1 /*
2 * (c) 2006 by Kalle Wallin <kaw@linux.se>
3 * Copyright (C) 2008 Max Kellermann <max@duempel.org>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 *
18 */
20 #include "config.h"
21 #ifndef DISABLE_LYRICS_SCREEN
22 #include <sys/stat.h>
23 #include "ncmpc.h"
24 #include "options.h"
25 #include "mpdclient.h"
26 #include "command.h"
27 #include "screen.h"
28 #include "screen_utils.h"
29 #include "strfsong.h"
30 #include "lyrics.h"
31 #include "gcc.h"
33 #define _GNU_SOURCE
34 #include <stdlib.h>
35 #include <string.h>
36 #include <glib.h>
37 #include <ncurses.h>
38 #include <unistd.h>
39 #include <stdio.h>
41 static list_window_t *lw = NULL;
43 static struct {
44 const struct mpd_song *song;
46 char *artist, *title;
48 struct lyrics_loader *loader;
50 GPtrArray *lines;
51 } current;
53 static void
54 screen_lyrics_abort(void)
55 {
56 if (current.loader != NULL) {
57 lyrics_free(current.loader);
58 current.loader = NULL;
59 }
61 if (current.artist != NULL) {
62 g_free(current.artist);
63 current.artist = NULL;
64 }
66 if (current.title != NULL) {
67 g_free(current.title);
68 current.artist = NULL;
69 }
71 current.song = NULL;
72 }
74 static void
75 screen_lyrics_clear(void)
76 {
77 guint i;
79 for (i = 0; i < current.lines->len; ++i)
80 g_free(g_ptr_array_index(current.lines, i));
82 g_ptr_array_set_size(current.lines, 0);
83 }
85 static void
86 lyrics_paint(mpdclient_t *c);
88 /**
89 * Repaint and update the screen.
90 */
91 static void
92 lyrics_repaint(void)
93 {
94 lyrics_paint(NULL);
95 wrefresh(lw->w);
96 }
98 /**
99 * Repaint and update the screen, if it is currently active.
100 */
101 static void
102 lyrics_repaint_if_active(void)
103 {
104 if (get_cur_mode_id() == 104) { /* XXX don't use the literal number */
105 lyrics_repaint();
107 /* XXX repaint the screen title */
108 }
109 }
111 static void
112 screen_lyrics_set(const GString *str)
113 {
114 const char *p, *eol, *next;
116 screen_lyrics_clear();
118 p = str->str;
119 while ((eol = strchr(p, '\n')) != NULL) {
120 char *line;
122 next = eol + 1;
124 /* strip whitespace at end */
126 while (eol > p && (unsigned char)eol[-1] <= 0x20)
127 --eol;
129 /* create copy and append it to current.lines*/
131 line = g_malloc(eol - p + 1);
132 memcpy(line, p, eol - p);
133 line[eol - p] = 0;
135 g_ptr_array_add(current.lines, line);
137 /* reset control characters */
139 for (eol = line + (eol - p); line < eol; ++line)
140 if ((unsigned char)*line < 0x20)
141 *line = ' ';
143 p = next;
144 }
146 if (*p != 0)
147 g_ptr_array_add(current.lines, g_strdup(p));
149 /* paint new data */
151 lyrics_repaint_if_active();
152 }
154 static void
155 screen_lyrics_callback(const GString *result, mpd_unused void *data)
156 {
157 assert(current.loader != NULL);
159 if (result != NULL)
160 screen_lyrics_set(result);
161 else
162 screen_status_message (_("No lyrics"));
164 lyrics_free(current.loader);
165 current.loader = NULL;
166 }
168 static void
169 screen_lyrics_load(struct mpd_song *song)
170 {
171 char buffer[MAX_SONGNAME_LENGTH];
173 assert(song != NULL);
175 screen_lyrics_abort();
176 screen_lyrics_clear();
178 current.song = song;
180 strfsong(buffer, sizeof(buffer), "%artist%", song);
181 current.artist = g_strdup(buffer);
183 strfsong(buffer, sizeof(buffer), "%title%", song);
184 current.title = g_strdup(buffer);
186 current.loader = lyrics_load(current.artist, current.title,
