apps/misc.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2002 by Daniel Stenberg
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21 #include <stdlib.h>
  22 #include <ctype.h>
  23 #include "config.h"
  24 #include "misc.h"
  25 #include "lcd.h"
  26 #include "file.h"
  27 #ifdef __PCTOOL__
  28 #include <stdint.h>
  29 #include <stdarg.h>
  30 #include <stdio.h>
  31 #ifdef WPSEDITOR
  32 #include "string.h"
  33 #endif
  34 #else
  35 #include "sprintf.h"
  36 #include "appevents.h"
  37 #include "lang.h"
  38 #include "string.h"
  39 #include "dir.h"
  40 #include "lcd-remote.h"
  41 #include "errno.h"
  42 #include "system.h"
  43 #include "timefuncs.h"
  44 #include "screens.h"
  45 #include "talk.h"
  46 #include "mpeg.h"
  47 #include "audio.h"
  48 #include "mp3_playback.h"
  49 #include "settings.h"
  50 #include "storage.h"
  51 #include "ata_idle_notify.h"
  52 #include "kernel.h"
  53 #include "power.h"
  54 #include "powermgmt.h"
  55 #include "backlight.h"
  56 #include "version.h"
  57 #include "font.h"
  58 #include "splash.h"
  59 #include "tagcache.h"
  60 #include "scrobbler.h"
  61 #include "sound.h"
  62 #include "playlist.h"
  63 #include "yesno.h"
  64 #include "viewport.h"
  65
  66 #ifdef IPOD_ACCESSORY_PROTOCOL
  67 #include "iap.h"
  68 #endif
  69
  70 #if (CONFIG_STORAGE & STORAGE_MMC)
  71 #include "ata_mmc.h"
  72 #endif
  73 #include "tree.h"
  74 #include "eeprom_settings.h"
  75 #if defined(HAVE_RECORDING) && !defined(__PCTOOL__)
  76 #include "recording.h"
  77 #endif
  78 #if defined(HAVE_LCD_BITMAP) && !defined(__PCTOOL__)
  79 #include "bmp.h"
  80 #include "icons.h"
  81 #endif /* End HAVE_LCD_BITMAP */
  82 #include "gui/gwps-common.h"
  83 #include "bookmark.h"
  84
  85 #include "playback.h"
  86
  87 #ifdef BOOTFILE
  88 #if !defined(USB_NONE) && !defined(USB_IPODSTYLE)
  89 #include "rolo.h"
  90 #include "yesno.h"
  91 #endif
  92 #endif
  93
  94 /* Format a large-range value for output, using the appropriate unit so that
  95  * the displayed value is in the range 1 <= display < 1000 (1024 for "binary"
  96  * units) if possible, and 3 significant digits are shown. If a buffer is
  97  * given, the result is snprintf()'d into that buffer, otherwise the result is
  98  * voiced.*/
  99 char *output_dyn_value(char *buf, int buf_size, int value,
 100                        const unsigned char **units, bool bin_scale)
 101 {
 102     int scale = bin_scale ? 1024 : 1000;
 103     int fraction = 0;
 104     int unit_no = 0;
 105     char tbuf[5];
 106
 107     while (value >= scale)
 108     {
 109         fraction = value % scale;
 110         value /= scale;
 111         unit_no++;
 112     }
 113     if (bin_scale)
 114         fraction = fraction * 1000 / 1024;
 115
 116     if (value >= 100 || !unit_no)
 117         tbuf[0] = '\0';
 118     else if (value >= 10)
 119         snprintf(tbuf, sizeof(tbuf), "%01d", fraction / 100);
 120     else
 121         snprintf(tbuf, sizeof(tbuf), "%02d", fraction / 10);
 122
 123     if (buf)
 124     {
 125         if (strlen(tbuf))
 126             snprintf(buf, buf_size, "%d%s%s%s", value, str(LANG_POINT),
 127                      tbuf, P2STR(units[unit_no]));
 128         else
 129             snprintf(buf, buf_size, "%d%s", value, P2STR(units[unit_no]));
 130     }
 131     else
 132     {
 133         talk_fractional(tbuf, value, P2ID(units[unit_no]));
 134     }
 135     return buf;
 136 }
 137
 138 /* Ask the user if they really want to erase the current dynamic playlist
 139  * returns true if the playlist should be replaced */
 140 bool warn_on_pl_erase(void)
 141 {
 142     if (global_settings.warnon_erase_dynplaylist &&
 143         !global_settings.party_mode &&
 144         playlist_modified(NULL))
 145     {
 146         static const char *lines[] =
 147             {ID2P(LANG_WARN_ERASEDYNPLAYLIST_PROMPT)};
 148         static const struct text_message message={lines, 1};
 149
 150         return (gui_syncyesno_run(&message, NULL, NULL) == YESNO_YES);
 151     }
 152     else
 153         return true;
 154 }
 155
 156 /* Read (up to) a line of text from fd into buffer and return number of bytes
 157  * read (which may be larger than the number of bytes stored in buffer). If
 158  * an error occurs, -1 is returned (and buffer contains whatever could be
 159  * read). A line is terminated by a LF char. Neither LF nor CR chars are
 160  * stored in buffer.
