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1 /* |
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2 |
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3 Copyright (C) 2000 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 #if defined (USE_READLINE) |
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28 |
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29 #include <stdio.h> |
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30 #include <stdlib.h> |
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31 #include <string.h> |
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32 |
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33 #include <readline/history.h> |
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34 |
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35 void |
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36 octave_add_history (const char *line) |
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37 { |
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38 add_history (line); |
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39 } |
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40 |
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41 int |
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42 octave_where_history (void) |
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43 { |
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44 return where_history (); |
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45 } |
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46 |
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47 int |
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48 octave_history_length (void) |
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49 { |
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50 return history_length; |
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51 } |
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52 |
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53 int |
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54 octave_max_input_history (void) |
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55 { |
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56 return max_input_history; |
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57 } |
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58 |
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59 int |
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60 octave_history_base (void) |
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61 { |
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62 return history_base; |
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63 } |
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64 |
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65 void |
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66 octave_stifle_history (int n) |
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67 { |
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68 stifle_history (n); |
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69 } |
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70 |
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71 int |
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72 octave_unstifle_history (void) |
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73 { |
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74 return unstifle_history (); |
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75 } |
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76 |
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77 int |
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78 octave_history_is_stifled (void) |
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79 { |
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80 return history_is_stifled (); |
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81 } |
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82 |
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83 int |
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84 octave_history_set_pos (int n) |
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85 { |
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86 return history_set_pos (n); |
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87 } |
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88 |
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89 int |
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90 octave_read_history (const char *f) |
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91 { |
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92 return read_history (f); |
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93 } |
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94 |
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95 void |
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96 octave_using_history (void) |
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97 { |
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98 using_history (); |
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99 } |
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100 |
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101 int |
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102 octave_read_history_range (const char *f, int b, int e) |
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103 { |
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104 return read_history_range (f, b, e); |
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105 } |
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106 |
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107 int |
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108 octave_write_history (const char *f) |
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109 { |
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110 return write_history (f); |
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111 } |
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112 |
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113 int |
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114 octave_append_history (int n, const char *f) |
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115 { |
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116 return append_history (n, f); |
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117 } |
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118 |
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119 int |
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120 octave_history_truncate_file (const char *f, int n) |
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121 { |
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122 return history_truncate_file (f, n); |
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123 } |
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124 |
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125 void |
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126 octave_remove_history (int n) |
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127 { |
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128 HIST_ENTRY *discard = remove_history (n); |
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129 |
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130 if (discard) |
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131 { |
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132 if (discard->line) |
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133 free (discard->line); |
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134 |
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135 free (discard); |
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136 } |
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137 } |
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138 |
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139 char * |
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140 octave_history_goto_mark (int n) |
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141 { |
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142 HIST_ENTRY *h; |
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143 |
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144 char *retval = 0; |
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145 |
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146 if (history_set_pos (n)) |
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147 { |
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148 h = current_history (); |
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149 |
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150 if (h) |
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151 retval = h->line; |
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152 } |
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153 |
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154 return retval; |
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155 } |
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156 |
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157 char * |
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158 octave_history_get (int n) |
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159 { |
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160 char *retval = 0; |
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161 |
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162 HIST_ENTRY *h = history_get (n); |
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163 |
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164 if (h) |
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165 retval = h->line; |
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166 |
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167 return retval; |
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168 } |
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169 |
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170 char ** |
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171 octave_history_list (int limit, int number_lines) |
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172 { |
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173 static char **retval = 0; |
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174 |
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175 HIST_ENTRY **hlist = 0; |
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176 |
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177 if (retval) |
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178 { |
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179 char **p = retval; |
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180 |
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181 while (*p) |
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182 free (*p++); |
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183 |
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184 free (retval); |
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185 |
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186 retval = 0; |
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187 } |
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188 |
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189 hlist = history_list (); |
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190 |
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191 if (hlist) |
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192 { |
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193 int i, k; |
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194 |
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195 int beg = 0; |
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196 int end = 0; |
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197 while (hlist[end]) |
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198 end++; |
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199 |
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200 beg = (limit < 0 || end < limit) ? 0 : (end - limit); |
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201 |
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202 retval = malloc ((end - beg + 1) * sizeof (char **)); |
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203 |
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204 k = 0; |
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205 for (i = beg; i < end; i++) |
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206 { |
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207 char *line = hlist[i]->line; |
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208 int len = line ? strlen (line) : 0; |
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209 char *tmp = malloc (len + 64); |
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210 |
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211 if (number_lines) |
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212 sprintf (tmp, "%5d%c%s", i + history_base, |
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213 hlist[i]->data ? '*' : ' ', |
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214 line ? line : ""); |
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215 else |
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216 sprintf (tmp, "%c%s", hlist[i]->data ? '*' : ' ', |
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217 line ? line : ""); |
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218 |
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219 retval[k++] = tmp; |
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220 } |
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221 |
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222 retval[k] = 0; |
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223 } |
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224 |
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225 return retval; |
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226 } |
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227 |
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228 void |
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229 octave_replace_history_entry (int which, const char *line) |
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230 { |
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231 HIST_ENTRY *discard = replace_history_entry (which, line, 0); |
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232 |
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233 if (discard) |
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234 { |
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235 if (discard->line) |
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236 free (discard->line); |
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237 |
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238 free (discard); |
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239 } |
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240 } |
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241 |
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242 #endif |
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243 |
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244 /* |
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245 ;;; Local Variables: *** |
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246 ;;; mode: C++ *** |
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247 ;;; End: *** |
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248 */ |
