Code

conf: Allow descriptive search modes
[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_AUTO_CENTER "auto-center"
45 #define CONF_WIDE_CURSOR "wide-cursor"
46 #define CONF_KEY_DEFINITION "key"
47 #define CONF_COLOR "color"
48 #define CONF_COLOR_DEFINITION "colordef"
49 #define CONF_LIST_FORMAT "list-format"
50 #define CONF_STATUS_FORMAT "status-format"
51 #define CONF_XTERM_TITLE_FORMAT "xterm-title-format"
52 #define CONF_LIST_WRAP "wrap-around"
53 #define CONF_FIND_WRAP "find-wrap"
54 #define CONF_FIND_SHOW_LAST "find-show-last"
55 #define CONF_AUDIBLE_BELL "audible-bell"
56 #define CONF_VISIBLE_BELL "visible-bell"
57 #define CONF_BELL_ON_WRAP "bell-on-wrap"
58 #define CONF_STATUS_MESSAGE_TIME "status-message-time"
59 #define CONF_XTERM_TITLE "set-xterm-title"
60 #define CONF_ENABLE_MOUSE "enable-mouse"
61 #define CONF_CROSSFADE_TIME "crossfade-time"
62 #define CONF_SEARCH_MODE "search-mode"
63 #define CONF_HIDE_CURSOR "hide-cursor"
64 #define CONF_SEEK_TIME "seek-time"
65 #define CONF_SCREEN_LIST "screen-list"
66 #define CONF_TIMEDISPLAY_TYPE "timedisplay-type"
67 #define CONF_HOST "host"
68 #define CONF_PORT "port"
69 #define CONF_PASSWORD "password"
70 #define CONF_LYRICS_TIMEOUT "lyrics-timeout"
71 #define CONF_SHOW_SPLASH "show-splash"
72 #define CONF_SCROLL "scroll"
73 #define CONF_SCROLL_SEP "scroll-sep"
74 #define CONF_VISIBLE_BITRATE "visible-bitrate"
75 #define CONF_WELCOME_SCREEN_LIST "welcome-screen-list"
76 #define CONF_DISPLAY_TIME "display-time"
78 static bool
79 str2bool(char *str)
80 {
81         return strcasecmp(str, "yes") == 0 || strcasecmp(str, "true") == 0 ||
82                 strcasecmp(str, "on") == 0 || strcasecmp(str, "1") == 0;
83 }
85 static void
86 print_error(const char *msg, const char *input)
87 {
88         fprintf(stderr, "%s: %s ('%s')\n",
89                 /* To translators: prefix for error messages */
90                 _("Error"), msg, input);
91 }
93 static int
94 parse_key_value(char *str, char **end)
95 {
96         if (*str == '\'') {
97                 if (str[1] == '\'' || str[2] != '\'') {
98                         print_error(_("Malformed hotkey definition"), str);
99                         return -1;
100                 }
102                 *end = str + 3;
103                 return str[1];
104         } else {
105                 long value = strtol(str, end, 0);
106                 if (*end == str) {
107                         print_error(_("Malformed hotkey definition"), str);
108                         return -1;
109                 }
111                 return (int)value;
112         }
115 static int
116 parse_key_definition(char *str)
118         char buf[MAX_LINE_LENGTH];
119         char *p;
120         size_t len = strlen(str), i;
121         int j,key;
122         int keys[MAX_COMMAND_KEYS];
123         command_t cmd;
125         /* get the command name */
126         i=0;
127         j=0;
128         memset(buf, 0, MAX_LINE_LENGTH);
129         while (i < len && str[i] != '=' && !g_ascii_isspace(str[i]))
130                 buf[j++] = str[i++];
131         if( (cmd=get_key_command_from_name(buf)) == CMD_NONE ) {
132                 /* the hotkey configuration contains an unknown
133                    command */
134                 print_error(_("Unknown command"), buf);
135                 return -1;
136         }
138         /* skip whitespace */
139         while (i < len && (str[i] == '=' || g_ascii_isspace(str[i])))
140                 i++;
142         /* get the value part */
143         memset(buf, 0, MAX_LINE_LENGTH);
144         g_strlcpy(buf, str+i, MAX_LINE_LENGTH);
145         if (*buf == 0) {
146                 /* the hotkey configuration line is incomplete */
147                 print_error(_("Incomplete hotkey configuration"), str);
148                 return -1;
149         }
151         /* parse key values */
152         i = 0;
153         key = 0;
154         p = buf;
155         memset(keys, 0, sizeof(int)*MAX_COMMAND_KEYS);
156         while (i < MAX_COMMAND_KEYS && *p != 0 &&
157                (key = parse_key_value(p, &p)) >= 0) {
158                 keys[i++] = key;
159                 while (*p==',' || *p==' ' || *p=='\t')
160                         p++;
161         }
163         if (key < 0)
164                 return -1;
166         return assign_keys(cmd, keys);
169 static const char *
170 parse_timedisplay_type(const char *str)
172         if (!strcmp(str,"elapsed") || !strcmp(str,"remaining"))
173                 return str;
174         else {
175                 /* translators: ncmpc supports displaying the
176                    "elapsed" or "remaining" time of a song being
177                    played; in this case, the configuration file
178                    contained an invalid setting */
179                 print_error(_("Bad time display type"), str);
180                 return DEFAULT_TIMEDISPLAY_TYPE;
181         }
184 #ifdef ENABLE_COLORS
185 static char *
186 separate_value(char *p)
188         char *value;
190         value = strchr(p, '=');
191         if (value == NULL) {
192                 /* an equals sign '=' was expected while parsing a
193                    configuration file line */
194                 fprintf(stderr, "%s\n", _("Missing '='"));
195                 return NULL;
196         }
198         *value++ = 0;
200         g_strchomp(p);
201         return g_strchug(value);
204 static int
205 parse_color(char *str)
207         char *value;
209         value = separate_value(str);
210         if (value == NULL)
211                 return -1;
213         return colors_assign(str, value);
216 /**
217  * Returns the first non-whitespace character after the next comma
218  * character, or the end of the string.  This is used to parse comma
219  * separated values.