 161  */
 162 int read_line(int fd, char* buffer, int buffer_size)
 163 {
 164     int count = 0;
 165     int num_read = 0;
 166
 167     errno = 0;
 168
 169     while (count < buffer_size)
 170     {
 171         unsigned char c;
 172
 173         if (1 != read(fd, &c, 1))
 174             break;
 175
 176         num_read++;
 177
 178         if ( c == '\n' )
 179             break;
 180
 181         if ( c == '\r' )
 182             continue;
 183
 184         buffer[count++] = c;
 185     }
 186
 187     buffer[MIN(count, buffer_size - 1)] = 0;
 188
 189     return errno ? -1 : num_read;
 190 }
 191
 192 /* Performance optimized version of the previous function. */
 193 int fast_readline(int fd, char *buf, int buf_size, void *parameters,
 194                   int (*callback)(int n, const char *buf, void *parameters))
 195 {
 196     char *p, *next;
 197     int rc, pos = 0;
 198     int count = 0;
 199
 200     while ( 1 )
 201     {
 202         next = NULL;
 203
 204         rc = read(fd, &buf[pos], buf_size - pos - 1);
 205         if (rc >= 0)
 206             buf[pos+rc] = '\0';
 207
 208         if ( (p = strchr(buf, '\r')) != NULL)
 209         {
 210             *p = '\0';
 211             next = ++p;
 212         }
 213         else
 214             p = buf;
 215
 216         if ( (p = strchr(p, '\n')) != NULL)
 217         {
 218             *p = '\0';
 219             next = ++p;
 220         }
 221
 222         rc = callback(count, buf, parameters);
 223         if (rc < 0)
 224             return rc;
 225
 226         count++;
 227         if (next)
 228         {
 229             pos = buf_size - ((long)next - (long)buf) - 1;
 230             memmove(buf, next, pos);
 231         }
 232         else
 233             break ;
 234     }
 235
 236     return 0;
 237 }
 238
 239 /* parse a line from a configuration file. the line format is:
