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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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529
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47 #include <sys/types.h> |
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48 #ifdef HAVE_UNISTD_H |
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49 #include <unistd.h> |
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50 #endif |
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1343
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51 |
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195
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52 #include <iostream.h> |
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1044
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53 #include <strstream.h> |
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1
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54 |
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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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529
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96 #include "help.h" |
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1
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97 #include "error.h" |
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98 #include "utils.h" |
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99 #include "input.h" |
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100 #include "pager.h" |
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529
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101 #include "parse.h" |
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102 #include "dirfns.h" |
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103 #include "octave.h" |
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1114
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104 #include "sysdep.h" |
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529
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105 #include "variables.h" |
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106 #include "tree-const.h" |
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1
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107 #include "octave-hist.h" |
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108 #include "sighandlers.h" |
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109 #include "user-prefs.h" |
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529
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110 #include "oct-obj.h" |
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1280
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111 #include "oct-map.h" |
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112 #include "symtab.h" |
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529
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113 #include "defun.h" |
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114 |
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115 #ifndef MAXPATHLEN |
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116 #define MAXPATHLEN 1024 |
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117 #endif |
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118 |
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119 // The size that strings change by. |
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120 #ifndef DEFAULT_ARRAY_SIZE |
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121 #define DEFAULT_ARRAY_SIZE 512 |
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122 #endif |
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123 |
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124 // The growth rate for the prompt string. |
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125 #ifndef PROMPT_GROWTH |
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126 #define PROMPT_GROWTH 50 |
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127 #endif |
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1
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128 |
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129 // Global pointer for eval(). |
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529
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130 const char *current_eval_string = 0; |
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1
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131 |
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132 // Nonzero means get input from current_eval_string. |
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133 int get_input_from_eval_string = 0; |
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134 |
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338
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135 // Nonzero means we're parsing a function file. |
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136 int reading_fcn_file = 0; |
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1
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137 |
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338
