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[ncmpc.git] / src / conf.c
1 /* ncmpc (Ncurses MPD Client)
2  * (c) 2004-2009 The Music Player Daemon Project
3  * Project homepage: http://musicpd.org
4  
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
15  * You should have received a copy of the GNU General Public License along
16  * with this program; if not, write to the Free Software Foundation, Inc.,
17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
20 #include "conf.h"
21 #include "config.h"
22 #include "defaults.h"
23 #include "i18n.h"
24 #include "command.h"
25 #include "colors.h"
26 #include "screen_list.h"
28 #include <ctype.h>
29 #include <stdio.h>
30 #include <errno.h>
31 #include <stdlib.h>
32 #include <unistd.h>
33 #include <string.h>
34 #include <sys/types.h>
35 #include <sys/stat.h>
36 #include <fcntl.h>
37 #include <glib.h>
39 #define MAX_LINE_LENGTH 1024
40 #define COMMENT_TOKEN '#'
42 /* configuration field names */
43 #define CONF_ENABLE_COLORS "enable-colors"
44 #define CONF_SCROLL_OFFSET "scroll-offset"
45 #define CONF_AUTO_CENTER "auto-center"
46 #define CONF_WIDE_CURSOR "wide-cursor"
47 #define CONF_KEY_DEFINITION "key"
48 #define CONF_COLOR "color"
49 #define CONF_COLOR_DEFINITION "colordef"
50 #define CONF_LIST_FORMAT "list-format"
51 #define CONF_STATUS_FORMAT "status-format"
52 #define CONF_XTERM_TITLE_FORMAT "xterm-title-format"
53 #define CONF_LIST_WRAP "wrap-around"
54 #define CONF_FIND_WRAP "find-wrap"
55 #define CONF_FIND_SHOW_LAST "find-show-last"
56 #define CONF_AUDIBLE_BELL "audible-bell"
57 #define CONF_VISIBLE_BELL "visible-bell"
58 #define CONF_BELL_ON_WRAP "bell-on-wrap"
59 #define CONF_STATUS_MESSAGE_TIME "status-message-time"
60 #define CONF_XTERM_TITLE "set-xterm-title"
61 #define CONF_ENABLE_MOUSE "enable-mouse"
62 #define CONF_CROSSFADE_TIME "crossfade-time"
63 #define CONF_SEARCH_MODE "search-mode"
64 #define CONF_HIDE_CURSOR "hide-cursor"
65 #define CONF_SEEK_TIME "seek-time"
66 #define CONF_SCREEN_LIST "screen-list"
67 #define CONF_TIMEDISPLAY_TYPE "timedisplay-type"
68 #define CONF_HOST "host"
69 #define CONF_PORT "port"
70 #define CONF_PASSWORD "password"
71 #define CONF_LYRICS_TIMEOUT "lyrics-timeout"
72 #define CONF_SHOW_SPLASH "show-splash"
73 #define CONF_SCROLL "scroll"
74 #define CONF_SCROLL_SEP "scroll-sep"
75 #define CONF_VISIBLE_BITRATE "visible-bitrate"
76 #define CONF_WELCOME_SCREEN_LIST "welcome-screen-list"
77 #define CONF_DISPLAY_TIME "display-time"
78 #define CONF_JUMP_PREFIX_ONLY "jump-prefix-only"
79 #define CONF_LYRICS_AUTOSAVE "lyrics-autosave"
81 static bool
82 str2bool(char *str)
83 {
84         return strcasecmp(str, "yes") == 0 || strcasecmp(str, "true") == 0 ||
85                 strcasecmp(str, "on") == 0 || strcasecmp(str, "1") == 0;
86 }
88 static void
89 print_error(const char *msg, const char *input)
90 {
91         fprintf(stderr, "%s: %s ('%s')\n",
92                 /* To translators: prefix for error messages */
93                 _("Error"), msg, input);
94 }
96 static int
97 parse_key_value(char *str, char **end)
98 {
99         if (*str == '\'') {
100                 if (str[1] == '\'' || str[2] != '\'') {
101                         print_error(_("Malformed hotkey definition"), str);
102                         return -1;
103                 }
105                 *end = str + 3;
106                 return str[1];
107         } else {
108                 long value = strtol(str, end, 0);