 240
 241    name: value
 242
 243    Any whitespace before setting name or value (after ':') is ignored.
 244    A # as first non-whitespace character discards the whole line.
 245    Function sets pointers to null-terminated setting name and value.
 246    Returns false if no valid config entry was found.
 247 */
 248
 249 bool settings_parseline(char* line, char** name, char** value)
 250 {
 251     char* ptr;
 252
 253     line = skip_whitespace(line);
 254
 255     if ( *line == '#' )
 256         return false;
 257
 258     ptr = strchr(line, ':');
 259     if ( !ptr )
 260         return false;
 261
 262     *name = line;
 263     *ptr = 0;
 264     ptr++;
 265     ptr = skip_whitespace(ptr);
 266     *value = ptr;
 267     return true;
 268 }
 269
 270 static void system_flush(void)
 271 {
 272     scrobbler_shutdown();
 273     playlist_shutdown();
 274     tree_flush();
 275     call_storage_idle_notifys(true); /*doesnt work on usb and shutdown from ata thread */
 276 }
 277
 278 static void system_restore(void)
 279 {
 280     tree_restore();
 281     scrobbler_init();
 282 }
 283
 284 static bool clean_shutdown(void (*callback)(void *), void *parameter)
 285 {
 286 #ifdef SIMULATOR
 287     (void)callback;
 288     (void)parameter;
 289     bookmark_autobookmark();
 290     call_storage_idle_notifys(true);
 291     exit(0);
 292 #else
 293     long msg_id = -1;
 294     int i;
 295
 296     scrobbler_poweroff();
 297
 298 #if CONFIG_CHARGING && !defined(HAVE_POWEROFF_WHILE_CHARGING)
 299     if(!charger_inserted())
 300 #endif
 301     {
 302         bool batt_safe = battery_level_safe();
 303         int audio_stat = audio_status();
 304
 305         FOR_NB_SCREENS(i)
 306             screens[i].clear_display();
 307
 308         if (batt_safe)
 309         {
 310 #ifdef HAVE_TAGCACHE
 311             if (!tagcache_prepare_shutdown())
 312             {
 313                 cancel_shutdown();
 314                 splash(HZ, ID2P(LANG_TAGCACHE_BUSY));
 315                 return false;
 316             }
 317 #endif
 318             if (battery_level() > 10)
 319                 splash(0, str(LANG_SHUTTINGDOWN));
 320             else
 321             {
 322                 msg_id = LANG_WARNING_BATTERY_LOW;
 323                 splashf(0, "%s %s", str(LANG_WARNING_BATTERY_LOW),
 324                                     str(LANG_SHUTTINGDOWN));
 325             }
 326         }
 327         else
 328         {
 329             msg_id = LANG_WARNING_BATTERY_EMPTY;
 330             splashf(0, "%s %s", str(LANG_WARNING_BATTERY_EMPTY),
 331                                 str(LANG_SHUTTINGDOWN));
 332         }
 333
 334         if (global_settings.fade_on_stop
 335             && (audio_stat & AUDIO_STATUS_PLAY))
 336         {
 337             fade(false, false);
 338         }
 339
 340         if (batt_safe) /* do not save on critical battery */
 341         {
 342 #if defined(HAVE_RECORDING) && CONFIG_CODEC == SWCODEC
 343             if (audio_stat & AUDIO_STATUS_RECORD)
 344             {
 345                 rec_command(RECORDING_CMD_STOP);
 346                 /* wait for stop to complete */
 347                 while (audio_status() & AUDIO_STATUS_RECORD)
 348                     sleep(1);
 349             }
 350 #endif
 351             bookmark_autobookmark();
 352
 353             /* audio_stop_recording == audio_stop for HWCODEC */
 354             audio_stop();
 355
 356             if (callback != NULL)
 357                 callback(parameter);
 358
 359 #if CONFIG_CODEC != SWCODEC
 360             /* wait for audio_stop or audio_stop_recording to complete */
 361             while (audio_status())
 362                 sleep(1);
 363 #endif
 364
 365 #if defined(HAVE_RECORDING) && CONFIG_CODEC == SWCODEC
 366             audio_close_recording();
 367 #endif
 368
 369             if(global_settings.talk_menu)
 370             {
 371                 bool enqueue = false;
 372                 if(msg_id != -1)
 373                 {
 374                     talk_id(msg_id, enqueue);
 375                     enqueue = true;
 376                 }
 377                 talk_id(LANG_SHUTTINGDOWN, enqueue);
 378 #if CONFIG_CODEC == SWCODEC
 379                 voice_wait();
 380 #endif
 381             }
 382
 383             system_flush();
 384 #ifdef HAVE_EEPROM_SETTINGS
 385             if (firmware_settings.initialized)
 386             {
