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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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1009
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4 Copyright (C) 1992, 1993, 1994, 1995 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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1315
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20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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21 |
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22 */ |
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23 |
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661
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24 /* |
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25 |
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26 The 3 functions listed below were adapted from similar functions |
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27 from GNU Bash, the Bourne Again SHell, copyright (C) 1987, 1989, 1991 |
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28 Free Software Foundation, Inc. |
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29 |
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30 read_octal sub_append_string decode_prompt_string |
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31 |
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32 */ |
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33 |
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1
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34 // Use the GNU readline library for command line editing and hisory. |
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35 |
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240
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36 #ifdef HAVE_CONFIG_H |
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1192
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37 #include <config.h> |
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1
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38 #endif |
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39 |
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1343
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40 #include <ctime> |
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41 #include <cstdio> |
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42 #include <cstdlib> |
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43 #include <cstring> |
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44 #include <cassert> |
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45 #include <csignal> |
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46 |
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1349
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47 #include <iostream.h> |
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48 #include <strstream.h> |
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49 |
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529
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50 #include <sys/types.h> |
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51 #ifdef HAVE_UNISTD_H |
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52 #include <unistd.h> |
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53 #endif |
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1343
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54 |
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1
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55 // This must come before anything that includes iostream.h... |
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56 extern "C" |
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57 { |
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58 #include "readline/readline.h" |
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269
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59 #include "readline/history.h" |
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1
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60 |
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271
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61 extern void free_undo_list (); |
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62 |
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252
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63 extern char *xmalloc (); |
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64 |
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581
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65 // Yes, this sucks, but it avoids a conflict with another readline |
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66 // function declared in iostream.h. |
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67 |
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1
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68 #if 0 |
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69 #define LINE_SIZE 8192 |
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529
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70 static int no_line_editing = 0; |
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1
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71 #endif |
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72 |
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73 char * |
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74 gnu_readline (char *s) |
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75 { |
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76 #if 0 |
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77 static int state = 0; |
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529
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78 static char *line_from_stdin = 0; |
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1
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79 if (no_line_editing) |
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80 { |
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81 if (! state) |
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82 { |
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83 line_from_stdin = (char *) malloc (LINE_SIZE); |
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84 state = 1; |
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85 } |
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86 fputs ("octave> ", stdout); |
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87 fgets (line_from_stdin, LINE_SIZE, stdin); |
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88 return line_from_stdin; |
