Code

options: Include all build options in version output.
[ncmpc.git] / src / options.c
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 #ifndef NCMPC_MINI
59         .scroll = DEFAULT_SCROLL,
60         .welcome_screen_list = true,
61 #endif
62 };
64 static const arg_opt_t option_table[] = {
65         { '?', "help", NULL, "Show this help message" },
66         { 'V', "version", NULL, "Display version information" },
67         { 'c', "colors", NULL, "Enable colors" },
68         { 'C', "no-colors", NULL, "Disable colors" },
69 #ifdef HAVE_GETMOUSE
70         { 'm', "mouse", NULL, "Enable mouse" },
71         { 'M', "no-mouse", NULL, "Disable mouse" },
72 #endif
73         { 'e', "exit", NULL, "Exit on connection errors" },
74         { 'p', "port", "PORT", "Connect to server on port [" DEFAULT_PORT_STR "]" },
75         { 'h', "host", "HOST", "Connect to server on host [" DEFAULT_HOST "]" },
76         { 'P', "password","PASSWORD", "Connect with password" },
77         { 'f', "config", "FILE", "Read configuration from file" },
78         { 'k', "key-file","FILE", "Read configuration from file" },
79         { 'S', "no-splash", NULL, "Don't show the splash screen" },
80 #ifndef NDEBUG
81         { 'K', "dump-keys", NULL, "Dump key bindings to stdout" },
82 #endif
83 };
85 static const unsigned option_table_size = sizeof(option_table) / sizeof(option_table[0]);
87 static const arg_opt_t *
88 lookup_option(int s, char *l)
89 {
90         unsigned i;
92         for (i = 0; i < option_table_size; ++i) {
93                 if (l && strcmp(l, option_table[i].longopt) == 0)
94                         return &option_table[i];;
95                 if (s && s == option_table[i].shortopt)
96                         return &option_table[i];;
97         }
99         return NULL;
102 static void
103 option_error(int error, const char *option, const char *arg)
105         switch (error) {
106         case ERROR_UNKNOWN_OPTION:
107                 fprintf(stderr, PACKAGE ": invalid option %s\n", option);
108                 break;
109         case ERROR_BAD_ARGUMENT:
110                 fprintf(stderr, PACKAGE ": bad argument: %s\n", option);
111                 break;
112         case ERROR_GOT_ARGUMENT:
113                 fprintf(stderr, PACKAGE ": invalid option %s=%s\n", option, arg);
114                 break;
115         case ERROR_MISSING_ARGUMENT:
116                 fprintf(stderr, PACKAGE ": missing value for %s option\n", option);
117                 break;
118         default:
119                 fprintf(stderr, PACKAGE ": internal error %d\n", error);
120                 break;
121         }
123         exit(EXIT_FAILURE);
126 static void
127 display_help(void)
129         unsigned i;
131         printf("Usage: %s [OPTION]...\n", PACKAGE);
133         for (i = 0; i < option_table_size; ++i) {
134                 char tmp[MAX_LONGOPT_LENGTH];
136                 if (option_table[i].argument)
137                         g_snprintf(tmp, MAX_LONGOPT_LENGTH, "%s=%s",
138                                    option_table[i].longopt,
139                                    option_table[i].argument);
140                 else
141                         g_strlcpy(tmp, option_table[i].longopt, 64);
143                 printf("  -%c, --%-20s %s\n",
144                        option_table[i].shortopt,
145                        tmp,
146                        option_table[i].descrition);
147                 i++;
148         }
151 static void
152 handle_option(int c, const char *arg)
154         switch (c) {
155         case '?': /* --help */
156                 display_help();
157                 exit(EXIT_SUCCESS);
158         case 'V': /* --version */
159                 puts(PACKAGE " version: " VERSION "\n"
160                      "build options:"
161 #ifdef NCMPC_MINI
162                      " mini"
163 #endif
164 #ifndef NDEBUG
165                      " debug"
166 #endif
167 #ifdef ENABLE_WIDE
168                      " wide"
169 #endif
170 #ifdef ENABLE_NLS
171                      " nls"
172 #endif
173 #ifdef ENABLE_COLORS
174                      " colors"
175 #else
176                      " no-colors"
177 #endif
178 #ifdef ENABLE_LIRC
179                      " lirc"
180 #endif
181 #ifdef HAVE_GETMOUSE
182                      " getmouse"
183 #endif
184 #ifdef ENABLE_ARTIST_SCREEN
185                      " artist-screen"
186 #endif
187 #ifdef ENABLE_HELP_SCREEN
188                      " help-screen"
189 #endif
190 #ifdef ENABLE_SEARCH_SCREEN
191                      " search-screen"
192 #endif
193 #ifdef ENABLE_SONG_SCREEN
194                      " song-screen"
195 #endif
196 #ifdef ENABLE_KEYDEF_SCREEN
197                      " key-screen"
198 #endif
199 #ifdef ENABLE_LYRICS_SCREEN
200                      " lyrics-screen"
201 #endif
202 #ifdef ENABLE_OUTPUTS_SCREEN
203                      " outputs-screen"
204 #endif
206                      "\n");
207                 exit(EXIT_SUCCESS);
208         case 'c': /* --colors */
209 #ifdef ENABLE_COLORS
210                 options.enable_colors = true;
211 #endif
212                 break;
213         case 'C': /* --no-colors */
214 #ifdef ENABLE_COLORS
215                 options.enable_colors = false;
216 #endif
217                 break;
218         case 'm': /* --mouse */
219 #ifdef HAVE_GETMOUSE
220                 options.enable_mouse = true;
221 #endif
222                 break;
223         case 'M': /* --no-mouse */
224 #ifdef HAVE_GETMOUSE
225                 options.enable_mouse = false;
226 #endif
227                 break;
228         case 'e': /* --exit */
229                 /* deprecated */
230                 break;
231         case 'p': /* --port */
232                 options.port = atoi(arg);
233                 break;
234         case 'h': /* --host */
235                 if( options.host )
236                         g_free(options.host);
237                 options.host = g_strdup(arg);
238                 break;
239         case 'P': /* --password */
240                 if( options.password )
