rockbox/apps/plugins/text_viewer/tv_text_reader.c
Rafaël Carré 59fd2b24bd FS#11399 by me: fix r26998 for text_viewer
Restore the old behaviour:

- preferences must be read-write for tv_preferences.c , read-only for
  all other modules -> use pointer to const struct
- init functions must get the plugin buffer + its size as arguments for
  easily adding new functions -> use pointer to buffer pointer and size
  to make allocation easier
- preferences meaning is private to each file and must not be known by
  tv_preferences.c -> move tv_check_header_and_footer() back in
  tv_window.c; also avoid chaining 3 times the callbacks by calling
  tv_set_preferences() only once if more than one preference needs
  changing

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27089 a1c6a512-1295-4272-9138-f99709370657
2010-06-23 13:56:08 +00:00

81 lines
2.1 KiB
C

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 Gilles Roux
* 2003 Garrett Derner
* 2010 Yoshihisa Uchida
*
* 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 "tv_pager.h"
#include "tv_reader.h"
#include "tv_text_processor.h"
#include "tv_text_reader.h"
static int get_block;
static bool get_double_blocks;
bool tv_init_text_reader(unsigned char **buf, size_t *size)
{
return tv_init_text_processor(buf, size) && tv_init_pager(buf, size);
}
void tv_finalize_text_reader(void)
{
tv_finalize_pager();
}
void tv_set_read_conditions(int blocks, int width)
{
tv_set_creation_conditions(blocks, width);
}
off_t tv_get_total_text_size(void)
{
return tv_get_file_size();
}
bool tv_get_next_line(const unsigned char **buf)
{
ssize_t bufsize;
const unsigned char *buffer = tv_get_buffer(&bufsize);
if (bufsize > 0)
{
tv_move_next_line(
tv_create_formed_text(buffer, bufsize, get_block, get_double_blocks, buf));
return true;
}
return false;
}
void tv_read_start(int block, bool is_multi)
{
get_block = block;
get_double_blocks = is_multi;
tv_reset_line_positions();
}
int tv_read_end(void)
{
return tv_get_line_positions(0);
}
void tv_seek_top(void)
{
tv_move_screen(0, 0, SEEK_SET);
}