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/*
** Modified version of GUSISIOUX.cp especially for Python.
** Changes (by Jack):
** - Optionally delay the console window until something is written to it.
** - Tell the upper layers whether the last command was a read or a write.
** - Tell SIOUX not to use WaitNextEvent (both Python and SIOUX trying to be
** nice to background apps means we're yielding almost 100% of the time).
** - Make sure signals are processed when returning from read/write.
*/
#define GUSI_SOURCE
#include "GUSIInternal.h"
#include "GUSISIOUX.h"
#include "GUSIDevice.h"
#include "GUSIDescriptor.h"
#include "GUSIBasics.h"
#include "GUSIDiag.h"
//#ifndef WITHOUT_JACK_MODS
//#include "GUSIConfig.h"
//#endif
#include <LowMem.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <errno.h>
#include <console.h>
#include "Python.h"
#include "macglue.h"
extern Boolean SIOUXUseWaitNextEvent;
class GUSISIOUXSocket : public GUSISocket {
public:
~GUSISIOUXSocket();
ssize_t read(const GUSIScatterer & buffer);
ssize_t write(const GUSIGatherer & buffer);
virtual int ioctl(unsigned int request, va_list arg);
virtual int fstat(struct stat * buf);
virtual int isatty();
bool select(bool * canRead, bool * canWrite, bool *);
static GUSISIOUXSocket * Instance();
private:
static GUSISIOUXSocket * sInstance;
GUSISIOUXSocket();
bool initialized;
void Initialize();
bool fDelayConsole;
};
class GUSISIOUXDevice : public GUSIDevice {
public:
static GUSISIOUXDevice * Instance();
virtual bool Want(GUSIFileToken & file);
virtual GUSISocket * open(GUSIFileToken &, int flags);
private:
GUSISIOUXDevice() {}
static GUSISIOUXDevice * sInstance;
};
GUSISIOUXSocket * GUSISIOUXSocket::sInstance;
GUSISIOUXSocket * GUSISIOUXSocket::Instance()
{
if (!sInstance)
if (sInstance = new GUSISIOUXSocket)
sInstance->AddReference();
return sInstance;
}
// This declaration lies about the return type
extern "C" void SIOUXHandleOneEvent(EventRecord *userevent);
GUSISIOUXSocket::GUSISIOUXSocket()
{
if (PyMac_GetDelayConsoleFlag())
fDelayConsole = true;
else
fDelayConsole = false;
if ( fDelayConsole )
initialized = 0;
else
Initialize();
/* Tell the upper layers there's no unseen output */
PyMac_OutputSeen();
}
void
GUSISIOUXSocket::Initialize()
{
initialized = 1;
InstallConsole(0);
GUSISetHook(GUSI_EventHook+nullEvent, (GUSIHook)SIOUXHandleOneEvent);
GUSISetHook(GUSI_EventHook+mouseDown, (GUSIHook)SIOUXHandleOneEvent);
GUSISetHook(GUSI_EventHook+mouseUp, (GUSIHook)SIOUXHandleOneEvent);
GUSISetHook(GUSI_EventHook+updateEvt, (GUSIHook)SIOUXHandleOneEvent);
GUSISetHook(GUSI_EventHook+diskEvt, (GUSIHook)SIOUXHandleOneEvent);
GUSISetHook(GUSI_EventHook+activateEvt, (GUSIHook)SIOUXHandleOneEvent);
GUSISetHook(GUSI_EventHook+osEvt, (GUSIHook)SIOUXHandleOneEvent);
}
GUSISIOUXSocket::~GUSISIOUXSocket()
{
if ( !initialized ) return;
RemoveConsole();
}
ssize_t GUSISIOUXSocket::read(const GUSIScatterer & buffer)
{
if ( !initialized ) Initialize();
GUSIStdioFlush();
PyMac_OutputSeen();
return buffer.SetLength(
ReadCharsFromConsole((char *) buffer.Buffer(), (int)buffer.Length()));
GUSIContext::Yield(kGUSIPoll);
}
ssize_t GUSISIOUXSocket::write(const GUSIGatherer & buffer)
{
ssize_t rv;
if ( !initialized ) Initialize();
PyMac_OutputNotSeen();
SIOUXUseWaitNextEvent = false;
rv = WriteCharsToConsole((char *) buffer.Buffer(), (int)buffer.Length());
GUSIContext::Yield(kGUSIPoll);
return rv;
}
int GUSISIOUXSocket::ioctl(unsigned int request, va_list)
{
switch (request) {
case FIOINTERACTIVE:
return 0;
default:
return GUSISetPosixError(EOPNOTSUPP);
}
}
int GUSISIOUXSocket::fstat(struct stat * buf)
{
GUSISocket::fstat(buf);
buf->st_mode = S_IFCHR | 0666;
return 0;
}
int GUSISIOUXSocket::isatty()
{
return 1;
}
static bool input_pending()
{
#if !TARGET_API_MAC_CARBON
// Jack thinks that completely removing this code is a bit
// too much...
QHdrPtr eventQueue = LMGetEventQueue();
EvQElPtr element = (EvQElPtr)eventQueue->qHead;
// now, count the number of pending keyDown events.
while (element != nil) {
if (element->evtQWhat == keyDown || element->evtQWhat == autoKey)
return true;
element = (EvQElPtr)element->qLink;
}
#endif
return false;
}
bool GUSISIOUXSocket::select(bool * canRead, bool * canWrite, bool *)
{
if ( !initialized ) Initialize();
bool cond = false;
if (canRead)
if (*canRead = input_pending())
cond = true;
if (canWrite)
cond = *canWrite = true;
return cond;
}
GUSISIOUXDevice * GUSISIOUXDevice::sInstance;
GUSISIOUXDevice * GUSISIOUXDevice::Instance()
{
if (!sInstance)
sInstance = new GUSISIOUXDevice();
return sInstance;
}
bool GUSISIOUXDevice::Want(GUSIFileToken & file)
{
switch (file.WhichRequest()) {
case GUSIFileToken::kWillOpen:
return file.IsDevice() && (file.StrStdStream(file.Path()) > -1);
default:
return false;
}
}
GUSISocket * GUSISIOUXDevice::open(GUSIFileToken &, int)
{
return GUSISIOUXSocket::Instance();
}
void GUSISetupConsoleDescriptors()
{
GUSIDescriptorTable * table = GUSIDescriptorTable::Instance();
GUSISIOUXSocket * SIOUX = GUSISIOUXSocket::Instance();
table->InstallSocket(SIOUX);
table->InstallSocket(SIOUX);
table->InstallSocket(SIOUX);
}
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