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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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1350
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50 #ifdef HAVE_UNISTD_H |
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529
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51 #include <sys/types.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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1350
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56 // (This is apparently no longer true...) |
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1
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57 extern "C" |
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58 { |
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59 #include "readline/readline.h" |
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269
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60 #include "readline/history.h" |
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1
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61 |
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271
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62 extern void free_undo_list (); |
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63 |
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252
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64 extern char *xmalloc (); |
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65 |
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581
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66 // Yes, this sucks, but it avoids a conflict with another readline |
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67 // function declared in iostream.h. |
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1350
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68 // (Apparently, there isn't one there now...) |
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581
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69 |
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1
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70 #if 0 |
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71 #define LINE_SIZE 8192 |
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529
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72 static int no_line_editing = 0; |
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1
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73 #endif |
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74 |
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75 char * |
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1363
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76 gnu_readline (const char *s) |
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1
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77 { |
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78 #if 0 |
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79 static int state = 0; |
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529
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80 static char *line_from_stdin = 0; |
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1
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81 if (no_line_editing) |
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82 { |
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83 if (! state) |
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84 { |
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85 line_from_stdin = (char *) malloc (LINE_SIZE); |
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86 state = 1; |
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87 } |
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88 fputs ("octave> ", stdout); |
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89 fgets (line_from_stdin, LINE_SIZE, stdin); |
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90 return line_from_stdin; |
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91 } |
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92 else |
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93 #endif |
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94 return readline (s); |
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95 } |
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96 } |
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97 |
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1352
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98 #include "defun.h" |
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99 #include "dirfns.h" |
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1
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100 #include "error.h" |
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1352
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101 #include "help.h" |
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1
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102 #include "input.h" |
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1352
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103 #include "oct-map.h" |
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104 #include "oct-obj.h" |
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105 #include "octave-hist.h" |
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106 #include "octave.h" |
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1
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107 #include "pager.h" |
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529
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108 #include "parse.h" |
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1352
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109 #include "pathlen.h" |
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110 #include "sighandlers.h" |
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111 #include "symtab.h" |
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1114
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112 #include "sysdep.h" |
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529
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113 #include "tree-const.h" |
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1
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114 #include "user-prefs.h" |
