3c39bdaf6ff4aae9aa49e67d7153e2b9c43abdf6
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"
26 #include <stdlib.h>
27 #include <string.h>
28 #include <glib.h>
30 #define MAX_LONGOPT_LENGTH 32
32 #define ERROR_UNKNOWN_OPTION 0x01
33 #define ERROR_BAD_ARGUMENT 0x02
34 #define ERROR_GOT_ARGUMENT 0x03
35 #define ERROR_MISSING_ARGUMENT 0x04
37 typedef struct {
38 int shortopt;
39 const char *longopt;
40 const char *argument;
41 const char *descrition;
42 } arg_opt_t;
45 typedef void (*option_callback_fn_t)(int c, const char *arg);
48 options_t options = {
49 .port = DEFAULT_PORT,
50 .crossfade_time = DEFAULT_CROSSFADE_TIME,
51 .seek_time = 1,
52 #ifdef ENABLE_LYRICS_SCREEN
53 .lyrics_timeout = DEFAULT_LYRICS_TIMEOUT,
54 #endif
55 .find_wrap = true,
56 .wide_cursor = true,
57 .audible_bell = true,
58 .scroll = DEFAULT_SCROLL,
59 .welcome_screen_list = true,
60 };
62 static const arg_opt_t option_table[] = {
63 { '?', "help", NULL, "Show this help message" },
64 { 'V', "version", NULL, "Display version information" },
65 { 'c', "colors", NULL, "Enable colors" },
66 { 'C', "no-colors", NULL, "Disable colors" },
67 #ifdef HAVE_GETMOUSE
68 { 'm', "mouse", NULL, "Enable mouse" },
69 { 'M', "no-mouse", NULL, "Disable mouse" },
70 #endif
71 { 'e', "exit", NULL, "Exit on connection errors" },
72 { 'p', "port", "PORT", "Connect to server on port [" DEFAULT_PORT_STR "]" },
73 { 'h', "host", "HOST", "Connect to server on host [" DEFAULT_HOST "]" },
74 { 'P', "password","PASSWORD", "Connect with password" },
75 { 'f', "config", "FILE", "Read configuration from file" },
76 { 'k', "key-file","FILE", "Read configuration from file" },
77 { 'S', "no-splash", NULL, "Don't show the splash screen" },
78 #ifndef NDEBUG
79 { 'K', "dump-keys", NULL, "Dump key bindings to stdout" },
80 #endif
81 };
83 static const unsigned option_table_size = sizeof(option_table) / sizeof(option_table[0]);
85 static const arg_opt_t *
86 lookup_option(int s, char *l)
87 {
88 unsigned i;
90 for (i = 0; i < option_table_size; ++i) {
91 if (l && strcmp(l, option_table[i].longopt) == 0)
92 return &option_table[i];;
93 if (s && s == option_table[i].shortopt)
94 return &option_table[i];;
95 }
97 return NULL;
98 }
100 static void
101 option_error(int error, const char *option, const char *arg)
102 {
103 switch (error) {
104 case ERROR_UNKNOWN_OPTION:
105 fprintf(stderr, PACKAGE ": invalid option %s\n", option);
106 break;
107 case ERROR_BAD_ARGUMENT:
108 fprintf(stderr, PACKAGE ": bad argument: %s\n", option);
109 break;
110 case ERROR_GOT_ARGUMENT:
111 fprintf(stderr, PACKAGE ": invalid option %s=%s\n", option, arg);
112 break;
113 case ERROR_MISSING_ARGUMENT:
114 fprintf(stderr, PACKAGE ": missing value for %s option\n", option);
115 break;
116 default:
117 fprintf(stderr, PACKAGE ": internal error %d\n", error);
118 break;
119 }
121 exit(EXIT_FAILURE);
122 }
124 static void
125 display_help(void)
126 {
127 unsigned i;
129 printf("Usage: %s [OPTION]...\n", PACKAGE);
131 for (i = 0; i < option_table_size; ++i) {
132 char tmp[MAX_LONGOPT_LENGTH];
134 if (option_table[i].argument)
135 g_snprintf(tmp, MAX_LONGOPT_LENGTH, "%s=%s",
136 option_table[i].longopt,
137 option_table[i].argument);
138 else
139 g_strlcpy(tmp, option_table[i].longopt, 64);
141 printf(" -%c, --%-20s %s\n",
142 option_table[i].shortopt,
143 tmp,
144 option_table[i].descrition);
145 i++;
146 }
147 }
149 static void
150 handle_option(int c, const char *arg)
151 {
152 switch (c) {
153 case '?': /* --help */
154 display_help();
155 exit(EXIT_SUCCESS);
156 case 'V': /* --version */
157 puts(PACKAGE " version: " VERSION "\n"
158 "build options:"
159 #ifndef NDEBUG
160 " debug"
161 #endif
162 #ifdef ENABLE_NLS
163 " nls"
164 #endif
165 #ifdef ENABLE_COLORS
166 " colors"
167 #else
168 " no-colors"
169 #endif
170 #ifdef HAVE_GETMOUSE
171 " getmouse"
172 #endif
173 #ifdef ENABLE_ARTIST_SCREEN
174 " artist-screen"
175 #endif
176 #ifdef ENABLE_SEARCH_SCREEN
177 " search-screen"
178 #endif
179 #ifdef ENABLE_KEYDEF_SCREEN
180 " key-screen"
181 #endif
182 "\n");
183 exit(EXIT_SUCCESS);
184 case 'c': /* --colors */
185 #ifdef ENABLE_COLORS
186 options.enable_colors = true;
187 #endif
188 break;
189 case 'C': /* --no-colors */
190 #ifdef ENABLE_COLORS
191 options.enable_colors = false;
192 #endif
193 break;
194 case 'm': /* --mouse */
195 #ifdef HAVE_GETMOUSE
