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1
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1 // input.cc -*- C++ -*- |
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2 /* |
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3 |
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1009
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4 Copyright (C) 1992, 1993, 1994, 1995 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 2, or (at your option) any |
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11 later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, write to the Free |
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1315
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20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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21 |
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22 */ |
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23 |
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661
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24 /* |
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25 |
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26 The 3 functions listed below were adapted from similar functions |
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27 from GNU Bash, the Bourne Again SHell, copyright (C) 1987, 1989, 1991 |
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28 Free Software Foundation, Inc. |
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29 |
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30 read_octal sub_append_string decode_prompt_string |
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31 |
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32 */ |
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33 |
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1
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34 // Use the GNU readline library for command line editing and hisory. |
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35 |
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240
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36 #ifdef HAVE_CONFIG_H |
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1192
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37 #include <config.h> |
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1
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38 #endif |
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39 |
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1343
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40 #include <ctime> |
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41 #include <cstdio> |
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42 #include <cstdlib> |
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43 #include <cstring> |
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44 #include <cassert> |
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45 #include <csignal> |
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46 |
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1728
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47 #include <string> |
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48 |
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1349
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49 #include <iostream.h> |
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50 #include <strstream.h> |
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51 |
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1350
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52 #ifdef HAVE_UNISTD_H |
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529
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53 #include <sys/types.h> |
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54 #include <unistd.h> |
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55 #endif |
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1343
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56 |
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1
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57 // This must come before anything that includes iostream.h... |
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1350
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58 // (This is apparently no longer true...) |
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1466
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59 |
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1
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60 #include "readline/readline.h" |
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269
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61 #include "readline/history.h" |
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1
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62 |
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581
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63 // Yes, this sucks, but it avoids a conflict with another readline |
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64 // function declared in iostream.h. |
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1350
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65 // (Apparently, there isn't one there now...) |
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581
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66 |
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1
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67 #if 0 |
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68 #define LINE_SIZE 8192 |
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529
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69 static int no_line_editing = 0; |
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1
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70 #endif |
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71 |
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72 char * |
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1363
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73 gnu_readline (const char *s) |
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1
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74 { |
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75 #if 0 |
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76 static int state = 0; |
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529
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77 static char *line_from_stdin = 0; |
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1
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78 if (no_line_editing) |
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79 { |
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80 if (! state) |
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81 { |
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82 line_from_stdin = (char *) malloc (LINE_SIZE); |
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83 state = 1; |
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84 } |
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85 fputs ("octave> ", stdout); |
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86 fgets (line_from_stdin, LINE_SIZE, stdin); |