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1352
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115 #include "utils.h" |
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116 #include "variables.h" |
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529
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117 |
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118 // The size that strings change by. |
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119 #ifndef DEFAULT_ARRAY_SIZE |
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120 #define DEFAULT_ARRAY_SIZE 512 |
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121 #endif |
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122 |
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123 // The growth rate for the prompt string. |
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124 #ifndef PROMPT_GROWTH |
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125 #define PROMPT_GROWTH 50 |
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126 #endif |
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1
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127 |
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128 // Global pointer for eval(). |
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529
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129 const char *current_eval_string = 0; |
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1
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130 |
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131 // Nonzero means get input from current_eval_string. |
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132 int get_input_from_eval_string = 0; |
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133 |
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338
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134 // Nonzero means we're parsing a function file. |
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135 int reading_fcn_file = 0; |
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1
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136 |
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338
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137 // Simple name of function file we are reading. |
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529
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138 char *curr_fcn_file_name = 0; |
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1
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139 |
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140 // Nonzero means we're parsing a script file. |
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141 int reading_script_file = 0; |
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142 |
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143 // If we are reading from an M-file, this is it. |
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529
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144 FILE *ff_instream = 0; |
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1
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145 |
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146 // Nonzero means we are using readline. |
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147 int using_readline = 1; |
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148 |
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616
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149 // Nonzero means commands are echoed as they are executed. |
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150 // (--echo-commands; -x). |
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1
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151 int echo_input = 0; |
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152 |
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153 // Nonzero means this is an interactive shell. |
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154 int interactive = 0; |
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155 |
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156 // Nonzero means the user forced this shell to be interactive (-i). |
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157 int forced_interactive = 0; |
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158 |
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159 // Should we issue a prompt? |
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160 int promptflag = 1; |
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161 |
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162 // The current line of input, from wherever. |
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529
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163 char *current_input_line = 0; |
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1
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164 |
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165 // A line of input from readline. |
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529
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166 static char *octave_gets_line = 0; |
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167 |
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168 extern tree_constant eval_string (const char *string, int print, |
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169 int ans_assign, int& parse_status); |
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170 |
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581
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171 // Append SOURCE to TARGET at INDEX. SIZE is the current amount of |
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172 // space allocated to TARGET. SOURCE can be NULL, in which case |
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173 // nothing happens. Gets rid of SOURCE by free ()ing it. Returns |
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174 // TARGET in case the location has changed. |
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175 |
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529
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176 static char * |
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177 sub_append_string (char *source, char *target, int *index, int *size) |
