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1222 lines (1009 loc) · 25 KB
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/*
W3NG CGI-BIN NORTON GUIDE FILTER.
Copyright (C) 1996 David A Pearson
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 program 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 General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* Modification history:
*
* $Log: w3ng.c,v $
* Revision 1.12 1996/04/01 15:10:16 davep
* Changed to work with Norton Guides that have no menu at all.
*
* Revision 1.11 1996/03/29 14:09:15 davep
* Added the ability to produce frames aware HTML code.
*
* Revision 1.10 1996/03/28 18:35:12 davep
* Added the config file allowing the setting of the <BODY> token. This
* will allow you to specify (for example) a background image for the body
* of the message.
*
* Revision 1.9 1996/03/25 11:53:17 davep
* Fixed one more HTML silly.
*
* Revision 1.8 1996/03/22 17:35:40 davep
* Fixed Hex2Byte() which was badly broken. Also did some more work on
* producing correct HTML. The & characters was breaking some viewers
* such as Lynx, Explorer and Mosaic. This now produces a &.
*
* Revision 1.7 1996/03/21 16:45:31 davep
* Changed ReadLong() to work correctly for 16bit compilers.
*
* Revision 1.6 1996/03/20 19:59:46 davep
* Small changes to the style of HTML generated. This fixed the problem
* of some browsers not being able to handle the < and > symbols.
*
* Revision 1.5 1996/03/18 08:00:08 davep
* Fixed the problem with drop menus that have no menu items.
*
* Revision 1.4 1996/02/26 21:14:48 davep
* Added the -href switch.
* Fixed the "no null" bug with the NG header.
*
* Revision 1.3 1996/02/19 20:11:05 davep
* Made some changes so that it should now compile clean under Linux (GCC),
* OS/2 (GCC/EMX) and MS-Dos (Borland, DJGPP). The code still needs a good
* tidy (too much hang-over from Expect Guide) and a comment or two wouldn't
* hurt I guess.
*
* Revision 1.2 1996/02/16 10:40:52 davep
* Now compiles clean under Linux (GCC), OS/2 (EMX) and Dos (BCC).
* Also added a header to each page that gives the user the ability
* to navigate the guide a bit more like NG or EH would.
*
* Revision 1.1 1996/02/15 18:57:13 davep
* Initial revision
*
*/
/* Account for some of the messy stuff we have to do with DOS compilers. */
#if defined( __MSDOS__ )
#include <dir.h>
#if defined( __GNUC__ )
#define _MAX_PATH MAXPATH
#define _MAX_FNAME MAXFILE
#define _MAX_EXT MAXEXT
#define _splitpath fnsplit
#define _makepath fnmerge
#endif
#endif
/* Usual standard header files. */
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
/* Include file for the cfg*() functions. */
#include "cfgfile.h"
/* Structure of the header record of a Norton Guide database. */
typedef struct
{
unsigned short usMagic;
short sUnknown1;
short sUnknown2;
unsigned short usMenuCount;
char szTitle[ 40 ];
char szCredits[ 5 ][ 66 ];
} NGHEADER;
/* Structure to hold a tidy version of the header. */
typedef struct
{
unsigned short usMenuCount;
char szTitle[ 41 ];
char szCredits[ 5 ][ 67 ];
} NGTIDYHEAD;
/* Handy defines. */
#ifndef TRUE
#define TRUE 1
#define FALSE 0
#endif
/* Prototype functions found in this file. */
void ProcessNgRequest( int, char ** );
int LoadWhat( char * );
void ReadNG( FILE *, int, long );
void ShowMainMenu( NGTIDYHEAD *, FILE *, int );
void SkipSection( FILE * );
long FindFirstShort( FILE * );
void ShowMenu( FILE *, int );
void GetStrZ( FILE *, char *, int );
int ReadWord( FILE * );
long ReadLong( FILE * );
void ShowText( FILE *, long );
void ShowShort( FILE * );
void ShowLong( FILE * );
void ExpandText( char * );
