Code

conf: improved error messages
[ncmpc.git] / src / conf.c
1 /*
2  * (c) 2004 by Kalle Wallin <kaw@linux.se>
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation; either version 2 of the License, or
7  * (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  * You should have received a copy of the GNU General Public License
14  * along with this program; if not, write to the Free Software
15  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
16  *
17  */
19 #include "conf.h"
20 #include "config.h"
21 #include "defaults.h"
22 #include "i18n.h"
23 #include "command.h"
24 #include "colors.h"
25 #include "screen_list.h"
27 #include <ctype.h>
28 #include <stdio.h>
29 #include <errno.h>
30 #include <stdlib.h>
31 #include <unistd.h>
32 #include <string.h>
33 #include <sys/types.h>
34 #include <sys/stat.h>
35 #include <fcntl.h>
36 #include <glib.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_AUTO_CENTER "auto-center"
44 #define CONF_WIDE_CURSOR "wide-cursor"
45 #define CONF_ENABLE_BELL "enable-bell"
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_XTERM_TITLE "set-xterm-title"
58 #define CONF_ENABLE_MOUSE "enable-mouse"
59 #define CONF_CROSSFADE_TIME "crossfade-time"
60 #define CONF_SEARCH_MODE "search-mode"
61 #define CONF_HIDE_CURSOR "hide-cursor"
62 #define CONF_SEEK_TIME "seek-time"
63 #define CONF_SCREEN_LIST "screen-list"
64 #define CONF_TIMEDISPLAY_TYPE "timedisplay-type"
65 #define CONF_HOST "host"
66 #define CONF_PORT "port"
67 #define CONF_PASSWORD "password"
68 #define CONF_LYRICS_TIMEOUT "lyrics-timeout"
69 #define CONF_SHOW_SPLASH "show-splash"
70 #define CONF_SCROLL "scroll"
71 #define CONF_SCROLL_SEP "scroll-sep"
72 #define CONF_VISIBLE_BITRATE "visible-bitrate"
73 #define CONF_WELCOME_SCREEN_LIST "welcome-screen-list"
75 static bool
76 str2bool(char *str)
77 {
78         return strcasecmp(str, "yes") == 0 || strcasecmp(str, "true") == 0 ||
79                 strcasecmp(str, "on") == 0 || strcasecmp(str, "1") == 0;
80 }
82 static void
83 print_error(const char *msg, const char *input)
84 {
85         fprintf(stderr, "%s: %s ('%s')\n",
86                 /* To translators: prefix for error messages */
87                 _("Error"), msg, input);
88 }
90 static int
91 parse_key_value(char *str, char **end)
92 {
93         if (*str == '\'') {
94                 if (str[1] == '\'' || str[2] != '\'') {
95                         print_error(_("Malformed hotkey definition"), str);
96                         return -1;
97                 }
99                 *end = str + 3;
100                 return str[1];
101         } else {
102                 long value = strtol(str, end, 0);
103                 if (*end == str) {
104                         print_error(_("Malformed hotkey definition"), str);
105                         return -1;
106                 }
108                 return (int)value;
109         }
112 static int
113 parse_key_definition(char *str)
115         char buf[MAX_LINE_LENGTH];
116         char *p;
117         size_t len = strlen(str), i;
118         int j,key;
119         int keys[MAX_COMMAND_KEYS];
120         command_t cmd;
122         /* get the command name */
123         i=0;
124         j=0;
125         memset(buf, 0, MAX_LINE_LENGTH);
126         while (i < len && str[i] != '=' && !g_ascii_isspace(str[i]))
127                 buf[j++] = str[i++];
128         if( (cmd=get_key_command_from_name(buf)) == CMD_NONE ) {
129                 print_error(_("Unknown command"), buf);
130                 return -1;
131         }
133         /* skip whitespace */
134         while (i < len && (str[i] == '=' || g_ascii_isspace(str[i])))
135                 i++;
137         /* get the value part */
138         memset(buf, 0, MAX_LINE_LENGTH);
139         g_strlcpy(buf, str+i, MAX_LINE_LENGTH);
140         if (*buf == 0) {
141                 print_error(_("Incomplete hotkey configuration"), str);
142                 return -1;
143         }
145         /* parse key values */
146         i = 0;
147         key = 0;
148         p = buf;
149         memset(keys, 0, sizeof(int)*MAX_COMMAND_KEYS);
150         while (i < MAX_COMMAND_KEYS && *p != 0 &&
151                (key = parse_key_value(p, &p)) >= 0) {
152                 keys[i++] = key;
153                 while (*p==',' || *p==' ' || *p=='\t')
154                         p++;
155         }
157         if (key < 0)
158                 return -1;
