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annotate mcabber/mcabber/compl.c @ 1922:4ba68ad737bc

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Increase the number of available categories for completions
author Mikael Berthe <mikael@lilotux.net>
date Wed, 10 Nov 2010 14:08:24 +0100
parents 057b514b1f12
children 924f4552996c
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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) 2005-2010 Mikael Berthe <mikael@lilotux.net>
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5 * Copyright (C) 2009,2010 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 "logprint.h"
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40
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41 // Completion structure
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42 typedef struct {
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43 GSList *list; // list of matches
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44 guint len_prefix; // length of text already typed by the user
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45 guint len_compl; // length of the last completion
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46 GSList *next; // pointer to next completion to try
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47 } compl;
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48
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49 // Category structure
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50 typedef struct {
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51 guint64 flag;
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52 GSList *words;
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53 } category;
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54
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55 static GSList *Categories;
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56 static compl *InputCompl;
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57
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58 #ifdef MODULES_ENABLE
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59 static guint64 registered_cats;
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60
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61 static inline void register_builtin_cat(guint c) {
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62 registered_cats |= 1UL << (c-1);
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63 }
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64
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65 void compl_init_system(void)
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66 {
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67 // Builtin completion categories:
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68 register_builtin_cat(COMPL_CMD);
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69 register_builtin_cat(COMPL_JID);
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70 register_builtin_cat(COMPL_URLJID);
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71 register_builtin_cat(COMPL_NAME);
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72 register_builtin_cat(COMPL_STATUS);
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73 register_builtin_cat(COMPL_FILENAME);
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74 register_builtin_cat(COMPL_ROSTER);
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75 register_builtin_cat(COMPL_BUFFER);
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76 register_builtin_cat(COMPL_GROUP);
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77 register_builtin_cat(COMPL_GROUPNAME);
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78 register_builtin_cat(COMPL_MULTILINE);
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79 register_builtin_cat(COMPL_ROOM);
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80 register_builtin_cat(COMPL_RESOURCE);
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81 register_builtin_cat(COMPL_AUTH);
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82 register_builtin_cat(COMPL_REQUEST);
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83 register_builtin_cat(COMPL_EVENTS);
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84 register_builtin_cat(COMPL_EVENTSID);
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85 register_builtin_cat(COMPL_PGP);
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86 register_builtin_cat(COMPL_COLOR);
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87 register_builtin_cat(COMPL_OTR);
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88 register_builtin_cat(COMPL_OTRPOLICY);
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89 }
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90
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91 // compl_new_category()
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92 // Reserves id for new completion category.
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93 // Returns 0, if no more categories can be allocated.
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94 // Note, that user should not make any assumptions about id nature,
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95 // as it is likely to change in future.
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96 guint compl_new_category(void)
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97 {
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98 guint i = 0;
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99 while ((registered_cats >> i) & 1)
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100 i++;
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101 if (i >= 8 * sizeof (registered_cats))
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102 return 0;
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103 else {
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104 guint64 id = 1 << i;
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105 registered_cats |= id;
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106 return i+1;
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107 }
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108 }
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109
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110 // compl_del_category(id)
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111 // Frees reserved id for category.
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112 // Note, that for now it not validates its input, so, be careful
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113 // and specify exactly what you get from compl_new_category.
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114 void compl_del_category(guint id)
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115 {
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116 if (!id) {
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117 scr_log_print(LPRINT_LOGNORM, "Error: compl_del_category() - "
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118 "Invalid category.");
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119 return;
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120 }
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121 id--;
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122 registered_cats &= ~(1<<id);
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123 }
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124 #endif
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125
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126 // new_completion(prefix, compl_cat, suffix)
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127 // . prefix = beginning of the word, typed by the user
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128 // . compl_cat = pointer to a completion category list (list of *char)
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129 // . suffix = string to append to all completion possibilities (i.e. ":")
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130 // Set the InputCompl pointer to an allocated compl structure.
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131 // done_completion() must be called when finished.
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132 // Returns the number of possible completions.
