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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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1884
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4 Copyright (C) 1996 John W. Eaton |
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1
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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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1
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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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1822
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26 The 2 functions listed below were adapted from similar functions |
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661
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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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1822
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30 read_octal decode_prompt_string |
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661
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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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1755
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63 #include "str-vec.h" |
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64 |
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1352
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65 #include "defun.h" |
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66 #include "dirfns.h" |
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1
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67 #include "error.h" |
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1352
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68 #include "help.h" |
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1
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69 #include "input.h" |
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1352
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70 #include "oct-map.h" |
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1742
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71 #include "oct-hist.h" |
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1670
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72 #include "toplev.h" |
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1755
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73 #include "oct-obj.h" |
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1
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74 #include "pager.h" |
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529
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75 #include "parse.h" |
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1352
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76 #include "pathlen.h" |
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1755
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77 #include "pt-const.h" |
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1352
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78 #include "sighandlers.h" |
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79 #include "symtab.h" |
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1114
|
80 #include "sysdep.h" |
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1
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81 #include "user-prefs.h" |
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1352
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82 #include "utils.h" |
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83 #include "variables.h" |
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529
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84 |
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1
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85 // Global pointer for eval(). |
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1755
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86 string current_eval_string; |
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1
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87 |
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88 // Nonzero means get input from current_eval_string. |
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89 int get_input_from_eval_string = 0; |
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90 |
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338
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91 // Nonzero means we're parsing a function file. |
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92 int reading_fcn_file = 0; |
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1
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93 |
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338
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94 // Simple name of function file we are reading. |
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1755
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95 string curr_fcn_file_name; |
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1606
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96 |
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97 // Full name of file we are reading. |
