1 /* ncmpc (Ncurses MPD Client)
2 * (c) 2004-2009 The Music Player Daemon Project
3 * Project homepage: http://musicpd.org
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 "options.h"
21 #include "config.h"
22 #include "defaults.h"
23 #include "charset.h"
24 #include "command.h"
25 #include "conf.h"
26 #include "i18n.h"
28 #include <stdlib.h>
29 #include <stdio.h>
30 #include <string.h>
31 #include <glib.h>
33 #define MAX_LONGOPT_LENGTH 32
35 #define ERROR_UNKNOWN_OPTION 0x01
36 #define ERROR_BAD_ARGUMENT 0x02
37 #define ERROR_GOT_ARGUMENT 0x03
38 #define ERROR_MISSING_ARGUMENT 0x04
40 typedef struct {
41 int shortopt;
42 const char *longopt;
43 const char *argument;
44 const char *descrition;
45 } arg_opt_t;
48 typedef void (*option_callback_fn_t)(int c, const char *arg);
51 options_t options = {
52 .crossfade_time = DEFAULT_CROSSFADE_TIME,
53 .seek_time = 1,
54 #ifdef ENABLE_LYRICS_SCREEN
55 .lyrics_timeout = DEFAULT_LYRICS_TIMEOUT,
56 .lyrics_autosave = false,
57 #endif
58 .find_wrap = true,
59 .scroll_offset = 0,
60 .wide_cursor = true,
61 .audible_bell = true,
62 .bell_on_wrap = true,
63 .status_message_time = 3,
64 #ifndef NCMPC_MINI
65 .scroll = DEFAULT_SCROLL,
66 .welcome_screen_list = true,
67 .jump_prefix_only = true,
68 #endif
69 };
71 static const arg_opt_t option_table[] = {
72 { '?', "help", NULL, "Show this help message" },
73 { 'V', "version", NULL, "Display version information" },
74 { 'c', "colors", NULL, "Enable colors" },
75 { 'C', "no-colors", NULL, "Disable colors" },
76 #ifdef HAVE_GETMOUSE
77 { 'm', "mouse", NULL, "Enable mouse" },
78 { 'M', "no-mouse", NULL, "Disable mouse" },
79 #endif
80 { 'e', "exit", NULL, "Exit on connection errors" },
81 { 'p', "port", "PORT", "Connect to server on port" },
82 { 'h', "host", "HOST", "Connect to server on host" },
83 { 'P', "password","PASSWORD", "Connect with password" },
84 { 'f', "config", "FILE", "Read configuration from file" },
85 { 'k', "key-file","FILE", "Read configuration from file" },
86 { 'S', "no-splash", NULL, "Don't show the splash screen" },
87 #ifndef NDEBUG
88 { 'K', "dump-keys", NULL, "Dump key bindings to stdout" },
89 #endif
90 };
92 static const unsigned option_table_size = sizeof(option_table) / sizeof(option_table[0]);
94 static const arg_opt_t *
95 lookup_option(int s, char *l)
96 {
97 unsigned i;
99 for (i = 0; i < option_table_size; ++i) {
100 if (l && strcmp(l, option_table[i].longopt) == 0)
101 return &option_table[i];;
102 if (s && s == option_table[i].shortopt)
103 return &option_table[i];;
104 }
106 return NULL;
107 }
109 static void
110 option_error(int error, const char *option, const char *arg)
111 {
112 switch (error) {
113 case ERROR_UNKNOWN_OPTION:
114 fprintf(stderr, PACKAGE ": invalid option %s\n", option);
115 break;
116 case ERROR_BAD_ARGUMENT:
117 fprintf(stderr, PACKAGE ": bad argument: %s\n", option);
118 break;
119 case ERROR_GOT_ARGUMENT:
120 fprintf(stderr, PACKAGE ": invalid option %s=%s\n", option, arg);
121 break;
122 case ERROR_MISSING_ARGUMENT:
123 fprintf(stderr, PACKAGE ": missing value for %s option\n", option);
124 break;
125 default:
126 fprintf(stderr, PACKAGE ": internal error %d\n", error);