109                 if (*end == str) {
110                         print_error(_("Malformed hotkey definition"), str);
111                         return -1;
112                 }
114                 return (int)value;
115         }
118 static int
119 parse_key_definition(char *str)
121         char buf[MAX_LINE_LENGTH];
122         char *p;
123         size_t len = strlen(str), i;
124         int j,key;
125         int keys[MAX_COMMAND_KEYS];
126         command_t cmd;
128         /* get the command name */
129         i=0;
130         j=0;
131         memset(buf, 0, MAX_LINE_LENGTH);
132         while (i < len && str[i] != '=' && !g_ascii_isspace(str[i]))
133                 buf[j++] = str[i++];
134         if( (cmd=get_key_command_from_name(buf)) == CMD_NONE ) {
135                 /* the hotkey configuration contains an unknown
136                    command */
137                 print_error(_("Unknown command"), buf);
138                 return -1;
139         }
141         /* skip whitespace */
142         while (i < len && (str[i] == '=' || g_ascii_isspace(str[i])))
143                 i++;
145         /* get the value part */
146         memset(buf, 0, MAX_LINE_LENGTH);
147         g_strlcpy(buf, str+i, MAX_LINE_LENGTH);
148         if (*buf == 0) {
149                 /* the hotkey configuration line is incomplete */
150                 print_error(_("Incomplete hotkey configuration"), str);
151                 return -1;
152         }
154         /* parse key values */
155         i = 0;
156         key = 0;
157         p = buf;
158         memset(keys, 0, sizeof(int)*MAX_COMMAND_KEYS);
159         while (i < MAX_COMMAND_KEYS && *p != 0 &&
160                (key = parse_key_value(p, &p)) >= 0) {
161                 keys[i++] = key;
162                 while (*p==',' || *p==' ' || *p=='\t')
163                         p++;
164         }
166         if (key < 0)
167                 return -1;
169         return assign_keys(cmd, keys);
172 static const char *
173 parse_timedisplay_type(const char *str)
175         if (!strcmp(str,"elapsed") || !strcmp(str,"remaining"))
176                 return str;
177         else {
178                 /* translators: ncmpc supports displaying the
179                    "elapsed" or "remaining" time of a song being
180                    played; in this case, the configuration file
181                    contained an invalid setting */
182                 print_error(_("Bad time display type"), str);
183                 return DEFAULT_TIMEDISPLAY_TYPE;
184         }
187 #ifdef ENABLE_COLORS
188 static char *
189 separate_value(char *p)
191         char *value;
193         value = strchr(p, '=');
194         if (value == NULL) {
195                 /* an equals sign '=' was expected while parsing a
196                    configuration file line */
197                 fprintf(stderr, "%s\n", _("Missing '='"));
198                 return NULL;
199         }
201         *value++ = 0;
203         g_strchomp(p);
204         return g_strchug(value);
207 static int
208 parse_color(char *str)
210         char *value;
212         value = separate_value(str);
213         if (value == NULL)
214                 return -1;
216         return colors_assign(str, value);
219 /**
220  * Returns the first non-whitespace character after the next comma
221  * character, or the end of the string.  This is used to parse comma
222  * separated values.