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133 guint new_completion(const char *prefix, GSList *compl_cat, const gchar *suffix)
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134 {
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135 compl *c;
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136 GSList *sl_cat;
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137 size_t len = strlen(prefix);
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138
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139 if (InputCompl) { // This should not happen, but hey...
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140 cancel_completion();
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141 }
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142
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143 c = g_new0(compl, 1);
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144 // Build the list of matches
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145 for (sl_cat = compl_cat; sl_cat; sl_cat = g_slist_next(sl_cat)) {
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146 char *word = sl_cat->data;
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147 if (!strncasecmp(prefix, word, len)) {
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148 if (strlen(word) != len) {
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149 gchar *compval;
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150 if (suffix)
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parents: 1729
diff changeset
151 compval = g_strdup_printf("%s%s", word+len, suffix);
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parents: 1729
diff changeset
152 else
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153 compval = g_strdup(word+len);
1852
057b514b1f12 Fix 3 minor warnings
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diff changeset
154 c->list = g_slist_insert_sorted(c->list, compval,
057b514b1f12 Fix 3 minor warnings
Mikael Berthe <mikael@lilotux.net>
parents: 1850
diff changeset
155 (GCompareFunc)g_ascii_strcasecmp);
1756
e2c084204583 Add (optional) suffix after nick completion in Multi-User Chats
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parents: 1729
diff changeset
156 }
94
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157 }
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158 }
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159 c->next = c->list;
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160 InputCompl = c;
1228
9a68fe4515dc Improve MUC nickname completion
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161 return g_slist_length(c->list);
94
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162 }
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163
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164 // done_completion();
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165 void done_completion(void)
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166 {
894
f76b32ff2f14 done_completion(): free all allocated memory
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diff changeset
167 GSList *clp;
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parents: 820
diff changeset
168
98
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169 if (!InputCompl) return;
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170
894
f76b32ff2f14 done_completion(): free all allocated memory
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parents: 820
diff changeset
171 // Free the current completion list
f76b32ff2f14 done_completion(): free all allocated memory
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parents: 820
diff changeset
172 for (clp = InputCompl->list; clp; clp = g_slist_next(clp))
f76b32ff2f14 done_completion(): free all allocated memory
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parents: 820
diff changeset
173 g_free(clp->data);
94
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174 g_slist_free(InputCompl->list);
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175 g_free(InputCompl);
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176 InputCompl = NULL;
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177 }
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178
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179 // cancel_completion()
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180 // Returns the number of chars to delete to cancel the completion
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181 guint cancel_completion(void)
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182 {
98
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183 if (!InputCompl) return 0;
94
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184 return InputCompl->len_compl;
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185 }
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186
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187 // Returns pointer to text to insert, NULL if no completion.
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188 const char *complete()
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189 {
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190 compl* c = InputCompl;
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191 char *r;
98
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192
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193 if (!InputCompl) return NULL;
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194
94
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195 if (!c->next) {
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196 c->next = c->list; // back to the beginning
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197 c->len_compl = 0;
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198 return NULL;
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199 }
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200 r = (char*)c->next->data;
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201 c->next = g_slist_next(c->next);
1240
a54645448e00 Fix completion of strings with multibyte chars
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parents: 1228
diff changeset
202 if (!utf8_mode) {
a54645448e00 Fix completion of strings with multibyte chars
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parents: 1228
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203 c->len_compl = strlen(r);
a54645448e00 Fix completion of strings with multibyte chars
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parents: 1228
diff changeset
204 } else {
a54645448e00 Fix completion of strings with multibyte chars
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205 char *wc;
a54645448e00 Fix completion of strings with multibyte chars
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parents: 1228
diff changeset
206 c->len_compl = 0;
a54645448e00 Fix completion of strings with multibyte chars
Mikael Berthe <mikael@lilotux.net>
parents: 1228
diff changeset
207 for (wc = r; *wc; wc = next_char(wc))
1569
21c553e4bfb9 Fix completion with wide characters (e.g. Japanese characters)
Myhailo Danylenko <isbear@ukrpost.net>
parents: 1414
diff changeset
208 c->len_compl++;
1240
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parents: 1228
diff changeset
209 }
94
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210 return r;
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211 }
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212
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213
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214 /* Categories functions */
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215
95
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216 // compl_add_category_word(categ, command)
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217 // Adds a keyword as a possible completion in category categ.