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1755
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98 string curr_fcn_file_full_name; |
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1
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99 |
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100 // Nonzero means we're parsing a script file. |
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101 int reading_script_file = 0; |
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102 |
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103 // If we are reading from an M-file, this is it. |
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529
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104 FILE *ff_instream = 0; |
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1
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105 |
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106 // Nonzero means this is an interactive shell. |
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107 int interactive = 0; |
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108 |
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109 // Nonzero means the user forced this shell to be interactive (-i). |
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110 int forced_interactive = 0; |
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111 |
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112 // Should we issue a prompt? |
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113 int promptflag = 1; |
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114 |
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115 // The current line of input, from wherever. |
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1755
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116 string current_input_line; |
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1
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117 |
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581
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118 // Return the octal number parsed from STRING, or -1 to indicate that |
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119 // the string contained a bad number. |
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120 |
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1822
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121 static int |
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1755
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122 read_octal (const string& s) |
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529
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123 { |
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124 int result = 0; |
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125 int digits = 0; |
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126 |
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1755
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127 size_t i = 0; |
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128 size_t slen = s.length (); |
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129 |
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130 while (i < slen && s[i] >= '0' && s[i] < '8') |
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529
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131 { |
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132 digits++; |
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1755
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133 result = (result * 8) + s[i] - '0'; |
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134 i++; |
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529
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135 } |
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136 |
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1755
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137 if (! digits || result > 0777 || i < slen) |
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529
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138 result = -1; |
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139 |
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140 return result; |
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141 } |
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142 |
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581
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143 // Return a string which will be printed as a prompt. The string may |
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144 // contain special characters which are decoded as follows: |
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145 // |
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146 // \t the time |
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147 // \d the date |
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148 // \n CRLF |
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149 // \s the name of the shell (program) |
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150 // \w the current working directory |
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151 // \W the last element of PWD |
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152 // \u your username |
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153 // \h the hostname |
