Mercurial > ~mikael > mcabber > hg

annotate mcabber/mcabber/compl.c @ 2135:361603828d9e

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Set the trace log file permissions again when we write to it If the log file is recreated (e.g. log rotation) the new file will have correct permissions.
author Mikael Berthe <mikael@lilotux.net>
date Sun, 06 Jul 2014 10:20:30 +0200
parents fc7a758ebbde
children 2f294c2b6778
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1 /*
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2 * compl.c -- Completion system
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3 *
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4 * Copyright (C) 2005-2014 Mikael Berthe <mikael@lilotux.net>
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5 * Copyright (C) 2009-2014 Myhailo Danylenko <isbear@ukrpost.net>
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6 *
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7 * This program is free software; you can redistribute it and/or modify
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8 * it under the terms of the GNU General Public License as published by
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9 * the Free Software Foundation; either version 2 of the License, or (at
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10 * your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * General Public License 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 this program; if not, write to the Free Software
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19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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20 * USA
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21 */
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22
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23 /* Usage, basically:
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24 * - new_completion(); // 1. Initialization
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25 * - complete(); // 2. 1st completion
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26 * - cancel_completion(); // 3a. 2nd completion / cancel previous
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27 * - complete(); // 3b. 2nd completion / complete
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28 * ...
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29 * - done_completion(); // n. finished -- free allocated areas
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30 *
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31 */
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32
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33 #include <string.h>
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34
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35 #include "compl.h"
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36 #include "utf8.h"
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37 #include "roster.h"
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38 #include "events.h"
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39 #include "settings.h"
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40 #include "logprint.h"
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41
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42 // Completion structure
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43 typedef struct {
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44 GSList *list; // list of matches
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45 guint len_prefix; // length of text already typed by the user
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46 guint len_compl; // length of the last completion
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47 GSList *next; // pointer to next completion to try
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48 } compl;
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49
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50 typedef GSList *(*compl_handler_t) (void); // XXX userdata? *dynlist?
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51
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52 // Category structure
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53 typedef struct {
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54 guint flags;
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55 GSList *words;
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56 compl_handler_t dynamic;
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57 } category;
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58
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59 #define COMPL_CAT_BUILTIN 0x01
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60 #define COMPL_CAT_ACTIVE 0x02
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61 #define COMPL_CAT_DYNAMIC 0x04
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62 #define COMPL_CAT_REVERSE 0x10
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63 #define COMPL_CAT_NOSORT 0x20
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64
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65 #define COMPL_CAT_USERFLAGS 0x30
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66
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67 static compl *InputCompl;
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68 static category *Categories;
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69 static guint num_categories;
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70
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71 // Dynamic completions callbacks
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72 static GSList *compl_dyn_group (void)
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73 {
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74 return compl_list(ROSTER_TYPE_GROUP);
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75 }
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76
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77 static GSList *compl_dyn_user (void)
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78 {
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79 return compl_list(ROSTER_TYPE_USER);
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80 }
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81
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82 static GSList *compl_dyn_resource (void)
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83 {
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84 return buddy_getresources_locale(NULL);
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85 }
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86
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87 static GSList *compl_dyn_events (void)
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88 {
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89 GSList *compl = evs_geteventslist();
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90 GSList *cel;
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91 for (cel = compl; cel; cel = cel->next)
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92 cel->data = g_strdup(cel->data);
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93 compl = g_slist_append(compl, g_strdup("list"));
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94 return compl;
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95 }
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96
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97 static inline void register_builtin_cat(guint c, compl_handler_t dynamic) {
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98 Categories[c-1].flags = COMPL_CAT_BUILTIN | COMPL_CAT_ACTIVE;
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99 Categories[c-1].words = NULL;
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100 Categories[c-1].dynamic = dynamic;
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101 if (dynamic != NULL) {
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102 Categories[c-1].flags |= COMPL_CAT_DYNAMIC;
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103 }
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104 }
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105
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106 void compl_init_system(void)
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107 {
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108 num_categories = COMPL_MAX_ID;
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109 #ifdef MODULES_ENABLE
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110 num_categories = ((num_categories / 16) + 1) * 16;
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111 #endif
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112 Categories = g_new0(category, num_categories);