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e2c084204583 Add (optional) suffix after nick completion in Multi-User Chats
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parents: 1729
diff changeset
218 void compl_add_category_word(guint categ, const gchar *word)
94
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219 {
1922
4ba68ad737bc Increase the number of available categories for completions
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parents: 1852
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220 guint64 catv;
94
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221 GSList *sl_cat;
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222 category *cat;
121
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parents: 104
diff changeset
223 char *nword;
1922
4ba68ad737bc Increase the number of available categories for completions
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parents: 1852
diff changeset
224
4ba68ad737bc Increase the number of available categories for completions
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parents: 1852
diff changeset
225 if (!categ) {
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parents: 1852
diff changeset
226 scr_log_print(LPRINT_LOGNORM, "Error: compl_add_category_word() - "
4ba68ad737bc Increase the number of available categories for completions
Mikael Berthe <mikael@lilotux.net>
parents: 1852
diff changeset
227 "Invalid category.");
4ba68ad737bc Increase the number of available categories for completions
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parents: 1852
diff changeset
228 return;
4ba68ad737bc Increase the number of available categories for completions
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parents: 1852
diff changeset
229 }
4ba68ad737bc Increase the number of available categories for completions
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parents: 1852
diff changeset
230
4ba68ad737bc Increase the number of available categories for completions
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parents: 1852
diff changeset
231 categ--;
4ba68ad737bc Increase the number of available categories for completions
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parents: 1852
diff changeset
232 catv = 1UL << categ;
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parents: 1852
diff changeset
233
94
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234 // Look for category
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diff changeset
235 for (sl_cat=Categories; sl_cat; sl_cat = g_slist_next(sl_cat)) {
1922
4ba68ad737bc Increase the number of available categories for completions
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parents: 1852
diff changeset
236 if (catv == ((category*)sl_cat->data)->flag)
94
9a4aa2797f02 [/trunk] Changeset 108 by mikael
mikael
parents:
diff changeset
237 break;
9a4aa2797f02 [/trunk] Changeset 108 by mikael
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parents:
diff changeset
238 }
9a4aa2797f02 [/trunk] Changeset 108 by mikael
mikael
parents:
diff changeset
239 if (!sl_cat) { // Category not found, let's create it
9a4aa2797f02 [/trunk] Changeset 108 by mikael
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parents:
diff changeset
240 cat = g_new0(category, 1);
1922
4ba68ad737bc Increase the number of available categories for completions
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parents: 1852
diff changeset
241 cat->flag = catv;
94
9a4aa2797f02 [/trunk] Changeset 108 by mikael
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diff changeset
242 Categories = g_slist_append(Categories, cat);
9a4aa2797f02 [/trunk] Changeset 108 by mikael
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diff changeset
243 } else
9a4aa2797f02 [/trunk] Changeset 108 by mikael
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diff changeset
244 cat = (category*)sl_cat->data;
9a4aa2797f02 [/trunk] Changeset 108 by mikael
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diff changeset
245
121
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parents: 104
diff changeset
246 // If word is not space-terminated, we add one trailing space
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parents: 104
diff changeset
247 for (nword = (char*)word; *nword; nword++)
94b251102069 [/trunk] Changeset 134 by mikael
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parents: 104
diff changeset
248 ;
94b251102069 [/trunk] Changeset 134 by mikael
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parents: 104
diff changeset
249 if (nword > word) nword--;
94b251102069 [/trunk] Changeset 134 by mikael
mikael
parents: 104
diff changeset
250 if (*nword != ' ') { // Add a space
