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1
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1 // input.cc -*- C++ -*- |
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2 /* |
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3 |
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1009
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4 Copyright (C) 1992, 1993, 1994, 1995 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 2, or (at your option) any |
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11 later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, write to the Free |
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1315
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20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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21 |
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22 */ |
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23 |
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661
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24 /* |
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25 |
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26 The 3 functions listed below were adapted from similar functions |
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27 from GNU Bash, the Bourne Again SHell, copyright (C) 1987, 1989, 1991 |
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28 Free Software Foundation, Inc. |
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29 |
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30 read_octal sub_append_string decode_prompt_string |
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31 |
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32 */ |
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33 |
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1
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34 // Use the GNU readline library for command line editing and hisory. |
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35 |
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240
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36 #ifdef HAVE_CONFIG_H |
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1192
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37 #include <config.h> |
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1
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38 #endif |
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39 |
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1343
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40 #include <ctime> |
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41 #include <cstdio> |
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42 #include <cstdlib> |
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43 #include <cstring> |
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44 #include <cassert> |
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45 #include <csignal> |
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46 |
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1349
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47 #include <iostream.h> |
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48 #include <strstream.h> |
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49 |
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1350
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50 #ifdef HAVE_UNISTD_H |
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529
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51 #include <sys/types.h> |
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52 #include <unistd.h> |
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53 #endif |
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1343
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54 |
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1
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55 // This must come before anything that includes iostream.h... |
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1350
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56 // (This is apparently no longer true...) |
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1466
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57 |
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1
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58 #include "readline/readline.h" |
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269
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59 #include "readline/history.h" |
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1
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60 |
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581
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61 // Yes, this sucks, but it avoids a conflict with another readline |
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62 // function declared in iostream.h. |
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1350
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63 // (Apparently, there isn't one there now...) |
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581
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64 |
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1
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65 #if 0 |
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66 #define LINE_SIZE 8192 |
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529
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67 static int no_line_editing = 0; |
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1
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68 #endif |
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69 |
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70 char * |
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1363
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71 gnu_readline (const char *s) |
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1
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72 { |
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73 #if 0 |
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74 static int state = 0; |
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529
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75 static char *line_from_stdin = 0; |
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1
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76 if (no_line_editing) |
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77 { |
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78 if (! state) |
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79 { |
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80 line_from_stdin = (char *) malloc (LINE_SIZE); |
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81 state = 1; |
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82 } |
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83 fputs ("octave> ", stdout); |
