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annotate mcabber/mcabber/compl.c @ 1828:8f7d7c05f275

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Small coding style update
author Mikael Berthe <mikael@lilotux.net>
date Sat, 27 Mar 2010 11:56:49 +0100
parents e6d355e50d7a
children 8d7810f529db
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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
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40 // Completion structure
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41 typedef struct {
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42 GSList *list; // list of matches
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43 guint len_prefix; // length of text already typed by the user
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44 guint len_compl; // length of the last completion
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45 GSList *next; // pointer to next completion to try
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46 } compl;
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47
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48 // Category structure
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49 typedef struct {
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50 guint flag;
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51 GSList *words;
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52 } category;
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53
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54 static GSList *Categories;
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55 static compl *InputCompl;
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56
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57 #ifdef MODULES_ENABLE
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58 guint registered_cats = COMPL_CMD|COMPL_JID|COMPL_URLJID|COMPL_NAME| \
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59 COMPL_STATUS|COMPL_FILENAME|COMPL_ROSTER|COMPL_BUFFER| \
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60 COMPL_GROUP|COMPL_GROUPNAME|COMPL_MULTILINE|COMPL_ROOM| \
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61 COMPL_RESOURCE|COMPL_AUTH|COMPL_REQUEST|COMPL_EVENTS| \
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62 COMPL_EVENTSID|COMPL_PGP|COMPL_COLOR| \
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63 COMPL_OTR|COMPL_OTRPOLICY| \
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64 0;
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65
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66 // compl_new_category()
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67 // Reserves id for new completion category.
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68 // Returns 0, if no more categories can be allocated.
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69 // Note, that user should not make any assumptions about id nature,
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70 // as it is likely to change in future.
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71 guint compl_new_category(void)
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72 {
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73 guint i = 0;
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74 while ((registered_cats >> i) & 1)
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75 i++;
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76 if (i >= 8 * sizeof (guint))
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77 return 0;
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78 else {
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79 guint id = 1 << i;
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80 registered_cats |= id;
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81 return id;
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82 }
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83 }
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84
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85 // compl_del_category(id)
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86 // Frees reserved id for category.
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87 // Note, that for now it not validates its input, so, be careful
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88 // and specify exactly what you get from compl_new_category.
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89 void compl_del_category(guint id)
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90 {
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91 registered_cats &= ~id;
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92 }
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93 #endif
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94
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95 // new_completion(prefix, compl_cat, suffix)
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96 // . prefix = beginning of the word, typed by the user
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97 // . compl_cat = pointer to a completion category list (list of *char)
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98 // . suffix = string to append to all completion possibilities (i.e. ":")
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99 // Set the InputCompl pointer to an allocated compl structure.
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100 // done_completion() must be called when finished.
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101 // Returns the number of possible completions.
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102 guint new_completion(const char *prefix, GSList *compl_cat, const gchar *suffix)
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103 {
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104 compl *c;
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105 GSList *sl_cat;
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106 size_t len = strlen(prefix);
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107
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108 if (InputCompl) { // This should not happen, but hey...
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109 cancel_completion();
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110 }
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111
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112 c = g_new0(compl, 1);
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113 // Build the list of matches
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114 for (sl_cat = compl_cat; sl_cat; sl_cat = g_slist_next(sl_cat)) {
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115 char *word = sl_cat->data;
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116 if (!strncasecmp(prefix, word, len)) {
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117 if (strlen(word) != len) {
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118 gchar *compval;
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119 if (suffix)
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120 compval = g_strdup_printf("%s%s", word+len, suffix);
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121 else
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122 compval = g_strdup(word+len);
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123 c->list = g_slist_append(c->list, compval); // TODO sort
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124 }
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125 }
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126 }
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127 c->next = c->list;
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128 InputCompl = c;
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129 return g_slist_length(c->list);
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130 }
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131
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132 // done_completion();
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133 void done_completion(void)
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134 {
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135 GSList *clp;
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136
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137 if (!InputCompl) return;
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138
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139 // Free the current completion list
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140 for (clp = InputCompl->list; clp; clp = g_slist_next(clp))
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141 g_free(clp->data);
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142 g_slist_free(InputCompl->list);
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143 g_free(InputCompl);
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144 InputCompl = NULL;
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145 }
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146
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147 // cancel_completion()
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148 // Returns the number of chars to delete to cancel the completion
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149 guint cancel_completion(void)
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150 {
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151 if (!InputCompl) return 0;
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152 return InputCompl->len_compl;
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153 }
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154
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155 // Returns pointer to text to insert, NULL if no completion.
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156 const char *complete()
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157 {
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158 compl* c = InputCompl;
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159 char *r;
98
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160
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161 if (!InputCompl) return NULL;
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162
94
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163 if (!c->next) {
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164 c->next = c->list; // back to the beginning
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165 c->len_compl = 0;
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166 return NULL;
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167 }
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168 r = (char*)c->next->data;
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169 c->next = g_slist_next(c->next);
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170 if (!utf8_mode) {
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171 c->len_compl = strlen(r);
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172 } else {
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173 char *wc;
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174 c->len_compl = 0;
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175 for (wc = r; *wc; wc = next_char(wc))
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176 c->len_compl++;
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177 }
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178 return r;
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179 }
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180
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181
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182 /* Categories functions */
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183
95
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184 // compl_add_category_word(categ, command)
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185 // Adds a keyword as a possible completion in category categ.
