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rockbox/apps/plugins/theme_remove.c
Thomas Martitz abdc5935be Introduce plugin_crt0.c that every plugin links. 
It handles exit() properly, calling the handler also when the plugin returns
normally (also it makes 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 it 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@27862 a1c6a512-1295-4272-9138-f99709370657
2010-08-23 16:56:49 +00:00

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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* 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 "lib/configfile.h"
/* taken from apps/gui/wps_parser.c */
#define WPS_DEFAULTCFG WPS_DIR "/rockbox_default.wps"
#define RWPS_DEFAULTCFG WPS_DIR "/rockbox_default.rwps"
#define CONFIG_FILENAME "theme_remove.cfg"
#define LOG_FILENAME "/theme_remove_log.txt"
#define RB_FONTS_CONFIG VIEWERS_DIR "/rockbox-fonts.config"
enum remove_option {
ALWAYS_REMOVE,
NEVER_REMOVE,
REMOVE_IF_NOT_USED,
ASK_FOR_REMOVAL,
NUM_REMOVE_OPTION
};
struct remove_setting {
const char *name;
const char *prefix, *suffix;
char value[MAX_PATH];
int option;
int (*func)(struct remove_setting *);
bool used;
};
static int remove_wps(struct remove_setting *);
#ifdef HAVE_LCD_BITMAP
static int remove_icons(struct remove_setting *setting);
#endif
enum remove_settings {
#ifdef HAVE_LCD_BITMAP
REMOVE_FONT,
#endif
REMOVE_WPS,
#ifdef HAVE_LCD_BITMAP
REMOVE_SBS,
#endif
#ifdef HAVE_REMOTE_LCD
REMOVE_RWPS,
REMOVE_RSBS,
#endif
#if LCD_DEPTH > 1
REMOVE_BACKDROP,
#endif
#ifdef HAVE_LCD_BITMAP
REMOVE_ICON,
REMOVE_VICON,
#endif
#ifdef HAVE_REMOTE_LCD
REMOVE_RICON,
REMOVE_RVICON,
#endif
#ifdef HAVE_LCD_COLOR
REMOVE_COLOURS,
#endif
NUM_REMOVE_ITEMS
};
static bool create_log = true;
static struct remove_setting remove_list[NUM_REMOVE_ITEMS] = {
#ifdef HAVE_LCD_BITMAP
[REMOVE_FONT] = { "font", FONT_DIR "/", ".fnt", "",
ASK_FOR_REMOVAL, NULL, false },
#endif
[REMOVE_WPS] = { "wps", WPS_DIR "/", ".wps", "",
REMOVE_IF_NOT_USED, remove_wps, false },
#ifdef HAVE_LCD_BITMAP
[REMOVE_SBS] = { "sbs", SBS_DIR "/", ".sbs", "",
REMOVE_IF_NOT_USED, remove_wps, false },
#endif
#ifdef HAVE_REMOTE_LCD
[REMOVE_RWPS] = { "rwps", WPS_DIR "/", ".rwps", "",
REMOVE_IF_NOT_USED, remove_wps, false },
[REMOVE_RSBS] = { "rsbs", SBS_DIR "/", ".rsbs", "",
REMOVE_IF_NOT_USED, remove_wps, false },
#endif
#if LCD_DEPTH > 1
[REMOVE_BACKDROP] = { "backdrop", BACKDROP_DIR "/", ".bmp", "",
REMOVE_IF_NOT_USED, NULL, false },
#endif
#ifdef HAVE_LCD_BITMAP
[REMOVE_ICON] = { "iconset", ICON_DIR "/", ".bmp", "",
ASK_FOR_REMOVAL, NULL, false },
[REMOVE_VICON] = { "viewers iconset", ICON_DIR "/", ".bmp", "",
ASK_FOR_REMOVAL, remove_icons, false },
#endif
#ifdef HAVE_REMOTE_LCD
[REMOVE_RICON] = { "remote iconset", ICON_DIR "/", ".bmp", "",
ASK_FOR_REMOVAL, NULL, false },
[REMOVE_RVICON] = { "remote viewers iconset", ICON_DIR "/", ".bmp", "",
ASK_FOR_REMOVAL, NULL, false },
#endif
#ifdef HAVE_LCD_COLOR
[REMOVE_COLOURS] = { "filetype colours", THEME_DIR "/", ".colours", "",
ASK_FOR_REMOVAL, NULL, false },
#endif
};
static char *option_names[NUM_REMOVE_OPTION] = {
"always", "never", "not used", "ask",