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154 // \# the command number of this command |
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155 // \! the history number of this command |
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156 // \$ a $ or a # if you are root |
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157 // \<octal> character code in octal |
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158 // \\ a backslash |
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159 |
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1755
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160 static string |
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161 decode_prompt_string (const string& s) |
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529
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162 { |
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1755
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163 string result; |
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164 string temp; |
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165 size_t i = 0; |
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166 size_t slen = s.length (); |
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529
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167 int c; |
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168 |
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1755
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169 while (i < slen) |
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529
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170 { |
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1755
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171 c = s[i]; |
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172 |
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173 i++; |
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174 |
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529
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175 if (c == '\\') |
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176 { |
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1755
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177 c = s[i]; |
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529
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178 |
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179 switch (c) |
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180 { |
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181 case '0': |
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182 case '1': |
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183 case '2': |
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184 case '3': |
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185 case '4': |
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186 case '5': |
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187 case '6': |
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188 case '7': |
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1755
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189 // Maybe convert an octal number. |
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529
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190 { |
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1755
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191 int n = read_octal (s.substr (i, 3)); |
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529
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192 |
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1755
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193 temp = "\\"; |
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529
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194 |
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195 if (n != -1) |
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196 { |
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1755
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197 i += 3; |
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529
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198 temp[0] = n; |
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199 } |
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200 |
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201 c = 0; |
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202 goto add_string; |
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203 } |
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204 |
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205 case 't': |
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206 case 'd': |
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1755
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207 // Make the current time/date into a string. |
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529
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208 { |
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1755
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209 time_t now = time (0); |
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210 |
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211 temp = ctime (&now); |
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529
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212 |
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213 if (c == 't') |