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89 } |
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90 else |
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91 #endif |
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92 return readline (s); |
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93 } |
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94 } |
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95 |
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1349
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96 #include "pathlen.h" |
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529
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97 #include "help.h" |
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1
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98 #include "error.h" |
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99 #include "utils.h" |
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100 #include "input.h" |
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101 #include "pager.h" |
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529
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102 #include "parse.h" |
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103 #include "dirfns.h" |
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104 #include "octave.h" |
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1114
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105 #include "sysdep.h" |
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529
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106 #include "variables.h" |
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107 #include "tree-const.h" |
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1
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108 #include "octave-hist.h" |
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109 #include "sighandlers.h" |
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110 #include "user-prefs.h" |
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529
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111 #include "oct-obj.h" |
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1280
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112 #include "oct-map.h" |
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113 #include "symtab.h" |
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529
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114 #include "defun.h" |
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115 |
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116 // The size that strings change by. |
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117 #ifndef DEFAULT_ARRAY_SIZE |
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118 #define DEFAULT_ARRAY_SIZE 512 |
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119 #endif |
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120 |
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121 // The growth rate for the prompt string. |
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122 #ifndef PROMPT_GROWTH |
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123 #define PROMPT_GROWTH 50 |
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124 #endif |
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1
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125 |
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126 // Global pointer for eval(). |
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529
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127 const char *current_eval_string = 0; |
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1
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128 |
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129 // Nonzero means get input from current_eval_string. |
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130 int get_input_from_eval_string = 0; |
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131 |
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338
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132 // Nonzero means we're parsing a function file. |
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133 int reading_fcn_file = 0; |
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1
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134 |
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338
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135 // Simple name of function file we are reading. |
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529
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136 char *curr_fcn_file_name = 0; |
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1
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137 |
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138 // Nonzero means we're parsing a script file. |
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139 int reading_script_file = 0; |
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140 |
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141 // If we are reading from an M-file, this is it. |
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529
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142 FILE *ff_instream = 0; |
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1
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143 |
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144 // Nonzero means we are using readline. |
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145 int using_readline = 1; |
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146 |
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616
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147 // Nonzero means commands are echoed as they are executed. |
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148 // (--echo-commands; -x). |
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1
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149 int echo_input = 0; |
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150 |
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151 // Nonzero means this is an interactive shell. |
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152 int interactive = 0; |
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153 |
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154 // Nonzero means the user forced this shell to be interactive (-i). |
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155 int forced_interactive = 0; |
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156 |
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157 // Should we issue a prompt? |
