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rockbox/apps/plugins/properties.c
Peter D'Hoye 1936f7c460 Bugfix: recursive directory properties could not be aborted 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11751 a1c6a512-1295-4272-9138-f99709370657
2006-12-13 19:52:08 +00:00

360 lines
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006 Peter D'Hoye
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "plugin.h"
PLUGIN_HEADER
static struct plugin_api* rb;
bool its_a_dir = false;
char str_filename[MAX_PATH];
char str_dirname[MAX_PATH];
char str_size[64];
char str_dircount[64];
char str_filecount[64];
char str_date[64];
char str_time[64];
static char* filesize2string(long long size, char* pstr, int len)
{
/* margin set at 10K boundary: 10239 B +1 => 10 KB
routine below is 200 bytes smaller than cascaded if/else :)
not using build-in function because of huge values (long long) */
const char* kgb[4] = { "B", "KB", "MB", "GB" };
int i = 0;
while(true)
{
if((size < 10240) || (i > 2))
{
/* depends on the order in the above array */
rb->snprintf(pstr, len, "%ld %s", (long)size, kgb[i]);
break;
}
size >>= 10; /* div by 1024 */
i++;
}
return pstr;
}
static bool file_properties(char* selected_file)
{
bool found = false;
char tstr[MAX_PATH];
#ifdef HAVE_DIRCACHE
DIRCACHED* dir;
struct dircache_entry* entry;
#else
DIR* dir;
struct dirent* entry;
#endif
char* ptr = rb->strrchr(selected_file, '/') + 1;
int dirlen = (ptr - selected_file);
rb->strncpy(tstr, selected_file, dirlen);
tstr[dirlen] = 0;
#ifdef HAVE_DIRCACHE
dir = rb->opendir_cached(tstr);
#else
dir = rb->opendir(tstr);
#endif
if (dir)
{
#ifdef HAVE_DIRCACHE
while(0 != (entry = rb->readdir_cached(dir)))
#else
while(0 != (entry = rb->readdir(dir)))
#endif
{
if(!rb->strcmp(entry->d_name, selected_file+dirlen))
{
rb->snprintf(str_dirname, sizeof str_dirname, "Path: %s",
tstr);
rb->snprintf(str_filename, sizeof str_filename, "Name: %s",
selected_file+dirlen);
rb->snprintf(str_size, sizeof str_size, "Size: %s",
filesize2string(entry->size, tstr, sizeof tstr));
rb->snprintf(str_date, sizeof str_date, "Date: %04d/%02d/%02d",
((entry->wrtdate >> 9 ) & 0x7F) + 1980, /* year */
((entry->wrtdate >> 5 ) & 0x0F), /* month */
((entry->wrtdate ) & 0x1F)); /* day */
rb->snprintf(str_time, sizeof str_time, "Time: %02d:%02d",
((entry->wrttime >> 11) & 0x1F), /* hour */
((entry->wrttime >> 5 ) & 0x3F)); /* minutes */
found = true;
break;
}
}
#ifdef HAVE_DIRCACHE
rb->closedir_cached(dir);
#else
rb->closedir(dir);
#endif
}
return found;
}
typedef struct {
char dirname[MAX_PATH];
int len;
unsigned int dc;
unsigned int fc;
long long bc;
char tstr[64];
char tstr2[64];
} DPS;
static bool _dir_properties(DPS* dps)
{
/* recursively scan directories in search of files
and informs the user of the progress */
bool result;
int dirlen;
#ifdef HAVE_DIRCACHE
DIRCACHED* dir;
struct dircache_entry* entry;
#else
DIR* dir;
struct dirent* entry;
#endif
result = true;
dirlen = rb->strlen(dps->dirname);
#ifdef HAVE_DIRCACHE
dir = rb->opendir_cached(dps->dirname);
#else
dir = rb->opendir(dps->dirname);
#endif
if (!dir)
return false; /* open error */
/* walk through the directory content */
#ifdef HAVE_DIRCACHE
while(result && (0 != (entry = rb->readdir_cached(dir))))
#else
while(result && (0 != (entry = rb->readdir(dir))))
#endif
{
/* append name to current directory */
rb->snprintf(dps->dirname+dirlen, dps->len-dirlen, "/%s",
entry->d_name);
if (entry->attribute & ATTR_DIRECTORY)
{
if (!rb->strcmp((char *)entry->d_name, ".") ||
!rb->strcmp((char *)entry->d_name, ".."))