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178 { |
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179 if (source) |
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180 { |
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181 while ((int)strlen (source) >= (int)(*size - *index)) |
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182 { |
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183 char *tmp = new char [*size += DEFAULT_ARRAY_SIZE]; |
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184 strcpy (tmp, target); |
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185 delete [] target; |
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186 target = tmp; |
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187 } |
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188 |
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189 strcat (target, source); |
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190 *index += strlen (source); |
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191 |
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192 delete [] source; |
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193 } |
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194 return target; |
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195 } |
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196 |
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581
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197 // Return the octal number parsed from STRING, or -1 to indicate that |
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198 // the string contained a bad number. |
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199 |
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529
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200 int |
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201 read_octal (const char *string) |
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202 { |
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203 int result = 0; |
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204 int digits = 0; |
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205 |
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206 while (*string && *string >= '0' && *string < '8') |
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207 { |
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208 digits++; |
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209 result = (result * 8) + *string++ - '0'; |
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210 } |
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211 |
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212 if (! digits || result > 0777 || *string) |
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213 result = -1; |
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214 |
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215 return result; |
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216 } |
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217 |
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581
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218 // Return a string which will be printed as a prompt. The string may |
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219 // contain special characters which are decoded as follows: |
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220 // |
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221 // \t the time |
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222 // \d the date |
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223 // \n CRLF |
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224 // \s the name of the shell (program) |
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225 // \w the current working directory |
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226 // \W the last element of PWD |
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227 // \u your username |
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228 // \h the hostname |
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229 // \# the command number of this command |
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230 // \! the history number of this command |
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231 // \$ a $ or a # if you are root |
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232 // \<octal> character code in octal |
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233 // \\ a backslash |
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234 |
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529
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235 static char * |
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236 decode_prompt_string (const char *string) |
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237 { |
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238 int result_size = PROMPT_GROWTH; |
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239 int result_index = 0; |
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240 char *result = new char [PROMPT_GROWTH]; |
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241 int c; |
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242 char *temp = 0; |
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243 |
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244 result[0] = 0; |
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1215
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245 while ((c = *string++)) |
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529
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246 { |
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247 if (c == '\\') |
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248 { |
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249 c = *string; |
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250 |
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251 switch (c) |
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252 { |
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253 case '0': |
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254 case '1': |
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255 case '2': |
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256 case '3': |
