Mercurial > ~mikael > mcabber > hg
annotate mcabber/mcabber/help.c @ 1901:84bb3e893586
Update some file headers
| author | Mikael Berthe <mikael@lilotux.net> |
|---|---|
| date | Wed, 14 Apr 2010 21:11:12 +0200 |
| parents | 60db836ad98a |
| children | ee8657ff9aa8 |
| rev | line source |
|---|---|
| 868 | 1 /* |
| 2 * help.c -- Help command | |
| 3 * | |
|
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Update some file headers
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4 * Copyright (C) 2006-2010 Mikael Berthe <mikael@lilotux.net> |
| 1678 | 5 * Copyrigth (C) 2009 Myhailo Danylenko <isbear@ukrpost.net> |
| 868 | 6 * |
| 7 * This program is free software; you can redistribute it and/or modify | |
| 8 * it under the terms of the GNU General Public License as published by | |
| 9 * the Free Software Foundation; either version 2 of the License, or (at | |
| 10 * your option) any later version. | |
| 11 * | |
| 12 * This program is distributed in the hope that it will be useful, but | |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 * General Public License for more details. | |
| 16 * | |
| 17 * You should have received a copy of the GNU General Public License | |
| 18 * along with this program; if not, write to the Free Software | |
| 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
| 20 * USA | |
| 21 */ | |
| 22 | |
| 1678 | 23 /* |
| 24 * How it works | |
| 25 * | |
| 26 * Main calls help_init, that installs option guards. These guards do | |
| 27 * nothing, but set help_dirs_stalled flag. When user issues help command, | |
| 28 * it checks, if help_dirs_stalled flag is set, and if it is, it calls | |
| 29 * init_help_dirs before performing help search. | |
| 30 * | |
| 31 * Options: | |
| 32 * lang List of semicolon-separated language codes. If unset, will | |
| 33 * be detected from locale, with fallback to english. | |
| 34 * help_dirs List of semicolon-seaparated directories, where search for | |
| 35 * help (in language subdirectories) will be performed. | |
| 36 * Defaults to DATA_DIR/mcabber/help. | |
| 37 * help_to_current Print help to current buddy's buffer. | |
| 38 * | |
| 39 * XXX: | |
| 40 * Remove command list from hlp.txt and print detected list of all help | |
| 41 * topics? | |
| 42 */ | |
| 868 | 43 |
| 1678 | 44 #include <glib.h> |
| 45 #include <string.h> | |
| 46 #include <locale.h> | |
| 47 #include <sys/types.h> | |
| 48 #include <dirent.h> | |
| 49 | |
| 50 #include "logprint.h" | |
| 51 #include "screen.h" | |
| 52 #include "hbuf.h" | |
| 868 | 53 #include "settings.h" |
| 54 #include "utils.h" | |
| 55 | |
| 1678 | 56 static GSList *help_dirs = NULL; |
| 57 static gboolean help_dirs_stalled = TRUE; | |
| 868 | 58 |
| 1678 | 59 void free_help_dirs(void) |
| 60 { | |
| 61 GSList *hel; | |
| 62 | |
| 63 for (hel = help_dirs; hel; hel = hel->next) | |
| 64 g_free(hel->data); | |
| 65 | |
| 66 g_slist_free(help_dirs); | |
| 67 | |
| 68 help_dirs = NULL; | |
| 69 } | |
| 70 | |
| 71 void dir_push_languages(const char *langs, const char *dir) | |
| 72 { | |
| 73 const char *lstart = langs; | |
| 74 const char *lend; | |
| 75 char *path = expand_filename(dir); | |
| 76 | |
| 77 for (lend = strchr(lstart, ';'); lend; lend = strchr(lstart, ';')) { | |
| 78 char *lang = g_strndup(lstart, lend - lstart); | |
| 79 char *dir = g_strdup_printf("%s/%s", path, lang); | |
| 80 | |
| 81 help_dirs = g_slist_append(help_dirs, dir); | |
| 82 | |
| 83 g_free(lang); | |
| 84 lstart = lend + 1; | |
| 868 | 85 } |
| 1678 | 86 |
| 87 { // finishing element | |
| 88 char *dir = g_strdup_printf("%s/%s", path, lstart); | |
| 89 | |
| 90 help_dirs = g_slist_append(help_dirs, dir); | |
| 91 } | |
| 92 | |
| 93 g_free(path); | |
| 868 | 94 } |
| 95 | |
| 1678 | 96 void init_help_dirs(void) |
| 868 | 97 { |
| 1678 | 98 const char *paths; |
