/**
 * $Id: mfile.cpp,v 1.6 2002/10/21 08:37:21 plasmahh Exp $
 * $Revision: 1.6 $
 * $Author: plasmahh $
 * $Date: 2002/10/21 08:37:21 $
 */

#include "mfile.h"

mfile::mfile( const mstring& ne ) : fd(0)/*{{{*/
{
    char * cwd;
    name = ne;
    if (! name.matches("/")) // if filenam does not begin with / we have a relative one (only file in cwd, or ../ before it, or even not a valid one) set cwd in front, perhaps we change directory
    {
	cwd = new char[4096];
	getcwd(cwd, 4096);
	name = cwd + mstring("/") + name;
	delete[] cwd;
    }
}/*}}}*/

BOOL mfile::Open( sint32 oflag )/*{{{*/
{
    fd = open(name, oflag);
    return ( fd > 0);
}/*}}}*/

BOOL mfile::Close( void )/*{{{*/
{
    fd =  close(fd);
    return (fd >= 0);
    fd = -1;
}/*}}}*/

mstring mfile::ReadLine( void )/*{{{*/
{
    uint32 opos = lseek(fd, 0L, SEEK_CUR);
    mstring line;
    uchar8 * buffer;
    buffer = new uchar8[2049]; // most lines will not be greater than 2048 bytes
    sint32 byt;
    byt = read ( fd, buffer, 2048);

    if ( byt <= 0 ) 
    {
	delete [] buffer;
	return line;
    }

    buffer[byt] = '\0';
    register uint32 i=2048;
    while (i == 2048)
    {
	for (i=0; i < 2048;i++)
	{
	    if ( buffer[i] == '\n' || buffer[i] == '\0')
	    { 
		buffer[i] = '\0';
		break; 
	    }
	}

	if ( i == 2048) 
	{ 
	    line += buffer; 
	}
	opos+=i;
    }
    line += buffer;
    lseek(fd, opos + 1  , SEEK_SET);
    delete[] buffer;
    return line;
}/*}}}*/

mstring mfile::Read( uint32 bytes )/*{{{*/
{
    uint32 opos = lseek(fd, 0L, SEEK_CUR);
    mstring line;
    sint32 byt;
    uchar8 * buffer;
    buffer = new uchar8[bytes + 1]; // most lines will not be greater than 2048 bytes

    byt = read ( fd, buffer, bytes);
    if ( byt <= 0)
    {
	delete[] buffer;
	return line;
    }
    buffer[ byt ] = '\0';
    register uint32 i=bytes;
    for (i=0; i < bytes;i++)
    {
	if ( buffer[i] == '\0')
	    { 
		break; 
	    }
    }
    line += buffer;
    opos += i;
    lseek(fd, opos + 1 , SEEK_SET);
    delete [] buffer;
    return line;
}/*}}}*/

BOOL mfile::Eof( void )/*{{{*/
{
    // try to read 1 byte, if we can't we are at EOF
    // reset file pointer afterwards
    uchar8 dummy[1];
    BOOL eof;
    sint32 bytes;
    bytes = read( fd, &dummy, 1);
    eof = (bytes != 1);
    lseek(fd, -1L, SEEK_CUR);
    return eof;
}/*}}}*/
/**
 *$Log: mfile.cpp,v $
 *Revision 1.6  2002/10/21 08:37:21  plasmahh
 *beginning cleanup for smtpmap release 0.8-stable
 *
 *Revision 1.5  2002/05/23 19:48:08  plasmahh
 *removed some compiler warnings.
 *fixed one or two bugs.
 *refined include structure, for faster compiling
 *hm, what else ? don't know, I hope this works all ;)
 *
 *Revision 1.4  2002/05/15 07:01:54  plasmahh
 *Fixed memory leak.
 *
 *Revision 1.3  2002/05/14 16:31:13  plasmahh
 *Removed some compiler warnings
 *Added more code,  hopefully fast ;)
 *
 *Revision 1.2  2002/05/13 21:32:57  plasmahh
 *implemented file class & readline
 *implemented additional in mstring
 *
 *Revision 1.1  2002/05/13 14:33:23  plasmahh
 *added file class
 *
 */