unsigned char SaneText( unsigned char );
int Hex2Byte( char * );
void StandardButtons( void );
void TidyHeader( NGHEADER *, NGTIDYHEAD * );
void cgiHeader( void );
void cgiFooter( void );
void PrintHtmlChar( char );
void LoadConfig( void );
#if defined( __MSDOS__ ) || defined( __EMX__ )
char *GetBaseName( char * );
char *UnDosifyPath( char * );
#endif
/* The version number of w3ng. */
#define W3NG_VERSION "1.03"
/* If you are compiling under Dos in 16bit mode, then un-comment the
following: */
/* #define _16_BIT_COMPILER_ */
/* Types of items that can be loaded. */
#define LOAD_INFO 1
#define LOAD_MENU 2
#define LOAD_FMENU 3
#define LOAD_TEXT 4
#define LOAD_HREF 5
#define LOAD_UNKNOWN 6
#if defined( __MSDOS__ ) || defined( __EMX__ )
#define strncasecmp( x, y, z ) strnicmp( x, y, z )
#endif
/* Decrypt the NGs "encryption". */
#define NG_DECRYPT( x ) ( (unsigned char) ( x ^ 0x1A ) )
/* Read a byte and decrypt it. */
#define NG_READBYTE( f ) ( NG_DECRYPT( getc( f ) ) )
/* A couple of file wide variables because I was feeling lazy. */
char *pszBasename; /* The basename of this program. */
char *pszFile; /* The name of the NG we are reading. */
/* Change this to point to the location of the config file. */
#define CONFIG_FILE "/usr/local/etc/httpd/conf/w3ng.conf"
/* Variable settinsg that affect the look of the generated HTML. */
char *pszBodyString = "<BODY>";
int iFrames = FALSE;
char *pszFrameCols = "30%,70%";
/*
* Function.: main()
* Prototype: int main( int argc, char **argv )
* Arguments: You need me to explain that?
* Returns..: Program exit status.
* Notes....: It's main!
*/
int main( int argc, char **argv )
{
if ( argc > 1 )
{
#if defined( __MSDOS__ ) || defined( __EMX__ )
/*
* If we are running on an OS that gives the full path to the exe
* attempt to strip if off, we only want the name of the EXE. I
* could have hard coded this, but what if you change the name of
* the executable?
*/
pszBasename = GetBaseName( argv[ 0 ] );
/*
* Tidy up the name of the Norton Guide database. This means
* tunring all the \s into /s.
*/
pszFile = UnDosifyPath( argv[ 1 ] );
#else
/*
* With luck we are running on some kind of Unix clone, in which
* case, unless I'm wrong, argv[ 0 ] is just the basename of
* the executable.
*/
pszBasename = argv[ 0 ];
pszFile = argv[ 1 ];
#endif
LoadConfig();
ProcessNgRequest( argc, argv );
cfgReset();
#if defined( __MSDOS__ ) || defined( __EMX__ )
free( pszBasename );
free( pszFile );
#endif
}
else
{
cgiHeader();
printf( "usage: %s <file> [ -menu | -info | -href |"
" <offset> ]\n", argv[ 0 ] );
cgiFooter();
}
return( 0 );
}
/*
* Function.: cgiHeader()
* Prototype: void cgiHeader( void )
* Arguments: None.
* Returns..: Nothing.
* Notes....: Display the usual cgi header thingy.
*/
void cgiHeader( void )
{
printf( "Content-type: text/html\n\n<HTML>\n" );
}
/*
* Function.: cgiFooter()
* Prototype: void cgiFooter( void )
* Arguments: None.
* Returns..: Nothing.
* Notes....: Display a footer that says what was used to generate the
* .........: page and display my email address just in case. I won't
* .........: blame you if you change this or take it out.
*/
void cgiFooter( void )
{
printf( "<HR>This page created by w3ng v" W3NG_VERSION
", the Norton Guide to HTML conversion utility. "
"Written by <A HREF=\"http://www.acemake.com/hagbard\">"
"Dave Pearson</A><HR>\n</HTML>\n" );
}
/*
* Function.: ProcessNgRequest()
* Prototype: void ProcessNgRequest( int argc, char **argv )
* Arguments: Guess.
* Returns..: Nothing.
* Notes....: Take the command line, work out what needs doing and farm
* .........: out the work.