223  */
224 static char *
225 after_comma(char *p)
227         char *comma = strchr(p, ',');
229         if (comma != NULL) {
230                 *comma++ = 0;
231                 comma = g_strchug(comma);
232         } else
233                 comma = p + strlen(p);
235         g_strchomp(p);
236         return comma;
239 static int
240 parse_color_definition(char *str)
242         char buf[MAX_LINE_LENGTH];
243         char *value;
244         short color, rgb[3];
246         value = separate_value(str);
247         if (value == NULL)
248                 return -1;
250         /* get the command name */
251         color = colors_str2color(str);
252         if (color < 0) {
253                 print_error(_("Bad color name"), buf);
254                 return -1;
255         }
257         /* parse r,g,b values */
259         for (unsigned i = 0; i < 3; ++i) {
260                 char *next = after_comma(value), *endptr;
261                 if (*value == 0) {
262                         print_error(_("Incomplete color definition"), str);
263                         return -1;
264                 }
266                 rgb[i] = strtol(value, &endptr, 0);
267                 if (endptr == value || *endptr != 0) {
268                         print_error(_("Invalid number"), value);
269                         return -1;
270                 }
272                 value = next;
273         }
275         if (*value != 0) {
276                 print_error(_("Malformed color definition"), str);
277                 return -1;
278         }
280         return colors_define(str, rgb[0], rgb[1], rgb[2]);
282 #endif
284 static char *
285 get_format(char *str)
287         gsize len = strlen(str);
289         if (str && str[0]=='\"' && str[len-1] == '\"') {
290                 str[len - 1] = '\0';
291                 str++;
292         }
294         return g_strdup(str);
297 static char **
298 check_screen_list(char *value)
300         char **tmp = g_strsplit_set(value, " \t,", 100);
301         char **screen = NULL;
302         int i,j;
304         i=0;
305         j=0;
306         while( tmp && tmp[i] ) {
307                 char *name = g_ascii_strdown(tmp[i], -1);
308                 if (*name != '\0') {
309                         if (screen_lookup_name(name) == NULL) {
310                                 /* an unknown screen name was specified in the
311                                    configuration file */
312                                 print_error(_("Unknown screen name"), name);
313                                 free(name);
314                         } else {
315                                 screen = g_realloc(screen, (j+2)*sizeof(char *));
316                                 screen[j++] = name;
317                                 screen[j] = NULL;
318                         }
319                 }
320                 i++;
321         }
322         g_strfreev(tmp);
323         if( screen == NULL )
324                 return g_strsplit_set(DEFAULT_SCREEN_LIST, " ", 0);
326         return screen;
329 static int
330 get_search_mode(char *value)
332         char * test;
333         int mode;
334         mode= strtol(value, &test, 10);
335         if (*test == '\0')
336         {
337                 if (0 <= mode && mode <= 4)
338                         return mode;
339                 else
340                 {
341                         print_error(_("Invalid search mode"),value);
342                         return 0;
343                 }
344         }
345         else
346         {
347                 for (int i = 0; value[i] != '\0'; i++)
348                         value[i] = tolower(value[i]);
350                 // TODO: modify screen_search so that its own list of modes can be used
351                 // for comparison instead of specifying them here
352                 if (strcmp(value, "title") == 0)
353                         return 0;
354                 else if (strcmp(value, "artist") == 0)
355                         return 1;
356                 else if (strcmp(value, "album") == 0)
357                         return 2;
358                 else if (strcmp(value, "filename") == 0)
359                         return 3;
360                 else if (strcmp(value, "artist+album") == 0)
361                         return 4;
362                 else
363                 {
364                         print_error(_("Unknown search mode"),value);
365                         return 0;
366                 }
367         }
370 static bool
371 parse_line(char *line)
373         size_t len = strlen(line), i = 0, j;
374         char name[MAX_LINE_LENGTH];
375         char value[MAX_LINE_LENGTH];
376         bool match_found;
378         /* get the name part */
379         j = 0;
380         while (i < len && line[i] != '=' &&
381                !g_ascii_isspace(line[i])) {
382                 name[j++] = line[i++];
383         }
385         name[j] = '\0';
