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annotate mcabber/src/compl.c @ 403:17aa60c6dc63
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| author | Mikael Berthe <mikael@lilotux.net> |
|---|---|
| date | Sat, 27 Aug 2005 11:21:27 +0200 |
| parents | f8f3c7493457 |
| children | 7c1ca00070e8 |
| rev | line source |
|---|---|
| 94 | 1 /* |
| 2 * compl.c -- Completion system | |
| 393 | 3 * |
| 94 | 4 * Copyright (C) 2005 Mikael Berthe <bmikael@lists.lilotux.net> |
| 5 * | |
| 6 * This program is free software; you can redistribute it and/or modify | |
| 7 * it under the terms of the GNU General Public License as published by | |
| 8 * the Free Software Foundation; either version 2 of the License, or (at | |
| 9 * your option) any later version. | |
| 10 * | |
| 11 * This program is distributed in the hope that it will be useful, but | |
| 12 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 * General Public License for more details. | |
| 15 * | |
| 16 * You should have received a copy of the GNU General Public License | |
| 17 * along with this program; if not, write to the Free Software | |
| 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
| 19 * USA | |
| 20 */ | |
| 21 | |
| 22 /* Usage, basically: | |
| 23 * - new_completion(); // 1. Initialization | |
| 24 * - complete(); // 2. 1st completion | |
| 25 * - cancel_completion(); // 3a. 2nd completion / cancel previous | |
| 26 * - complete(); // 3b. 2nd completion / complete | |
| 27 * ... | |
| 28 * - done_completion(); // n. finished -- free allocated areas | |
| 29 * | |
| 30 */ | |
| 31 | |
| 32 #include <string.h> | |
| 33 | |
| 34 #include "compl.h" | |
| 225 | 35 #include "roster.h" |
| 94 | 36 |
| 37 // Completion structure | |
| 38 typedef struct { | |
| 39 GSList *list; // list of matches | |
| 40 guint len_prefix; // length of text already typed by the user | |
| 41 guint len_compl; // length of the last completion | |
| 42 GSList *next; // pointer to next completion to try | |
| 43 } compl; | |
| 44 | |
| 45 // Category structure | |
| 46 typedef struct { | |
| 47 guint flag; | |
| 48 GSList *words; | |
| 49 } category; | |
| 50 | |
| 51 static GSList *Categories; | |
| 52 static compl *InputCompl; | |
| 53 | |
| 54 // new_completion(prefix, compl_cat) | |
| 55 // . prefix = beginning of the word, typed by the user | |
| 56 // . compl_cat = pointer to a completion category list (list of *char) | |
| 57 // Returns a pointer to an allocated compl structure. This structure should | |
| 58 // be freed by the caller when not used anymore. | |
| 59 void new_completion(char *prefix, GSList *compl_cat) | |
| 60 { | |
| 61 compl *c; | |
| 62 GSList *sl_cat; | |
| 63 int len = strlen(prefix); | |
| 64 | |
| 65 if (InputCompl) { // This should not happen, but hey... | |
| 66 cancel_completion(); | |
| 67 } | |
| 68 | |
| 69 c = g_new0(compl, 1); | |
| 70 // Build the list of matches | |
| 71 for (sl_cat=compl_cat; sl_cat; sl_cat = g_slist_next(sl_cat)) { | |
| 72 char *word = sl_cat->data; | |
| 104 | 73 if (!strncasecmp(prefix, word, len)) { |
| 98 | 74 if (strlen(word) != len) |
| 75 c->list = g_slist_append(c->list, g_strdup(word+len)); // TODO sort | |
| 94 | 76 } |
| 77 } | |
| 78 c->next = c->list; | |
| 79 InputCompl = c; | |
| 80 } | |
| 81 | |
| 82 // done_completion(); | |
| 83 void done_completion(void) | |
| 84 { | |
| 98 | 85 if (!InputCompl) return; |
| 86 | |
| 94 | 87 // TODO free everything |
| 88 g_slist_free(InputCompl->list); | |
| 89 g_free(InputCompl); | |
| 90 InputCompl = NULL; | |
| 91 } | |
| 92 | |
| 93 // cancel_completion() | |
| 94 // Returns the number of chars to delete to cancel the completion | |
| 95 //guint cancel_completion(compl *c) | |
| 96 guint cancel_completion(void) | |
| 97 { | |
| 98 | 98 if (!InputCompl) return 0; |
| 94 | 99 return InputCompl->len_compl; |
| 100 } | |
| 101 | |
| 102 // Returns pointer to text to insert, NULL if no completion. | |
| 103 const char *complete() | |
| 104 { | |
| 105 compl* c = InputCompl; | |
| 106 char *r; | |
| 98 | 107 |
| 108 if (!InputCompl) return NULL; | |
| 109 | |
| 94 | 110 if (!c->next) { |
| 111 c->next = c->list; // back to the beginning | |
| 112 c->len_compl = 0; | |
| 113 return NULL; | |
| 114 } | |
| 115 r = (char*)c->next->data; | |
| 116 c->next = g_slist_next(c->next); | |
| 117 c->len_compl = strlen(r); | |
| 118 return r; | |
| 119 } | |
| 120 | |
| 121 | |
| 122 /* Categories functions */ | |
| 123 | |
| 95 | 124 // compl_add_category_word(categ, command) |
| 125 // Adds a keyword as a possible completion in category categ. | |
| 126 void compl_add_category_word(guint categ, const char *word) | |
| 94 | 127 { |
| 128 GSList *sl_cat; | |
| 129 category *cat; | |
| 121 | 130 char *nword; |
| 94 | 131 // Look for category |
| 132 for (sl_cat=Categories; sl_cat; sl_cat = g_slist_next(sl_cat)) { | |
| 133 if (categ == ((category*)sl_cat->data)->flag) | |
| 134 break; | |
| 135 } | |
| 136 if (!sl_cat) { // Category not found, let's create it | |
