Code

conf: eliminate local variable "match_found"
[ncmpc.git] / src / conf.c
1 /* ncmpc (Ncurses MPD Client)
2  * (c) 2004-2010 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.
9  *
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.
14  *
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 <fcntl.h>
35 #include <glib.h>
36 #include <glib/gstdio.h>
38 #define MAX_LINE_LENGTH 1024
39 #define COMMENT_TOKEN '#'
41 /* configuration field names */
42 #define CONF_ENABLE_COLORS "enable-colors"
43 #define CONF_SCROLL_OFFSET "scroll-offset"
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_TIMEOUT "timeout"
71 #define CONF_LYRICS_TIMEOUT "lyrics-timeout"
72 #define CONF_SCROLL "scroll"
73 #define CONF_SCROLL_SEP "scroll-sep"
74 #define CONF_VISIBLE_BITRATE "visible-bitrate"
75 #define CONF_HARDWARE_CURSOR "hardware-cursor"
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"
80 #define CONF_LYRICS_SHOW_PLUGIN "lyrics-show-plugin"
81 #define CONF_TEXT_EDITOR "text-editor"
82 #define CONF_TEXT_EDITOR_ASK "text-editor-ask"
83 #define CONF_CHAT_PREFIX "chat-prefix"
84 #define CONF_SECOND_COLUMN "second-column"
86 static bool
87 str2bool(char *str)
88 {
89         return strcasecmp(str, "yes") == 0 || strcasecmp(str, "true") == 0 ||
90                 strcasecmp(str, "on") == 0 || strcasecmp(str, "1") == 0;
91 }
93 static void
94 print_error(const char *msg, const char *input)
95 {
96         fprintf(stderr, "%s: %s ('%s')\n",
97                 /* To translators: prefix for error messages */
98                 _("Error"), msg, input);
99 }
101 static int
102 parse_key_value(char *str, char **end)
104         if (*str == '\'') {
105                 if (str[1] == '\'' || str[2] != '\'') {
106                         print_error(_("Malformed hotkey definition"), str);
107                         return -1;
108                 }
110                 *end = str + 3;
111                 return str[1];
112         } else {
113                 long value = strtol(str, end, 0);
114                 if (*end == str) {
115                         print_error(_("Malformed hotkey definition"), str);
116                         return -1;
117                 }
119                 return (int)value;
120         }
123 static int
124 parse_key_definition(char *str)
126         char buf[MAX_LINE_LENGTH];
127         char *p;
128         size_t len = strlen(str), i;
129         int j,key;
130         int keys[MAX_COMMAND_KEYS];
131         command_t cmd;
133         /* get the command name */
134         i=0;
135         j=0;
136         memset(buf, 0, MAX_LINE_LENGTH);
137         while (i < len && str[i] != '=' && !g_ascii_isspace(str[i]))
138                 buf[j++] = str[i++];
139         if( (cmd=get_key_command_from_name(buf)) == CMD_NONE ) {
140                 /* the hotkey configuration contains an unknown
141                    command */
142                 print_error(_("Unknown command"), buf);
143                 return -1;
144         }
146         /* skip whitespace */
147         while (i < len && (str[i] == '=' || g_ascii_isspace(str[i])))
148                 i++;
150         /* get the value part */
151         memset(buf, 0, MAX_LINE_LENGTH);
152         g_strlcpy(buf, str+i, MAX_LINE_LENGTH);
153         if (*buf == 0) {
154                 /* the hotkey configuration line is incomplete */
155                 print_error(_("Incomplete hotkey configuration"), str);
156                 return -1;
157         }
159         /* parse key values */
160         i = 0;
161         key = 0;
162         p = buf;
163         memset(keys, 0, sizeof(int)*MAX_COMMAND_KEYS);
164         while (i < MAX_COMMAND_KEYS && *p != 0 &&
165                (key = parse_key_value(p, &p)) >= 0) {
166                 keys[i++] = key;
167                 while (*p==',' || *p==' ' || *p=='\t')
168                         p++;
169         }
171         if (key < 0)
172                 return -1;
174         return assign_keys(cmd, keys);
177 static bool
178 parse_timedisplay_type(const char *str)
180         if (strcmp(str, "elapsed") == 0)
181                 return false;
182         else if (strcmp(str, "remaining") == 0)
183                 return true;
184         else {
185                 /* translators: ncmpc supports displaying the
186                    "elapsed" or "remaining" time of a song being
187                    played; in this case, the configuration file
188                    contained an invalid setting */
189                 print_error(_("Bad time display type"), str);
190                 return false;
191         }
194 #ifdef ENABLE_COLORS
195 static char *
196 separate_value(char *p)
198         char *value;
200         value = strchr(p, '=');
201         if (value == NULL) {
202                 /* an equals sign '=' was expected while parsing a
203                    configuration file line */
204                 fprintf(stderr, "%s\n", _("Missing '='"));
205                 return NULL;
206         }
208         *value++ = 0;
210         g_strchomp(p);
211         return g_strchug(value);
214 static int
215 parse_color(char *str)
217         char *value;
219         value = separate_value(str);
220         if (value == NULL)
221                 return -1;
223         return colors_assign(str, value);
226 /**
227  * Returns the first non-whitespace character after the next comma
228  * character, or the end of the string.  This is used to parse comma
229  * separated values.