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87 return line_from_stdin; |
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88 } |
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89 else |
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90 #endif |
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91 return readline (s); |
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92 } |
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93 |
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1755
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94 #include "str-vec.h" |
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95 |
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1352
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96 #include "defun.h" |
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97 #include "dirfns.h" |
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1
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98 #include "error.h" |
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1352
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99 #include "help.h" |
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1
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100 #include "input.h" |
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1352
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101 #include "oct-map.h" |
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1742
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102 #include "oct-hist.h" |
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1670
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103 #include "toplev.h" |
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1755
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104 #include "oct-obj.h" |
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1
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105 #include "pager.h" |
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529
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106 #include "parse.h" |
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1352
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107 #include "pathlen.h" |
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1755
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108 #include "pt-const.h" |
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1352
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109 #include "sighandlers.h" |
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110 #include "symtab.h" |
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1114
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111 #include "sysdep.h" |
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1
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112 #include "user-prefs.h" |
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1352
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113 #include "utils.h" |
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114 #include "variables.h" |
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529
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115 |
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116 // The size that strings change by. |
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117 #ifndef DEFAULT_ARRAY_SIZE |
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118 #define DEFAULT_ARRAY_SIZE 512 |
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119 #endif |
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120 |
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121 // The growth rate for the prompt string. |
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122 #ifndef PROMPT_GROWTH |
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123 #define PROMPT_GROWTH 50 |
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124 #endif |
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1
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125 |
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126 // Global pointer for eval(). |
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1755
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127 string current_eval_string; |
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1
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128 |
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129 // Nonzero means get input from current_eval_string. |
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130 int get_input_from_eval_string = 0; |
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131 |
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338
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132 // Nonzero means we're parsing a function file. |
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133 int reading_fcn_file = 0; |
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1
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134 |
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338
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135 // Simple name of function file we are reading. |
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1755
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136 string curr_fcn_file_name; |
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1606
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137 |
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138 // Full name of file we are reading. |
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1755
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139 string curr_fcn_file_full_name; |
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1
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140 |
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141 // Nonzero means we're parsing a script file. |
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142 int reading_script_file = 0; |
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143 |
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144 // If we are reading from an M-file, this is it. |
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529
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145 FILE *ff_instream = 0; |
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1
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146 |
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147 // Nonzero means we are using readline. |
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148 int using_readline = 1; |
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149 |
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150 // Nonzero means this is an interactive shell. |
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151 int interactive = 0; |
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152 |
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153 // Nonzero means the user forced this shell to be interactive (-i). |
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154 int forced_interactive = 0; |
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155 |
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156 // Should we issue a prompt? |
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157 int promptflag = 1; |