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257 case '4': |
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258 case '5': |
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259 case '6': |
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260 case '7': |
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261 { |
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262 char octal_string[4]; |
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263 int n; |
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264 |
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265 strncpy (octal_string, string, 3); |
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266 octal_string[3] = '\0'; |
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267 |
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268 n = read_octal (octal_string); |
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269 |
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270 temp = strsave ("\\"); |
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271 if (n != -1) |
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272 { |
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273 string += 3; |
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274 temp[0] = n; |
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275 } |
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276 |
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277 c = 0; |
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278 goto add_string; |
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279 } |
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280 |
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281 case 't': |
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282 case 'd': |
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283 /* Make the current time/date into a string. */ |
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284 { |
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285 time_t the_time = time (0); |
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286 char *ttemp = ctime (&the_time); |
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287 temp = strsave (ttemp); |
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288 |
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289 if (c == 't') |
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290 { |
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291 strcpy (temp, temp + 11); |
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292 temp[8] = '\0'; |
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293 } |
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294 else |
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295 temp[10] = '\0'; |
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296 |
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297 goto add_string; |
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298 } |
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1
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299 |
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529
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300 case 'n': |
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301 if (! no_line_editing) |
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302 temp = strsave ("\r\n"); |
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303 else |
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304 temp = strsave ("\n"); |
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305 goto add_string; |
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306 |
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307 case 's': |
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308 { |
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309 temp = base_pathname (prog_name); |
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310 temp = strsave (temp); |
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311 goto add_string; |
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312 } |
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313 |
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314 case 'w': |
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315 case 'W': |
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316 { |
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317 char t_string[MAXPATHLEN]; |
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318 #define EFFICIENT |
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319 #ifdef EFFICIENT |
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320 |
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1358
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321 // Use the value of PWD because it is much more |
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322 // effecient. |
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529
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323 |
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324 temp = user_pref.pwd; |
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325 |
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326 if (! temp) |
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1112
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327 octave_getcwd (t_string, MAXPATHLEN); |
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529
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328 else |
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329 strcpy (t_string, temp); |
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330 #else |
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1112
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331 octave_getcwd (t_string, MAXPATHLEN); |
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529
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332 #endif /* EFFICIENT */ |
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333 |
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334 if (c == 'W') |
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335 { |
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336 char *dir = strrchr (t_string, '/'); |
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337 if (dir && dir != t_string) |
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338 strcpy (t_string, dir + 1); |