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214 { |
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1755
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215 temp = temp.substr (11); |
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216 temp.resize (8); |
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529
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217 } |
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218 else |
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1755
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219 temp.resize (10); |
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529
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220 |
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221 goto add_string; |
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222 } |
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1
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223 |
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529
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224 case 'n': |
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1755
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225 { |
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1822
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226 if (using_readline) |
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1755
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227 temp = "\r\n"; |
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228 else |
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229 temp = "\n"; |
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230 |
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231 goto add_string; |
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232 } |
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529
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233 |
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234 case 's': |
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235 { |
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236 temp = base_pathname (prog_name); |
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1755
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237 |
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529
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238 goto add_string; |
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239 } |
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240 |
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241 case 'w': |
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242 case 'W': |
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243 { |
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244 #define EFFICIENT |
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245 #ifdef EFFICIENT |
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1358
|
246 // Use the value of PWD because it is much more |
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247 // effecient. |
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529
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248 |
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249 temp = user_pref.pwd; |
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250 |
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1755
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251 if (temp.empty ()) |
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252 temp = octave_getcwd (); |
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529
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253 #else |
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1755
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254 temp = octave_getcwd (); |
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529
|
255 #endif /* EFFICIENT */ |
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256 |
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257 if (c == 'W') |
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258 { |
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1755
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259 size_t pos = temp.rfind ('/'); |
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260 |
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261 if (pos != NPOS && pos != 0) |
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262 temp = temp.substr (pos + 1); |
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529
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263 } |
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264 else |
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1755
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265 temp = polite_directory_format (temp); |
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266 |
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529
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267 goto add_string; |
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268 } |
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269 |
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270 case 'u': |
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271 { |
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1755
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272 temp = user_name; |
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529