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158 |
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159 // The current line of input, from wherever. |
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1755
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160 string current_input_line; |
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1
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161 |
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162 // A line of input from readline. |
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529
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163 static char *octave_gets_line = 0; |
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164 |
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581
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165 // Return the octal number parsed from STRING, or -1 to indicate that |
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166 // the string contained a bad number. |
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167 |
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529
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168 int |
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1755
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169 read_octal (const string& s) |
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529
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170 { |
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171 int result = 0; |
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172 int digits = 0; |
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173 |
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1755
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174 size_t i = 0; |
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175 size_t slen = s.length (); |
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176 |
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177 while (i < slen && s[i] >= '0' && s[i] < '8') |
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529
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178 { |
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179 digits++; |
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1755
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180 result = (result * 8) + s[i] - '0'; |
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181 i++; |
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529
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182 } |
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183 |
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1755
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184 if (! digits || result > 0777 || i < slen) |
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529
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185 result = -1; |
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186 |
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187 return result; |
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188 } |
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189 |
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581
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190 // Return a string which will be printed as a prompt. The string may |
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191 // contain special characters which are decoded as follows: |
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192 // |
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193 // \t the time |
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194 // \d the date |
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195 // \n CRLF |
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196 // \s the name of the shell (program) |
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197 // \w the current working directory |
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198 // \W the last element of PWD |
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199 // \u your username |
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200 // \h the hostname |
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201 // \# the command number of this command |
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202 // \! the history number of this command |
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203 // \$ a $ or a # if you are root |
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204 // \<octal> character code in octal |
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205 // \\ a backslash |
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206 |
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1755
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207 static string |
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208 decode_prompt_string (const string& s) |
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529
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209 { |
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1755
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210 string result; |
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211 string temp; |
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212 size_t i = 0; |
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213 size_t slen = s.length (); |
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529
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214 int c; |
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215 |
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1755
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216 while (i < slen) |
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529
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217 { |
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1755
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218 c = s[i]; |
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219 |
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220 i++; |
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221 |
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529
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222 if (c == '\\') |
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223 { |
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1755
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224 c = s[i]; |
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529
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225 |
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226 switch (c) |
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227 { |
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228 case '0': |
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229 case '1': |
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230 case '2': |
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231 case '3': |
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232 case '4': |
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233 case '5': |
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234 case '6': |
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235 case '7': |
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1755