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339 temp = strsave (t_string); |
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340 } |
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341 else |
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342 temp = strsave (polite_directory_format (t_string)); |
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343 goto add_string; |
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344 } |
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345 |
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346 case 'u': |
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347 { |
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348 temp = strsave (user_name); |
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349 |
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350 goto add_string; |
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351 } |
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352 |
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353 case 'h': |
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354 { |
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355 char *t_string; |
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356 |
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357 temp = strsave (host_name); |
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1215
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358 t_string = strchr (temp, '.'); |
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359 if (t_string); |
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529
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360 *t_string = '\0'; |
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361 |
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362 goto add_string; |
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363 } |
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364 |
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365 case '#': |
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366 { |
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367 char number_buffer[128]; |
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368 sprintf (number_buffer, "%d", current_command_number); |
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369 temp = strsave (number_buffer); |
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370 goto add_string; |
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371 } |
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372 |
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373 case '!': |
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374 { |
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375 char number_buffer[128]; |
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376 int num = current_history_number (); |
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377 if (num > 0) |
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378 sprintf (number_buffer, "%d", num); |
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379 else |
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380 strcpy (number_buffer, "!"); |
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381 temp = strsave (number_buffer); |
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382 goto add_string; |
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383 } |
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384 |
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385 case '$': |
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386 temp = strsave (geteuid () == 0 ? "#" : "$"); |
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387 goto add_string; |
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388 |
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389 case '\\': |
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390 temp = strsave ("\\"); |
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391 goto add_string; |
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392 |
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393 default: |
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394 temp = strsave ("\\ "); |
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395 temp[1] = c; |
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396 |
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397 add_string: |
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398 if (c) |
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399 string++; |
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400 result = |
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401 (char *)sub_append_string (temp, result, |
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402 &result_index, &result_size); |
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581
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403 temp = 0; // Free ()'ed in sub_append_string (). |
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529
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404 result[result_index] = '\0'; |
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405 break; |
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406 } |
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407 } |
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408 else |
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409 { |
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410 while (3 + result_index > result_size) |
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411 { |
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412 char *tmp = new char [result_size += PROMPT_GROWTH]; |
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413 strcpy (tmp, result); |
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414 delete [] result; |
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415 result = tmp; |
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|
416 } |
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417 result[result_index++] = c; |
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418 result[result_index] = '\0'; |
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419 } |
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420 } |
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421 |
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422 #if 0 |
|
1358
