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rockbox/apps/plugins/disktidy.c
Thomas Martitz cae4ae2c71 Second try: Introduce plugin_crt0.c that every plugin links. 
It handles exit() properly, calling the handler also when the plugin returns
normally (also make exit() more standard compliant while at it).
It also holds PLUGIN_HEADER, so that it doesn't need to be in each plugin anymore.

To work better together with callbacks passed to rb->default_event_handler_ex() introduce exit_on_usb() which will call the exit handler before showing the usb screen and exit() after it.
In most cases rb->default_event_handler_ex() was passed a callback which was manually called at all other return points. This can now be done via atexit().

In future plugin_crt0.c could also handle clearing bss, initializing iram and more.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27873 a1c6a512-1295-4272-9138-f99709370657
2010-08-24 14:30:46 +00:00

577 lines
16 KiB
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2005 David Dent
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "plugin.h"
#include "errno.h"
/* function return values */
enum tidy_return
{
TIDY_RETURN_OK = 0,
TIDY_RETURN_ERROR = 1,
TIDY_RETURN_USB = 2,
TIDY_RETURN_ABORT = 3,
};
#define MAX_TYPES 64
struct tidy_type {
char filestring[64];
bool directory;
bool remove;
} tidy_types[MAX_TYPES];
int tidy_type_count;
bool tidy_loaded_and_changed = false;
#define DEFAULT_FILES PLUGIN_APPS_DIR "/disktidy.config"
#define CUSTOM_FILES PLUGIN_APPS_DIR "/disktidy_custom.config"
void add_item(const char* name, int index)
{
rb->strcpy(tidy_types[index].filestring, name);
if (name[rb->strlen(name)-1] == '/')
{
tidy_types[index].directory = true;
tidy_types[index].filestring[rb->strlen(name)-1] = '\0';
}
else
tidy_types[index].directory = false;
}
static int find_file_string(const char *file, char *last_group)
{
char temp[MAX_PATH];
int i = 0, idx_last_group = -1;
bool folder = false;
rb->strcpy(temp, file);
if (temp[rb->strlen(temp)-1] == '/')
{
folder = true;
temp[rb->strlen(temp)-1] = '\0';
}
while (i<tidy_type_count)
{
if (!rb->strcmp(tidy_types[i].filestring, temp) &&
folder == tidy_types[i].directory)
return i;
else if (!rb->strcmp(tidy_types[i].filestring, last_group))
idx_last_group = i;
i++;
}
/* not found, so insert it into its group */
if (file[0] != '<' && idx_last_group != -1)
{
for (i=idx_last_group; i<tidy_type_count; i++)
{
if (tidy_types[i].filestring[0] == '<')
{
idx_last_group = i;
break;
}
}
/* shift items up one */
for (i=tidy_type_count;i>idx_last_group;i--)
{
rb->strcpy(tidy_types[i].filestring, tidy_types[i-1].filestring);
tidy_types[i].directory = tidy_types[i-1].directory;
tidy_types[i].remove = tidy_types[i-1].remove;
}
tidy_type_count++;
add_item(file, idx_last_group+1);
return idx_last_group+1;
}
return i;
}
bool tidy_load_file(const char* file)
{
int fd = rb->open(file, O_RDONLY), i;
char buf[MAX_PATH], *str, *remove;
char last_group[MAX_PATH] = "";
bool new;
if (fd < 0)
return false;
while ((tidy_type_count < MAX_TYPES) &&
rb->read_line(fd, buf, MAX_PATH))
{
if (rb->settings_parseline(buf, &str, &remove))
{
i = find_file_string(str, last_group);
new = (i >= tidy_type_count);
if (!rb->strcmp(remove, "yes"))
tidy_types[i].remove = true;
else tidy_types[i].remove = false;
if (new)
{
i = tidy_type_count;
add_item(str, i);
tidy_type_count++;
}
if (str[0] == '<')
rb->strcpy(last_group, str);
}
}
rb->close(fd);
return true;
}
bool tidy_remove_item(char *item, int attr)
{
int i;
char *file;
bool ret = false, rem = false;
for (i=0; ret == false && i < tidy_type_count; i++)
{
file = tidy_types[i].filestring;
if (file[rb->strlen(file)-1] == '*')
{
if (!rb->strncmp(file, item, rb->strlen(file)-1))
rem = true;
}
else if (!rb->strcmp(file, item))
rem = true;
if (rem)
{
if (!tidy_types[i].remove)
return false;
if (attr&ATTR_DIRECTORY)
ret = tidy_types[i].directory;
else ret = true;
}
}
return ret;
}
void tidy_lcd_status(const char *name, int *removed)
{
char text[24]; /* "Cleaned up nnnnn items" */
/* display status text */
rb->lcd_clear_display();
rb->lcd_puts(0, 0, "Working ...");
rb->lcd_puts(0, 1, name);
