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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #ifdef HAVE_CONFIG_H |
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24 #include <config.h> |
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25 #endif |
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26 |
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27 #include <cstring> |
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28 |
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29 #include <string> |
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30 |
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31 #include "cmd-edit.h" |
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32 #include "cmd-hist.h" |
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33 #include "lo-error.h" |
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34 #include "str-vec.h" |
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35 |
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36 command_history *command_history::instance = 0; |
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37 |
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38 #if defined (USE_READLINE) |
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39 |
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40 #include <cstdlib> |
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41 |
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42 #include <strstream.h> |
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43 |
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44 #ifdef HAVE_FCNTL_H |
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45 #include <fcntl.h> |
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46 #endif |
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47 |
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48 #ifdef HAVE_UNISTD_H |
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49 #ifdef HAVE_SYS_TYPES_H |
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50 #include <sys/types.h> |
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51 #endif |
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52 #include <unistd.h> |
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53 #endif |
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54 |
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55 #include <readline/history.h> |
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56 |
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57 #include "file-stat.h" |
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58 |
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59 class |
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60 gnu_history : public command_history |
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61 { |
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62 public: |
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63 |
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64 gnu_history (void) |
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65 : command_history (), mark (0) { } |
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66 |
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67 ~gnu_history (void) { } |
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68 |
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69 void do_add (const string&); |
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70 |
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71 void do_remove (int); |
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72 |
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73 int do_where (void); |
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74 |
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75 int do_length (void); |
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76 |
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77 int do_max_input_history (void); |
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78 |
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79 int do_base (void); |
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80 |
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81 int do_current_number (void); |
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82 |
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83 void do_stifle (int); |
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84 |
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85 int do_unstifle (void); |
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86 |
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87 int do_is_stifled (void); |
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88 |
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89 void do_set_mark (int); |
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90 |
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91 void do_goto_mark (void); |
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92 |
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93 void do_read (const string&, bool); |
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94 |
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95 void do_read_range (const string&, int, int, bool); |
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96 |
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97 void do_write (const string&); |
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98 |
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99 void do_append (const string&); |
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100 |
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101 void do_truncate_file (const string&, int); |
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102 |
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103 string_vector do_list (int, bool); |
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104 |
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105 string do_get_entry (int); |
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106 |
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107 void do_replace_entry (int, const string&); |
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108 |
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109 void do_clean_up_and_save (const string&, int); |
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110 |
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111 private: |
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112 |
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113 int mark; |
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114 }; |
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115 |
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116 void |
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117 gnu_history::do_add (const string& s) |
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118 { |
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119 if (! do_ignoring_entries ()) |
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120 { |
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121 if (s.empty () |
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122 || (s.length () == 1 && (s[0] == '\r' || s[0] == '\n'))) |
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123 return; |
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124 |
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125 ::add_history (s.c_str ()); |