1240
a54645448e00 Fix completion of strings with multibyte chars
Mikael Berthe <mikael@lilotux.net>
parents: 1228
diff changeset
251 nword = g_strdup_printf("%s ", word);
121
94b251102069 [/trunk] Changeset 134 by mikael
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parents: 104
diff changeset
252 } else { // word is fine
94b251102069 [/trunk] Changeset 134 by mikael
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parents: 104
diff changeset
253 nword = g_strdup(word);
94b251102069 [/trunk] Changeset 134 by mikael
mikael
parents: 104
diff changeset
254 }
94b251102069 [/trunk] Changeset 134 by mikael
mikael
parents: 104
diff changeset
255
1852
057b514b1f12 Fix 3 minor warnings
Mikael Berthe <mikael@lilotux.net>
parents: 1850
diff changeset
256 if (g_slist_find_custom(cat->words, nword, (GCompareFunc)g_strcmp0) != NULL)
1850
8d7810f529db Sort items in completion lists
alkino <nicolas.cornu@ensi-bourges.fr>
parents: 1828
diff changeset
257 return;
8d7810f529db Sort items in completion lists
alkino <nicolas.cornu@ensi-bourges.fr>
parents: 1828
diff changeset
258
1852
057b514b1f12 Fix 3 minor warnings
Mikael Berthe <mikael@lilotux.net>
parents: 1850
diff changeset
259 cat->words = g_slist_insert_sorted(cat->words, nword,
057b514b1f12 Fix 3 minor warnings
Mikael Berthe <mikael@lilotux.net>
parents: 1850
diff changeset
260 (GCompareFunc)g_ascii_strcasecmp);
94
9a4aa2797f02 [/trunk] Changeset 108 by mikael
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parents:
diff changeset
261 }
9a4aa2797f02 [/trunk] Changeset 108 by mikael
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parents:
diff changeset
262
284
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
263 // compl_del_category_word(categ, command)
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
264 // Removes a keyword from category categ in completion list.
1756
e2c084204583 Add (optional) suffix after nick completion in Multi-User Chats
Mikael Berthe <mikael@lilotux.net>
parents: 1729
diff changeset
265 void compl_del_category_word(guint categ, const gchar *word)
284
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
266 {
1922
4ba68ad737bc Increase the number of available categories for completions
Mikael Berthe <mikael@lilotux.net>
parents: 1852
diff changeset
267 guint64 catv;
284
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
268 GSList *sl_cat, *sl_elt;
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
269 category *cat;
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
270 char *nword;
1922
4ba68ad737bc Increase the number of available categories for completions
Mikael Berthe <mikael@lilotux.net>
parents: 1852
diff changeset
271
4ba68ad737bc Increase the number of available categories for completions
Mikael Berthe <mikael@lilotux.net>
parents: 1852
diff changeset
272 if (!categ) {
4ba68ad737bc Increase the number of available categories for completions
Mikael Berthe <mikael@lilotux.net>
parents: 1852
diff changeset
273 scr_log_print(LPRINT_LOGNORM, "Error: compl_del_category_word() - "
4ba68ad737bc Increase the number of available categories for completions
Mikael Berthe <mikael@lilotux.net>
parents: 1852
diff changeset
274 "Invalid category.");
4ba68ad737bc Increase the number of available categories for completions
Mikael Berthe <mikael@lilotux.net>
parents: 1852
diff changeset
275 return;
4ba68ad737bc Increase the number of available categories for completions
Mikael Berthe <mikael@lilotux.net>
parents: 1852
diff changeset
276 }
4ba68ad737bc Increase the number of available categories for completions
Mikael Berthe <mikael@lilotux.net>
parents: 1852
diff changeset
277
4ba68ad737bc Increase the number of available categories for completions
Mikael Berthe <mikael@lilotux.net>
parents: 1852
diff changeset
278 categ--;
4ba68ad737bc Increase the number of available categories for completions
Mikael Berthe <mikael@lilotux.net>
parents: 1852
diff changeset
279 catv = 1UL << categ;
4ba68ad737bc Increase the number of available categories for completions
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parents: 1852
diff changeset
280
284
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
281 // Look for category
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
282 for (sl_cat=Categories; sl_cat; sl_cat = g_slist_next(sl_cat)) {
1922
4ba68ad737bc Increase the number of available categories for completions
Mikael Berthe <mikael@lilotux.net>
parents: 1852
diff changeset
283 if (catv == ((category*)sl_cat->data)->flag)
284
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
284 break;
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
285 }
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
286 if (!sl_cat) return; // Category not found, finished!