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113
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114 // Builtin completion categories:
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115 register_builtin_cat(COMPL_CMD, NULL);
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116 register_builtin_cat(COMPL_JID, compl_dyn_user);
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117 register_builtin_cat(COMPL_URLJID, NULL);
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118 register_builtin_cat(COMPL_NAME, NULL);
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119 register_builtin_cat(COMPL_STATUS, NULL);
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120 register_builtin_cat(COMPL_FILENAME, NULL);
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121 register_builtin_cat(COMPL_ROSTER, NULL);
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122 register_builtin_cat(COMPL_BUFFER, NULL);
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123 register_builtin_cat(COMPL_GROUP, NULL);
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124 register_builtin_cat(COMPL_GROUPNAME, compl_dyn_group);
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125 register_builtin_cat(COMPL_MULTILINE, NULL);
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126 register_builtin_cat(COMPL_ROOM, NULL);
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127 register_builtin_cat(COMPL_RESOURCE, compl_dyn_resource);
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128 register_builtin_cat(COMPL_AUTH, NULL);
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129 register_builtin_cat(COMPL_REQUEST, NULL);
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130 register_builtin_cat(COMPL_EVENTS, NULL);
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131 register_builtin_cat(COMPL_EVENTSID, compl_dyn_events);
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132 register_builtin_cat(COMPL_PGP, NULL);
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133 register_builtin_cat(COMPL_COLOR, NULL);
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134 register_builtin_cat(COMPL_OTR, NULL);
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135 register_builtin_cat(COMPL_OTRPOLICY, NULL);
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136 register_builtin_cat(COMPL_MODULE, NULL);
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137 register_builtin_cat(COMPL_CARBONS, NULL);
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138 }
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139
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140 #ifdef MODULES_ENABLE
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141 // compl_new_category(flags)
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142 // Reserves id for new completion category.
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143 // Flags determine word sorting order.
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144 // Returns 0, if no more categories can be allocated.
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145 guint compl_new_category(guint flags)
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146 {
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147 guint i;
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148 for (i = 0; i < num_categories; i++)
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149 if (!(Categories[i].flags & COMPL_CAT_ACTIVE))
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150 break;
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151 if (i >= num_categories ) {
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152 guint j;
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153 if (num_categories > G_MAXUINT - 16) {
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154 scr_log_print(LPRINT_LOGNORM, "Warning: Too many "
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155 "completion categories!");
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156 return 0;
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157 }
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158 num_categories += 16;
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159 Categories = g_renew(category, Categories, num_categories);
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160 for (j = i+1; j < num_categories; j++)
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161 Categories[j].flags = 0;
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162 }
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163 Categories[i].flags = COMPL_CAT_ACTIVE | (flags & COMPL_CAT_USERFLAGS);
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164 Categories[i].words = NULL;
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165 return i+1;
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166 }
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167
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168 // compl_del_category(id)
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169 // Frees reserved id for category.
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170 // Note, that for now it not validates its input, so, be careful
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171 // and specify exactly what you get from compl_new_category.
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172 void compl_del_category(guint compl)
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173 {
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174 GSList *wel;
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175
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176 if (!compl) {
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177 scr_log_print(LPRINT_DEBUG, "Error: compl_del_category() - "
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178 "Invalid category (0).");
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179 return;
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180 }
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181
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182 compl--;
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183
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184 if ((compl >= num_categories) ||
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185 (Categories[compl].flags & COMPL_CAT_BUILTIN)) {
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186 scr_log_print(LPRINT_DEBUG, "Error: compl_del_category() "
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187 "Invalid category.");
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188 return;
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189 }
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190
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191 Categories[compl].flags = 0;
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192 for (wel = Categories[compl].words; wel; wel = g_slist_next (wel))
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193 g_free (wel -> data);
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194 g_slist_free (Categories[compl].words);
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195 }
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196 #endif
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197
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198 // new_completion(prefix, compl_cat, suffix)
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199 // . prefix = beginning of the word, typed by the user
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200 // . compl_cat = pointer to a completion category list (list of *char)
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201 // . suffix = string to append to all completion possibilities (i.e. ":")
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202 // Set the InputCompl pointer to an allocated compl structure.
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203 // done_completion() must be called when finished.
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204 // Returns the number of possible completions.
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205 guint new_completion(const char *prefix, GSList *compl_cat, const gchar *suffix)
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206 {
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207 compl *c;
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208 guint ret_len = 0;
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209 GSList *sl_cat;
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210 gint (*cmp)(const char *s1, const char *s2, size_t n);
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211 size_t len = strlen(prefix);
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212
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213 if (InputCompl) { // This should not happen, but hey...