rb->snprintf(text, 24, "Cleaned up %d items", *removed);
#ifdef HAVE_LCD_BITMAP
rb->lcd_puts(0, 2, text);
#endif
rb->lcd_update();
}
int tidy_path_append_entry(char *path, struct dirent *entry, int *path_length)
{
int name_len = rb->strlen(entry->d_name);
/* for the special case of path="/" this is one bigger but it's not a problem */
int new_length = *path_length + name_len + 1;
/* check overflow (keep space for trailing zero) */
if(new_length >= MAX_PATH)
return 0;
/* special case for path <> "/" */
if(rb->strcmp(path, "/") != 0)
{
rb->strcat(path + *path_length, "/");
(*path_length)++;
}
/* strcat is unsafe but the previous check normally avoid any problem */
/* use path_length to optimise */
rb->strcat(path + *path_length, entry->d_name);
*path_length += name_len;
return 1;
}
void tidy_path_remove_entry(char *path, int old_path_length, int *path_length)
{
path[old_path_length] = '\0';
*path_length = old_path_length;
}
/* path is assumed to be array of size MAX_PATH */
enum tidy_return tidy_removedir(char *path, int *path_length, int *removed)
{
/* delete directory */
struct dirent *entry;
enum tidy_return status = TIDY_RETURN_OK;
int button;
DIR *dir;
int old_path_length = *path_length;
/* display status text */
tidy_lcd_status(path, removed);
rb->yield();
dir = rb->opendir(path);
if (dir)
{
while((status == TIDY_RETURN_OK) && ((entry = rb->readdir(dir)) != 0))
/* walk directory */
{
/* check for user input and usb connect */
button = rb->get_action(CONTEXT_STD, TIMEOUT_NOBLOCK);
if (button == ACTION_STD_CANCEL)
{
rb->closedir(dir);
return TIDY_RETURN_ABORT;
}
if (rb->default_event_handler(button) == SYS_USB_CONNECTED)
{
rb->closedir(dir);
return TIDY_RETURN_USB;
}
rb->yield();
/* get absolute path */
/* returns an error if path is too long */
if(!tidy_path_append_entry(path, entry, path_length))
/* silent error */
continue;
if (entry->attribute & ATTR_DIRECTORY)
{
/* dir ignore "." and ".." */
if ((rb->strcmp(entry->d_name, ".") != 0) && \
(rb->strcmp(entry->d_name, "..") != 0))
{
tidy_removedir(path, path_length, removed);
}
}
else
{
/* file */
*removed += 1;
rb->remove(path);
}
/* restore path */
tidy_path_remove_entry(path, old_path_length, path_length);
}
rb->closedir(dir);
/* rmdir */
*removed += 1;
rb->rmdir(path);
}
else
{
status = TIDY_RETURN_ERROR;
}
return status;
}
/* path is assumed to be array of size MAX_PATH */
enum tidy_return tidy_clean(char *path, int *path_length, int *removed)
{
/* deletes junk files and dirs left by system */
struct dirent *entry;
enum tidy_return status = TIDY_RETURN_OK;
int button;
int del; /* has the item been deleted */
DIR *dir;
int old_path_length = *path_length;
/* display status text */
tidy_lcd_status(path, removed);
rb->yield();
dir = rb->opendir(path);
if (dir)
{
while((status == TIDY_RETURN_OK) && ((entry = rb->readdir(dir)) != 0))
/* walk directory */
{
/* check for user input and usb connect */
button = rb->get_action(CONTEXT_STD, TIMEOUT_NOBLOCK);
if (button == ACTION_STD_CANCEL)
{
rb->closedir(dir);
return TIDY_RETURN_ABORT;
}
if (rb->default_event_handler(button) == SYS_USB_CONNECTED)
{
rb->closedir(dir);
return TIDY_RETURN_USB;
}
rb->yield();
if (entry->attribute & ATTR_DIRECTORY)
{
/* directory ignore "." and ".." */
if ((rb->strcmp(entry->d_name, ".") != 0) && \
(rb->strcmp(entry->d_name, "..") != 0))
{
del = 0;
/* get absolute path */
/* returns an error if path is too long */
if(!tidy_path_append_entry(path, entry, path_length))
/* silent error */
continue;
if (tidy_remove_item(entry->d_name, entry->attribute))
{
/* delete dir */
tidy_removedir(path, path_length, removed);
del = 1;
}
if (del == 0)
{
/* dir not deleted so clean it */
status = tidy_clean(path, path_length, removed);
}
/* restore path */
tidy_path_remove_entry(path, old_path_length, path_length);
}
}
else
{
/* file */
del = 0;
if (tidy_remove_item(entry->d_name, entry->attribute))
{
/* get absolute path */
/* returns an error if path is too long */
if(!tidy_path_append_entry(path, entry, path_length))
/* silent error */
continue;
*removed += 1; /* increment removed files counter */
/* delete file */
rb->remove(path);
del = 1;
/* restore path */
tidy_path_remove_entry(path, old_path_length, path_length);