241                         g_free(options.password);
242                 options.password = locale_to_utf8(arg);
243                 break;
244         case 'f': /* --config */
245                 if( options.config_file )
246                         g_free(options.config_file);
247                 options.config_file = g_strdup(arg);
248                 break;
249         case 'k': /* --key-file */
250                 if( options.key_file )
251                         g_free(options.key_file);
252                 options.key_file = g_strdup(arg);
253                 break;
254         case 'S': /* --key-file */
255                 /* the splash screen was removed */
256                 break;
257 #ifndef NDEBUG
258         case 'K': /* --dump-keys */
259                 read_configuration();
260                 write_key_bindings(stdout, KEYDEF_WRITE_ALL | KEYDEF_COMMENT_ALL);
261                 exit(EXIT_SUCCESS);
262                 break;
263 #endif
264         default:
265                 fprintf(stderr,"Unknown Option %c = %s\n", c, arg);
266                 break;
267         }
270 void
271 options_parse(int argc, const char *argv[])
273         int i;
274         const arg_opt_t *opt = NULL;
275         option_callback_fn_t option_cb = handle_option;
277         i=1;
278         while (i < argc) {
279                 const char *arg = argv[i];
280                 size_t len = strlen(arg);
282                 /* check for a long option */
283                 if (g_str_has_prefix(arg, "--")) {
284                         char *name, *value;
286                         /* make shure we got an argument for the previous option */
287                         if( opt && opt->argument )
288                                 option_error(ERROR_MISSING_ARGUMENT, opt->longopt, opt->argument);
290                         /* retreive a option argument */
291                         if ((value=g_strrstr(arg+2, "="))) {
292                                 *value = '\0';
293                                 name = g_strdup(arg);
294                                 *value = '=';
295                                 value++;
296                         } else
297                                 name = g_strdup(arg);
299                         /* check if the option exists */
300                         if( (opt=lookup_option(0, name+2)) == NULL )
301                                 option_error(ERROR_UNKNOWN_OPTION, name, NULL);
302                         g_free(name);
304                         /* abort if we got an argument to the option and dont want one */
305                         if( value && opt->argument==NULL )
306                                 option_error(ERROR_GOT_ARGUMENT, arg, value);
308                         /* execute option callback */
309                         if (value || opt->argument==NULL) {
310                                 option_cb (opt->shortopt, value);
311                                 opt = NULL;
312                         }
313                 }
314                 /* check for short options */
315                 else if (len>=2 && g_str_has_prefix(arg, "-")) {
316                         size_t j;
318                         for(j=1; j<len; j++) {
319                                 /* make shure we got an argument for the previous option */
320                                 if (opt && opt->argument)
321                                         option_error(ERROR_MISSING_ARGUMENT,
322                                                      opt->longopt, opt->argument);
324                                 /* check if the option exists */
325                                 if ((opt=lookup_option(arg[j], NULL)) == NULL)
326                                         option_error(ERROR_UNKNOWN_OPTION, arg, NULL);
328                                 /* if no option argument is needed execute callback */
329                                 if (opt->argument == NULL) {
330                                         option_cb (opt->shortopt, NULL);
331                                         opt = NULL;
332                                 }
333                         }
334                 } else {
335                         /* is this a option argument? */
336                         if (opt && opt->argument) {
337                                 option_cb (opt->shortopt, arg);
338                                 opt = NULL;
339                         } else
340                                 option_error(ERROR_BAD_ARGUMENT, arg, NULL);
341                 }
342                 i++;
343         }
345         if (opt && opt->argument == NULL)
346                 option_cb (opt->shortopt, NULL);
347         else if (opt && opt->argument)
348                 option_error(ERROR_MISSING_ARGUMENT, opt->longopt, opt->argument);
351 void
352 options_init(void)
354         const char *value;
355         char *tmp;
357         /* get initial values for host and password from MPD_HOST (enviroment) */
358         if ((value = g_getenv(MPD_HOST_ENV)))
359                 options.host = g_strdup(value);
360         else
361                 options.host = g_strdup(DEFAULT_HOST);
363         if ((tmp = g_strstr_len(options.host, strlen(options.host), "@"))) {
364                 char *oldhost = options.host;
365                 *tmp  = '\0';
366                 options.password = locale_to_utf8(oldhost);
367                 options.host = g_strdup(tmp+1);
368                 g_free(oldhost);
369         }
371         /* get initial values for port from MPD_PORT (enviroment) */
372         if ((value = g_getenv(MPD_PORT_ENV)))
373                 options.port = atoi(value);
375         /* default option values */
376         options.list_format = g_strdup(DEFAULT_LIST_FORMAT);
377         options.status_format = g_strdup(DEFAULT_STATUS_FORMAT);
378         options.screen_list = g_strsplit_set(DEFAULT_SCREEN_LIST, " ", 0);
379         options.timedisplay_type = g_strdup(DEFAULT_TIMEDISPLAY_TYPE);
380 #ifndef NCMPC_MINI
381         options.scroll_sep = g_strdup(DEFAULT_SCROLL_SEP);
382 #endif