220  */
221 static char *
222 after_comma(char *p)
224         char *comma = strchr(p, ',');
226         if (comma != NULL) {
227                 *comma++ = 0;
228                 comma = g_strchug(comma);
229         } else
230                 comma = p + strlen(p);
232         g_strchomp(p);
233         return comma;
236 static int
237 parse_color_definition(char *str)
239         char buf[MAX_LINE_LENGTH];
240         char *value;
241         short color, rgb[3];
243         value = separate_value(str);
244         if (value == NULL)
245                 return -1;
247         /* get the command name */
248         color = colors_str2color(str);
249         if (color < 0) {
250                 print_error(_("Bad color name"), buf);
251                 return -1;
252         }
254         /* parse r,g,b values */
256         for (unsigned i = 0; i < 3; ++i) {
257                 char *next = after_comma(value), *endptr;
258                 if (*value == 0) {
259                         print_error(_("Incomplete color definition"), str);
260                         return -1;
261                 }
263                 rgb[i] = strtol(value, &endptr, 0);
264                 if (endptr == value || *endptr != 0) {
265                         print_error(_("Invalid number"), value);
266                         return -1;
267                 }
269                 value = next;
270         }
272         if (*value != 0) {
273                 print_error(_("Malformed color definition"), str);
274                 return -1;
275         }
277         return colors_define(str, rgb[0], rgb[1], rgb[2]);
279 #endif
281 static char *
282 get_format(char *str)
284         gsize len = strlen(str);
286         if (str && str[0]=='\"' && str[len-1] == '\"') {
287                 str[len - 1] = '\0';
288                 str++;
289         }
291         return g_strdup(str);
294 static char **
295 check_screen_list(char *value)
297         char **tmp = g_strsplit_set(value, " \t,", 100);
298         char **screen = NULL;
299         int i,j;
301         i=0;
302         j=0;
303         while( tmp && tmp[i] ) {
304                 char *name = g_ascii_strdown(tmp[i], -1);
305                 if (*name != '\0') {
306                         if (screen_lookup_name(name) == NULL) {
307                                 /* an unknown screen name was specified in the
308                                    configuration file */
309                                 print_error(_("Unknown screen name"), name);
310                                 free(name);
311                         } else {
312                                 screen = g_realloc(screen, (j+2)*sizeof(char *));
313                                 screen[j++] = name;
314                                 screen[j] = NULL;
315                         }
316                 }
317                 i++;
318         }
319         g_strfreev(tmp);
320         if( screen == NULL )
321                 return g_strsplit_set(DEFAULT_SCREEN_LIST, " ", 0);
323         return screen;
326 static int
327 get_search_mode(char *value)
329         char * test;
330         int mode;
331         mode= strtol(value, &test, 10);
332         if (*test == '\0')
333         {
334                 if (0 <= mode && mode <= 4)
335                         return mode;
336                 else
337                 {
338                         print_error(_("Invalid search mode"),value);
339                         return 0;
340                 }
341         }
342         else
343         {
344                 for (int i = 0; value[i] != '\0'; i++)
345                         value[i] = tolower(value[i]);
347                 // TODO: modify screen_search so that its own list of modes can be used
348                 // for comparison instead of specifying them here
349                 if (strcmp(value, "title") == 0)
350                         return 0;
351                 else if (strcmp(value, "artist") == 0)
352                         return 1;
353                 else if (strcmp(value, "album") == 0)
354                         return 2;
355                 else if (strcmp(value, "filename") == 0)
356                         return 3;
357                 else if (strcmp(value, "artist+album") == 0)
358                         return 4;
359                 else
360                 {
361                         print_error(_("Unknown search mode"),value);
362                         return 0;
363                 }
364         }
367 static bool
368 parse_line(char *line)
370         size_t len = strlen(line), i = 0, j;
371         char name[MAX_LINE_LENGTH];
372         char value[MAX_LINE_LENGTH];
373         bool match_found;
375         /* get the name part */
