apps/plugins/searchengine/searchengine.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2005 by Michiel van der Kolk
  11  *
  12  * All files in this archive are subject to the GNU General Public License.
  13  * See the file COPYING in the source tree root for full license agreement.
  14  *
  15  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  16  * KIND, either express or implied.
  17  *
  18  ****************************************************************************/
  19 #include "searchengine.h"
  20 #include "parser.h"
  21 #include "token.h"
  22 #include "dbinterface.h"
  23
  24 PLUGIN_HEADER
  25
  26 void *audio_bufferbase;
  27 void *audio_bufferpointer;
  28 size_t audio_buffer_free;
  29 struct plugin_api* rb;
  30 int w, h, y;
  31
  32 void *my_malloc(size_t size)
  33 {
  34     void *alloc;
  35
  36     if (!audio_bufferbase)
  37     {
  38         audio_bufferbase = audio_bufferpointer
  39             = rb->plugin_get_audio_buffer(&audio_buffer_free);
  40         audio_bufferpointer+=3;
  41         audio_bufferpointer=(void *)(((long)audio_bufferpointer)&~3);
  42         audio_buffer_free-=audio_bufferpointer-audio_bufferbase;
  43     }
  44     if (size + 4 > audio_buffer_free)
  45         return 0;
  46     alloc = audio_bufferpointer;
  47     audio_bufferpointer +=(size+3)&~3; // alignment
  48     audio_buffer_free -= (size+3)&~3;
  49     return alloc;
  50 }
  51
  52 void setmallocpos(void *pointer)
  53 {
  54     audio_bufferpointer = pointer;
  55     audio_buffer_free = audio_bufferpointer - audio_bufferbase;
  56 }
  57
  58 /* this is the plugin entry point */
  59 enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
  60 {
  61     unsigned char *result,buf[500];
  62     int parsefd,hits;
  63     /* if you are using a global api pointer, don't forget to copy it!
  64        otherwise you will get lovely "I04: IllInstr" errors... :-) */
  65     rb = api;
  66
  67     audio_bufferbase=audio_bufferpointer=0;
  68     audio_buffer_free=0;
  69
  70     /* now go ahead and have fun! */
  71     PUTS("SearchEngine v0.1");
  72     parsefd=rb->open(parameter,O_RDONLY);
  73     if(parsefd<0) {
  74         rb->splash(2*HZ,"Unable to open search tokenstream");
  75         return PLUGIN_ERROR;
  76     }
  77     result=parse(parsefd);
  78     rb->snprintf(buf,250,"Retval: 0x%x",result);
  79     PUTS(buf);
  80     rb->close(parsefd);
  81     hits=0;
  82     if(result!=0) {
  83         int fd=rb->open("/search.m3u", O_WRONLY|O_CREAT|O_TRUNC);
  84         int i;
  85         for(i=0;i<rb->tagdbheader->filecount;i++)
  86             if(result[i]) {
  87                 hits++;
  88                 rb->fdprintf(fd,"%s\n",getfilename(i));
  89             }
  90         rb->close(fd);
  91     }
  92     rb->snprintf(buf,250,"Hits: %d",hits);
  93     rb->splash(HZ*3,buf);
  94     if (result!=0) {
  95         /* Return PLUGIN_USB_CONNECTED to force a file-tree refresh */
  96         return PLUGIN_USB_CONNECTED;
  97     }
  98     return PLUGIN_OK;
  99 }