|
423 // I don't really think that this is a good idea. Do you? |
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424 |
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529
|
425 if (! find_variable ("NO_PROMPT_VARS")) |
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426 { |
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427 WORD_LIST *expand_string (), *list; |
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428 char *string_list (); |
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429 |
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430 list = expand_string (result, 1); |
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431 free (result); |
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432 result = string_list (list); |
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433 dispose_words (list); |
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|
434 } |
|
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435 #endif |
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436 |
|
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437 return result; |
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|
438 } |
|
581
|
439 |
|
1044
|
440 static void |
|
|
441 do_input_echo (const char *input_string) |
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|
442 { |
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|
443 if (echo_input) |
|
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444 { |
|
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445 ostrstream buf; |
|
|
446 |
|
|
447 if (! forced_interactive) |
|
|
448 { |
|
|
449 char *prefix = decode_prompt_string (user_pref.ps4); |
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|
450 buf << prefix; |
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|
451 delete [] prefix; |
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452 } |
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453 |
|
|
454 if (input_string) |
|
|
455 { |
|
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456 buf << input_string; |
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457 int len = strlen (input_string); |
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|
458 if (input_string[len-1] != '\n') |
|
|
459 buf << "\n"; |
|
|
460 } |
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|
461 |
|
|
462 maybe_page_output (buf); |
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|
463 } |
|
|
464 } |
|
|
465 |
|
581
|
466 // Use GNU readline to get an input line and store it in the history |
|
|
467 // list. |
|
|
468 |
|
287
|
469 static char * |
|
1
|
470 octave_gets (void) |
|
|
471 { |
|
529
|
472 if (octave_gets_line) |
|
126
|
473 { |
|
|
474 free (octave_gets_line); |
|
529
|
475 octave_gets_line = 0; |
|
126
|
476 } |
|
1
|
477 |
|
|
478 if (interactive || forced_interactive) |
|
|
479 { |
|
|
480 char *ps = (promptflag > 0) ? user_pref.ps1 : user_pref.ps2; |
|
|
481 char *prompt = decode_prompt_string (ps); |
|
|
482 |
|
|
483 if (interactive) |
|
|
484 { |
|
|
485 pipe_handler_error_count = 0; |
|
|
486 flush_output_to_pager (); |
|
|
487 } |
|
|
488 |
|
581
|
489 maybe_write_to_diary_file (prompt); |
|
|
490 |
|
1
|
491 octave_gets_line = gnu_readline (prompt); |
|
581
|
492 |
|
1
|
493 delete [] prompt; |
|
|
494 } |
|
|
495 else |
|
|
496 octave_gets_line = gnu_readline (""); |
|
|
497 |
|
|
498 current_input_line = octave_gets_line; |
|
|
499 |
|
|
500 if (octave_gets_line && *octave_gets_line) |
|
|
501 { |
|
|
502 maybe_save_history (octave_gets_line); |
|
|
503 |
|
581
|
504 maybe_write_to_diary_file (octave_gets_line); |
|
|
505 |
|
1044
|
506 do_input_echo (octave_gets_line); |
|
1
|
507 } |
|
581
|
508 |
|
|
509 maybe_write_to_diary_file ("\n"); |
|
|
510 |
|
1
|
511 return octave_gets_line; |
|
|
512 } |
|
|
513 |
|
581
|
514 // Read a line from the input stream. |
|
|
515 |
|
269
|
516 int |
|
1
|
517 octave_read (char *buf, int max_size) |
|
|
518 { |
|
|
519 int status = 0; |
|
|
520 |
|
529
|
521 static char *stashed_line = 0; |
|
1
|
522 |
|
|
523 if (get_input_from_eval_string) |
|
|
524 { |
|
|
525 int len = strlen (current_eval_string); |
|
|
526 if (len < max_size - 1) |
|
|
527 { |
|
|
528 strcpy (buf, current_eval_string); |
|
|
529 buf[len++] = '\n'; |
|
|
530 buf[len] = '\0'; // Paranoia. |
|
|
531 status = len; |
|
|
532 } |
|
|
533 else |
|
|
534 status = -1; |
|
|
535 |
|
|
536 if (stashed_line) |
|
|
537 delete [] stashed_line; |
|
|
538 |
|
|
539 stashed_line = strsave (buf); |
|
|
540 current_input_line = stashed_line; |
|
|
541 } |
|
|
542 else if (using_readline) |
|
|
543 { |
|
|
544 char *cp = octave_gets (); |
|
529
|
545 if (cp) |
|
1
|
546 { |
|
|
547 int len = strlen (cp); |
|
|
548 if (len >= max_size) |
|
|
549 status = -1; |
|
|
550 else |
|
|
551 { |
|
|
552 strcpy (buf, cp); |
|
|
553 buf[len++] = '\n'; |
|
|
554 buf[len] = '\0'; // Paranoia. |
|
|
555 status = len; |
|
|
556 } |
|
|
557 } |
|
|
558 current_input_line = cp; |
|
|
559 } |
|
|
560 else |
|
|
561 { |
|
|
562 FILE *curr_stream = rl_instream; |
|
338
|
563 if (reading_fcn_file || reading_script_file) |
|
339
|
564 curr_stream = ff_instream; |
|
1
|
565 |
|
529
|
566 assert (curr_stream); |
|
1
|
567 |
|
1358
|
568 // Why is this required? |
|
1
|
569 buf[0] = '\0'; |
|
|
570 |
|
529
|
571 if (fgets (buf, max_size, curr_stream)) |
|
1
|
572 { |
|
|
573 int len = strlen (buf); |
|
|
574 if (len > max_size - 2) |
|
|
575 status = -1; |
|
|
576 else |
|
|
577 { |
|
|
578 if (buf[len-1] != '\n') |
|
|
579 { |
|
|
580 buf[len++] = '\n'; |
|
|
581 buf[len] = '\0'; |
|
|
582 } |
|
|
583 status = len; |
|
|
584 } |
|
|
585 } |
|
|
586 else |
|
|
587 status = 0; // Tell yylex that we found EOF. |
|
|
588 |
|
|
589 if (stashed_line) |
|
|
590 delete [] stashed_line; |
|
|
591 |
|
|
592 stashed_line = strsave (buf); |
|
1044
|
593 |
|
1
|
594 current_input_line = stashed_line; |
|
287
|
595 |
|
1044
|
596 do_input_echo (current_input_line); |
|
|
597 } |
|
287
|
598 |
|
1
|
599 input_line_number++; |
|
1044
|
600 |
|
1
|
601 return status; |
|
|
602 } |
|
|
603 |
|
581
|
604 // Fix things up so that input can come from file `name', printing a |
|
|
605 // warning if the file doesn't exist. |
|
|
606 |
|
1
|
607 FILE * |
|
529
|
608 get_input_from_file (char *name, int warn) |
|
1
|
609 { |
|
529
|
610 FILE *instream = 0; |
|
1
|
611 |
|
|
612 if (name && *name) |
|
|