*/
void ProcessNgRequest( int argc, char **argv )
{
int iLoadUp = LOAD_UNKNOWN;
long lOffset = 0;
FILE *fleNG = fopen( pszFile, "rb" );
if ( fleNG )
{
if ( argc > 2 )
{
/* If argv[ 2 ] starts with a '-'.... */
if ( *argv[ 2 ] == '-' )
{
/* ....we expect it to be a "command". */
iLoadUp = LoadWhat( &argv[ 2 ][ 1 ] );
}
else
{
/*
* otherwise it should be a value that is the byte offset
* of a page to view from the NG.
*/
lOffset = atol( argv[ 2 ] );
iLoadUp = LOAD_TEXT;
}
}
/* Now we know what we are suposed to be doing, go read the guide. */
ReadNG( fleNG, iLoadUp, lOffset );
fclose( fleNG );
}
else
{
printf( "Error: Can't find %s for opening\n", pszFile );
}
}
/*
* Function.: LoadWhat()
* Prototype: int LoadWhat( char *pszCmd )
* Arguments: <pszCmd> is a pointer to a null terminated string. This will
* .........: contain a "command".
* Returns..: One of the LOAD_* constants to tell the caller what the
* .........: command asked for.
* Notes....: Takes a string command and works out what the caller is asking
* .........: for.
*/
int LoadWhat( char *pszCmd )
{
int iWhat = LOAD_UNKNOWN;
if ( strncasecmp( pszCmd, "INFO", 4 ) == 0 )
{
/* Display the "info" or "about" info for the guide. */
iWhat = LOAD_INFO;
}
else if ( strncasecmp( pszCmd, "MENU", 4 ) == 0 )
{
/* Display the top level menu. */
iWhat = LOAD_MENU;
}
else if ( strncasecmp( pszCmd, "FMENU", 5 ) == 0 )
{
/* Display the framed menu. */
iWhat = LOAD_FMENU;
}
else if ( strncasecmp( pszCmd, "HREF", 4 ) == 0 )
{
/* Display a href for the guide. */
iWhat = LOAD_HREF;
}
return( iWhat );
}
/*
* Function.: ReadNG()
* Prototype: void ReadNG( FILE *fleNG, int iLoadUp, long lOffset )
* Arguments: <fleNG> is the (FILE *) handle for the Norton Guide.
* .........: <iLoadUp> is the ID of what we should load.
* .........: <lOffset> is the offset if this is a page and not a menu.
* Returns..: Nothing.
* Notes....: Based on what we are suppose to do, this function
* .........: DoesTheRightThing(TM).
*/
void ReadNG( FILE *fleNG, int iLoadUp, long lOffset )
{
NGHEADER ngHeader;
NGTIDYHEAD ngTidyHead;
/*
* Read in the header. Note that for the moment I don't check the
* magic number, so if you try to read a file that isn't a guide
* things could get strange. I will tidy this up at some point.
*/
(void) fread( &ngHeader, sizeof( NGHEADER ), 1, fleNG );
/* Now tidy up the header. */
TidyHeader( &ngHeader, &ngTidyHead );
/* We could be looking at a guide that has no menu, if so, find the
first short entry and use that instead. */
if ( !ngTidyHead.usMenuCount && ( iLoadUp == LOAD_MENU ||
iLoadUp == LOAD_FMENU ))
{
iLoadUp = LOAD_TEXT;
if ( !( lOffset = FindFirstShort( fleNG ) ) )
{
printf( "w3ng error: Can't find a menu or short entry\n" );
exit( 1 );
}
}
switch ( iLoadUp )
{
case LOAD_INFO : /* Load the "info" or "about" details for the guide. */
cgiHeader();
printf( "<HEAD><TITLE>%s - Information</TITLE></HEAD>\n",