230  */
231 static char *
232 after_comma(char *p)
234         char *comma = strchr(p, ',');
236         if (comma != NULL) {
237                 *comma++ = 0;
238                 comma = g_strchug(comma);
239         } else
240                 comma = p + strlen(p);
242         g_strchomp(p);
243         return comma;
246 static int
247 parse_color_definition(char *str)
249         char buf[MAX_LINE_LENGTH];
250         char *value;
251         short color, rgb[3];
253         value = separate_value(str);
254         if (value == NULL)
255                 return -1;
257         /* get the command name */
258         color = colors_str2color(str);
259         if (color < 0) {
260                 print_error(_("Bad color name"), buf);
261                 return -1;
262         }
264         /* parse r,g,b values */
266         for (unsigned i = 0; i < 3; ++i) {
267                 char *next = after_comma(value), *endptr;
268                 if (*value == 0) {
269                         print_error(_("Incomplete color definition"), str);
270                         return -1;
271                 }
273                 rgb[i] = strtol(value, &endptr, 0);
274                 if (endptr == value || *endptr != 0) {
275                         print_error(_("Invalid number"), value);
276                         return -1;
277                 }
279                 value = next;
280         }
282         if (*value != 0) {
283                 print_error(_("Malformed color definition"), str);
284                 return -1;
285         }
287         return colors_define(str, rgb[0], rgb[1], rgb[2]);
289 #endif
291 static char *
292 get_format(char *str)
294         gsize len = strlen(str);
296         if (str && str[0]=='\"' && str[len-1] == '\"') {
297                 str[len - 1] = '\0';
298                 str++;
299         }
301         return g_strdup(str);
304 static char **
305 check_screen_list(char *value)
307         char **tmp = g_strsplit_set(value, " \t,", 100);
308         char **screen = NULL;
309         int i = 0, j = 0;
311         while( tmp && tmp[i] ) {
312                 char *name = g_ascii_strdown(tmp[i], -1);
313                 if (*name != '\0') {
314                         if (screen_lookup_name(name) == NULL) {
315                                 /* an unknown screen name was specified in the
316                                    configuration file */
317                                 print_error(_("Unknown screen name"), name);
318                                 free(name);
319                         } else {
320                                 screen = g_realloc(screen, (j+2)*sizeof(char *));
321                                 screen[j++] = name;
322                                 screen[j] = NULL;
323                         }
324                 }
325                 i++;
326         }
327         g_strfreev(tmp);
328         if( screen == NULL )
329                 return g_strsplit_set(DEFAULT_SCREEN_LIST, " ", 0);
331         return screen;
334 static int
335 get_search_mode(char *value)
337         char * test;
338         int mode;
339         mode= strtol(value, &test, 10);
340         if (*test == '\0')
341         {
342                 if (0 <= mode && mode <= 4)
343                         return mode;
344                 else
345                 {
346                         print_error(_("Invalid search mode"),value);
347                         return 0;
348                 }
349         }
350         else
351         {
352                 for (int i = 0; value[i] != '\0'; i++)
353                         value[i] = tolower(value[i]);
355                 // TODO: modify screen_search so that its own list of modes can be used
356                 // for comparison instead of specifying them here
357                 if (strcmp(value, "title") == 0)
358                         return 0;
359                 else if (strcmp(value, "artist") == 0)
360                         return 1;
361                 else if (strcmp(value, "album") == 0)
362                         return 2;
363                 else if (strcmp(value, "filename") == 0)
364                         return 3;
365                 else if (strcmp(value, "artist+album") == 0)
366                         return 4;
367                 else
368                 {
369                         print_error(_("Unknown search mode"),value);
370                         return 0;
