5bb5fbadd7f20fd652706c211bbc9e42aeb250de
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 .port = DEFAULT_PORT,
53 .crossfade_time = DEFAULT_CROSSFADE_TIME,
54 .seek_time = 1,
55 #ifdef ENABLE_LYRICS_SCREEN
56 .lyrics_timeout = DEFAULT_LYRICS_TIMEOUT,
57 #endif
58 .find_wrap = true,
59 .wide_cursor = true,
60 .audible_bell = true,
61 #ifndef NCMPC_MINI
62 .scroll = DEFAULT_SCROLL,
63 .welcome_screen_list = true,
64 #endif
65 };
67 static const arg_opt_t option_table[] = {
68 { '?', "help", NULL, "Show this help message" },
69 { 'V', "version", NULL, "Display version information" },
70 { 'c', "colors", NULL, "Enable colors" },
71 { 'C', "no-colors", NULL, "Disable colors" },
72 #ifdef HAVE_GETMOUSE
73 { 'm', "mouse", NULL, "Enable mouse" },
74 { 'M', "no-mouse", NULL, "Disable mouse" },
75 #endif
76 { 'e', "exit", NULL, "Exit on connection errors" },
77 { 'p', "port", "PORT", "Connect to server on port [" DEFAULT_PORT_STR "]" },
78 { 'h', "host", "HOST", "Connect to server on host [" DEFAULT_HOST "]" },
79 { 'P', "password","PASSWORD", "Connect with password" },
80 { 'f', "config", "FILE", "Read configuration from file" },
81 { 'k', "key-file","FILE", "Read configuration from file" },
82 { 'S', "no-splash", NULL, "Don't show the splash screen" },
83 #ifndef NDEBUG
84 { 'K', "dump-keys", NULL, "Dump key bindings to stdout" },
85 #endif
86 };
88 static const unsigned option_table_size = sizeof(option_table) / sizeof(option_table[0]);
90 static const arg_opt_t *
91 lookup_option(int s, char *l)
92 {
93 unsigned i;
95 for (i = 0; i < option_table_size; ++i) {
96 if (l && strcmp(l, option_table[i].longopt) == 0)
97 return &option_table[i];;
98 if (s && s == option_table[i].shortopt)
99 return &option_table[i];;
100 }
102 return NULL;
103 }
105 static void
106 option_error(int error, const char *option, const char *arg)
107 {
108 switch (error) {
109 case ERROR_UNKNOWN_OPTION:
110 fprintf(stderr, PACKAGE ": invalid option %s\n", option);
111 break;
112 case ERROR_BAD_ARGUMENT:
113 fprintf(stderr, PACKAGE ": bad argument: %s\n", option);
114 break;
115 case ERROR_GOT_ARGUMENT:
116 fprintf(stderr, PACKAGE ": invalid option %s=%s\n", option, arg);
117 break;
118 case ERROR_MISSING_ARGUMENT:
119 fprintf(stderr, PACKAGE ": missing value for %s option\n", option);
120 break;
121 default:
122 fprintf(stderr, PACKAGE ": internal error %d\n", error);
123 break;
124 }
126 exit(EXIT_FAILURE);
127 }
129 static void
130 display_help(void)
131 {
132 unsigned i;
134 printf("Usage: %s [OPTION]...\n", PACKAGE);
136 for (i = 0; i < option_table_size; ++i) {
137 char tmp[MAX_LONGOPT_LENGTH];
139 if (option_table[i].argument)
140 g_snprintf(tmp, MAX_LONGOPT_LENGTH, "%s=%s",
141 option_table[i].longopt,
142 option_table[i].argument);
143 else
144 g_strlcpy(tmp, option_table[i].longopt, 64);
146 printf(" -%c, --%-20s %s\n",
147 option_table[i].shortopt,
148 tmp,
149 option_table[i].descrition);
150 i++;
151 }
152 }
154 static void
155 handle_option(int c, const char *arg)
156 {
157 switch (c) {
158 case '?': /* --help */
159 display_help();
160 exit(EXIT_SUCCESS);
161 case 'V': /* --version */
162 puts(PACKAGE " version: " VERSION "\n"
163 "build options:"
164 #ifdef NCMPC_MINI
165 " mini"
166 #endif
167 #ifndef NDEBUG
168 " debug"
169 #endif
170 #ifdef ENABLE_MULTIBYTE
171 " multibyte"
172 #endif
173 #ifdef ENABLE_WIDE
174 " wide"
175 #endif
176 #ifdef ENABLE_LOCALE
177 " locale"
178 #endif
179 #ifdef ENABLE_NLS
180 " nls"
181 #endif
182 #ifdef ENABLE_COLORS
183 " colors"
184 #else
185 " no-colors"
186 #endif
187 #ifdef ENABLE_LIRC
188 " lirc"
189 #endif
190 #ifdef HAVE_GETMOUSE
191 " getmouse"
192 #endif
193 #ifdef ENABLE_ARTIST_SCREEN
194 " artist-screen"
195 #endif
196 #ifdef ENABLE_HELP_SCREEN
197 " help-screen"
198 #endif
199 #ifdef ENABLE_SEARCH_SCREEN
200 " search-screen"
201 #endif
202 #ifdef ENABLE_SONG_SCREEN
203 " song-screen"
204 #endif
205 #ifdef ENABLE_KEYDEF_SCREEN
206 " key-screen"
207 #endif
208 #ifdef ENABLE_LYRICS_SCREEN
209 " lyrics-screen"
210 #endif
211 #ifdef ENABLE_OUTPUTS_SCREEN
212 " outputs-screen"
213 #endif
215 "\n");
216 #ifndef NCMPC_MINI
217 if (strcmp("translator-credits", _("translator-credits")) != 0)
218 /* To translators: these credits are shown
219 when ncmpc is started with "--version" */
220 printf("\n%s\n", _("translator-credits"));
221 #endif
222 exit(EXIT_SUCCESS);
223 case 'c': /* --colors */
224 #ifdef ENABLE_COLORS
225 options.enable_colors = true;
226 #endif
