1 /*
2 * $Id$
3 *
4 * (c) 2004 by Kalle Wallin <kaw@linux.se>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 *
19 */
21 #include "options.h"
22 #include "config.h"
23 #include "ncmpc.h"
24 #include "support.h"
25 #include "command.h"
26 #include "conf.h"
28 #include <stdlib.h>
29 #include <string.h>
31 #define MAX_LONGOPT_LENGTH 32
33 #define ERROR_UNKNOWN_OPTION 0x01
34 #define ERROR_BAD_ARGUMENT 0x02
35 #define ERROR_GOT_ARGUMENT 0x03
36 #define ERROR_MISSING_ARGUMENT 0x04
38 typedef struct {
39 int shortopt;
40 const char *longopt;
41 const char *argument;
42 const char *descrition;
43 } arg_opt_t;
46 typedef void (*option_callback_fn_t)(int c, const char *arg);
49 options_t options;
51 static arg_opt_t option_table[] = {
52 { '?', "help", NULL, "Show this help message" },
53 { 'V', "version", NULL, "Display version information" },
54 { 'c', "colors", NULL, "Enable colors" },
55 { 'C', "no-colors", NULL, "Disable colors" },
56 #ifdef HAVE_GETMOUSE
57 { 'm', "mouse", NULL, "Enable mouse" },
58 { 'M', "no-mouse", NULL, "Disable mouse" },
59 #endif
60 { 'e', "exit", NULL, "Exit on connection errors" },
61 { 'p', "port", "PORT", "Connect to server on port [" DEFAULT_PORT_STR "]" },
62 { 'h', "host", "HOST", "Connect to server on host [" DEFAULT_HOST "]" },
63 { 'P', "password","PASSWORD", "Connect with password" },
64 { 'f', "config", "FILE", "Read configuration from file" },
65 { 'k', "key-file","FILE", "Read configuration from file" },
66 { 'S', "no-splash", NULL, "Don't show the splash screen" },
67 #ifndef NDEBUG
68 { 'K', "dump-keys", NULL, "Dump key bindings to stdout" },
69 { 'D', "debug", NULL, "Enable debug output on stderr" },
70 #endif
71 { 0, NULL, NULL, NULL },
72 };
74 static arg_opt_t *
75 lookup_option(int s, char *l)
76 {
77 int i;
79 i=0;
80 while( option_table[i].descrition )
81 {
82 if( l && strcmp(l, option_table[i].longopt) == 0 )
83 return &option_table[i];;
84 if( s && s==option_table[i].shortopt )
85 return &option_table[i];;
86 i++;
87 }
88 return NULL;
89 }
91 static void
92 option_error(int error, const char *option, const char *arg)
93 {
94 switch(error)
95 {
96 case ERROR_UNKNOWN_OPTION:
97 fprintf(stderr, PACKAGE ": invalid option %s\n", option);
98 break;
99 case ERROR_BAD_ARGUMENT:
100 fprintf(stderr, PACKAGE ": bad argument: %s\n", option);
101 break;
102 case ERROR_GOT_ARGUMENT:
103 fprintf(stderr, PACKAGE ": invalid option %s=%s\n", option, arg);
104 break;
105 case ERROR_MISSING_ARGUMENT:
106 fprintf(stderr, PACKAGE ": missing value for %s option\n", option);
107 break;
108 default:
109 fprintf(stderr, PACKAGE ": internal error %d\n", error);
110 break;
111 }
112 exit(EXIT_FAILURE);
113 }
115 static void
116 display_help(void)
117 {
118 int i = 0;
120 printf("Usage: %s [OPTION]...\n", PACKAGE);
121 while( option_table[i].descrition )
122 {
123 char tmp[MAX_LONGOPT_LENGTH];
125 if( option_table[i].argument )
126 g_snprintf(tmp, MAX_LONGOPT_LENGTH, "%s=%s",
127 option_table[i].longopt,
128 option_table[i].argument);
129 else
130 g_strlcpy(tmp, option_table[i].longopt, 64);
132 printf(" -%c, --%-20s %s\n",
133 option_table[i].shortopt,
134 tmp,
135 option_table[i].descrition);
136 i++;
137 }
138 }
140 static void
141 handle_option(int c, const char *arg)
142 {
143 D("option callback -%c %s\n", c, arg);
144 switch(c)
145 {
146 case '?': /* --help */
147 display_help();
148 exit(EXIT_SUCCESS);
149 case 'V': /* --version */
150 printf("%s version: %s\n", PACKAGE, VERSION);
151 printf("build options:");
152 #ifndef NDEBUG
153 printf(" debug");
154 #endif
155 #ifdef ENABLE_NLS
156 printf(" nls");
157 #endif
158 #ifdef HAVE_GETMOUSE
159 printf(" getmouse");
160 #endif
161 #ifdef ENABLE_ARTIST_SCREEN
162 printf(" artist-screen");
163 #endif
164 #ifdef ENABLE_SEARCH_SCREEN
165 printf(" search-screen");
166 #endif
167 #ifdef ENABLE_KEYDEF_SCREEN
168 printf(" key-screen");
169 #endif
170 printf("\n");
171 exit(EXIT_SUCCESS);
172 case 'c': /* --colors */
173 options.enable_colors = TRUE;
174 break;
175 case 'C': /* --no-colors */
176 options.enable_colors = FALSE;
177 break;
178 case 'm': /* --mouse */
179 options.enable_mouse = TRUE;
180 break;
181 case 'M': /* --no-mouse */
182 options.enable_mouse = FALSE;
183 break;
184 case 'e': /* --exit */
185 options.reconnect = FALSE;
186 break;
187 case 'p': /* --port */
188 options.port = atoi(arg);
189 break;
190 case 'h': /* --host */
191 if( options.host )