ngTidyHead.szTitle );
printf( "%s<PRE> Title: %s\n", pszBodyString, ngTidyHead.szTitle );
printf( "Credits: %s\n"
" %s\n"
" %s\n"
" %s\n"
" %s\n</PRE></BODY>",
ngTidyHead.szCredits[ 0 ],
ngTidyHead.szCredits[ 1 ],
ngTidyHead.szCredits[ 2 ],
ngTidyHead.szCredits[ 3 ],
ngTidyHead.szCredits[ 4 ] );
cgiFooter();
break;
case LOAD_MENU : /* Load the top level menu for the guide */
cgiHeader();
printf( "<HEAD><TITLE>%s - Menu</TITLE></HEAD>\n",
ngTidyHead.szTitle );
if ( iFrames )
{
printf( "<FRAMESET COLS=\"%s\">\n<NOFRAMES>", pszFrameCols );
}
printf( "%s\n", pszBodyString );
ShowMainMenu( &ngTidyHead, fleNG, FALSE );
printf( "</BODY>" );
if ( iFrames )
{
printf( "</NOFRAMES>\n<FRAME SRC=\"/cgi-bin/%s?%s+-fmenu\" "
"NAME=\"menu\">\n<FRAME SRC=\"/cgi-bin/%s?%s+-info\" "
"NAME=\"display\">\n</FRAMESET>\n</HTML>\n", pszBasename,
pszFile, pszBasename, pszFile );
}
else
{
cgiFooter();
}
break;
case LOAD_FMENU : /* Load the framed menu. */
cgiHeader();
printf( "<HEAD><TITLE>%s - Menu</TITLE></HEAD>\n",
ngTidyHead.szTitle );
printf( "%s\n", pszBodyString );
ShowMainMenu( &ngTidyHead, fleNG, TRUE );
printf( "</BODY>" );
cgiFooter();
break;
case LOAD_TEXT : /* Load a page from the guide. */
cgiHeader();
printf( "<HEAD><TITLE>%s - Text</TITLE></HEAD>\n",
ngTidyHead.szTitle );
printf( "%s<PRE>\n", pszBodyString );
ShowText( fleNG, lOffset );
printf( "</PRE></BODY>\n" );
cgiFooter();
break;
case LOAD_HREF : /* Display a href for the guide. */
printf( "<A HREF=\"/cgi-bin/%s?%s+-menu\">%s</A>",
pszBasename, pszFile, ngTidyHead.szTitle );
}
}
/*
* Function.: ShowMainMenu()
* Prototype: void ShowMainMenu( NGTIDYHEAD *ngHeader, FILE *fleNG )
* Arguments: <ngHeader> is a NGTIDYHEAD structure populated with cleaned
* .........: up contents of the NG header.
* .........: <fleNG> is the (FILE *) handle of the NG.
* Returns..: Nothing.
* Notes....: Scans thru the NG, finds the main menu and displays it.
*/
void ShowMainMenu( NGTIDYHEAD *ngHeader, FILE *fleNG, int iFramed )
{
int iID;
int i = 0;
printf( "<OL>\n" );
do
{
iID = ReadWord( fleNG );
switch ( iID )
{
case 0 :
case 1 :
SkipSection( fleNG );
break;
case 2 :
ShowMenu( fleNG, iFramed );
++i;
break;
default :
iID = 5;
}
} while ( iID != 5 && i != ngHeader->usMenuCount );
printf( "</OL>\n" );
}
/*
*/
long FindFirstShort( FILE *f )
{
long lOffset = 0L;
int iID;
do
{
iID = ReadWord( f );
switch( iID )
{
case 0 :
lOffset = ftell( f ) - (long) sizeof( short );
iID = 5;
break;
case 1 :
SkipSection( f );
break;
case 2 :
SkipSection( f );
break;
default :
iID = 5;
}
} while ( iID != 5 );
return( lOffset );
}
/*
*/
void SkipSection( FILE *fleNG )
{
int iLen = ReadWord( fleNG );
fseek( fleNG, (long) 22L + iLen, SEEK_CUR );
}
/*
*/
void ShowMenu( FILE *fleNG, int iFramed )
{
int iItems;
int i;
long l;
char szTitle[ 51 ];
long *lpOffsets;
(void) ReadWord( fleNG );
iItems = ReadWord( fleNG );
fseek( fleNG, 20L, SEEK_CUR );
