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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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1728
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47 #include <string> |
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48 |
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1349
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49 #include <iostream.h> |
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50 #include <strstream.h> |
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51 |
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1350
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52 #ifdef HAVE_UNISTD_H |
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529
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53 #include <sys/types.h> |
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54 #include <unistd.h> |
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55 #endif |
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1343
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56 |
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1
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57 // This must come before anything that includes iostream.h... |
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1350
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58 // (This is apparently no longer true...) |
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1466
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59 |
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1
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60 #include "readline/readline.h" |
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269
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61 #include "readline/history.h" |
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1
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62 |
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581
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63 // Yes, this sucks, but it avoids a conflict with another readline |
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64 // function declared in iostream.h. |
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1350
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65 // (Apparently, there isn't one there now...) |
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581
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66 |
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1
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67 #if 0 |
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68 #define LINE_SIZE 8192 |
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529
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69 static int no_line_editing = 0; |
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1
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70 #endif |
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71 |
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72 char * |
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1363
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73 gnu_readline (const char *s) |
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1
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74 { |
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75 #if 0 |
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76 static int state = 0; |
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529
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77 static char *line_from_stdin = 0; |
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1
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78 if (no_line_editing) |
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79 { |
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80 if (! state) |
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81 { |
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82 line_from_stdin = (char *) malloc (LINE_SIZE); |
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83 state = 1; |
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84 } |
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85 fputs ("octave> ", stdout); |
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86 fgets (line_from_stdin, LINE_SIZE, stdin); |
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87 return line_from_stdin; |
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88 } |
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89 else |
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90 #endif |
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91 return readline (s); |
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92 } |
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93 |
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1352
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94 #include "defun.h" |
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95 #include "dirfns.h" |
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1
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96 #include "error.h" |
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1352
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97 #include "help.h" |
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1
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98 #include "input.h" |
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1352
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99 #include "oct-map.h" |
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1742
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100 #include "oct-hist.h" |
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1670
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101 #include "toplev.h" |
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1
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102 #include "pager.h" |
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529
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103 #include "parse.h" |
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1352
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104 #include "pathlen.h" |
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105 #include "sighandlers.h" |
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106 #include "symtab.h" |
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1114
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107 #include "sysdep.h" |
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1742
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108 #include "pt-const.h" |
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109 #include "oct-obj.h" |
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1
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110 #include "user-prefs.h" |