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186 void compl_add_category_word(guint categ, const gchar *word)
94
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187 {
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188 GSList *sl_cat;
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189 category *cat;
121
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190 char *nword;
94
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191 // Look for category
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192 for (sl_cat=Categories; sl_cat; sl_cat = g_slist_next(sl_cat)) {
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193 if (categ == ((category*)sl_cat->data)->flag)
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194 break;
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195 }
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196 if (!sl_cat) { // Category not found, let's create it
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197 cat = g_new0(category, 1);
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198 cat->flag = categ;
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199 Categories = g_slist_append(Categories, cat);
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200 } else
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201 cat = (category*)sl_cat->data;
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202
121
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203 // If word is not space-terminated, we add one trailing space
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204 for (nword = (char*)word; *nword; nword++)
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205 ;
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206 if (nword > word) nword--;
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207 if (*nword != ' ') { // Add a space
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208 nword = g_strdup_printf("%s ", word);
121
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209 } else { // word is fine
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210 nword = g_strdup(word);
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211 }
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212
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213 // TODO Check word does not already exist
121
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214 cat->words = g_slist_append(cat->words, nword); // TODO sort
94
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215 }
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216
284
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217 // compl_del_category_word(categ, command)
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218 // Removes a keyword from category categ in completion list.
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219 void compl_del_category_word(guint categ, const gchar *word)
284
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220 {
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221 GSList *sl_cat, *sl_elt;
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222 category *cat;
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223 char *nword;
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224 // Look for category
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225 for (sl_cat=Categories; sl_cat; sl_cat = g_slist_next(sl_cat)) {
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diff changeset
226 if (categ == ((category*)sl_cat->data)->flag)
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227 break;
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228 }
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229 if (!sl_cat) return; // Category not found, finished!
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230
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231 cat = (category*)sl_cat->data;
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232
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233 // If word is not space-terminated, we add one trailing space
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diff changeset
234 for (nword = (char*)word; *nword; nword++)
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diff changeset
235 ;
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236 if (nword > word) nword--;
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237 if (*nword != ' ') { // Add a space
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238 nword = g_strdup_printf("%s ", word);
284
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239 } else { // word is fine
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240 nword = g_strdup(word);
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241 }
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242
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diff changeset
243 sl_elt = cat->words;
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diff changeset
244 while (sl_elt) {
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diff changeset
245 if (!strcasecmp((char*)sl_elt->data, nword)) {
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diff changeset
246 g_free(sl_elt->data);
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diff changeset
247 cat->words = g_slist_delete_link(cat->words, sl_elt);
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diff changeset
248 break; // Only remove first occurence
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249 }
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diff changeset
250 sl_elt = g_slist_next(sl_elt);
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diff changeset
251 }
f879b17ecb8e Add compl_del_category_word()
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diff changeset
252 }
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diff changeset
253
95
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254 // compl_get_category_list()
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255 // Returns a slist of all words in the categories specified by the given flags
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diff changeset
256 // Iff this function sets *dynlist to TRUE, then the caller must free the
b9698c89f46d Fix memory leak in scr_handle_tab()
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diff changeset
257 // whole list after use.
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diff changeset
258 GSList *compl_get_category_list(guint cat_flags, guint *dynlist)
94
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259 {
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260 GSList *sl_cat;
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261
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262 *dynlist = FALSE;
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diff changeset
263
94
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264 // Look for category
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265 // XXX Actually that's not that simple... cat_flags can be a combination
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266 // of several flags!
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267 for (sl_cat=Categories; sl_cat; sl_cat = g_slist_next(sl_cat)) {
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268 if (cat_flags == ((category*)sl_cat->data)->flag)
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269 break;
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270 }
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271 if (sl_cat) // Category was found, easy...
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272 return ((category*)sl_cat->data)->words;
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273
225
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diff changeset
274 // Handle dynamic SLists
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diff changeset
275 *dynlist = TRUE;
225
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diff changeset
276 if (cat_flags == COMPL_GROUPNAME) {
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277 return compl_list(ROSTER_TYPE_GROUP);
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diff changeset
278 }
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diff changeset
279 if (cat_flags == COMPL_JID) {
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diff changeset
280 return compl_list(ROSTER_TYPE_USER);
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diff changeset
281 }
501
7c1ca00070e8 Add COMPL_RESOURCE (resource completion category)
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diff changeset
282 if (cat_flags == COMPL_RESOURCE) {
792
89ad7b530b3c MUC: Fix completion for UTF-8 nicknames
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diff changeset
283 return buddy_getresources_locale(NULL);
501
7c1ca00070e8 Add COMPL_RESOURCE (resource completion category)
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diff changeset
284 }
757
ae23c8826efb Improve completion for the "/event" command
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diff changeset
285 if (cat_flags == COMPL_EVENTSID) {
1685
1342df44c814 Improved events interface
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diff changeset
286 GSList *compl = evs_geteventslist();
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diff changeset
287 GSList *cel;
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diff changeset
288 for (cel = compl; cel; cel = cel->next)
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diff changeset
289 cel->data = g_strdup(cel->data);
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diff changeset
290 compl = g_slist_append(compl, g_strdup("list"));
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diff changeset
291 return compl;
757
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parents: 735
diff changeset
292 }
225
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parents: 121
diff changeset
293
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diff changeset
294 *dynlist = FALSE;
94
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295 return NULL;
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parents:
diff changeset
296 }
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parents:
diff changeset
297
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parents: 1756
diff changeset
298 /* vim: set expandtab cindent cinoptions=>2\:2(0 sw=2 ts=2: For Vim users... */