196 options.enable_mouse = true;
197 #endif
198 break;
199 case 'M': /* --no-mouse */
200 #ifdef HAVE_GETMOUSE
201 options.enable_mouse = false;
202 #endif
203 break;
204 case 'e': /* --exit */
205 /* deprecated */
206 break;
207 case 'p': /* --port */
208 options.port = atoi(arg);
209 break;
210 case 'h': /* --host */
211 if( options.host )
212 g_free(options.host);
213 options.host = g_strdup(arg);
214 break;
215 case 'P': /* --password */
216 if( options.password )
217 g_free(options.password);
218 options.password = locale_to_utf8(arg);
219 break;
220 case 'f': /* --config */
221 if( options.config_file )
222 g_free(options.config_file);
223 options.config_file = g_strdup(arg);
224 break;
225 case 'k': /* --key-file */
226 if( options.key_file )
227 g_free(options.key_file);
228 options.key_file = g_strdup(arg);
229 break;
230 case 'S': /* --key-file */
231 /* the splash screen was removed */
232 break;
233 #ifndef NDEBUG
234 case 'K': /* --dump-keys */
235 read_configuration();
236 write_key_bindings(stdout, KEYDEF_WRITE_ALL | KEYDEF_COMMENT_ALL);
237 exit(EXIT_SUCCESS);
238 break;
239 #endif
240 default:
241 fprintf(stderr,"Unknown Option %c = %s\n", c, arg);
242 break;
243 }
244 }
246 void
247 options_parse(int argc, const char *argv[])
248 {
249 int i;
250 const arg_opt_t *opt = NULL;
251 option_callback_fn_t option_cb = handle_option;
253 i=1;
254 while (i < argc) {
255 const char *arg = argv[i];
256 size_t len = strlen(arg);
258 /* check for a long option */
259 if (g_str_has_prefix(arg, "--")) {
260 char *name, *value;
262 /* make shure we got an argument for the previous option */
263 if( opt && opt->argument )
264 option_error(ERROR_MISSING_ARGUMENT, opt->longopt, opt->argument);
266 /* retreive a option argument */
267 if ((value=g_strrstr(arg+2, "="))) {
268 *value = '\0';
269 name = g_strdup(arg);
270 *value = '=';
271 value++;
272 } else
273 name = g_strdup(arg);
275 /* check if the option exists */
276 if( (opt=lookup_option(0, name+2)) == NULL )
277 option_error(ERROR_UNKNOWN_OPTION, name, NULL);
278 g_free(name);
280 /* abort if we got an argument to the option and dont want one */
281 if( value && opt->argument==NULL )
282 option_error(ERROR_GOT_ARGUMENT, arg, value);
284 /* execute option callback */
285 if (value || opt->argument==NULL) {
286 option_cb (opt->shortopt, value);
287 opt = NULL;
288 }
289 }
290 /* check for short options */
291 else if (len>=2 && g_str_has_prefix(arg, "-")) {
292 size_t j;
294 for(j=1; j<len; j++) {
295 /* make shure we got an argument for the previous option */
296 if (opt && opt->argument)
297 option_error(ERROR_MISSING_ARGUMENT,
298 opt->longopt, opt->argument);
300 /* check if the option exists */
301 if ((opt=lookup_option(arg[j], NULL)) == NULL)
302 option_error(ERROR_UNKNOWN_OPTION, arg, NULL);
304 /* if no option argument is needed execute callback */
305 if (opt->argument == NULL) {
306 option_cb (opt->shortopt, NULL);
307 opt = NULL;
308 }
309 }
310 } else {
311 /* is this a option argument? */
312 if (opt && opt->argument) {
313 option_cb (opt->shortopt, arg);
314 opt = NULL;
315 } else
316 option_error(ERROR_BAD_ARGUMENT, arg, NULL);
317 }
318 i++;
319 }
321 if (opt && opt->argument == NULL)
322 option_cb (opt->shortopt, NULL);
323 else if (opt && opt->argument)
324 option_error(ERROR_MISSING_ARGUMENT, opt->longopt, opt->argument);
325 }
327 void
328 options_init(void)
329 {
330 const char *value;
331 char *tmp;
333 /* get initial values for host and password from MPD_HOST (enviroment) */
334 if ((value = g_getenv(MPD_HOST_ENV)))
335 options.host = g_strdup(value);
336 else
337 options.host = g_strdup(DEFAULT_HOST);
339 if ((tmp = g_strstr_len(options.host, strlen(options.host), "@"))) {
340 char *oldhost = options.host;
341 *tmp = '\0';
342 options.password = locale_to_utf8(oldhost);
343 options.host = g_strdup(tmp+1);
344 g_free(oldhost);
345 }
347 /* get initial values for port from MPD_PORT (enviroment) */
348 if ((value = g_getenv(MPD_PORT_ENV)))
349 options.port = atoi(value);
351 /* default option values */
352 options.list_format = g_strdup(DEFAULT_LIST_FORMAT);
353 options.status_format = g_strdup(DEFAULT_STATUS_FORMAT);
354 options.screen_list = g_strsplit_set(DEFAULT_SCREEN_LIST, " ", 0);
355 options.timedisplay_type = g_strdup(DEFAULT_TIMEDISPLAY_TYPE);
356 options.scroll_sep = g_strdup(DEFAULT_SCROLL_SEP);
357 }