127 break;
128 }
130 exit(EXIT_FAILURE);
131 }
133 static void
134 display_help(void)
135 {
136 unsigned i;
138 printf("Usage: %s [OPTION]...\n", PACKAGE);
140 for (i = 0; i < option_table_size; ++i) {
141 char tmp[MAX_LONGOPT_LENGTH];
143 if (option_table[i].argument)
144 g_snprintf(tmp, MAX_LONGOPT_LENGTH, "%s=%s",
145 option_table[i].longopt,
146 option_table[i].argument);
147 else
148 g_strlcpy(tmp, option_table[i].longopt, 64);
150 printf(" -%c, --%-20s %s\n",
151 option_table[i].shortopt,
152 tmp,
153 option_table[i].descrition);
154 }
155 }
157 static void
158 handle_option(int c, const char *arg)
159 {
160 switch (c) {
161 case '?': /* --help */
162 display_help();
163 exit(EXIT_SUCCESS);
164 case 'V': /* --version */
165 puts(PACKAGE " version: " VERSION "\n"
166 "build options:"
167 #ifdef NCMPC_MINI
168 " mini"
169 #endif
170 #ifndef NDEBUG
171 " debug"
172 #endif
173 #ifdef ENABLE_MULTIBYTE
174 " multibyte"
175 #endif
176 #ifdef ENABLE_WIDE
177 " wide"
178 #endif
179 #ifdef ENABLE_LOCALE
180 " locale"
181 #endif
182 #ifdef ENABLE_NLS
183 " nls"
184 #endif
185 #ifdef ENABLE_COLORS
186 " colors"
187 #else
188 " no-colors"
189 #endif
190 #ifdef ENABLE_LIRC
191 " lirc"
192 #endif
193 #ifdef HAVE_GETMOUSE
194 " getmouse"
195 #endif
196 #ifdef ENABLE_ARTIST_SCREEN
197 " artist-screen"
198 #endif
199 #ifdef ENABLE_HELP_SCREEN
200 " help-screen"
201 #endif
202 #ifdef ENABLE_SEARCH_SCREEN
203 " search-screen"
204 #endif
205 #ifdef ENABLE_SONG_SCREEN
206 " song-screen"
207 #endif
208 #ifdef ENABLE_KEYDEF_SCREEN
209 " key-screen"
210 #endif
211 #ifdef ENABLE_LYRICS_SCREEN
212 " lyrics-screen"
213 #endif
214 #ifdef ENABLE_OUTPUTS_SCREEN
215 " outputs-screen"
216 #endif
218 "\n");
219 #ifndef NCMPC_MINI
220 if (strcmp("translator-credits", _("translator-credits")) != 0)
221 /* To translators: these credits are shown
222 when ncmpc is started with "--version" */
223 printf("\n%s\n", _("translator-credits"));
224 #endif
225 exit(EXIT_SUCCESS);
226 case 'c': /* --colors */
227 #ifdef ENABLE_COLORS
228 options.enable_colors = true;
229 #endif
230 break;
231 case 'C': /* --no-colors */
232 #ifdef ENABLE_COLORS
233 options.enable_colors = false;
234 #endif
235 break;
236 case 'm': /* --mouse */
237 #ifdef HAVE_GETMOUSE
238 options.enable_mouse = true;
239 #endif
240 break;
241 case 'M': /* --no-mouse */
242 #ifdef HAVE_GETMOUSE
243 options.enable_mouse = false;
244 #endif
245 break;
246 case 'e': /* --exit */
247 /* deprecated */
248 break;
249 case 'p': /* --port */
250 options.port = atoi(arg);
251 break;
252 case 'h': /* --host */
253 g_free(options.host);
254 options.host = g_strdup(arg);
255 break;
256 case 'P': /* --password */
257 g_free(options.password);
258 options.password = locale_to_utf8(arg);
259 break;
260 case 'f': /* --config */
261 g_free(options.config_file);
262 options.config_file = g_strdup(arg);
263 break;
264 case 'k': /* --key-file */
265 g_free(options.key_file);
266 options.key_file = g_strdup(arg);
267 break;
268 case 'S': /* --key-file */
269 /* the splash screen was removed */
270 break;
271 #ifndef NDEBUG
272 #ifndef NCMPC_MINI
273 case 'K': /* --dump-keys */