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84 fgets (line_from_stdin, LINE_SIZE, stdin); |
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85 return line_from_stdin; |
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86 } |
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87 else |
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88 #endif |
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89 return readline (s); |
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90 } |
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91 |
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1352
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92 #include "defun.h" |
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93 #include "dirfns.h" |
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1
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94 #include "error.h" |
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1352
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95 #include "help.h" |
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1
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96 #include "input.h" |
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1352
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97 #include "oct-map.h" |
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98 #include "oct-obj.h" |
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99 #include "octave-hist.h" |
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100 #include "octave.h" |
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1
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101 #include "pager.h" |
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529
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102 #include "parse.h" |
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1352
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103 #include "pathlen.h" |
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104 #include "sighandlers.h" |
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105 #include "symtab.h" |
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1114
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106 #include "sysdep.h" |
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529
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107 #include "tree-const.h" |
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1
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108 #include "user-prefs.h" |
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1352
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109 #include "utils.h" |
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110 #include "variables.h" |
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529
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111 |
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112 // The size that strings change by. |
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113 #ifndef DEFAULT_ARRAY_SIZE |
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114 #define DEFAULT_ARRAY_SIZE 512 |
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115 #endif |
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116 |
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117 // The growth rate for the prompt string. |
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118 #ifndef PROMPT_GROWTH |
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119 #define PROMPT_GROWTH 50 |
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120 #endif |
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1
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121 |
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122 // Global pointer for eval(). |
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529
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123 const char *current_eval_string = 0; |
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1
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124 |
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125 // Nonzero means get input from current_eval_string. |
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126 int get_input_from_eval_string = 0; |
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127 |
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338
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128 // Nonzero means we're parsing a function file. |
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129 int reading_fcn_file = 0; |
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1
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130 |
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338
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131 // Simple name of function file we are reading. |
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529
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132 char *curr_fcn_file_name = 0; |
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1
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133 |
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134 // Nonzero means we're parsing a script file. |
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135 int reading_script_file = 0; |
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136 |
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137 // If we are reading from an M-file, this is it. |
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529
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138 FILE *ff_instream = 0; |
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1
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139 |
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140 // Nonzero means we are using readline. |
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141 int using_readline = 1; |
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142 |
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616
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143 // Nonzero means commands are echoed as they are executed. |
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144 // (--echo-commands; -x). |
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1
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145 int echo_input = 0; |
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146 |
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147 // Nonzero means this is an interactive shell. |
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148 int interactive = 0; |
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149 |
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150 // Nonzero means the user forced this shell to be interactive (-i). |
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151 int forced_interactive = 0; |
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152 |
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153 // Should we issue a prompt? |
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154 int promptflag = 1; |
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155 |