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236 // Maybe convert an octal number. |
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529
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237 { |
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1755
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238 int n = read_octal (s.substr (i, 3)); |
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529
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239 |
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1755
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240 temp = "\\"; |
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529
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241 |
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242 if (n != -1) |
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243 { |
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1755
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244 i += 3; |
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529
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245 temp[0] = n; |
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246 } |
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247 |
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248 c = 0; |
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249 goto add_string; |
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250 } |
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251 |
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252 case 't': |
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253 case 'd': |
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1755
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254 // Make the current time/date into a string. |
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529
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255 { |
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1755
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256 time_t now = time (0); |
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257 |
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258 temp = ctime (&now); |
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529
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259 |
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260 if (c == 't') |
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261 { |
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1755
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262 temp = temp.substr (11); |
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263 temp.resize (8); |
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529
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264 } |
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265 else |
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1755
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266 temp.resize (10); |
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529
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267 |
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268 goto add_string; |
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269 } |
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1
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270 |
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529
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271 case 'n': |
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1755
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272 { |
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273 if (! no_line_editing) |
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274 temp = "\r\n"; |
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275 else |
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276 temp = "\n"; |
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277 |
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278 goto add_string; |
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279 } |
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529
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280 |
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281 case 's': |
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282 { |
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283 temp = base_pathname (prog_name); |
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1755
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284 |
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529
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285 goto add_string; |
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286 } |
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287 |
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288 case 'w': |
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289 case 'W': |
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290 { |
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291 #define EFFICIENT |
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292 #ifdef EFFICIENT |
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1358
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293 // Use the value of PWD because it is much more |
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294 // effecient. |
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529
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295 |
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296 temp = user_pref.pwd; |
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297 |
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1755
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298 if (temp.empty ()) |
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299 temp = octave_getcwd (); |
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529
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300 #else |
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1755
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301 temp = octave_getcwd (); |
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529
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302 #endif /* EFFICIENT */ |
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303 |
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304 if (c == 'W') |
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305 { |
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1755
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306 size_t pos = temp.rfind ('/'); |
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307 |
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308 if (pos != NPOS && pos != 0) |
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309 temp = temp.substr (pos + 1); |
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529
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310 } |
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311 else |
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1755
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312 temp = polite_directory_format (temp); |
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313 |
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529