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138 // Simple name of function file we are reading. |
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529
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139 char *curr_fcn_file_name = 0; |
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1
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140 |
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141 // Nonzero means we're parsing a script file. |
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142 int reading_script_file = 0; |
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143 |
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144 // If we are reading from an M-file, this is it. |
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529
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145 FILE *ff_instream = 0; |
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1
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146 |
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147 // Nonzero means we are using readline. |
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148 int using_readline = 1; |
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149 |
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616
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150 // Nonzero means commands are echoed as they are executed. |
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151 // (--echo-commands; -x). |
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1
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152 int echo_input = 0; |
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153 |
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154 // Nonzero means this is an interactive shell. |
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155 int interactive = 0; |
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156 |
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157 // Nonzero means the user forced this shell to be interactive (-i). |
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158 int forced_interactive = 0; |
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159 |
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160 // Should we issue a prompt? |
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161 int promptflag = 1; |
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162 |
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163 // The current line of input, from wherever. |
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529
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164 char *current_input_line = 0; |
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1
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165 |
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166 // A line of input from readline. |
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529
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167 static char *octave_gets_line = 0; |
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168 |
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169 extern tree_constant eval_string (const char *string, int print, |
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170 int ans_assign, int& parse_status); |
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171 |
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581
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172 // Append SOURCE to TARGET at INDEX. SIZE is the current amount of |
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173 // space allocated to TARGET. SOURCE can be NULL, in which case |
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174 // nothing happens. Gets rid of SOURCE by free ()ing it. Returns |
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175 // TARGET in case the location has changed. |
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176 |
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529
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177 static char * |
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178 sub_append_string (char *source, char *target, int *index, int *size) |
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179 { |
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180 if (source) |
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181 { |
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182 while ((int)strlen (source) >= (int)(*size - *index)) |
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183 { |
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184 char *tmp = new char [*size += DEFAULT_ARRAY_SIZE]; |
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185 strcpy (tmp, target); |
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186 delete [] target; |
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187 target = tmp; |
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188 } |
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189 |
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190 strcat (target, source); |
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191 *index += strlen (source); |
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192 |
