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/************************************************************************/
/* */
/* Simple io streams using the C stdio. */
/* */
/************************************************************************/
# include "config.h"
# include <stdlib.h>
# include <X11/Xlib.h>
# include <X11/Xatom.h>
# include <sioXprop.h>
# include <debugon.h>
static int sioXpropClose( void * voidp )
{ free( voidp ); return 0; }
static int sioXpropSeek( void * voidp,
long pos )
{ LDEB(pos); return -1; }
typedef struct XpropInputStream
{
Display * xisDisplay;
Window xisWindow;
Atom xisProperty;
long xisOffset;
long xisExhausted;
} XpropInputStream;
static int sioInXpropReadBytes( void * voidxis,
unsigned char * buffer,
int count )
{
XpropInputStream * xis= (XpropInputStream *)voidxis;
Atom typeFound;
int formatFound;
unsigned long itemsReturned;
unsigned long itemsLeft;
unsigned char * dataReturned;
int ret;
if ( xis->xisExhausted )
{ return -1; }
ret= XGetWindowProperty( xis->xisDisplay, xis->xisWindow, xis->xisProperty,
xis->xisOffset/4, count/4, False, AnyPropertyType,
&typeFound, &formatFound,
&itemsReturned, &itemsLeft, &dataReturned );
if ( ret != Success )
{ LLDEB(ret,Success); return -1; }
if ( itemsReturned == 0 )
{ LDEB(itemsReturned); return -1; }
if ( formatFound != 8 )
{ LLDEB(typeFound,formatFound); return -1; }
memcpy( buffer, dataReturned, itemsReturned );
XFree( dataReturned );
xis->xisOffset += itemsReturned;
if ( itemsLeft == 0 )
{ xis->xisExhausted= 1; }
return itemsReturned;
}
SimpleInputStream * sioInXpropOpen( Display * display,
Window win,
Atom property )
{
SimpleInputStream * sis;
XpropInputStream * xis;
xis= (XpropInputStream *)malloc( sizeof( XpropInputStream ) );
if ( ! xis )
{ XDEB(xis); return (SimpleInputStream *)0; }
xis->xisDisplay= display;
xis->xisWindow= win;
xis->xisProperty= property;
xis->xisOffset= 0L;
xis->xisExhausted= 0;
sis= sioInOpen( (void *)xis,
sioInXpropReadBytes, sioXpropSeek, sioXpropClose );
if ( ! sis )
{ XDEB(sis); free( xis ); return (SimpleInputStream *)0; }
return sis;
}
int sioInXpropEraseAndClose( SimpleInputStream * sis )
{
int rval= 0;
XpropInputStream * xis= (XpropInputStream *)sis->sisPrivate;
Atom typeFound;
int formatFound;
unsigned long itemsReturned;
unsigned long itemsLeft;
unsigned char * dataReturned;
int ret;
ret= XGetWindowProperty( xis->xisDisplay, xis->xisWindow, xis->xisProperty,
0L, 0, True, AnyPropertyType,
&typeFound, &formatFound,
&itemsReturned, &itemsLeft, &dataReturned );
if ( ret != Success )
{ LLDEB(ret,Success); rval= -1; }
if ( sioInClose( sis ) )
{ LDEB(1); rval= -1; }
return rval;
}
typedef struct XpropOutputStream
{
Display * xosDisplay;
Window xosRequestor;
Atom xosProperty;
Atom xosTarget;
int xosPropMode;
} XpropOutputStream;
static int sioOutXpropWriteBytes( void * voidxsc,
const unsigned char * buffer,
int count )
{
XpropOutputStream * xos= (XpropOutputStream *)voidxsc;
XChangeProperty( xos->xosDisplay, xos->xosRequestor,
xos->xosProperty, xos->xosTarget,
8, xos->xosPropMode, buffer, count );
xos->xosPropMode= PropModeAppend;
return count;
}
SimpleOutputStream * sioOutXpropOpen( Display * display,
Window requestor,
Atom property,
Atom target )
{
SimpleOutputStream * sos;
XpropOutputStream * xos;
xos= (XpropOutputStream *)malloc( sizeof( XpropOutputStream ) );
if ( ! xos )
{ XDEB(xos); return (SimpleOutputStream *)0; }
xos->xosDisplay= display;
xos->xosRequestor=requestor;
xos->xosProperty=property;
xos->xosTarget=target;
xos->xosPropMode= PropModeReplace;
sos= sioOutOpen( (void *)xos, sioOutXpropWriteBytes,
sioXpropSeek, sioXpropClose );
if ( ! sos )
{ XDEB(sos); free( xos ); return (SimpleOutputStream *)0; }
return sos;
}
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