| 99 const char *langs; | |
| 100 char lang[6]; | |
| 101 | |
| 102 if (help_dirs) | |
| 103 free_help_dirs(); | |
| 104 | |
| 105 // initialize variables | |
| 106 paths = settings_opt_get("help_dirs"); | |
| 107 if (!paths || !*paths) | |
| 108 #ifdef DATA_DIR | |
| 109 paths = DATA_DIR "/mcabber/help"; | |
| 868 | 110 #else |
| 1678 | 111 paths = "/usr/local/share/mcabber/help;/usr/share/mcabber/help"; |
| 112 #endif | |
| 113 | |
| 114 langs = settings_opt_get("lang"); | |
| 115 | |
| 116 if (!langs || !*langs) { | |
| 117 char *locale = setlocale(LC_MESSAGES, NULL); | |
| 868 | 118 |
| 1678 | 119 // XXX crude method to distinguish between xx_XX xx xx@xxx |
| 120 // and C POSIX NULL etc. | |
| 121 if (locale && isalpha(locale[0]) && isalpha(locale[1]) | |
| 122 && !isalpha(locale[2])) { | |
| 123 lang[0] = locale[0]; | |
| 124 lang[1] = locale[1]; | |
| 125 | |
| 126 if (lang[0] == 'e' && lang[1] == 'n') | |
| 127 lang[2] = '\0'; | |
| 128 else { | |
| 129 lang[2] = ';'; | |
| 130 lang[3] = 'e'; | |
| 131 lang[4] = 'n'; | |
| 132 lang[5] = '\0'; | |
| 133 } | |
| 134 | |
| 135 langs = lang; | |
| 136 } else | |
| 137 langs = "en"; | |
| 868 | 138 } |
| 139 | |
| 1678 | 140 { // parse |
| 141 const char *pstart = paths; | |
| 142 const char *pend; | |
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143 |
| 1678 | 144 for (pend = strchr(pstart, ';'); pend; pend = strchr(pstart, ';')) { |
| 145 char *path = g_strndup(pstart, pend - pstart); | |
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146 |
| 1678 | 147 dir_push_languages(langs, path); |
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148 |
| 1678 | 149 g_free(path); |
| 150 pstart = pend + 1; | |
| 151 } | |
| 868 | 152 |
| 1678 | 153 // last element |
| 154 dir_push_languages(langs, pstart); | |
| 868 | 155 } |
| 156 | |
| 1678 | 157 help_dirs_stalled = FALSE; |
| 158 } | |
| 159 | |
| 160 static gboolean do_help_in_dir(const char *arg, const char *path, const char *jid) | |
| 161 { | |
| 162 char *fname; | |
| 163 GIOChannel *channel; | |
| 164 GString *line; | |
| 165 int lines = 0; | |
| 166 | |
| 167 if (arg && *arg) | |
| 168 fname = g_strdup_printf("%s/hlp_%s.txt", path, arg); | |
| 169 else | |
| 170 fname = g_strdup_printf("%s/hlp.txt", path); | |
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171 |
| 1678 | 172 channel = g_io_channel_new_file(fname, "r", NULL); |
| 173 | |
| 174 if (!channel) | |
| 175 return FALSE; | |
| 176 | |
| 177 line = g_string_new(NULL); | |
| 178 | |
| 179 while (TRUE) { | |
| 180 gsize endpos; | |
| 181 GIOStatus ret; | |
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182 |
| 1678 | 183 ret = g_io_channel_read_line_string(channel, line, &endpos, NULL); |
| 184 if (ret != G_IO_STATUS_NORMAL) // XXX G_IO_STATUS_AGAIN? | |
| 185 break; | |
| 186 | |
| 187 line->str[endpos] = '\0'; | |
| 188 | |
| 189 if (jid) | |
| 190 scr_WriteIncomingMessage(jid, line->str, 0, | |
| 191 HBB_PREFIX_INFO|HBB_PREFIX_NOFLAG, 0); | |
| 192 else | |
| 193 scr_LogPrint(LPRINT_NORMAL, "%s", line->str); | |
| 194 | |
| 195 ++lines; | |
| 868 | 196 } |
| 1678 | 197 |
| 198 g_string_free(line, TRUE); | |
| 868 | 199 |
| 1678 | 200 if (!lines) |
| 201 return FALSE; | |
| 202 | |
| 203 if (!jid) { | |
|
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204 scr_setmsgflag_if_needed(SPECIAL_BUFFER_STATUS_ID, TRUE); |
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205 scr_setattentionflag_if_needed(SPECIAL_BUFFER_STATUS_ID, TRUE, |
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206 ROSTER_UI_PRIO_STATUS_WIN_MESSAGE, prio_max); |
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207 } |
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208 |
| 1678 | 209 return TRUE; |
| 868 | 210 } |
| 211 | |
| 1678 | 212 void help_process(char *arg) |
| 213 { | |