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193 delete [] source; |
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194 } |
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195 return target; |
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196 } |
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197 |
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581
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198 // Return the octal number parsed from STRING, or -1 to indicate that |
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199 // the string contained a bad number. |
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200 |
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529
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201 int |
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202 read_octal (const char *string) |
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203 { |
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204 int result = 0; |
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205 int digits = 0; |
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206 |
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207 while (*string && *string >= '0' && *string < '8') |
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208 { |
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209 digits++; |
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210 result = (result * 8) + *string++ - '0'; |
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211 } |
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212 |
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213 if (! digits || result > 0777 || *string) |
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214 result = -1; |
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215 |
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216 return result; |
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217 } |
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218 |
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581
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219 // Return a string which will be printed as a prompt. The string may |
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220 // contain special characters which are decoded as follows: |
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221 // |
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222 // \t the time |
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223 // \d the date |
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224 // \n CRLF |
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225 // \s the name of the shell (program) |
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226 // \w the current working directory |
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227 // \W the last element of PWD |
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228 // \u your username |
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229 // \h the hostname |
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230 // \# the command number of this command |
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231 // \! the history number of this command |
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232 // \$ a $ or a # if you are root |
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233 // \<octal> character code in octal |
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234 // \\ a backslash |
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235 |
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529
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236 static char * |
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237 decode_prompt_string (const char *string) |
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238 { |
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239 int result_size = PROMPT_GROWTH; |
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240 int result_index = 0; |
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241 char *result = new char [PROMPT_GROWTH]; |
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242 int c; |
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243 char *temp = 0; |
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244 |
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245 result[0] = 0; |
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1215
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246 while ((c = *string++)) |
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529
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247 { |
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248 if (c == '\\') |
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249 { |
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250 c = *string; |
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251 |
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252 switch (c) |
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253 { |
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254 case '0': |
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255 case '1': |
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256 case '2': |