160         return assign_keys(cmd, keys);
163 static const char *
164 parse_timedisplay_type(const char *str)
166         if (!strcmp(str,"elapsed") || !strcmp(str,"remaining"))
167                 return str;
168         else {
169                 print_error(_("Bad time display type"), str);
170                 return DEFAULT_TIMEDISPLAY_TYPE;
171         }
174 #ifdef ENABLE_COLORS
175 static char *
176 separate_value(char *p)
178         char *value;
180         value = strchr(p, '=');
181         if (value == NULL) {
182                 fprintf(stderr, "%s\n", _("Missing '='"));
183                 return NULL;
184         }
186         *value++ = 0;
188         g_strchomp(p);
189         return g_strchug(value);
192 static int
193 parse_color(char *str)
195         char *value;
197         value = separate_value(str);
198         if (value == NULL)
199                 return -1;
201         return colors_assign(str, value);
204 /**
205  * Returns the first non-whitespace character after the next comma
206  * character, or the end of the string.  This is used to parse comma
207  * separated values.
208  */
209 static char *
210 after_comma(char *p)
212         char *comma = strchr(p, ',');
214         if (comma != NULL) {
215                 *comma++ = 0;
216                 comma = g_strchug(comma);
217         } else
218                 comma = p + strlen(p);
220         g_strchomp(p);
221         return comma;
224 static int
225 parse_color_definition(char *str)
227         char buf[MAX_LINE_LENGTH];
228         char *value;
229         short color, rgb[3];
231         value = separate_value(str);
232         if (value == NULL)
233                 return -1;
235         /* get the command name */
236         color = colors_str2color(str);
237         if (color < 0) {
238                 print_error(_("Bad color name"), buf);
239                 return -1;
240         }
242         /* parse r,g,b values */
244         for (unsigned i = 0; i < 3; ++i) {
245                 char *next = after_comma(value), *endptr;
246                 if (*value == 0) {
247                         print_error(_("Incomplete color definition"), str);
248                         return -1;
249                 }
251                 rgb[i] = strtol(value, &endptr, 0);
252                 if (endptr == value || *endptr != 0) {
253                         print_error(_("Invalid number"), value);
254                         return -1;
255                 }
257                 value = next;
258         }
260         if (*value != 0) {
261                 print_error(_("Malformed color definition"), str);
262                 return -1;
263         }
265         return colors_define(str, rgb[0], rgb[1], rgb[2]);
267 #endif
269 static char *
270 get_format(char *str)
272         gsize len = strlen(str);
274         if (str && str[0]=='\"' && str[len-1] == '\"') {
275                 str[len - 1] = '\0';
276                 str++;
277         }
279         return g_strdup(str);
282 static char **
283 check_screen_list(char *value)
285         char **tmp = g_strsplit_set(value, " \t,", 100);
286         char **screen = NULL;
287         int i,j;
289         i=0;
290         j=0;
291         while( tmp && tmp[i] ) {
292                 char *name = g_ascii_strdown(tmp[i], -1);
293                 if (screen_lookup_name(name) == NULL) {
294                         print_error(_("Unknown screen name"), name);
295                         free(name);
296                 } else {
297                         screen = g_realloc(screen, (j+2)*sizeof(char *));
298                         screen[j++] = name;
299                         screen[j] = NULL;
300                 }
301                 i++;
302         }
303         g_strfreev(tmp);
304         if( screen == NULL )
305                 return g_strsplit_set(DEFAULT_SCREEN_LIST, " ", 0);
307         return screen;
310 static bool
311 parse_line(char *line)
313         size_t len = strlen(line), i = 0, j;
314         char name[MAX_LINE_LENGTH];
315         char value[MAX_LINE_LENGTH];
316         bool match_found;
318         /* get the name part */
319         j = 0;
320         while (i < len && line[i] != '=' &&
321                !g_ascii_isspace(line[i])) {
322                 name[j++] = line[i++];
323         }
325         name[j] = '\0';
327         /* skip '=' and whitespace */