| 214 gchar *string; | |
| 215 const char *jid = NULL; | |
| 216 gboolean done = FALSE; | |
| 217 | |
| 218 if (help_dirs_stalled) | |
| 219 init_help_dirs(); | |
| 220 | |
| 221 { // check input | |
| 222 char *c; | |
| 223 | |
| 224 for (c = arg; *c; ++c) | |
| 225 if (!isalnum(*c) && *c != '-' && *c != '_') { | |
| 226 scr_LogPrint(LPRINT_NORMAL, "Wrong help expression, " | |
| 227 "it can contain only alphbetic, numeric" | |
| 228 " characters and symbols '-' and '_'."); | |
| 229 return; | |
| 230 } | |
| 231 | |
| 232 string = g_strdup(arg); | |
| 233 mc_strtolower(string); | |
| 234 } | |
| 235 | |
| 236 if (settings_opt_get_int("help_to_current") && CURRENT_JID) | |
| 237 jid = CURRENT_JID; | |
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238 |
| 1678 | 239 { // search |
| 240 GSList *hel; | |
| 241 | |
| 242 for (hel = help_dirs; hel && !done; hel = hel->next) { | |
| 243 char *dir = (char *)hel->data; | |
| 244 done = do_help_in_dir(string, dir, jid); | |
| 245 } | |
| 246 } | |
| 247 | |
| 248 if (!done && string && *string) { // match and print any similar topics | |
| 249 GSList *hel; | |
| 250 GSList *matches = NULL; | |
| 251 | |
| 252 for (hel = help_dirs; hel; hel = hel->next) { | |
| 253 const char *path = (const char *)hel->data; | |
| 254 DIR *dd = opendir(path); | |
| 255 | |
| 256 if (dd) { | |
| 257 struct dirent *file; | |
| 258 | |
| 259 for (file = readdir(dd); file; file = readdir(dd)) { | |
| 260 const char *name = file->d_name; | |
| 261 | |
| 262 if (name && name[0] == 'h' && name[1] == 'l' && | |
| 263 name[2] == 'p' && name[3] == '_') { | |
| 264 const char *nstart = name + 4; | |
| 265 const char *nend = strrchr(nstart, '.'); | |
| 266 | |
| 267 if (nend) { | |
| 268 gsize len = nend - nstart; | |
| 269 | |
| 270 if (g_strstr_len(nstart, len, string)) { | |
| 271 gchar *match = g_strndup(nstart, len); | |
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272 |
| 1678 | 273 if (!g_slist_find_custom(matches, match, |
| 274 (GCompareFunc)strcmp)) | |
| 275 matches = g_slist_append(matches, match); | |
| 276 else | |
| 277 g_free(match); | |
| 278 | |
| 279 done = TRUE; | |
| 280 } | |
| 281 } | |
| 282 } | |
| 283 } | |
| 284 | |
| 285 closedir(dd); | |
| 286 } | |
| 287 } | |
| 288 | |
| 289 if (done) { | |
| 290 GString *message = g_string_new("No exact match found. " | |
| 291 "Keywords, that contain this word:"); | |
| 292 GSList *wel; | |
| 293 | |
| 294 for (wel = matches; wel; wel = wel->next) { | |
| 295 gchar *word = (gchar *)wel->data; | |
| 296 | |
| 297 g_string_append_printf(message, " %s,", word); | |
| 298 | |
| 299 g_free(wel->data); | |
| 300 } | |
| 301 | |
| 302 message->str[message->len - 1] = '.'; | |
| 303 | |
| 304 g_slist_free(matches); | |
| 305 | |
| 306 { | |
| 307 char *msg = g_string_free(message, FALSE); | |
| 308 | |
| 309 if (jid) | |
| 310 scr_WriteIncomingMessage(jid, msg, 0, | |
| 311 HBB_PREFIX_INFO|HBB_PREFIX_NOFLAG, 0); | |
| 312 else | |
| 313 scr_LogPrint(LPRINT_NORMAL, "%s", msg); | |
| 314 | |
| 315 g_free(msg); | |
| 316 } | |
| 317 } | |
| 318 } | |
| 319 | |
| 320 if (!done) { | |
| 321 if (jid) // XXX | |
| 322 scr_WriteIncomingMessage(jid, "No help found.", 0, | |
| 323 HBB_PREFIX_INFO|HBB_PREFIX_NOFLAG, 0); | |
| 324 else | |
| 325 scr_LogPrint(LPRINT_NORMAL, "No help found."); | |
| 326 } | |
| 327 | |
| 328 g_free(string); | |
| 329 } | |
| 330 | |
| 331 static gchar *help_guard(const gchar *key, const gchar *new_value) | |
| 332 { | |
| 333 help_dirs_stalled = TRUE; | |
| 334 return g_strdup(new_value); | |
| 335 } | |
| 336 | |
| 337 void help_init(void) | |
| 338 { | |
| 339 settings_set_guard("lang", help_guard); | |
| 340 settings_set_guard("help_dirs", help_guard); | |
| 341 } | |
| 342 | |
| 343 /* vim: set expandtab cindent cinoptions=>2\:2(0 sw=2 ts=2: For Vim users... */ |