continue; /* skip these */
dps->dc++; /* new directory */
rb->lcd_clear_display();
rb->lcd_puts(0,0,"SCANNING...");
rb->lcd_puts(0,1,dps->dirname);
rb->lcd_puts(0,2,entry->d_name);
rb->snprintf(dps->tstr, 64, "Directories: %d", dps->dc);
rb->lcd_puts(0,3,dps->tstr);
rb->snprintf(dps->tstr, 64, "Files: %d", dps->fc);
rb->lcd_puts(0,4,dps->tstr);
rb->snprintf(dps->tstr, 64, "Size: %s",
filesize2string(dps->bc, dps->tstr2, 64));
rb->lcd_puts(0,5,dps->tstr);
#ifdef HAVE_LCD_BITMAP
rb->lcd_update();
#endif
/* recursion */
result = _dir_properties(dps);
}
else
{
dps->fc++; /* new file */
dps->bc += entry->size;
}
if(ACTION_STD_CANCEL == rb->get_action(CONTEXT_STD,TIMEOUT_NOBLOCK))
result = false;
rb->yield();
}
#ifdef HAVE_DIRCACHE
rb->closedir_cached(dir);
#else
rb->closedir(dir);
#endif
return result;
}
static bool dir_properties(char* selected_file)
{
DPS dps;
char tstr[64];
rb->strncpy(dps.dirname, selected_file, MAX_PATH);
dps.len = MAX_PATH;
dps.dc = 0;
dps.fc = 0;
dps.bc = 0;
if(false == _dir_properties(&dps))
return false;
rb->snprintf(str_dirname, MAX_PATH, selected_file);
rb->snprintf(str_dircount, sizeof str_dircount, "Subdirs: %d", dps.dc);
rb->snprintf(str_filecount, sizeof str_filecount, "Files: %d", dps.fc);
rb->snprintf(str_size, sizeof str_size, "Size: %s",
filesize2string(dps.bc, tstr, sizeof tstr));
return true;
}
char * get_props(int selected_item, void* data, char *buffer)
{
(void)data;
switch(selected_item)
{
case 0:
rb->strcpy(buffer, str_dirname);
break;
case 1:
rb->strcpy(buffer, its_a_dir ? str_dircount : str_filename);
break;
case 2:
rb->strcpy(buffer, its_a_dir ? str_filecount : str_size);
break;
case 3:
rb->strcpy(buffer, its_a_dir ? str_size : str_date);
break;
case 4:
rb->strcpy(buffer, its_a_dir ? "" : str_time);
break;
default:
rb->strcpy(buffer, "ERROR");
break;
}
return buffer;
}
enum plugin_status plugin_start(struct plugin_api* api, void* file)
{
rb = api;
struct gui_synclist properties_lists;
int button;
bool prev_show_statusbar;
bool quit = false;
/* determine if it's a file or a directory */
bool found = false;
#ifdef HAVE_DIRCACHE
DIRCACHED* dir;
struct dircache_entry* entry;
#else
DIR* dir;
struct dirent* entry;
#endif
char* ptr = rb->strrchr((char*)file, '/') + 1;
int dirlen = (ptr - (char*)file);
rb->strncpy(str_dirname, (char*)file, dirlen);
str_dirname[dirlen] = 0;
#ifdef HAVE_DIRCACHE
dir = rb->opendir_cached(str_dirname);
#else
dir = rb->opendir(str_dirname);
#endif
if (dir)
{
#ifdef HAVE_DIRCACHE
while(0 != (entry = rb->readdir_cached(dir)))
#else
while(0 != (entry = rb->readdir(dir)))
#endif
{
if(!rb->strcmp(entry->d_name, file+dirlen))
{
its_a_dir = entry->attribute & ATTR_DIRECTORY ? true : false;
found = true;
break;
}
}
#ifdef HAVE_DIRCACHE
rb->closedir_cached(dir);
#else
rb->closedir(dir);
#endif
}
/* now we know if it's a file or a dir or maybe something failed */
if(!found)
{
/* weird: we couldn't find the entry. This Should Never Happen (TM) */
rb->lcd_clear_display();
rb->lcd_puts(0,0,"File/Dir not found:");
rb->lcd_puts(0,1,(char*)file);
#ifdef HAVE_LCD_BITMAP
rb->lcd_update();
#endif
rb->action_userabort(TIMEOUT_BLOCK);
return PLUGIN_OK;
}
/* get the info */
if(its_a_dir)
{
if(!dir_properties((char*)file))
return PLUGIN_OK;
}
else
{
if(!file_properties((char*)file))
return PLUGIN_OK;
}
/* prepare the list for the user */
prev_show_statusbar = rb->global_settings->statusbar;
rb->global_settings->statusbar = false;
rb->gui_synclist_init(&properties_lists, &get_props, file, false, 1);
rb->gui_synclist_set_title(&properties_lists, its_a_dir ?
"Directory properties" :
"File properties", NOICON);
rb->gui_synclist_set_icon_callback(&properties_lists, NULL);
rb->gui_synclist_set_nb_items(&properties_lists, its_a_dir ? 4 : 5);
rb->gui_synclist_limit_scroll(&properties_lists, true);
rb->gui_synclist_select_item(&properties_lists, 0);
rb->gui_synclist_draw(&properties_lists);
while(!quit)
{
button = rb->get_action(CONTEXT_LIST,TIMEOUT_BLOCK);
if (rb->gui_synclist_do_button(&properties_lists,button,LIST_WRAP_ON))
continue;
switch(button)
{
case ACTION_STD_CANCEL:
quit = true;
break;
default:
if (rb->default_event_handler(button) == SYS_USB_CONNECTED)
{
rb->global_settings->statusbar = prev_show_statusbar;
return PLUGIN_USB_CONNECTED;
}
}
}
rb->global_settings->statusbar = prev_show_statusbar;
rb->action_signalscreenchange();
return PLUGIN_OK;
}
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