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156 // The current line of input, from wherever. |
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529
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157 char *current_input_line = 0; |
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1
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158 |
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159 // A line of input from readline. |
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529
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160 static char *octave_gets_line = 0; |
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161 |
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581
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162 // Append SOURCE to TARGET at INDEX. SIZE is the current amount of |
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163 // space allocated to TARGET. SOURCE can be NULL, in which case |
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164 // nothing happens. Gets rid of SOURCE by free ()ing it. Returns |
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165 // TARGET in case the location has changed. |
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166 |
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529
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167 static char * |
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168 sub_append_string (char *source, char *target, int *index, int *size) |
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169 { |
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170 if (source) |
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171 { |
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172 while ((int)strlen (source) >= (int)(*size - *index)) |
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173 { |
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174 char *tmp = new char [*size += DEFAULT_ARRAY_SIZE]; |
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175 strcpy (tmp, target); |
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176 delete [] target; |
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177 target = tmp; |
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178 } |
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179 |
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180 strcat (target, source); |
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181 *index += strlen (source); |
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182 |
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183 delete [] source; |
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184 } |
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185 return target; |
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186 } |
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187 |
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581
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188 // Return the octal number parsed from STRING, or -1 to indicate that |
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189 // the string contained a bad number. |
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190 |
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529
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191 int |
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192 read_octal (const char *string) |
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193 { |
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194 int result = 0; |
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195 int digits = 0; |
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196 |
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197 while (*string && *string >= '0' && *string < '8') |
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198 { |
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199 digits++; |
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200 result = (result * 8) + *string++ - '0'; |
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201 } |
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202 |
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203 if (! digits || result > 0777 || *string) |
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204 result = -1; |
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205 |
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206 return result; |
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207 } |
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208 |
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581
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209 // Return a string which will be printed as a prompt. The string may |
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210 // contain special characters which are decoded as follows: |
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211 // |
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212 // \t the time |
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213 // \d the date |
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214 // \n CRLF |
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215 // \s the name of the shell (program) |
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216 // \w the current working directory |
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217 // \W the last element of PWD |
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218 // \u your username |
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219 // \h the hostname |
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220 // \# the command number of this command |
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221 // \! the history number of this command |
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222 // \$ a $ or a # if you are root |
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223 // \<octal> character code in octal |
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224 // \\ a backslash |
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225 |
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529
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226 static char * |
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227 decode_prompt_string (const char *string) |
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228 { |
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229 int result_size = PROMPT_GROWTH; |
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230 int result_index = 0; |
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231 char *result = new char [PROMPT_GROWTH]; |
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232 int c; |
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233 char *temp = 0; |
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234 |
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235 result[0] = 0; |
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1215
