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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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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22 */ |
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23 |
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24 #ifdef HAVE_CONFIG_H |
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25 #include <config.h> |
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26 #endif |
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27 |
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28 #if defined (USE_READLINE) |
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29 |
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30 #include <stdio.h> |
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31 #include <stdlib.h> |
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32 #include <string.h> |
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33 |
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34 #include <readline/history.h> |
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35 |
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36 void |
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37 octave_add_history (const char *line) |
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38 { |
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39 add_history (line); |
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40 } |
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41 |
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42 int |
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43 octave_where_history (void) |
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44 { |
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45 return where_history (); |
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46 } |
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47 |
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48 int |
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49 octave_history_length (void) |
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50 { |
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51 return history_length; |
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52 } |
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53 |
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54 int |
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55 octave_max_input_history (void) |
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56 { |
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57 return max_input_history; |
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58 } |
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59 |
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60 int |
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61 octave_history_base (void) |
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62 { |
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63 return history_base; |
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64 } |
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65 |
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66 void |
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67 octave_stifle_history (int n) |
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68 { |
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69 stifle_history (n); |
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70 } |
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71 |
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72 int |
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73 octave_unstifle_history (void) |
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74 { |
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75 return unstifle_history (); |
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76 } |
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77 |
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78 int |
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79 octave_history_is_stifled (void) |
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80 { |
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81 return history_is_stifled (); |
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82 } |
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83 |
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84 int |
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85 octave_history_set_pos (int n) |
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86 { |
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87 return history_set_pos (n); |
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88 } |
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89 |
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90 int |
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91 octave_read_history (const char *f) |
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92 { |
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93 return read_history (f); |
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94 } |
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95 |
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96 void |
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97 octave_using_history (void) |
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98 { |
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99 using_history (); |
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100 } |
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101 |
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102 int |
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103 octave_read_history_range (const char *f, int b, int e) |
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104 { |
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105 return read_history_range (f, b, e); |
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106 } |
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107 |
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108 int |
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109 octave_write_history (const char *f) |
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110 { |
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111 return write_history (f); |
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112 } |
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113 |
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114 int |
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115 octave_append_history (int n, const char *f) |
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116 { |
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117 return append_history (n, f); |
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118 } |
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119 |
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120 int |
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121 octave_history_truncate_file (const char *f, int n) |
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122 { |
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123 return history_truncate_file (f, n); |
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124 } |
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125 |
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126 void |
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127 octave_remove_history (int n) |
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128 { |
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129 HIST_ENTRY *discard = remove_history (n); |
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130 |
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131 if (discard) |
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132 { |
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133 if (discard->line) |
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134 free (discard->line); |
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135 |
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136 free (discard); |
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137 } |
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138 } |
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139 |
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140 char * |
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141 octave_history_goto_mark (int n) |
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142 { |
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143 HIST_ENTRY *h; |
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144 |
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145 char *retval = 0; |
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146 |
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147 if (history_set_pos (n)) |
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148 { |
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149 h = current_history (); |
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150 |
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151 if (h) |
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152 retval = h->line; |
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153 } |
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154 |
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155 return retval; |
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156 } |
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157 |
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158 char * |
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159 octave_history_get (int n) |
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160 { |
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161 char *retval = 0; |
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162 |
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163 HIST_ENTRY *h = history_get (n); |
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164 |
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165 if (h) |
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166 retval = h->line; |
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167 |
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168 return retval; |
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169 } |
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170 |
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171 char ** |
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172 octave_history_list (int limit, int number_lines) |
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173 { |
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174 static char **retval = 0; |
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175 |
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176 HIST_ENTRY **hlist = 0; |
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177 |
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178 if (retval) |
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179 { |
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180 char **p = retval; |
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181 |
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182 while (*p) |
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183 free (*p++); |
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184 |
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185 free (retval); |
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186 |
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187 retval = 0; |
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188 } |
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189 |
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190 hlist = history_list (); |
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191 |
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192 if (hlist) |
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193 { |
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194 int i, k; |
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195 |
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196 int beg = 0; |
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197 int end = 0; |
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198 while (hlist[end]) |
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199 end++; |
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200 |
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201 beg = (limit < 0 || end < limit) ? 0 : (end - limit); |
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202 |
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203 retval = malloc ((end - beg + 1) * sizeof (char **)); |
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204 |
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205 k = 0; |
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206 for (i = beg; i < end; i++) |
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207 { |
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208 char *line = hlist[i]->line; |
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209 int len = line ? strlen (line) : 0; |
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210 char *tmp = malloc (len + 64); |
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211 |
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212 if (number_lines) |
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213 sprintf (tmp, "%5d%c%s", i + history_base, |
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214 hlist[i]->data ? '*' : ' ', |
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215 line ? line : ""); |
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216 else |
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217 sprintf (tmp, "%c%s", hlist[i]->data ? '*' : ' ', |
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218 line ? line : ""); |
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219 |
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220 retval[k++] = tmp; |
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221 } |
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222 |
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223 retval[k] = 0; |
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224 } |
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225 |
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226 return retval; |
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227 } |
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228 |
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229 void |
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230 octave_replace_history_entry (int which, const char *line) |
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231 { |
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232 HIST_ENTRY *discard = replace_history_entry (which, line, 0); |
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233 |
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234 if (discard) |
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235 { |
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236 if (discard->line) |
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237 free (discard->line); |
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238 |
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239 free (discard); |
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240 } |
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241 } |
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242 |
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243 #endif |
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244 |
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245 /* |
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246 ;;; Local Variables: *** |
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247 ;;; mode: C++ *** |
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248 ;;; End: *** |
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249 */ |