371                 }
372         }
375 static bool
376 parse_line(char *line)
378         size_t len = strlen(line), i = 0, j = 0;
379         char name[MAX_LINE_LENGTH];
380         char value[MAX_LINE_LENGTH];
382         /* get the name part */
383         while (i < len && line[i] != '=' && !g_ascii_isspace(line[i]))
384                 name[j++] = line[i++];
386         name[j] = '\0';
388         /* skip '=' and whitespace */
389         while (i < len && (line[i] == '=' || g_ascii_isspace(line[i])))
390                 i++;
392         /* get the value part */
393         j = 0;
394         while (i < len)
395                 value[j++] = line[i++];
396         value[j] = '\0';
398         /* key definition */
399         if (!strcasecmp(CONF_KEY_DEFINITION, name))
400                 parse_key_definition(value);
401         /* enable colors */
402         else if(!strcasecmp(CONF_ENABLE_COLORS, name))
403 #ifdef ENABLE_COLORS
404                 options.enable_colors = str2bool(value);
405 #else
406         {}
407 #endif
408         else if (!strcasecmp(CONF_SCROLL_OFFSET, name))
409                 options.scroll_offset = atoi(value);
410         /* auto center */
411         else if (!strcasecmp(CONF_AUTO_CENTER, name))
412                 options.auto_center = str2bool(value);
413         /* color assignment */
414         else if (!strcasecmp(CONF_COLOR, name))
415 #ifdef ENABLE_COLORS
416                 parse_color(value);
417 #else
418         {}
419 #endif
420         /* wide cursor */
421         else if (!strcasecmp(CONF_WIDE_CURSOR, name))
422                 options.wide_cursor = str2bool(value);
423         else if (strcasecmp(name, CONF_HARDWARE_CURSOR) == 0)
424                 options.hardware_cursor = str2bool(value);
425         /* welcome screen list */
426         else if (!strcasecmp(CONF_WELCOME_SCREEN_LIST, name))
427                 options.welcome_screen_list = str2bool(value);
428         /* visible bitrate */
429         else if (!strcasecmp(CONF_VISIBLE_BITRATE, name))
430                 options.visible_bitrate = str2bool(value);
431         /* timer display type */
432         else if (!strcasecmp(CONF_TIMEDISPLAY_TYPE, name))
433                 options.display_remaining_time = parse_timedisplay_type(value);
434                 /* color definition */
435         else if (!strcasecmp(CONF_COLOR_DEFINITION, name))
436 #ifdef ENABLE_COLORS
437                 parse_color_definition(value);
438 #else
439         {}
440 #endif
441         /* list format string */
442         else if (!strcasecmp(CONF_LIST_FORMAT, name)) {
443                 g_free(options.list_format);
444                 options.list_format = get_format(value);
445                 /* status format string */
446         } else if (!strcasecmp(CONF_STATUS_FORMAT, name)) {
447                 g_free(options.status_format);
448                 options.status_format = get_format(value);
449                 /* xterm title format string */
450         } else if (!strcasecmp(CONF_XTERM_TITLE_FORMAT, name)) {
451                 g_free(options.xterm_title_format);
452                 options.xterm_title_format = get_format(value);
453         } else if (!strcasecmp(CONF_LIST_WRAP, name))
454                 options.list_wrap = str2bool(value);
455         else if (!strcasecmp(CONF_FIND_WRAP, name))
456                 options.find_wrap = str2bool(value);
457         else if (!strcasecmp(CONF_FIND_SHOW_LAST,name))
458                 options.find_show_last_pattern = str2bool(value);
459         else if (!strcasecmp(CONF_AUDIBLE_BELL, name))
460                 options.audible_bell = str2bool(value);
461         else if (!strcasecmp(CONF_VISIBLE_BELL, name))
462                 options.visible_bell = str2bool(value);
463         else if (!strcasecmp(CONF_BELL_ON_WRAP, name))
464                 options.bell_on_wrap = str2bool(value);
465         else if (!strcasecmp(CONF_STATUS_MESSAGE_TIME, name))
466                 options.status_message_time = atoi(value);
467         else if (!strcasecmp(CONF_XTERM_TITLE, name))
468                 options.enable_xterm_title = str2bool(value);
469         else if (!strcasecmp(CONF_ENABLE_MOUSE, name))
470 #ifdef HAVE_GETMOUSE
471                 options.enable_mouse = str2bool(value);
472 #else
473         {}
474 #endif
475         else if (!strcasecmp(CONF_CROSSFADE_TIME, name))
476                 options.crossfade_time = atoi(value);