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236 while ((c = *string++)) |
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529
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237 { |
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238 if (c == '\\') |
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239 { |
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240 c = *string; |
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241 |
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242 switch (c) |
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243 { |
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244 case '0': |
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245 case '1': |
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246 case '2': |
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247 case '3': |
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248 case '4': |
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249 case '5': |
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250 case '6': |
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251 case '7': |
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252 { |
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253 char octal_string[4]; |
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254 int n; |
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255 |
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256 strncpy (octal_string, string, 3); |
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257 octal_string[3] = '\0'; |
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258 |
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259 n = read_octal (octal_string); |
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260 |
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261 temp = strsave ("\\"); |
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262 if (n != -1) |
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263 { |
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264 string += 3; |
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265 temp[0] = n; |
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266 } |
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267 |
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268 c = 0; |
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269 goto add_string; |
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270 } |
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271 |
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272 case 't': |
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273 case 'd': |
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274 /* Make the current time/date into a string. */ |
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275 { |
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276 time_t the_time = time (0); |
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277 char *ttemp = ctime (&the_time); |
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278 temp = strsave (ttemp); |
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279 |
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280 if (c == 't') |
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281 { |
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282 strcpy (temp, temp + 11); |
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283 temp[8] = '\0'; |
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284 } |
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285 else |
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286 temp[10] = '\0'; |
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287 |
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288 goto add_string; |
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289 } |
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1
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290 |
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529
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291 case 'n': |
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292 if (! no_line_editing) |
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293 temp = strsave ("\r\n"); |
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294 else |
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295 temp = strsave ("\n"); |
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296 goto add_string; |
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297 |
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298 case 's': |
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299 { |
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300 temp = base_pathname (prog_name); |
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301 temp = strsave (temp); |
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302 goto add_string; |
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303 } |
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304 |
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305 case 'w': |
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306 case 'W': |
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307 { |
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308 char t_string[MAXPATHLEN]; |
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309 #define EFFICIENT |
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310 #ifdef EFFICIENT |
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311 |
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1358
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312 // Use the value of PWD because it is much more |
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313 // effecient. |
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529
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314 |
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315 temp = user_pref.pwd; |
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316 |
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317 if (! temp) |
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1112
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318 octave_getcwd (t_string, MAXPATHLEN); |
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529
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319 else |
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320 strcpy (t_string, temp); |
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321 #else |
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1112
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322 octave_getcwd (t_string, MAXPATHLEN); |
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529
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323 #endif /* EFFICIENT */ |
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324 |
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325 if (c == 'W') |
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326 { |
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327 char *dir = strrchr (t_string, '/'); |