376         j = 0;
377         while (i < len && line[i] != '=' &&
378                !g_ascii_isspace(line[i])) {
379                 name[j++] = line[i++];
380         }
382         name[j] = '\0';
384         /* skip '=' and whitespace */
385         while (i < len && (line[i] == '=' || g_ascii_isspace(line[i])))
386                 i++;
388         /* get the value part */
389         j = 0;
390         while (i < len)
391                 value[j++] = line[i++];
392         value[j] = '\0';
394         match_found = true;
396         /* key definition */
397         if (!strcasecmp(CONF_KEY_DEFINITION, name))
398                 parse_key_definition(value);
399         /* enable colors */
400         else if(!strcasecmp(CONF_ENABLE_COLORS, name))
401 #ifdef ENABLE_COLORS
402                 options.enable_colors = str2bool(value);
403 #else
404         {}
405 #endif
406         /* auto center */
407         else if (!strcasecmp(CONF_AUTO_CENTER, name))
408                 options.auto_center = str2bool(value);
409         /* color assignment */
410         else if (!strcasecmp(CONF_COLOR, name))
411 #ifdef ENABLE_COLORS
412                 parse_color(value);
413 #else
414         {}
415 #endif
416         /* wide cursor */
417         else if (!strcasecmp(CONF_WIDE_CURSOR, name))
418                 options.wide_cursor = str2bool(value);
419         /* welcome screen list */
420         else if (!strcasecmp(CONF_WELCOME_SCREEN_LIST, name))
421                 options.welcome_screen_list = str2bool(value);
422         /* visible bitrate */
423         else if (!strcasecmp(CONF_VISIBLE_BITRATE, name))
424                 options.visible_bitrate = str2bool(value);
425         /* timer display type */
426         else if (!strcasecmp(CONF_TIMEDISPLAY_TYPE, name)) {
427                 g_free(options.timedisplay_type);
428                 options.timedisplay_type=g_strdup(parse_timedisplay_type(value));
429                 /* color definition */
430         } else if (!strcasecmp(CONF_COLOR_DEFINITION, name))
431 #ifdef ENABLE_COLORS
432                 parse_color_definition(value);
433 #else
434         {}
435 #endif
436         /* list format string */
437         else if (!strcasecmp(CONF_LIST_FORMAT, name)) {
438                 g_free(options.list_format);
439                 options.list_format = get_format(value);
440                 /* status format string */
441         } else if (!strcasecmp(CONF_STATUS_FORMAT, name)) {
442                 g_free(options.status_format);
443                 options.status_format = get_format(value);
444                 /* xterm title format string */
445         } else if (!strcasecmp(CONF_XTERM_TITLE_FORMAT, name)) {
446                 g_free(options.xterm_title_format);
447                 options.xterm_title_format = get_format(value);
448         } else if (!strcasecmp(CONF_LIST_WRAP, name))
449                 options.list_wrap = str2bool(value);
450         else if (!strcasecmp(CONF_FIND_WRAP, name))
451                 options.find_wrap = str2bool(value);
452         else if (!strcasecmp(CONF_FIND_SHOW_LAST,name))
453                 options.find_show_last_pattern = str2bool(value);
454         else if (!strcasecmp(CONF_AUDIBLE_BELL, name))
455                 options.audible_bell = str2bool(value);
456         else if (!strcasecmp(CONF_VISIBLE_BELL, name))
457                 options.visible_bell = str2bool(value);
458         else if (!strcasecmp(CONF_BELL_ON_WRAP, name))
459                 options.bell_on_wrap = str2bool(value);
460         else if (!strcasecmp(CONF_STATUS_MESSAGE_TIME, name))
461                 options.status_message_time = atoi(value);
462         else if (!strcasecmp(CONF_XTERM_TITLE, name))
463                 options.enable_xterm_title = str2bool(value);
464         else if (!strcasecmp(CONF_ENABLE_MOUSE, name))
465 #ifdef HAVE_GETMOUSE
466                 options.enable_mouse = str2bool(value);
467 #else
468         {}
469 #endif
470         else if (!strcasecmp(CONF_CROSSFADE_TIME, name))
471                 options.crossfade_time = atoi(value);
472         else if (!strcasecmp(CONF_SEARCH_MODE, name))
473                 options.search_mode = get_search_mode(value);
474         else if (!strcasecmp(CONF_HIDE_CURSOR, name))
475                 options.hide_cursor = atoi(value);
476         else if (!strcasecmp(CONF_SEEK_TIME, name))
477                 options.seek_time = atoi(value);
478         else if (!strcasecmp(CONF_SCREEN_LIST, name)) {
479                 g_strfreev(options.screen_list);
480                 options.screen_list = check_screen_list(value);
481         } else if (!strcasecmp(CONF_SHOW_SPLASH, name)) {
482                 /* the splash screen was removed */