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
287
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
288 cat = (category*)sl_cat->data;
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
289
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
290 // If word is not space-terminated, we add one trailing space
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
291 for (nword = (char*)word; *nword; nword++)
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
292 ;
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
293 if (nword > word) nword--;
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
294 if (*nword != ' ') { // Add a space
1240
a54645448e00 Fix completion of strings with multibyte chars
Mikael Berthe <mikael@lilotux.net>
parents: 1228
diff changeset
295 nword = g_strdup_printf("%s ", word);
284
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
296 } else { // word is fine
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
297 nword = g_strdup(word);
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
298 }
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
299
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
300 sl_elt = cat->words;
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
301 while (sl_elt) {
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
302 if (!strcasecmp((char*)sl_elt->data, nword)) {
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
303 g_free(sl_elt->data);
f879b17ecb8e Add compl_del_category_word()
Mikael Berthe <mikael@lilotux.net>
parents: 225
diff changeset
304 cat->words = g_slist_delete_link(cat->words, sl_elt);
f879b17ecb8e Add compl_del_category_word()
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305 break; // Only remove first occurence
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306 }
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307 sl_elt = g_slist_next(sl_elt);
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308 }
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309 }
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310
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311 // compl_get_category_list()
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312 // Returns a slist of all words in the specified categorie.
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313 // Iff this function sets *dynlist to TRUE, then the caller must free the
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314 // whole list after use.
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315 GSList *compl_get_category_list(guint categ, guint *dynlist)
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316 {
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317 guint64 cat_flags;
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318 GSList *sl_cat;
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319
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320 if (!categ) {
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321 scr_log_print(LPRINT_LOGNORM, "Error: compl_get_category_list() - "
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322 "Invalid category.");
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323 return NULL;
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324 }
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325
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326 *dynlist = FALSE;
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327 cat_flags = 1UL << (categ - 1);
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328
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329 // Look for the category
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330 for (sl_cat=Categories; sl_cat; sl_cat = g_slist_next(sl_cat)) {
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331 if (cat_flags == ((category*)sl_cat->data)->flag)
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332 break;
9a4aa2797f02 [/trunk] Changeset 108 by mikael
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333 }
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334 if (sl_cat) // Category was found, easy...
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335 return ((category*)sl_cat->data)->words;
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336
225
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337 // Handle dynamic SLists
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338 *dynlist = TRUE;
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339 if (categ == COMPL_GROUPNAME) {
225
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340 return compl_list(ROSTER_TYPE_GROUP);
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341 }
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342 if (categ == COMPL_JID) {
225
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343 return compl_list(ROSTER_TYPE_USER);
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344 }
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345 if (categ == COMPL_RESOURCE) {
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89ad7b530b3c MUC: Fix completion for UTF-8 nicknames
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346 return buddy_getresources_locale(NULL);
501
7c1ca00070e8 Add COMPL_RESOURCE (resource completion category)
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347 }
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parents: 1852
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348 if (categ == COMPL_EVENTSID) {
1685
1342df44c814 Improved events interface
Myhailo Danylenko <isbear@ukrpost.net>
parents: 1668
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349 GSList *compl = evs_geteventslist();
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350 GSList *cel;
1342df44c814 Improved events interface
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351 for (cel = compl; cel; cel = cel->next)
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352 cel->data = g_strdup(cel->data);
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353 compl = g_slist_append(compl, g_strdup("list"));
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354 return compl;
757
ae23c8826efb Improve completion for the "/event" command
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parents: 735
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355 }
225
d5ae42cbe1fa [/trunk] Changeset 237 by mikael
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parents: 121
diff changeset
356
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parents: 894
diff changeset
357 *dynlist = FALSE;
94
9a4aa2797f02 [/trunk] Changeset 108 by mikael
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358 return NULL;
9a4aa2797f02 [/trunk] Changeset 108 by mikael
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parents:
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359 }
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parents:
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360
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e6d355e50d7a Update Vim modelines
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parents: 1756
diff changeset
361 /* vim: set expandtab cindent cinoptions=>2\:2(0 sw=2 ts=2: For Vim users... */