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257 case '3': |
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258 case '4': |
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259 case '5': |
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260 case '6': |
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261 case '7': |
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262 { |
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263 char octal_string[4]; |
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264 int n; |
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265 |
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266 strncpy (octal_string, string, 3); |
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267 octal_string[3] = '\0'; |
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268 |
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269 n = read_octal (octal_string); |
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270 |
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271 temp = strsave ("\\"); |
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272 if (n != -1) |
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273 { |
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274 string += 3; |
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275 temp[0] = n; |
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276 } |
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277 |
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278 c = 0; |
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279 goto add_string; |
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280 } |
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281 |
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282 case 't': |
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283 case 'd': |
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284 /* Make the current time/date into a string. */ |
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285 { |
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286 time_t the_time = time (0); |
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287 char *ttemp = ctime (&the_time); |
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288 temp = strsave (ttemp); |
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289 |
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290 if (c == 't') |
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291 { |
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292 strcpy (temp, temp + 11); |
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293 temp[8] = '\0'; |
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294 } |
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295 else |
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296 temp[10] = '\0'; |
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297 |
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298 goto add_string; |
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299 } |
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1
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300 |
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529
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301 case 'n': |
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302 if (! no_line_editing) |
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303 temp = strsave ("\r\n"); |
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304 else |
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305 temp = strsave ("\n"); |
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306 goto add_string; |
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307 |
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308 case 's': |
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309 { |
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310 temp = base_pathname (prog_name); |
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311 temp = strsave (temp); |
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312 goto add_string; |
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313 } |
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314 |
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315 case 'w': |
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316 case 'W': |
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317 { |
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318 char t_string[MAXPATHLEN]; |
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319 #define EFFICIENT |
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320 #ifdef EFFICIENT |
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321 |
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322 // Use the value of PWD because it is much more effecient. |
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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 |
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581
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423 // I don't really think that this is a good idea. Do you? |
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529
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424 if (! find_variable ("NO_PROMPT_VARS")) |
