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 <stdio.h>
22 #include <stdlib.h>
23 #include <string.h>
24 #include <ncurses.h>
25 #include <glib.h>
27 #include "config.h"
28 #include "ncmpc.h"
29 #include "support.h"
30 #include "options.h"
31 #include "command.h"
32 #include "conf.h"
34 #define MAX_LONGOPT_LENGTH 32
36 #define ERROR_UNKNOWN_OPTION 0x01
37 #define ERROR_BAD_ARGUMENT 0x02
38 #define ERROR_GOT_ARGUMENT 0x03
39 #define ERROR_MISSING_ARGUMENT 0x04
43 typedef struct
44 {
45 int shortopt;
46 char *longopt;
47 char *argument;
48 char *descrition;
49 } arg_opt_t;
52 typedef void (*option_callback_fn_t) (int c, char *arg);
55 options_t options;
57 static arg_opt_t option_table[] = {
58 { '?', "help", NULL, "Show this help message" },
59 { 'V', "version", NULL, "Display version information" },
60 { 'c', "colors", NULL, "Enable colors" },
61 { 'C', "no-colors", NULL, "Disable colors" },
62 #ifdef HAVE_GETMOUSE
63 { 'm', "mouse", NULL, "Enable mouse" },
64 { 'M', "no-mouse", NULL, "Disable mouse" },
65 #endif
66 { 'e', "exit", NULL, "Exit on connection errors" },
67 { 'p', "port", "PORT", "Connect to server on port [" DEFAULT_PORT_STR "]" },
68 { 'h', "host", "HOST", "Connect to server on host [" DEFAULT_HOST "]" },
69 { 'P', "password","PASSWORD", "Connect with password" },
70 { 'f', "config", "FILE", "Read configuration from file" },
71 { 'k', "key-file","FILE", "Read configuration from file" },
72 #ifdef DEBUG
73 { 'K', "dump-keys", NULL, "Dump key bindings to stdout" },
74 { 'D', "debug", NULL, "Enable debug output on stderr" },
75 #endif
76 { 0, NULL, NULL, NULL },
77 };
79 static arg_opt_t *
80 lookup_option(int s, char *l)
81 {
82 int i;
84 i=0;
85 while( option_table[i].descrition )
86 {
87 if( l && strcmp(l, option_table[i].longopt) == 0 )
88 return &option_table[i];;
89 if( s && s==option_table[i].shortopt )
90 return &option_table[i];;
91 i++;
92 }
93 return NULL;
94 }
96 static void
97 option_error(int error, char *option, char *arg)
98 {
99 switch(error)
100 {
101 case ERROR_UNKNOWN_OPTION:
102 fprintf(stderr, PACKAGE ": invalid option %s\n", option);
103 break;
104 case ERROR_BAD_ARGUMENT:
105 fprintf(stderr, PACKAGE ": bad argument: %s\n", option);
106 break;
107 case ERROR_GOT_ARGUMENT:
108 fprintf(stderr, PACKAGE ": invalid option %s=%s\n", option, arg);
109 break;
110 case ERROR_MISSING_ARGUMENT:
111 fprintf(stderr, PACKAGE ": missing value for %s option\n", option);
112 break;
113 default:
114 fprintf(stderr, PACKAGE ": internal error %d\n", error);
115 break;
116 }
117 exit(EXIT_FAILURE);
118 }
120 static void
121 display_help(void)
122 {
123 int i = 0;
125 printf("Usage: %s [OPTION]...\n", PACKAGE);
126 while( option_table[i].descrition )
127 {
128 char tmp[MAX_LONGOPT_LENGTH];
130 if( option_table[i].argument )
131 g_snprintf(tmp, MAX_LONGOPT_LENGTH, "%s=%s",
132 option_table[i].longopt,
133 option_table[i].argument);
134 else
135 g_strlcpy(tmp, option_table[i].longopt, 64);
137 printf(" -%c, --%-20s %s\n",
138 option_table[i].shortopt,
139 tmp,
140 option_table[i].descrition);
141 i++;
142 }
143 }
145 static void
146 handle_option(int c, char *arg)
147 {
148 D("option callback -%c %s\n", c, arg);
149 switch(c)
150 {
151 case '?': /* --help */
152 display_help();
153 exit(EXIT_SUCCESS);
154 case 'V': /* --version */
155 printf("%s version: %s\n", PACKAGE, VERSION);
156 printf("build options:");
157 #ifdef DEBUG
158 printf(" debug");
159 #endif
160 #ifdef ENABLE_NLS
161 printf(" nls");
162 #endif
163 #ifdef HAVE_GETMOUSE
164 printf(" getmouse");
165 #endif
166 #ifdef ENABLE_ARTIST_SCREEN
167 printf(" artist-screen");
168 #endif
169 #ifdef ENABLE_SEARCH_SCREEN
170 printf(" search-screen");
171 #endif
172 #ifdef ENABLE_KEYDEF_SCREEN
173 printf(" key-screen");
174 #endif
175 #ifdef ENABLE_CLOCK_SCREEN
176 printf(" clock-screen");
177 #endif
178 printf("\n");
179 exit(EXIT_SUCCESS);
180 case 'c': /* --colors */
181 options.enable_colors = TRUE;
182 break;
183 case 'C': /* --no-colors */
184 options.enable_colors = FALSE;
185 break;
186 case 'm': /* --mouse */
187 options.enable_mouse = TRUE;
188 break;
189 case 'M': /* --no-mouse */
190 options.enable_mouse = FALSE;
191 break;
192 case 'e': /* --exit */
193 options.reconnect = FALSE;
194 break;
195 case 'p': /* --port */
196 options.port = atoi(arg);
197 break;