274 read_configuration();
275 write_key_bindings(stdout, KEYDEF_WRITE_ALL | KEYDEF_COMMENT_ALL);
276 exit(EXIT_SUCCESS);
277 break;
278 #endif
279 #endif
280 default:
281 fprintf(stderr,"Unknown Option %c = %s\n", c, arg);
282 break;
283 }
284 }
286 void
287 options_parse(int argc, const char *argv[])
288 {
289 int i;
290 const arg_opt_t *opt = NULL;
291 option_callback_fn_t option_cb = handle_option;
293 i=1;
294 while (i < argc) {
295 const char *arg = argv[i];
296 size_t len = strlen(arg);
298 /* check for a long option */
299 if (g_str_has_prefix(arg, "--")) {
300 char *name, *value;
302 /* make sure we got an argument for the previous option */
303 if( opt && opt->argument )
304 option_error(ERROR_MISSING_ARGUMENT, opt->longopt, opt->argument);
306 /* retrieve a option argument */
307 if ((value=g_strrstr(arg+2, "="))) {
308 *value = '\0';
309 name = g_strdup(arg);
310 *value = '=';
311 value++;
312 } else
313 name = g_strdup(arg);
315 /* check if the option exists */
316 if( (opt=lookup_option(0, name+2)) == NULL )
317 option_error(ERROR_UNKNOWN_OPTION, name, NULL);
318 g_free(name);
320 /* abort if we got an argument to the option and don't want one */
321 if( value && opt->argument==NULL )
322 option_error(ERROR_GOT_ARGUMENT, arg, value);
324 /* execute option callback */
325 if (value || opt->argument==NULL) {
326 option_cb (opt->shortopt, value);
327 opt = NULL;
328 }
329 }
330 /* check for short options */
331 else if (len>=2 && g_str_has_prefix(arg, "-")) {
332 size_t j;
334 for(j=1; j<len; j++) {
335 /* make sure we got an argument for the previous option */
336 if (opt && opt->argument)
337 option_error(ERROR_MISSING_ARGUMENT,
338 opt->longopt, opt->argument);
340 /* check if the option exists */
341 if ((opt=lookup_option(arg[j], NULL)) == NULL)
342 option_error(ERROR_UNKNOWN_OPTION, arg, NULL);
344 /* if no option argument is needed execute callback */
345 if (opt->argument == NULL) {
346 option_cb (opt->shortopt, NULL);
347 opt = NULL;
348 }
349 }
350 } else {
351 /* is this a option argument? */
352 if (opt && opt->argument) {
353 option_cb (opt->shortopt, arg);
354 opt = NULL;
355 } else
356 option_error(ERROR_BAD_ARGUMENT, arg, NULL);
357 }
358 i++;
359 }
361 if (opt && opt->argument == NULL)
362 option_cb (opt->shortopt, NULL);
363 else if (opt && opt->argument)
364 option_error(ERROR_MISSING_ARGUMENT, opt->longopt, opt->argument);
365 }
367 void
368 options_init(void)
369 {
370 /* default option values */
371 options.list_format = g_strdup(DEFAULT_LIST_FORMAT);
372 options.status_format = g_strdup(DEFAULT_STATUS_FORMAT);
373 options.screen_list = g_strsplit_set(DEFAULT_SCREEN_LIST, " ", 0);
374 #ifndef NCMPC_MINI
375 options.scroll_sep = g_strdup(DEFAULT_SCROLL_SEP);
376 #endif
377 }
379 void
380 options_deinit(void)
381 {
382 g_free(options.host);
383 g_free(options.username);
384 g_free(options.password);
385 g_free(options.config_file);
386 g_free(options.key_file);
387 g_free(options.list_format);
388 g_free(options.status_format);
389 g_strfreev(options.screen_list);
390 #ifndef NCMPC_MINI
391 g_free(options.xterm_title_format);
392 g_free(options.scroll_sep);
393 #endif
394 }