477         else if (!strcasecmp(CONF_SEARCH_MODE, name))
478                 options.search_mode = get_search_mode(value);
479         else if (!strcasecmp(CONF_HIDE_CURSOR, name))
480                 options.hide_cursor = atoi(value);
481         else if (!strcasecmp(CONF_SEEK_TIME, name))
482                 options.seek_time = atoi(value);
483         else if (!strcasecmp(CONF_SCREEN_LIST, name)) {
484                 g_strfreev(options.screen_list);
485                 options.screen_list = check_screen_list(value);
486         } else if (!strcasecmp(CONF_HOST, name))
487                 options.host = get_format(value);
488         else if (!strcasecmp(CONF_PORT, name))
489                 options.port = atoi(get_format(value));
490         else if (!strcasecmp(CONF_PASSWORD, name))
491                 options.password = get_format(value);
492         else if (!strcasecmp(CONF_TIMEOUT, name))
493                 options.timeout_ms = atoi(get_format(value))
494                                      * 1000 /* seconds -> milliseconds */;
495         else if (!strcasecmp(CONF_LYRICS_TIMEOUT, name))
496 #ifdef ENABLE_LYRICS_SCREEN
497                 options.lyrics_timeout = atoi(get_format(value));
498 #else
499         {}
500 #endif
501         else if (!strcasecmp(CONF_SCROLL, name))
502                 options.scroll = str2bool(value);
503         else if (!strcasecmp(CONF_SCROLL_SEP, name)) {
504                 g_free(options.scroll_sep);
505                 options.scroll_sep = get_format(value);
506         } else if (!strcasecmp(CONF_DISPLAY_TIME, name))
507 #ifdef NCMPC_MINI
508                 {}
509 #else
510                 options.display_time = str2bool(value);
511 #endif
512         else if (!strcasecmp(CONF_JUMP_PREFIX_ONLY, name))
513 #ifdef NCMPC_MINI
514                 {}
515 #else
516                 options.jump_prefix_only = str2bool(value);
517 #endif
518         else if (!strcasecmp(CONF_LYRICS_AUTOSAVE, name))
519 #ifdef ENABLE_LYRICS_SCREEN
520                 options.lyrics_autosave = str2bool(value);
521 #else
522         {}
523 #endif
524         else if (!strcasecmp(CONF_LYRICS_SHOW_PLUGIN, name))
525 #ifdef ENABLE_LYRICS_SCREEN
526                 options.lyrics_show_plugin = str2bool(value);
527 #else
528                 {}
529 #endif
530         else if (!strcasecmp(name, CONF_TEXT_EDITOR))
531 #ifdef ENABLE_LYRICS_SCREEN
532                 {
533                         g_free(options.text_editor);
534                         options.text_editor = get_format(value);
535                 }
536 #else
537                 {}
538 #endif
539         else if (!strcasecmp(name, CONF_TEXT_EDITOR_ASK))
540 #ifdef ENABLE_LYRICS_SCREEN
541                 options.text_editor_ask = str2bool(value);
542 #else
543                 {}
544 #endif
545         else if (!strcasecmp(name, CONF_CHAT_PREFIX))
546 #ifdef ENABLE_CHAT_SCREEN
547                 options.chat_prefix = get_format(value);
548 #else
549                 {}
550 #endif
551         else if (!strcasecmp(CONF_SECOND_COLUMN, name))
552 #ifdef NCMPC_MINI
553                 {}
554 #else
555                 options.second_column = str2bool(value);
556 #endif
557         else {
558                 print_error(_("Unknown configuration parameter"), name);
559                 return false;
560         }
562         return true;
565 static int
566 read_rc_file(char *filename)
568         FILE *file;
569         char line[MAX_LINE_LENGTH];
571         if (filename == NULL)
572                 return -1;
574         file = fopen(filename, "r");
575         if (file == NULL) {
576                         perror(filename);
577                         return -1;
578                 }
580         while (fgets(line, sizeof(line), file) != NULL) {
581                 char *p = g_strchug(line);
583                 if (*p != 0 && *p != COMMENT_TOKEN)
584                         parse_line(g_strchomp(p));
585         }
587         fclose(file);
588         return 0;
591 int
592 check_user_conf_dir(void)
594         int retval;
595         char *directory = g_build_filename(g_get_home_dir(), "." PACKAGE, NULL);
597         if (g_file_test(directory, G_FILE_TEST_IS_DIR)) {
598                 g_free(directory);
599                 return 0;
600         }
602         retval = g_mkdir(directory, 0755);
603         g_free(directory);
604         return retval;
607 char *
608 build_user_conf_filename(void)
610 #ifdef WIN32
