1
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84 #include "error.h" |
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85 #include "utils.h" |
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86 #include "input.h" |
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87 #include "pager.h" |
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529
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88 #include "parse.h" |
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89 #include "dirfns.h" |
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90 #include "octave.h" |
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91 #include "variables.h" |
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92 #include "tree-const.h" |
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1
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93 #include "octave-hist.h" |
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94 #include "sighandlers.h" |
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95 #include "user-prefs.h" |
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529
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96 #include "oct-obj.h" |
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97 #include "defun.h" |
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98 |
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99 #ifndef MAXPATHLEN |
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100 #define MAXPATHLEN 1024 |
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101 #endif |
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102 |
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103 // The size that strings change by. |
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104 #ifndef DEFAULT_ARRAY_SIZE |
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105 #define DEFAULT_ARRAY_SIZE 512 |
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106 #endif |
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107 |
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108 // The growth rate for the prompt string. |
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109 #ifndef PROMPT_GROWTH |
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110 #define PROMPT_GROWTH 50 |
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111 #endif |
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1
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112 |
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113 // Global pointer for eval(). |
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529
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114 const char *current_eval_string = 0; |
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1
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115 |
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116 // Nonzero means get input from current_eval_string. |
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117 int get_input_from_eval_string = 0; |
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118 |
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338
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119 // Nonzero means we're parsing a function file. |
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120 int reading_fcn_file = 0; |
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1
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121 |
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338
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122 // Simple name of function file we are reading. |
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529
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123 char *curr_fcn_file_name = 0; |
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1
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124 |
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125 // Nonzero means we're parsing a script file. |
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126 int reading_script_file = 0; |
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127 |
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128 // If we are reading from an M-file, this is it. |
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529
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129 FILE *ff_instream = 0; |
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1
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130 |
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131 // Nonzero means we are using readline. |
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132 int using_readline = 1; |
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133 |
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134 // Nonzero means commands are echoed as they are executed (-x). |
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135 int echo_input = 0; |
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136 |
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137 // Nonzero means this is an interactive shell. |
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138 int interactive = 0; |
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139 |
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140 // Nonzero means the user forced this shell to be interactive (-i). |
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141 int forced_interactive = 0; |
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142 |
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143 // Should we issue a prompt? |
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144 int promptflag = 1; |
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145 |
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146 // The current line of input, from wherever. |
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529
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147 char *current_input_line = 0; |
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1
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148 |
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149 // A line of input from readline. |
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529
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150 static char *octave_gets_line = 0; |
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151 |
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152 extern tree_constant eval_string (const char *string, int print, |
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153 int ans_assign, int& parse_status); |
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154 |
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155 /* |
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156 * Append SOURCE to TARGET at INDEX. SIZE is the current amount of |
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157 * space allocated to TARGET. SOURCE can be NULL, in which case |
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158 * nothing happens. Gets rid of SOURCE by free ()ing it. Returns |
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159 * TARGET in case the location has changed. |
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160 */ |