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314 goto add_string; |
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315 } |
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316 |
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317 case 'u': |
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318 { |
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1755
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319 temp = user_name; |
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529
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320 |
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321 goto add_string; |
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322 } |
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323 |
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324 case 'h': |
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325 { |
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1755
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326 temp = host_name; |
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529
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327 |
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1755
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328 size_t pos = temp.find ('.'); |
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329 |
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330 if (pos != NPOS) |
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331 temp.resize (pos); |
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529
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332 |
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333 goto add_string; |
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334 } |
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335 |
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336 case '#': |
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337 { |
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338 char number_buffer[128]; |
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339 sprintf (number_buffer, "%d", current_command_number); |
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1755
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340 temp = number_buffer; |
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341 |
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529
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342 goto add_string; |
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343 } |
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344 |
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345 case '!': |
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346 { |
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347 char number_buffer[128]; |
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348 int num = current_history_number (); |
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349 if (num > 0) |
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350 sprintf (number_buffer, "%d", num); |
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351 else |
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352 strcpy (number_buffer, "!"); |
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1755
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353 temp = number_buffer; |
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354 |
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529
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355 goto add_string; |
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356 } |
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357 |
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358 case '$': |
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1755
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359 { |
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360 temp = (geteuid () == 0 ? "#" : "$"); |
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361 |
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362 goto add_string; |
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363 } |
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529
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364 |
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1568
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365 case '[': |
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366 case ']': |
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1755
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367 { |
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368 temp.resize (2); |
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369 |
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370 temp[0] = '\001'; |
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371 temp[1] = ((c == '[') |
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372 ? RL_PROMPT_START_IGNORE |
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373 : RL_PROMPT_END_IGNORE); |
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374 |
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375 goto add_string; |
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376 } |
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1568
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377 |
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529
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378 case '\\': |
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1755
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379 { |
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380 temp = "\\"; |
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381 |
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382 goto add_string; |
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383 } |
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529
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384 |
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385 default: |
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1755
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386 { |
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387 temp = "\\ "; |
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388 temp[1] = c; |
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389 |
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390 goto add_string; |
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391 } |
|
529
|
392 |
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393 add_string: |
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1755
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394 { |
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395 if (c) |
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396 i++; |
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397 |
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398 result.append (temp); |
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399 |
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400 break; |
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401 } |
|
529
|
402 } |
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403 } |
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404 else |
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1755
