7c82f7cefccba74739783ef895f8741621931b70
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 "options.h"
20 #include "config.h"
21 #include "defaults.h"
22 #include "charset.h"
23 #include "command.h"
24 #include "conf.h"
25 #include "i18n.h"
27 #include <stdlib.h>
28 #include <stdio.h>
29 #include <string.h>
30 #include <glib.h>
32 #define MAX_LONGOPT_LENGTH 32
34 #define ERROR_UNKNOWN_OPTION 0x01
35 #define ERROR_BAD_ARGUMENT 0x02
36 #define ERROR_GOT_ARGUMENT 0x03
37 #define ERROR_MISSING_ARGUMENT 0x04
39 typedef struct {
40 int shortopt;
41 const char *longopt;
42 const char *argument;
43 const char *descrition;
44 } arg_opt_t;
47 typedef void (*option_callback_fn_t)(int c, const char *arg);
50 options_t options = {
51 .port = DEFAULT_PORT,
52 .crossfade_time = DEFAULT_CROSSFADE_TIME,
53 .seek_time = 1,
54 #ifdef ENABLE_LYRICS_SCREEN
55 .lyrics_timeout = DEFAULT_LYRICS_TIMEOUT,
56 #endif
57 .find_wrap = true,
58 .wide_cursor = true,
59 .audible_bell = true,
60 #ifndef NCMPC_MINI
61 .scroll = DEFAULT_SCROLL,
62 .welcome_screen_list = true,
63 #endif
64 };
66 static const arg_opt_t option_table[] = {
67 { '?', "help", NULL, "Show this help message" },
68 { 'V', "version", NULL, "Display version information" },
69 { 'c', "colors", NULL, "Enable colors" },
70 { 'C', "no-colors", NULL, "Disable colors" },
71 #ifdef HAVE_GETMOUSE
72 { 'm', "mouse", NULL, "Enable mouse" },
73 { 'M', "no-mouse", NULL, "Disable mouse" },
74 #endif
75 { 'e', "exit", NULL, "Exit on connection errors" },
76 { 'p', "port", "PORT", "Connect to server on port [" DEFAULT_PORT_STR "]" },
77 { 'h', "host", "HOST", "Connect to server on host [" DEFAULT_HOST "]" },
78 { 'P', "password","PASSWORD", "Connect with password" },
79 { 'f', "config", "FILE", "Read configuration from file" },
80 { 'k', "key-file","FILE", "Read configuration from file" },
81 { 'S', "no-splash", NULL, "Don't show the splash screen" },
82 #ifndef NDEBUG
83 { 'K', "dump-keys", NULL, "Dump key bindings to stdout" },
84 #endif
85 };
87 static const unsigned option_table_size = sizeof(option_table) / sizeof(option_table[0]);
89 static const arg_opt_t *
90 lookup_option(int s, char *l)
91 {
92 unsigned i;
94 for (i = 0; i < option_table_size; ++i) {
95 if (l && strcmp(l, option_table[i].longopt) == 0)
96 return &option_table[i];;
97 if (s && s == option_table[i].shortopt)
98 return &option_table[i];;
99 }
101 return NULL;
102 }
104 static void
105 option_error(int error, const char *option, const char *arg)
106 {
107 switch (error) {
108 case ERROR_UNKNOWN_OPTION:
109 fprintf(stderr, PACKAGE ": invalid option %s\n", option);
110 break;
111 case ERROR_BAD_ARGUMENT:
112 fprintf(stderr, PACKAGE ": bad argument: %s\n", option);
113 break;
114 case ERROR_GOT_ARGUMENT:
115 fprintf(stderr, PACKAGE ": invalid option %s=%s\n", option, arg);
116 break;
117 case ERROR_MISSING_ARGUMENT:
118 fprintf(stderr, PACKAGE ": missing value for %s option\n", option);
119 break;
120 default:
121 fprintf(stderr, PACKAGE ": internal error %d\n", error);
122 break;
123 }
125 exit(EXIT_FAILURE);
126 }
128 static void
129 display_help(void)
130 {
131 unsigned i;
133 printf("Usage: %s [OPTION]...\n", PACKAGE);
135 for (i = 0; i < option_table_size; ++i) {