lpOffsets = (long *) calloc( iItems, sizeof( long ) );
assert( lpOffsets ); /* Ouch! */
for ( i = 1; i < iItems; i++ )
{
lpOffsets[ i - 1 ] = ReadLong( fleNG );
}
l = ftell( fleNG );
l += ( 8 * iItems );
fseek( fleNG, l, SEEK_SET );
GetStrZ( fleNG, szTitle, 40 );
printf( "<H2><LI>%s</LI></H2><P>\n", szTitle );
printf( "<OL>\n" );
for ( i = 1; i < iItems; i++ )
{
GetStrZ( fleNG, szTitle, 50 );
if ( !*szTitle )
{
strcpy( szTitle, "(No Text For Menu Item)" );
}
printf( "<H3><LI><A HREF=\"/cgi-bin/%s?%s+%ld\""
"%s>%s</H3></A></LI><P>\n", pszBasename, pszFile,
lpOffsets[ i - 1 ], iFramed ? " TARGET=\"display\"" : "",
szTitle );
}
printf( "</OL>\n" );
(void) getc( fleNG );
free( lpOffsets );
}
/*
*/
void ShowText( FILE *fleNG, long lOffset )
{
int iID;
fseek( fleNG, lOffset, SEEK_SET );
iID = ReadWord( fleNG );
if ( iID == 0 )
{
ShowShort( fleNG );
}
else if ( iID == 1 )
{
ShowLong( fleNG );
}
else
{
printf( "%s error: Unknown type ID of #%d", pszBasename, iID );
}
}
/*
*/
void ShowShort( FILE *fleNG )
{
int iItems;
long *plOffsets;
int i;
char szBuffer[ 512 ];
long lParent;
unsigned uParentLine;
(void) ReadWord( fleNG );
iItems = ReadWord( fleNG );
(void) ReadWord( fleNG );
uParentLine = (unsigned) ReadWord( fleNG );
lParent = ReadLong( fleNG );
fseek( fleNG, 12L, SEEK_CUR );
plOffsets = (long *) calloc( iItems, sizeof( long ) );
assert( plOffsets ); /* Ouch! */
for ( i = 0; i < iItems; i++ )
{
ReadWord( fleNG );
plOffsets[ i ] = ReadLong( fleNG );
}
printf( "</PRE>" );
if ( lParent > 0 && uParentLine < 0xFFFF )
{
printf( "<A HREF=\"/cgi-bin/%s?%s+%ld\">[^^Up^^]</A>",
pszBasename, pszFile, lParent );
}
else
{
printf( "[^^Up^^] " );
}
StandardButtons();
printf( "<HR><PRE>" );
for ( i = 0; i < iItems; i++ )
{
GetStrZ( fleNG, szBuffer, sizeof( szBuffer ) );
if ( plOffsets[ i ] > 0 )
{
printf( "<A HREF=\"/cgi-bin/%s?%s+%ld\">",
pszBasename, pszFile, plOffsets[ i ] );
ExpandText( szBuffer );
printf( "</A>\n" );
}
else
{
ExpandText( szBuffer );
printf( "\n" );
}
}
free( plOffsets );
}
/*
*/
void ShowLong( FILE *fleNG )
{
int iItems;
int iSeeAlsos;
int i;
int iCnt;
long lPrevious;
long lNext;
char szBuffer[ 512 ];
long *plOffsets;
long lParent;
unsigned uParentLine;
(void) ReadWord( fleNG );
iItems = ReadWord( fleNG );
iSeeAlsos = ReadWord( fleNG );
uParentLine = (unsigned) ReadWord( fleNG );
lParent = ReadLong( fleNG );
fseek( fleNG, 4L, SEEK_CUR );
lPrevious = ReadLong( fleNG );
lNext = ReadLong( fleNG );
lPrevious = ( lPrevious == -1L ? 0L : lPrevious );
lNext = ( lNext == -1L ? 0L : lNext );
printf( "</PRE>" );
if ( lPrevious )
{
printf( "<A HREF=\"/cgi-bin/%s?%s+%ld\">[<<Previous Entry]"
"</A> ", pszBasename, pszFile, lPrevious );
}
else
{
printf( "[<<Previous Entry] " );
}
if ( lParent > 0 && uParentLine < 0xFFFF )
{
printf( "<A HREF=\"/cgi-bin/%s?%s+%ld\">[^^Up^^]</A> ",
pszBasename, pszFile, lParent );
}
else
{
printf( "[^^Up^^] " );
}
if ( lNext )