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158 int promptflag = 1; |
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159 |
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160 // The current line of input, from wherever. |
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529
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161 char *current_input_line = 0; |
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1
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162 |
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163 // A line of input from readline. |
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529
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164 static char *octave_gets_line = 0; |
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165 |
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166 extern tree_constant eval_string (const char *string, int print, |
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167 int ans_assign, int& parse_status); |
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168 |
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581
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169 // Append SOURCE to TARGET at INDEX. SIZE is the current amount of |
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170 // space allocated to TARGET. SOURCE can be NULL, in which case |
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171 // nothing happens. Gets rid of SOURCE by free ()ing it. Returns |
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172 // TARGET in case the location has changed. |
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173 |
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529
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174 static char * |
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175 sub_append_string (char *source, char *target, int *index, int *size) |
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176 { |
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177 if (source) |
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178 { |
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179 while ((int)strlen (source) >= (int)(*size - *index)) |
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180 { |
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181 char *tmp = new char [*size += DEFAULT_ARRAY_SIZE]; |
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182 strcpy (tmp, target); |
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183 delete [] target; |
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184 target = tmp; |
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185 } |
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186 |
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187 strcat (target, source); |
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188 *index += strlen (source); |
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189 |
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190 delete [] source; |
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191 } |
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192 return target; |
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193 } |
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194 |
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581
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195 // Return the octal number parsed from STRING, or -1 to indicate that |
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196 // the string contained a bad number. |
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197 |
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529
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198 int |
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199 read_octal (const char *string) |
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200 { |
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201 int result = 0; |
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202 int digits = 0; |
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203 |
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204 while (*string && *string >= '0' && *string < '8') |
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205 { |
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206 digits++; |
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207 result = (result * 8) + *string++ - '0'; |
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208 } |
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209 |
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210 if (! digits || result > 0777 || *string) |
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211 result = -1; |
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212 |
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213 return result; |
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214 } |
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215 |
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581
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216 // Return a string which will be printed as a prompt. The string may |
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217 // contain special characters which are decoded as follows: |
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218 // |
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219 // \t the time |
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220 // \d the date |
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221 // \n CRLF |
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222 // \s the name of the shell (program) |
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223 // \w the current working directory |
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224 // \W the last element of PWD |
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225 // \u your username |
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226 // \h the hostname |
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227 // \# the command number of this command |
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228 // \! the history number of this command |
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229 // \$ a $ or a # if you are root |
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230 // \<octal> character code in octal |
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231 // \\ a backslash |
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232 |
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529
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233 static char * |
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234 decode_prompt_string (const char *string) |