136 char tmp[MAX_LONGOPT_LENGTH];
138 if (option_table[i].argument)
139 g_snprintf(tmp, MAX_LONGOPT_LENGTH, "%s=%s",
140 option_table[i].longopt,
141 option_table[i].argument);
142 else
143 g_strlcpy(tmp, option_table[i].longopt, 64);
145 printf(" -%c, --%-20s %s\n",
146 option_table[i].shortopt,
147 tmp,
148 option_table[i].descrition);
149 i++;
150 }
151 }
153 static void
154 handle_option(int c, const char *arg)
155 {
156 switch (c) {
157 case '?': /* --help */
158 display_help();
159 exit(EXIT_SUCCESS);
160 case 'V': /* --version */
161 puts(PACKAGE " version: " VERSION "\n"
162 "build options:"
163 #ifdef NCMPC_MINI
164 " mini"
165 #endif
166 #ifndef NDEBUG
167 " debug"
168 #endif
169 #ifdef ENABLE_WIDE
170 " wide"
171 #endif
172 #ifdef ENABLE_LOCALE
173 " locale"
174 #endif
175 #ifdef ENABLE_NLS
176 " nls"
177 #endif
178 #ifdef ENABLE_COLORS
179 " colors"
180 #else
181 " no-colors"
182 #endif
183 #ifdef ENABLE_LIRC
184 " lirc"
185 #endif
186 #ifdef HAVE_GETMOUSE
187 " getmouse"
188 #endif
189 #ifdef ENABLE_ARTIST_SCREEN
190 " artist-screen"
191 #endif
192 #ifdef ENABLE_HELP_SCREEN
193 " help-screen"
194 #endif
195 #ifdef ENABLE_SEARCH_SCREEN
196 " search-screen"
197 #endif
198 #ifdef ENABLE_SONG_SCREEN
199 " song-screen"
200 #endif
201 #ifdef ENABLE_KEYDEF_SCREEN
202 " key-screen"
203 #endif
204 #ifdef ENABLE_LYRICS_SCREEN
205 " lyrics-screen"
206 #endif
207 #ifdef ENABLE_OUTPUTS_SCREEN
208 " outputs-screen"
209 #endif
211 "\n");
212 #ifndef NCMPC_MINI
213 if (strcmp("translator-credits", _("translator-credits")) != 0)
214 /* To translators: these credits are shown
215 when ncmpc is started with "--version" */
216 printf("\n%s\n", _("translator-credits"));
217 #endif
218 exit(EXIT_SUCCESS);
219 case 'c': /* --colors */
220 #ifdef ENABLE_COLORS
221 options.enable_colors = true;
222 #endif
223 break;
224 case 'C': /* --no-colors */
225 #ifdef ENABLE_COLORS
226 options.enable_colors = false;
227 #endif
228 break;
229 case 'm': /* --mouse */
230 #ifdef HAVE_GETMOUSE
231 options.enable_mouse = true;
232 #endif
233 break;
234 case 'M': /* --no-mouse */
235 #ifdef HAVE_GETMOUSE
236 options.enable_mouse = false;
237 #endif
238 break;
239 case 'e': /* --exit */
240 /* deprecated */
241 break;
242 case 'p': /* --port */
243 options.port = atoi(arg);
244 break;
245 case 'h': /* --host */
246 if( options.host )
247 g_free(options.host);
248 options.host = g_strdup(arg);
249 break;
250 case 'P': /* --password */
251 if( options.password )
252 g_free(options.password);
253 options.password = locale_to_utf8(arg);
254 break;
255 case 'f': /* --config */
256 if( options.config_file )
257 g_free(options.config_file);
258 options.config_file = g_strdup(arg);
259 break;
260 case 'k': /* --key-file */
261 if( options.key_file )
262 g_free(options.key_file);
263 options.key_file = g_strdup(arg);
264 break;
265 case 'S': /* --key-file */
266 /* the splash screen was removed */
267 break;
268 #ifndef NDEBUG
269 case 'K': /* --dump-keys */
270 read_configuration();
271 write_key_bindings(stdout, KEYDEF_WRITE_ALL | KEYDEF_COMMENT_ALL);
272 exit(EXIT_SUCCESS);
273 break;
274 #endif
275 default:
276 fprintf(stderr,"Unknown Option %c = %s\n", c, arg);
277 break;