{
printf( "<A HREF=\"/cgi-bin/%s?%s+%ld\">[Next Entry>>]</A>",
pszBasename, pszFile, lNext );
}
else
{
printf( "[Next Entry>>] " );
}
StandardButtons();
printf( "<HR><PRE>" );
for ( i = 0; i < iItems; i++ )
{
GetStrZ( fleNG, szBuffer, sizeof( szBuffer ) );
ExpandText( szBuffer );
printf( "\n" );
}
if ( iSeeAlsos )
{
printf( "</PRE><HR><B>See Also:</B> " );
iCnt = ReadWord( fleNG );
plOffsets = (long *) calloc( iCnt, sizeof( long ) );
for ( i = 0; i < iCnt; i++ )
{
/* There is a reason for this < 20 check, but
I can't remember what it is, so I'll leave
it in for the moment. */
if ( i < 20 )
{
plOffsets[ i ] = ReadLong( fleNG );
}
else
{
fseek( fleNG, 4L, SEEK_SET );
}
}
for ( i = 0; i < iCnt; i++ )
{
if ( i < 20 )
{
GetStrZ( fleNG, szBuffer, sizeof( szBuffer ) );
printf( "<A HREF=\"/cgi-bin/%s?%s+%ld\">"
"%s</A> ",
pszBasename, pszFile,
plOffsets[ i ], szBuffer );
}
}
printf( "<PRE>" );
}
}
/*
*/
int ReadWord( FILE *f )
{
unsigned char b1 = NG_READBYTE( f );
unsigned char b2 = NG_READBYTE( f );
return( ( b2 << 8 ) + b1 );
}
/*
*/
long ReadLong( FILE *f )
{
int i1 = ReadWord( f );
int i2 = ReadWord( f );
#ifdef _16_BIT_COMPILER_
long l = 0;
int *i = (int *) &l;
i[ 0 ] = i1;
i[ 1 ] = i2;
return( (long) l );
#else
return( ( i2 << 16 ) + i1 );
#endif
}
/*
*/
void GetStrZ( FILE *f, char *pszBuffer, int iMax )
{
long lSavPos = ftell( f );
int fEOS = 0;
int i;
(void) fread( pszBuffer, iMax, 1, f );
for ( i = 0; i < iMax && !fEOS; i++, pszBuffer++ )
{
*pszBuffer = NG_DECRYPT( *pszBuffer );
fEOS = ( *pszBuffer == 0 );
}
fseek( f, (long) lSavPos + i, SEEK_SET );
}
/*
*/
void ExpandText( char *pszText )
{
char *psz = pszText;
int iBold = 0;
int iUnder = 0;
int iSpaces;
int i;
while ( *psz )
{
switch ( *psz )
{
case '^' :
++psz;
switch ( *psz )
{
case 'a' :
case 'A' :
++psz;
/* I suppose I could use the colour attribute, but for
the moment just skip it. */
(void) Hex2Byte( psz );
++psz;
break;
case 'b' :
case 'B' :
printf( iBold ? "</B>" : "<B>" );
iBold = !iBold;
break;
case 'c' :
case 'C' :
++psz;
PrintHtmlChar( SaneText( Hex2Byte( psz ) ) );
++psz;
break;
case 'n' :
case 'N' :
if ( iBold ) printf( "</B>" );
if ( iUnder ) printf( "</U>" );
iBold = 0;
iUnder = 0;
break;
case 'r' :
case 'R' :
/* Turn on reverse */
break;
case 'u' :
case 'U' :
printf( iUnder ? "</U>" : "<U>" );
iUnder = !iUnder;
break;
case '^' :
putchar( '^' );
break;
default :
--psz;
}
break;
case (char) 0xFF :
++psz;
iSpaces = *psz;
for ( i = 0; i < iSpaces; i++ )
{
putchar( ' ' );
}
break;
default :
PrintHtmlChar( SaneText( *psz ) );
break;
}
++psz;
}
if ( iBold ) printf( "</B>" );
if ( iUnder ) printf( "</U>" );
}
/*
*/
unsigned char SaneText( unsigned char bChar )
{
switch ( bChar )
{
case 0xB3 : /* Vertical graphics. */
case 0xB4 :
case 0xB5 :
case 0xB6 :
case 0xB9 :
case 0xBA :
case 0xC3 :
case 0xCC :
bChar = '|';
break;
case 0xC4 : /* Horizontal graphics. */
case 0xC1 :
case 0xC2 :