 387                 firmware_settings.disk_clean = true;
 388                 firmware_settings.bl_version = 0;
 389                 eeprom_settings_store();
 390             }
 391 #endif
 392         }
 393 #ifdef HAVE_DIRCACHE
 394         else
 395             dircache_disable();
 396 #endif
 397
 398         shutdown_hw();
 399     }
 400 #endif
 401     return false;
 402 }
 403
 404 bool list_stop_handler(void)
 405 {
 406     bool ret = false;
 407
 408     /* Stop the music if it is playing */
 409     if(audio_status())
 410     {
 411         if (!global_settings.party_mode)
 412         {
 413             if (global_settings.fade_on_stop)
 414                 fade(false, false);
 415             bookmark_autobookmark();
 416             audio_stop();
 417             ret = true;  /* bookmarking can make a refresh necessary */
 418         }
 419     }
 420 #if CONFIG_CHARGING
 421 #if (CONFIG_KEYPAD == RECORDER_PAD) && !defined(HAVE_SW_POWEROFF)
 422     else
 423     {
 424         if (charger_inserted())
 425             charging_splash();
 426         else
 427             shutdown_screen(); /* won't return if shutdown actually happens */
 428
 429         ret = true;  /* screen is dirty, caller needs to refresh */
 430     }
 431 #endif
 432 #ifndef HAVE_POWEROFF_WHILE_CHARGING
 433     {
 434         static long last_off = 0;
 435
 436         if (TIME_BEFORE(current_tick, last_off + HZ/2))
 437         {
 438             if (charger_inserted())
 439             {
 440                 charging_splash();
 441                 ret = true;  /* screen is dirty, caller needs to refresh */
 442             }
 443         }
 444         last_off = current_tick;
 445     }
 446 #endif
 447 #endif /* CONFIG_CHARGING */
 448     return ret;
 449 }
 450
 451 #if CONFIG_CHARGING
 452 static bool waiting_to_resume_play = false;
 453 static long play_resume_tick;
 454
 455 static void car_adapter_mode_processing(bool inserted)
 456 {
 457     if (global_settings.car_adapter_mode)
 458     {
 459         if(inserted)
 460         {
 461             /*
 462              * Just got plugged in, delay & resume if we were playing
 463              */
 464             if (audio_status() & AUDIO_STATUS_PAUSE)
 465             {
 466                 /* delay resume a bit while the engine is cranking */
 467                 play_resume_tick = current_tick + HZ*5;
 468                 waiting_to_resume_play = true;
 469             }
 470         }
 471         else
 472         {
 473             /*
 474              * Just got unplugged, pause if playing
 475              */
 476             if ((audio_status() & AUDIO_STATUS_PLAY) &&
 477                 !(audio_status() & AUDIO_STATUS_PAUSE))
 478             {
 479                 if (global_settings.fade_on_stop)
 480                     fade(false, false);
 481                 else
 482                     audio_pause();
 483             }
 484             waiting_to_resume_play = false;
 485         }
 486     }
 487 }
 488
 489 static void car_adapter_tick(void)
 490 {
 491     if (waiting_to_resume_play)
 492     {
 493         if (TIME_AFTER(current_tick, play_resume_tick))
 494         {
 495             if (audio_status() & AUDIO_STATUS_PAUSE)
 496             {
 497                 queue_broadcast(SYS_CAR_ADAPTER_RESUME, 0);
 498             }
 499             waiting_to_resume_play = false;
 500         }
 501     }
 502 }
 503
 504 void car_adapter_mode_init(void)
 505 {
 506     tick_add_task(car_adapter_tick);
 507 }
 508 #endif
 509
 510 #ifdef HAVE_HEADPHONE_DETECTION
 511 static void unplug_change(bool inserted)
 512 {
 513     static bool headphone_caused_pause = false;
 514
 515     if (global_settings.unplug_mode)
 516     {
 517         int audio_stat = audio_status();
 518         if (inserted)
 519         {
 520             if ((audio_stat & AUDIO_STATUS_PLAY) &&
 521                     headphone_caused_pause &&
 522                     global_settings.unplug_mode > 1 )
 523                 audio_resume();
 524             backlight_on();
 525             headphone_caused_pause = false;
 526         } else {
 527             if ((audio_stat & AUDIO_STATUS_PLAY) &&
 528                     !(audio_stat & AUDIO_STATUS_PAUSE))
 529             {
 530                 headphone_caused_pause = true;
 531                 audio_pause();
 532
 533                 if (global_settings.unplug_rw)
