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