};
static struct configdata config[] = {
#ifdef HAVE_LCD_BITMAP
{ TYPE_INT, 0, NUM_REMOVE_OPTION,
{ .int_p = &remove_list[REMOVE_FONT].option },
"remove font", option_names },
#endif
{ TYPE_INT, 0, NUM_REMOVE_OPTION,
{ .int_p = &remove_list[REMOVE_WPS].option },
"remove wps", option_names },
#ifdef HAVE_LCD_BITMAP
{ TYPE_INT, 0, NUM_REMOVE_OPTION,
{ .int_p = &remove_list[REMOVE_SBS].option },
"remove sbs", option_names },
#endif
#ifdef HAVE_REMOTE_LCD
{ TYPE_INT, 0, NUM_REMOVE_OPTION,
{ .int_p = &remove_list[REMOVE_RWPS].option },
"remove rwps", option_names },
{ TYPE_INT, 0, NUM_REMOVE_OPTION,
{ .int_p = &remove_list[REMOVE_RSBS].option },
"remove rsbs", option_names },
#endif
#if LCD_DEPTH > 1
{ TYPE_INT, 0, NUM_REMOVE_OPTION,
{ .int_p = &remove_list[REMOVE_BACKDROP].option },
"remove backdrop", option_names },
#endif
#ifdef HAVE_LCD_BITMAP
{ TYPE_INT, 0, NUM_REMOVE_OPTION,
{ .int_p = &remove_list[REMOVE_ICON].option },
"remove iconset", option_names },
{ TYPE_INT, 0, NUM_REMOVE_OPTION,
{ .int_p = &remove_list[REMOVE_VICON].option },
"remove viconset", option_names },
#endif
#ifdef HAVE_REMOTE_LCD
{ TYPE_INT, 0, NUM_REMOVE_OPTION,
{ .int_p = &remove_list[REMOVE_RICON].option },
"remove riconset", option_names },
{ TYPE_INT, 0, NUM_REMOVE_OPTION,
{ .int_p = &remove_list[REMOVE_RVICON].option },
"remove rviconset", option_names },
#endif
#ifdef HAVE_LCD_COLOR
{ TYPE_INT, 0, NUM_REMOVE_OPTION,
{ .int_p = &remove_list[REMOVE_COLOURS].option },
"remove colours", option_names },
#endif
{TYPE_BOOL, 0, 1, { .bool_p = &create_log },
"create log", NULL},
};
static const int nb_config = sizeof(config)/sizeof(*config);
static char themefile[MAX_PATH];
static int log_fd = -1;
static int show_mess(const char *text, const char *file)
{
static char buf[MAX_PATH*2];
if (file)
rb->snprintf(buf, sizeof(buf), "%s: %s", text, file);
else
rb->snprintf(buf, sizeof(buf), "%s", text);
DEBUGF("%s\n", buf);
if (log_fd >= 0)
rb->fdprintf(log_fd, "%s\n", buf);
rb->splash(0, buf);
rb->sleep(HZ/4);
return 0;
}
/* set full path of file. */
static void set_file_name(char *buf, const char*file,
struct remove_setting *setting)
{
int len1, len2;
if (rb->strncasecmp(file, setting->prefix, rb->strlen(setting->prefix)))
rb->snprintf(buf, MAX_PATH, "%s%s", setting->prefix, file);
else
rb->strlcpy(buf, file, MAX_PATH);
len1 = rb->strlen(buf);
len2 = rb->strlen(setting->suffix);
if (rb->strcasecmp(buf+len1-len2, setting->suffix))
rb->strlcpy(&buf[len1], setting->suffix, MAX_PATH-len1);
}
/* taken from apps/onplay.c */
/* helper function to remove a non-empty directory */
static int remove_dir(char* dirname, int len)
{
int result = 0;
DIR* dir;
int dirlen = rb->strlen(dirname);
dir = rb->opendir(dirname);
if (!dir)
return -1; /* open error */
while (true)
{
struct dirent* entry;
/* walk through the directory content */
entry = rb->readdir(dir);
if (!entry)
break;
dirname[dirlen] ='\0';
/* append name to current directory */
rb->snprintf(dirname+dirlen, len-dirlen, "/%s", entry->d_name);
if (entry->attribute & ATTR_DIRECTORY)
{
/* remove a subdirectory */
if (!rb->strcmp((char *)entry->d_name, ".") ||
!rb->strcmp((char *)entry->d_name, ".."))