613 instream = fopen (name, "r"); |
|
|
614 |
|
529
|
615 if (! instream && warn) |
|
217
|
616 warning ("%s: no such file or directory", name); |
|
1
|
617 |
|
338
|
618 if (reading_fcn_file || reading_script_file) |
|
339
|
619 ff_instream = instream; |
|
1
|
620 else |
|
|
621 rl_instream = instream; |
|
|
622 |
|
|
623 return instream; |
|
|
624 } |
|
|
625 |
|
581
|
626 // Fix things up so that input can come from the standard input. This |
|
|
627 // may need to become much more complicated, which is why it's in a |
|
|
628 // separate function. |
|
|
629 |
|
1
|
630 FILE * |
|
|
631 get_input_from_stdin (void) |
|
|
632 { |
|
|
633 rl_instream = stdin; |
|
|
634 return rl_instream; |
|
|
635 } |
|
|
636 |
|
1280
|
637 static char ** |
|
|
638 generate_struct_completions (const char *text, char *& prefix, |
|
|
639 char *& hint) |
|
|
640 { |
|
|
641 char **names = 0; |
|
|
642 |
|
1288
|
643 assert (text); |
|
|
644 |
|
1280
|
645 char *id = strsave (text); |
|
|
646 char *ptr = strchr (id, '.'); |
|
|
647 *ptr = '\0'; |
|
|
648 |
|
|
649 char *elts = ptr + 1; |
|
|
650 ptr = strrchr (elts, '.'); |
|
|
651 if (ptr) |
|
|
652 *ptr = '\0'; |
|
|
653 else |
|
|
654 elts = 0; |
|
|
655 |
|
|
656 prefix = strsave (text); |
|
|
657 ptr = strrchr (prefix, '.'); |
|
|
658 *ptr = '\0'; |
|
|
659 |
|
1288
|
660 delete [] hint; |
|
1280
|
661 hint = strsave (ptr + 1); |
|
|
662 |
|
|
663 symbol_record *sr = curr_sym_tab->lookup (id, 0, 0); |
|
|
664 if (! sr) |
|
|
665 sr = global_sym_tab->lookup (id, 0, 0); |
|
|
666 |
|
|
667 if (sr && sr->is_defined ()) |
|
|
668 { |
|
|
669 tree_fvc *tmp_fvc = sr->def (); |
|
|
670 |
|
|
671 tree_constant *def = 0; |
|
|
672 if (tmp_fvc->is_constant ()) |
|
|
673 def = (tree_constant *) tmp_fvc; |
|
|
674 |
|
|
675 if (def && def->is_map ()) |
|
|
676 { |
|
|
677 if (elts && *elts) |
|
|
678 { |
|
|
679 tree_constant ult = def->lookup_map_element (elts, 0, 1); |
|
|
680 |
|
|
681 if (ult.is_map ()) |
|
|
682 { |
|
|
683 Octave_map m = ult.map_value (); |
|
|
684 names = m.make_name_list (); |
|
|
685 } |
|
|
686 } |
|
|
687 else |
|
|
688 { |
|
|
689 Octave_map m = def->map_value (); |
|
|
690 names = m.make_name_list (); |
|
|
691 } |
|
|
692 } |
|
|
693 } |
|
|
694 |
|
|
695 delete [] id; |
|
|
696 |
|
|
697 return names; |
|
|
698 } |
|
|
699 |
|
|
700 static char ** |
|
|
701 generate_possible_completions (const char *text, char *& prefix, |
|
|
702 char *& hint) |
|
1
|
703 { |
|
1280
|
704 char **names = 0; |
|
|
705 |
|
|
706 prefix = 0; |
|
|
707 |
|
|
708 if (text && *text && *text != '.') |
|
|
709 { |
|
|
710 if (strrchr (text, '.')) |
|
1288
|
711 names = generate_struct_completions (text, prefix, hint); |
|
1280
|
712 else |
|
1288
|
713 names = make_name_list (); |
|
1280
|
714 } |
|
|
715 |
|
|
716 return names; |
|
|
717 } |
|
|
718 |
|
|
719 static int |
|
|
720 looks_like_struct (const char *nm) |
|
|
721 { |
|
|
722 int retval = 0; |
|
|
723 |
|
1288
|
724 assert (nm); |
|
|
725 |
|
1280
|
726 char *id = strsave (nm); |
|
|
727 char *elts = 0; |
|
|
728 char *ptr = strchr (id, '.'); |
|
|
729 if (ptr) |
|
|
730 { |
|
|
731 *ptr = '\0'; |
|
|
732 elts = ptr + 1; |
|
|
733 } |
|
|
734 |
|
|
735 symbol_record *sr = curr_sym_tab->lookup (id, 0, 0); |
|
|
736 if (! sr) |
|
|
737 sr = global_sym_tab->lookup (id, 0, 0); |
|
|
738 |
|
|
739 if (sr && sr->is_defined ()) |
|
|
740 { |
|
|
741 tree_fvc *tmp_fvc = sr->def (); |
|
|
742 |
|
|
743 tree_constant *def = 0; |
|
|
744 if (tmp_fvc->is_constant ()) |
|
|
745 def = (tree_constant *) tmp_fvc; |
|
|
746 |
|
|
747 if (def && def->is_map ()) |
|
|
748 { |
|
|
749 if (elts && *elts) |
|
|
750 { |
|
|
751 tree_constant ult = def->lookup_map_element (elts, 0, 1); |
|
|
752 |
|
|
753 if (ult.is_map ()) |
|
|
754 retval = 1; |
|
|
755 } |
|
|
756 else |
|
|
757 retval = 1; |
|
|
758 } |
|
|
759 } |
|
|
760 |
|
|
761 delete [] id; |
|
|
762 |
|
|
763 return retval; |
|
|
764 } |
|
|
765 |
|
|
766 static char * |
|
|
767 command_generator (const char *text, int state) |
|
|
768 { |
|
|
769 static char *prefix = 0; |
|
|
770 static char *hint = 0; |
|
|
771 |
|
|
772 static int prefix_len = 0; |
|
|
773 static int hint_len = 0; |
|
|
774 |
|
1
|
775 static int list_index = 0; |
|
1280
|
776 static char **name_list = 0; |
|
1
|
777 |
|
1280
|
778 static int matches = 0; |
|
1
|
779 |
|
|
780 if (state == 0) |
|
|
781 { |
|
|
782 list_index = 0; |
|
|
783 |
|
529
|
784 if (name_list) |
|
244
|
785 { |
|
|
786 char **ptr = name_list; |
|
|
787 while (ptr && *ptr) |
|
|
788 delete [] *ptr++; |
|
1280
|
789 |
|
244
|
790 delete [] name_list; |
|
1280
|
791 |
|
|
792 name_list = 0; |
|
244
|
793 } |
|
1
|
794 |
|
1280
|
795 delete [] prefix; |
|
|
796 prefix = 0; |
|
|
797 |
|
|
798 delete [] hint; |
|
1288
|
799 hint = strsave (text); |
|
1280
|
800 |
|
|
801 name_list = generate_possible_completions (text, prefix, hint); |
|
|
802 |
|
|
803 prefix_len = 0; |
|
|
804 if (prefix) |
|
1288
|
805 prefix_len = strlen (prefix); |
|
1280
|
806 |
|
1288
|
807 assert (hint); |
|
|
808 hint_len = strlen (hint); |
|
1280
|
809 |
|
|
810 matches = 0; |
|
|
811 if (name_list) |
|
|
812 { |
|
|
813 int i = 0; |
|
|
814 while (name_list[i]) |
|
|
815 if (strncmp (name_list[i++], hint, hint_len) == 0) |
|
|
816 matches++; |
|
|
817 } |
|
1
|
818 } |
|
|
819 |
|
1280
|
820 if (name_list && matches) |
|
1
|
821 { |
|
1280
|
822 char *name; |
|
|
823 while ((name = name_list[list_index]) != 0) |
|
244
|
824 { |
|
1280
|
825 list_index++; |
|
|
826 if (strncmp (name, hint, hint_len) == 0) |
|
|
827 { |
|
1288
|
828 int len = 2 + prefix_len + strlen (name); |
|
|
829 char *buf = (char *) xmalloc (len); |
|
1280
|
830 |
|
|
831 if (prefix) |
|
|
832 { |
|
|
833 strcpy (buf, prefix); |
|
|
834 strcat (buf, "."); |
|
|
835 strcat (buf, name); |
|
|
836 } |
|
|
837 else |
|
|
838 strcpy (buf, name); |
|
|
839 |
|
|
840 if (matches == 1 && looks_like_struct (buf)) |
|
|
841 rl_completion_append_character = '.'; |
|
|
842 else |
|
|
843 rl_completion_append_character = ' '; |
|
|
844 |
|
|
845 return buf; |
|
|
846 } |
|
244
|
847 } |
|
1
|
848 } |
|
|
849 |
|
529
|
850 return 0; |
|
1
|
851 } |
|
|
852 |
|
269
|
853 static char ** |
|
1
|
854 command_completer (char *text, int start, int end) |
|
|
855 { |
|
529
|
856 char **matches = 0; |
|
1
|
857 matches = completion_matches (text, command_generator); |
|
|
858 return matches; |
|
|
859 } |
|
|
860 |
|
581
|
