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ewf_test_truncate.c
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ewf_test_truncate.c
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/*
* Expert Witness Compression Format (EWF) library truncate program
*
* Copyright (c) 2006-2012, Joachim Metz <jbmetz@users.sourceforge.net>
*
* Refer to AUTHORS for acknowledgements.
*
* This software is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this software. If not, see <http://www.gnu.org/licenses/>.
*/
#include <common.h>
#include <libcstring.h>
#if defined( HAVE_STDLIB_H ) || defined( WINAPI )
#include <stdlib.h>
#endif
#include <stdio.h>
#include <libsystem.h>
/* The main program
*/
#if defined( LIBCSTRING_HAVE_WIDE_SYSTEM_CHARACTER )
int wmain( int argc, wchar_t * const argv[] )
#else
int main( int argc, char * const argv[] )
#endif
{
liberror_error_t *error = NULL;
libsystem_file_handle_t file_handle = LIBSYSTEM_FILE_HANDLE_EMPTY;
size64_t file_size = 0;
size_t string_length = 0;
if( argc < 2 )
{
fprintf(
stderr,
"Missing file size.\n" );
return( EXIT_FAILURE );
}
if( argc < 3 )
{
fprintf(
stderr,
"Missing filename.\n" );
return( EXIT_FAILURE );
}
string_length = libcstring_system_string_length(
argv[ 1 ] );
if( libsystem_string_decimal_copy_to_64_bit(
argv[ 1 ],
string_length + 1,
&file_size,
&error ) != 1 )
{
fprintf(
stderr,
"Unsupported file size.\n" );
goto on_error;
}
if( libsystem_file_open(
&file_handle,
argv[ 2 ],
LIBSYSTEM_FILE_OPEN_WRITE,
&error ) != 1 )
{
fprintf(
stderr,
"Unable to open file: %" PRIs_LIBCSTRING_SYSTEM ".\n",
argv[ 2 ] );
goto on_error;
}
if( libsystem_file_resize(
file_handle,
file_size,
&error ) != 1 )
{
fprintf(
stderr,
"Unable to resize file.\n" );
goto on_error;
}
if( libsystem_file_close(
&file_handle,
&error ) != 0 )
{
fprintf(
stderr,
"Unable to close file.\n" );
goto on_error;
}
return( EXIT_SUCCESS );
on_error:
if( error != NULL )
{
libsystem_notify_print_error_backtrace(
error );
liberror_error_free(
&error );
}
if( file_handle != LIBSYSTEM_FILE_HANDLE_EMPTY )
{
libsystem_file_close(
&file_handle,
NULL );
}
return( EXIT_FAILURE );
}

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