}
}
}
rb->closedir(dir);
return status;
}
else
{
return TIDY_RETURN_ERROR;
}
}
enum tidy_return tidy_do(void)
{
/* clean disk and display num of items removed */
int removed = 0;
enum tidy_return status;
char text[24]; /* "Cleaned up nnnnn items" */
char path[MAX_PATH];
int path_length;
#ifdef HAVE_ADJUSTABLE_CPU_FREQ
rb->cpu_boost(true);
#endif
rb->strcpy(path, "/");
path_length = rb->strlen(path);
status = tidy_clean(path, &path_length, &removed);
#ifdef HAVE_ADJUSTABLE_CPU_FREQ
rb->cpu_boost(false);
#endif
if ((status == TIDY_RETURN_OK) || (status == TIDY_RETURN_ABORT))
{
rb->lcd_clear_display();
rb->snprintf(text, 24, "Cleaned up %d items", removed);
if (status == TIDY_RETURN_ABORT)
{
rb->splash(HZ, "User aborted");
rb->lcd_clear_display();
}
rb->splash(HZ*2, text);
}
return status;
}
enum themable_icons get_icon(int item, void * data)
{
(void)data;
if (tidy_types[item].filestring[0] == '<') /* special type */
return Icon_Folder;
else if (tidy_types[item].remove)
return Icon_Cursor;
else
return Icon_NOICON;
}
static const char* get_name(int selected_item, void * data,
char * buffer, size_t buffer_len)
{
(void)data;
if (tidy_types[selected_item].directory)
{
rb->snprintf(buffer, buffer_len, "%s/",
tidy_types[selected_item].filestring);
return buffer;
}
return tidy_types[selected_item].filestring;
}
int list_action_callback(int action, struct gui_synclist *lists)
{
if (action == ACTION_STD_OK)
{
int selection = rb->gui_synclist_get_sel_pos(lists);
if (tidy_types[selection].filestring[0] == '<')
{
int i;
if (!rb->strcmp(tidy_types[selection].filestring, "< ALL >"))
{
for (i=0; i<tidy_type_count; i++)
{
if (tidy_types[i].filestring[0] != '<')
tidy_types[i].remove = true;
}
}
else if (!rb->strcmp(tidy_types[selection].filestring, "< NONE >"))
{
for (i=0; i<tidy_type_count; i++)
{
if (tidy_types[i].filestring[0] != '<')
tidy_types[i].remove = false;
}
}
else /* toggle all untill the next <> */
{
selection++;
while (selection < tidy_type_count &&
tidy_types[selection].filestring[0] != '<')
{
tidy_types[selection].remove = !tidy_types[selection].remove;
selection++;
}
}
}
else
tidy_types[selection].remove = !tidy_types[selection].remove;
tidy_loaded_and_changed = true;
return ACTION_REDRAW;
}
return action;
}
enum tidy_return tidy_lcd_menu(void)
{
int selection = 0;
enum tidy_return status = TIDY_RETURN_OK;
bool menu_quit = false;
MENUITEM_STRINGLIST(menu, "Disktidy Menu", NULL,
"Start Cleaning", "Files to Clean",
"Quit");
while (!menu_quit)
{
switch(rb->do_menu(&menu, &selection, NULL, false))
{
case 0:
menu_quit = true; /* start cleaning */
break;
case 1:
{
bool show_icons = rb->global_settings->show_icons;
struct simplelist_info list;
rb->simplelist_info_init(&list, "Files to Clean",
tidy_type_count, NULL);
list.get_icon = get_icon;
list.get_name = get_name;
list.action_callback = list_action_callback;
rb->simplelist_show_list(&list);
rb->global_settings->show_icons = show_icons;
}
break;
default:
status = TIDY_RETURN_ABORT; /* exit plugin */
menu_quit = true;
break;
}
}
return status;
}
/* this is the plugin entry point */
enum plugin_status plugin_start(const void* parameter)
{
enum tidy_return status;
(void)parameter;
tidy_type_count = 0;
tidy_load_file(DEFAULT_FILES);
tidy_load_file(CUSTOM_FILES);
if (tidy_type_count == 0)
{
rb->splash(3*HZ, "Missing disktidy.config file");
return PLUGIN_ERROR;
}
status = tidy_lcd_menu();
if (tidy_loaded_and_changed)
{
int fd = rb->creat(CUSTOM_FILES, 0666);
int i;
if (fd >= 0)
{
for(i=0;i<tidy_type_count;i++)
{
rb->fdprintf(fd, "%s%c: %s\n", tidy_types[i].filestring,
tidy_types[i].directory?'/':'\0',
tidy_types[i].remove?"yes":"no");
}
rb->close(fd);
}
}
if (status == TIDY_RETURN_ABORT)
return PLUGIN_OK;
while (true)
{
status = tidy_do();
switch (status)
{
case TIDY_RETURN_OK:
return PLUGIN_OK;
case TIDY_RETURN_ERROR:
return PLUGIN_ERROR;
case TIDY_RETURN_USB:
return PLUGIN_USB_CONNECTED;
case TIDY_RETURN_ABORT:
return PLUGIN_OK;
}
}
if (rb->default_event_handler(rb->button_get(false)) == SYS_USB_CONNECTED)
return PLUGIN_USB_CONNECTED;
rb->yield();
return PLUGIN_OK;
}
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