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273 |
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274 goto add_string; |
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275 } |
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276 |
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277 case 'h': |
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278 { |
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1755
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279 temp = host_name; |
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529
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280 |
|
1755
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281 size_t pos = temp.find ('.'); |
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282 |
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283 if (pos != NPOS) |
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284 temp.resize (pos); |
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529
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285 |
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286 goto add_string; |
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287 } |
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288 |
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289 case '#': |
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290 { |
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291 char number_buffer[128]; |
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292 sprintf (number_buffer, "%d", current_command_number); |
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1755
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293 temp = number_buffer; |
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294 |
|
529
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295 goto add_string; |
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296 } |
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297 |
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298 case '!': |
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299 { |
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300 char number_buffer[128]; |
|
1799
|
301 int num = octave_command_history.current_number (); |
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529
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302 if (num > 0) |
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303 sprintf (number_buffer, "%d", num); |
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304 else |
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305 strcpy (number_buffer, "!"); |
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1755
|
306 temp = number_buffer; |
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|
307 |
|
529
|
308 goto add_string; |
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309 } |
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310 |
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311 case '$': |
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1755
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312 { |
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313 temp = (geteuid () == 0 ? "#" : "$"); |
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314 |
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315 goto add_string; |
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316 } |
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529
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317 |
|
1568
|
318 case '[': |
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319 case ']': |
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1755
|
320 { |
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321 temp.resize (2); |
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322 |
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323 temp[0] = '\001'; |
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324 temp[1] = ((c == '[') |
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325 ? RL_PROMPT_START_IGNORE |
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326 : RL_PROMPT_END_IGNORE); |
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327 |
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328 goto add_string; |
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329 } |
|
1568
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330 |
|
529
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331 case '\\': |
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1755
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332 { |
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333 temp = "\\"; |
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334 |
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335 goto add_string; |
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336 } |
|
529
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337 |
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338 default: |
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1755
|
339 { |
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340 temp = "\\ "; |
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341 temp[1] = c; |
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342 |
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343 goto add_string; |
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344 } |
|
529
|
345 |