861 // The next two functions implement the equivalent of the K*rn shell |
|
|
862 // C-o operate-and-get-next-history-line editing command. Stolen from |
|
|
863 // the GNU Bourne Again SHell. |
|
269
|
864 |
|
|
865 // ?? |
|
|
866 static int saved_history_line_to_use = 0; |
|
|
867 |
|
|
868 // ?? |
|
529
|
869 static Function *old_rl_startup_hook = 0; |
|
269
|
870 |
|
|
871 static void |
|
|
872 set_saved_history (void) |
|
|
873 { |
|
|
874 HIST_ENTRY *h; |
|
|
875 |
|
|
876 if (saved_history_line_to_use) |
|
|
877 { |
|
|
878 if (history_set_pos (saved_history_line_to_use)) |
|
|
879 { |
|
|
880 h = current_history (); |
|
|
881 if (h) |
|
|
882 { |
|
|
883 rl_insert_text (h->line); |
|
|
884 |
|
1358
|
885 // Get rid of any undo list created by the previous |
|
|
886 // insert, so the line won't totally be erased when the |
|
|
887 // edits are undone (they will be normally, because this |
|
|
888 // is a history line -- cf. readline.c: line 380 or |
|
|
889 // so). |
|
|
890 |
|
269
|
891 if (rl_undo_list) |
|
|
892 { |
|
|
893 free_undo_list (); |
|
529
|
894 rl_undo_list = 0; |
|
269
|
895 } |
|
|
896 } |
|
|
897 } |
|
|
898 } |
|
|
899 saved_history_line_to_use = 0; |
|
|
900 rl_startup_hook = old_rl_startup_hook; |
|
|
901 } |
|
|
902 |
|
|
903 static void |
|
|
904 operate_and_get_next (int count, int c) |
|
|
905 { |
|
|
906 int where; |
|
|
907 extern int history_stifled, history_length, max_input_history; |
|
|
908 |
|
1358
|
909 // Accept the current line. |
|
|
910 |
|
269
|
911 rl_newline (); |
|
|
912 |
|
1358
|
913 // Find the current line, and find the next line to use. |
|
|
914 |
|
269
|
915 where = where_history (); |
|
|
916 |
|
|
917 if (history_stifled && (history_length >= max_input_history)) |
|
|
918 saved_history_line_to_use = where; |
|
|
919 else |
|
|
920 saved_history_line_to_use = where + 1; |
|
|
921 |
|
|
922 old_rl_startup_hook = rl_startup_hook; |
|
|
923 rl_startup_hook = (Function *) set_saved_history; |
|
|
924 } |
|
|
925 |
|
1
|
926 void |
|
|
927 initialize_readline (void) |
|
|
928 { |
|
1358
|
929 // Allow conditional parsing of the ~/.inputrc file |
|
|
930 |
|
1
|
931 rl_readline_name = "Octave"; |
|
|
932 |
|
1358
|
933 // Tell the completer that we want to try first. |
|
|
934 |
|
271
|
935 rl_attempted_completion_function = (CPPFunction *) command_completer; |
|
269
|
936 |
|
1358
|
937 // Bind operate-and-get-next. |
|
|
938 |
|
269
|
939 rl_add_defun ("operate-and-get-next", |
|
|
940 (Function *) operate_and_get_next, CTRL ('O')); |
|
1
|
941 } |
|
|
942 |
|
529
|
943 static int |
|
|
944 match_sans_spaces (const char *standard, const char *test) |
|
|
945 { |
|
1034
|
946 char *tmp = strsave (test); |
|
|
947 |
|
|
948 char *tp = tmp; |
|
529
|
949 while (*tp == ' ' || *tp == '\t') |
|
|
950 tp++; |
|
|
951 |
|
1125
|
952 char *ep = tmp + strlen (tmp) - 1; |
|
529
|
953 while (*ep == ' ' || *ep == '\t') |
|
|
954 ep--; |
|
|
955 |
|
1034
|
956 *(ep+1) = '\0'; |
|
|
957 |
|
|
958 int retval = strcmp (standard, tp) == 0; |
|
529
|
959 |
|
1034
|
960 delete [] tmp; |
|
|
961 |
|
|
962 return retval; |
|
|
963 |
|
529
|
964 } |
|
|
965 |
|
581
|
966 // If the user simply hits return, this will produce an empty matrix. |
|
|
967 |
|
529
|
968 static Octave_object |
|
|
969 get_user_input (const Octave_object& args, int nargout, int debug = 0) |
|
|
970 { |
|
|
971 tree_constant retval; |
|
|
972 |
|
|
973 int nargin = args.length (); |
|
|
974 |
|
|
975 int read_as_string = 0; |
|
|
976 |
|
712
|
977 if (nargin == 2) |
|
529
|
978 read_as_string++; |
|
|
979 |
|
1363
|
980 const char *prompt = "debug> "; |
|
712
|
981 if (nargin > 0) |
|
529
|
982 { |
|
712
|
983 prompt = args(0).string_value (); |
|
636
|
984 |
|
|
985 if (error_state) |
|
|
986 { |
|
|
987 error ("input: unrecognized argument"); |
|
|
988 return retval; |
|
|
989 } |
|
529
|
990 } |
|
|
991 |
|
|
992 again: |
|
|
993 |
|
|
994 flush_output_to_pager (); |
|
|
995 |
|
|
996 char *input_buf = gnu_readline (prompt); |
|
|
997 |
|
|
998 if (input_buf) |
|
|
999 { |
|
|
1000 maybe_save_history (input_buf); |
|
|
1001 |
|
|
1002 int len = strlen (input_buf); |
|
|
1003 |
|
|
1004 if (len < 1) |
|
|
1005 { |
|
|
1006 if (debug) |
|
|
1007 goto again; |
|
|
1008 else |
|
963
|
1009 { |
|
|
1010 if (read_as_string) |
|
|
1011 return ""; |
|
|
1012 else |
|
|
1013 return Matrix (); |
|
|
1014 } |
|
529
|
1015 } |
|
|
1016 |
|
|
1017 if (match_sans_spaces ("exit", input_buf) |
|
|
1018 || match_sans_spaces ("quit", input_buf) |
|
|
1019 || match_sans_spaces ("return", input_buf)) |
|
963
|
1020 { |
|
|
1021 return retval; |
|
|
1022 } |
|
529
|
1023 else if (read_as_string) |
|
963
|
1024 { |
|
|
1025 retval = input_buf; |
|
|
1026 } |
|
529
|
1027 else |
|
|
1028 { |
|
|
1029 int parse_status = 0; |
|
|
1030 retval = eval_string (input_buf, 0, 0, parse_status); |
|
581
|
1031 if (retval.is_defined ()) |
|
|
1032 { |
|
|
1033 if (debug) |
|
|
1034 retval.eval (1); |
|
|
1035 } |
|
|
1036 else |
|
963
|
1037 retval = Matrix (); |
|
529
|
1038 } |
|
|
1039 } |
|
|
1040 else |
|
|
1041 error ("input: reading user-input failed!"); |
|
|
1042 |
|
|
1043 if (debug) |
|
|
1044 goto again; |
|
|
1045 |
|
|
1046 return retval; |
|
|
1047 } |
|
|
1048 |
|
712
|
1049 DEFUN ("input", Finput, Sinput, 2, 1, |
|
529
|
1050 "input (PROMPT [, S])\n\ |
|
|
1051 \n\ |
|
|
1052 Prompt user for input. If the second argument is present, return |
|
|
1053 value as a string.") |
|
|
1054 { |
|
|
1055 Octave_object retval; |
|
|
1056 |
|
|
1057 int nargin = args.length (); |
|
|
1058 |
|
712
|
1059 if (nargin == 1 || nargin == 2) |
|
529
|
1060 retval = get_user_input (args, nargout); |
|
|
1061 else |
|
|
1062 print_usage ("input"); |
|
|
1063 |
|
|
1064 return retval; |
|
|
1065 } |
|
|
1066 |
|
712
|
1067 DEFUN ("keyboard", Fkeyboard, Skeyboard, 1, 1, |
|
529
|
1068 "keyboard (PROMPT)\n\ |
|
|
1069 \n\ |
|
|
1070 maybe help in debugging function files") |
|
|
1071 { |
|
|
1072 Octave_object retval; |
|
|
1073 |
|
|
1074 int nargin = args.length (); |
|
|
1075 |
|
712
|
1076 if (nargin == 0 || nargin == 1) |
|
529
|
1077 retval = get_user_input (args, nargout, 1); |
|
|
1078 else |
|
|
1079 print_usage ("keyboard"); |
|
|
1080 |
|
|
1081 return retval; |
|
|
1082 } |
|
|
1083 |
|
1
|
1084 /* |
|
|
1085 ;;; Local Variables: *** |
|
|
1086 ;;; mode: C++ *** |
|
|
1087 ;;; page-delimiter: "^/\\*" *** |
|
|
1088 ;;; End: *** |
|
|
1089 */ |