192 g_free(options.host);
193 options.host = g_strdup(arg);
194 break;
195 case 'P': /* --password */
196 if( options.password )
197 g_free(options.password);
198 options.password = locale_to_utf8(arg);
199 break;
200 case 'f': /* --config */
201 if( options.config_file )
202 g_free(options.config_file);
203 options.config_file = g_strdup(arg);
204 break;
205 case 'k': /* --key-file */
206 if( options.key_file )
207 g_free(options.key_file);
208 options.key_file = g_strdup(arg);
209 break;
210 case 'S': /* --key-file */
211 /* the splash screen was removed */
212 break;
213 #ifndef NDEBUG
214 case 'K': /* --dump-keys */
215 read_configuration(&options);
216 write_key_bindings(stdout, KEYDEF_WRITE_ALL | KEYDEF_COMMENT_ALL);
217 exit(EXIT_SUCCESS);
218 break;
219 case 'D': /* --debug */
220 options.debug = TRUE;
221 break;
222 #endif
223 default:
224 fprintf(stderr,"Unknown Option %c = %s\n", c, arg);
225 break;
226 }
227 }
229 options_t *
230 options_parse(int argc, const char *argv[])
231 {
232 int i;
233 arg_opt_t *opt = NULL;
234 option_callback_fn_t option_cb = handle_option;
236 i=1;
237 while (i < argc) {
238 const char *arg = argv[i];
239 size_t len = strlen(arg);
241 /* check for a long option */
242 if (g_str_has_prefix(arg, "--")) {
243 char *name, *value;
245 /* make shure we got an argument for the previous option */
246 if( opt && opt->argument )
247 option_error(ERROR_MISSING_ARGUMENT, opt->longopt, opt->argument);
249 /* retreive a option argument */
250 if ((value=g_strrstr(arg+2, "="))) {
251 *value = '\0';
252 name = g_strdup(arg);
253 *value = '=';
254 value++;
255 } else
256 name = g_strdup(arg);
258 /* check if the option exists */
259 if( (opt=lookup_option(0, name+2)) == NULL )
260 option_error(ERROR_UNKNOWN_OPTION, name, NULL);
261 g_free(name);
263 /* abort if we got an argument to the option and dont want one */
264 if( value && opt->argument==NULL )
265 option_error(ERROR_GOT_ARGUMENT, arg, value);
267 /* execute option callback */
268 if (value || opt->argument==NULL) {
269 option_cb (opt->shortopt, value);
270 opt = NULL;
271 }
272 }
273 /* check for short options */
274 else if (len>=2 && g_str_has_prefix(arg, "-")) {
275 size_t j;
277 for(j=1; j<len; j++) {
278 /* make shure we got an argument for the previous option */
279 if( opt && opt->argument )
280 option_error(ERROR_MISSING_ARGUMENT,
281 opt->longopt, opt->argument);
283 /* check if the option exists */
284 if( (opt=lookup_option(arg[j], NULL))==NULL )
285 option_error(ERROR_UNKNOWN_OPTION, arg, NULL);
287 /* if no option argument is needed execute callback */
288 if( opt->argument==NULL ) {
289 option_cb (opt->shortopt, NULL);
290 opt = NULL;
291 }
292 }
293 } else {
294 /* is this a option argument? */
295 if( opt && opt->argument) {
296 option_cb (opt->shortopt, arg);
297 opt = NULL;
298 } else
299 option_error(ERROR_BAD_ARGUMENT, arg, NULL);
300 }
301 i++;
302 }
304 if( opt && opt->argument==NULL)
305 option_cb (opt->shortopt, NULL);
306 else if( opt && opt->argument )
307 option_error(ERROR_MISSING_ARGUMENT, opt->longopt, opt->argument);
309 return &options;
310 }
312 options_t *
313 options_init( void )
314 {
315 const char *value;
316 char *tmp;
318 memset(&options, 0, sizeof(options_t));
320 /* get initial values for host and password from MPD_HOST (enviroment) */
321 if ((value=g_getenv(MPD_HOST_ENV)))
322 options.host = g_strdup(value);
323 else
324 options.host = g_strdup(DEFAULT_HOST);
326 if ((tmp=g_strstr_len(options.host, strlen(options.host), "@"))) {
327 char *oldhost = options.host;
328 *tmp = '\0';
329 options.password = locale_to_utf8(oldhost);
330 options.host = g_strdup(tmp+1);
331 g_free(oldhost);
332 }
334 /* get initial values for port from MPD_PORT (enviroment) */
335 if ((value=g_getenv(MPD_PORT_ENV)))
336 options.port = atoi(value);
337 else
338 options.port = DEFAULT_PORT;
340 /* default option values */
341 options.reconnect = TRUE;
342 options.find_wrap = TRUE;
343 options.wide_cursor = TRUE;
344 options.audible_bell = TRUE;
345 options.crossfade_time = DEFAULT_CROSSFADE_TIME;
346 options.seek_time = 1;
347 options.screen_list = g_strsplit_set(DEFAULT_SCREEN_LIST, " ", 0);
348 options.timedisplay_type = g_strdup(DEFAULT_TIMEDISPLAY_TYPE);
349 options.lyrics_timeout = DEFAULT_LYRICS_TIMEOUT;
350 options.scroll = DEFAULT_SCROLL;
351 options.scroll_sep = g_strdup(DEFAULT_SCROLL_SEP);
353 return &options;
354 }