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328 if (dir && dir != t_string) |
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329 strcpy (t_string, dir + 1); |
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330 temp = strsave (t_string); |
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331 } |
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332 else |
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333 temp = strsave (polite_directory_format (t_string)); |
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334 goto add_string; |
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335 } |
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336 |
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337 case 'u': |
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338 { |
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339 temp = strsave (user_name); |
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340 |
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341 goto add_string; |
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342 } |
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343 |
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344 case 'h': |
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345 { |
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346 char *t_string; |
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347 |
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348 temp = strsave (host_name); |
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1215
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349 t_string = strchr (temp, '.'); |
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350 if (t_string); |
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529
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351 *t_string = '\0'; |
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352 |
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353 goto add_string; |
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354 } |
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355 |
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356 case '#': |
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357 { |
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358 char number_buffer[128]; |
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359 sprintf (number_buffer, "%d", current_command_number); |
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360 temp = strsave (number_buffer); |
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361 goto add_string; |
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362 } |
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363 |
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364 case '!': |
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365 { |
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366 char number_buffer[128]; |
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367 int num = current_history_number (); |
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368 if (num > 0) |
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369 sprintf (number_buffer, "%d", num); |
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370 else |
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371 strcpy (number_buffer, "!"); |
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372 temp = strsave (number_buffer); |
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373 goto add_string; |
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374 } |
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375 |
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376 case '$': |
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377 temp = strsave (geteuid () == 0 ? "#" : "$"); |
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378 goto add_string; |
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379 |
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1568
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380 case '[': |
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381 case ']': |
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382 temp = new char[3]; |
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383 temp[0] = '\001'; |
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384 temp[1] = ((c == '[') |
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385 ? RL_PROMPT_START_IGNORE |
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386 : RL_PROMPT_END_IGNORE); |
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387 temp[2] = '\0'; |
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388 goto add_string; |
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389 |
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529
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390 case '\\': |
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391 temp = strsave ("\\"); |
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392 goto add_string; |
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393 |
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394 default: |
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395 temp = strsave ("\\ "); |
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396 temp[1] = c; |
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397 |
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398 add_string: |
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399 if (c) |
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400 string++; |
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401 result = |
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402 (char *)sub_append_string (temp, result, |
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403 &result_index, &result_size); |
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581
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404 temp = 0; // Free ()'ed in sub_append_string (). |
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529
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405 result[result_index] = '\0'; |
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406 break; |
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407 } |
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408 } |
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409 else |
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410 { |
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411 while (3 + result_index > result_size) |
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412 { |
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413 char *tmp = new char [result_size += PROMPT_GROWTH]; |
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414 strcpy (tmp, result); |
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415 delete [] result; |
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416 result = tmp; |
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417 } |
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418 result[result_index++] = c; |