| 137 cat = g_new0(category, 1); | |
| 138 cat->flag = categ; | |
| 139 Categories = g_slist_append(Categories, cat); | |
| 140 } else | |
| 141 cat = (category*)sl_cat->data; | |
| 142 | |
| 121 | 143 // If word is not space-terminated, we add one trailing space |
| 144 for (nword = (char*)word; *nword; nword++) | |
| 145 ; | |
| 146 if (nword > word) nword--; | |
| 147 if (*nword != ' ') { // Add a space | |
| 148 nword = g_new(char, strlen(word)+2); | |
| 149 strcpy(nword, word); | |
| 150 strcat(nword, " "); | |
| 151 } else { // word is fine | |
| 152 nword = g_strdup(word); | |
| 153 } | |
| 154 | |
| 94 | 155 // TODO Check word does not already exist |
| 121 | 156 cat->words = g_slist_append(cat->words, nword); // TODO sort |
| 94 | 157 } |
| 158 | |
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159 // compl_del_category_word(categ, command) |
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160 // Removes a keyword from category categ in completion list. |
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161 void compl_del_category_word(guint categ, const char *word) |
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162 { |
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163 GSList *sl_cat, *sl_elt; |
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164 category *cat; |
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165 char *nword; |
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166 // Look for category |
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167 for (sl_cat=Categories; sl_cat; sl_cat = g_slist_next(sl_cat)) { |
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168 if (categ == ((category*)sl_cat->data)->flag) |
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169 break; |
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170 } |
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171 if (!sl_cat) return; // Category not found, finished! |
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172 |
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173 cat = (category*)sl_cat->data; |
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174 |
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175 // If word is not space-terminated, we add one trailing space |
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176 for (nword = (char*)word; *nword; nword++) |
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177 ; |
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178 if (nword > word) nword--; |
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179 if (*nword != ' ') { // Add a space |
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180 nword = g_new(char, strlen(word)+2); |
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181 strcpy(nword, word); |
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182 strcat(nword, " "); |
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183 } else { // word is fine |
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184 nword = g_strdup(word); |
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185 } |
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186 |
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187 sl_elt = cat->words; |
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188 while (sl_elt) { |
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189 if (!strcasecmp((char*)sl_elt->data, nword)) { |
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190 g_free(sl_elt->data); |
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191 cat->words = g_slist_delete_link(cat->words, sl_elt); |
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192 break; // Only remove first occurence |
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193 } |
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194 sl_elt = g_slist_next(sl_elt); |
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195 } |
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196 } |
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197 |
| 95 | 198 // compl_get_category_list() |
| 199 // Returns a slist of all words in the categories specified by the given flags | |
| 94 | 200 GSList *compl_get_category_list(guint cat_flags) |
| 201 { | |
| 202 GSList *sl_cat; | |
| 203 // Look for category | |
| 204 // XXX Actually that's not that simple... cat_flags can be a combination | |
| 205 // of several flags! | |
| 206 for (sl_cat=Categories; sl_cat; sl_cat = g_slist_next(sl_cat)) { | |
| 207 if (cat_flags == ((category*)sl_cat->data)->flag) | |
| 208 break; | |
| 209 } | |
| 210 if (sl_cat) // Category was found, easy... | |
| 211 return ((category*)sl_cat->data)->words; | |
| 212 | |
| 225 | 213 // Handle dynamic SLists |
| 214 if (cat_flags == COMPL_GROUPNAME) { | |
| 215 return compl_list(ROSTER_TYPE_GROUP); | |
| 216 } | |
| 217 if (cat_flags == COMPL_JID) { | |
| 218 return compl_list(ROSTER_TYPE_USER); | |
| 219 } | |
| 220 | |
| 94 | 221 return NULL; |
| 222 } | |
| 223 |