 534                 {
 535                     if (audio_current_track()->elapsed >
 536                             (unsigned long)(global_settings.unplug_rw*1000))
 537                         audio_ff_rewind(audio_current_track()->elapsed -
 538                                 (global_settings.unplug_rw*1000));
 539                     else
 540                         audio_ff_rewind(0);
 541                 }
 542             }
 543         }
 544     }
 545 }
 546 #endif
 547
 548 long default_event_handler_ex(long event, void (*callback)(void *), void *parameter)
 549 {
 550     switch(event)
 551     {
 552         case SYS_BATTERY_UPDATE:
 553             if(global_settings.talk_battery_level)
 554             {
 555                 talk_ids(true, VOICE_PAUSE, VOICE_PAUSE,
 556                          LANG_BATTERY_TIME,
 557                          TALK_ID(battery_level(), UNIT_PERCENT),
 558                          VOICE_PAUSE);
 559                 talk_force_enqueue_next();
 560             }
 561             break;
 562         case SYS_USB_CONNECTED:
 563             if (callback != NULL)
 564                 callback(parameter);
 565 #if (CONFIG_STORAGE & STORAGE_MMC)
 566             if (!mmc_touched() ||
 567                 (mmc_remove_request() == SYS_HOTSWAP_EXTRACTED))
 568 #endif
 569             {
 570                 system_flush();
 571 #ifdef BOOTFILE
 572 #if !defined(USB_NONE) && !defined(USB_IPODSTYLE)
 573                 check_bootfile(false); /* gets initial size */
 574 #endif
 575 #endif
 576                 usb_screen();
 577 #ifdef BOOTFILE
 578 #if !defined(USB_NONE) && !defined(USB_IPODSTYLE)
 579                 check_bootfile(true);
 580 #endif
 581 #endif
 582                 system_restore();
 583             }
 584             return SYS_USB_CONNECTED;
 585         case SYS_POWEROFF:
 586             if (!clean_shutdown(callback, parameter))
 587                 return SYS_POWEROFF;
 588             break;
 589 #if CONFIG_CHARGING
 590         case SYS_CHARGER_CONNECTED:
 591             car_adapter_mode_processing(true);
 592             return SYS_CHARGER_CONNECTED;
 593
 594         case SYS_CHARGER_DISCONNECTED:
 595             car_adapter_mode_processing(false);
 596             return SYS_CHARGER_DISCONNECTED;
 597
 598         case SYS_CAR_ADAPTER_RESUME:
 599             audio_resume();
 600             return SYS_CAR_ADAPTER_RESUME;
 601 #endif
 602 #ifdef HAVE_HEADPHONE_DETECTION
 603         case SYS_PHONE_PLUGGED:
 604             unplug_change(true);
 605             return SYS_PHONE_PLUGGED;
 606
 607         case SYS_PHONE_UNPLUGGED:
 608             unplug_change(false);
 609             return SYS_PHONE_UNPLUGGED;
 610 #endif
 611 #ifdef IPOD_ACCESSORY_PROTOCOL
 612         case SYS_IAP_PERIODIC:
 613             iap_periodic();
 614             return SYS_IAP_PERIODIC;
 615         case SYS_IAP_HANDLEPKT:
 616             iap_handlepkt();
 617             return SYS_IAP_HANDLEPKT;
 618 #endif
 619     }
 620     return 0;
 621 }
 622
 623 long default_event_handler(long event)
 624 {
 625     return default_event_handler_ex(event, NULL, NULL);
 626 }
 627
 628 int show_logo( void )
 629 {
 630 #ifdef HAVE_LCD_BITMAP
 631     char version[32];
 632     int font_h, font_w;
 633
 634     snprintf(version, sizeof(version), "Ver. %s", appsversion);
 635
 636     lcd_clear_display();
 637 #ifdef SANSA_CLIP   /* display the logo in the blue area of the screen */
 638     lcd_setfont(FONT_SYSFIXED);
 639     lcd_getstringsize((unsigned char *)"A", &font_w, &font_h);
 640     lcd_putsxy((LCD_WIDTH/2) - ((strlen(version)*font_w)/2),
 641                0, (unsigned char *)version);
 642     lcd_bitmap(rockboxlogo, 0, 16, BMPWIDTH_rockboxlogo, BMPHEIGHT_rockboxlogo);
 643 #else
 644     lcd_bitmap(rockboxlogo, 0, 10, BMPWIDTH_rockboxlogo, BMPHEIGHT_rockboxlogo);
 645     lcd_setfont(FONT_SYSFIXED);
 646     lcd_getstringsize((unsigned char *)"A", &font_w, &font_h);
 647     lcd_putsxy((LCD_WIDTH/2) - ((strlen(version)*font_w)/2),
 648                LCD_HEIGHT-font_h, (unsigned char *)version);
 649 #endif
 650     lcd_setfont(FONT_UI);
 651
 652 #else
 653     char *rockbox = "  ROCKbox!";
 654
 655     lcd_clear_display();
 656     lcd_double_height(true);
 657     lcd_puts(0, 0, rockbox);
 658     lcd_puts_scroll(0, 1, appsversion);
 659 #endif
 660     lcd_update();
 661
 662 #ifdef HAVE_REMOTE_LCD