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419 result[result_index] = '\0'; |
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420 } |
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421 } |
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422 |
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423 #if 0 |
|
1358
|
424 // I don't really think that this is a good idea. Do you? |
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425 |
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529
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426 if (! find_variable ("NO_PROMPT_VARS")) |
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427 { |
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428 WORD_LIST *expand_string (), *list; |
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429 char *string_list (); |
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430 |
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431 list = expand_string (result, 1); |
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432 free (result); |
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433 result = string_list (list); |
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434 dispose_words (list); |
|
|
435 } |
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436 #endif |
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437 |
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438 return result; |
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439 } |
|
581
|
440 |
|
1044
|
441 static void |
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|
442 do_input_echo (const char *input_string) |
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443 { |
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444 if (echo_input) |
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445 { |
|
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446 ostrstream buf; |
|
|
447 |
|
1403
|
448 if (forced_interactive) |
|
|
449 { |
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450 char *ps = (promptflag > 0) ? user_pref.ps1 : user_pref.ps2; |
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451 char *prefix = decode_prompt_string (ps); |
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452 buf << prefix; |
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453 delete [] prefix; |
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454 } |
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455 else |
|
1044
|
456 { |
|
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457 char *prefix = decode_prompt_string (user_pref.ps4); |
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458 buf << prefix; |
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|
459 delete [] prefix; |
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460 } |
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461 |
|
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462 if (input_string) |
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463 { |
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464 buf << input_string; |
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465 int len = strlen (input_string); |
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466 if (input_string[len-1] != '\n') |
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467 buf << "\n"; |
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468 } |
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469 |
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470 maybe_page_output (buf); |
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471 } |
|
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472 } |
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473 |
|
581
|
474 // Use GNU readline to get an input line and store it in the history |
|
|
475 // list. |
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|
476 |
|
287
|
477 static char * |
|
1
|
478 octave_gets (void) |
|
|
479 { |
|
529
|
480 if (octave_gets_line) |
|
126
|
481 { |
|
|
482 free (octave_gets_line); |
|
529
|
483 octave_gets_line = 0; |
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126
|
484 } |
|
1
|
485 |
|
|
486 if (interactive || forced_interactive) |
|
|
487 { |
|
|
488 char *ps = (promptflag > 0) ? user_pref.ps1 : user_pref.ps2; |
|
|
489 char *prompt = decode_prompt_string (ps); |
|
|
490 |
|
|
491 if (interactive) |
|
|
492 { |
|
|
493 pipe_handler_error_count = 0; |
|
|
494 flush_output_to_pager (); |
|
|
495 } |
|
|
496 |
|
581
|
497 maybe_write_to_diary_file (prompt); |
|
|
498 |
|
1
|
499 octave_gets_line = gnu_readline (prompt); |
|
581
|
500 |
|
1
|
501 delete [] prompt; |
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|
502 } |
|
|
503 else |
|
|
504 octave_gets_line = gnu_readline (""); |
|
|
505 |
|
|
506 current_input_line = octave_gets_line; |
|
|
507 |
|
|
508 if (octave_gets_line && *octave_gets_line) |
|
|
509 { |
|
|
510 maybe_save_history (octave_gets_line); |
|
|
511 |
|
581
|
512 maybe_write_to_diary_file (octave_gets_line); |
|
|
513 |
|
1044
|
514 do_input_echo (octave_gets_line); |
|
1
|
515 } |
|
581
|
516 |
|
|
517 maybe_write_to_diary_file ("\n"); |
|
|
518 |
|
1
|
519 return octave_gets_line; |
|
|
520 } |
|
|
521 |
|
581
|
522 // Read a line from the input stream. |
|
|
523 |
|
269
|
524 int |
|
1
|
525 octave_read (char *buf, int max_size) |
|
|
526 { |
|
|
527 int status = 0; |
|
|
528 |
|
529
|
529 static char *stashed_line = 0; |
|
1
|
530 |
|
|
531 if (get_input_from_eval_string) |
|
|
532 { |
|
|
533 int len = strlen (current_eval_string); |
|
|
534 if (len < max_size - 1) |
|
|
535 { |
|
|
536 strcpy (buf, current_eval_string); |
|
|
537 buf[len++] = '\n'; |
|
|
538 buf[len] = '\0'; // Paranoia. |
|
|
539 status = len; |
|
|
540 } |
|
|
541 else |
|
|
542 status = -1; |
|
|
543 |
|
|
544 if (stashed_line) |
|
|
545 delete [] stashed_line; |
|
|
546 |
|
|
547 stashed_line = strsave (buf); |
|
|
548 current_input_line = stashed_line; |
|
|
549 } |
|
|
550 else if (using_readline) |
|
|
551 { |
|
|
552 char *cp = octave_gets (); |
|
529
|
553 if (cp) |
|
1
|
554 { |
|
|
555 int len = strlen (cp); |
|
|
556 if (len >= max_size) |
|
|
557 status = -1; |
|
|
558 else |
|
|
559 { |
|
|
560 strcpy (buf, cp); |
|
|
561 buf[len++] = '\n'; |
|
|
562 buf[len] = '\0'; // Paranoia. |
|
|
563 status = len; |
|
|
564 } |
|
|
565 } |
|
|
566 current_input_line = cp; |
|
|
567 } |
|
|
568 else |
|
|
569 { |
|
|
570 FILE *curr_stream = rl_instream; |
|
338
|
571 if (reading_fcn_file || reading_script_file) |
|
339
|
572 curr_stream = ff_instream; |
|
1
|
573 |
|
529
|
574 assert (curr_stream); |
|
1
|
575 |
|
1358
|
576 // Why is this required? |
|
1
|
577 buf[0] = '\0'; |
|
|
578 |
|
529
|
579 if (fgets (buf, max_size, curr_stream)) |
|
1
|
580 { |
|
|
581 int len = strlen (buf); |
|
|
582 if (len > max_size - 2) |
|
|
583 status = -1; |
|
|
584 else |
|
|
585 { |
|
|
586 if (buf[len-1] != '\n') |
|
|
587 { |
|
|
588 buf[len++] = '\n'; |
|
|
589 buf[len] = '\0'; |
|
|
590 } |
|
|
591 status = len; |
|
|
592 } |
|
|
593 } |
|
|
594 else |
|
|