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346 add_string: |
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1755
|
347 { |
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348 if (c) |
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|
349 i++; |
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350 |
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351 result.append (temp); |
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352 |
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353 break; |
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354 } |
|
529
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355 } |
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356 } |
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357 else |
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1755
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358 result += c; |
|
529
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359 } |
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|
360 |
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361 return result; |
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|
362 } |
|
581
|
363 |
|
1044
|
364 static void |
|
1755
|
365 do_input_echo (const string& input_string) |
|
1044
|
366 { |
|
1588
|
367 int do_echo = reading_script_file ? |
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|
368 (user_pref.echo_executing_commands & ECHO_SCRIPTS) |
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|
369 : (user_pref.echo_executing_commands & ECHO_CMD_LINE); |
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370 |
|
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371 if (do_echo) |
|
1044
|
372 { |
|
|
373 ostrstream buf; |
|
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374 |
|
1403
|
375 if (forced_interactive) |
|
|
376 { |
|
1755
|
377 if (promptflag > 0) |
|
|
378 buf << decode_prompt_string (user_pref.ps1); |
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|
379 else |
|
|
380 buf << decode_prompt_string (user_pref.ps2); |
|
1403
|
381 } |
|
|
382 else |
|
1755
|
383 buf << decode_prompt_string (user_pref.ps4); |
|
1044
|
384 |
|
1755
|
385 if (! input_string.empty ()) |
|
1044
|
386 { |
|
|
387 buf << input_string; |
|
1755
|
388 |
|
|
389 if (input_string[input_string.length () - 1] != '\n') |
|
1044
|
390 buf << "\n"; |
|
|
391 } |
|
|
392 |
|
|
393 maybe_page_output (buf); |
|
|
394 } |
|
|
395 } |
|
|
396 |
|
1822
|
397 char * |
|
|
398 gnu_readline (const char *s) |
|
|
399 { |
|
|
400 char *retval = 0; |
|
|
401 |
|
|
402 if (using_readline) |
|
|
403 { |
|
|
404 retval = ::readline (s); |
|
|
405 } |
|
|
406 else |
|
|
407 { |
|
|
408 if (s && *s && (interactive || forced_interactive)) |
|
|
409 fprintf (rl_outstream, s); |
|
|
410 |
|
|
411 FILE *curr_stream = rl_instream; |
|
|
412 if (reading_fcn_file || reading_script_file) |
|
|
413 curr_stream = ff_instream; |
|
|
414 |
|
|
415 int grow_size = 1024; |
|
|
416 int max_size = grow_size; |
|
|
417 |
|
|
418 char *buf = (char *) malloc (max_size); |
|
|
419 char *bufptr = buf; |
|
|
420 |
|
|
421 do |
|
|
422 { |
|
|
423 if (fgets (bufptr, grow_size, curr_stream)) |
|
|
424 { |
|
|
425 int len = strlen (bufptr); |
|
|
426 |
|
|
427 if (len == grow_size - 1) |
|
|
428 { |
|
|
429 int tmp = bufptr - buf + grow_size - 1; |
|
|
430 grow_size *= 2; |
|
|
431 max_size += grow_size; |
|
|
432 buf = (char *) realloc (buf, max_size); |
|
|
433 bufptr = buf + tmp; |
|
|
434 |
|
|
435 if (*(bufptr-1) == '\n') |
|
|
436 { |
|
|
437 *bufptr = '\0'; |
|
|
438 retval = buf; |
|
|
439 } |
|
|
440 } |
|
|
441 else if (bufptr[len-1] != '\n') |
|
|
442 { |
|
|
443 bufptr[len++] = '\n'; |
|
|
444 bufptr[len] = '\0'; |
|
|
445 retval = buf; |
|
|
446 } |
|
|
447 else |
|
|
448 retval = buf; |
|
|
449 } |
|
|
450 else |
|
|
451 break; |
|
|
452 } |
|
|
453 while (! retval); |
|
|
454 } |
|
|
455 |
|
|
456 return retval; |
|
|
457 } |
|
581
|
458 |
|
287
|
459 static char * |
|
1
|
460 octave_gets (void) |
|
|
461 { |
|
1822
|
462 char *retval = 0; |
|
1
|
463 |
|
1822
|
464 if ((interactive || forced_interactive) |
|
|
465 && (! (reading_fcn_file || reading_script_file))) |
|
1
|
466 { |
|
1755
|
467 const char *ps = (promptflag > 0) ? user_pref.ps1.c_str () : |
|
|
468 user_pref.ps2.c_str (); |
|
|
469 |
|
1761
|
470 string prompt = decode_prompt_string (ps); |
|
1
|
471 |
|
|
472 if (interactive) |
|
|
473 { |
|
|
474 pipe_handler_error_count = 0; |
|
|
475 flush_output_to_pager (); |
|
|
476 } |
|
|
477 |
|
581
|
478 maybe_write_to_diary_file (prompt); |
|
|
479 |
|
1822
|
480 retval = gnu_readline (prompt.c_str ()); |
|
1
|
481 } |
|
|
482 else |
|
1822
|
483 retval = gnu_readline (""); |
|
1
|
484 |
|
1822
|
485 if (retval) |
|
|
486 current_input_line = retval; |
|
|
487 else |
|
|
488 current_input_line = ""; |
|
1
|
489 |
|
1822
|
490 if (! current_input_line.empty ()) |
|
1
|
491 { |
|
1799
|
492 if (! input_from_startup_file) |
|
1822
|
493 octave_command_history.add (current_input_line); |
|
1
|
494 |
|
1822
|
495 maybe_write_to_diary_file (current_input_line); |
|
581
|
496 |
|
1822
|
497 do_input_echo (current_input_line); |
|
1
|
498 } |
|
581
|
499 |
|
|
500 maybe_write_to_diary_file ("\n"); |
|
|
501 |
|
1822
|
502 return retval; |
|
1
|
503 } |
|
|
504 |
|
581
|
505 // Read a line from the input stream. |
|
|
506 |
|
1822
|
507 static char * |
|
|
508 get_user_input (void) |
|
1
|
509 { |
|
1822
|
510 char *retval = 0; |
|
1