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161 static char * |
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162 sub_append_string (char *source, char *target, int *index, int *size) |
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163 { |
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164 if (source) |
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165 { |
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166 while ((int)strlen (source) >= (int)(*size - *index)) |
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167 { |
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168 char *tmp = new char [*size += DEFAULT_ARRAY_SIZE]; |
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169 strcpy (tmp, target); |
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170 delete [] target; |
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171 target = tmp; |
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172 } |
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173 |
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174 strcat (target, source); |
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175 *index += strlen (source); |
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176 |
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177 delete [] source; |
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178 } |
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179 return target; |
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180 } |
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181 |
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182 /* |
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183 * Return the octal number parsed from STRING, or -1 to indicate that |
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184 * the string contained a bad number. |
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185 */ |
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186 int |
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187 read_octal (const char *string) |
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188 { |
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189 int result = 0; |
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190 int digits = 0; |
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191 |
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192 while (*string && *string >= '0' && *string < '8') |
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193 { |
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194 digits++; |
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195 result = (result * 8) + *string++ - '0'; |
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196 } |
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197 |
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198 if (! digits || result > 0777 || *string) |
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199 result = -1; |
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200 |
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201 return result; |
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202 } |
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203 |
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204 /* |
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205 * Return a string which will be printed as a prompt. The string may |
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206 * contain special characters which are decoded as follows: |
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207 * |
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208 * \t the time |
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209 * \d the date |
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210 * \n CRLF |
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211 * \s the name of the shell (program) |
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212 * \w the current working directory |
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213 * \W the last element of PWD |
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214 * \u your username |
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215 * \h the hostname |
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216 * \# the command number of this command |
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217 * \! the history number of this command |
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218 * \$ a $ or a # if you are root |
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219 * \<octal> character code in octal |
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220 * \\ a backslash |
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221 */ |
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222 static char * |
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223 decode_prompt_string (const char *string) |
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224 { |
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225 int result_size = PROMPT_GROWTH; |
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226 int result_index = 0; |
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227 char *result = new char [PROMPT_GROWTH]; |
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228 int c; |
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229 char *temp = 0; |
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230 |
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231 result[0] = 0; |
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232 while (c = *string++) |
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233 { |
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234 if (c == '\\') |
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235 { |
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236 c = *string; |
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237 |
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238 switch (c) |
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239 { |
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240 case '0': |
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241 case '1': |
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242 case '2': |
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243 case '3': |
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244 case '4': |
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245 case '5': |
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246 case '6': |
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247 case '7': |
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248 { |
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249 char octal_string[4]; |
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250 int n; |
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251 |
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252 strncpy (octal_string, string, 3); |
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253 octal_string[3] = '\0'; |
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254 |
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255 n = read_octal (octal_string); |
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256 |