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425 { |
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426 WORD_LIST *expand_string (), *list; |
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427 char *string_list (); |
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428 |
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429 list = expand_string (result, 1); |
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430 free (result); |
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431 result = string_list (list); |
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432 dispose_words (list); |
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433 } |
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434 #endif |
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435 |
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436 return result; |
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437 } |
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581
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438 |
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1044
|
439 static void |
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440 do_input_echo (const char *input_string) |
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441 { |
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442 if (echo_input) |
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443 { |
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444 ostrstream buf; |
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445 |
|
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446 if (! forced_interactive) |
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447 { |
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448 char *prefix = decode_prompt_string (user_pref.ps4); |
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449 buf << prefix; |
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450 delete [] prefix; |
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451 } |
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452 |
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453 if (input_string) |
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454 { |
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455 buf << input_string; |
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456 int len = strlen (input_string); |
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457 if (input_string[len-1] != '\n') |
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458 buf << "\n"; |
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|
459 } |
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460 |
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461 maybe_page_output (buf); |
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|
462 } |
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463 } |
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464 |
|
581
|
465 // Use GNU readline to get an input line and store it in the history |
|
|
466 // list. |
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|
467 |
|
287
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468 static char * |
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1
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469 octave_gets (void) |
|
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470 { |
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529
|
471 if (octave_gets_line) |
|
126
|
472 { |
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473 free (octave_gets_line); |
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529
|
474 octave_gets_line = 0; |
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126
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475 } |
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1
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476 |
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477 if (interactive || forced_interactive) |
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478 { |
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479 char *ps = (promptflag > 0) ? user_pref.ps1 : user_pref.ps2; |
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480 char *prompt = decode_prompt_string (ps); |
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481 |
|
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482 if (interactive) |
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|
483 { |
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484 pipe_handler_error_count = 0; |
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|
485 flush_output_to_pager (); |
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|
486 } |
|
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487 |
|
581
|
488 maybe_write_to_diary_file (prompt); |
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|
489 |
|
1
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490 octave_gets_line = gnu_readline (prompt); |
|
581
|
491 |
|
1
|
492 delete [] prompt; |
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|
493 } |
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494 else |
|
|
495 octave_gets_line = gnu_readline (""); |
|
|
496 |
|