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405 result += c; |
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529
|
406 } |
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|
407 |
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408 return result; |
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|
409 } |
|
581
|
410 |
|
1044
|
411 static void |
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1755
|
412 do_input_echo (const string& input_string) |
|
1044
|
413 { |
|
1588
|
414 int do_echo = reading_script_file ? |
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|
415 (user_pref.echo_executing_commands & ECHO_SCRIPTS) |
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|
416 : (user_pref.echo_executing_commands & ECHO_CMD_LINE); |
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|
417 |
|
|
418 if (do_echo) |
|
1044
|
419 { |
|
|
420 ostrstream buf; |
|
|
421 |
|
1403
|
422 if (forced_interactive) |
|
|
423 { |
|
1755
|
424 if (promptflag > 0) |
|
|
425 buf << decode_prompt_string (user_pref.ps1); |
|
|
426 else |
|
|
427 buf << decode_prompt_string (user_pref.ps2); |
|
1403
|
428 } |
|
|
429 else |
|
1755
|
430 buf << decode_prompt_string (user_pref.ps4); |
|
1044
|
431 |
|
1755
|
432 if (! input_string.empty ()) |
|
1044
|
433 { |
|
|
434 buf << input_string; |
|
1755
|
435 |
|
|
436 if (input_string[input_string.length () - 1] != '\n') |
|
1044
|
437 buf << "\n"; |
|
|
438 } |
|
|
439 |
|
|
440 maybe_page_output (buf); |
|
|
441 } |
|
|
442 } |
|
|
443 |
|
581
|
444 // Use GNU readline to get an input line and store it in the history |
|
|
445 // list. |
|
|
446 |
|
287
|
447 static char * |
|
1
|
448 octave_gets (void) |
|
|
449 { |
|
529
|
450 if (octave_gets_line) |
|
126
|
451 { |
|
|
452 free (octave_gets_line); |
|
529
|
453 octave_gets_line = 0; |
|
126
|
454 } |
|
1
|
455 |
|
|
456 if (interactive || forced_interactive) |
|
|
457 { |
|
1755
|
458 const char *ps = (promptflag > 0) ? user_pref.ps1.c_str () : |
|
|
459 user_pref.ps2.c_str (); |
|
|
460 |
|
|
461 const char *prompt = decode_prompt_string (ps).c_str (); |
|
1
|
462 |
|
|
463 if (interactive) |
|
|
464 { |
|
|
465 pipe_handler_error_count = 0; |
|
|
466 flush_output_to_pager (); |
|
|
467 } |
|
|
468 |
|
581
|
469 maybe_write_to_diary_file (prompt); |
|
|
470 |
|
1
|
471 octave_gets_line = gnu_readline (prompt); |
|
581
|
472 |
|
1
|
473 delete [] prompt; |
|
|
474 } |
|
|
475 else |
|
|
476 octave_gets_line = gnu_readline (""); |
|
|
477 |
|
|
478 current_input_line = octave_gets_line; |
|
|
479 |
|
|
480 if (octave_gets_line && *octave_gets_line) |
|
|
481 { |
|
|
482 maybe_save_history (octave_gets_line); |
|
|
483 |
|
581
|
484 maybe_write_to_diary_file (octave_gets_line); |
|
|
485 |
|
1044
|
486 do_input_echo (octave_gets_line); |
|
1
|
487 } |
|
581
|
488 |
|
|
489 maybe_write_to_diary_file ("\n"); |
|
|
490 |
|
1
|
491 return octave_gets_line; |
|
|
492 } |
|
|
493 |
|
581
|
494 // Read a line from the input stream. |
|
|
495 |
|
269
|
496 int |
|
1755
|
497 octave_read (char *buf, unsigned max_size) |
|
1
|
498 { |
|
|
499 int status = 0; |
|
|
500 |
|
|
501 if (get_input_from_eval_string) |
|
|
502 { |
|
1755
|
503 size_t len = current_eval_string.length (); |
|
|
504 |
|
1
|
505 if (len < max_size - 1) |
|
|
506 { |
|
1755
|
507 strcpy (buf, current_eval_string.c_str ()); |
|
1
|
508 buf[len++] = '\n'; |
|
|
509 buf[len] = '\0'; // Paranoia. |
|
|
510 status = len; |
|
|
511 } |
|
|
512 else |
|
|
513 status = -1; |
|
|
514 |
|
1755
|
515 current_input_line = buf; |
|
1
|
516 } |
|
|
517 else if (using_readline) |
|
|
518 { |
|
|
519 char *cp = octave_gets (); |
|
529
|
520 if (cp) |
|
1
|
521 { |
|
1755
|
522 size_t len = strlen (cp); |
|
|
523 |
|
1
|
524 if (len >= max_size) |
|
|
525 status = -1; |
|
|
526 else |
|
|
527 { |
|
|
528 strcpy (buf, cp); |
|
|
529 buf[len++] = '\n'; |
|
|
530 buf[len] = '\0'; // Paranoia. |
|
|
531 status = len; |
|
|
532 } |
|
|
533 } |
|
|
534 current_input_line = cp; |
|
|
535 } |
|
|
536 else |
|
|
537 { |
|
|
538 FILE *curr_stream = rl_instream; |
|
338
|
539 if (reading_fcn_file || reading_script_file) |
|
339
|
540 curr_stream = ff_instream; |
|
1
|
541 |
|
529
|
542 assert (curr_stream); |
|
1
|
543 |
|
1358
|
544 // Why is this required? |
|
1
|
545 buf[0] = '\0'; |
|
|
546 |
|
529
|
547 if (fgets (buf, max_size, curr_stream)) |
|
1
|
548 { |
|
1755
|
549 size_t len = strlen (buf); |
|
|
550 |
|
1
|
551 if (len > max_size - 2) |
|
|
552 status = -1; |
|
|
553 else |
|
|
554 { |
|
|
555 if (buf[len-1] != '\n') |
|
|
556 { |
|
|
557 buf[len++] = '\n'; |
|
|
558 buf[len] = '\0'; |
|
|
559 } |
|
|
560 status = len; |
|
|
561 } |
|
|
562 } |
|
|
563 else |
|
|
564 status = 0; // Tell yylex that we found EOF. |
|
|
565 |
|
1755
|
566 current_input_line = buf; |
|
287
|
567 |
|
1044
|
568 do_input_echo (current_input_line); |
|
|
569 } |
|
287
|
570 |
|
1
|
571 input_line_number++; |
|
1044
|
572 |
|
1
|
573 return status; |
|
|
574 } |
|
|
575 |
|
581
|
576 // Fix things up so that input can come from file `name', printing a |
|
|
577 // warning if the file doesn't exist. |
|
|
578 |
|
1
|
579 FILE * |
|
1750
|
580 get_input_from_file (const string& name, int warn) |
|
1
|
581 { |
|
529
|
582 FILE *instream = 0; |
|
1
|
583 |
|
1750
|
584 if (name.length () > 0) |
|
|
585 instream = fopen (name.c_str (), "r"); |
|
1
|
586 |
|
529
|
587 if (! instream && warn) |
|
1750
|
588 warning ("%s: no such file or directory", name.c_str ()); |
|
1
|
589 |
|
338
|
590 if (reading_fcn_file || reading_script_file) |
|
339
|
591 ff_instream = instream; |
|
1
|
592 else |
|
|
593 rl_instream = instream; |
|
|
594 |
|
|
595 return instream; |
|
|
596 } |
|
|
597 |
|
581
|
598 // Fix things up so that input can come from the standard input. This |
|
|
599 // may need to become much more complicated, which is why it's in a |
|
|
600 // separate function. |
|
|
601 |
|
1
|
602 FILE * |
|
|
603 get_input_from_stdin (void) |
|
|
604 { |
|
|
605 rl_instream = stdin; |
|
|
606 return rl_instream; |
|
|
607 } |
|
|
608 |
|
1755
|
609 static const char ** |
|
1280
|
610 generate_struct_completions (const char *text, char *& prefix, |
|
|
611 char *& hint) |
|
|
612 { |
|
1755
|
613 const char **names = 0; |
|
1280
|
614 |
|
1288
|
615 assert (text); |
|
|
616 |
|
1280
|
617 char *id = strsave (text); |
|
|
618 char *ptr = strchr (id, '.'); |
|
|
619 *ptr = '\0'; |
|
|
620 |
|
|
621 char *elts = ptr + 1; |
|
|
622 ptr = strrchr (elts, '.'); |
|
|
623 if (ptr) |
|
|
624 *ptr = '\0'; |
|
|
625 else |
|
|
626 elts = 0; |
|
|
627 |
|
|
628 prefix = strsave (text); |
|
|
629 ptr = strrchr (prefix, '.'); |
|
|
630 *ptr = '\0'; |
|
|
631 |
|
1288
|
632 delete [] hint; |
|
1280
|
633 hint = strsave (ptr + 1); |
|
|
634 |
|
|
635 symbol_record *sr = curr_sym_tab->lookup (id, 0, 0); |
|
|
636 if (! sr) |
|
|
637 sr = global_sym_tab->lookup (id, 0, 0); |
|
|
638 |
|
|
639 if (sr && sr->is_defined ()) |
|
|
640 { |
|
|
641 tree_fvc *tmp_fvc = sr->def (); |
|
|
642 |
|
|
643 tree_constant *def = 0; |
|
|
644 if (tmp_fvc->is_constant ()) |
|
|
645 def = (tree_constant *) tmp_fvc; |
|
|
646 |
|
|
647 if (def && def->is_map ()) |
|
|
648 { |
|
1755
|
649 string_vector tmp_names; |
|
|
650 |
|
1280
|
651 if (elts && *elts) |
|
|
652 { |
|
|
653 tree_constant ult = def->lookup_map_element (elts, 0, 1); |
