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 <ctype.h>
20 #include <stdio.h>
21 #include <errno.h>
22 #include <stdlib.h>
23 #include <unistd.h>
24 #include <string.h>
25 #include <sys/types.h>
26 #include <sys/stat.h>
27 #include <fcntl.h>
29 #include <glib.h>
30 #include <ncurses.h>
32 #include "config.h"
33 #include "options.h"
34 #include "support.h"
35 #include "command.h"
36 #include "conf.h"
38 #ifdef DEBUG
39 #define D(x) x
40 #else
41 #define D(x)
42 #endif
44 #define RCFILE "." PACKAGE "rc"
46 #define MAX_LINE_LENGTH 1024
47 #define COMMENT_TOKEN '#'
49 /* configuration field names */
50 #define CONF_ENABLE_COLORS "enable_colors"
51 #define CONF_AUTO_CENTER "auto_center"
53 /* configuration field names - colors */
54 #define CONF_COLOR_BACKGROUND "background_color"
55 #define CONF_COLOR_TITLE "title_color"
56 #define CONF_COLOR_LINE "line_color"
57 #define CONF_COLOR_LIST "list_color"
58 #define CONF_COLOR_PROGRESS "progress_color"
59 #define CONF_COLOR_STATUS "status_color"
60 #define CONF_COLOR_ALERT "alert_color"
61 #define CONF_WIDE_CURSOR "wide_cursor"
62 #define CONF_KEY_DEFINITION "key"
64 typedef enum {
65 KEY_PARSER_UNKNOWN,
66 KEY_PARSER_CHAR,
67 KEY_PARSER_DEC,
68 KEY_PARSER_HEX,
69 KEY_PARSER_DONE
70 } key_parser_state_t;
72 static int
73 str2bool(char *str)
74 {
75 if( !strcasecmp(str,"no") || !strcasecmp(str,"false") ||
76 !strcasecmp(str,"off") || !strcasecmp(str,"0") )
77 return 0;
78 return 1;
79 }
81 static int
82 str2color(char *str)
83 {
84 if( !strcasecmp(str,"black") )
85 return COLOR_BLACK;
86 else if( !strcasecmp(str,"red") )
87 return COLOR_RED;
88 else if( !strcasecmp(str,"green") )
89 return COLOR_GREEN;
90 else if( !strcasecmp(str,"yellow") )
91 return COLOR_YELLOW;
92 else if( !strcasecmp(str,"blue") )
93 return COLOR_BLUE;
94 else if( !strcasecmp(str,"magenta") )
95 return COLOR_MAGENTA;
96 else if( !strcasecmp(str,"cyan") )
97 return COLOR_CYAN;
98 else if( !strcasecmp(str,"white") )
99 return COLOR_WHITE;
100 else if( !strcasecmp(str,"default") || !strcasecmp(str,"none") )
101 return -1;
102 fprintf(stderr,"Warning: unknown color %s\n", str);
103 return -2;
104 }
106 static int
107 parse_key_value(char *str, size_t len, char **end)
108 {
109 int i, value;
110 key_parser_state_t state;
112 i=0;
113 value=0;
114 state=KEY_PARSER_UNKNOWN;
115 *end = str;
117 while( i<len && state!=KEY_PARSER_DONE )
118 {
119 int next = 0;
120 int c = str[i];
122 if( i+1<len )
123 next = str[i+1];
125 switch(state)
126 {
127 case KEY_PARSER_UNKNOWN:
128 if( c=='\'' )
129 state = KEY_PARSER_CHAR;
130 else if( c=='0' && next=='x' )
131 state = KEY_PARSER_HEX;
132 else if( isdigit(c) )
133 state = KEY_PARSER_DEC;
134 else {
135 fprintf(stderr, "Error: Unsupported key definition - %s\n", str);
136 return -1;
137 }
138 break;
139 case KEY_PARSER_CHAR:
140 if( next!='\'' )
141 {
142 fprintf(stderr, "Error: Unsupported key definition - %s\n", str);
143 return -1;
144 }
145 value = c;
146 *end = str+i+2;
147 state = KEY_PARSER_DONE;
148 break;
149 case KEY_PARSER_DEC:
150 value = (int) strtol(str+(i-1), end, 10);
151 state = KEY_PARSER_DONE;
152 break;
153 case KEY_PARSER_HEX:
154 if( !isdigit(next) )
155 {
156 fprintf(stderr, "Error: Digit expexted after 0x - %s\n", str);
157 return -1;
158 }
159 value = (int) strtol(str+(i+1), end, 16);
160 state = KEY_PARSER_DONE;
161 break;
162 case KEY_PARSER_DONE:
163 break;
164 }
165 i++;
166 }
168 if( *end> str+len )