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1352
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111 #include "utils.h" |
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112 #include "variables.h" |
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529
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113 |
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114 // The size that strings change by. |
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115 #ifndef DEFAULT_ARRAY_SIZE |
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116 #define DEFAULT_ARRAY_SIZE 512 |
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117 #endif |
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118 |
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119 // The growth rate for the prompt string. |
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120 #ifndef PROMPT_GROWTH |
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121 #define PROMPT_GROWTH 50 |
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122 #endif |
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1
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123 |
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124 // Global pointer for eval(). |
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529
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125 const char *current_eval_string = 0; |
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1
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126 |
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127 // Nonzero means get input from current_eval_string. |
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128 int get_input_from_eval_string = 0; |
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129 |
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338
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130 // Nonzero means we're parsing a function file. |
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131 int reading_fcn_file = 0; |
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1
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132 |
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338
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133 // Simple name of function file we are reading. |
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1606
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134 const char *curr_fcn_file_name = 0; |
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135 |
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136 // Full name of file we are reading. |
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137 const char *curr_fcn_file_full_name = 0; |
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1
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138 |
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139 // Nonzero means we're parsing a script file. |
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140 int reading_script_file = 0; |
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141 |
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142 // If we are reading from an M-file, this is it. |
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529
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143 FILE *ff_instream = 0; |
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1
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144 |
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145 // Nonzero means we are using readline. |
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146 int using_readline = 1; |
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147 |
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148 // Nonzero means this is an interactive shell. |
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149 int interactive = 0; |
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150 |
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151 // Nonzero means the user forced this shell to be interactive (-i). |
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152 int forced_interactive = 0; |
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153 |
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154 // Should we issue a prompt? |
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155 int promptflag = 1; |
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156 |
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157 // The current line of input, from wherever. |
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529
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158 char *current_input_line = 0; |
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1
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159 |
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160 // A line of input from readline. |
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529
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161 static char *octave_gets_line = 0; |
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162 |
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581
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163 // Append SOURCE to TARGET at INDEX. SIZE is the current amount of |
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164 // space allocated to TARGET. SOURCE can be NULL, in which case |
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165 // nothing happens. Gets rid of SOURCE by free ()ing it. Returns |
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166 // TARGET in case the location has changed. |
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167 |
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529
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168 static char * |
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169 sub_append_string (char *source, char *target, int *index, int *size) |
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170 { |
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171 if (source) |
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172 { |
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173 while ((int)strlen (source) >= (int)(*size - *index)) |
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174 { |
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175 char *tmp = new char [*size += DEFAULT_ARRAY_SIZE]; |
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176 strcpy (tmp, target); |
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177 delete [] target; |
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178 target = tmp; |
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179 } |
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180 |
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181 strcat (target, source); |
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182 *index += strlen (source); |