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235 { |
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236 int result_size = PROMPT_GROWTH; |
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237 int result_index = 0; |
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238 char *result = new char [PROMPT_GROWTH]; |
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239 int c; |
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240 char *temp = 0; |
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241 |
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242 result[0] = 0; |
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1215
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243 while ((c = *string++)) |
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529
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244 { |
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245 if (c == '\\') |
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246 { |
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247 c = *string; |
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248 |
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249 switch (c) |
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250 { |
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251 case '0': |
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252 case '1': |
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253 case '2': |
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254 case '3': |
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255 case '4': |
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256 case '5': |
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257 case '6': |
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258 case '7': |
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259 { |
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260 char octal_string[4]; |
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261 int n; |
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262 |
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263 strncpy (octal_string, string, 3); |
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264 octal_string[3] = '\0'; |
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265 |
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266 n = read_octal (octal_string); |
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267 |
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268 temp = strsave ("\\"); |
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269 if (n != -1) |
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270 { |
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271 string += 3; |
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272 temp[0] = n; |
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273 } |
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274 |
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275 c = 0; |
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276 goto add_string; |
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277 } |
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278 |
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279 case 't': |
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280 case 'd': |
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281 /* Make the current time/date into a string. */ |
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282 { |
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283 time_t the_time = time (0); |
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284 char *ttemp = ctime (&the_time); |
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285 temp = strsave (ttemp); |
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286 |
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287 if (c == 't') |
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288 { |
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289 strcpy (temp, temp + 11); |
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290 temp[8] = '\0'; |
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291 } |
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292 else |
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293 temp[10] = '\0'; |
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294 |
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295 goto add_string; |
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296 } |
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1
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297 |
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529
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298 case 'n': |
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299 if (! no_line_editing) |
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300 temp = strsave ("\r\n"); |
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301 else |
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302 temp = strsave ("\n"); |
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303 goto add_string; |
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304 |
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305 case 's': |
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306 { |
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307 temp = base_pathname (prog_name); |
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308 temp = strsave (temp); |
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309 goto add_string; |
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310 } |
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311 |
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312 case 'w': |
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313 case 'W': |
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314 { |
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315 char t_string[MAXPATHLEN]; |
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316 #define EFFICIENT |
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317 #ifdef EFFICIENT |
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318 |
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319 // Use the value of PWD because it is much more effecient. |
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320 |
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321 temp = user_pref.pwd; |
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322 |
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323 if (! temp) |
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1112
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324 octave_getcwd (t_string, MAXPATHLEN); |