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126 |
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127 lines_this_session++; |
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128 } |
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129 } |
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130 |
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131 void |
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132 gnu_history::do_remove (int n) |
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133 { |
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134 HIST_ENTRY *discard = ::remove_history (n); |
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135 |
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136 if (discard) |
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137 { |
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138 if (discard->line) |
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139 ::free (discard->line); |
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140 |
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141 ::free (discard); |
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142 } |
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143 } |
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144 |
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145 int |
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146 gnu_history::do_where (void) |
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147 { |
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148 return ::where_history (); |
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149 } |
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150 |
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151 int |
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152 gnu_history::do_length (void) |
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153 { |
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154 return ::history_length; |
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155 } |
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156 |
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157 int |
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158 gnu_history::do_max_input_history (void) |
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159 { |
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160 return ::max_input_history; |
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161 } |
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162 |
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163 int |
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164 gnu_history::do_base (void) |
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165 { |
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166 return ::history_base; |
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167 } |
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168 |
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169 int |
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170 gnu_history::do_current_number (void) |
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171 { |
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172 return (xsize > 0) ? do_base () + do_where () : -1; |
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173 } |
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174 |
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175 void |
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176 gnu_history::do_stifle (int n) |
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177 { |
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178 ::stifle_history (n); |
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179 } |
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180 |
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181 int |
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182 gnu_history::do_unstifle (void) |
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183 { |
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184 return ::unstifle_history (); |
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185 } |
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186 |
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187 int |
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188 gnu_history::do_is_stifled (void) |
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189 { |
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190 return ::history_is_stifled (); |
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191 } |
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192 |
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193 void |
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194 gnu_history::do_set_mark (int n) |
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195 { |
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196 mark = n; |
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197 } |
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198 |
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199 void |
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200 gnu_history::do_goto_mark (void) |
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201 { |
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202 HIST_ENTRY *h; |
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203 |
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204 if (mark) |
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205 { |
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206 if (history_set_pos (mark)) |
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207 { |
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208 h = ::current_history (); |
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209 |
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210 if (h) |
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211 { |
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212 command_editor::insert_text (h->line); |
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213 |
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214 command_editor::clear_undo_list (); |
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215 } |
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216 } |
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217 } |
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218 |
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219 mark = 0; |
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220 |
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221 // XXX FIXME XXX -- for operate_and_get_next. |
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222 command_editor::restore_startup_hook (); |
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223 } |
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224 |
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225 void |
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226 gnu_history::do_read (const string& f, bool must_exist) |
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227 { |
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228 if (! f.empty ()) |
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229 { |
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230 int status = ::read_history (f.c_str ()); |
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231 |
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232 if (status != 0 && must_exist) |