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183 |
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184 delete [] source; |
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185 } |
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186 return target; |
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187 } |
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188 |
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581
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189 // Return the octal number parsed from STRING, or -1 to indicate that |
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190 // the string contained a bad number. |
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191 |
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529
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192 int |
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193 read_octal (const char *string) |
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194 { |
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195 int result = 0; |
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196 int digits = 0; |
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197 |
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198 while (*string && *string >= '0' && *string < '8') |
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199 { |
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200 digits++; |
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201 result = (result * 8) + *string++ - '0'; |
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202 } |
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203 |
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204 if (! digits || result > 0777 || *string) |
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205 result = -1; |
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206 |
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207 return result; |
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208 } |
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209 |
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581
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210 // Return a string which will be printed as a prompt. The string may |
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211 // contain special characters which are decoded as follows: |
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212 // |
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213 // \t the time |
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214 // \d the date |
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215 // \n CRLF |
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216 // \s the name of the shell (program) |
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217 // \w the current working directory |
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218 // \W the last element of PWD |
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219 // \u your username |
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220 // \h the hostname |
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221 // \# the command number of this command |
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222 // \! the history number of this command |
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223 // \$ a $ or a # if you are root |
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224 // \<octal> character code in octal |
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225 // \\ a backslash |
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226 |
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529
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227 static char * |
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228 decode_prompt_string (const char *string) |
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229 { |
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230 int result_size = PROMPT_GROWTH; |
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231 int result_index = 0; |
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232 char *result = new char [PROMPT_GROWTH]; |
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233 int c; |
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234 char *temp = 0; |
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235 |
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236 result[0] = 0; |
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1215
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237 while ((c = *string++)) |
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529
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238 { |
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239 if (c == '\\') |
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240 { |
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241 c = *string; |
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242 |
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243 switch (c) |
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244 { |
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245 case '0': |
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246 case '1': |
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247 case '2': |
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248 case '3': |
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249 case '4': |
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250 case '5': |
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251 case '6': |
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252 case '7': |
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253 { |
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254 char octal_string[4]; |
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255 int n; |
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256 |
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257 strncpy (octal_string, string, 3); |
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258 octal_string[3] = '\0'; |
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259 |
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260 n = read_octal (octal_string); |
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261 |
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262 temp = strsave ("\\"); |
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263 if (n != -1) |
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264 { |
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265 string += 3; |
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266 temp[0] = n; |
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267 } |
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268 |
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269 c = 0; |