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529
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325 else |
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326 strcpy (t_string, temp); |
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327 #else |
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1112
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328 octave_getcwd (t_string, MAXPATHLEN); |
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529
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329 #endif /* EFFICIENT */ |
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330 |
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331 if (c == 'W') |
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332 { |
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333 char *dir = strrchr (t_string, '/'); |
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334 if (dir && dir != t_string) |
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335 strcpy (t_string, dir + 1); |
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336 temp = strsave (t_string); |
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337 } |
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338 else |
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339 temp = strsave (polite_directory_format (t_string)); |
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340 goto add_string; |
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341 } |
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342 |
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343 case 'u': |
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344 { |
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345 temp = strsave (user_name); |
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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 'h': |
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351 { |
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352 char *t_string; |
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353 |
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354 temp = strsave (host_name); |
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1215
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355 t_string = strchr (temp, '.'); |
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356 if (t_string); |
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529
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357 *t_string = '\0'; |
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358 |
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359 goto add_string; |
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360 } |
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361 |
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362 case '#': |
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363 { |
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364 char number_buffer[128]; |
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365 sprintf (number_buffer, "%d", current_command_number); |
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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 { |
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372 char number_buffer[128]; |
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373 int num = current_history_number (); |
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374 if (num > 0) |
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375 sprintf (number_buffer, "%d", num); |
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376 else |
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377 strcpy (number_buffer, "!"); |
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378 temp = strsave (number_buffer); |
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379 goto add_string; |
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380 } |
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381 |
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382 case '$': |
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383 temp = strsave (geteuid () == 0 ? "#" : "$"); |
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384 goto add_string; |
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385 |
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386 case '\\': |
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387 temp = strsave ("\\"); |
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388 goto add_string; |
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389 |
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390 default: |
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391 temp = strsave ("\\ "); |
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392 temp[1] = c; |
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393 |
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394 add_string: |
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395 if (c) |
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396 string++; |
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397 result = |
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398 (char *)sub_append_string (temp, result, |
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399 &result_index, &result_size); |
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581
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400 temp = 0; // Free ()'ed in sub_append_string (). |
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529
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401 result[result_index] = '\0'; |
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402 break; |
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403 } |
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404 } |
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405 else |
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406 { |
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407 while (3 + result_index > result_size) |
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408 { |
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409 char *tmp = new char [result_size += PROMPT_GROWTH]; |
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410 strcpy (tmp, result); |
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411 delete [] result; |
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412 result = tmp; |
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413 } |
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414 result[result_index++] = c; |
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415 result[result_index] = '\0'; |
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416 } |