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497 current_input_line = octave_gets_line; |
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|
498 |
|
|
499 if (octave_gets_line && *octave_gets_line) |
|
|
500 { |
|
|
501 maybe_save_history (octave_gets_line); |
|
|
502 |
|
581
|
503 maybe_write_to_diary_file (octave_gets_line); |
|
|
504 |
|
1044
|
505 do_input_echo (octave_gets_line); |
|
1
|
506 } |
|
581
|
507 |
|
|
508 maybe_write_to_diary_file ("\n"); |
|
|
509 |
|
1
|
510 return octave_gets_line; |
|
|
511 } |
|
|
512 |
|
581
|
513 // Read a line from the input stream. |
|
|
514 |
|
269
|
515 int |
|
1
|
516 octave_read (char *buf, int max_size) |
|
|
517 { |
|
|
518 int status = 0; |
|
|
519 |
|
529
|
520 static char *stashed_line = 0; |
|
1
|
521 |
|
|
522 if (get_input_from_eval_string) |
|
|
523 { |
|
|
524 int len = strlen (current_eval_string); |
|
|
525 if (len < max_size - 1) |
|
|
526 { |
|
|
527 strcpy (buf, current_eval_string); |
|
|
528 buf[len++] = '\n'; |
|
|
529 buf[len] = '\0'; // Paranoia. |
|
|
530 status = len; |
|
|
531 } |
|
|
532 else |
|
|
533 status = -1; |
|
|
534 |
|
|
535 if (stashed_line) |
|
|
536 delete [] stashed_line; |
|
|
537 |
|
|
538 stashed_line = strsave (buf); |
|
|
539 current_input_line = stashed_line; |
|
|
540 } |
|
|
541 else if (using_readline) |
|
|
542 { |
|
|
543 char *cp = octave_gets (); |
|
529
|
544 if (cp) |
|
1
|
545 { |
|
|
546 int len = strlen (cp); |
|
|
547 if (len >= max_size) |
|
|
548 status = -1; |
|
|
549 else |
|
|
550 { |
|
|
551 strcpy (buf, cp); |
|
|
552 buf[len++] = '\n'; |
|
|
553 buf[len] = '\0'; // Paranoia. |
|
|
554 status = len; |
|
|
555 } |
|
|
556 } |
|
|
557 current_input_line = cp; |
|
|
558 } |
|
|
559 else |
|
|
560 { |
|
|
561 FILE *curr_stream = rl_instream; |
|
338
|
562 if (reading_fcn_file || reading_script_file) |
|
339
|
563 curr_stream = ff_instream; |
|
1
|
564 |
|
529
|
565 assert (curr_stream); |
|
1
|
566 |
|
|
567 // Why is this required? |
|
|
568 buf[0] = '\0'; |
|
|
569 |
|
529
|
570 if (fgets (buf, max_size, curr_stream)) |
|
1
|
571 { |
|
|
572 int len = strlen (buf); |
|
|
573 if (len > max_size - 2) |
|
|
574 status = -1; |
|
|
575 else |
|
|
576 { |
|
|
577 if (buf[len-1] != '\n') |
|
|
578 { |
|
|
579 buf[len++] = '\n'; |
|
|
580 buf[len] = '\0'; |
|
|
581 } |
|
|
582 status = len; |
|
|
583 } |
|
|
584 } |
|
|
585 else |
|
|
586 status = 0; // Tell yylex that we found EOF. |
|
|
587 |
|
|
588 if (stashed_line) |
|
|
589 delete [] stashed_line; |
|
|
590 |
|
|
591 stashed_line = strsave (buf); |
|
1044
|
592 |
|
1
|
593 current_input_line = stashed_line; |
|
287
|
594 |
|
1044
|
595 do_input_echo (current_input_line); |
|
|
596 } |
|
287
|
597 |
|
1
|
598 input_line_number++; |
|
1044
|
599 |
|
1
|
600 return status; |
|
|
601 } |
|
|
602 |
|
581
|
603 // Fix things up so that input can come from file `name', printing a |
|
|
604 // warning if the file doesn't exist. |
|
|
605 |
|
1
|
606 FILE * |
|
529
|
607 get_input_from_file (char *name, int warn) |
|
1
|
608 { |
|
529
|
609 FILE *instream = 0; |
|
1
|
610 |
|
|
611 if (name && *name) |
|
|
612 instream = fopen (name, "r"); |
|
|
613 |
|
529
|
614 if (! instream && warn) |
|
217
|
615 warning ("%s: no such file or directory", name); |
|
1
|
616 |
|
338
|
617 if (reading_fcn_file || reading_script_file) |
|
339
|
618 ff_instream = instream; |
|
1
|
619 else |
|
|
620 rl_instream = instream; |
|
|
621 |
|
|
622 return instream; |
|
|
623 } |
|
|
624 |
|
581
|
625 // Fix things up so that input can come from the standard input. This |
|
|
626 // may need to become much more complicated, which is why it's in a |
|
|
627 // separate function. |
|
|
628 |
|
1
|
629 FILE * |
|
|
630 get_input_from_stdin (void) |
|
|
631 { |
|
|
632 rl_instream = stdin; |
|
|
633 return rl_instream; |
|
|
634 } |
|
|
635 |
|
1280
|
636 static char ** |
|
|
637 generate_struct_completions (const char *text, char *& prefix, |
|
|
638 char *& hint) |
|
|
639 { |
|
|
640 char **names = 0; |
|
|
641 |
|
1288
|
642 assert (text); |
|
|
643 |
|
1280
|
644 char *id = strsave (text); |
|
|
645 char *ptr = strchr (id, '.'); |
|
|
646 *ptr = '\0'; |
|
|
647 |
|
|
648 char *elts = ptr + 1; |
|
|
649 ptr = strrchr (elts, '.'); |
|
|
650 if (ptr) |
|
|
651 *ptr = '\0'; |
|
|
652 else |
|
|
653 elts = 0; |
|
|
654 |
|
|
655 prefix = strsave (text); |
|
|
656 ptr = strrchr (prefix, '.'); |
|
|
657 *ptr = '\0'; |
|
|
658 |
|
1288
|
659 delete [] hint; |
|
1280
|
660 hint = strsave (ptr + 1); |
|
|
661 |
|
|
662 symbol_record *sr = curr_sym_tab->lookup (id, 0, 0); |
|
|
663 if (! sr) |
|
|
664 sr = global_sym_tab->lookup (id, 0, 0); |
|
|
665 |
|
|
666 if (sr && sr->is_defined ()) |
|
|
667 { |
|
|
668 tree_fvc *tmp_fvc = sr->def (); |
|
|
669 |
|
|
670 tree_constant *def = 0; |
|
|
671 if (tmp_fvc->is_constant ()) |
|
|
672 def = (tree_constant *) tmp_fvc; |
|
|
673 |
|
|
674 if (def && def->is_map ()) |
|
|
675 { |
|
|
676 if (elts && *elts) |
|
|
677 { |
|
|
678 tree_constant ult = def->lookup_map_element (elts, 0, 1); |
|
|
679 |
|
|
680 if (ult.is_map ()) |
|
|
681 { |
|
|
682 Octave_map m = ult.map_value (); |
|
|
683 names = m.make_name_list (); |
|
|
684 } |
|
|
685 } |
|
|
686 else |
|
|
687 { |
|
|
688 Octave_map m = def->map_value (); |
|
|
689 names = m.make_name_list (); |
|
|