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233 error (status); |
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234 else |
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235 { |
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236 lines_in_file = do_where (); |
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237 |
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238 ::using_history (); |
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239 } |
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240 } |
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241 else |
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242 error ("gnu_history::read: missing file name"); |
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243 } |
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244 |
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245 void |
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246 gnu_history::do_read_range (const string& f, int from, int to, |
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247 bool must_exist) |
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248 { |
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249 if (from < 0) |
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250 from = lines_in_file; |
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251 |
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252 if (! f.empty ()) |
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253 { |
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254 int status = ::read_history_range (f.c_str (), from, to); |
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255 |
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256 if (status != 0 && must_exist) |
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257 error (status); |
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258 else |
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259 { |
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260 lines_in_file = do_where (); |
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261 |
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262 ::using_history (); |
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263 } |
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264 } |
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265 else |
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266 error ("gnu_history::read_range: missing file name"); |
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267 } |
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268 |
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269 void |
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270 gnu_history::do_write (const string& f_arg) |
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271 { |
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272 string f = f_arg; |
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273 |
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274 if (f.empty ()) |
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275 f = xfile; |
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276 |
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277 if (! f.empty ()) |
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278 { |
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279 int status = ::write_history (f.c_str ()); |
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280 |
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281 if (status != 0) |
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282 error (status); |
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283 } |
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284 else |
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285 error ("gnu_history::write: missing file name"); |
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286 } |
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287 |
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288 void |
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289 gnu_history::do_append (const string& f_arg) |
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290 { |
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291 if (lines_this_session) |
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292 { |
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293 if (lines_this_session < do_where ()) |
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294 { |
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295 // Create file if it doesn't already exist. |
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296 |
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297 string f = f_arg; |
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298 |
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299 if (f.empty ()) |
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300 f = xfile; |
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301 |
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302 if (! f.empty ()) |
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303 { |
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304 file_stat fs (f); |
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305 |
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306 if (! fs) |
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307 { |
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308 int tem; |
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309 |
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310 tem = open (f.c_str (), O_CREAT, 0666); |
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311 close (tem); |
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312 } |
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313 |
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314 int status = ::append_history (lines_this_session, f.c_str ()); |
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315 |
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316 if (status != 0) |
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317 error (status); |
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318 else |
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319 lines_in_file += lines_this_session; |
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320 |
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321 lines_this_session = 0; |
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322 } |
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323 else |
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324 error ("gnu_history::append: missing file name"); |
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325 } |
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326 } |
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327 } |
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328 |
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329 void |
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330 gnu_history::do_truncate_file (const string& f_arg, int n) |
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331 { |
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332 string f = f_arg; |
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333 |
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334 if (f.empty ()) |
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335 f = xfile; |