198 case 'h': /* --host */
199 if( options.host )
200 g_free(options.host);
201 options.host = g_strdup(arg);
202 break;
203 case 'P': /* --password */
204 if( options.password )
205 g_free(options.password);
206 options.password = locale_to_utf8(arg);
207 break;
208 case 'f': /* --config */
209 if( options.config_file )
210 g_free(options.config_file);
211 options.config_file = g_strdup(arg);
212 break;
213 case 'k': /* --key-file */
214 if( options.key_file )
215 g_free(options.key_file);
216 options.key_file = g_strdup(arg);
217 break;
218 #ifdef DEBUG
219 case 'K': /* --dump-keys */
220 read_configuration(&options);
221 write_key_bindings(stdout, KEYDEF_WRITE_ALL | KEYDEF_COMMENT_ALL);
222 exit(EXIT_SUCCESS);
223 break;
224 case 'D': /* --debug */
225 options.debug = TRUE;
226 break;
227 #endif
228 default:
229 fprintf(stderr,"Unknown Option %c = %s\n", c, arg);
230 break;
231 }
232 }
234 options_t *
235 options_get(void)
236 {
237 return &options;
238 }
240 options_t *
241 options_parse(int argc, const char *argv[])
242 {
243 int i;
244 arg_opt_t *opt = NULL;
245 option_callback_fn_t option_cb = handle_option;
247 i=1;
248 while( i<argc )
249 {
250 char *arg = (char *) argv[i];
251 size_t len=strlen(arg);
253 /* check for a long option */
254 if( g_str_has_prefix(arg, "--") )
255 {
256 char *name, *value;
258 /* make shure we got an argument for the previous option */
259 if( opt && opt->argument )
260 option_error(ERROR_MISSING_ARGUMENT, opt->longopt, opt->argument);
262 /* retreive a option argument */
263 if( (value=g_strrstr(arg+2, "=")) )
264 {
265 *value = '\0';
266 name = g_strdup(arg);
267 *value = '=';
268 value++;
269 }
270 else
271 name = g_strdup(arg);
273 /* check if the option exists */
274 if( (opt=lookup_option(0, name+2)) == NULL )
275 option_error(ERROR_UNKNOWN_OPTION, name, NULL);
276 g_free(name);
278 /* abort if we got an argument to the option and dont want one */
279 if( value && opt->argument==NULL )
280 option_error(ERROR_GOT_ARGUMENT, arg, value);
282 /* execute option callback */
283 if( value || opt->argument==NULL )
284 {
285 option_cb (opt->shortopt, value);
286 opt = NULL;
287 }
288 }
289 /* check for short options */
290 else if( len>=2 && g_str_has_prefix(arg, "-") )
291 {
292 int j;
294 for(j=1; j<len; j++)
295 {
296 /* make shure we got an argument for the previous option */
297 if( opt && opt->argument )
298 option_error(ERROR_MISSING_ARGUMENT,
299 opt->longopt, opt->argument);
301 /* check if the option exists */
302 if( (opt=lookup_option(arg[j], NULL))==NULL )
303 option_error(ERROR_UNKNOWN_OPTION, arg, NULL);
305 /* if no option argument is needed execute callback */
306 if( opt->argument==NULL )
307 {
308 option_cb (opt->shortopt, NULL);
309 opt = NULL;
310 }
311 }
312 }
313 else
314 {
315 /* is this a option argument? */
316 if( opt && opt->argument)
317 {
318 option_cb (opt->shortopt, arg);
319 opt = NULL;
320 }
321 else
322 option_error(ERROR_BAD_ARGUMENT, arg, NULL);
323 }
324 i++;
325 }
327 if( opt && opt->argument==NULL)
328 option_cb (opt->shortopt, NULL);
329 else if( opt && opt->argument )
330 option_error(ERROR_MISSING_ARGUMENT, opt->longopt, opt->argument);
332 return &options;
333 }
336 options_t *
337 options_init( void )
338 {
339 const char *value;
340 char *tmp;
342 memset(&options, 0, sizeof(options_t));
344 /* get initial values for host and password from MPD_HOST (enviroment) */
345 if( (value=g_getenv(MPD_HOST_ENV)) )
346 options.host = g_strdup(value);
347 else
348 options.host = g_strdup(DEFAULT_HOST);
349 if( (tmp=g_strstr_len(options.host, strlen(options.host), "@")) )
350 {
351 char *oldhost = options.host;
352 *tmp = '\0';
353 options.password = locale_to_utf8(oldhost);
354 options.host = g_strdup(tmp+1);
355 g_free(oldhost);
356 }
357 /* get initial values for port from MPD_PORT (enviroment) */
358 if( (value=g_getenv(MPD_PORT_ENV)) )
359 options.port = atoi(value);
360 else
361 options.port = DEFAULT_PORT;
363 /* default option values */
364 options.reconnect = TRUE;
365 options.find_wrap = TRUE;
366 options.wide_cursor = TRUE;
367 options.audible_bell = TRUE;
368 options.crossfade_time = DEFAULT_CROSSFADE_TIME;
369 options.seek_time = 1;
370 options.screen_list = g_strsplit_set(DEFAULT_SCREEN_LIST, " ", 0);
371 options.timedisplay_type = DEFAULT_TIMEDISPLAY_TYPE;
373 return &options;
374 }