690 } |
|
|
691 } |
|
|
692 } |
|
|
693 |
|
|
694 delete [] id; |
|
|
695 |
|
|
696 return names; |
|
|
697 } |
|
|
698 |
|
|
699 static char ** |
|
|
700 generate_possible_completions (const char *text, char *& prefix, |
|
|
701 char *& hint) |
|
1
|
702 { |
|
1280
|
703 char **names = 0; |
|
|
704 |
|
|
705 prefix = 0; |
|
|
706 |
|
|
707 if (text && *text && *text != '.') |
|
|
708 { |
|
|
709 if (strrchr (text, '.')) |
|
1288
|
710 names = generate_struct_completions (text, prefix, hint); |
|
1280
|
711 else |
|
1288
|
712 names = make_name_list (); |
|
1280
|
713 } |
|
|
714 |
|
|
715 return names; |
|
|
716 } |
|
|
717 |
|
|
718 static int |
|
|
719 looks_like_struct (const char *nm) |
|
|
720 { |
|
|
721 int retval = 0; |
|
|
722 |
|
1288
|
723 assert (nm); |
|
|
724 |
|
1280
|
725 char *id = strsave (nm); |
|
|
726 char *elts = 0; |
|
|
727 char *ptr = strchr (id, '.'); |
|
|
728 if (ptr) |
|
|
729 { |
|
|
730 *ptr = '\0'; |
|
|
731 elts = ptr + 1; |
|
|
732 } |
|
|
733 |
|
|
734 symbol_record *sr = curr_sym_tab->lookup (id, 0, 0); |
|
|
735 if (! sr) |
|
|
736 sr = global_sym_tab->lookup (id, 0, 0); |
|
|
737 |
|
|
738 if (sr && sr->is_defined ()) |
|
|
739 { |
|
|
740 tree_fvc *tmp_fvc = sr->def (); |
|
|
741 |
|
|
742 tree_constant *def = 0; |
|
|
743 if (tmp_fvc->is_constant ()) |
|
|
744 def = (tree_constant *) tmp_fvc; |
|
|
745 |
|
|
746 if (def && def->is_map ()) |
|
|
747 { |
|
|
748 if (elts && *elts) |
|
|
749 { |
|
|
750 tree_constant ult = def->lookup_map_element (elts, 0, 1); |
|
|
751 |
|
|
752 if (ult.is_map ()) |
|
|
753 retval = 1; |
|
|
754 } |
|
|
755 else |
|
|
756 retval = 1; |
|
|
757 } |
|
|
758 } |
|
|
759 |
|
|
760 delete [] id; |
|
|
761 |
|
|
762 return retval; |
|
|
763 } |
|
|
764 |
|
|
765 static char * |
|
|
766 command_generator (const char *text, int state) |
|
|
767 { |
|
|
768 static char *prefix = 0; |
|
|
769 static char *hint = 0; |
|
|
770 |
|
|
771 static int prefix_len = 0; |
|
|
772 static int hint_len = 0; |
|
|
773 |
|
1
|
774 static int list_index = 0; |
|
1280
|
775 static char **name_list = 0; |
|
1
|
776 |
|
1280
|
777 static int matches = 0; |
|
1
|
778 |
|
|
779 if (state == 0) |
|
|
780 { |
|
|
781 list_index = 0; |
|
|
782 |
|
529
|
783 if (name_list) |
|
244
|
784 { |
|
|
785 char **ptr = name_list; |
|
|
786 while (ptr && *ptr) |
|
|
787 delete [] *ptr++; |
|
1280
|
788 |
|
244
|
789 delete [] name_list; |
|
1280
|
790 |
|
|
791 name_list = 0; |
|
244
|
792 } |
|
1
|
793 |
|
1280
|
794 delete [] prefix; |
|
|
795 prefix = 0; |
|
|
796 |
|
|
797 delete [] hint; |
|
1288
|
798 hint = strsave (text); |
|
1280
|
799 |
|
|
800 name_list = generate_possible_completions (text, prefix, hint); |
|
|
801 |
|
|
802 prefix_len = 0; |
|
|
803 if (prefix) |
|
1288
|
804 prefix_len = strlen (prefix); |
|
1280
|
805 |
|
1288
|
806 assert (hint); |
|
|
807 hint_len = strlen (hint); |
|
1280
|
808 |
|
|
809 matches = 0; |
|
|
810 if (name_list) |
|
|
811 { |
|
|
812 int i = 0; |
|
|
813 while (name_list[i]) |
|
|
814 if (strncmp (name_list[i++], hint, hint_len) == 0) |
|
|
815 matches++; |
|
|
816 } |
|
1
|
817 } |
|
|
818 |
|
1280
|
819 if (name_list && matches) |
|
1
|
820 { |
|
1280
|
821 char *name; |
|
|
822 while ((name = name_list[list_index]) != 0) |
|
244
|
823 { |
|
1280
|
824 list_index++; |
|
|
825 if (strncmp (name, hint, hint_len) == 0) |
|
|
826 { |
|
1288
|
827 int len = 2 + prefix_len + strlen (name); |
|
|
828 char *buf = (char *) xmalloc (len); |
|
1280
|
829 |
|
|
830 if (prefix) |
|
|
831 { |
|
|
832 strcpy (buf, prefix); |
|
|
833 strcat (buf, "."); |
|
|
834 strcat (buf, name); |
|
|
835 } |
|
|
836 else |
|
|
837 strcpy (buf, name); |
|
|
838 |
|
|
839 if (matches == 1 && looks_like_struct (buf)) |
|
|
840 rl_completion_append_character = '.'; |
|
|
841 else |
|
|
842 rl_completion_append_character = ' '; |
|
|
843 |
|
|
844 return buf; |
|
|
845 } |
|
244
|
846 } |
|
1
|
847 } |
|
|
848 |
|
529
|
849 return 0; |
|
1
|
850 } |
|
|
851 |
|
269
|
852 static char ** |
|
1
|
853 command_completer (char *text, int start, int end) |
|
|
854 { |
|
529
|
855 char **matches = 0; |
|
1
|
856 matches = completion_matches (text, command_generator); |
|
|
857 return matches; |
|
|
858 } |
|
|
859 |
|
581
|
860 // The next two functions implement the equivalent of the K*rn shell |
|
|
861 // C-o operate-and-get-next-history-line editing command. Stolen from |
|
|
862 // the GNU Bourne Again SHell. |
|
269
|
863 |
|
|
864 // ?? |
|
|
865 static int saved_history_line_to_use = 0; |
|
|
866 |
|
|
867 // ?? |
|
529
|
868 static Function *old_rl_startup_hook = 0; |
|
269
|
869 |
|
|
870 static void |
|
|
871 set_saved_history (void) |
|
|
872 { |
|
|
873 HIST_ENTRY *h; |
|
|
874 |
|
|
875 if (saved_history_line_to_use) |
|
|
876 { |
|
|
877 if (history_set_pos (saved_history_line_to_use)) |
|
|
878 { |
|
|
879 h = current_history (); |
|
|
880 if (h) |
|
|
881 { |
|
|
882 rl_insert_text (h->line); |
|
|
883 |
|
|
884 // Get rid of any undo list created by the previous insert, so the |
|
|
885 // line won't totally be erased when the edits are undone (they will |
|
|
886 // be normally, because this is a history line -- cf. readline.c: |
|
|
887 // line 380 or so). |
|
|
888 if (rl_undo_list) |
|
|
889 { |
|
|
890 free_undo_list (); |