169 *end = str+len;
171 return value;
172 }
174 static int
175 parse_key_definition(char *str)
176 {
177 char buf[MAX_LINE_LENGTH];
178 char *p, *end;
179 size_t len = strlen(str);
180 int i,j,key;
181 int keys[MAX_COMMAND_KEYS];
182 command_t cmd;
184 /* get the command name */
185 i=0;
186 j=0;
187 memset(buf, 0, MAX_LINE_LENGTH);
188 while( i<len && str[i]!='=' && !IS_WHITESPACE(str[i]) )
189 buf[j++] = str[i++];
190 if( (cmd=get_key_command_from_name(buf)) == CMD_NONE )
191 {
192 fprintf(stderr, "Error: Unknown key command %s\n", buf);
193 return -1;
194 }
196 /* skip whitespace */
197 while( i<len && (str[i]=='=' || IS_WHITESPACE(str[i])) )
198 i++;
200 /* get the value part */
201 memset(buf, 0, MAX_LINE_LENGTH);
202 strncpy(buf, str+i, len-i);
203 len = strlen(buf);
204 if( len==0 )
205 {
206 fprintf(stderr,"Error: Incomplete key definition - %s\n", str);
207 return -1;
208 }
210 /* parse key values */
211 i = 0;
212 key = 0;
213 len = strlen(buf);
214 p = buf;
215 end = buf+len;
216 memset(keys, 0, sizeof(int)*MAX_COMMAND_KEYS);
217 while( i<MAX_COMMAND_KEYS && p<end && (key=parse_key_value(p,len+1,&p))>=0 )
218 {
219 keys[i++] = key;
220 while( p<end && (*p==',' || *p==' ' || *p=='\t') )
221 p++;
222 len = strlen(p);
223 }
224 if( key<0 )
225 {
226 fprintf(stderr,"Error: Bad key definition - %s\n", str);
227 return -1;
228 }
230 return assign_keys(cmd, keys);
231 }
233 static int
234 read_rc_file(char *filename, options_t *options)
235 {
236 int fd;
237 int quit = 0;
238 int color = -1;
239 int free_filename = 0;
241 if( filename==NULL )
242 return -1;
244 D(printf("Reading configuration file %s\n", filename));
245 if( (fd=open(filename,O_RDONLY)) <0 )
246 {
247 D(perror(filename));
248 if( free_filename )
249 g_free(filename);
250 return -1;
251 }
253 while( !quit )
254 {
255 int i,j;
256 int len;
257 int match_found;
258 char line[MAX_LINE_LENGTH];
259 char name[MAX_LINE_LENGTH];
260 char value[MAX_LINE_LENGTH];
262 line[0] = '\0';
263 value[0] = '\0';
265 i = 0;
266 /* read a line ending with '\n' */
267 do {
268 len = read( fd, &line[i], 1 );
269 if( len == 1 )
270 i++;
271 else
272 quit = 1;
273 } while( !quit && i<MAX_LINE_LENGTH && line[i-1]!='\n' );
276 /* remove trailing whitespace */
277 line[i] = '\0';
278 i--;
279 while( i>=0 && IS_WHITESPACE(line[i]) )
280 {
281 line[i] = '\0';
282 i--;
283 }
284 len = i+1;
286 if( len>0 )
287 {
288 i = 0;
289 /* skip whitespace */
290 while( i<len && IS_WHITESPACE(line[i]) )
291 i++;
293 /* continue if this line is not a comment */
294 if( line[i] != COMMENT_TOKEN )
295 {
296 /* get the name part */
297 j=0;
298 while( i<len && line[i]!='=' && !IS_WHITESPACE(line[i]) )
299 {
300 name[j++] = line[i++];
301 }
302 name[j] = '\0';
304 /* skip '=' and whitespace */
305 while( i<len && (line[i]=='=' || IS_WHITESPACE(line[i])) )
306 i++;
308 /* get the value part */
309 j=0;
310 while( i<len )
311 {
312 value[j++] = line[i++];
313 }
314 value[j] = '\0';
316 match_found = 1;
318 if( !strcasecmp(CONF_KEY_DEFINITION, name) )
319 {
320 parse_key_definition(value);
321 }
322 /* enable colors */
323 else if( !strcasecmp(CONF_ENABLE_COLORS, name) )
324 {
325 options->enable_colors = str2bool(value);
326 }
327 /* auto center */
328 else if( !strcasecmp(CONF_AUTO_CENTER, name) )
329 {
330 options->auto_center = str2bool(value);
331 }
332 /* background color */
333 else if( !strcasecmp(CONF_COLOR_BACKGROUND, name) )
334 {