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270 goto add_string; |
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271 } |
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272 |
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273 case 't': |
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274 case 'd': |
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275 /* Make the current time/date into a string. */ |
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276 { |
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277 time_t the_time = time (0); |
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278 char *ttemp = ctime (&the_time); |
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279 temp = strsave (ttemp); |
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280 |
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281 if (c == 't') |
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282 { |
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283 strcpy (temp, temp + 11); |
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284 temp[8] = '\0'; |
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285 } |
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286 else |
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287 temp[10] = '\0'; |
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288 |
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289 goto add_string; |
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290 } |
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1
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291 |
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529
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292 case 'n': |
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293 if (! no_line_editing) |
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294 temp = strsave ("\r\n"); |
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295 else |
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296 temp = strsave ("\n"); |
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297 goto add_string; |
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298 |
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299 case 's': |
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300 { |
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301 temp = base_pathname (prog_name); |
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302 temp = strsave (temp); |
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303 goto add_string; |
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304 } |
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305 |
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306 case 'w': |
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307 case 'W': |
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308 { |
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309 char t_string[MAXPATHLEN]; |
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310 #define EFFICIENT |
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311 #ifdef EFFICIENT |
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312 |
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1358
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313 // Use the value of PWD because it is much more |
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314 // effecient. |
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529
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315 |
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316 temp = user_pref.pwd; |
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317 |
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318 if (! temp) |
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1112
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319 octave_getcwd (t_string, MAXPATHLEN); |
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529
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320 else |
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321 strcpy (t_string, temp); |
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322 #else |
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1112
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323 octave_getcwd (t_string, MAXPATHLEN); |
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529
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324 #endif /* EFFICIENT */ |
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325 |
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326 if (c == 'W') |
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327 { |
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328 char *dir = strrchr (t_string, '/'); |
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329 if (dir && dir != t_string) |
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330 strcpy (t_string, dir + 1); |
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331 temp = strsave (t_string); |
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332 } |
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333 else |
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334 temp = strsave (polite_directory_format (t_string)); |
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335 goto add_string; |
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336 } |
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337 |
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338 case 'u': |
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339 { |
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340 temp = strsave (user_name); |
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341 |
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342 goto add_string; |
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343 } |
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344 |
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345 case 'h': |
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346 { |
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347 char *t_string; |
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348 |
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349 temp = strsave (host_name); |
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1215
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350 t_string = strchr (temp, '.'); |
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351 if (t_string); |
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529
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352 *t_string = '\0'; |
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353 |
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354 goto add_string; |
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355 } |
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356 |
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357 case '#': |