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417 } |
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418 |
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419 #if 0 |
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581
|
420 // I don't really think that this is a good idea. Do you? |
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529
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421 if (! find_variable ("NO_PROMPT_VARS")) |
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422 { |
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423 WORD_LIST *expand_string (), *list; |
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424 char *string_list (); |
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425 |
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426 list = expand_string (result, 1); |
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427 free (result); |
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428 result = string_list (list); |
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429 dispose_words (list); |
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430 } |
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431 #endif |
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432 |
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433 return result; |
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|
434 } |
|
581
|
435 |
|
1044
|
436 static void |
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|
437 do_input_echo (const char *input_string) |
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|
438 { |
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439 if (echo_input) |
|
|
440 { |
|
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441 ostrstream buf; |
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442 |
|
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443 if (! forced_interactive) |
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|
444 { |
|
|
445 char *prefix = decode_prompt_string (user_pref.ps4); |
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|
446 buf << prefix; |
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447 delete [] prefix; |
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|
448 } |
|
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449 |
|
|
450 if (input_string) |
|
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451 { |
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|
452 buf << input_string; |
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453 int len = strlen (input_string); |
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|
454 if (input_string[len-1] != '\n') |
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455 buf << "\n"; |
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|
456 } |
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|
457 |
|
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458 maybe_page_output (buf); |
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|
459 } |
|
|
460 } |
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|
461 |
|
581
|
462 // Use GNU readline to get an input line and store it in the history |
|
|
463 // list. |
|
|
464 |
|
287
|
465 static char * |
|
1
|
466 octave_gets (void) |
|
|
467 { |
|
529
|
468 if (octave_gets_line) |
|
126
|
469 { |
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|
470 free (octave_gets_line); |
|
529
|
471 octave_gets_line = 0; |
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126
|
472 } |
|
1
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473 |
|
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474 if (interactive || forced_interactive) |
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|
475 { |
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|
476 char *ps = (promptflag > 0) ? user_pref.ps1 : user_pref.ps2; |
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|
477 char *prompt = decode_prompt_string (ps); |
|
|
478 |
|
|
479 if (interactive) |
|
|
480 { |
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|
481 pipe_handler_error_count = 0; |
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|
482 flush_output_to_pager (); |
|
|
483 } |
|
|
484 |
|
581
|
485 maybe_write_to_diary_file (prompt); |
|
|
486 |
|
1
|
487 octave_gets_line = gnu_readline (prompt); |
|
581
|
488 |
|
1
|
489 delete [] prompt; |
|
|
490 } |
|
|
491 else |
|
|
492 octave_gets_line = gnu_readline (""); |
|
|
493 |
|
|
494 current_input_line = octave_gets_line; |
|
|
495 |
|
|
496 if (octave_gets_line && *octave_gets_line) |
|
|
497 { |
|
|
498 maybe_save_history (octave_gets_line); |
|
|
499 |
|
581
|
500 maybe_write_to_diary_file (octave_gets_line); |
|
|
501 |
|
1044
|
502 do_input_echo (octave_gets_line); |
|
1
|
503 } |
|
581
|
504 |
|
|
505 maybe_write_to_diary_file ("\n"); |
|
|
506 |
|
1
|
507 return octave_gets_line; |
|
|
508 } |
|
|
509 |
|
581
|
510 // Read a line from the input stream. |
|
|
511 |
|
269
|
512 int |
|
1
|
513 octave_read (char *buf, int max_size) |
|
|
514 { |
|
|
515 int status = 0; |
|
|
516 |
|
529
|
517 static char *stashed_line = 0; |
|
1
|
518 |
|
|
519 if (get_input_from_eval_string) |
|
|
520 { |
|
|
521 int len = strlen (current_eval_string); |
|
|
522 if (len < max_size - 1) |
|
|
523 { |
|
|
524 strcpy (buf, current_eval_string); |
|
|
525 buf[len++] = '\n'; |
|
|
526 buf[len] = '\0'; // Paranoia. |
|
|
527 status = len; |
|
|
528 } |
|
|
529 else |
|
|
530 status = -1; |
|
|
531 |
|
|
532 if (stashed_line) |
|
|
533 delete [] stashed_line; |
|
|
534 |
|
|
535 stashed_line = strsave (buf); |
|
|
536 current_input_line = stashed_line; |
|
|
537 } |
|
|
538 else if (using_readline) |
|
|
539 { |
|
|
540 char *cp = octave_gets (); |
|
529
|
541 if (cp) |
|
1
|
542 { |
|
|
543 int len = strlen (cp); |
|
|
544 if (len >= max_size) |
|
|
545 status = -1; |
|
|
546 else |
|
|
547 { |
|
|
548 strcpy (buf, cp); |
|
|
549 buf[len++] = '\n'; |
|
|
550 buf[len] = '\0'; // Paranoia. |
|
|
551 status = len; |
|
|
552 } |
|
|
553 } |
|
|
554 current_input_line = cp; |
|
|
555 } |
|
|
556 else |
|
|
557 { |
|
|
558 FILE *curr_stream = rl_instream; |
|
338
|
559 if (reading_fcn_file || reading_script_file) |
|
339
|
560 curr_stream = ff_instream; |
|
1
|
561 |
|
529
|
562 assert (curr_stream); |
|
1
|
563 |
|
|
564 // Why is this required? |
|
|
565 buf[0] = '\0'; |
|
|
566 |
|
529
|
567 if (fgets (buf, max_size, curr_stream)) |
|
1
|
568 { |
|
|
569 int len = strlen (buf); |
|
|
570 if (len > max_size - 2) |
|
|
571 status = -1; |
|
|
572 else |
|
|
573 { |
|
|
574 if (buf[len-1] != '\n') |
|
|
575 { |
|
|
576 buf[len++] = '\n'; |
|
|
577 buf[len] = '\0'; |
|
|
578 } |
|
|
579 status = len; |
|
|
580 } |