387         /* skip '=' and whitespace */
388         while (i < len && (line[i] == '=' || g_ascii_isspace(line[i])))
389                 i++;
391         /* get the value part */
392         j = 0;
393         while (i < len)
394                 value[j++] = line[i++];
395         value[j] = '\0';
397         match_found = true;
399         /* key definition */
400         if (!strcasecmp(CONF_KEY_DEFINITION, name))
401                 parse_key_definition(value);
402         /* enable colors */
403         else if(!strcasecmp(CONF_ENABLE_COLORS, name))
404 #ifdef ENABLE_COLORS
405                 options.enable_colors = str2bool(value);
406 #else
407         {}
408 #endif
409         else if (!strcasecmp(CONF_SCROLL_OFFSET, name))
410                 options.scroll_offset = atoi(value);
411         /* auto center */
412         else if (!strcasecmp(CONF_AUTO_CENTER, name))
413                 options.auto_center = str2bool(value);
414         /* color assignment */
415         else if (!strcasecmp(CONF_COLOR, name))
416 #ifdef ENABLE_COLORS
417                 parse_color(value);
418 #else
419         {}
420 #endif
421         /* wide cursor */
422         else if (!strcasecmp(CONF_WIDE_CURSOR, name))
423                 options.wide_cursor = str2bool(value);
424         else if (strcasecmp(name, "hardware-cursor") == 0)
425                 options.hardware_cursor = str2bool(value);
426         /* welcome screen list */
427         else if (!strcasecmp(CONF_WELCOME_SCREEN_LIST, name))
428                 options.welcome_screen_list = str2bool(value);
429         /* visible bitrate */
430         else if (!strcasecmp(CONF_VISIBLE_BITRATE, name))
431                 options.visible_bitrate = str2bool(value);
432         /* timer display type */
433         else if (!strcasecmp(CONF_TIMEDISPLAY_TYPE, name)) {
434                 g_free(options.timedisplay_type);
435                 options.timedisplay_type=g_strdup(parse_timedisplay_type(value));
436                 /* color definition */
437         } else if (!strcasecmp(CONF_COLOR_DEFINITION, name))
438 #ifdef ENABLE_COLORS
439                 parse_color_definition(value);
440 #else
441         {}
442 #endif
443         /* list format string */
444         else if (!strcasecmp(CONF_LIST_FORMAT, name)) {
445                 g_free(options.list_format);
446                 options.list_format = get_format(value);
447                 /* status format string */
448         } else if (!strcasecmp(CONF_STATUS_FORMAT, name)) {
449                 g_free(options.status_format);
450                 options.status_format = get_format(value);
451                 /* xterm title format string */
452         } else if (!strcasecmp(CONF_XTERM_TITLE_FORMAT, name)) {
453                 g_free(options.xterm_title_format);
454                 options.xterm_title_format = get_format(value);
455         } else if (!strcasecmp(CONF_LIST_WRAP, name))
456                 options.list_wrap = str2bool(value);
457         else if (!strcasecmp(CONF_FIND_WRAP, name))
458                 options.find_wrap = str2bool(value);
459         else if (!strcasecmp(CONF_FIND_SHOW_LAST,name))
460                 options.find_show_last_pattern = str2bool(value);
461         else if (!strcasecmp(CONF_AUDIBLE_BELL, name))
462                 options.audible_bell = str2bool(value);
463         else if (!strcasecmp(CONF_VISIBLE_BELL, name))
464                 options.visible_bell = str2bool(value);
465         else if (!strcasecmp(CONF_BELL_ON_WRAP, name))
466                 options.bell_on_wrap = str2bool(value);
467         else if (!strcasecmp(CONF_STATUS_MESSAGE_TIME, name))
468                 options.status_message_time = atoi(value);
469         else if (!strcasecmp(CONF_XTERM_TITLE, name))
470                 options.enable_xterm_title = str2bool(value);
471         else if (!strcasecmp(CONF_ENABLE_MOUSE, name))
472 #ifdef HAVE_GETMOUSE
473                 options.enable_mouse = str2bool(value);
474 #else
475         {}
476 #endif
477         else if (!strcasecmp(CONF_CROSSFADE_TIME, name))
478                 options.crossfade_time = atoi(value);
479         else if (!strcasecmp(CONF_SEARCH_MODE, name))
480                 options.search_mode = get_search_mode(value);
481         else if (!strcasecmp(CONF_HIDE_CURSOR, name))
482                 options.hide_cursor = atoi(value);
483         else if (!strcasecmp(CONF_SEEK_TIME, name))
484                 options.seek_time = atoi(value);
485         else if (!strcasecmp(CONF_SCREEN_LIST, name)) {
486                 g_strfreev(options.screen_list);
487                 options.screen_list = check_screen_list(value);
488         } else if (!strcasecmp(CONF_SHOW_SPLASH, name)) {
489                 /* the splash screen was removed */
490         } else if (!strcasecmp(CONF_HOST, name))
491                 options.host = get_format(value);
492         else if (!strcasecmp(CONF_PORT, name))
493                 options.port = atoi(get_format(value));