|
|
654 |
|
|
655 if (ult.is_map ()) |
|
|
656 { |
|
|
657 Octave_map m = ult.map_value (); |
|
1755
|
658 tmp_names = m.make_name_list (); |
|
1280
|
659 } |
|
|
660 } |
|
|
661 else |
|
|
662 { |
|
|
663 Octave_map m = def->map_value (); |
|
1755
|
664 tmp_names = m.make_name_list (); |
|
|
665 } |
|
|
666 |
|
|
667 int n = tmp_names.length (); |
|
|
668 |
|
|
669 if (n > 0) |
|
|
670 { |
|
|
671 names = new const char * [n+1]; |
|
|
672 for (int i = 0; i < n; i++) |
|
|
673 names[i] = strsave (tmp_names[i].c_str ()); |
|
|
674 names[n] = 0; |
|
1280
|
675 } |
|
|
676 } |
|
|
677 } |
|
|
678 |
|
|
679 delete [] id; |
|
|
680 |
|
|
681 return names; |
|
|
682 } |
|
|
683 |
|
1430
|
684 // XXX FIXME XXX -- make this generate file names when appropriate. |
|
|
685 |
|
1755
|
686 static const char ** |
|
1280
|
687 generate_possible_completions (const char *text, char *& prefix, |
|
|
688 char *& hint) |
|
1
|
689 { |
|
1755
|
690 const char **names = 0; |
|
1280
|
691 |
|
|
692 prefix = 0; |
|
|
693 |
|
1430
|
694 if (text && *text && *text != '.' && strrchr (text, '.')) |
|
|
695 names = generate_struct_completions (text, prefix, hint); |
|
|
696 else |
|
1755
|
697 { |
|
|
698 string_vector tmp_names = make_name_list (); |
|
|
699 |
|
|
700 int n = tmp_names.length (); |
|
|
701 |
|
|
702 if (n > 0) |
|
|
703 { |
|
|
704 names = new const char * [n+1]; |
|
|
705 for (int i = 0; i < n; i++) |
|
|
706 names[i] = strsave (tmp_names[i].c_str ()); |
|
|
707 names[n] = 0; |
|
|
708 } |
|
|
709 } |
|
1280
|
710 |
|
|
711 return names; |
|
|
712 } |
|
|
713 |
|
|
714 static int |
|
|
715 looks_like_struct (const char *nm) |
|
|
716 { |
|
|
717 int retval = 0; |
|
|
718 |
|
1288
|
719 assert (nm); |
|
|
720 |
|
1280
|
721 char *id = strsave (nm); |
|
|
722 char *elts = 0; |
|
|
723 char *ptr = strchr (id, '.'); |
|
|
724 if (ptr) |
|
|
725 { |
|
|
726 *ptr = '\0'; |
|
|
727 elts = ptr + 1; |
|
|
728 } |
|
|
729 |
|
|
730 symbol_record *sr = curr_sym_tab->lookup (id, 0, 0); |
|
|
731 if (! sr) |
|
|
732 sr = global_sym_tab->lookup (id, 0, 0); |
|
|
733 |
|
|
734 if (sr && sr->is_defined ()) |
|
|
735 { |
|
|
736 tree_fvc *tmp_fvc = sr->def (); |
|
|
737 |
|
|
738 tree_constant *def = 0; |
|
|
739 if (tmp_fvc->is_constant ()) |
|
|
740 def = (tree_constant *) tmp_fvc; |
|
|
741 |
|
|
742 if (def && def->is_map ()) |
|
|
743 { |
|
|
744 if (elts && *elts) |
|
|
745 { |
|
|
746 tree_constant ult = def->lookup_map_element (elts, 0, 1); |
|
|
747 |
|
|
748 if (ult.is_map ()) |
|
|
749 retval = 1; |
|
|
750 } |
|
|
751 else |
|
|
752 retval = 1; |
|
|
753 } |
|
|
754 } |
|
|
755 |
|
|
756 delete [] id; |
|
|
757 |
|
|
758 return retval; |
|
|
759 } |
|
|
760 |
|
|
761 static char * |
|
|
762 command_generator (const char *text, int state) |
|
|
763 { |
|
|
764 static char *prefix = 0; |
|
|
765 static char *hint = 0; |
|
|
766 |
|
|
767 static int prefix_len = 0; |
|
|
768 static int hint_len = 0; |
|
|
769 |
|
1
|
770 static int list_index = 0; |
|
1755
|
771 static const char **name_list = 0; |
|
1
|
772 |
|
1280
|
773 static int matches = 0; |
|
1
|
774 |
|
|
775 if (state == 0) |
|
|
776 { |
|
|
777 list_index = 0; |
|
|
778 |
|
529
|
779 if (name_list) |
|
244
|
780 { |
|
1755
|
781 const char **ptr = name_list; |
|
|
782 |
|
244
|
783 while (ptr && *ptr) |
|
|
784 delete [] *ptr++; |
|
1280
|
785 |
|
244
|
786 delete [] name_list; |
|
1280
|
787 |
|
|
788 name_list = 0; |
|
244
|
789 } |
|
1
|
790 |
|
1280
|
791 delete [] prefix; |
|
|
792 prefix = 0; |
|
|
793 |
|
|
794 delete [] hint; |
|
1288
|
795 hint = strsave (text); |
|
1280
|
796 |
|
|
797 name_list = generate_possible_completions (text, prefix, hint); |
|
|
798 |
|
|
799 prefix_len = 0; |
|
|
800 if (prefix) |
|
1288
|
801 prefix_len = strlen (prefix); |
|
1280
|
802 |
|
1288
|
803 assert (hint); |
|
|
804 hint_len = strlen (hint); |
|
1280
|
805 |
|
|
806 matches = 0; |
|
|
807 if (name_list) |
|
|
808 { |
|
|
809 int i = 0; |
|
|
810 while (name_list[i]) |
|
|
811 if (strncmp (name_list[i++], hint, hint_len) == 0) |
|
|
812 matches++; |
|
|
813 } |
|
1
|
814 } |
|
|
815 |
|
1280
|
816 if (name_list && matches) |
|
1
|
817 { |
|
1755
|
818 const char *name; |
|
|
819 |
|
1280
|
820 while ((name = name_list[list_index]) != 0) |
|
244
|
821 { |
|
1280
|
822 list_index++; |
|
|
823 if (strncmp (name, hint, hint_len) == 0) |
|
|
824 { |
|
1288
|
825 int len = 2 + prefix_len + strlen (name); |
|
1466
|
826 char *buf = (char *) malloc (len); |
|
1280
|
827 |
|
|
828 if (prefix) |
|
|
829 { |
|
|
830 strcpy (buf, prefix); |
|
|
831 strcat (buf, "."); |
|
|
832 strcat (buf, name); |
|
|
833 } |
|
|
834 else |
|
|
835 strcpy (buf, name); |
|
|
836 |
|
|
837 if (matches == 1 && looks_like_struct (buf)) |
|
|
838 rl_completion_append_character = '.'; |
|
|
839 else |
|
1430
|
840 rl_completion_append_character |
|
|
841 = user_pref.completion_append_char; |
|
1280
|
842 |
|
|
843 return buf; |
|
|
844 } |
|
244
|
845 } |
|
1
|
846 } |
|
|
847 |
|
529
|
848 return 0; |
|
1
|
849 } |
|
|
850 |
|
269
|
851 static char ** |
|
1488
|
852 command_completer (char *text, int /* start */, int /* end */) |
|
1
|
853 { |
|
529
|
854 char **matches = 0; |
|
1
|
855 matches = completion_matches (text, command_generator); |
|
|
856 return matches; |
|
|
857 } |
|
|
858 |
|
581
|
859 // The next two functions implement the equivalent of the K*rn shell |
|
|
860 // C-o operate-and-get-next-history-line editing command. Stolen from |
|
|
861 // the GNU Bourne Again SHell. |
|
269
|
862 |
|
|
863 // ?? |
|
|
864 static int saved_history_line_to_use = 0; |
|
|
865 |
|
|
866 // ?? |
|
529
|
867 static Function *old_rl_startup_hook = 0; |
|
269
|
868 |
|
|
869 static void |
|
|
870 set_saved_history (void) |
|
|
871 { |
|
|
872 HIST_ENTRY *h; |
|
|
873 |
|
|
874 if (saved_history_line_to_use) |
|
|
875 { |
|
|
876 if (history_set_pos (saved_history_line_to_use)) |
|
|
877 { |
|
|
878 h = current_history (); |
|
|
879 if (h) |
|
|
880 { |
|
|
881 rl_insert_text (h->line); |
|
|
882 |
|
1358
|
883 // Get rid of any undo list created by the previous |
|
|
884 // insert, so the line won't totally be erased when the |
|
|
885 // edits are undone (they will be normally, because this |
|
|
886 // is a history line -- cf. readline.c: line 380 or |
|
|
887 // so). |
|
|
888 |
|
269
|
889 if (rl_undo_list) |
|
|
890 { |
|
|
891 free_undo_list (); |
|
529
|
892 rl_undo_list = 0; |
|
269
|
893 } |
|
|
894 } |
|
|
895 } |
|
|
896 } |
|
|
897 saved_history_line_to_use = 0; |
|
|
898 rl_startup_hook = old_rl_startup_hook; |
|
|
899 } |
|
|
900 |
|
|
901 static void |
|
1488
|
902 operate_and_get_next (int /* count */, int /* c */) |
|
269
|
903 { |
|
|
904 int where; |
|
|
905 |
|
1358
|
906 // Accept the current line. |
|
|
907 |
|
269
|
908 rl_newline (); |
|
|
909 |
|
1358
|
910 // Find the current line, and find the next line to use. |
|
|
911 |
|
269
|
912 where = where_history (); |
|
|
913 |
|
1430
|
914 if ((history_is_stifled () && (history_length >= max_input_history)) |
|
|
915 || (where >= history_length - 1)) |
|
269
|
916 saved_history_line_to_use = where; |
|
|
917 else |
|
|
918 saved_history_line_to_use = where + 1; |
|
|
919 |
|
|
920 old_rl_startup_hook = rl_startup_hook; |
|
|
921 rl_startup_hook = (Function *) set_saved_history; |
|
|
922 } |
|
|
923 |