|
|
581 } |
|
|
582 else |
|
|
583 status = 0; // Tell yylex that we found EOF. |
|
|
584 |
|
|
585 if (stashed_line) |
|
|
586 delete [] stashed_line; |
|
|
587 |
|
|
588 stashed_line = strsave (buf); |
|
1044
|
589 |
|
1
|
590 current_input_line = stashed_line; |
|
287
|
591 |
|
1044
|
592 do_input_echo (current_input_line); |
|
|
593 } |
|
287
|
594 |
|
1
|
595 input_line_number++; |
|
1044
|
596 |
|
1
|
597 return status; |
|
|
598 } |
|
|
599 |
|
581
|
600 // Fix things up so that input can come from file `name', printing a |
|
|
601 // warning if the file doesn't exist. |
|
|
602 |
|
1
|
603 FILE * |
|
529
|
604 get_input_from_file (char *name, int warn) |
|
1
|
605 { |
|
529
|
606 FILE *instream = 0; |
|
1
|
607 |
|
|
608 if (name && *name) |
|
|
609 instream = fopen (name, "r"); |
|
|
610 |
|
529
|
611 if (! instream && warn) |
|
217
|
612 warning ("%s: no such file or directory", name); |
|
1
|
613 |
|
338
|
614 if (reading_fcn_file || reading_script_file) |
|
339
|
615 ff_instream = instream; |
|
1
|
616 else |
|
|
617 rl_instream = instream; |
|
|
618 |
|
|
619 return instream; |
|
|
620 } |
|
|
621 |
|
581
|
622 // Fix things up so that input can come from the standard input. This |
|
|
623 // may need to become much more complicated, which is why it's in a |
|
|
624 // separate function. |
|
|
625 |
|
1
|
626 FILE * |
|
|
627 get_input_from_stdin (void) |
|
|
628 { |
|
|
629 rl_instream = stdin; |
|
|
630 return rl_instream; |
|
|
631 } |
|
|
632 |
|
1280
|
633 static char ** |
|
|
634 generate_struct_completions (const char *text, char *& prefix, |
|
|
635 char *& hint) |
|
|
636 { |
|
|
637 char **names = 0; |
|
|
638 |
|
1288
|
639 assert (text); |
|
|
640 |
|
1280
|
641 char *id = strsave (text); |
|
|
642 char *ptr = strchr (id, '.'); |
|
|
643 *ptr = '\0'; |
|
|
644 |
|
|
645 char *elts = ptr + 1; |
|
|
646 ptr = strrchr (elts, '.'); |
|
|
647 if (ptr) |
|
|
648 *ptr = '\0'; |
|
|
649 else |
|
|
650 elts = 0; |
|
|
651 |
|
|
652 prefix = strsave (text); |
|
|
653 ptr = strrchr (prefix, '.'); |
|
|
654 *ptr = '\0'; |
|
|
655 |
|
1288
|
656 delete [] hint; |
|
1280
|
657 hint = strsave (ptr + 1); |
|
|
658 |
|
|
659 symbol_record *sr = curr_sym_tab->lookup (id, 0, 0); |
|
|
660 if (! sr) |
|
|
661 sr = global_sym_tab->lookup (id, 0, 0); |
|
|
662 |
|
|
663 if (sr && sr->is_defined ()) |
|
|
664 { |
|
|
665 tree_fvc *tmp_fvc = sr->def (); |
|
|
666 |
|
|
667 tree_constant *def = 0; |
|
|
668 if (tmp_fvc->is_constant ()) |
|
|
669 def = (tree_constant *) tmp_fvc; |
|
|
670 |
|
|
671 if (def && def->is_map ()) |
|
|
672 { |
|
|
673 if (elts && *elts) |
|
|
674 { |
|
|
675 tree_constant ult = def->lookup_map_element (elts, 0, 1); |
|
|
676 |
|
|
677 if (ult.is_map ()) |
|
|
678 { |
|
|
679 Octave_map m = ult.map_value (); |
|
|
680 names = m.make_name_list (); |
|
|
681 } |
|
|
682 } |
|
|
683 else |
|
|
684 { |
|
|
685 Octave_map m = def->map_value (); |
|
|
686 names = m.make_name_list (); |
|
|
687 } |
|
|
688 } |
|
|
689 } |
|
|
690 |
|
|
691 delete [] id; |
|
|
692 |
|
|
693 return names; |
|
|
694 } |
|
|
695 |
|
|
696 static char ** |
|
|
697 generate_possible_completions (const char *text, char *& prefix, |
|
|
698 char *& hint) |
|
1
|
699 { |
|
1280
|
700 char **names = 0; |
|
|
701 |
|
|
702 prefix = 0; |
|
|
703 |
|
|
704 if (text && *text && *text != '.') |
|
|
705 { |
|
|
706 if (strrchr (text, '.')) |
|
1288
|
707 names = generate_struct_completions (text, prefix, hint); |
|
1280
|
708 else |
|
1288
|
709 names = make_name_list (); |
|
1280
|
710 } |
|
|
711 |
|
|
712 return names; |
|
|
713 } |
|
|
714 |
|
|
715 static int |
|
|
716 looks_like_struct (const char *nm) |
|
|
717 { |
|
|
718 int retval = 0; |
|
|
719 |
|
1288
|
720 assert (nm); |
|
|
721 |
|
1280
|
722 char *id = strsave (nm); |
|
|
723 char *elts = 0; |
|
|
724 char *ptr = strchr (id, '.'); |
|
|
725 if (ptr) |
|
|
726 { |
|
|
727 *ptr = '\0'; |
|
|
728 elts = ptr + 1; |
|
|
729 } |
|
|
730 |
|
|
731 symbol_record *sr = curr_sym_tab->lookup (id, 0, 0); |
|
|
732 if (! sr) |
|
|
733 sr = global_sym_tab->lookup (id, 0, 0); |
|
|
734 |
|
|
735 if (sr && sr->is_defined ()) |
|
|
736 { |
|
|
737 tree_fvc *tmp_fvc = sr->def (); |
|
|
738 |
|
|
739 tree_constant *def = 0; |
|
|
740 if (tmp_fvc->is_constant ()) |
|
|
741 def = (tree_constant *) tmp_fvc; |
|
|
742 |
|
|
743 if (def && def->is_map ()) |
|
|
744 { |
|
|
745 if (elts && *elts) |
|
|
746 { |
|
|
747 tree_constant ult = def->lookup_map_element (elts, 0, 1); |
|
|
748 |
|
|
749 if (ult.is_map ()) |
|
|
750 retval = 1; |
|
|
751 } |
|
|
752 else |
|
|
753 retval = 1; |
|
|
754 } |
|
|
755 } |
|
|
756 |
|
|
757 delete [] id; |
|
|
758 |
|
|
759 return retval; |
|
|
760 } |
|
|
761 |
|
|
762 static char * |
|
|
763 command_generator (const char *text, int state) |
|
|
764 { |
|
|
765 static char *prefix = 0; |
|
|
766 static char *hint = 0; |
|
|
767 |
|
|
768 static int prefix_len = 0; |
|
|
769 static int hint_len = 0; |
|
|
770 |
|
1
|
771 static int list_index = 0; |
|
1280
|
772 static char **name_list = 0; |
|
1
|
773 |
|
1280
|
774 static int matches = 0; |
|
1
|
775 |
|
|
776 if (state == 0) |
|
|
777 { |
|
|
778 list_index = 0; |
|
|
779 |
|
529
|
780 if (name_list) |
|
244
|
781 { |
|
|
782 char **ptr = name_list; |
|
|
783 while (ptr && *ptr) |
|
|
784 delete [] *ptr++; |
|
1280
|
785 |
|
244
|
786 delete [] name_list; |
|
1280
|
787 |
|
|
788 name_list = 0; |
|
244
|
789 } |
|
1
|
790 |
|
1280
|
791 delete [] prefix; |
|
|
792 prefix = 0; |
|
|
793 |
|
|
794 delete [] hint; |
|
1288
|
795 hint = strsave (text); |
|
1280
|
796 |
|
|
797 name_list = generate_possible_completions (text, prefix, hint); |
|
|
798 |
|
|
799 prefix_len = 0; |
|
|
800 if (prefix) |
|
1288
|
801 prefix_len = strlen (prefix); |
|
1280
|
802 |
|
1288
|
803 assert (hint); |
|
|
804 hint_len = strlen (hint); |
|
1280
|
805 |
|
|
806 matches = 0; |
|
|
807 if (name_list) |
|
|
808 { |
|
|
809 int i = 0; |
|
|
810 while (name_list[i]) |
|
|
811 if (strncmp (name_list[i++], hint, hint_len) == 0) |
|
|
812 matches++; |
|
|
813 } |
|
1
|
814 } |
|
|
815 |
|
1280
|
816 if (name_list && matches) |
|
1
|
817 { |
|
1280
|
818 char *name; |
|
|
819 while ((name = name_list[list_index]) != 0) |
|
244
|
820 { |
|
1280
|
821 list_index++; |
|
|
822 if (strncmp (name, hint, hint_len) == 0) |
|
|
823 { |
|
1288
|
824 int len = 2 + prefix_len + strlen (name); |
|
|
825 char *buf = (char *) xmalloc (len); |
|
1280
|
826 |
|
|
827 if (prefix) |
|
|
828 { |
|
|
829 strcpy (buf, prefix); |
|
|
830 strcat (buf, "."); |
|
|
831 strcat (buf, name); |
|
|
832 } |
|
|
833 else |
|
|
834 strcpy (buf, name); |
|
|
835 |
|
|
836 if (matches == 1 && looks_like_struct (buf)) |
|
|
837 rl_completion_append_character = '.'; |
|
|
838 else |