328         while (i < len && (line[i] == '=' || g_ascii_isspace(line[i])))
329                 i++;
331         /* get the value part */
332         j = 0;
333         while (i < len)
334                 value[j++] = line[i++];
335         value[j] = '\0';
337         match_found = true;
339         /* key definition */
340         if (!strcasecmp(CONF_KEY_DEFINITION, name))
341                 parse_key_definition(value);
342         /* enable colors */
343         else if(!strcasecmp(CONF_ENABLE_COLORS, name))
344 #ifdef ENABLE_COLORS
345                 options.enable_colors = str2bool(value);
346 #else
347         {}
348 #endif
349         /* auto center */
350         else if (!strcasecmp(CONF_AUTO_CENTER, name))
351                 options.auto_center = str2bool(value);
352         /* color assignment */
353         else if (!strcasecmp(CONF_COLOR, name))
354 #ifdef ENABLE_COLORS
355                 parse_color(value);
356 #else
357         {}
358 #endif
359         /* wide cursor */
360         else if (!strcasecmp(CONF_WIDE_CURSOR, name))
361                 options.wide_cursor = str2bool(value);
362         /* welcome screen list */
363         else if (!strcasecmp(CONF_WELCOME_SCREEN_LIST, name))
364                 options.welcome_screen_list = str2bool(value);
365         /* visible bitrate */
366         else if (!strcasecmp(CONF_VISIBLE_BITRATE, name))
367                 options.visible_bitrate = str2bool(value);
368         /* timer display type */
369         else if (!strcasecmp(CONF_TIMEDISPLAY_TYPE, name)) {
370                 g_free(options.timedisplay_type);
371                 options.timedisplay_type=g_strdup(parse_timedisplay_type(value));
372                 /* color definition */
373         } else if (!strcasecmp(CONF_COLOR_DEFINITION, name))
374 #ifdef ENABLE_COLORS
375                 parse_color_definition(value);
376 #else
377         {}
378 #endif
379         /* list format string */
380         else if (!strcasecmp(CONF_LIST_FORMAT, name)) {
381                 g_free(options.list_format);
382                 options.list_format = get_format(value);
383                 /* status format string */
384         } else if (!strcasecmp(CONF_STATUS_FORMAT, name)) {
385                 g_free(options.status_format);
386                 options.status_format = get_format(value);
387                 /* xterm title format string */
388         } else if (!strcasecmp(CONF_XTERM_TITLE_FORMAT, name)) {
389                 g_free(options.xterm_title_format);
390                 options.xterm_title_format = get_format(value);
391         } else if (!strcasecmp(CONF_LIST_WRAP, name))
392                 options.list_wrap = str2bool(value);
393         else if (!strcasecmp(CONF_FIND_WRAP, name))
394                 options.find_wrap = str2bool(value);
395         else if (!strcasecmp(CONF_FIND_SHOW_LAST,name))
396                 options.find_show_last_pattern = str2bool(value);
397         else if (!strcasecmp(CONF_AUDIBLE_BELL, name))
398                 options.audible_bell = str2bool(value);
399         else if (!strcasecmp(CONF_VISIBLE_BELL, name))
400                 options.visible_bell = str2bool(value);
401         else if (!strcasecmp(CONF_XTERM_TITLE, name))
402                 options.enable_xterm_title = str2bool(value);
403         else if (!strcasecmp(CONF_ENABLE_MOUSE, name))
404 #ifdef HAVE_GETMOUSE
405                 options.enable_mouse = str2bool(value);
406 #else
407         {}
408 #endif
409         else if (!strcasecmp(CONF_CROSSFADE_TIME, name))
410                 options.crossfade_time = atoi(value);
411         else if (!strcasecmp(CONF_SEARCH_MODE, name))
412                 options.search_mode = atoi(value);
413         else if (!strcasecmp(CONF_HIDE_CURSOR, name))
414                 options.hide_cursor = atoi(value);
415         else if (!strcasecmp(CONF_SEEK_TIME, name))
416                 options.seek_time = atoi(value);
417         else if (!strcasecmp(CONF_SCREEN_LIST, name)) {
418                 g_strfreev(options.screen_list);
419                 options.screen_list = check_screen_list(value);
420         } else if (!strcasecmp(CONF_SHOW_SPLASH, name)) {
421                 /* the splash screen was removed */
422         } else if (!strcasecmp(CONF_HOST, name))
423                 options.host = get_format(value);
424         else if (!strcasecmp(CONF_PORT, name))