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336 |
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337 if (! f.empty ()) |
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338 ::history_truncate_file (f.c_str (), n); |
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339 else |
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340 error ("gnu_history::truncate_file: missing file name"); |
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341 } |
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342 |
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343 string_vector |
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344 gnu_history::do_list (int limit, bool number_lines) |
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345 { |
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346 string_vector retval; |
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347 |
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348 if (limit) |
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349 { |
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350 HIST_ENTRY **hlist = ::history_list (); |
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351 |
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352 if (hlist) |
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353 { |
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354 int end = 0; |
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355 while (hlist[end]) |
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356 end++; |
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357 |
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358 int beg = (limit < 0 || end < limit) ? 0 : (end - limit); |
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359 |
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360 retval.resize (end - beg); |
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361 |
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362 int k = 0; |
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363 for (int i = beg; i < end; i++) |
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364 { |
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365 ostrstream output_buf; |
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366 |
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367 if (number_lines) |
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368 output_buf.form ("%5d%c", i + do_base (), |
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369 hlist[i]->data ? '*' : ' '); |
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370 |
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371 output_buf << hlist[i]->line << ends; |
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372 |
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373 const char *tmp = output_buf.str (); |
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374 |
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375 retval[k++] = tmp; |
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376 |
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377 delete [] tmp; |
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378 } |
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379 } |
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380 } |
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381 |
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382 return retval; |
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383 } |
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384 |
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385 string |
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386 gnu_history::do_get_entry (int n) |
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387 { |
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388 string retval; |
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389 |
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390 HIST_ENTRY *entry = ::history_get (do_base () + n); |
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391 |
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392 if (entry && entry->line) |
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393 retval = entry->line; |
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394 |
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395 return retval; |
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396 } |
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397 |
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398 void |
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399 gnu_history::do_replace_entry (int which, const string& line) |
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400 { |
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401 HIST_ENTRY *discard = ::replace_history_entry (which, line.c_str (), 0); |
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402 |
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403 if (discard) |
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404 { |
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405 if (discard->line) |
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406 ::free (discard->line); |
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407 |
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408 ::free (discard); |
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409 } |
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410 } |
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411 |
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412 void |
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413 gnu_history::do_clean_up_and_save (const string& f_arg, int n) |
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414 { |
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415 string f = f_arg; |
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416 |
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417 if (f.empty ()) |
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418 f = xfile; |
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419 |
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420 if (! f.empty ()) |
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421 { |
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422 if (n < 0) |
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423 n = xsize; |
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424 |
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425 stifle (n); |
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426 |
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427 do_write (f.c_str ()); |
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428 } |
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429 else |
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430 error ("gnu_history::clean_up_and_save: missing file name"); |
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431 } |
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432 |
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433 #endif |
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434 |
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435 bool |
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436 command_history::instance_ok (void) |
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437 { |
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438 bool retval = true; |
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439 |