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257 temp = strsave ("\\"); |
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258 if (n != -1) |
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259 { |
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260 string += 3; |
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261 temp[0] = n; |
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262 } |
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263 |
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264 c = 0; |
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265 goto add_string; |
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266 } |
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267 |
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268 case 't': |
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269 case 'd': |
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270 /* Make the current time/date into a string. */ |
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271 { |
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272 time_t the_time = time (0); |
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273 char *ttemp = ctime (&the_time); |
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274 temp = strsave (ttemp); |
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275 |
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276 if (c == 't') |
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277 { |
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278 strcpy (temp, temp + 11); |
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279 temp[8] = '\0'; |
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280 } |
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281 else |
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282 temp[10] = '\0'; |
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283 |
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284 goto add_string; |
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285 } |
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1
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286 |
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529
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287 case 'n': |
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288 if (! no_line_editing) |
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289 temp = strsave ("\r\n"); |
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290 else |
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291 temp = strsave ("\n"); |
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292 goto add_string; |
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293 |
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294 case 's': |
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295 { |
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296 temp = base_pathname (prog_name); |
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297 temp = strsave (temp); |
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298 goto add_string; |
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299 } |
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300 |
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301 case 'w': |
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302 case 'W': |
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303 { |
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304 char t_string[MAXPATHLEN]; |
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305 #define EFFICIENT |
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306 #ifdef EFFICIENT |
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307 |
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308 // Use the value of PWD because it is much more effecient. |
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309 |
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310 temp = user_pref.pwd; |
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311 |
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312 if (! temp) |
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313 getcwd (t_string, MAXPATHLEN); |
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314 else |
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315 strcpy (t_string, temp); |
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316 #else |
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317 getcwd (t_string, MAXPATHLEN); |
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318 #endif /* EFFICIENT */ |
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319 |
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320 if (c == 'W') |
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321 { |
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322 char *dir = strrchr (t_string, '/'); |
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323 if (dir && dir != t_string) |
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324 strcpy (t_string, dir + 1); |
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325 temp = strsave (t_string); |
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326 } |
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327 else |
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328 temp = strsave (polite_directory_format (t_string)); |
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329 goto add_string; |
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330 } |
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331 |
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332 case 'u': |
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333 { |
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334 temp = strsave (user_name); |
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335 |
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336 goto add_string; |
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337 } |
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338 |
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339 case 'h': |
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340 { |
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341 char *t_string; |
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342 |
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343 temp = strsave (host_name); |
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344 if (t_string = strchr (temp, '.')) |
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345 *t_string = '\0'; |
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346 |
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347 goto add_string; |
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348 } |
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349 |
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350 case '#': |
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351 { |
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352 char number_buffer[128]; |
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353 sprintf (number_buffer, "%d", current_command_number); |
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354 temp = strsave (number_buffer); |
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355 goto add_string; |