483         } else if (!strcasecmp(CONF_HOST, name))
484                 options.host = get_format(value);
485         else if (!strcasecmp(CONF_PORT, name))
486                 options.port = atoi(get_format(value));
487         else if (!strcasecmp(CONF_PASSWORD, name))
488                 options.password = get_format(value);
489         else if (!strcasecmp(CONF_LYRICS_TIMEOUT, name))
490 #ifdef ENABLE_LYRICS_SCREEN
491                 options.lyrics_timeout = atoi(get_format(value));
492 #else
493         {}
494 #endif
495         else if (!strcasecmp(CONF_SCROLL, name))
496                 options.scroll = str2bool(value);
497         else if (!strcasecmp(CONF_SCROLL_SEP, name)) {
498                 g_free(options.scroll_sep);
499                 options.scroll_sep = get_format(value);
500         } else if (!strcasecmp(CONF_DISPLAY_TIME, name))
501 #ifdef NCMPC_MINI
502                 {}
503 #else
504                 options.display_time = str2bool(value);
505 #endif
506         else
507                 match_found = false;
509         if (!match_found)
510                 print_error(_("Unknown configuration parameter"),
511                             name);
513         return match_found;
516 static int
517 read_rc_file(char *filename)
519         FILE *file;
520         char line[MAX_LINE_LENGTH];
522         if (filename == NULL)
523                 return -1;
525         file = fopen(filename, "r");
526         if (file == NULL) {
527                         perror(filename);
528                         return -1;
529                 }
531         while (fgets(line, sizeof(line), file) != NULL) {
532                 char *p = g_strchug(line);
534                 if (*p != 0 && *p != COMMENT_TOKEN)
535                         parse_line(g_strchomp(p));
536         }
538         fclose(file);
539         return 0;
542 int
543 check_user_conf_dir(void)
545         int retval;
546         char *directory = g_build_filename(g_get_home_dir(), "." PACKAGE, NULL);
548         if (g_file_test(directory, G_FILE_TEST_IS_DIR)) {
549                 g_free(directory);
550                 return 0;
551         }
553         retval = mkdir(directory, 0755);
554         g_free(directory);
555         return retval;
558 char *
559 get_user_key_binding_filename(void)
561         return g_build_filename(g_get_home_dir(), "." PACKAGE, "keys", NULL);
564 int
565 read_configuration(void)
567         char *filename = NULL;
569         /* check for command line configuration file */
570         if (options.config_file)
571                 filename = g_strdup(options.config_file);
573         /* check for user configuration ~/.ncmpc/config */
574         if (filename == NULL) {
575                 filename = g_build_filename(g_get_home_dir(),
576                                             "." PACKAGE, "config", NULL);
577                 if (!g_file_test(filename, G_FILE_TEST_IS_REGULAR)) {
578                         g_free(filename);
579                         filename = NULL;
580                 }
581         }
583         /* check for  global configuration SYSCONFDIR/ncmpc/config */
584         if (filename == NULL) {
585                 filename = g_build_filename(SYSCONFDIR, PACKAGE, "config", NULL);
586                 if (!g_file_test(filename, G_FILE_TEST_IS_REGULAR)) {
587                         g_free(filename);
588                         filename = NULL;
589                 }
590         }
592         /* load configuration */
593         if (filename) {
594                 read_rc_file(filename);
595                 g_free(filename);
596                 filename = NULL;
597         }
599         /* check for command line key binding file */
600         if (options.key_file)
601                 filename = g_strdup(options.key_file);
603         /* check for  user key bindings ~/.ncmpc/keys */
604         if (filename == NULL) {
605                 filename = get_user_key_binding_filename();
606                 if (!g_file_test(filename, G_FILE_TEST_IS_REGULAR)) {
607                         g_free(filename);
608                         filename = NULL;
609                 }
610         }
612         /* check for  global key bindings SYSCONFDIR/ncmpc/keys */
613         if (filename == NULL) {
614                 filename = g_build_filename(SYSCONFDIR, PACKAGE, "keys", NULL);
615                 if (!g_file_test(filename, G_FILE_TEST_IS_REGULAR)) {
616                         g_free(filename);
617                         filename = NULL;
618                 }
619         }
621         /* load key bindings */
622         if (filename) {
623                 read_rc_file(filename);
624                 g_free(filename);
625                 filename = NULL;
626         }
628         return 0;