187 screen_lyrics_callback, NULL);
188 }
190 static FILE *create_lyr_file(const char *artist, const char *title)
191 {
192 char path[1024];
194 snprintf(path, 1024, "%s/.lyrics",
195 getenv("HOME"));
196 mkdir(path, S_IRWXU);
198 snprintf(path, 1024, "%s/.lyrics/%s - %s.txt",
199 getenv("HOME"), artist, title);
201 return fopen(path, "w");
202 }
204 static int store_lyr_hd(void)
205 {
206 FILE *lyr_file;
207 unsigned i;
209 lyr_file = create_lyr_file(current.artist, current.title);
210 if (lyr_file == NULL)
211 return -1;
213 for (i = 0; i < current.lines->len; ++i)
214 fprintf(lyr_file, "%s\n",
215 (const char*)g_ptr_array_index(current.lines, i));
217 fclose(lyr_file);
218 return 0;
219 }
221 static const char *
222 list_callback(unsigned idx, mpd_unused int *highlight, mpd_unused void *data)
223 {
224 if (idx >= current.lines->len)
225 return NULL;
227 return g_ptr_array_index(current.lines, idx);
228 }
231 static void
232 lyrics_screen_init(WINDOW *w, int cols, int rows)
233 {
234 current.lines = g_ptr_array_new();
235 lw = list_window_init(w, cols, rows);
236 lw->flags = LW_HIDE_CURSOR;
237 }
239 static void
240 lyrics_resize(int cols, int rows)
241 {
242 lw->cols = cols;
243 lw->rows = rows;
244 }
246 static void
247 lyrics_exit(void)
248 {
249 list_window_free(lw);
251 screen_lyrics_abort();
252 screen_lyrics_clear();
254 g_ptr_array_free(current.lines, TRUE);
255 current.lines = NULL;
256 }
258 static void
259 lyrics_open(mpd_unused screen_t *screen, mpdclient_t *c)
260 {
261 if (c->song != NULL && c->song != current.song)
262 screen_lyrics_load(c->song);
263 }
266 static const char *
267 lyrics_title(char *str, size_t size)
268 {
269 if (current.loader != NULL)
270 return "Lyrics (loading)";
271 else if (current.artist != NULL && current.title != NULL &&
272 current.lines->len > 0) {
273 snprintf(str, size, "Lyrics: %s - %s",
274 current.artist, current.title);
275 return str;
276 } else
277 return "Lyrics";
278 }
280 static void
281 lyrics_paint(mpd_unused mpdclient_t *c)
282 {
283 list_window_paint(lw, list_callback, NULL);
284 }
286 static int
287 lyrics_cmd(screen_t *screen, mpdclient_t *c, command_t cmd)
288 {
289 if (list_window_scroll_cmd(lw, current.lines->len, cmd)) {
290 lyrics_repaint();
291 return 1;
292 }
294 switch(cmd) {
295 case CMD_INTERRUPT:
296 if (current.loader != NULL) {
297 screen_lyrics_abort();
298 screen_lyrics_clear();
299 }
300 return 1;
301 case CMD_ADD:
302 if (current.loader == NULL && current.artist != NULL &&
303 current.title != NULL && store_lyr_hd() == 0)
304 screen_status_message (_("Lyrics saved!"));
305 return 1;
306 case CMD_LYRICS_UPDATE:
307 if (c->song != NULL) {
308 screen_lyrics_load(c->song);
309 lyrics_repaint();
310 }
311 return 1;
312 default:
313 break;
314 }
316 lw->selected = lw->start+lw->rows;
317 if (screen_find(screen,
318 lw, current.lines->len,
319 cmd, list_callback, NULL)) {
320 /* center the row */
321 list_window_center(lw, current.lines->len, lw->selected);
322 lyrics_repaint();
323 return 1;
324 }
326 return 0;
327 }
329 const struct screen_functions screen_lyrics = {
330 .init = lyrics_screen_init,
331 .exit = lyrics_exit,
332 .open = lyrics_open,
333 .close = NULL,
334 .resize = lyrics_resize,
335 .paint = lyrics_paint,
336 .cmd = lyrics_cmd,
337 .get_title = lyrics_title,
338 };
340 #endif /* ENABLE_LYRICS_SCREEN */