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356 } |
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357 |
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358 case '!': |
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359 { |
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360 char number_buffer[128]; |
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361 int num = current_history_number (); |
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362 if (num > 0) |
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363 sprintf (number_buffer, "%d", num); |
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364 else |
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365 strcpy (number_buffer, "!"); |
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366 temp = strsave (number_buffer); |
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367 goto add_string; |
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368 } |
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369 |
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370 case '$': |
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371 temp = strsave (geteuid () == 0 ? "#" : "$"); |
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372 goto add_string; |
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373 |
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374 case '\\': |
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375 temp = strsave ("\\"); |
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376 goto add_string; |
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377 |
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378 default: |
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379 temp = strsave ("\\ "); |
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380 temp[1] = c; |
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381 |
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382 add_string: |
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383 if (c) |
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384 string++; |
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385 result = |
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386 (char *)sub_append_string (temp, result, |
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387 &result_index, &result_size); |
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388 temp = 0; /* Free ()'ed in sub_append_string (). */ |
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389 result[result_index] = '\0'; |
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390 break; |
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391 } |
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392 } |
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393 else |
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394 { |
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395 while (3 + result_index > result_size) |
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396 { |
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397 char *tmp = new char [result_size += PROMPT_GROWTH]; |
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398 strcpy (tmp, result); |
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399 delete [] result; |
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400 result = tmp; |
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401 } |
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402 result[result_index++] = c; |
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403 result[result_index] = '\0'; |
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404 } |
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405 } |
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406 |
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407 #if 0 |
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408 /* I don't really think that this is a good idea. Do you? */ |
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409 if (! find_variable ("NO_PROMPT_VARS")) |
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410 { |
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411 WORD_LIST *expand_string (), *list; |
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412 char *string_list (); |
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413 |
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414 list = expand_string (result, 1); |
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415 free (result); |
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416 result = string_list (list); |
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417 dispose_words (list); |
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418 } |
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419 #endif |
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420 |
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421 return result; |
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422 } |
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1
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423 /* |
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424 * Use GNU readline to get an input line and store it in the history |
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425 * list. |
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426 */ |
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287
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427 static char * |
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1
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428 octave_gets (void) |
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429 { |
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529
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430 if (octave_gets_line) |
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126
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431 { |
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432 free (octave_gets_line); |
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529
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433 octave_gets_line = 0; |
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126
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434 } |
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1
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435 |
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436 if (interactive || forced_interactive) |
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437 { |
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438 char *ps = (promptflag > 0) ? user_pref.ps1 : user_pref.ps2; |
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439 char *prompt = decode_prompt_string (ps); |
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440 |
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441 if (interactive) |
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442 { |
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443 pipe_handler_error_count = 0; |
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444 flush_output_to_pager (); |
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445 } |
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446 |