611         return g_build_filename(g_get_user_config_dir(), PACKAGE, "ncmpc.conf", NULL);
612 #else
613         return g_build_filename(g_get_home_dir(), "." PACKAGE, "config", NULL);
614 #endif
617 char *
618 build_system_conf_filename(void)
620 #ifdef WIN32
621         const gchar* const *system_data_dirs;
622         gchar *pathname = NULL;
624         for (system_data_dirs = g_get_system_config_dirs (); *system_data_dirs != NULL; system_data_dirs++)
625         {
626                 g_message (*system_data_dirs);
627                 pathname = g_build_filename(*system_data_dirs, PACKAGE, "ncmpc.conf", NULL);
628                 if (g_file_test(pathname, G_FILE_TEST_EXISTS))
629                 {
630                         break;
631                 }
632                 else
633                 {
634                         g_free (pathname);
635                         pathname = NULL;
636                 }
637         }
638         return pathname;
639 #else
640         return g_build_filename(SYSCONFDIR, PACKAGE, "config", NULL);
641 #endif
644 char *
645 build_user_key_binding_filename(void)
647 #ifdef WIN32
648         return g_build_filename(g_get_user_config_dir(), PACKAGE, "keys.conf", NULL);
649 #else
650         return g_build_filename(g_get_home_dir(), "." PACKAGE, "keys", NULL);
651 #endif
654 static char *
655 g_build_system_key_binding_filename(void)
657 #ifdef WIN32
658         const gchar* const *system_data_dirs;
659         gchar *pathname = NULL;
661         for (system_data_dirs = g_get_system_config_dirs (); *system_data_dirs != NULL; system_data_dirs++)
662         {
663                 g_message (*system_data_dirs);
664                 pathname = g_build_filename(*system_data_dirs, PACKAGE, "keys.conf", NULL);
665                 if (g_file_test(pathname, G_FILE_TEST_EXISTS))
666                 {
667                         break;
668                 }
669                 else
670                 {
671                         g_free (pathname);
672                         pathname = NULL;
673                 }
674         }
675         return pathname;
676 #else
677         return g_build_filename(SYSCONFDIR, PACKAGE, "keys", NULL);
678 #endif
681 void
682 read_configuration(void)
684         char *filename = NULL;
686         /* check for command line configuration file */
687         if (options.config_file)
688                 filename = g_strdup(options.config_file);
690         /* check for user configuration ~/.ncmpc/config */
691         if (filename == NULL) {
692                 filename = build_user_conf_filename();
693                 if (!g_file_test(filename, G_FILE_TEST_IS_REGULAR)) {
694                         g_free(filename);
695                         filename = NULL;
696                 }
697         }
699         /* check for  global configuration SYSCONFDIR/ncmpc/config */
700         if (filename == NULL) {
701                 filename = build_system_conf_filename();
702                 if (!g_file_test(filename, G_FILE_TEST_IS_REGULAR)) {
703                         g_free(filename);
704                         filename = NULL;
705                 }
706         }
708         /* load configuration */
709         if (filename) {
710                 read_rc_file(filename);
711                 g_free(filename);
712                 filename = NULL;
713         }
715         /* check for command line key binding file */
716         if (options.key_file)
717                 filename = g_strdup(options.key_file);
719         /* check for  user key bindings ~/.ncmpc/keys */
720         if (filename == NULL) {
721                 filename = build_user_key_binding_filename();
722                 if (!g_file_test(filename, G_FILE_TEST_IS_REGULAR)) {
723                         g_free(filename);
724                         filename = NULL;
725                 }
726         }
728         /* check for  global key bindings SYSCONFDIR/ncmpc/keys */
729         if (filename == NULL) {
730                 filename = g_build_system_key_binding_filename();
731                 if (!g_file_test(filename, G_FILE_TEST_IS_REGULAR)) {
732                         g_free(filename);
733                         filename = NULL;
734                 }
735         }
737         /* load key bindings */
738         if (filename) {
739                 read_rc_file(filename);
740                 g_free(filename);
741                 filename = NULL;
742         }