continue; /* skip these */
result = remove_dir(dirname, len); /* recursion */
if (result)
break;
}
else
{
/* remove a file */
result = rb->remove(dirname);
}
if (ACTION_STD_CANCEL == rb->get_action(CONTEXT_STD, TIMEOUT_NOBLOCK))
{
show_mess("Canceled", NULL);
result = -1;
break;
}
}
rb->closedir(dir);
if (!result)
{ /* remove the now empty directory */
dirname[dirlen] = '\0'; /* terminate to original length */
result = rb->rmdir(dirname);
show_mess("Removed", dirname);
}
return result;
}
static int remove_wps(struct remove_setting *setting)
{
char bmpdir[MAX_PATH];
char *p;
rb->strcpy(bmpdir, setting->value);
p = rb->strrchr(bmpdir, '.');
if (p) *p = 0;
if (!rb->dir_exists(bmpdir))
return 0;
return remove_dir(bmpdir, MAX_PATH);
}
#ifdef HAVE_LCD_BITMAP
static int remove_icons(struct remove_setting *setting)
{
char path[MAX_PATH];
char *p;
rb->strcpy(path, setting->value);
p = rb->strrchr(path, '.');
rb->strlcpy(p, ".icons", path+MAX_PATH-p);
if (!rb->file_exists(path))
{
return 0;
}
if (rb->remove(path))
{
show_mess("Failed", path);
return 1;
}
show_mess("Removed", path);
return 0;
}
#endif
#ifdef HAVE_LCD_BITMAP
static char font_file[MAX_PATH];
#endif
static bool is_deny_file(const char *file)
{
const char *deny_files[] = {
WPS_DEFAULTCFG,
RWPS_DEFAULTCFG,
#ifdef HAVE_LCD_BITMAP
font_file,
#endif
NULL
};
const char **p = deny_files;
while ( *p )
{
if (!rb->strcmp(file, *p))
return true;
p++;
}
return false;
}
static void check_whether_used_in_setting(void)
{
const char *setting_files[] = {
#ifdef HAVE_LCD_BITMAP
rb->global_settings->font_file,
#endif
rb->global_settings->wps_file,
#ifdef HAVE_LCD_BITMAP
rb->global_settings->sbs_file,
#endif
#ifdef HAVE_REMOTE_LCD
rb->global_settings->rwps_file,
rb->global_settings->rsbs_file,
#endif
#if LCD_DEPTH > 1
rb->global_settings->backdrop_file,
#endif
#ifdef HAVE_LCD_BITMAP
rb->global_settings->icon_file,
rb->global_settings->viewers_icon_file,
#endif
#ifdef HAVE_REMOTE_LCD
rb->global_settings->remote_icon_file,
rb->global_settings->remote_viewers_icon_file,
#endif
#ifdef HAVE_LCD_COLOR
rb->global_settings->colors_file,
#endif
};
char tempfile[MAX_PATH];
int i;
for (i=0; i<NUM_REMOVE_ITEMS; i++)
{
struct remove_setting *setting = &remove_list[i];
if (setting->value[0])
{
set_file_name(tempfile, setting_files[i], setting);
if (!rb->strcasecmp(tempfile, setting->value))
setting->used = true;
}
}
}
static void check_whether_used_in_file(const char *cfgfile)
{
char line[MAX_PATH];
char settingfile[MAX_PATH];
char *p;
int fd;
char *name, *value;
int i;
if (!rb->strcasecmp(themefile, cfgfile))
return;
fd = rb->open(cfgfile, O_RDONLY);
if (fd < 0)
return;
while (rb->read_line(fd, line, sizeof(line)) > 0)
{
if (!rb->settings_parseline(line, &name, &value))
continue;
/* remove trailing spaces. */
p = value+rb->strlen(value)-1;
while (*p == ' ') *p-- = 0;
if (*value == 0 || !rb->strcmp(value, "-"))
continue;
for (i=0; i<NUM_REMOVE_ITEMS; i++)
{
struct remove_setting *setting = &remove_list[i];
if (!rb->strcmp(name, setting->name))
{
if (setting->value[0])
{
set_file_name(settingfile, value, setting);
if (!rb->strcasecmp(settingfile, setting->value))
setting->used = true;
}
break;
}
}
}
rb->close(fd);
}
static void check_whether_used(void)
{
char cfgfile[MAX_PATH];
DIR *dir;
check_whether_used_in_setting();