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447 octave_gets_line = gnu_readline (prompt); |
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448 delete [] prompt; |
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449 } |
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450 else |
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451 octave_gets_line = gnu_readline (""); |
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452 |
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453 current_input_line = octave_gets_line; |
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454 |
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455 if (octave_gets_line && *octave_gets_line) |
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456 { |
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457 maybe_save_history (octave_gets_line); |
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458 |
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459 if (echo_input) |
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460 { |
|
287
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461 if (! forced_interactive) |
|
1
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462 cout << "+ "; |
|
287
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463 |
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464 cout << octave_gets_line << "\n"; |
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1
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465 } |
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466 } |
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467 return octave_gets_line; |
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468 } |
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469 |
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470 /* |
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471 * Read a line from the input stream. |
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472 */ |
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269
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473 int |
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1
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474 octave_read (char *buf, int max_size) |
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475 { |
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476 int status = 0; |
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477 |
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529
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478 static char *stashed_line = 0; |
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1
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479 |
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480 if (get_input_from_eval_string) |
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481 { |
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482 int len = strlen (current_eval_string); |
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483 if (len < max_size - 1) |
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484 { |
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485 strcpy (buf, current_eval_string); |
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486 buf[len++] = '\n'; |
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487 buf[len] = '\0'; // Paranoia. |
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488 status = len; |
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489 } |
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490 else |
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491 status = -1; |
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492 |
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493 if (stashed_line) |
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494 delete [] stashed_line; |
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495 |
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496 stashed_line = strsave (buf); |
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497 current_input_line = stashed_line; |
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498 } |
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499 else if (using_readline) |
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|
500 { |
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501 char *cp = octave_gets (); |
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529
|
502 if (cp) |
|
1
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503 { |
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|
504 int len = strlen (cp); |
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|
505 if (len >= max_size) |
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|
506 status = -1; |
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|
507 else |
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|
508 { |
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|
509 strcpy (buf, cp); |
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|
510 buf[len++] = '\n'; |
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|
511 buf[len] = '\0'; // Paranoia. |
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|
512 status = len; |
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|
513 } |
|
|
514 } |
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515 current_input_line = cp; |
|
|
516 } |
|
|
517 else |
|
|
518 { |
|
|
519 FILE *curr_stream = rl_instream; |
|
338
|
520 if (reading_fcn_file || reading_script_file) |
|
339
|
521 curr_stream = ff_instream; |
|
1
|
522 |
|
529
|
523 assert (curr_stream); |
|
1
|
524 |
|
|
525 // Why is this required? |
|
|
526 buf[0] = '\0'; |
|
|
527 |
|
529
|
528 if (fgets (buf, max_size, curr_stream)) |
|
1
|
529 { |
|
|
530 int len = strlen (buf); |
|
|
531 if (len > max_size - 2) |
|
|
532 status = -1; |
|
|
533 else |
|
|
534 { |
|
|
535 if (buf[len-1] != '\n') |
|
|
536 { |
|
|
537 buf[len++] = '\n'; |
|
|
538 buf[len] = '\0'; |
|
|
539 } |
|
|
540 status = len; |
|
|
541 } |
|
|
542 } |
|
|
543 else |
|
|
544 status = 0; // Tell yylex that we found EOF. |
|
|
545 |
|
|
546 if (stashed_line) |
|
|
547 delete [] stashed_line; |
|
|
548 |
|
|
549 stashed_line = strsave (buf); |
|
|
550 current_input_line = stashed_line; |
|
287
|
551 |
|
|
552 if (echo_input && current_input_line && *current_input_line) |
|
|
553 { |
|
|
554 if (! forced_interactive) |
|
|
555 cout << "+ "; |
|
|
556 |
|
|
557 cout << current_input_line << "\n"; |
|
|
558 } |
|
1
|
559 } |
|
|
560 input_line_number++; |
|
|
561 return status; |
|
|
562 } |
|
|
563 |
|
|
564 /* |
|
|
565 * Fix things up so that input can come from file `name', printing a |
|
|
566 * warning if the file doesn't exist. |
|
|
567 */ |
|
|
568 FILE * |
|
529
|
569 get_input_from_file (char *name, int warn) |
|
1
|
570 { |
|
529
|
571 FILE *instream = 0; |
|
1
|
572 |
|
|
573 if (name && *name) |
|
|
574 instream = fopen (name, "r"); |
|
|
575 |
|
529
|
576 if (! instream && warn) |
|
217
|
577 warning ("%s: no such file or directory", name); |
|
1
|
578 |
|
338
|
579 if (reading_fcn_file || reading_script_file) |
|
339
|
580 ff_instream = instream; |
|
1
|
581 else |
|
|
582 rl_instream = instream; |
|
|
583 |
|
|
584 return instream; |
|
|
585 } |
|
|