494         else if (!strcasecmp(CONF_PASSWORD, name))
495                 options.password = get_format(value);
496         else if (!strcasecmp(CONF_LYRICS_TIMEOUT, name))
497 #ifdef ENABLE_LYRICS_SCREEN
498                 options.lyrics_timeout = atoi(get_format(value));
499 #else
500         {}
501 #endif
502         else if (!strcasecmp(CONF_SCROLL, name))
503                 options.scroll = str2bool(value);
504         else if (!strcasecmp(CONF_SCROLL_SEP, name)) {
505                 g_free(options.scroll_sep);
506                 options.scroll_sep = get_format(value);
507         } else if (!strcasecmp(CONF_DISPLAY_TIME, name))
508 #ifdef NCMPC_MINI
509                 {}
510 #else
511                 options.display_time = str2bool(value);
512 #endif
513         else if (!strcasecmp(CONF_JUMP_PREFIX_ONLY, name))
514 #ifdef NCMPC_MINI
515                 {}
516 #else
517                 options.jump_prefix_only = str2bool(value);
518 #endif
519         else if (!strcasecmp(CONF_LYRICS_AUTOSAVE, name))
520 #ifdef ENABLE_LYRICS_SCREEN
521                 options.lyrics_autosave = str2bool(value);
522 #else
523         {}
524 #endif
525         else
526                 match_found = false;
528         if (!match_found)
529                 print_error(_("Unknown configuration parameter"),
530                             name);
532         return match_found;
535 static int
536 read_rc_file(char *filename)
538         FILE *file;
539         char line[MAX_LINE_LENGTH];
541         if (filename == NULL)
542                 return -1;
544         file = fopen(filename, "r");
545         if (file == NULL) {
546                         perror(filename);
547                         return -1;
548                 }
550         while (fgets(line, sizeof(line), file) != NULL) {
551                 char *p = g_strchug(line);
553                 if (*p != 0 && *p != COMMENT_TOKEN)
554                         parse_line(g_strchomp(p));
555         }
557         fclose(file);
558         return 0;
561 int
562 check_user_conf_dir(void)
564         int retval;
565         char *directory = g_build_filename(g_get_home_dir(), "." PACKAGE, NULL);
567         if (g_file_test(directory, G_FILE_TEST_IS_DIR)) {
568                 g_free(directory);
569                 return 0;
570         }
572         retval = mkdir(directory, 0755);
573         g_free(directory);
574         return retval;
577 char *
578 get_user_key_binding_filename(void)
580         return g_build_filename(g_get_home_dir(), "." PACKAGE, "keys", NULL);
583 int
584 read_configuration(void)
586         char *filename = NULL;
588         /* check for command line configuration file */
589         if (options.config_file)
590                 filename = g_strdup(options.config_file);
592         /* check for user configuration ~/.ncmpc/config */
593         if (filename == NULL) {
594                 filename = g_build_filename(g_get_home_dir(),
595                                             "." PACKAGE, "config", NULL);
596                 if (!g_file_test(filename, G_FILE_TEST_IS_REGULAR)) {
597                         g_free(filename);
598                         filename = NULL;
599                 }
600         }
602         /* check for  global configuration SYSCONFDIR/ncmpc/config */
603         if (filename == NULL) {
604                 filename = g_build_filename(SYSCONFDIR, PACKAGE, "config", NULL);
605                 if (!g_file_test(filename, G_FILE_TEST_IS_REGULAR)) {
606                         g_free(filename);
607                         filename = NULL;
608                 }
609         }
611         /* load configuration */
612         if (filename) {
613                 read_rc_file(filename);
614                 g_free(filename);
615                 filename = NULL;
616         }
618         /* check for command line key binding file */
619         if (options.key_file)
620                 filename = g_strdup(options.key_file);
622         /* check for  user key bindings ~/.ncmpc/keys */
623         if (filename == NULL) {
624                 filename = get_user_key_binding_filename();
625                 if (!g_file_test(filename, G_FILE_TEST_IS_REGULAR)) {
626                         g_free(filename);
627                         filename = NULL;
628                 }
629         }
631         /* check for  global key bindings SYSCONFDIR/ncmpc/keys */
632         if (filename == NULL) {
633                 filename = g_build_filename(SYSCONFDIR, PACKAGE, "keys", NULL);
634                 if (!g_file_test(filename, G_FILE_TEST_IS_REGULAR)) {
635                         g_free(filename);
636                         filename = NULL;
637                 }
638         }
640         /* load key bindings */
641         if (filename) {
642                 read_rc_file(filename);
643                 g_free(filename);
644                 filename = NULL;
645         }
647         return 0;