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440 if (! instance) |
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441 make_command_history (); |
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442 |
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443 if (! instance) |
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444 { |
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445 (*current_liboctave_error_handler) |
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446 ("unable to create command history object!"); |
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447 |
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448 retval = false; |
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449 } |
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450 |
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451 return retval; |
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452 } |
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453 |
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454 void |
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455 command_history::make_command_history (void) |
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456 { |
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457 #if defined (USE_READLINE) |
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458 instance = new gnu_history (); |
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459 #else |
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460 instance = new command_history (); |
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461 #endif |
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462 } |
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463 |
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464 void |
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465 command_history::set_file (const string& f) |
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466 { |
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467 if (instance_ok ()) |
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468 instance->do_set_file (f); |
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469 } |
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470 |
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471 string |
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472 command_history::file (void) |
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473 { |
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474 return (instance_ok ()) |
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475 ? instance->do_file () : string (); |
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476 } |
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477 |
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478 void |
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479 command_history::set_size (int n) |
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480 { |
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481 if (instance_ok ()) |
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482 instance->do_set_size (n); |
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483 } |
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484 |
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485 int |
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486 command_history::size (void) |
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487 { |
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488 return (instance_ok ()) |
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489 ? instance->do_size () : 0; |
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490 } |
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491 |
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492 void |
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493 command_history::ignore_entries (bool flag) |
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494 { |
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495 if (instance_ok ()) |
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496 instance->do_ignore_entries (flag); |
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497 } |
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498 |
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499 bool |
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500 command_history::ignoring_entries (void) |
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501 { |
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502 return (instance_ok ()) |
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503 ? instance->do_ignoring_entries () : false; |
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504 } |
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505 |
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506 void |
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507 command_history::add (const string& s) |
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508 { |
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509 if (instance_ok ()) |
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510 instance->do_add (s); |
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511 } |
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512 |
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513 void |
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514 command_history::remove (int n) |
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515 { |
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516 if (instance_ok ()) |
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517 instance->do_remove (n); |
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518 } |
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|
519 |
|
|
520 int |
|
|
521 command_history::where (void) |
|
|
522 { |
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|
523 return (instance_ok ()) |
|
|
524 ? instance->do_where () : 0; |
|
|
525 } |
|
|
526 |
|
|
527 int |
|
|
528 command_history::length (void) |
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|
529 { |
|
|
530 return (instance_ok ()) |
|
|
531 ? instance->do_length () : 0; |
|
|
532 } |
|
|
533 |
|
|
534 int |
|
|
535 command_history::max_input_history (void) |
|
|
536 { |
|
|
537 return (instance_ok ()) |
|
|
538 ? instance->do_max_input_history () : 0; |
|
|
539 } |
|
|
540 |
|
|
541 int |
|
|
542 command_history::base (void) |
|
|
543 { |
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|
544 return (instance_ok ()) |
|
|
545 ? instance->do_base () : 0; |
|
|
546 } |
|
|
547 |
|
|
548 int |
|
|
549 command_history::current_number (void) |
|
|
550 { |
|
|
551 return (instance_ok ()) |
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|
552 ? instance->do_current_number () : 0; |
|
|
553 } |
|
|
554 |
|
|
555 void |
|
|
556 command_history::stifle (int n) |
|
|
557 { |
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|
558 if (instance_ok ()) |
|
|
559 instance->do_stifle (n); |
|
|
560 } |
|
|
561 |
|
|
562 int |
|
|
563 command_history::unstifle (void) |
|
|
564 { |
|
|
565 return (instance_ok ()) |
|
|
566 ? instance->do_unstifle () : 0; |
|
|
567 } |
|
|
568 |
|
|
569 int |
|
|
570 command_history::is_stifled (void) |
|
|
571 { |
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|
572 return (instance_ok ()) |
|
|
573 ? instance->do_is_stifled () : 0; |
|
|
574 } |
|
|
575 |
|
|
576 void |
|
|