227 break;
228 case 'C': /* --no-colors */
229 #ifdef ENABLE_COLORS
230 options.enable_colors = false;
231 #endif
232 break;
233 case 'm': /* --mouse */
234 #ifdef HAVE_GETMOUSE
235 options.enable_mouse = true;
236 #endif
237 break;
238 case 'M': /* --no-mouse */
239 #ifdef HAVE_GETMOUSE
240 options.enable_mouse = false;
241 #endif
242 break;
243 case 'e': /* --exit */
244 /* deprecated */
245 break;
246 case 'p': /* --port */
247 options.port = atoi(arg);
248 break;
249 case 'h': /* --host */
250 if( options.host )
251 g_free(options.host);
252 options.host = g_strdup(arg);
253 break;
254 case 'P': /* --password */
255 if( options.password )
256 g_free(options.password);
257 options.password = locale_to_utf8(arg);
258 break;
259 case 'f': /* --config */
260 if( options.config_file )
261 g_free(options.config_file);
262 options.config_file = g_strdup(arg);
263 break;
264 case 'k': /* --key-file */
265 if( options.key_file )
266 g_free(options.key_file);
267 options.key_file = g_strdup(arg);
268 break;
269 case 'S': /* --key-file */
270 /* the splash screen was removed */
271 break;
272 #ifndef NDEBUG
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 default:
280 fprintf(stderr,"Unknown Option %c = %s\n", c, arg);
281 break;
282 }
283 }
285 void
286 options_parse(int argc, const char *argv[])
287 {
288 int i;
289 const arg_opt_t *opt = NULL;
290 option_callback_fn_t option_cb = handle_option;
292 i=1;
293 while (i < argc) {
294 const char *arg = argv[i];
295 size_t len = strlen(arg);
297 /* check for a long option */
298 if (g_str_has_prefix(arg, "--")) {
299 char *name, *value;
301 /* make shure we got an argument for the previous option */
302 if( opt && opt->argument )
303 option_error(ERROR_MISSING_ARGUMENT, opt->longopt, opt->argument);
305 /* retreive a option argument */
306 if ((value=g_strrstr(arg+2, "="))) {
307 *value = '\0';
308 name = g_strdup(arg);
309 *value = '=';
310 value++;
311 } else
312 name = g_strdup(arg);
314 /* check if the option exists */
315 if( (opt=lookup_option(0, name+2)) == NULL )
316 option_error(ERROR_UNKNOWN_OPTION, name, NULL);
317 g_free(name);
319 /* abort if we got an argument to the option and dont want one */
320 if( value && opt->argument==NULL )
321 option_error(ERROR_GOT_ARGUMENT, arg, value);
323 /* execute option callback */
324 if (value || opt->argument==NULL) {
325 option_cb (opt->shortopt, value);
326 opt = NULL;
327 }
328 }
329 /* check for short options */
330 else if (len>=2 && g_str_has_prefix(arg, "-")) {
331 size_t j;
333 for(j=1; j<len; j++) {
334 /* make shure we got an argument for the previous option */
335 if (opt && opt->argument)
336 option_error(ERROR_MISSING_ARGUMENT,
337 opt->longopt, opt->argument);
339 /* check if the option exists */
340 if ((opt=lookup_option(arg[j], NULL)) == NULL)
341 option_error(ERROR_UNKNOWN_OPTION, arg, NULL);
343 /* if no option argument is needed execute callback */
344 if (opt->argument == NULL) {
345 option_cb (opt->shortopt, NULL);
346 opt = NULL;
347 }
348 }
349 } else {
350 /* is this a option argument? */
351 if (opt && opt->argument) {
352 option_cb (opt->shortopt, arg);
353 opt = NULL;
354 } else
355 option_error(ERROR_BAD_ARGUMENT, arg, NULL);
356 }
357 i++;
358 }
360 if (opt && opt->argument == NULL)
361 option_cb (opt->shortopt, NULL);
362 else if (opt && opt->argument)
363 option_error(ERROR_MISSING_ARGUMENT, opt->longopt, opt->argument);
364 }
366 void
367 options_init(void)
368 {
369 const char *value;
370 char *tmp;
372 /* get initial values for host and password from MPD_HOST (enviroment) */
373 if ((value = g_getenv(MPD_HOST_ENV)))
374 options.host = g_strdup(value);
375 else
376 options.host = g_strdup(DEFAULT_HOST);
378 if ((tmp = g_strstr_len(options.host, strlen(options.host), "@"))) {
379 char *oldhost = options.host;
380 *tmp = '\0';
381 options.password = locale_to_utf8(oldhost);
382 options.host = g_strdup(tmp+1);
383 g_free(oldhost);
384 }
386 /* get initial values for port from MPD_PORT (enviroment) */
387 if ((value = g_getenv(MPD_PORT_ENV)))
388 options.port = atoi(value);
390 /* default option values */
391 options.list_format = g_strdup(DEFAULT_LIST_FORMAT);
392 options.status_format = g_strdup(DEFAULT_STATUS_FORMAT);
393 options.screen_list = g_strsplit_set(DEFAULT_SCREEN_LIST, " ", 0);
394 options.timedisplay_type = g_strdup(DEFAULT_TIMEDISPLAY_TYPE);
395 #ifndef NCMPC_MINI
396 options.scroll_sep = g_strdup(DEFAULT_SCROLL_SEP);
397 #endif
398 }