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358 { |
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359 char number_buffer[128]; |
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360 sprintf (number_buffer, "%d", current_command_number); |
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361 temp = strsave (number_buffer); |
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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 int num = current_history_number (); |
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369 if (num > 0) |
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370 sprintf (number_buffer, "%d", num); |
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371 else |
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372 strcpy (number_buffer, "!"); |
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373 temp = strsave (number_buffer); |
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374 goto add_string; |
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375 } |
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376 |
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377 case '$': |
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378 temp = strsave (geteuid () == 0 ? "#" : "$"); |
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379 goto add_string; |
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380 |
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1568
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381 case '[': |
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382 case ']': |
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383 temp = new char[3]; |
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384 temp[0] = '\001'; |
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385 temp[1] = ((c == '[') |
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386 ? RL_PROMPT_START_IGNORE |
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387 : RL_PROMPT_END_IGNORE); |
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388 temp[2] = '\0'; |
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389 goto add_string; |
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390 |
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529
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391 case '\\': |
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392 temp = strsave ("\\"); |
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393 goto add_string; |
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394 |
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395 default: |
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396 temp = strsave ("\\ "); |
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397 temp[1] = c; |
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398 |
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399 add_string: |
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400 if (c) |
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401 string++; |
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402 result = |
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403 (char *)sub_append_string (temp, result, |
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404 &result_index, &result_size); |
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581
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405 temp = 0; // Free ()'ed in sub_append_string (). |
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529
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406 result[result_index] = '\0'; |
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407 break; |
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408 } |
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409 } |
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410 else |
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411 { |
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412 while (3 + result_index > result_size) |
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413 { |
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414 char *tmp = new char [result_size += PROMPT_GROWTH]; |
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415 strcpy (tmp, result); |
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416 delete [] result; |
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417 result = tmp; |
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418 } |
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419 result[result_index++] = c; |
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420 result[result_index] = '\0'; |
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|
421 } |
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|
422 } |
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423 |
|
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424 #if 0 |
|
1358
|
425 // I don't really think that this is a good idea. Do you? |
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426 |
|
529
|
427 if (! find_variable ("NO_PROMPT_VARS")) |
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|
428 { |
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429 WORD_LIST *expand_string (), *list; |
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430 char *string_list (); |
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431 |
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432 list = expand_string (result, 1); |
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433 free (result); |
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|
434 result = string_list (list); |
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435 dispose_words (list); |
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|
436 } |
|
|
437 #endif |
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|
438 |
|
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439 return result; |
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|
440 } |
|
581
|
441 |
|
1044
|
442 static void |
|
|
443 do_input_echo (const char *input_string) |
|
|
444 { |
|
1588
|
445 int do_echo = reading_script_file ? |
|
|
446 (user_pref.echo_executing_commands & ECHO_SCRIPTS) |
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|
447 : (user_pref.echo_executing_commands & ECHO_CMD_LINE); |
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|
448 |
|
|
449 if (do_echo) |
|
1044
|
450 { |
|
|
451 ostrstream buf; |
|
|
452 |
|
1403
|
453 if (forced_interactive) |
|
|
454 { |
|
|
455 char *ps = (promptflag > 0) ? user_pref.ps1 : user_pref.ps2; |
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|
456 char *prefix = decode_prompt_string (ps); |
|
|
457 buf << prefix; |
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|
458 delete [] prefix; |
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|
459 } |
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460 else |