595 status = 0; // Tell yylex that we found EOF. |
|
|
596 |
|
|
597 if (stashed_line) |
|
|
598 delete [] stashed_line; |
|
|
599 |
|
|
600 stashed_line = strsave (buf); |
|
1044
|
601 |
|
1
|
602 current_input_line = stashed_line; |
|
287
|
603 |
|
1044
|
604 do_input_echo (current_input_line); |
|
|
605 } |
|
287
|
606 |
|
1
|
607 input_line_number++; |
|
1044
|
608 |
|
1
|
609 return status; |
|
|
610 } |
|
|
611 |
|
581
|
612 // Fix things up so that input can come from file `name', printing a |
|
|
613 // warning if the file doesn't exist. |
|
|
614 |
|
1
|
615 FILE * |
|
529
|
616 get_input_from_file (char *name, int warn) |
|
1
|
617 { |
|
529
|
618 FILE *instream = 0; |
|
1
|
619 |
|
|
620 if (name && *name) |
|
|
621 instream = fopen (name, "r"); |
|
|
622 |
|
529
|
623 if (! instream && warn) |
|
217
|
624 warning ("%s: no such file or directory", name); |
|
1
|
625 |
|
338
|
626 if (reading_fcn_file || reading_script_file) |
|
339
|
627 ff_instream = instream; |
|
1
|
628 else |
|
|
629 rl_instream = instream; |
|
|
630 |
|
|
631 return instream; |
|
|
632 } |
|
|
633 |
|
581
|
634 // Fix things up so that input can come from the standard input. This |
|
|
635 // may need to become much more complicated, which is why it's in a |
|
|
636 // separate function. |
|
|
637 |
|
1
|
638 FILE * |
|
|
639 get_input_from_stdin (void) |
|
|
640 { |
|
|
641 rl_instream = stdin; |
|
|
642 return rl_instream; |
|
|
643 } |
|
|
644 |
|
1280
|
645 static char ** |
|
|
646 generate_struct_completions (const char *text, char *& prefix, |
|
|
647 char *& hint) |
|
|
648 { |
|
|
649 char **names = 0; |
|
|
650 |
|
1288
|
651 assert (text); |
|
|
652 |
|
1280
|
653 char *id = strsave (text); |
|
|
654 char *ptr = strchr (id, '.'); |
|
|
655 *ptr = '\0'; |
|
|
656 |
|
|
657 char *elts = ptr + 1; |
|
|
658 ptr = strrchr (elts, '.'); |
|
|
659 if (ptr) |
|
|
660 *ptr = '\0'; |
|
|
661 else |
|
|
662 elts = 0; |
|
|
663 |
|
|
664 prefix = strsave (text); |
|
|
665 ptr = strrchr (prefix, '.'); |
|
|
666 *ptr = '\0'; |
|
|
667 |
|
1288
|
668 delete [] hint; |
|
1280
|
669 hint = strsave (ptr + 1); |
|
|
670 |
|
|
671 symbol_record *sr = curr_sym_tab->lookup (id, 0, 0); |
|
|
672 if (! sr) |
|
|
673 sr = global_sym_tab->lookup (id, 0, 0); |
|
|
674 |
|
|
675 if (sr && sr->is_defined ()) |
|
|
676 { |
|
|
677 tree_fvc *tmp_fvc = sr->def (); |
|
|
678 |
|
|
679 tree_constant *def = 0; |
|
|
680 if (tmp_fvc->is_constant ()) |
|
|
681 def = (tree_constant *) tmp_fvc; |
|
|
682 |
|
|
683 if (def && def->is_map ()) |
|
|
684 { |
|
|
685 if (elts && *elts) |
|
|
686 { |
|
|
687 tree_constant ult = def->lookup_map_element (elts, 0, 1); |
|
|
688 |
|
|
689 if (ult.is_map ()) |
|
|
690 { |
|
|
691 Octave_map m = ult.map_value (); |
|
|
692 names = m.make_name_list (); |
|
|
693 } |
|
|
694 } |
|
|
695 else |
|
|
696 { |
|
|
697 Octave_map m = def->map_value (); |
|
|
698 names = m.make_name_list (); |
|
|
699 } |
|
|
700 } |
|
|
701 } |
|
|
702 |
|
|
703 delete [] id; |
|
|
704 |
|
|
705 return names; |
|
|
706 } |
|
|
707 |
|
1430
|
708 // XXX FIXME XXX -- make this generate file names when appropriate. |
|
|
709 |
|
1280
|
710 static char ** |
|
|
711 generate_possible_completions (const char *text, char *& prefix, |
|
|
712 char *& hint) |
|
1
|
713 { |
|
1280
|
714 char **names = 0; |
|
|
715 |
|
|
716 prefix = 0; |
|
|
717 |
|
1430
|
718 if (text && *text && *text != '.' && strrchr (text, '.')) |
|
|
719 names = generate_struct_completions (text, prefix, hint); |
|
|
720 else |
|
|
721 names = make_name_list (); |
|
1280
|
722 |
|
|
723 return names; |
|
|
724 } |
|
|
725 |
|
|
726 static int |
|
|
727 looks_like_struct (const char *nm) |
|
|
728 { |
|
|
729 int retval = 0; |
|
|
730 |
|
1288
|
731 assert (nm); |
|
|
732 |
|
1280
|
733 char *id = strsave (nm); |
|
|
734 char *elts = 0; |
|
|
735 char *ptr = strchr (id, '.'); |
|
|
736 if (ptr) |
|
|
737 { |
|
|
738 *ptr = '\0'; |
|
|
739 elts = ptr + 1; |
|
|
740 } |
|
|
741 |
|
|
742 symbol_record *sr = curr_sym_tab->lookup (id, 0, 0); |
|
|
743 if (! sr) |
|
|
744 sr = global_sym_tab->lookup (id, 0, 0); |
|
|
745 |
|
|
746 if (sr && sr->is_defined ()) |
|
|
747 { |
|
|
748 tree_fvc *tmp_fvc = sr->def (); |
|
|
749 |
|
|
750 tree_constant *def = 0; |
|
|
751 if (tmp_fvc->is_constant ()) |
|
|
752 def = (tree_constant *) tmp_fvc; |
|
|
753 |
|
|
754 if (def && def->is_map ()) |
|
|
755 { |
|
|
756 if (elts && *elts) |
|
|
757 { |
|
|
758 tree_constant ult = def->lookup_map_element (elts, 0, 1); |
|
|
759 |
|
|
760 if (ult.is_map ()) |
|
|
761 retval = 1; |
|
|
762 } |
|
|
763 else |
|
|
764 retval = 1; |
|
|
765 } |
|
|
766 } |
|
|
767 |
|
|
768 delete [] id; |
|
|
769 |
|
|
770 return retval; |
|
|
771 } |
|
|
772 |
|
|
773 static char * |
|
|
774 command_generator (const char *text, int state) |
|
|
775 { |
|
|
776 static char *prefix = 0; |
|
|
777 static char *hint = 0; |
|
|
778 |
|
|
779 static int prefix_len = 0; |
|
|
780 static int hint_len = 0; |
|
|
781 |
|
1
|
782 static int list_index = 0; |
|
1280
|
783 static char **name_list = 0; |
|
1
|
784 |
|
1280
|
785 static int matches = 0; |
|
1
|
786 |
|
|
787 if (state == 0) |
|
|
788 { |
|
|
789 list_index = 0; |
|
|
790 |
|
529
|
791 if (name_list) |
|
244
|
792 { |
|
|
793 char **ptr = name_list; |
|
|
794 while (ptr && *ptr) |
|
|
795 delete [] *ptr++; |
|
1280
|
796 |
|
244
|
797 delete [] name_list; |
|
1280
|
798 |
|
|
799 name_list = 0; |
|
244
|
800 } |
|
1
|
801 |
|
1280
|
802 delete [] prefix; |
|
|
803 prefix = 0; |
|
|
804 |
|
|
805 delete [] hint; |
|
1288
|
806 hint = strsave (text); |
|
1280
|
807 |
|
|
808 name_list = generate_possible_completions (text, prefix, hint); |
|
|
809 |
|
|
810 prefix_len = 0; |
|
|
811 if (prefix) |
|
1288
|
812 prefix_len = strlen (prefix); |
|
1280
|
813 |
|
1288
|
814 assert (hint); |
|
|
815 hint_len = strlen (hint); |
|
1280
|
816 |
|
|
817 matches = 0; |
|
|
818 if (name_list) |
|
|
819 { |
|
|
820 int i = 0; |
|
|
821 while (name_list[i]) |
|
|
822 if (strncmp (name_list[i++], hint, hint_len) == 0) |
|
|
823 matches++; |
|
|
824 } |
|
1
|
825 } |
|
|
826 |
|
1280
|
827 if (name_list && matches) |
|
1
|
828 { |
|
1280
|
829 char *name; |
|
|
830 while ((name = name_list[list_index]) != 0) |
|
244
|
831 { |
|
1280
|
832 list_index++; |
|
|
833 if (strncmp (name, hint, hint_len) == 0) |
|
|
834 { |
|
1288
|
835 int len = 2 + prefix_len + strlen (name); |
|
1466
|
836 char *buf = (char *) malloc (len); |
|
1280
|
837 |
|
|
838 if (prefix) |
|
|
839 { |
|
|
840 strcpy (buf, prefix); |
|
|
841 strcat (buf, "."); |
|
|
842 strcat (buf, name); |
|
|
843 } |
|
|
844 else |
|
|
845 strcpy (buf, name); |
|
|
846 |
|
|
847 if (matches == 1 && looks_like_struct (buf)) |
|
|
848 rl_completion_append_character = '.'; |
|
|
849 else |
|
1430
|
850 rl_completion_append_character |
|
|
851 = user_pref.completion_append_char; |
|
1280
|
852 |
|
|
853 return buf; |
|
|
854 } |
|
244
|
855 } |
|
1
|
856 } |
|
|
857 |
|
529
|
858 return 0; |
|
1
|
859 } |
|
|
860 |
|
269
|
861 static char ** |
|
1488
|
862 command_completer (char *text, int /* start */, int /* end */) |
|
1
|
863 { |