577 command_history::set_mark (int n) |
|
|
578 { |
|
|
579 if (instance_ok ()) |
|
|
580 instance->do_set_mark (n); |
|
|
581 } |
|
|
582 |
|
|
583 int |
|
|
584 command_history::goto_mark (...) |
|
|
585 { |
|
|
586 if (instance_ok ()) |
|
|
587 instance->do_goto_mark (); |
|
|
588 |
|
|
589 return 0; |
|
|
590 } |
|
|
591 |
|
|
592 void |
|
|
593 command_history::read (bool must_exist) |
|
|
594 { |
|
|
595 if (instance_ok ()) |
|
|
596 instance->do_read (must_exist); |
|
|
597 } |
|
|
598 |
|
|
599 void |
|
|
600 command_history::read (const string& f, bool must_exist) |
|
|
601 { |
|
|
602 if (instance_ok ()) |
|
|
603 instance->do_read (f, must_exist); |
|
|
604 } |
|
|
605 |
|
|
606 void |
|
|
607 command_history::read_range (int from, int to, bool must_exist) |
|
|
608 { |
|
|
609 if (instance_ok ()) |
|
|
610 instance->do_read_range (from, to, must_exist); |
|
|
611 } |
|
|
612 |
|
|
613 void |
|
|
614 command_history::read_range (const string& f, int from, int to, |
|
|
615 bool must_exist) |
|
|
616 { |
|
|
617 if (instance_ok ()) |
|
|
618 instance->do_read_range (f, from, to, must_exist); |
|
|
619 } |
|
|
620 |
|
|
621 void |
|
|
622 command_history::write (const string& f) |
|
|
623 { |
|
|
624 if (instance_ok ()) |
|
|
625 instance->do_write (f); |
|
|
626 } |
|
|
627 |
|
|
628 void |
|
|
629 command_history::append (const string& f) |
|
|
630 { |
|
|
631 if (instance_ok ()) |
|
|
632 instance->do_append (f); |
|
|
633 } |
|
|
634 |
|
|
635 void |
|
|
636 command_history::truncate_file (const string& f, int n) |
|
|
637 { |
|
|
638 if (instance_ok ()) |
|
|
639 instance->do_truncate_file (f, n); |
|
|
640 } |
|
|
641 |
|
|
642 string_vector |
|
|
643 command_history::list (int limit, bool number_lines) |
|
|
644 { |
|
|
645 return (instance_ok ()) |
|
|
646 ? instance->do_list (limit, number_lines) : string_vector (); |
|
|
647 } |
|
|
648 |
|
|
649 string |
|
|
650 command_history::get_entry (int n) |
|
|
651 { |
|
|
652 return (instance_ok ()) |
|
|
653 ? instance->do_get_entry (n) : string (); |
|
|
654 } |
|
|
655 |
|
|
656 void |
|
|
657 command_history::replace_entry (int which, const string& line) |
|
|
658 { |
|
|
659 if (instance_ok ()) |
|
|
660 instance->do_replace_entry (which, line); |
|
|
661 } |
|
|
662 |
|
|
663 void |
|
|
664 command_history::clean_up_and_save (const string& f, int n) |
|
|
665 { |
|
|
666 if (instance_ok ()) |
|
|
667 instance->do_clean_up_and_save (f, n); |
|
|
668 } |
|
|
669 |
|
|
670 void |
|
|
671 command_history::do_set_file (const string& f) |
|
|
672 { |
|
|
673 xfile = f; |
|
|
674 } |
|
|
675 |
|
|
676 string |
|
|
677 command_history::do_file (void) |
|
|
678 { |
|
|
679 return xfile; |
|
|
680 } |
|
|
681 |
|
|
682 void |
|
|
683 command_history::do_set_size (int n) |
|
|
684 { |
|
|
685 xsize = n; |
|
|
686 } |
|
|
687 |
|
|
688 int |
|
|
689 command_history::do_size (void) |
|
|
690 { |
|
|
691 return xsize; |
|
|
692 } |
|
|
693 |
|
|
694 void |
|
|
695 command_history::do_ignore_entries (bool flag) |
|
|
696 { |
|
|
697 ignoring_additions = flag; |
|
|
698 } |
|
|
699 |
|
|
700 bool |
|
|
701 command_history::do_ignoring_entries (void) |
|
|
702 { |
|
|
703 return ignoring_additions; |
|
|
704 } |
|
|
705 |
|
|
706 void |
|
|
707 command_history::do_add (const string&) |
|
|
708 { |
|
|
709 } |
|
|
710 |
|
|
711 void |
|
|
712 command_history::do_remove (int) |
|
|
713 { |
|
|
714 } |
|
|
715 |
|
|
716 int |
|
|
717 command_history::do_where (void) |
|
|
718 { |
|
|
719 return 0; |
|
|
720 } |
|
|
721 |
|
|
722 int |
|
|
723 command_history::do_length (void) |
|
|
724 { |
|
|
725 return 0; |
|
|
726 } |
|
|
727 |
|
|
728 int |
|
|
729 command_history::do_max_input_history (void) |
|
|
730 { |
|
|
731 return 0; |
|
|
732 } |
|
|
733 |
|
|
734 int |
|
|
735 command_history::do_base (void) |
|
|
736 { |
|
|
737 return 0; |
|
|
738 } |
|
|
739 |
|
|
740 int |
|
|
741 command_history::do_current_number (void) |
|
|
742 { |
|
|
743 return (xsize > 0) ? do_base () + do_where () : -1; |
|
|
744 } |
|
|
745 |
|
|
746 void |
|
|
747 command_history::do_stifle (int) |
|
|
748 { |
|
|
749 } |
|
|
750 |
|
|
751 int |
|
|
752 command_history::do_unstifle (void) |
|
|
753 { |
|
|
754 return -1; |
|
|
755 } |
|
|
756 |
|
|
757 int |
|
|
758 command_history::do_is_stifled (void) |
|
|
759 { |
|
|
760 return 0; |
|
|
761 } |
|
|
762 |
|
|
763 void |
|
|
764 command_history::do_set_mark (int) |
|
|
765 { |
|
|
766 } |
|
|
767 |
|
|
768 void |
|
|
769 command_history::do_goto_mark (void) |
|
|
770 { |
|
|
771 } |
|
|
772 |
|
|
773 void |
|
|
774 command_history::do_read (bool must_exist) |
|
|
775 { |
|
|
776 do_read (xfile, must_exist); |
|
|
777 } |
|
|
778 |
|
|
779 void |
|
|
780 command_history::do_read (const string& f, bool) |
|
|
781 { |
|
|
782 if (f.empty ()) |
|
|
783 error ("command_history::read: missing file name"); |
|
|
784 } |
|
|
785 |
|
|
786 void |
|
|
787 command_history::do_read_range (int from, int to, bool must_exist) |
|
|
788 { |
|
|
789 do_read_range (xfile, from, to, must_exist); |
|
|
790 } |
|
|
791 |
|
|
792 void |
|
|
793 command_history::do_read_range (const string& f, int, int, bool) |
|
|
794 { |
|
|
795 if (f.empty ()) |
|
|
796 error ("command_history::read_range: missing file name"); |
|
|
797 } |
|
|
798 |
|
|
799 void |
|
|
800 command_history::do_write (const string& f_arg) |
|
|
801 { |
|
|
802 string f = f_arg; |
|
|
803 |
|
|
804 if (f.empty ()) |
|
|
805 f = xfile; |
|
|
806 |
|
|
807 if (f.empty ()) |
|
|
808 error ("command_history::write: missing file name"); |
|
|
809 } |
|
|
810 |
|
|
811 void |
|
|
812 command_history::do_append (const string& f_arg) |
|
|
813 { |
|
|
814 if (lines_this_session) |
|
|
815 { |
|
|
816 if (lines_this_session < do_where ()) |
|
|
817 { |
|
|
818 // Create file if it doesn't already exist. |
|
|
819 |
|
|
820 string f = f_arg; |
|
|
821 |
|
|
822 if (f.empty ()) |
|
|
823 f = xfile; |
|
|
824 |
|
|
825 if (f.empty ()) |
|
|
826 error ("command_history::append: missing file name"); |
|
|
827 } |
|
|
828 } |
|
|
829 } |
|
|
830 |
|
|
831 void |
|
|
832 command_history::do_truncate_file (const string& f_arg, int) |
|
|
833 { |
|
|
834 string f = f_arg; |
|
|
835 |
|
|
836 if (f.empty ()) |
|
|
837 f = xfile; |
|
|
838 |
|
|
839 if (f.empty ()) |
|
|
840 error ("command_history::truncate_file: missing file name"); |
|
|
841 } |
|
|
842 |
|
|
843 string_vector |
|
|
844 command_history::do_list (int, bool) |
|
|
845 { |
|
|
846 return string_vector (); |
|
|
847 } |
|
|
848 |
|
|
849 string |
|
|
850 command_history::do_get_entry (int) |
|
|
851 { |
|
|
852 return string (); |
|
|
853 } |
|
|
854 |
|
|
855 void |
|
|
856 command_history::do_replace_entry (int, const string&) |
|
|
857 { |
|
|
858 } |
|
|
859 |
|
|
860 void |
|
|
861 command_history::do_clean_up_and_save (const string& f_arg, int) |
|
|
862 { |
|
|
863 string f = f_arg; |
|
|
864 |
|
|
865 if (f.empty ()) |
|
|
866 f = xfile; |
|
|
867 |
|
|
868 if (f.empty ()) |
|
1797
|
869 error ("command_history::clean_up_and_save: missing file name"); |
|
|
870 } |
|
|
871 |
|
|
872 void |
|
2470
|
873 command_history::error (int err_num) |
|
1797
|
874 { |
|
2470
|
875 (*current_liboctave_error_handler) ("%s", strerror (err_num)); |
|
1797
|
876 } |
|
|
877 |
|
|
878 void |
|
|
879 command_history::error (const string& s) |
|
|
880 { |
|
|
881 (*current_liboctave_error_handler) ("%s", s.c_str ()); |
|
|
882 } |
|
|
883 |
|
|
884 /* |
|
|
885 ;;; Local Variables: *** |
|
|
886 ;;; mode: C++ *** |
|
|
887 ;;; End: *** |
|
|
888 */ |