278 }
279 }
281 void
282 options_parse(int argc, const char *argv[])
283 {
284 int i;
285 const arg_opt_t *opt = NULL;
286 option_callback_fn_t option_cb = handle_option;
288 i=1;
289 while (i < argc) {
290 const char *arg = argv[i];
291 size_t len = strlen(arg);
293 /* check for a long option */
294 if (g_str_has_prefix(arg, "--")) {
295 char *name, *value;
297 /* make shure we got an argument for the previous option */
298 if( opt && opt->argument )
299 option_error(ERROR_MISSING_ARGUMENT, opt->longopt, opt->argument);
301 /* retreive a option argument */
302 if ((value=g_strrstr(arg+2, "="))) {
303 *value = '\0';
304 name = g_strdup(arg);
305 *value = '=';
306 value++;
307 } else
308 name = g_strdup(arg);
310 /* check if the option exists */
311 if( (opt=lookup_option(0, name+2)) == NULL )
312 option_error(ERROR_UNKNOWN_OPTION, name, NULL);
313 g_free(name);
315 /* abort if we got an argument to the option and dont want one */
316 if( value && opt->argument==NULL )
317 option_error(ERROR_GOT_ARGUMENT, arg, value);
319 /* execute option callback */
320 if (value || opt->argument==NULL) {
321 option_cb (opt->shortopt, value);
322 opt = NULL;
323 }
324 }
325 /* check for short options */
326 else if (len>=2 && g_str_has_prefix(arg, "-")) {
327 size_t j;
329 for(j=1; j<len; j++) {
330 /* make shure we got an argument for the previous option */
331 if (opt && opt->argument)
332 option_error(ERROR_MISSING_ARGUMENT,
333 opt->longopt, opt->argument);
335 /* check if the option exists */
336 if ((opt=lookup_option(arg[j], NULL)) == NULL)
337 option_error(ERROR_UNKNOWN_OPTION, arg, NULL);
339 /* if no option argument is needed execute callback */
340 if (opt->argument == NULL) {
341 option_cb (opt->shortopt, NULL);
342 opt = NULL;
343 }
344 }
345 } else {
346 /* is this a option argument? */
347 if (opt && opt->argument) {
348 option_cb (opt->shortopt, arg);
349 opt = NULL;
350 } else
351 option_error(ERROR_BAD_ARGUMENT, arg, NULL);
352 }
353 i++;
354 }
356 if (opt && opt->argument == NULL)
357 option_cb (opt->shortopt, NULL);
358 else if (opt && opt->argument)
359 option_error(ERROR_MISSING_ARGUMENT, opt->longopt, opt->argument);
360 }
362 void
363 options_init(void)
364 {
365 const char *value;
366 char *tmp;
368 /* get initial values for host and password from MPD_HOST (enviroment) */
369 if ((value = g_getenv(MPD_HOST_ENV)))
370 options.host = g_strdup(value);
371 else
372 options.host = g_strdup(DEFAULT_HOST);
374 if ((tmp = g_strstr_len(options.host, strlen(options.host), "@"))) {
375 char *oldhost = options.host;
376 *tmp = '\0';
377 options.password = locale_to_utf8(oldhost);
378 options.host = g_strdup(tmp+1);
379 g_free(oldhost);
380 }
382 /* get initial values for port from MPD_PORT (enviroment) */
383 if ((value = g_getenv(MPD_PORT_ENV)))
384 options.port = atoi(value);
386 /* default option values */
387 options.list_format = g_strdup(DEFAULT_LIST_FORMAT);
388 options.status_format = g_strdup(DEFAULT_STATUS_FORMAT);
389 options.screen_list = g_strsplit_set(DEFAULT_SCREEN_LIST, " ", 0);
390 options.timedisplay_type = g_strdup(DEFAULT_TIMEDISPLAY_TYPE);
391 #ifndef NCMPC_MINI
392 options.scroll_sep = g_strdup(DEFAULT_SCROLL_SEP);
393 #endif
394 }