 663     lcd_remote_clear_display();
 664     lcd_remote_bitmap(remote_rockboxlogo, 0, 10, BMPWIDTH_remote_rockboxlogo,
 665                       BMPHEIGHT_remote_rockboxlogo);
 666     lcd_remote_setfont(FONT_SYSFIXED);
 667     lcd_remote_getstringsize((unsigned char *)"A", &font_w, &font_h);
 668     lcd_remote_putsxy((LCD_REMOTE_WIDTH/2) - ((strlen(version)*font_w)/2),
 669                        LCD_REMOTE_HEIGHT-font_h, (unsigned char *)version);
 670     lcd_remote_setfont(FONT_UI);
 671     lcd_remote_update();
 672 #endif
 673
 674     return 0;
 675 }
 676
 677 #if CONFIG_CODEC == SWCODEC
 678 int get_replaygain_mode(bool have_track_gain, bool have_album_gain)
 679 {
 680     int type;
 681
 682     bool track = ((global_settings.replaygain_type == REPLAYGAIN_TRACK)
 683         || ((global_settings.replaygain_type == REPLAYGAIN_SHUFFLE)
 684             && global_settings.playlist_shuffle));
 685
 686     type = (!track && have_album_gain) ? REPLAYGAIN_ALBUM
 687         : have_track_gain ? REPLAYGAIN_TRACK : -1;
 688
 689     return type;
 690 }
 691 #endif
 692
 693 #ifdef BOOTFILE
 694 #if !defined(USB_NONE) && !defined(USB_IPODSTYLE)
 695 /*
 696     memorize/compare details about the BOOTFILE
 697     we don't use dircache because it may not be up to date after
 698     USB disconnect (scanning in the background)
 699 */
 700 void check_bootfile(bool do_rolo)
 701 {
 702     static unsigned short wrtdate = 0;
 703     static unsigned short wrttime = 0;
 704     DIR* dir = NULL;
 705     struct dirent* entry = NULL;
 706
 707     /* 1. open BOOTDIR and find the BOOTFILE dir entry */
 708     dir = opendir(BOOTDIR);
 709
 710     if(!dir) return; /* do we want an error splash? */
 711
 712     /* loop all files in BOOTDIR */
 713     while(0 != (entry = readdir(dir)))
 714     {
 715         if(!strcasecmp(entry->d_name, BOOTFILE))
 716         {
 717             /* found the bootfile */
 718             if(wrtdate && do_rolo)
 719             {
 720                 if((entry->wrtdate != wrtdate) ||
 721                    (entry->wrttime != wrttime))
 722                 {
 723                     static const char *lines[] = { ID2P(LANG_BOOT_CHANGED),
 724                                                    ID2P(LANG_REBOOT_NOW) };
 725                     static const struct text_message message={ lines, 2 };
 726                     button_clear_queue(); /* Empty the keyboard buffer */
 727                     if(gui_syncyesno_run(&message, NULL, NULL) == YESNO_YES)
 728                     rolo_load(BOOTDIR "/" BOOTFILE);
 729                 }
 730             }
 731             wrtdate = entry->wrtdate;
 732             wrttime = entry->wrttime;
 733         }
 734     }
 735     closedir(dir);
 736 }
 737 #endif
 738 #endif
 739
 740 /* check range, set volume and save settings */
 741 void setvol(void)
 742 {
 743     const int min_vol = sound_min(SOUND_VOLUME);
 744     const int max_vol = sound_max(SOUND_VOLUME);
 745     if (global_settings.volume < min_vol)
 746         global_settings.volume = min_vol;
 747     if (global_settings.volume > max_vol)
 748         global_settings.volume = max_vol;
 749     sound_set_volume(global_settings.volume);
 750     settings_save();
 751 }
 752
 753 char* strrsplt(char* str, int c)
 754 {
 755     char* s = strrchr(str, c);
 756
 757     if (s != NULL)
 758     {
 759         *s++ = '\0';
 760     }
 761     else
 762     {
 763         s = str;
 764     }
 765
 766     return s;
 767 }
 768
 769 char* skip_whitespace(char* const str)
 770 {
 771     char *s = str;
 772
 773     while (isspace(*s))
 774         s++;
 775
 776     return s;
 777 }
 778
 779 /* Test file existence, using dircache of possible */
 780 bool file_exists(const char *file)
 781 {
 782     int fd;
 783
 784     if (!file || strlen(file) <= 0)
 785         return false;
 786
 787 #ifdef HAVE_DIRCACHE
 788     if (dircache_is_enabled())
 789         return (dircache_get_entry_ptr(file) != NULL);
 790 #endif
 791
 792     fd = open(file, O_RDONLY);
 793     if (fd < 0)
 794         return false;
 795     close(fd);
 796     return true;
 797 }
 798
 799 bool dir_exists(const char *path)
 800 {
 801     DIR* d = opendir(path);
 802     if (!d)
 803         return false;
 804     closedir(d);
 805     return true;
 806 }
 807
 808 /*
 809  * removes the extension of filename (if it doesn't start with a .)