586 |
|
|
587 /* |
|
|
588 * Fix things up so that input can come from the standard input. This |
|
|
589 * may need to become much more complicated, which is why it's in a |
|
|
590 * separate function. |
|
|
591 */ |
|
|
592 FILE * |
|
|
593 get_input_from_stdin (void) |
|
|
594 { |
|
|
595 rl_instream = stdin; |
|
|
596 return rl_instream; |
|
|
597 } |
|
|
598 |
|
269
|
599 static char * |
|
1
|
600 command_generator (char *text, int state) |
|
|
601 { |
|
|
602 static int len = 0; |
|
|
603 static int list_index = 0; |
|
|
604 |
|
529
|
605 static char **name_list = 0; |
|
1
|
606 |
|
|
607 if (state == 0) |
|
|
608 { |
|
|
609 list_index = 0; |
|
|
610 len = strlen (text); |
|
|
611 |
|
529
|
612 if (name_list) |
|
244
|
613 { |
|
|
614 char **ptr = name_list; |
|
|
615 while (ptr && *ptr) |
|
|
616 delete [] *ptr++; |
|
|
617 delete [] name_list; |
|
|
618 } |
|
1
|
619 |
|
|
620 name_list = make_name_list (); |
|
|
621 } |
|
|
622 |
|
|
623 char *name; |
|
529
|
624 while ((name = name_list[list_index]) != 0) |
|
1
|
625 { |
|
|
626 list_index++; |
|
|
627 if (strncmp (name, text, len) == 0) |
|
244
|
628 { |
|
|
629 char *buf = xmalloc (1 + strlen (name)); |
|
|
630 strcpy (buf, name); |
|
|
631 return buf; |
|
|
632 } |
|
1
|
633 } |
|
|
634 |
|
529
|
635 return 0; |
|
1
|
636 } |
|
|
637 |
|
269
|
638 static char ** |
|
1
|
639 command_completer (char *text, int start, int end) |
|
|
640 { |
|
529
|
641 char **matches = 0; |
|
1
|
642 matches = completion_matches (text, command_generator); |
|
|
643 return matches; |
|
|
644 } |
|
|
645 |
|
269
|
646 /* |
|
|
647 * The next two functions implement the equivalent of the K*rn shell |
|
|
648 * C-o operate-and-get-next-history-line editing command. Stolen from |
|
|
649 * the GNU Bourne Again SHell. |
|
|
650 */ |
|
|
651 |
|
|
652 // ?? |
|
|
653 static int saved_history_line_to_use = 0; |
|
|
654 |
|
|
655 // ?? |
|
529
|
656 static Function *old_rl_startup_hook = 0; |
|
269
|
657 |
|
|
658 static void |
|
|
659 set_saved_history (void) |
|
|
660 { |
|
|
661 HIST_ENTRY *h; |
|
|
662 |
|
|
663 if (saved_history_line_to_use) |
|
|
664 { |
|
|
665 if (history_set_pos (saved_history_line_to_use)) |
|
|
666 { |
|
|
667 h = current_history (); |
|
|
668 if (h) |
|
|
669 { |
|
|
670 rl_insert_text (h->line); |
|
|
671 |
|
|
672 // Get rid of any undo list created by the previous insert, so the |
|
|
673 // line won't totally be erased when the edits are undone (they will |
|
|
674 // be normally, because this is a history line -- cf. readline.c: |
|
|
675 // line 380 or so). |
|
|
676 if (rl_undo_list) |
|
|
677 { |
|
|
678 free_undo_list (); |
|
529
|
679 rl_undo_list = 0; |
|
269
|
680 } |
|
|
681 } |
|
|
682 } |
|
|
683 } |
|
|
684 saved_history_line_to_use = 0; |
|
|
685 rl_startup_hook = old_rl_startup_hook; |
|
|
686 } |
|
|
687 |
|
|
688 static void |
|
|
689 operate_and_get_next (int count, int c) |
|
|
690 { |
|
|
691 int where; |
|
|
692 extern int history_stifled, history_length, max_input_history; |
|
|
693 |
|
|
694 /* Accept the current line. */ |
|
|
695 rl_newline (); |
|
|
696 |
|
|
697 /* Find the current line, and find the next line to use. */ |
|
|
698 where = where_history (); |
|
|
699 |
|
|
700 if (history_stifled && (history_length >= max_input_history)) |
|
|
701 saved_history_line_to_use = where; |
|
|
702 else |
|
|
703 saved_history_line_to_use = where + 1; |
|
|
704 |
|
|
705 old_rl_startup_hook = rl_startup_hook; |
|
|
706 rl_startup_hook = (Function *) set_saved_history; |
|
|
707 } |
|
|
708 |
|
1
|
709 void |
|
|
710 initialize_readline (void) |
|
|
711 { |
|
|
712 // Allow conditional parsing of the ~/.inputrc file |
|
|
713 rl_readline_name = "Octave"; |
|
|
714 |
|
|
715 // Tell the completer that we want to try first. |
|
271
|
716 rl_attempted_completion_function = (CPPFunction *) command_completer; |
|
269
|
717 |
|
|
718 // Bind operate-and-get-next. |
|
|
719 rl_add_defun ("operate-and-get-next", |
|
|
720 (Function *) operate_and_get_next, CTRL ('O')); |
|
1
|
721 } |
|
|
722 |
|
529
|
723 static int |
|
|
724 match_sans_spaces (const char *standard, const char *test) |
|
|
725 { |
|
|
726 const char *tp = test; |
|
|
727 while (*tp == ' ' || *tp == '\t') |
|
|
728 tp++; |
|
|
729 |
|
|
730 const char *ep = test + strlen (test) - 1; |
|
|
731 while (*ep == ' ' || *ep == '\t') |
|
|
732 ep--; |
|
|
733 |
|
|
734 int len = ep - tp + 1; |
|
|
735 |
|
|
736 return (strncmp (standard, tp, len) == 0); |
|
|
737 } |
|
|
738 |
|
|
739 static Octave_object |
|
|
740 get_user_input (const Octave_object& args, int nargout, int debug = 0) |
|
|
741 { |
|
|
742 tree_constant retval; |
|
|
743 |
|
|
744 int nargin = args.length (); |
|
|
745 |
|
|
746 int read_as_string = 0; |
|
|
747 |
|
|
748 if (nargin == 3) |
|
|
749 read_as_string++; |
|
|
750 |
|
|
751 char *prompt = "debug> "; |
|
|
752 if (nargin > 1) |
|
|
753 { |
|
|
754 if (args(1).is_string_type ()) |
|
|
755 prompt = args(1).string_value (); |
|
|
756 else |
|
|
757 { |
|
|
758 error ("input: unrecognized argument"); |
|
|
759 return retval; |
|
|
760 } |
|
|
761 } |
|
|
762 |
|
|
763 again: |
|
|
764 |
|
|
765 flush_output_to_pager (); |
|
|
766 |
|
|
767 char *input_buf = gnu_readline (prompt); |
|
|
768 |
|
|
769 if (input_buf) |
|
|
770 { |
|
|
771 maybe_save_history (input_buf); |
|
|
772 |
|
|
773 int len = strlen (input_buf); |
|
|
774 |
|
|
775 if (len < 1) |
|
|
776 { |
|
|
777 if (debug) |
|
|
778 goto again; |
|
|
779 else |
|
|
780 return retval; |
|
|
781 } |
|
|
782 |
|
|
783 if (match_sans_spaces ("exit", input_buf) |
|
|
784 || match_sans_spaces ("quit", input_buf) |
|
|
785 || match_sans_spaces ("return", input_buf)) |
|
|
786 return tree_constant (); |
|
|
787 else if (read_as_string) |
|
|
788 retval = input_buf; |
|
|
789 else |
|
|
790 { |
|
|
791 int parse_status = 0; |
|
|
792 retval = eval_string (input_buf, 0, 0, parse_status); |
|
|
793 if (debug && retval.is_defined ()) |
|
|
794 retval.eval (1); |
|
|
795 } |
|
|
796 } |
|
|
797 else |
|
|
798 error ("input: reading user-input failed!"); |
|
|
799 |
|
|
800 if (debug) |
|
|
801 goto again; |
|
|
802 |
|
|
803 return retval; |
|
|
804 } |
|
|
805 |
|
|
806 DEFUN ("input", Finput, Sinput, 3, 1, |
|
|
807 "input (PROMPT [, S])\n\ |
|
|
808 \n\ |
|
|
809 Prompt user for input. If the second argument is present, return |
|
|
810 value as a string.") |
|
|
811 { |
|
|
812 Octave_object retval; |
|
|
813 |
|
|
814 int nargin = args.length (); |
|
|
815 |
|
|
816 if (nargin == 2 || nargin == 3) |
|
|
817 retval = get_user_input (args, nargout); |
|
|
818 else |
|
|
819 print_usage ("input"); |
|
|
820 |
|
|
821 return retval; |
|
|
822 } |
|
|
823 |
|
|
824 DEFUN ("keyboard", Fkeyboard, Skeyboard, 2, 1, |
|
|
825 "keyboard (PROMPT)\n\ |
|
|
826 \n\ |
|
|
827 maybe help in debugging function files") |
|
|
828 { |
|
|
829 Octave_object retval; |
|
|
830 |
|
|
831 int nargin = args.length (); |
|
|
832 |
|
|
833 if (nargin == 1 || nargin == 2) |
|
|
834 retval = get_user_input (args, nargout, 1); |
|
|
835 else |
|
|
836 print_usage ("keyboard"); |
|
|
837 |
|
|
838 return retval; |
|
|
839 } |
|
|
840 |
|
1
|
841 /* |
|
|
842 ;;; Local Variables: *** |
|
|
843 ;;; mode: C++ *** |
|
|
844 ;;; page-delimiter: "^/\\*" *** |
|
|
845 ;;; End: *** |
|
|
846 */ |