|
|
839 rl_completion_append_character = ' '; |
|
|
840 |
|
|
841 return buf; |
|
|
842 } |
|
244
|
843 } |
|
1
|
844 } |
|
|
845 |
|
529
|
846 return 0; |
|
1
|
847 } |
|
|
848 |
|
269
|
849 static char ** |
|
1
|
850 command_completer (char *text, int start, int end) |
|
|
851 { |
|
529
|
852 char **matches = 0; |
|
1
|
853 matches = completion_matches (text, command_generator); |
|
|
854 return matches; |
|
|
855 } |
|
|
856 |
|
581
|
857 // The next two functions implement the equivalent of the K*rn shell |
|
|
858 // C-o operate-and-get-next-history-line editing command. Stolen from |
|
|
859 // the GNU Bourne Again SHell. |
|
269
|
860 |
|
|
861 // ?? |
|
|
862 static int saved_history_line_to_use = 0; |
|
|
863 |
|
|
864 // ?? |
|
529
|
865 static Function *old_rl_startup_hook = 0; |
|
269
|
866 |
|
|
867 static void |
|
|
868 set_saved_history (void) |
|
|
869 { |
|
|
870 HIST_ENTRY *h; |
|
|
871 |
|
|
872 if (saved_history_line_to_use) |
|
|
873 { |
|
|
874 if (history_set_pos (saved_history_line_to_use)) |
|
|
875 { |
|
|
876 h = current_history (); |
|
|
877 if (h) |
|
|
878 { |
|
|
879 rl_insert_text (h->line); |
|
|
880 |
|
|
881 // Get rid of any undo list created by the previous insert, so the |
|
|
882 // line won't totally be erased when the edits are undone (they will |
|
|
883 // be normally, because this is a history line -- cf. readline.c: |
|
|
884 // line 380 or so). |
|
|
885 if (rl_undo_list) |
|
|
886 { |
|
|
887 free_undo_list (); |
|
529
|
888 rl_undo_list = 0; |
|
269
|
889 } |
|
|
890 } |
|
|
891 } |
|
|
892 } |
|
|
893 saved_history_line_to_use = 0; |
|
|
894 rl_startup_hook = old_rl_startup_hook; |
|
|
895 } |
|
|
896 |
|
|
897 static void |
|
|
898 operate_and_get_next (int count, int c) |
|
|
899 { |
|
|
900 int where; |
|
|
901 extern int history_stifled, history_length, max_input_history; |
|
|
902 |
|
581
|
903 // Accept the current line. |
|
269
|
904 rl_newline (); |
|
|
905 |
|
581
|
906 // Find the current line, and find the next line to use. |
|
269
|
907 where = where_history (); |
|
|
908 |
|
|
909 if (history_stifled && (history_length >= max_input_history)) |
|
|
910 saved_history_line_to_use = where; |
|
|
911 else |
|
|
912 saved_history_line_to_use = where + 1; |
|
|
913 |
|
|
914 old_rl_startup_hook = rl_startup_hook; |
|
|
915 rl_startup_hook = (Function *) set_saved_history; |
|
|
916 } |
|
|
917 |
|
1
|
918 void |
|
|
919 initialize_readline (void) |
|
|
920 { |
|
|
921 // Allow conditional parsing of the ~/.inputrc file |
|
|
922 rl_readline_name = "Octave"; |
|
|
923 |
|
|
924 // Tell the completer that we want to try first. |
|
271
|
925 rl_attempted_completion_function = (CPPFunction *) command_completer; |
|
269
|
926 |
|
|
927 // Bind operate-and-get-next. |
|
|
928 rl_add_defun ("operate-and-get-next", |
|
|
929 (Function *) operate_and_get_next, CTRL ('O')); |
|
1
|
930 } |
|
|
931 |
|
529
|
932 static int |
|
|
933 match_sans_spaces (const char *standard, const char *test) |
|
|
934 { |
|
1034
|
935 char *tmp = strsave (test); |
|
|
936 |
|
|
937 char *tp = tmp; |
|
529
|
938 while (*tp == ' ' || *tp == '\t') |
|
|
939 tp++; |
|
|
940 |
|
1125
|
941 char *ep = tmp + strlen (tmp) - 1; |
|
529
|
942 while (*ep == ' ' || *ep == '\t') |
|
|
943 ep--; |
|
|
944 |
|
1034
|
945 *(ep+1) = '\0'; |
|
|
946 |
|
|
947 int retval = strcmp (standard, tp) == 0; |
|
529
|
948 |
|
1034
|
949 delete [] tmp; |
|
|
950 |
|
|
951 return retval; |
|
|
952 |
|
529
|
953 } |
|
|
954 |
|
581
|
955 // If the user simply hits return, this will produce an empty matrix. |
|
|
956 |
|
529
|
957 static Octave_object |
|
|
958 get_user_input (const Octave_object& args, int nargout, int debug = 0) |
|
|
959 { |
|
|
960 tree_constant retval; |
|
|
961 |
|
|
962 int nargin = args.length (); |
|
|
963 |
|
|
964 int read_as_string = 0; |
|
|
965 |
|
712
|
966 if (nargin == 2) |
|
529
|
967 read_as_string++; |
|
|
968 |
|
|
969 char *prompt = "debug> "; |
|
712
|
970 if (nargin > 0) |
|
529
|
971 { |
|
712
|
972 prompt = args(0).string_value (); |
|
636
|
973 |
|
|
974 if (error_state) |
|
|
975 { |
|
|
976 error ("input: unrecognized argument"); |
|
|
977 return retval; |
|
|
978 } |
|
529
|
979 } |
|
|
980 |
|
|
981 again: |
|
|
982 |
|
|
983 flush_output_to_pager (); |
|
|
984 |
|
|
985 char *input_buf = gnu_readline (prompt); |
|
|
986 |
|
|
987 if (input_buf) |
|
|
988 { |
|
|
989 maybe_save_history (input_buf); |
|
|
990 |
|
|
991 int len = strlen (input_buf); |
|
|
992 |
|
|
993 if (len < 1) |
|
|
994 { |
|
|
995 if (debug) |
|
|
996 goto again; |
|
|
997 else |
|
963
|
998 { |
|
|
999 if (read_as_string) |
|
|
1000 return ""; |
|
|
1001 else |
|
|
1002 return Matrix (); |
|
|
1003 } |
|
529
|
1004 } |
|
|
1005 |
|
|
1006 if (match_sans_spaces ("exit", input_buf) |
|
|
1007 || match_sans_spaces ("quit", input_buf) |
|
|
1008 || match_sans_spaces ("return", input_buf)) |
|
963
|
1009 { |
|
|
1010 return retval; |
|
|
1011 } |
|
529
|
1012 else if (read_as_string) |
|
963
|
1013 { |
|
|
1014 retval = input_buf; |
|
|
1015 } |
|
529
|
1016 else |
|
|
1017 { |
|
|
1018 int parse_status = 0; |
|
|
1019 retval = eval_string (input_buf, 0, 0, parse_status); |
|
581
|
1020 if (retval.is_defined ()) |
|
|
1021 { |
|
|
1022 if (debug) |
|
|
1023 retval.eval (1); |
|
|
1024 } |
|
|
1025 else |
|
963
|
1026 retval = Matrix (); |
|
529
|
1027 } |
|
|
1028 } |
|
|
1029 else |
|
|
1030 error ("input: reading user-input failed!"); |
|
|
1031 |
|
|
1032 if (debug) |
|
|
1033 goto again; |
|
|
1034 |
|
|
1035 return retval; |
|
|
1036 } |
|
|
1037 |
|
712
|
1038 DEFUN ("input", Finput, Sinput, 2, 1, |
|
529
|
1039 "input (PROMPT [, S])\n\ |
|
|
1040 \n\ |
|
|
1041 Prompt user for input. If the second argument is present, return |
|
|
1042 value as a string.") |
|
|
1043 { |
|
|
1044 Octave_object retval; |
|
|
1045 |
|
|
1046 int nargin = args.length (); |
|
|
1047 |
|
712
|
1048 if (nargin == 1 || nargin == 2) |
|
529
|
1049 retval = get_user_input (args, nargout); |
|
|
1050 else |
|
|
1051 print_usage ("input"); |
|
|
1052 |
|
|
1053 return retval; |
|
|
1054 } |
|
|
1055 |
|
712
|
1056 DEFUN ("keyboard", Fkeyboard, Skeyboard, 1, 1, |
|
529
|
1057 "keyboard (PROMPT)\n\ |
|
|
1058 \n\ |
|
|
1059 maybe help in debugging function files") |
|
|
1060 { |
|
|
1061 Octave_object retval; |
|
|
1062 |
|
|
1063 int nargin = args.length (); |
|
|
1064 |
|
712
|
1065 if (nargin == 0 || nargin == 1) |
|
529
|
1066 retval = get_user_input (args, nargout, 1); |
|
|
1067 else |
|
|
1068 print_usage ("keyboard"); |
|
|
1069 |
|
|
1070 return retval; |
|
|
1071 } |
|
|
1072 |
|
1
|
1073 /* |
|
|
1074 ;;; Local Variables: *** |
|
|
1075 ;;; mode: C++ *** |
|
|
1076 ;;; page-delimiter: "^/\\*" *** |
|
|
1077 ;;; End: *** |
|
|
1078 */ |