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214 scr_log_print(LPRINT_DEBUG, "Warning: new_completion() - "
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215 "Previous completion exists!");
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216 done_completion();
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217 }
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218
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219 if (settings_opt_get_int("completion_ignore_case"))
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220 cmp = &strncasecmp;
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221 else
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222 cmp = &strncmp;
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223
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224 c = g_new0(compl, 1);
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225 // Build the list of matches
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226 for (sl_cat = compl_cat; sl_cat; sl_cat = g_slist_next(sl_cat)) {
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227 char *word = sl_cat->data;
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228 if (!cmp(prefix, word, len)) {
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229 if (strlen(word) != len) {
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230 gchar *compval;
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231 if (suffix)
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232 compval = g_strdup_printf("%s%s", word+len, suffix);
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233 else
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234 compval = g_strdup(word+len);
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235 // for a bit of efficiency, will reverse order afterwards
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236 c->list = g_slist_prepend(c->list, compval);
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237 ret_len ++;
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238 }
94
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239 }
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240 }
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241 c->next = c->list = g_slist_reverse (c->list);
94
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242 InputCompl = c;
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243 return ret_len;
94
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244 }
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245
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246 // done_completion();
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247 void done_completion(void)
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248 {
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249 GSList *clp;
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250
98
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diff changeset
251 if (!InputCompl) return;
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diff changeset
252
894
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253 // Free the current completion list
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254 for (clp = InputCompl->list; clp; clp = g_slist_next(clp))
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diff changeset
255 g_free(clp->data);
94
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256 g_slist_free(InputCompl->list);
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257 g_free(InputCompl);
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258 InputCompl = NULL;
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259 }
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260
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261 // cancel_completion()
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262 // Returns the number of chars to delete to cancel the completion
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263 guint cancel_completion(void)
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264 {
98
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diff changeset
265 if (!InputCompl) return 0;
94
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266 return InputCompl->len_compl;
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267 }
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268
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269 // Returns pointer to text to insert, NULL if no completion.
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270 const char *complete()
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271 {
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272 compl* c = InputCompl;
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273 char *r;
98
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diff changeset
274
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diff changeset
275 if (!InputCompl) return NULL;
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diff changeset
276
94
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277 if (!c->next) {
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278 c->next = c->list; // back to the beginning
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279 c->len_compl = 0;
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280 return NULL;
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281 }
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282 r = (char*)c->next->data;
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283 c->next = g_slist_next(c->next);
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diff changeset
284 if (!utf8_mode) {
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285 c->len_compl = strlen(r);
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diff changeset
286 } else {
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diff changeset
287 char *wc;
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288 c->len_compl = 0;
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diff changeset
289 for (wc = r; *wc; wc = next_char(wc))
1569
21c553e4bfb9 Fix completion with wide characters (e.g. Japanese characters)
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diff changeset
290 c->len_compl++;
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diff changeset
291 }
94
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292 return r;
9a4aa2797f02 [/trunk] Changeset 108 by mikael
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293 }
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294
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295
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296 /* Categories functions */
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297
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298 static gint compl_sort_forward(gconstpointer a, gconstpointer b)
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299 {
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300 return g_ascii_strcasecmp((const gchar *)a, (const gchar *)b);
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301 }
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302
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303 static gint compl_sort_reverse(gconstpointer a, gconstpointer b)
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304 {
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305 return -g_ascii_strcasecmp((const gchar *)a, (const gchar *)b);
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306 }
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diff changeset
307
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diff changeset
308 static gint compl_sort_append(gconstpointer a, gconstpointer b)
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309 {
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diff changeset
310 return 1;
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311 }
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diff changeset
312
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diff changeset
313 static gint compl_sort_prepend(gconstpointer a, gconstpointer b)
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314 {
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315 return -1;
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316 }
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317
95
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318 // compl_add_category_word(categ, command)
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319 // Adds a keyword as a possible completion in category categ.