|
529
|
891 rl_undo_list = 0; |
|
269
|
892 } |
|
|
893 } |
|
|
894 } |
|
|
895 } |
|
|
896 saved_history_line_to_use = 0; |
|
|
897 rl_startup_hook = old_rl_startup_hook; |
|
|
898 } |
|
|
899 |
|
|
900 static void |
|
|
901 operate_and_get_next (int count, int c) |
|
|
902 { |
|
|
903 int where; |
|
|
904 extern int history_stifled, history_length, max_input_history; |
|
|
905 |
|
581
|
906 // Accept the current line. |
|
269
|
907 rl_newline (); |
|
|
908 |
|
581
|
909 // Find the current line, and find the next line to use. |
|
269
|
910 where = where_history (); |
|
|
911 |
|
|
912 if (history_stifled && (history_length >= max_input_history)) |
|
|
913 saved_history_line_to_use = where; |
|
|
914 else |
|
|
915 saved_history_line_to_use = where + 1; |
|
|
916 |
|
|
917 old_rl_startup_hook = rl_startup_hook; |
|
|
918 rl_startup_hook = (Function *) set_saved_history; |
|
|
919 } |
|
|
920 |
|
1
|
921 void |
|
|
922 initialize_readline (void) |
|
|
923 { |
|
|
924 // Allow conditional parsing of the ~/.inputrc file |
|
|
925 rl_readline_name = "Octave"; |
|
|
926 |
|
|
927 // Tell the completer that we want to try first. |
|
271
|
928 rl_attempted_completion_function = (CPPFunction *) command_completer; |
|
269
|
929 |
|
|
930 // Bind operate-and-get-next. |
|
|
931 rl_add_defun ("operate-and-get-next", |
|
|
932 (Function *) operate_and_get_next, CTRL ('O')); |
|
1
|
933 } |
|
|
934 |
|
529
|
935 static int |
|
|
936 match_sans_spaces (const char *standard, const char *test) |
|
|
937 { |
|
1034
|
938 char *tmp = strsave (test); |
|
|
939 |
|
|
940 char *tp = tmp; |
|
529
|
941 while (*tp == ' ' || *tp == '\t') |
|
|
942 tp++; |
|
|
943 |
|
1125
|
944 char *ep = tmp + strlen (tmp) - 1; |
|
529
|
945 while (*ep == ' ' || *ep == '\t') |
|
|
946 ep--; |
|
|
947 |
|
1034
|
948 *(ep+1) = '\0'; |
|
|
949 |
|
|
950 int retval = strcmp (standard, tp) == 0; |
|
529
|
951 |
|
1034
|
952 delete [] tmp; |
|
|
953 |
|
|
954 return retval; |
|
|
955 |
|
529
|
956 } |
|
|
957 |
|
581
|
958 // If the user simply hits return, this will produce an empty matrix. |
|
|
959 |
|
529
|
960 static Octave_object |
|
|
961 get_user_input (const Octave_object& args, int nargout, int debug = 0) |
|
|
962 { |
|
|
963 tree_constant retval; |
|
|
964 |
|
|
965 int nargin = args.length (); |
|
|
966 |
|
|
967 int read_as_string = 0; |
|
|
968 |
|
712
|
969 if (nargin == 2) |
|
529
|
970 read_as_string++; |
|
|
971 |
|
|
972 char *prompt = "debug> "; |
|
712
|
973 if (nargin > 0) |
|
529
|
974 { |
|
712
|
975 prompt = args(0).string_value (); |
|
636
|
976 |
|
|
977 if (error_state) |
|
|
978 { |
|
|
979 error ("input: unrecognized argument"); |
|
|
980 return retval; |
|
|
981 } |
|
529
|
982 } |
|
|
983 |
|
|
984 again: |
|
|
985 |
|
|
986 flush_output_to_pager (); |
|
|
987 |
|
|
988 char *input_buf = gnu_readline (prompt); |
|
|
989 |
|
|
990 if (input_buf) |
|
|
991 { |
|
|
992 maybe_save_history (input_buf); |
|
|
993 |
|
|
994 int len = strlen (input_buf); |
|
|
995 |
|
|
996 if (len < 1) |
|
|
997 { |
|
|
998 if (debug) |
|
|
999 goto again; |
|
|
1000 else |
|
963
|
1001 { |
|
|
1002 if (read_as_string) |
|
|
1003 return ""; |
|
|
1004 else |
|
|
1005 return Matrix (); |
|
|
1006 } |
|
529
|
1007 } |
|
|
1008 |
|
|
1009 if (match_sans_spaces ("exit", input_buf) |
|
|
1010 || match_sans_spaces ("quit", input_buf) |
|
|
1011 || match_sans_spaces ("return", input_buf)) |
|
963
|
1012 { |
|
|
1013 return retval; |
|
|
1014 } |
|
529
|
1015 else if (read_as_string) |
|
963
|
1016 { |
|
|
1017 retval = input_buf; |
|
|
1018 } |
|
529
|
1019 else |
|
|
1020 { |
|
|
1021 int parse_status = 0; |
|
|
1022 retval = eval_string (input_buf, 0, 0, parse_status); |
|
581
|
1023 if (retval.is_defined ()) |
|
|
1024 { |
|
|
1025 if (debug) |
|
|
1026 retval.eval (1); |
|
|
1027 } |
|
|
1028 else |
|
963
|
1029 retval = Matrix (); |
|
529
|
1030 } |
|
|
1031 } |
|
|
1032 else |
|
|
1033 error ("input: reading user-input failed!"); |
|
|
1034 |
|
|
1035 if (debug) |
|
|
1036 goto again; |
|
|
1037 |
|
|
1038 return retval; |
|
|
1039 } |
|
|
1040 |
|
712
|
1041 DEFUN ("input", Finput, Sinput, 2, 1, |
|
529
|
1042 "input (PROMPT [, S])\n\ |
|
|
1043 \n\ |
|
|
1044 Prompt user for input. If the second argument is present, return |
|
|
1045 value as a string.") |
|
|
1046 { |
|
|
1047 Octave_object retval; |
|
|
1048 |
|
|
1049 int nargin = args.length (); |
|
|
1050 |
|
712
|
1051 if (nargin == 1 || nargin == 2) |
|
529
|
1052 retval = get_user_input (args, nargout); |
|
|
1053 else |
|
|
1054 print_usage ("input"); |
|
|
1055 |
|
|
1056 return retval; |
|
|
1057 } |
|
|
1058 |
|
712
|
1059 DEFUN ("keyboard", Fkeyboard, Skeyboard, 1, 1, |
|
529
|
1060 "keyboard (PROMPT)\n\ |
|
|
1061 \n\ |
|
|
1062 maybe help in debugging function files") |
|
|
1063 { |
|
|
1064 Octave_object retval; |
|
|
1065 |
|
|
1066 int nargin = args.length (); |
|
|
1067 |
|
712
|
1068 if (nargin == 0 || nargin == 1) |
|
529
|
1069 retval = get_user_input (args, nargout, 1); |
|
|
1070 else |
|
|
1071 print_usage ("keyboard"); |
|
|
1072 |
|
|
1073 return retval; |
|
|
1074 } |
|
|
1075 |
|
1
|
1076 /* |
|
|
1077 ;;; Local Variables: *** |
|
|
1078 ;;; mode: C++ *** |
|
|
1079 ;;; page-delimiter: "^/\\*" *** |
|
|
1080 ;;; End: *** |
|
|
1081 */ |