|
1
|
924 void |
|
|
925 initialize_readline (void) |
|
|
926 { |
|
1705
|
927 // Set things up internally in case some function that uses readline |
|
|
928 // (currently Fclc(), maybe others) is called before readline(). |
|
|
929 |
|
|
930 rl_initialize (); |
|
|
931 |
|
1358
|
932 // Allow conditional parsing of the ~/.inputrc file |
|
|
933 |
|
1
|
934 rl_readline_name = "Octave"; |
|
|
935 |
|
1358
|
936 // Tell the completer that we want to try first. |
|
|
937 |
|
271
|
938 rl_attempted_completion_function = (CPPFunction *) command_completer; |
|
269
|
939 |
|
1358
|
940 // Bind operate-and-get-next. |
|
|
941 |
|
269
|
942 rl_add_defun ("operate-and-get-next", |
|
|
943 (Function *) operate_and_get_next, CTRL ('O')); |
|
1441
|
944 |
|
1569
|
945 |
|
|
946 // And the history search functions. |
|
|
947 |
|
|
948 rl_add_defun ("history-search-backward", |
|
|
949 (Function *) rl_history_search_backward, META ('p')); |
|
|
950 |
|
|
951 rl_add_defun ("history-search-forward", |
|
|
952 (Function *) rl_history_search_forward, META ('n')); |
|
|
953 |
|
1441
|
954 // Don't treat single quotes as string delimiters when doing paren |
|
|
955 // matching. |
|
|
956 |
|
|
957 rl_paren_string_delimiters = "\""; |
|
1
|
958 } |
|
|
959 |
|
529
|
960 static int |
|
|
961 match_sans_spaces (const char *standard, const char *test) |
|
|
962 { |
|
1034
|
963 char *tmp = strsave (test); |
|
|
964 |
|
|
965 char *tp = tmp; |
|
529
|
966 while (*tp == ' ' || *tp == '\t') |
|
|
967 tp++; |
|
|
968 |
|
1125
|
969 char *ep = tmp + strlen (tmp) - 1; |
|
529
|
970 while (*ep == ' ' || *ep == '\t') |
|
|
971 ep--; |
|
|
972 |
|
1034
|
973 *(ep+1) = '\0'; |
|
|
974 |
|
|
975 int retval = strcmp (standard, tp) == 0; |
|
529
|
976 |
|
1034
|
977 delete [] tmp; |
|
|
978 |
|
|
979 return retval; |
|
|
980 |
|
529
|
981 } |
|
|
982 |
|
581
|
983 // If the user simply hits return, this will produce an empty matrix. |
|
|
984 |
|
529
|
985 static Octave_object |
|
1488
|
986 get_user_input (const Octave_object& args, int debug = 0) |
|
529
|
987 { |
|
|
988 tree_constant retval; |
|
|
989 |
|
|
990 int nargin = args.length (); |
|
|
991 |
|
|
992 int read_as_string = 0; |
|
|
993 |
|
712
|
994 if (nargin == 2) |
|
529
|
995 read_as_string++; |
|
|
996 |
|
1363
|
997 const char *prompt = "debug> "; |
|
1728
|
998 string tstr; |
|
712
|
999 if (nargin > 0) |
|
529
|
1000 { |
|
1728
|
1001 tstr = args(0).string_value (); |
|
|
1002 prompt = tstr.c_str (); |
|
636
|
1003 |
|
|
1004 if (error_state) |
|
|
1005 { |
|
|
1006 error ("input: unrecognized argument"); |
|
|
1007 return retval; |
|
|
1008 } |
|
529
|
1009 } |
|
|
1010 |
|
|
1011 again: |
|
|
1012 |
|
|
1013 flush_output_to_pager (); |
|
|
1014 |
|
|
1015 char *input_buf = gnu_readline (prompt); |
|
|
1016 |
|
|
1017 if (input_buf) |
|
|
1018 { |
|
|
1019 maybe_save_history (input_buf); |
|
|
1020 |
|
|
1021 int len = strlen (input_buf); |
|
|
1022 |
|
|
1023 if (len < 1) |
|
|
1024 { |
|
|
1025 if (debug) |
|
|
1026 goto again; |
|
|
1027 else |
|
963
|
1028 { |
|
|
1029 if (read_as_string) |
|
|
1030 return ""; |
|
|
1031 else |
|
|
1032 return Matrix (); |
|
|
1033 } |
|
529
|
1034 } |
|
|
1035 |
|
|
1036 if (match_sans_spaces ("exit", input_buf) |
|
|
1037 || match_sans_spaces ("quit", input_buf) |
|
|
1038 || match_sans_spaces ("return", input_buf)) |
|
963
|
1039 { |
|
|
1040 return retval; |
|
|
1041 } |
|
529
|
1042 else if (read_as_string) |
|
963
|
1043 { |
|
|
1044 retval = input_buf; |
|
|
1045 } |
|
529
|
1046 else |
|
|
1047 { |
|
|
1048 int parse_status = 0; |
|
1488
|
1049 retval = eval_string (input_buf, 0, parse_status); |
|
581
|
1050 if (retval.is_defined ()) |
|
|
1051 { |
|
|
1052 if (debug) |
|
|
1053 retval.eval (1); |
|
|
1054 } |
|
|
1055 else |
|
963
|
1056 retval = Matrix (); |
|
529
|
1057 } |
|
|
1058 } |
|
|
1059 else |
|
|
1060 error ("input: reading user-input failed!"); |
|
|
1061 |
|
|
1062 if (debug) |
|
|
1063 goto again; |
|
|
1064 |
|
|
1065 return retval; |
|
|
1066 } |
|
|
1067 |
|
1488
|
1068 DEFUN ("input", Finput, Sinput, 10, |
|
529
|
1069 "input (PROMPT [, S])\n\ |
|
|
1070 \n\ |
|
|
1071 Prompt user for input. If the second argument is present, return |
|
|
1072 value as a string.") |
|
|
1073 { |
|
|
1074 Octave_object retval; |
|
|
1075 |
|
|
1076 int nargin = args.length (); |
|
|
1077 |
|
712
|
1078 if (nargin == 1 || nargin == 2) |
|
1488
|
1079 retval = get_user_input (args); |
|
529
|
1080 else |
|
|
1081 print_usage ("input"); |
|
|
1082 |
|
|
1083 return retval; |
|
|
1084 } |
|
|
1085 |
|
1488
|
1086 DEFUN ("keyboard", Fkeyboard, Skeyboard, 10, |
|
529
|
1087 "keyboard (PROMPT)\n\ |
|
|
1088 \n\ |
|
|
1089 maybe help in debugging function files") |
|
|
1090 { |
|
|
1091 Octave_object retval; |
|
|
1092 |
|
|
1093 int nargin = args.length (); |
|
|
1094 |
|
712
|
1095 if (nargin == 0 || nargin == 1) |
|
1488
|
1096 retval = get_user_input (args, 1); |
|
529
|
1097 else |
|
|
1098 print_usage ("keyboard"); |
|
|
1099 |
|
|
1100 return retval; |
|
|
1101 } |
|
|
1102 |
|
1588
|
1103 DEFUN_TEXT("echo", Fecho, Secho, 10, |
|
|
1104 "echo [options]\n\ |
|
|
1105 \n\ |
|
|
1106 echo [on|off] -- enable or disable echoing of commands as\n\ |
|
|
1107 they are executed in script files\n\ |
|
|
1108 \n\ |
|
|
1109 echo [on all|off all] -- enable or disable echoing of commands as they\n\ |
|
|
1110 are executed in script files and functions\n\ |
|
|
1111 \n\ |
|
|
1112 Without any arguments, toggle the current echo state.") |
|
|
1113 { |
|
|
1114 Octave_object retval; |
|
|
1115 |
|
1755
|
1116 int argc = args.length () + 1; |
|
|
1117 |
|
|
1118 string_vector argv = make_argv (args, "echo"); |
|
|
1119 |
|
|
1120 if (error_state) |
|
|
1121 return retval; |
|
1588
|
1122 |
|
|
1123 switch (argc) |
|
|
1124 { |
|
|
1125 case 1: |
|
|
1126 { |
|
|
1127 int echo_cmds = user_pref.echo_executing_commands; |
|
|
1128 if ((echo_cmds & ECHO_SCRIPTS) || (echo_cmds & ECHO_FUNCTIONS)) |
|
|
1129 bind_builtin_variable ("echo_executing_commands", ECHO_OFF); |
|
|
1130 else |
|
|
1131 bind_builtin_variable ("echo_executing_commands", ECHO_SCRIPTS); |
|
|
1132 } |
|
|
1133 break; |
|
|
1134 |
|
|
1135 case 2: |
|
|
1136 { |
|
1755
|
1137 string arg = argv[1]; |
|
|
1138 |
|
|
1139 if (arg == "on") |
|
1588
|
1140 bind_builtin_variable ("echo_executing_commands", ECHO_SCRIPTS); |
|
1755
|
1141 else if (arg == "off") |
|
1588
|
1142 bind_builtin_variable ("echo_executing_commands", ECHO_OFF); |
|
|
1143 else |
|
|
1144 print_usage ("echo"); |
|
|
1145 } |
|
|
1146 break; |
|
|
1147 |
|
|
1148 case 3: |
|
|
1149 { |
|
1755
|
1150 string arg = argv[1]; |
|
|
1151 |
|
|
1152 if (arg == "on" && argv[2] == "all") |
|
1588
|
1153 bind_builtin_variable ("echo_executing_commands", |
|
|
1154 (ECHO_SCRIPTS | ECHO_FUNCTIONS)); |
|
1755
|
1155 else if (arg == "off" && argv[2] == "all") |
|
1588
|
1156 bind_builtin_variable ("echo_executing_commands", ECHO_OFF); |
|
|
1157 else |
|
|
1158 print_usage ("echo"); |
|
|
1159 } |
|
|
1160 break; |
|
|
1161 |
|
|
1162 default: |
|
|
1163 print_usage ("echo"); |
|
|
1164 break; |
|
|
1165 } |
|
|
1166 |
|
|
1167 return retval; |
|
|
1168 } |
|
|
1169 |
|
1
|
1170 /* |
|
|
1171 ;;; Local Variables: *** |
|
|
1172 ;;; mode: C++ *** |
|
|
1173 ;;; page-delimiter: "^/\\*" *** |
|
|
1174 ;;; End: *** |
|
|
1175 */ |