|
1044
|
461 { |
|
|
462 char *prefix = decode_prompt_string (user_pref.ps4); |
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|
463 buf << prefix; |
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|
464 delete [] prefix; |
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|
465 } |
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466 |
|
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467 if (input_string) |
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468 { |
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469 buf << input_string; |
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470 int len = strlen (input_string); |
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471 if (input_string[len-1] != '\n') |
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|
472 buf << "\n"; |
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|
473 } |
|
|
474 |
|
|
475 maybe_page_output (buf); |
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|
476 } |
|
|
477 } |
|
|
478 |
|
581
|
479 // Use GNU readline to get an input line and store it in the history |
|
|
480 // list. |
|
|
481 |
|
287
|
482 static char * |
|
1
|
483 octave_gets (void) |
|
|
484 { |
|
529
|
485 if (octave_gets_line) |
|
126
|
486 { |
|
|
487 free (octave_gets_line); |
|
529
|
488 octave_gets_line = 0; |
|
126
|
489 } |
|
1
|
490 |
|
|
491 if (interactive || forced_interactive) |
|
|
492 { |
|
|
493 char *ps = (promptflag > 0) ? user_pref.ps1 : user_pref.ps2; |
|
|
494 char *prompt = decode_prompt_string (ps); |
|
|
495 |
|
|
496 if (interactive) |
|
|
497 { |
|
|
498 pipe_handler_error_count = 0; |
|
|
499 flush_output_to_pager (); |
|
|
500 } |
|
|
501 |
|
581
|
502 maybe_write_to_diary_file (prompt); |
|
|
503 |
|
1
|
504 octave_gets_line = gnu_readline (prompt); |
|
581
|
505 |
|
1
|
506 delete [] prompt; |
|
|
507 } |
|
|
508 else |
|
|
509 octave_gets_line = gnu_readline (""); |
|
|
510 |
|
|
511 current_input_line = octave_gets_line; |
|
|
512 |
|
|
513 if (octave_gets_line && *octave_gets_line) |
|
|
514 { |
|
|
515 maybe_save_history (octave_gets_line); |
|
|
516 |
|
581
|
517 maybe_write_to_diary_file (octave_gets_line); |
|
|
518 |
|
1044
|
519 do_input_echo (octave_gets_line); |
|
1
|
520 } |
|
581
|
521 |
|
|
522 maybe_write_to_diary_file ("\n"); |
|
|
523 |
|
1
|
524 return octave_gets_line; |
|
|
525 } |
|
|
526 |
|
581
|
527 // Read a line from the input stream. |
|
|
528 |
|
269
|
529 int |
|
1
|
530 octave_read (char *buf, int max_size) |
|
|
531 { |
|
|
532 int status = 0; |
|
|
533 |
|
529
|
534 static char *stashed_line = 0; |
|
1
|
535 |
|
|
536 if (get_input_from_eval_string) |
|
|
537 { |
|
|
538 int len = strlen (current_eval_string); |
|
|
539 if (len < max_size - 1) |
|
|
540 { |
|
|
541 strcpy (buf, current_eval_string); |
|
|
542 buf[len++] = '\n'; |
|
|
543 buf[len] = '\0'; // Paranoia. |
|
|
544 status = len; |
|
|
545 } |
|
|
546 else |
|
|
547 status = -1; |
|
|
548 |
|
|
549 if (stashed_line) |
|
|
550 delete [] stashed_line; |
|
|
551 |
|
|
552 stashed_line = strsave (buf); |
|
|
553 current_input_line = stashed_line; |
|
|
554 } |
|
|
555 else if (using_readline) |
|
|
556 { |
|
|
557 char *cp = octave_gets (); |
|
529
|
558 if (cp) |
|
1
|
559 { |
|
|
560 int len = strlen (cp); |
|
|
561 if (len >= max_size) |
|
|
562 status = -1; |
|
|
563 else |
|
|
564 { |
|
|
565 strcpy (buf, cp); |
|
|
566 buf[len++] = '\n'; |
|
|
567 buf[len] = '\0'; // Paranoia. |
|
|
568 status = len; |
|
|
569 } |
|
|
570 } |
|
|
571 current_input_line = cp; |
|
|
572 } |
|
|
573 else |
|
|
574 { |
|
|
575 FILE *curr_stream = rl_instream; |
|
338
|
576 if (reading_fcn_file || reading_script_file) |
|
339
|
577 curr_stream = ff_instream; |
|
1
|
578 |
|
529
|
579 assert (curr_stream); |
|
1
|
580 |
|
1358
|
581 // Why is this required? |
|
1
|
582 buf[0] = '\0'; |
|
|
583 |
|
529
|
584 if (fgets (buf, max_size, curr_stream)) |
|
1
|
585 { |
|
|
586 int len = strlen (buf); |
|
|
587 if (len > max_size - 2) |
|
|
588 status = -1; |
|
|
589 else |
|
|
590 { |
|
|
591 if (buf[len-1] != '\n') |
|
|
592 { |
|
|
593 buf[len++] = '\n'; |
|
|
594 buf[len] = '\0'; |
|
|
595 } |
|
|
596 status = len; |
|
|
597 } |
|
|
598 } |
|
|
599 else |
|
|
600 status = 0; // Tell yylex that we found EOF. |
|
|
601 |
|
|
602 if (stashed_line) |
|
|
603 delete [] stashed_line; |
|
|
604 |
|
|
605 stashed_line = strsave (buf); |
|
1044
|
606 |
|
1
|
607 current_input_line = stashed_line; |
|
287
|
608 |
|
1044
|
609 do_input_echo (current_input_line); |
|
|
610 } |
|
287
|
611 |
|
1
|
612 input_line_number++; |
|
1044
|
613 |
|
1
|
614 return status; |
|
|
615 } |
|
|
616 |
|
581
|
617 // Fix things up so that input can come from file `name', printing a |
|
|
618 // warning if the file doesn't exist. |
|
|
619 |
|
1
|
620 FILE * |
|
1604
|
621 get_input_from_file (const char *name, int warn) |
|
1
|
622 { |
|
529
|
623 FILE *instream = 0; |
|
1
|
624 |
|
|
625 if (name && *name) |
|
|
626 instream = fopen (name, "r"); |
|
|
627 |
|
529
|
628 if (! instream && warn) |
|
217
|
629 warning ("%s: no such file or directory", name); |
|
1
|
630 |
|
338
|
631 if (reading_fcn_file || reading_script_file) |
|
339
|
632 ff_instream = instream; |
|
1
|
633 else |
|
|
634 rl_instream = instream; |
|
|
635 |
|
|
636 return instream; |
|
|
637 } |
|
|
638 |
|
581
|
639 // Fix things up so that input can come from the standard input. This |
|
|
640 // may need to become much more complicated, which is why it's in a |
|
|
641 // separate function. |
|
|
642 |
|
1
|
643 FILE * |
|
|
644 get_input_from_stdin (void) |
|
|
645 { |
|
|
646 rl_instream = stdin; |
|
|
647 return rl_instream; |
|
|
648 } |
|
|
649 |
|
1280
|
650 static char ** |
|
|
651 generate_struct_completions (const char *text, char *& prefix, |
|
|
652 char *& hint) |
|
|
653 { |
|
|
654 char **names = 0; |
|
|
655 |
|
1288
|
656 assert (text); |
|
|
657 |
|
1280
|
658 char *id = strsave (text); |
|
|
659 char *ptr = strchr (id, '.'); |
|
|
660 *ptr = '\0'; |
|
|
661 |
|
|
662 char *elts = ptr + 1; |
|
|
663 ptr = strrchr (elts, '.'); |
|
|
664 if (ptr) |
|
|
665 *ptr = '\0'; |
|
|
666 else |
|
|
667 elts = 0; |
|
|
668 |
|
|
669 prefix = strsave (text); |
|
|
670 ptr = strrchr (prefix, '.'); |
|
|
671 *ptr = '\0'; |
|
|
672 |
|
1288
|
673 delete [] hint; |
|
1280
|
674 hint = strsave (ptr + 1); |
|
|
675 |
|
|
676 symbol_record *sr = curr_sym_tab->lookup (id, 0, 0); |
|
|
677 if (! sr) |
|
|
678 sr = global_sym_tab->lookup (id, 0, 0); |
|
|
679 |
|
|
680 if (sr && sr->is_defined ()) |
|
|
681 { |
|
|
682 tree_fvc *tmp_fvc = sr->def (); |
|
|
683 |
|
|
684 tree_constant *def = 0; |
|
|
685 if (tmp_fvc->is_constant ()) |
|
|
686 def = (tree_constant *) tmp_fvc; |
|
|
687 |
|
|
688 if (def && def->is_map ()) |
|
|
689 { |
|
|
690 if (elts && *elts) |
|
|
691 { |
|
|
692 tree_constant ult = def->lookup_map_element (elts, 0, 1); |
|
|
693 |
|
|