 810  * puts the result in buffer
 811  */
 812 char *strip_extension(char* buffer, int buffer_size, const char *filename)
 813 {
 814     char *dot = strrchr(filename, '.');
 815     int len;
 816
 817     if (buffer_size <= 0)
 818     {
 819         return NULL;
 820     }
 821
 822     buffer_size--;  /* Make room for end nil */
 823
 824     if (dot != 0 && filename[0] != '.')
 825     {
 826         len = dot - filename;
 827         len = MIN(len, buffer_size);
 828         strncpy(buffer, filename, len);
 829     }
 830     else
 831     {
 832         len = buffer_size;
 833         strncpy(buffer, filename, buffer_size);
 834     }
 835
 836     buffer[len] = 0;
 837
 838     return buffer;
 839 }
 840 #endif /* !defined(__PCTOOL__) */
 841
 842 /* Format time into buf.
 843  *
 844  * buf      - buffer to format to.
 845  * buf_size - size of buffer.
 846  * t        - time to format, in milliseconds.
 847  */
 848 void format_time(char* buf, int buf_size, long t)
 849 {
 850     if ( t < 3600000 )
 851     {
 852       snprintf(buf, buf_size, "%d:%02d",
 853                (int) (t / 60000), (int) (t % 60000 / 1000));
 854     }
 855     else
 856     {
 857       snprintf(buf, buf_size, "%d:%02d:%02d",
 858                (int) (t / 3600000), (int) (t % 3600000 / 60000),
 859                (int) (t % 60000 / 1000));
 860     }
 861 }
 862
 863
 864 /** Open a UTF-8 file and set file descriptor to first byte after BOM.
 865  *  If no BOM is present this behaves like open().
 866  *  If the file is opened for writing and O_TRUNC is set, write a BOM to
 867  *  the opened file and leave the file pointer set after the BOM.
 868  */
 869 #define BOM "\xef\xbb\xbf"
 870 #define BOM_SIZE 3
 871
 872 int open_utf8(const char* pathname, int flags)
 873 {
 874     int fd;
 875     unsigned char bom[BOM_SIZE];
 876
 877     fd = open(pathname, flags);
 878     if(fd < 0)
 879         return fd;
 880
 881     if(flags & (O_TRUNC | O_WRONLY))
 882     {
 883         write(fd, BOM, BOM_SIZE);
 884     }
 885     else
 886     {
 887         read(fd, bom, BOM_SIZE);
 888         /* check for BOM */
 889         if(memcmp(bom, BOM, BOM_SIZE))
 890             lseek(fd, 0, SEEK_SET);
 891     }
 892     return fd;
 893 }
 894
 895
 896 #ifdef HAVE_LCD_COLOR
 897 /*
 898  * Helper function to convert a string of 6 hex digits to a native colour
 899  */
 900
 901 static int hex2dec(int c)
 902 {
 903    return  (((c) >= '0' && ((c) <= '9')) ? (c) - '0' :
 904                                            (toupper(c)) - 'A' + 10);
 905 }
 906
 907 int hex_to_rgb(const char* hex, int* color)
 908 {
 909     int red, green, blue;
 910     int i = 0;
 911
 912     while ((i < 6) && (isxdigit(hex[i])))
 913         i++;
 914
 915     if (i < 6)
 916         return -1;
 917
 918     red = (hex2dec(hex[0]) << 4) | hex2dec(hex[1]);
 919     green = (hex2dec(hex[2]) << 4) | hex2dec(hex[3]);
 920     blue = (hex2dec(hex[4]) << 4) | hex2dec(hex[5]);
 921
 922     *color = LCD_RGBPACK(red,green,blue);
 923
 924     return 0;
 925 }
 926 #endif /* HAVE_LCD_COLOR */
 927
 928 #ifdef HAVE_LCD_BITMAP
 929 /* A simplified scanf - used (at time of writing) by wps parsing functions.