#ifdef HAVE_LCD_BITMAP
/* mark font files come from rockbox-font.zip as used and don't remove
* them automatically as themes may depend on those fonts. */
if (remove_list[REMOVE_FONT].option == REMOVE_IF_NOT_USED)
check_whether_used_in_file(RB_FONTS_CONFIG);
#endif
dir = rb->opendir(THEME_DIR);
if (!dir)
return; /* open error */
while (true)
{
struct dirent* entry;
char *p;
int i;
/* walk through the directory content */
entry = rb->readdir(dir);
if (!entry)
break;
p = rb->strrchr(entry->d_name, '.');
if (!p || rb->strcmp(p, ".cfg"))
continue;
rb->snprintf(cfgfile, MAX_PATH, "%s/%s", THEME_DIR, entry->d_name);
check_whether_used_in_file(cfgfile);
/* break the loop if all files need to be checked in the theme
* turned out to be used. */
for (i = 0; i < NUM_REMOVE_ITEMS; i++)
{
struct remove_setting *setting = &remove_list[i];
if (setting->option == REMOVE_IF_NOT_USED)
{
if (setting->value[0] && !setting->used)
break;
}
}
if (i == NUM_REMOVE_ITEMS)
break;
}
rb->closedir(dir);
}
static int remove_file(struct remove_setting *setting)
{
if (!rb->file_exists(setting->value))
{
show_mess("Doesn't exist", setting->value);
return 0;
}
if (is_deny_file(setting->value))
{
show_mess("Denied", setting->value);
return 0;
}
switch (setting->option)
{
case ALWAYS_REMOVE:
break;
case NEVER_REMOVE:
show_mess("Skipped", setting->value);
return 0;
break;
case REMOVE_IF_NOT_USED:
if (setting->used)
{
show_mess("Used", setting->value);
return 0;
}
break;
case ASK_FOR_REMOVAL:
default:
{
const char *message_lines[] = { "Delete?", setting->value };
const struct text_message text_message = { message_lines, 2 };
if (rb->gui_syncyesno_run(&text_message, NULL, NULL) != YESNO_YES)
{
show_mess("Skipped", setting->value);
return 0;
}
}
break;
}
if (rb->remove(setting->value))
{
show_mess("Failed", setting->value);
return -1;
}
if (setting->func && setting->func(setting))
return -1;
show_mess("Removed", setting->value);
return 1;
}
static int remove_theme(void)
{
static char line[MAX_PATH];
int fd;
int i, num_removed = 0;
char *name, *value;
bool needs_to_check_whether_used = false;
/* initialize for safe */
for (i=0; i<NUM_REMOVE_ITEMS; i++)
remove_list[i].value[0] = 0;
/* load settings */
fd = rb->open(themefile, O_RDONLY);
if (fd < 0) return fd;
while (rb->read_line(fd, line, sizeof(line)) > 0)
{
if (!rb->settings_parseline(line, &name, &value))
continue;
/* remove trailing spaces. */
char *p = value+rb->strlen(value)-1;
while (*p == ' ') *p-- = 0;
if (*value == 0 || !rb->strcmp(value, "-"))
continue;
for (i=0; i<NUM_REMOVE_ITEMS; i++)
{
struct remove_setting *setting = &remove_list[i];
if (!rb->strcmp(name, setting->name))
{
set_file_name(setting->value, value, setting);
if(setting->option == REMOVE_IF_NOT_USED)
needs_to_check_whether_used = true;
break;
}
}
}
rb->close(fd);
if(needs_to_check_whether_used)
check_whether_used();
/* now remove file assosiated to the theme. */
for (i=0; i<NUM_REMOVE_ITEMS; i++)
{
if (remove_list[i].value[0])
{
int ret = remove_file(&remove_list[i]);
if (ret < 0)
return ret;
num_removed += ret;
}
}
/* remove the setting file iff it is in theme directory to protect
* aginst accidental removal of non theme cfg file. if the file is
* not in the theme directory, the file may not be a theme cfg file. */