|
511 |
|
|
512 if (get_input_from_eval_string) |
|
|
513 { |
|
1755
|
514 size_t len = current_eval_string.length (); |
|
|
515 |
|
1822
|
516 retval = (char *) malloc (len + 2); |
|
|
517 |
|
|
518 strcpy (retval, current_eval_string.c_str ()); |
|
|
519 |
|
|
520 retval[len++] = '\n'; |
|
|
521 retval[len] = '\0'; // Paranoia. |
|
|
522 } |
|
|
523 else |
|
|
524 retval = octave_gets (); |
|
|
525 |
|
|
526 if (retval) |
|
|
527 current_input_line = retval; |
|
|
528 |
|
|
529 input_line_number++; |
|
|
530 |
|
|
531 return retval; |
|
|
532 } |
|
|
533 |
|
|
534 int |
|
|
535 octave_read (char *buf, unsigned max_size) |
|
|
536 { |
|
|
537 static char *input_buf = 0; |
|
|
538 static char *cur_pos = 0; |
|
|
539 static int chars_left = 0; |
|
|
540 |
|
|
541 int status = 0; |
|
|
542 |
|
|
543 if (! input_buf) |
|
|
544 { |
|
|
545 cur_pos = input_buf = get_user_input (); |
|
|
546 |
|
|
547 chars_left = input_buf ? strlen (input_buf) : 0; |
|
|
548 } |
|
|
549 |
|
|
550 if (chars_left > 0) |
|
|
551 { |
|
|
552 buf[0] = '\0'; |
|
|
553 |
|
|
554 int len = max_size - 2; |
|
|
555 |
|
|
556 strncpy (buf, cur_pos, len); |
|
|
557 |
|
|
558 if (chars_left > len) |
|
1
|
559 { |
|
1822
|
560 chars_left -= len; |
|
|
561 |
|
|
562 cur_pos += len; |
|
|
563 |
|
|
564 buf[len] = '\0'; |
|
|
565 |
|
1
|
566 status = len; |
|
|
567 } |
|
|
568 else |
|
|
569 { |
|
1822
|
570 free (input_buf); |
|
|
571 input_buf = 0; |
|
1755
|
572 |
|
1822
|
573 len = chars_left; |
|
|
574 |
|
|
575 if (buf[len-1] != '\n') |
|
|
576 buf[len++] = '\n'; |
|
1
|
577 |
|
1822
|
578 buf[len] = '\0'; |
|
1755
|
579 |
|
1822
|
580 status = len; |
|
1
|
581 } |
|
1044
|
582 } |
|
1822
|
583 else if (chars_left == 0) |
|
|
584 status = 0; |
|
|
585 else |
|
|
586 status = -1; |
|
1044
|
587 |
|
1
|
588 return status; |
|
|
589 } |
|
|
590 |
|
581
|
591 // Fix things up so that input can come from file `name', printing a |
|
|
592 // warning if the file doesn't exist. |
|
|
593 |
|
1
|
594 FILE * |
|
1750
|
595 get_input_from_file (const string& name, int warn) |
|
1
|
596 { |
|
529
|
597 FILE *instream = 0; |
|
1
|
598 |
|
1750
|
599 if (name.length () > 0) |
|
|
600 instream = fopen (name.c_str (), "r"); |
|
1
|
601 |
|
529
|
602 if (! instream && warn) |
|
1750
|
603 warning ("%s: no such file or directory", name.c_str ()); |
|
1
|
604 |
|
338
|
605 if (reading_fcn_file || reading_script_file) |
|
339
|
606 ff_instream = instream; |
|
1
|
607 else |
|
|
608 rl_instream = instream; |
|
|
609 |
|
|
610 return instream; |
|
|
611 } |
|
|
612 |
|
581
|
613 // Fix things up so that input can come from the standard input. This |
|
|
614 // may need to become much more complicated, which is why it's in a |
|
|
615 // separate function. |
|
|
616 |
|
1
|
617 FILE * |
|
|
618 get_input_from_stdin (void) |
|
|
619 { |
|
|
620 rl_instream = stdin; |
|
|
621 return rl_instream; |
|
|
622 } |
|
|
623 |
|
1755
|
624 static const char ** |
|
1280
|
625 generate_struct_completions (const char *text, char *& prefix, |
|
|
626 char *& hint) |
|
|
627 { |
|
1755
|
628 const char **names = 0; |
|
1280
|
629 |
|
1288
|
630 assert (text); |
|
|
631 |
|
1280
|
632 char *id = strsave (text); |
|
|
633 char *ptr = strchr (id, '.'); |
|
|
634 *ptr = '\0'; |
|
|
635 |
|
|
636 char *elts = ptr + 1; |
|
|
637 ptr = strrchr (elts, '.'); |
|
|
638 if (ptr) |
|
|
639 *ptr = '\0'; |
|
|
640 else |
|
|
641 elts = 0; |
|
|
642 |
|
|
643 prefix = strsave (text); |
|
|
644 ptr = strrchr (prefix, '.'); |
|
|
645 *ptr = '\0'; |
|
|
646 |
|
1288
|
647 delete [] hint; |
|
1280
|
648 hint = strsave (ptr + 1); |
|
|
649 |
|
|
650 symbol_record *sr = curr_sym_tab->lookup (id, 0, 0); |
|
|
651 if (! sr) |
|
|
652 sr = global_sym_tab->lookup (id, 0, 0); |
|
|
653 |
|
|
654 if (sr && sr->is_defined ()) |
|
|
655 { |
|
|
656 tree_fvc *tmp_fvc = sr->def (); |
|
|
657 |
|
|
658 tree_constant *def = 0; |
|
|
659 if (tmp_fvc->is_constant ()) |
|
|
660 def = (tree_constant *) tmp_fvc; |
|
|
661 |
|
|
662 if (def && def->is_map ()) |
|
|
663 { |
|
1755
|
664 string_vector tmp_names; |
|
|
665 |
|
1280
|
666 if (elts && *elts) |
|
|
667 { |
|
|
668 tree_constant ult = def->lookup_map_element (elts, 0, 1); |
|
|
669 |
|
|
670 if (ult.is_map ()) |
|
|
671 { |
|
|
672 Octave_map m = ult.map_value (); |
|
1755
|
673 tmp_names = m.make_name_list (); |
|
1280
|
674 } |
|
|
675 } |
|
|
676 else |
|
|
677 { |
|
|
678 Octave_map m = def->map_value (); |
|
1755
|
679 tmp_names = m.make_name_list (); |
|
|
680 } |
|
|
681 |
|
|
682 int n = tmp_names.length (); |
|
|
683 |
|
|
684 if (n > 0) |
|
|
685 { |
|
|
686 names = new const char * [n+1]; |
|
|
687 for (int i = 0; i < n; i++) |
|
|
688 names[i] = strsave (tmp_names[i].c_str ()); |
|
|
689 names[n] = 0; |
|
1280
|
690 } |
|
|
691 } |
|
|
692 } |
|
|
693 |
|
|
694 delete [] id; |
|
|
695 |
|
|
696 return names; |
|
|
697 } |
|
|
698 |
|
1430
|
699 // XXX FIXME XXX -- make this generate file names when appropriate. |
|
|
700 |
|
1755
|
701 static const char ** |
|
1280
|
702 generate_possible_completions (const char *text, char *& prefix, |
|
|
703 char *& hint) |
|
1
|
704 { |
|
1755
|
705 const char **names = 0; |
|
1280
|
706 |
|
|
707 prefix = 0; |
|
|
708 |
|
1430
|
709 if (text && *text && *text != '.' && strrchr (text, '.')) |
|
|
710 names = generate_struct_completions (text, prefix, hint); |
|
|
711 else |
|
1755
|
712 { |
|
|
713 string_vector tmp_names = make_name_list (); |
|
|
714 |
|
|