694 if (ult.is_map ()) |
|
|
695 { |
|
|
696 Octave_map m = ult.map_value (); |
|
|
697 names = m.make_name_list (); |
|
|
698 } |
|
|
699 } |
|
|
700 else |
|
|
701 { |
|
|
702 Octave_map m = def->map_value (); |
|
|
703 names = m.make_name_list (); |
|
|
704 } |
|
|
705 } |
|
|
706 } |
|
|
707 |
|
|
708 delete [] id; |
|
|
709 |
|
|
710 return names; |
|
|
711 } |
|
|
712 |
|
1430
|
713 // XXX FIXME XXX -- make this generate file names when appropriate. |
|
|
714 |
|
1280
|
715 static char ** |
|
|
716 generate_possible_completions (const char *text, char *& prefix, |
|
|
717 char *& hint) |
|
1
|
718 { |
|
1280
|
719 char **names = 0; |
|
|
720 |
|
|
721 prefix = 0; |
|
|
722 |
|
1430
|
723 if (text && *text && *text != '.' && strrchr (text, '.')) |
|
|
724 names = generate_struct_completions (text, prefix, hint); |
|
|
725 else |
|
|
726 names = make_name_list (); |
|
1280
|
727 |
|
|
728 return names; |
|
|
729 } |
|
|
730 |
|
|
731 static int |
|
|
732 looks_like_struct (const char *nm) |
|
|
733 { |
|
|
734 int retval = 0; |
|
|
735 |
|
1288
|
736 assert (nm); |
|
|
737 |
|
1280
|
738 char *id = strsave (nm); |
|
|
739 char *elts = 0; |
|
|
740 char *ptr = strchr (id, '.'); |
|
|
741 if (ptr) |
|
|
742 { |
|
|
743 *ptr = '\0'; |
|
|
744 elts = ptr + 1; |
|
|
745 } |
|
|
746 |
|
|
747 symbol_record *sr = curr_sym_tab->lookup (id, 0, 0); |
|
|
748 if (! sr) |
|
|
749 sr = global_sym_tab->lookup (id, 0, 0); |
|
|
750 |
|
|
751 if (sr && sr->is_defined ()) |
|
|
752 { |
|
|
753 tree_fvc *tmp_fvc = sr->def (); |
|
|
754 |
|
|
755 tree_constant *def = 0; |
|
|
756 if (tmp_fvc->is_constant ()) |
|
|
757 def = (tree_constant *) tmp_fvc; |
|
|
758 |
|
|
759 if (def && def->is_map ()) |
|
|
760 { |
|
|
761 if (elts && *elts) |
|
|
762 { |
|
|
763 tree_constant ult = def->lookup_map_element (elts, 0, 1); |
|
|
764 |
|
|
765 if (ult.is_map ()) |
|
|
766 retval = 1; |
|
|
767 } |
|
|
768 else |
|
|
769 retval = 1; |
|
|
770 } |
|
|
771 } |
|
|
772 |
|
|
773 delete [] id; |
|
|
774 |
|
|
775 return retval; |
|
|
776 } |
|
|
777 |
|
|
778 static char * |
|
|
779 command_generator (const char *text, int state) |
|
|
780 { |
|
|
781 static char *prefix = 0; |
|
|
782 static char *hint = 0; |
|
|
783 |
|
|
784 static int prefix_len = 0; |
|
|
785 static int hint_len = 0; |
|
|
786 |
|
1
|
787 static int list_index = 0; |
|
1280
|
788 static char **name_list = 0; |
|
1
|
789 |
|
1280
|
790 static int matches = 0; |
|
1
|
791 |
|
|
792 if (state == 0) |
|
|
793 { |
|
|
794 list_index = 0; |
|
|
795 |
|
529
|
796 if (name_list) |
|
244
|
797 { |
|
|
798 char **ptr = name_list; |
|
|
799 while (ptr && *ptr) |
|
|
800 delete [] *ptr++; |
|
1280
|
801 |
|
244
|
802 delete [] name_list; |
|
1280
|
803 |
|
|
804 name_list = 0; |
|
244
|
805 } |
|
1
|
806 |
|
1280
|
807 delete [] prefix; |
|
|
808 prefix = 0; |
|
|
809 |
|
|
810 delete [] hint; |
|
1288
|
811 hint = strsave (text); |
|
1280
|
812 |
|
|
813 name_list = generate_possible_completions (text, prefix, hint); |
|
|
814 |
|
|
815 prefix_len = 0; |
|
|
816 if (prefix) |
|
1288
|
817 prefix_len = strlen (prefix); |
|
1280
|
818 |
|
1288
|
819 assert (hint); |
|
|
820 hint_len = strlen (hint); |
|
1280
|
821 |
|
|
822 matches = 0; |
|
|
823 if (name_list) |
|
|
824 { |
|
|
825 int i = 0; |
|
|
826 while (name_list[i]) |
|
|
827 if (strncmp (name_list[i++], hint, hint_len) == 0) |
|
|
828 matches++; |
|
|
829 } |
|
1
|
830 } |
|
|
831 |
|
1280
|
832 if (name_list && matches) |
|
1
|
833 { |
|
1280
|
834 char *name; |
|
|
835 while ((name = name_list[list_index]) != 0) |
|
244
|
836 { |
|
1280
|
837 list_index++; |
|
|
838 if (strncmp (name, hint, hint_len) == 0) |
|
|
839 { |
|
1288
|
840 int len = 2 + prefix_len + strlen (name); |
|
1466
|
841 char *buf = (char *) malloc (len); |
|
1280
|
842 |
|
|
843 if (prefix) |
|
|
844 { |
|
|
845 strcpy (buf, prefix); |
|
|
846 strcat (buf, "."); |
|
|
847 strcat (buf, name); |
|
|
848 } |
|
|
849 else |
|
|
850 strcpy (buf, name); |
|
|
851 |
|
|
852 if (matches == 1 && looks_like_struct (buf)) |
|
|
853 rl_completion_append_character = '.'; |
|
|
854 else |
|
1430
|
855 rl_completion_append_character |
|
|
856 = user_pref.completion_append_char; |
|
1280
|
857 |
|
|
858 return buf; |
|
|
859 } |
|
244
|
860 } |
|
1
|
861 } |
|
|
862 |
|
529
|
863 return 0; |
|
1
|
864 } |
|
|
865 |
|
269
|
866 static char ** |
|
1488
|
867 command_completer (char *text, int /* start */, int /* end */) |
|
1
|
868 { |
|
529
|
869 char **matches = 0; |
|
1
|
870 matches = completion_matches (text, command_generator); |
|
|
871 return matches; |
|
|
872 } |
|
|
873 |
|
581
|
874 // The next two functions implement the equivalent of the K*rn shell |
|
|
875 // C-o operate-and-get-next-history-line editing command. Stolen from |
|
|
876 // the GNU Bourne Again SHell. |
|
269
|
877 |
|
|
878 // ?? |
|
|
879 static int saved_history_line_to_use = 0; |
|
|
880 |
|
|
881 // ?? |
|
529
|
882 static Function *old_rl_startup_hook = 0; |
|
269
|
883 |
|
|
884 static void |
|
|
885 set_saved_history (void) |
|
|
886 { |
|
|
887 HIST_ENTRY *h; |
|
|
888 |
|
|
889 if (saved_history_line_to_use) |
|
|
890 { |
|
|
891 if (history_set_pos (saved_history_line_to_use)) |
|
|
892 { |
|
|
893 h = current_history (); |
|
|
894 if (h) |
|
|
895 { |
|
|
896 rl_insert_text (h->line); |
|
|
897 |
|
1358
|
898 // Get rid of any undo list created by the previous |
|
|
899 // insert, so the line won't totally be erased when the |
|
|
900 // edits are undone (they will be normally, because this |
|
|
901 // is a history line -- cf. readline.c: line 380 or |
|
|
902 // so). |
|
|
903 |
|
269
|
904 if (rl_undo_list) |
|
|
905 { |
|
|
906 free_undo_list (); |
|
529
|
907 rl_undo_list = 0; |
|
269
|
908 } |
|
|
909 } |
|
|
910 } |
|
|
911 } |
|
|
912 saved_history_line_to_use = 0; |
|
|
913 rl_startup_hook = old_rl_startup_hook; |
|
|
914 } |
|
|
915 |
|
|
916 static void |
|
1488
|
917 operate_and_get_next (int /* count */, int /* c */) |
|
269
|
918 { |
|
|
919 int where; |
|
|
920 |
|
1358
|
921 // Accept the current line. |
|
|
922 |
|
269
|
923 rl_newline (); |
|
|
924 |
|
1358
|
925 // Find the current line, and find the next line to use. |
|
|
926 |
|
269
|
927 where = where_history (); |
|
|
928 |
|
1430
|
929 if ((history_is_stifled () && (history_length >= max_input_history)) |
|
|
930 || (where >= history_length - 1)) |
|
269
|
931 saved_history_line_to_use = where; |
|
|
932 else |
|
|
933 saved_history_line_to_use = where + 1; |
|
|
934 |
|
|
935 old_rl_startup_hook = rl_startup_hook; |
|
|
936 rl_startup_hook = (Function *) set_saved_history; |
|
|
937 } |
|
|
938 |
|
1
|
939 void |
|
|
940 initialize_readline (void) |
|
|
941 { |
|
1705
|
942 // Set things up internally in case some function that uses readline |
|
|
943 // (currently Fclc(), maybe others) is called before readline(). |
|
|
944 |
|
|
945 rl_initialize (); |
|
|
946 |
|
1358
|
947 // Allow conditional parsing of the ~/.inputrc file |