if (rb->strncasecmp(themefile, THEME_DIR "/", sizeof(THEME_DIR "/")-1))
{
show_mess("Skipped", themefile);
}
else if (rb->remove(themefile))
{
show_mess("Failed", themefile);
return -1;
}
else
{
show_mess("Removed", themefile);
rb->reload_directory();
num_removed++;
}
return num_removed;
}
static bool option_changed = false;
static bool option_menu(void)
{
MENUITEM_STRINGLIST(option_menu, "Remove Options", NULL,
/* same order as remove_list */
#ifdef HAVE_LCD_BITMAP
"Font",
#endif
"WPS",
#ifdef HAVE_LCD_BITMAP
"Statusbar Skin",
#endif
#ifdef HAVE_REMOTE_LCD
"Remote WPS",
"Remote Statusbar Skin",
#endif
#if LCD_DEPTH > 1
"Backdrop",
#endif
#ifdef HAVE_LCD_BITMAP
"Iconset", "Viewers Iconset",
#endif
#ifdef HAVE_REMOTE_LCD
"Remote Iconset", "Remote Viewers Iconset",
#endif
#ifdef HAVE_LCD_COLOR
"Filetype Colours",
#endif
"Create Log File");
struct opt_items remove_names[] = {
{"Always Remove", -1}, {"Never Remove", -1},
{"Remove if not Used", -1}, {"Ask for Removal", -1},
};
int selected = 0, result;
while (1)
{
result = rb->do_menu(&option_menu, &selected, NULL, false);
if (result >= 0 && result < NUM_REMOVE_ITEMS)
{
struct remove_setting *setting = &remove_list[result];
int prev_option = setting->option;
if (rb->set_option(option_menu_[result], &setting->option, INT,
remove_names, NUM_REMOVE_OPTION, NULL))
return true;
if (prev_option != setting->option)
option_changed = true;
}
else if (result == NUM_REMOVE_ITEMS)
{
bool prev_value = create_log;
if(rb->set_bool("Create Log File", &create_log))
return true;
if (prev_value != create_log)
option_changed = true;
}
else if (result == MENU_ATTACHED_USB)
return true;
else
return false;
}
return false;
}
enum plugin_status plugin_start(const void* parameter)
{
static char title[64];
char *p;
MENUITEM_STRINGLIST(menu, title, NULL,
"Remove Theme", "Remove Options",
"Quit");
int selected = 0, ret;
bool exit = false;
if (!parameter)
return PLUGIN_ERROR;
rb->snprintf(title, sizeof(title), "Remove %s",
rb->strrchr(parameter, '/')+1);
if((p = rb->strrchr(title, '.')))
*p = 0;
#ifdef HAVE_LCD_BITMAP
rb->snprintf(font_file, MAX_PATH, FONT_DIR "/%s.fnt",
rb->global_settings->font_file);
#endif
rb->strlcpy(themefile, parameter, MAX_PATH);
if (!rb->file_exists(themefile))
{
rb->splash(HZ, "File open error!");
return PLUGIN_ERROR;
}
configfile_load(CONFIG_FILENAME, config, nb_config, 0);
while (!exit)
{
switch (rb->do_menu(&menu, &selected, NULL, false))
{
case 0:
if(create_log)
{
log_fd = rb->open(LOG_FILENAME, O_WRONLY|O_CREAT|O_APPEND, 0666);
if(log_fd >= 0)
rb->fdprintf(log_fd, "---- %s ----\n", title);
else
show_mess("Couldn't open log file.", NULL);
}
ret = remove_theme();
p = (ret >= 0? "Successfully removed!": "Remove failure");
show_mess(p, NULL);
if(log_fd >= 0)
{
rb->fdprintf(log_fd, "----------------\n");
rb->close(log_fd);
log_fd = -1;
}
rb->lcd_clear_display();
rb->lcd_update();
rb->splashf(0, "%s %s", p, "Press any key to exit.");
rb->button_clear_queue();
rb->button_get(true);
exit = true;
break;
case 1:
if (option_menu())
return PLUGIN_USB_CONNECTED;
break;
case 2:
exit = true;
break;
case MENU_ATTACHED_USB:
return PLUGIN_USB_CONNECTED;
break;
default:
break;
}
}
if(option_changed)
configfile_save(CONFIG_FILENAME, config, nb_config, 0);
return PLUGIN_OK;
}
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