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320 void compl_add_category_word(guint categ, const gchar *word)
94
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321 {
121
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322 char *nword;
1922
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323
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324 if (!categ) {
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325 scr_log_print(LPRINT_DEBUG, "Error: compl_add_category_word() - "
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326 "Invalid category (0).");
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327 return;
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328 }
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329
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330 categ--;
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331
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332 if ((categ >= num_categories) ||
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333 !(Categories[categ].flags & COMPL_CAT_ACTIVE)) {
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334 scr_log_print(LPRINT_DEBUG, "Error: compl_add_category_word() - "
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335 "Category does not exist.");
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336 return;
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337 }
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338
121
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339 // If word is not space-terminated, we add one trailing space
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340 for (nword = (char*)word; *nword; nword++)
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341 ;
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342 if (nword > word) nword--;
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parents: 104
diff changeset
343 if (*nword != ' ') { // Add a space
1240
a54645448e00 Fix completion of strings with multibyte chars
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parents: 1228
diff changeset
344 nword = g_strdup_printf("%s ", word);
121
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345 } else { // word is fine
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346 nword = g_strdup(word);
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347 }
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348
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349 if (g_slist_find_custom(Categories[categ].words, nword,
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350 (GCompareFunc)g_strcmp0) == NULL) {
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351 guint flags = Categories[categ].flags;
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352 GCompareFunc comparator = compl_sort_forward;
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353 if (flags & COMPL_CAT_NOSORT) {
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diff changeset
354 if (flags & COMPL_CAT_REVERSE)
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355 comparator = compl_sort_prepend;
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356 else
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357 comparator = compl_sort_append;
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358 } else if (flags & COMPL_CAT_REVERSE)
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359 comparator = compl_sort_reverse;
1850
8d7810f529db Sort items in completion lists
alkino <nicolas.cornu@ensi-bourges.fr>
parents: 1828
diff changeset
360
2042
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361 Categories[categ].words = g_slist_insert_sorted
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diff changeset
362 (Categories[categ].words, nword, comparator);
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363 }
94
9a4aa2797f02 [/trunk] Changeset 108 by mikael
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364 }
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365
284
f879b17ecb8e Add compl_del_category_word()
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diff changeset
366 // compl_del_category_word(categ, command)
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diff changeset
367 // Removes a keyword from category categ in completion list.
1756
e2c084204583 Add (optional) suffix after nick completion in Multi-User Chats
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parents: 1729
diff changeset
368 void compl_del_category_word(guint categ, const gchar *word)
284
f879b17ecb8e Add compl_del_category_word()
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parents: 225
diff changeset
369 {
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370 GSList *wel;
284
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diff changeset
371 char *nword;
1922
4ba68ad737bc Increase the number of available categories for completions
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diff changeset
372
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373 if (!categ) {
2042
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374 scr_log_print(LPRINT_DEBUG, "Error: compl_del_category_word() - "
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diff changeset
375 "Invalid category (0).");
1922
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parents: 1852
diff changeset
376 return;
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parents: 1852
diff changeset
377 }
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parents: 1852
diff changeset
378
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diff changeset
379 categ--;
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diff changeset
380
2042
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diff changeset
381 if ((categ >= num_categories) ||
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parents: 2035
diff changeset
382 !(Categories[categ].flags & COMPL_CAT_ACTIVE)) {
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parents: 2035
diff changeset
383 scr_log_print(LPRINT_DEBUG, "Error: compl_del_category_word() - "
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parents: 2035
diff changeset
384 "Category does not exist.");
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diff changeset
385 return;
284
f879b17ecb8e Add compl_del_category_word()
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parents: 225
diff changeset
386 }
f879b17ecb8e Add compl_del_category_word()
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parents: 225
diff changeset
387
f879b17ecb8e Add compl_del_category_word()
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parents: 225
diff changeset
388 // If word is not space-terminated, we add one trailing space
f879b17ecb8e Add compl_del_category_word()
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parents: 225
diff changeset
389 for (nword = (char*)word; *nword; nword++)
f879b17ecb8e Add compl_del_category_word()
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parents: 225
diff changeset
390 ;
f879b17ecb8e Add compl_del_category_word()
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parents: 225
diff changeset
391 if (nword > word) nword--;
2042
0cb8ea02e472 Make completion sorting order configurable
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diff changeset
392 if (*nword != ' ') // Add a space
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parents: 2035
diff changeset
393 word = nword = g_strdup_printf("%s ", word);
0cb8ea02e472 Make completion sorting order configurable
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parents: 2035
diff changeset
394 else
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parents: 2035
diff changeset
395 nword = NULL;
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parents: 2035
diff changeset
396
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parents: 2035
diff changeset
397 for (wel = Categories[categ].words; wel; wel = g_slist_next (wel)) {
0cb8ea02e472 Make completion sorting order configurable
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parents: 2035
diff changeset
398 if (!strcasecmp((char*)wel->data, word)) {
0cb8ea02e472 Make completion sorting order configurable
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parents: 2035
diff changeset
399 g_free(wel->data);
0cb8ea02e472 Make completion sorting order configurable
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parents: 2035
diff changeset
400 Categories[categ].words = g_slist_delete_link
0cb8ea02e472 Make completion sorting order configurable
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parents: 2035
diff changeset
401 (Categories[categ].words, wel);
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parents: 2035
diff changeset
402 break; // Only remove first occurence
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parents: 2035
diff changeset
403 }
284
f879b17ecb8e Add compl_del_category_word()
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parents: 225
diff changeset
404 }
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
405
2042
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diff changeset
406 g_free (nword);
284
f879b17ecb8e Add compl_del_category_word()
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parents: 225
diff changeset
407 }
f879b17ecb8e Add compl_del_category_word()
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parents: 225
diff changeset
408
95
9e6b7897ec37 [/trunk] Changeset 109 by mikael
mikael
parents: 94
diff changeset
409 // compl_get_category_list()
1922
4ba68ad737bc Increase the number of available categories for completions
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parents: 1852
diff changeset
410 // Returns a slist of all words in the specified categorie.
