rockbox/apps/plugins/searchengine/searchengine.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

97 lines
2.9 KiB
C

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2005 by Michiel van der Kolk
*
* 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 "searchengine.h"
#include "parser.h"
#include "token.h"
#include "dbinterface.h"
void *audio_bufferbase;
void *audio_bufferpointer;
size_t audio_buffer_free;
int w, h, y;
void *my_malloc(size_t size)
{
void *alloc;
if (!audio_bufferbase)
{
audio_bufferbase = audio_bufferpointer
= rb->plugin_get_audio_buffer(&audio_buffer_free);
audio_bufferpointer+=3;
audio_bufferpointer=(void *)(((long)audio_bufferpointer)&~3);
audio_buffer_free-=audio_bufferpointer-audio_bufferbase;
}
if (size + 4 > audio_buffer_free)
return 0;
alloc = audio_bufferpointer;
audio_bufferpointer +=(size+3)&~3; // alignment
audio_buffer_free -= (size+3)&~3;
return alloc;
}
void setmallocpos(void *pointer)
{
audio_bufferpointer = pointer;
audio_buffer_free = audio_bufferpointer - audio_bufferbase;
}
/* this is the plugin entry point */
enum plugin_status plugin_start(const void* parameter)
{
unsigned char *result,buf[500];
int parsefd,hits;
audio_bufferbase=audio_bufferpointer=0;
audio_buffer_free=0;
/* now go ahead and have fun! */
PUTS("SearchEngine v0.1");
parsefd=rb->open(parameter,O_RDONLY);
if(parsefd<0) {
rb->splash(2*HZ,"Unable to open search tokenstream");
return PLUGIN_ERROR;
}
result=parse(parsefd);
rb->snprintf(buf,250,"Retval: 0x%x",result);
PUTS(buf);
rb->close(parsefd);
hits=0;
if(result!=0) {
int fd=rb->open("/search.m3u", O_WRONLY|O_CREAT|O_TRUNC, 0666);
int i;
for(i=0;i<rb->tagdbheader->filecount;i++)
if(result[i]) {
hits++;
rb->fdprintf(fd,"%s\n",getfilename(i));
}
rb->close(fd);
}
rb->snprintf(buf,250,"Hits: %d",hits);
rb->splash(HZ*3,buf);
if (result!=0) {
/* Return PLUGIN_USB_CONNECTED to force a file-tree refresh */
return PLUGIN_USB_CONNECTED;
}
return PLUGIN_OK;
}