425                 options.port = atoi(get_format(value));
426         else if (!strcasecmp(CONF_PASSWORD, name))
427                 options.password = get_format(value);
428         else if (!strcasecmp(CONF_LYRICS_TIMEOUT, name))
429 #ifdef ENABLE_LYRICS_SCREEN
430                 options.lyrics_timeout = atoi(get_format(value));
431 #else
432         {}
433 #endif
434         else if (!strcasecmp(CONF_SCROLL, name))
435                 options.scroll = str2bool(value);
436         else if (!strcasecmp(CONF_SCROLL_SEP, name)) {
437                 g_free(options.scroll_sep);
438                 options.scroll_sep = get_format(value);
439         } else
440                 match_found = false;
442         if (!match_found)
443                 print_error(_("Unknown configuration parameter"),
444                             name);
446         return match_found;
449 static int
450 read_rc_file(char *filename)
452         FILE *file;
453         char line[MAX_LINE_LENGTH];
455         if (filename == NULL)
456                 return -1;
458         file = fopen(filename, "r");
459         if (file == NULL) {
460                         perror(filename);
461                         return -1;
462                 }
464         while (fgets(line, sizeof(line), file) != NULL) {
465                 char *p = g_strchug(line);
467                 if (*p != 0 && *p != COMMENT_TOKEN)
468                         parse_line(g_strchomp(p));
469         }
471         fclose(file);
472         return 0;
475 int
476 check_user_conf_dir(void)
478         int retval;
479         char *directory = g_build_filename(g_get_home_dir(), "." PACKAGE, NULL);
481         if (g_file_test(directory, G_FILE_TEST_IS_DIR)) {
482                 g_free(directory);
483                 return 0;
484         }
486         retval = mkdir(directory, 0755);
487         g_free(directory);
488         return retval;
491 char *
492 get_user_key_binding_filename(void)
494         return g_build_filename(g_get_home_dir(), "." PACKAGE, "keys", NULL);
497 int
498 read_configuration(void)
500         char *filename = NULL;
502         /* check for command line configuration file */
503         if (options.config_file)
504                 filename = g_strdup(options.config_file);
506         /* check for user configuration ~/.ncmpc/config */
507         if (filename == NULL) {
508                 filename = g_build_filename(g_get_home_dir(),
509                                             "." PACKAGE, "config", NULL);
510                 if (!g_file_test(filename, G_FILE_TEST_IS_REGULAR)) {
511                         g_free(filename);
512                         filename = NULL;
513                 }
514         }
516         /* check for  global configuration SYSCONFDIR/ncmpc/config */
517         if (filename == NULL) {
518                 filename = g_build_filename(SYSCONFDIR, PACKAGE, "config", NULL);
519                 if (!g_file_test(filename, G_FILE_TEST_IS_REGULAR)) {
520                         g_free(filename);
521                         filename = NULL;
522                 }
523         }
525         /* load configuration */
526         if (filename) {
527                 read_rc_file(filename);
528                 g_free(filename);
529                 filename = NULL;
530         }
532         /* check for command line key binding file */
533         if (options.key_file)
534                 filename = g_strdup(options.key_file);
536         /* check for  user key bindings ~/.ncmpc/keys */
537         if (filename == NULL) {
538                 filename = get_user_key_binding_filename();
539                 if (!g_file_test(filename, G_FILE_TEST_IS_REGULAR)) {
540                         g_free(filename);
541                         filename = NULL;
542                 }
543         }
545         /* check for  global key bindings SYSCONFDIR/ncmpc/keys */
546         if (filename == NULL) {
547                 filename = g_build_filename(SYSCONFDIR, PACKAGE, "keys", NULL);
548                 if (!g_file_test(filename, G_FILE_TEST_IS_REGULAR)) {
549                         g_free(filename);
550                         filename = NULL;
551                 }
552         }
554         /* load key bindings */
555         if (filename) {
556                 read_rc_file(filename);
557                 g_free(filename);
558                 filename = NULL;
559         }
561         return 0;