335 if( (color=str2color(value)) >= -1 )
336 options->bg_color = color;
337 }
338 /* color - top (title) window */
339 else if( !strcasecmp(CONF_COLOR_TITLE, name) )
340 {
341 if( (color=str2color(value)) >= 0 )
342 options->title_color = color;
343 }
344 /* color - line (title) window */
345 else if( !strcasecmp(CONF_COLOR_LINE, name) )
346 {
347 if( (color=str2color(value)) >= 0 )
348 options->line_color = color;
349 }
350 /* color - list window */
351 else if( !strcasecmp(CONF_COLOR_LIST, name) )
352 {
353 if( (color=str2color(value)) >= 0 )
354 options->list_color = color;
355 }
356 /* color - progress bar */
357 else if( !strcasecmp(CONF_COLOR_PROGRESS, name) )
358 {
359 if( (color=str2color(value)) >= 0 )
360 options->progress_color = color;
361 }
362 /* color - status window */
363 else if( !strcasecmp(CONF_COLOR_STATUS, name) )
364 {
365 if( (color=str2color(value)) >= 0 )
366 options->status_color = color;
367 }
368 /* color - alerts */
369 else if( !strcasecmp(CONF_COLOR_ALERT, name) )
370 {
371 if( (color=str2color(value)) >= 0 )
372 options->alert_color = color;
373 }
374 else if( !strcasecmp(CONF_WIDE_CURSOR, name) )
375 {
376 options->wide_cursor = str2bool(value);
377 }
378 else
379 {
380 match_found = 0;
381 }
384 if( !match_found )
385 fprintf(stderr,
386 "Unknown configuration parameter: %s\n",
387 name);
388 #ifdef DEBUG
389 printf( " %s = %s %s\n",
390 name,
391 value,
392 match_found ? "" : "- UNKNOWN SETTING!" );
393 #endif
395 }
396 }
397 }
399 D(printf( "--\n\n" ));
401 if( free_filename )
402 g_free(filename);
404 return 0;
405 }
407 int
408 check_user_conf_dir(void)
409 {
410 int retval;
411 char *dirname = g_build_filename(g_get_home_dir(), "." PACKAGE, NULL);
413 if( g_file_test(dirname, G_FILE_TEST_IS_DIR) )
414 {
415 g_free(dirname);
416 return 0;
417 }
418 retval = mkdir(dirname, 0755);
419 g_free(dirname);
420 return retval;
421 }
423 char *
424 get_user_key_binding_filename(void)
425 {
426 return g_build_filename(g_get_home_dir(), "." PACKAGE, "keys", NULL);
427 }
430 int
431 read_configuration(options_t *options)
432 {
433 char *filename = NULL;
435 /* check for user configuration ~/.ncmpc/config */
436 filename = g_build_filename(g_get_home_dir(), "." PACKAGE, "config", NULL);
437 if( !g_file_test(filename, G_FILE_TEST_IS_REGULAR) )
438 {
439 g_free(filename);
440 filename = NULL;
441 }
443 /* check for global configuration SYSCONFDIR/ncmpc/config */
444 if( filename == NULL )
445 {
446 filename = g_build_filename(SYSCONFDIR, PACKAGE, "config", NULL);
447 if( !g_file_test(filename, G_FILE_TEST_IS_REGULAR) )
448 {
449 g_free(filename);
450 filename = NULL;
451 }
452 }
454 /* load configuration */
455 if( filename )
456 {
457 read_rc_file(filename, options);
458 g_free(filename);
459 filename = NULL;
460 }
462 /* check for user key bindings ~/.ncmpc/keys */
463 filename = get_user_key_binding_filename();
464 if( !g_file_test(filename, G_FILE_TEST_IS_REGULAR) )
465 {
466 g_free(filename);
467 filename = NULL;
468 }
470 /* check for global key bindings SYSCONFDIR/ncmpc/keys */
471 if( filename == NULL )
472 {
473 filename = g_build_filename(SYSCONFDIR, PACKAGE, "keys", NULL);
474 if( !g_file_test(filename, G_FILE_TEST_IS_REGULAR) )
475 {
476 g_free(filename);
477 filename = NULL;
478 }
479 }
481 /* load key bindings */
482 if( filename )
483 {
484 read_rc_file(filename, options);
485 g_free(filename);
486 filename = NULL;
487 }
489 return 0;
490 }