|
529
|
864 char **matches = 0; |
|
1
|
865 matches = completion_matches (text, command_generator); |
|
|
866 return matches; |
|
|
867 } |
|
|
868 |
|
581
|
869 // The next two functions implement the equivalent of the K*rn shell |
|
|
870 // C-o operate-and-get-next-history-line editing command. Stolen from |
|
|
871 // the GNU Bourne Again SHell. |
|
269
|
872 |
|
|
873 // ?? |
|
|
874 static int saved_history_line_to_use = 0; |
|
|
875 |
|
|
876 // ?? |
|
529
|
877 static Function *old_rl_startup_hook = 0; |
|
269
|
878 |
|
|
879 static void |
|
|
880 set_saved_history (void) |
|
|
881 { |
|
|
882 HIST_ENTRY *h; |
|
|
883 |
|
|
884 if (saved_history_line_to_use) |
|
|
885 { |
|
|
886 if (history_set_pos (saved_history_line_to_use)) |
|
|
887 { |
|
|
888 h = current_history (); |
|
|
889 if (h) |
|
|
890 { |
|
|
891 rl_insert_text (h->line); |
|
|
892 |
|
1358
|
893 // Get rid of any undo list created by the previous |
|
|
894 // insert, so the line won't totally be erased when the |
|
|
895 // edits are undone (they will be normally, because this |
|
|
896 // is a history line -- cf. readline.c: line 380 or |
|
|
897 // so). |
|
|
898 |
|
269
|
899 if (rl_undo_list) |
|
|
900 { |
|
|
901 free_undo_list (); |
|
529
|
902 rl_undo_list = 0; |
|
269
|
903 } |
|
|
904 } |
|
|
905 } |
|
|
906 } |
|
|
907 saved_history_line_to_use = 0; |
|
|
908 rl_startup_hook = old_rl_startup_hook; |
|
|
909 } |
|
|
910 |
|
|
911 static void |
|
1488
|
912 operate_and_get_next (int /* count */, int /* c */) |
|
269
|
913 { |
|
|
914 int where; |
|
|
915 |
|
1358
|
916 // Accept the current line. |
|
|
917 |
|
269
|
918 rl_newline (); |
|
|
919 |
|
1358
|
920 // Find the current line, and find the next line to use. |
|
|
921 |
|
269
|
922 where = where_history (); |
|
|
923 |
|
1430
|
924 if ((history_is_stifled () && (history_length >= max_input_history)) |
|
|
925 || (where >= history_length - 1)) |
|
269
|
926 saved_history_line_to_use = where; |
|
|
927 else |
|
|
928 saved_history_line_to_use = where + 1; |
|
|
929 |
|
|
930 old_rl_startup_hook = rl_startup_hook; |
|
|
931 rl_startup_hook = (Function *) set_saved_history; |
|
|
932 } |
|
|
933 |
|
1
|
934 void |
|
|
935 initialize_readline (void) |
|
|
936 { |
|
1358
|
937 // Allow conditional parsing of the ~/.inputrc file |
|
|
938 |
|
1
|
939 rl_readline_name = "Octave"; |
|
|
940 |
|
1358
|
941 // Tell the completer that we want to try first. |
|
|
942 |
|
271
|
943 rl_attempted_completion_function = (CPPFunction *) command_completer; |
|
269
|
944 |
|
1358
|
945 // Bind operate-and-get-next. |
|
|
946 |
|
269
|
947 rl_add_defun ("operate-and-get-next", |
|
|
948 (Function *) operate_and_get_next, CTRL ('O')); |
|
1441
|
949 |
|
1569
|
950 |
|
|
951 // And the history search functions. |
|
|
952 |
|
|
953 rl_add_defun ("history-search-backward", |
|
|
954 (Function *) rl_history_search_backward, META ('p')); |
|
|
955 |
|
|
956 rl_add_defun ("history-search-forward", |
|
|
957 (Function *) rl_history_search_forward, META ('n')); |
|
|
958 |
|
1441
|
959 // Don't treat single quotes as string delimiters when doing paren |
|
|
960 // matching. |
|
|
961 |
|
|
962 rl_paren_string_delimiters = "\""; |
|
1
|
963 } |
|
|
964 |
|
529
|
965 static int |
|
|
966 match_sans_spaces (const char *standard, const char *test) |
|
|
967 { |
|
1034
|
968 char *tmp = strsave (test); |
|
|
969 |
|
|
970 char *tp = tmp; |
|
529
|
971 while (*tp == ' ' || *tp == '\t') |
|
|
972 tp++; |
|
|
973 |
|
1125
|
974 char *ep = tmp + strlen (tmp) - 1; |
|
529
|
975 while (*ep == ' ' || *ep == '\t') |
|
|
976 ep--; |
|
|
977 |
|
1034
|
978 *(ep+1) = '\0'; |
|
|
979 |
|
|
980 int retval = strcmp (standard, tp) == 0; |
|
529
|
981 |
|
1034
|
982 delete [] tmp; |
|
|
983 |
|
|
984 return retval; |
|
|
985 |
|
529
|
986 } |
|
|
987 |
|
581
|
988 // If the user simply hits return, this will produce an empty matrix. |
|
|
989 |
|
529
|
990 static Octave_object |
|
1488
|
991 get_user_input (const Octave_object& args, int debug = 0) |
|
529
|
992 { |
|
|
993 tree_constant retval; |
|
|
994 |
|
|
995 int nargin = args.length (); |
|
|
996 |
|
|
997 int read_as_string = 0; |
|
|
998 |
|
712
|
999 if (nargin == 2) |
|
529
|
1000 read_as_string++; |
|
|
1001 |
|
1363
|
1002 const char *prompt = "debug> "; |
|
712
|
1003 if (nargin > 0) |
|
529
|
1004 { |
|
712
|
1005 prompt = args(0).string_value (); |
|
636
|
1006 |
|
|
1007 if (error_state) |
|
|
1008 { |
|
|
1009 error ("input: unrecognized argument"); |
|
|
1010 return retval; |
|
|
1011 } |
|
529
|
1012 } |
|
|
1013 |
|
|
1014 again: |
|
|
1015 |
|
|
1016 flush_output_to_pager (); |
|
|
1017 |
|
|
1018 char *input_buf = gnu_readline (prompt); |
|
|
1019 |
|
|
1020 if (input_buf) |
|
|
1021 { |
|
|
1022 maybe_save_history (input_buf); |
|
|
1023 |
|
|
1024 int len = strlen (input_buf); |
|
|
1025 |
|
|
1026 if (len < 1) |
|
|
1027 { |
|
|
1028 if (debug) |
|
|
1029 goto again; |
|
|
1030 else |
|
963
|
1031 { |
|
|
1032 if (read_as_string) |
|
|
1033 return ""; |
|
|
1034 else |
|
|
1035 return Matrix (); |
|
|
1036 } |
|
529
|
1037 } |
|
|
1038 |
|
|
1039 if (match_sans_spaces ("exit", input_buf) |
|
|
1040 || match_sans_spaces ("quit", input_buf) |
|
|
1041 || match_sans_spaces ("return", input_buf)) |
|
963
|
1042 { |
|
|
1043 return retval; |
|
|
1044 } |
|
529
|
1045 else if (read_as_string) |
|
963
|
1046 { |
|
|
1047 retval = input_buf; |
|
|
1048 } |
|
529
|
1049 else |
|
|
1050 { |
|
|
1051 int parse_status = 0; |
|
1488
|
1052 retval = eval_string (input_buf, 0, parse_status); |
|
581
|
1053 if (retval.is_defined ()) |
|
|
1054 { |
|
|
1055 if (debug) |
|
|
1056 retval.eval (1); |
|
|
1057 } |
|
|
1058 else |
|
963
|
1059 retval = Matrix (); |
|
529
|
1060 } |
|
|
1061 } |
|
|
1062 else |
|
|
1063 error ("input: reading user-input failed!"); |
|
|
1064 |
|
|
1065 if (debug) |
|
|
1066 goto again; |
|
|
1067 |
|
|
1068 return retval; |
|
|
1069 } |
|
|
1070 |
|
1488
|
1071 DEFUN ("input", Finput, Sinput, 10, |
|
529
|
1072 "input (PROMPT [, S])\n\ |
|
|
1073 \n\ |
|
|
1074 Prompt user for input. If the second argument is present, return |
|
|
1075 value as a string.") |
|
|
1076 { |
|
|
1077 Octave_object retval; |
|
|
1078 |
|
|
1079 int nargin = args.length (); |
|
|
1080 |
|
712
|
1081 if (nargin == 1 || nargin == 2) |
|
1488
|
1082 retval = get_user_input (args); |
|
529
|
1083 else |
|
|
1084 print_usage ("input"); |
|
|
1085 |
|
|
1086 return retval; |
|
|
1087 } |
|
|
1088 |
|
1488
|
1089 DEFUN ("keyboard", Fkeyboard, Skeyboard, 10, |
|
529
|
1090 "keyboard (PROMPT)\n\ |
|
|
1091 \n\ |
|
|
1092 maybe help in debugging function files") |
|
|
1093 { |
|
|
1094 Octave_object retval; |
|
|
1095 |
|
|
1096 int nargin = args.length (); |
|
|
1097 |
|
712
|
1098 if (nargin == 0 || nargin == 1) |
|
1488
|
1099 retval = get_user_input (args, 1); |
|
529
|
1100 else |
|
|
1101 print_usage ("keyboard"); |
|
|
1102 |
|
|
1103 return retval; |
|
|
1104 } |
|
|
1105 |
|
1
|
1106 /* |
|
|
1107 ;;; Local Variables: *** |
|
|
1108 ;;; mode: C++ *** |
|
|
1109 ;;; page-delimiter: "^/\\*" *** |
|
|
1110 ;;; End: *** |
|
|
1111 */ |