|
|
948 |
|
1
|
949 rl_readline_name = "Octave"; |
|
|
950 |
|
1358
|
951 // Tell the completer that we want to try first. |
|
|
952 |
|
271
|
953 rl_attempted_completion_function = (CPPFunction *) command_completer; |
|
269
|
954 |
|
1358
|
955 // Bind operate-and-get-next. |
|
|
956 |
|
269
|
957 rl_add_defun ("operate-and-get-next", |
|
|
958 (Function *) operate_and_get_next, CTRL ('O')); |
|
1441
|
959 |
|
1569
|
960 |
|
|
961 // And the history search functions. |
|
|
962 |
|
|
963 rl_add_defun ("history-search-backward", |
|
|
964 (Function *) rl_history_search_backward, META ('p')); |
|
|
965 |
|
|
966 rl_add_defun ("history-search-forward", |
|
|
967 (Function *) rl_history_search_forward, META ('n')); |
|
|
968 |
|
1441
|
969 // Don't treat single quotes as string delimiters when doing paren |
|
|
970 // matching. |
|
|
971 |
|
|
972 rl_paren_string_delimiters = "\""; |
|
1
|
973 } |
|
|
974 |
|
529
|
975 static int |
|
|
976 match_sans_spaces (const char *standard, const char *test) |
|
|
977 { |
|
1034
|
978 char *tmp = strsave (test); |
|
|
979 |
|
|
980 char *tp = tmp; |
|
529
|
981 while (*tp == ' ' || *tp == '\t') |
|
|
982 tp++; |
|
|
983 |
|
1125
|
984 char *ep = tmp + strlen (tmp) - 1; |
|
529
|
985 while (*ep == ' ' || *ep == '\t') |
|
|
986 ep--; |
|
|
987 |
|
1034
|
988 *(ep+1) = '\0'; |
|
|
989 |
|
|
990 int retval = strcmp (standard, tp) == 0; |
|
529
|
991 |
|
1034
|
992 delete [] tmp; |
|
|
993 |
|
|
994 return retval; |
|
|
995 |
|
529
|
996 } |
|
|
997 |
|
581
|
998 // If the user simply hits return, this will produce an empty matrix. |
|
|
999 |
|
529
|
1000 static Octave_object |
|
1488
|
1001 get_user_input (const Octave_object& args, int debug = 0) |
|
529
|
1002 { |
|
|
1003 tree_constant retval; |
|
|
1004 |
|
|
1005 int nargin = args.length (); |
|
|
1006 |
|
|
1007 int read_as_string = 0; |
|
|
1008 |
|
712
|
1009 if (nargin == 2) |
|
529
|
1010 read_as_string++; |
|
|
1011 |
|
1363
|
1012 const char *prompt = "debug> "; |
|
1728
|
1013 string tstr; |
|
712
|
1014 if (nargin > 0) |
|
529
|
1015 { |
|
1728
|
1016 tstr = args(0).string_value (); |
|
|
1017 prompt = tstr.c_str (); |
|
636
|
1018 |
|
|
1019 if (error_state) |
|
|
1020 { |
|
|
1021 error ("input: unrecognized argument"); |
|
|
1022 return retval; |
|
|
1023 } |
|
529
|
1024 } |
|
|
1025 |
|
|
1026 again: |
|
|
1027 |
|
|
1028 flush_output_to_pager (); |
|
|
1029 |
|
|
1030 char *input_buf = gnu_readline (prompt); |
|
|
1031 |
|
|
1032 if (input_buf) |
|
|
1033 { |
|
|
1034 maybe_save_history (input_buf); |
|
|
1035 |
|
|
1036 int len = strlen (input_buf); |
|
|
1037 |
|
|
1038 if (len < 1) |
|
|
1039 { |
|
|
1040 if (debug) |
|
|
1041 goto again; |
|
|
1042 else |
|
963
|
1043 { |
|
|
1044 if (read_as_string) |
|
|
1045 return ""; |
|
|
1046 else |
|
|
1047 return Matrix (); |
|
|
1048 } |
|
529
|
1049 } |
|
|
1050 |
|
|
1051 if (match_sans_spaces ("exit", input_buf) |
|
|
1052 || match_sans_spaces ("quit", input_buf) |
|
|
1053 || match_sans_spaces ("return", input_buf)) |
|
963
|
1054 { |
|
|
1055 return retval; |
|
|
1056 } |
|
529
|
1057 else if (read_as_string) |
|
963
|
1058 { |
|
|
1059 retval = input_buf; |
|
|
1060 } |
|
529
|
1061 else |
|
|
1062 { |
|
|
1063 int parse_status = 0; |
|
1488
|
1064 retval = eval_string (input_buf, 0, parse_status); |
|
581
|
1065 if (retval.is_defined ()) |
|
|
1066 { |
|
|
1067 if (debug) |
|
|
1068 retval.eval (1); |
|
|
1069 } |
|
|
1070 else |
|
963
|
1071 retval = Matrix (); |
|
529
|
1072 } |
|
|
1073 } |
|
|
1074 else |
|
|
1075 error ("input: reading user-input failed!"); |
|
|
1076 |
|
|
1077 if (debug) |
|
|
1078 goto again; |
|
|
1079 |
|
|
1080 return retval; |
|
|
1081 } |
|
|
1082 |
|
1488
|
1083 DEFUN ("input", Finput, Sinput, 10, |
|
529
|
1084 "input (PROMPT [, S])\n\ |
|
|
1085 \n\ |
|
|
1086 Prompt user for input. If the second argument is present, return |
|
|
1087 value as a string.") |
|
|
1088 { |
|
|
1089 Octave_object retval; |
|
|
1090 |
|
|
1091 int nargin = args.length (); |
|
|
1092 |
|
712
|
1093 if (nargin == 1 || nargin == 2) |
|
1488
|
1094 retval = get_user_input (args); |
|
529
|
1095 else |
|
|
1096 print_usage ("input"); |
|
|
1097 |
|
|
1098 return retval; |
|
|
1099 } |
|
|
1100 |
|
1488
|
1101 DEFUN ("keyboard", Fkeyboard, Skeyboard, 10, |
|
529
|
1102 "keyboard (PROMPT)\n\ |
|
|
1103 \n\ |
|
|
1104 maybe help in debugging function files") |
|
|
1105 { |
|
|
1106 Octave_object retval; |
|
|
1107 |
|
|
1108 int nargin = args.length (); |
|
|
1109 |
|
712
|
1110 if (nargin == 0 || nargin == 1) |
|
1488
|
1111 retval = get_user_input (args, 1); |
|
529
|
1112 else |
|
|
1113 print_usage ("keyboard"); |
|
|
1114 |
|
|
1115 return retval; |
|
|
1116 } |
|
|
1117 |
|
1588
|
1118 DEFUN_TEXT("echo", Fecho, Secho, 10, |
|
|
1119 "echo [options]\n\ |
|
|
1120 \n\ |
|
|
1121 echo [on|off] -- enable or disable echoing of commands as\n\ |
|
|
1122 they are executed in script files\n\ |
|
|
1123 \n\ |
|
|
1124 echo [on all|off all] -- enable or disable echoing of commands as they\n\ |
|
|
1125 are executed in script files and functions\n\ |
|
|
1126 \n\ |
|
|
1127 Without any arguments, toggle the current echo state.") |
|
|
1128 { |
|
|
1129 Octave_object retval; |
|
|
1130 |
|
|
1131 DEFINE_ARGV ("echo"); |
|
|
1132 |
|
|
1133 switch (argc) |
|
|
1134 { |
|
|
1135 case 1: |
|
|
1136 { |
|
|
1137 int echo_cmds = user_pref.echo_executing_commands; |
|
|
1138 if ((echo_cmds & ECHO_SCRIPTS) || (echo_cmds & ECHO_FUNCTIONS)) |
|
|
1139 bind_builtin_variable ("echo_executing_commands", ECHO_OFF); |
|
|
1140 else |
|
|
1141 bind_builtin_variable ("echo_executing_commands", ECHO_SCRIPTS); |
|
|
1142 } |
|
|
1143 break; |
|
|
1144 |
|
|
1145 case 2: |
|
|
1146 { |
|
|
1147 char *arg = argv[1]; |
|
|
1148 if (strcmp (arg, "on") == 0) |
|
|
1149 bind_builtin_variable ("echo_executing_commands", ECHO_SCRIPTS); |
|
1590
|
1150 else if (strcmp (arg, "off") == 0) |
|
1588
|
1151 bind_builtin_variable ("echo_executing_commands", ECHO_OFF); |
|
|
1152 else |
|
|
1153 print_usage ("echo"); |
|
|
1154 } |
|
|
1155 break; |
|
|
1156 |
|
|
1157 case 3: |
|
|
1158 { |
|
|
1159 char *arg = argv[1]; |
|
|
1160 if (strcmp (arg, "on") == 0 && strcmp (argv[2], "all") == 0) |
|
|
1161 bind_builtin_variable ("echo_executing_commands", |
|
|
1162 (ECHO_SCRIPTS | ECHO_FUNCTIONS)); |
|
|
1163 else if (strcmp (arg, "off") == 0 && strcmp (argv[2], "all") == 0) |
|
|
1164 bind_builtin_variable ("echo_executing_commands", ECHO_OFF); |
|
|
1165 else |
|
|
1166 print_usage ("echo"); |
|
|
1167 } |
|
|
1168 break; |
|
|
1169 |
|
|
1170 default: |
|
|
1171 print_usage ("echo"); |
|
|
1172 break; |
|
|
1173 } |
|
|
1174 |
|
|
1175 DELETE_ARGV; |
|
|
1176 |
|
|
1177 return retval; |
|
|
1178 } |
|
|
1179 |
|
1
|
1180 /* |
|
|
1181 ;;; Local Variables: *** |
|
|
1182 ;;; mode: C++ *** |
|
|
1183 ;;; page-delimiter: "^/\\*" *** |
|
|
1184 ;;; End: *** |
|
|
1185 */ |