 930
 931    fmt - char array specifying the format of each list option.  Valid values
 932          are:  d - int
 933                s - string (sets pointer to string, without copying)
 934                c - hex colour (RGB888 - e.g. ff00ff)
 935                g - greyscale "colour" (0-3)
 936    set_vals - if not NULL 1 is set in the bitplace if the item was read OK
 937                 0 if not read.
 938                 first item is LSB, (max 32 items! )
 939                 Stops parseing if an item is invalid unless the item == '-'
 940    sep - list separator (e.g. ',' or '|')
 941    str  - string to parse, must be terminated by 0 or sep
 942    ... - pointers to store the parsed values
 943
 944    return value - pointer to char after parsed data, 0 if there was an error.
 945
 946 */
 947
 948 /* '0'-'3' are ASCII 0x30 to 0x33 */
 949 #define is0123(x) (((x) & 0xfc) == 0x30)
 950
 951 const char* parse_list(const char *fmt, uint32_t *set_vals,
 952                        const char sep, const char* str, ...)
 953 {
 954     va_list ap;
 955     const char* p = str, *f = fmt;
 956     const char** s;
 957     int* d;
 958     bool set;
 959     int i=0;
 960
 961     va_start(ap, str);
 962     if (set_vals)
 963         *set_vals = 0;
 964     while (*fmt)
 965     {
 966         /* Check for separator, if we're not at the start */
 967         if (f != fmt)
 968         {
 969             if (*p != sep)
 970                 goto err;
 971             p++;
 972         }
 973         set = false;
 974         switch (*fmt++)
 975         {
 976             case 's': /* string - return a pointer to it (not a copy) */
 977                 s = va_arg(ap, const char **);
 978
 979                 *s = p;
 980                 while (*p && *p != sep)
 981                    p++;
 982                 set = (s[0][0]!='-') && (s[0][1]!=sep) ;
 983                 break;
 984
 985             case 'd': /* int */
 986                 d = va_arg(ap, int*);
 987                 if (!isdigit(*p))
 988                 {
 989                     if (!set_vals || *p != '-')
 990                         goto err;
 991                     while (*p && *p != sep)
 992                         p++;
 993                 }
 994                 else
 995                 {
 996                    *d = *p++ - '0';
 997                     while (isdigit(*p))
 998                        *d = (*d * 10) + (*p++ - '0');
 999                     set = true;
1000                 }
1001
1002                 break;
1003
1004 #ifdef HAVE_LCD_COLOR
1005             case 'c': /* colour (rrggbb - e.g. f3c1a8) */
1006                 d = va_arg(ap, int*);
1007
1008                 if (hex_to_rgb(p, d) < 0)
1009                 {
1010                     if (!set_vals || *p != '-')
1011                         goto err;
1012                     while (*p && *p != sep)
1013                         p++;
1014                 }
1015                 else
1016                 {
1017                     p += 6;
1018                     set = true;
1019                 }
1020
1021                 break;
1022 #endif
1023
1024 #if LCD_DEPTH == 2 || (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH == 2)
1025             case 'g': /* greyscale colour (0-3) */
1026                 d = va_arg(ap, int*);
1027
1028                 if (is0123(*p))
1029                 {
1030                     *d = *p++ - '0';
1031                     set = true;
1032                 }
1033                 else if (!set_vals || *p != '-')
1034                     goto err;
1035                 else
1036                 {
1037                     while (*p && *p != sep)
1038                         p++;
1039                 }
1040
1041                 break;
1042 #endif
1043
1044             default:  /* Unknown format type */
1045                 goto err;
1046                 break;
1047         }
1048         if (set_vals && set)
1049             *set_vals |= (1<<i);
1050         i++;
1051     }
1052
1053     va_end(ap);
1054     return p;
1055
1056 err:
1057     va_end(ap);
1058     return 0;
1059 }
1060 #endif