1076
b9698c89f46d Fix memory leak in scr_handle_tab()
Mikael Berthe <mikael@lilotux.net>
parents: 894
diff changeset
411 // Iff this function sets *dynlist to TRUE, then the caller must free the
b9698c89f46d Fix memory leak in scr_handle_tab()
Mikael Berthe <mikael@lilotux.net>
parents: 894
diff changeset
412 // whole list after use.
1922
4ba68ad737bc Increase the number of available categories for completions
Mikael Berthe <mikael@lilotux.net>
parents: 1852
diff changeset
413 GSList *compl_get_category_list(guint categ, guint *dynlist)
94
9a4aa2797f02 [/trunk] Changeset 108 by mikael
mikael
parents:
diff changeset
414 {
1922
4ba68ad737bc Increase the number of available categories for completions
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parents: 1852
diff changeset
415 if (!categ) {
2042
0cb8ea02e472 Make completion sorting order configurable
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parents: 2035
diff changeset
416 scr_log_print(LPRINT_DEBUG, "Error: compl_get_category_list() - "
0cb8ea02e472 Make completion sorting order configurable
Myhailo Danylenko <isbear@ukrpost.net>
parents: 2035
diff changeset
417 "Invalid category (0).");
1922
4ba68ad737bc Increase the number of available categories for completions
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parents: 1852
diff changeset
418 return NULL;
4ba68ad737bc Increase the number of available categories for completions
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parents: 1852
diff changeset
419 }
4ba68ad737bc Increase the number of available categories for completions
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parents: 1852
diff changeset
420
2042
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parents: 2035
diff changeset
421 categ --;
94
9a4aa2797f02 [/trunk] Changeset 108 by mikael
mikael
parents:
diff changeset
422
2042
0cb8ea02e472 Make completion sorting order configurable
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parents: 2035
diff changeset
423 if ((categ > num_categories) ||
0cb8ea02e472 Make completion sorting order configurable
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parents: 2035
diff changeset
424 !(Categories[categ].flags & COMPL_CAT_ACTIVE)) {
0cb8ea02e472 Make completion sorting order configurable
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parents: 2035
diff changeset
425 scr_log_print(LPRINT_DEBUG, "Error: compl_get_category_list() - "
0cb8ea02e472 Make completion sorting order configurable
Myhailo Danylenko <isbear@ukrpost.net>
parents: 2035
diff changeset
426 "Category does not exist.");
0cb8ea02e472 Make completion sorting order configurable
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parents: 2035
diff changeset
427 return NULL;
757
ae23c8826efb Improve completion for the "/event" command
Mikael Berthe <mikael@lilotux.net>
parents: 735
diff changeset
428 }
225
d5ae42cbe1fa [/trunk] Changeset 237 by mikael
mikael
parents: 121
diff changeset
429
2042
0cb8ea02e472 Make completion sorting order configurable
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parents: 2035
diff changeset
430 if (Categories[categ].flags & COMPL_CAT_DYNAMIC) {
0cb8ea02e472 Make completion sorting order configurable
Myhailo Danylenko <isbear@ukrpost.net>
parents: 2035
diff changeset
431 *dynlist = TRUE;
0cb8ea02e472 Make completion sorting order configurable
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parents: 2035
diff changeset
432 return (*Categories[categ].dynamic) ();
0cb8ea02e472 Make completion sorting order configurable
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parents: 2035
diff changeset
433 } else {
0cb8ea02e472 Make completion sorting order configurable
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parents: 2035
diff changeset
434 *dynlist = FALSE;
0cb8ea02e472 Make completion sorting order configurable
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parents: 2035
diff changeset
435 return Categories[categ].words;
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parents: 2035
diff changeset
436 }
94
9a4aa2797f02 [/trunk] Changeset 108 by mikael
mikael
parents:
diff changeset
437 }
9a4aa2797f02 [/trunk] Changeset 108 by mikael
mikael
parents:
diff changeset
438
1811
e6d355e50d7a Update Vim modelines
Mikael Berthe <mikael@lilotux.net>
parents: 1756
diff changeset
439 /* vim: set expandtab cindent cinoptions=>2\:2(0 sw=2 ts=2: For Vim users... */