#include "buf.h"
#include "core.h"

#include "libcmd/cmd.h"
#include "libcmd/cmd_parse.h"

extern file_t *g_file;
extern buf_t *g_buf;
extern int g_flags;

int c_seek(  cmd_arg_t *arg  )
{
	int fret;
	int argc = arg->argc;
	char **argv = arg->argv;
	off_t offset;
	int off_type = 0; //-1 seek down, 0 set pos, +1 seek up

	if (argc != 1)
	{
		printf("One argument needed\n");
		return -1;
	}

	if (g_file->fd == 0)
	{
		printf("File descriptor not set\n");
		return -1;
	}

	//set seek type
	switch( argv[0][0] )
	{
	case '+':
		off_type = 1;
		break;
	case '-':
		off_type = -1;
		break;
	default:
		off_type = 0;
	}

	offset = atoi( argv[0] ); //!fix that to strtol at least

	if (off_type == 0)
	{
		//g_file offset maybe wrong
		fret = file_seekp( g_file, offset );
	} else
	{
		fret = file_seek( g_file, offset );
	}
	if ( fret != 0 )
	{
		printf("Cannot seek postion to %zd\n", offset);
		return -1;
	}

	return 0;
}