715 int n = tmp_names.length (); |
|
|
716 |
|
|
717 if (n > 0) |
|
|
718 { |
|
|
719 names = new const char * [n+1]; |
|
|
720 for (int i = 0; i < n; i++) |
|
|
721 names[i] = strsave (tmp_names[i].c_str ()); |
|
|
722 names[n] = 0; |
|
|
723 } |
|
|
724 } |
|
1280
|
725 |
|
|
726 return names; |
|
|
727 } |
|
|
728 |
|
|
729 static int |
|
|
730 looks_like_struct (const char *nm) |
|
|
731 { |
|
|
732 int retval = 0; |
|
|
733 |
|
1288
|
734 assert (nm); |
|
|
735 |
|
1280
|
736 char *id = strsave (nm); |
|
|
737 char *elts = 0; |
|
|
738 char *ptr = strchr (id, '.'); |
|
|
739 if (ptr) |
|
|
740 { |
|
|
741 *ptr = '\0'; |
|
|
742 elts = ptr + 1; |
|
|
743 } |
|
|
744 |
|
|
745 symbol_record *sr = curr_sym_tab->lookup (id, 0, 0); |
|
|
746 if (! sr) |
|
|
747 sr = global_sym_tab->lookup (id, 0, 0); |
|
|
748 |
|
|
749 if (sr && sr->is_defined ()) |
|
|
750 { |
|
|
751 tree_fvc *tmp_fvc = sr->def (); |
|
|
752 |
|
|
753 tree_constant *def = 0; |
|
|
754 if (tmp_fvc->is_constant ()) |
|
|
755 def = (tree_constant *) tmp_fvc; |
|
|
756 |
|
|
757 if (def && def->is_map ()) |
|
|
758 { |
|
|
759 if (elts && *elts) |
|
|
760 { |
|
|
761 tree_constant ult = def->lookup_map_element (elts, 0, 1); |
|
|
762 |
|
|
763 if (ult.is_map ()) |
|
|
764 retval = 1; |
|
|
765 } |
|
|
766 else |
|
|
767 retval = 1; |
|
|
768 } |
|
|
769 } |
|
|
770 |
|
|
771 delete [] id; |
|
|
772 |
|
|
773 return retval; |
|
|
774 } |
|
|
775 |
|
|
776 static char * |
|
|
777 command_generator (const char *text, int state) |
|
|
778 { |
|
|
779 static char *prefix = 0; |
|
|
780 static char *hint = 0; |
|
|
781 |
|
|
782 static int prefix_len = 0; |
|
|
783 static int hint_len = 0; |
|
|
784 |
|
1
|
785 static int list_index = 0; |
|
1755
|
786 static const char **name_list = 0; |
|
1
|
787 |
|
1280
|
788 static int matches = 0; |
|
1
|
789 |
|
|
790 if (state == 0) |
|
|
791 { |
|
|
792 list_index = 0; |
|
|
793 |
|
529
|
794 if (name_list) |
|
244
|
795 { |
|
1755
|
796 const char **ptr = name_list; |
|
|
797 |
|
244
|
798 while (ptr && *ptr) |
|
|
799 delete [] *ptr++; |
|
1280
|
800 |
|
244
|
801 delete [] name_list; |
|
1280
|
802 |
|
|
803 name_list = 0; |
|
244
|
804 } |
|
1
|
805 |
|
1280
|
806 delete [] prefix; |
|
|
807 prefix = 0; |
|
|
808 |
|
|
809 delete [] hint; |
|
1288
|
810 hint = strsave (text); |
|
1280
|
811 |
|
|
812 name_list = generate_possible_completions (text, prefix, hint); |
|
|
813 |
|
|
814 prefix_len = 0; |
|
|
815 if (prefix) |
|
1288
|
816 prefix_len = strlen (prefix); |
|
1280
|
817 |
|
1288
|
818 assert (hint); |
|
|
819 hint_len = strlen (hint); |
|
1280
|
820 |
|
|
821 matches = 0; |
|
|
822 if (name_list) |
|
|
823 { |
|
|
824 int i = 0; |
|
|
825 while (name_list[i]) |
|
|
826 if (strncmp (name_list[i++], hint, hint_len) == 0) |
|
|
827 matches++; |
|
|
828 } |
|
1
|
829 } |
|
|
830 |
|
1280
|
831 if (name_list && matches) |
|
1
|
832 { |
|
1755
|
833 const char *name; |
|
|
834 |
|
1280
|
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 |
|
1761
|
1012 string prompt ("debug> "); |
|
|
1013 |
|
712
|
1014 if (nargin > 0) |
|
529
|
1015 { |
|
1761
|
1016 prompt = args(0).string_value (); |
|
636
|
1017 |
|
|
1018 if (error_state) |
|
|
1019 { |
|
|
1020 error ("input: unrecognized argument"); |
|
|
1021 return retval; |
|
|
1022 } |
|
529
|
1023 } |
|
|
1024 |
|
|
1025 again: |
|
|
1026 |
|
|
1027 flush_output_to_pager (); |
|
|
1028 |
|
1761
|
1029 char *input_buf = gnu_readline (prompt.c_str ()); |
|
529
|
1030 |
|
|
1031 if (input_buf) |
|
|
1032 { |
|
1799
|
1033 if (! input_from_startup_file) |
|
|
1034 octave_command_history.add (input_buf); |
|
529
|
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 |
|
1755
|
1131 int argc = args.length () + 1; |
|
|
1132 |
|
|
1133 string_vector argv = make_argv (args, "echo"); |
|
|
1134 |
|
|
1135 if (error_state) |
|
|
1136 return retval; |
|
1588
|
1137 |
|
|
1138 switch (argc) |
|
|
1139 { |
|
|
1140 case 1: |
|
|
1141 { |
|
|
1142 int echo_cmds = user_pref.echo_executing_commands; |
|
|
1143 if ((echo_cmds & ECHO_SCRIPTS) || (echo_cmds & ECHO_FUNCTIONS)) |
|
|
1144 bind_builtin_variable ("echo_executing_commands", ECHO_OFF); |
|
|
1145 else |
|
|
1146 bind_builtin_variable ("echo_executing_commands", ECHO_SCRIPTS); |
|
|
1147 } |
|
|
1148 break; |
|
|
1149 |
|
|
1150 case 2: |
|
|
1151 { |
|
1755
|
1152 string arg = argv[1]; |
|
|
1153 |
|
|
1154 if (arg == "on") |
|
1588
|
1155 bind_builtin_variable ("echo_executing_commands", ECHO_SCRIPTS); |
|
1755
|
1156 else if (arg == "off") |
|
1588
|
1157 bind_builtin_variable ("echo_executing_commands", ECHO_OFF); |
|
|
1158 else |
|
|
1159 print_usage ("echo"); |
|
|
1160 } |
|
|
1161 break; |
|
|
1162 |
|
|
1163 case 3: |
|
|
1164 { |
|
1755
|
1165 string arg = argv[1]; |
|
|
1166 |
|
|
1167 if (arg == "on" && argv[2] == "all") |
|
1588
|
1168 bind_builtin_variable ("echo_executing_commands", |
|
|
1169 (ECHO_SCRIPTS | ECHO_FUNCTIONS)); |
|
1755
|
1170 else if (arg == "off" && argv[2] == "all") |
|
1588
|
1171 bind_builtin_variable ("echo_executing_commands", ECHO_OFF); |
|
|
1172 else |
|
|
1173 print_usage ("echo"); |
|
|
1174 } |
|
|
1175 break; |
|
|
1176 |
|
|
1177 default: |
|
|
1178 print_usage ("echo"); |
|
|
1179 break; |
|
|
1180 } |
|
|
1181 |
|
|
1182 return retval; |
|
|
1183 } |
|
|
1184 |
|
1
|
1185 /* |
|
|
1186 ;;; Local Variables: *** |
|
|
1187 ;;; mode: C++ *** |
|
|
1188 ;;; page-delimiter: "^/\\*" *** |
|
|
1189 ;;; End: *** |
|
|
1190 */ |
