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d6e11ca84d
yap-6.3/console/LGPL/pl-ntmain.c
U-WIN-U2045GN0RNQ\Vítor Santos Costa 3f04f14264 fixes for YAP in console code.
2011-08-18 22:34:47 +01:00

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/* $Id$
Part of SWI-Prolog
Author: Jan Wielemaker
E-mail: jan@swi.psy.uva.nl
WWW: http://www.swi-prolog.org
Copyright (C): 1985-2002, University of Amsterdam
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <windows.h>
#include <tchar.h>
#include <malloc.h>
#include <stdio.h>
#include "SWI-Stream.h"
#include "SWI-Prolog.h"
#include <ctype.h>
#ifdef _YAP_NOT_INSTALLED_
#include "LGPL/swi_console/console.h"
#else
#include "win32/console/console.h"
#endif
#include <signal.h>
#ifdef O_PLMT
#include <pthread.h>
#endif
#include "pl-utf8.c" /* we're not in the libpl.dll module */
#ifndef streq
#define streq(s,q) (strcmp((s), (q)) == 0)
#endif
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Main program for running SWI-Prolog from a window. The window provides
X11-xterm like features: scrollback for a predefined number of lines,
cut/paste and the GNU readline library for command-line editing.
This module combines libpl.dll and plterm.dll with some glue to produce
the final executable swipl-win.exe.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
__declspec(dllexport) rlc_console PL_current_console();
static int type_error(term_t actual, const char *expected);
static int domain_error(term_t actual, const char *expected);
static HWND create_prolog_hidden_window(rlc_console c);
static int get_chars_arg_ex(int a, term_t t, TCHAR **v);
#define RLC_PROLOG_WINDOW RLC_VALUE(0) /* GetCurrentThreadID() */
#define RLC_PROLOG_INPUT RLC_VALUE(1) /* Input stream (IOSTREAM*) */
#define RLC_PROLOG_OUTPUT RLC_VALUE(2) /* Output stream (IOSTREAM*) */
#define RLC_PROLOG_ERROR RLC_VALUE(3) /* Error stream (IOSTREAM*) */
#define RLC_REGISTER RLC_VALUE(4) /* Trap destruction */
/*******************************
* CONSOLE ADM *
*******************************/
CRITICAL_SECTION mutex;
#define LOCK() EnterCriticalSection(&mutex)
#define UNLOCK() LeaveCriticalSection(&mutex)
static rlc_console *consoles; /* array of consoles */
static int consoles_length; /* size of this array */
static void
unregisterConsole(uintptr_t data)
{ rlc_console c = (rlc_console)data;
rlc_console *p;
int n;
LOCK();
for(p=consoles, n=0; n++<consoles_length; p++)
{ if ( *p == c )
{ *p = NULL;
break;
}
}
UNLOCK();
}
static void
registerConsole(rlc_console c)
{ rlc_console *p;
int n;
LOCK();
for(;;)
{ for(p=consoles, n=0; n++<consoles_length; p++)
{ if ( !*p )
{ *p = c;
rlc_set(c, RLC_REGISTER, (uintptr_t)c, unregisterConsole);
UNLOCK();
return;
}
}
if ( consoles_length )
{ int bytes = consoles_length*sizeof(rlc_console);
consoles = PL_realloc(consoles, bytes*2);
memset(consoles+consoles_length, 0, bytes);
consoles_length *= 2;
} else
{ consoles_length = 10;
consoles = PL_malloc(consoles_length*sizeof(rlc_console));
memset(consoles, 0, consoles_length*sizeof(rlc_console));
}
}
}
void
closeConsoles()
{ int i;
rlc_console *p;
LOCK();
for(i=0, p=consoles; i<consoles_length; i++, p++)
{ if ( *p )
rlc_close(*p);
}
UNLOCK();
}
/*******************************
* BIND STREAM STUFF *
*******************************/
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
First step: bind the console I/O to the Sinput/Soutput and Serror
streams.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
static ssize_t
Srlc_read(void *handle, char *buffer, size_t size)
{ rlc_console c = handle;
size_t bytes;
PL_write_prompt(TRUE);
if ( Suser_input &&
Suser_input->handle == c &&
PL_ttymode(Suser_input) == PL_RAWTTY )
{ int chr = getkey(c);
TCHAR *tbuf = (TCHAR*)buffer;
if ( chr == 04 || chr == 26 || chr == -1 )
{ bytes = 0;
} else
{ tbuf[0] = chr;
bytes = sizeof(TCHAR);
}
} else
{ bytes = rlc_read(c, (TCHAR*)buffer, size/sizeof(TCHAR));
bytes *= sizeof(TCHAR);
}
if ( bytes == 0 || buffer[bytes-1] == '\n' )
PL_prompt_next(0);
return bytes;
}
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
The user streams for swipl-win.exe run using the 'wchar' encoding. This
means size must be a multiple of sizeof(wchar_t), but not if the user
cheats and either switches the encoding or uses put_byte/1 or similar.
The flushing code will remember `half' characters and re-send them as
more data comes ready. This means however that after a put_byte(X), the
wchar_t stream is out-of-sync and produces unreadable output. We will
therefore pad it with '?' characters to re-sync the stream.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
static ssize_t
Srlc_write(void *handle, char *buffer, size_t size)
{ rlc_console c = handle;
ssize_t n;
if (size==1) {
TCHAR buf ='\0';
char *bufp = (char *)&buf;
if (!buffer[0]) return 1;
bufp[0] = buffer[0];
size = sizeof(TCHAR);
n = rlc_write(c, &buf, size/sizeof(TCHAR));
return (n ? 1 : 0);
} else {
n = rlc_write(c, (TCHAR*)buffer, size/sizeof(TCHAR));
}
n *= sizeof(TCHAR);
if ( n < (ssize_t)size && size-n < sizeof(TCHAR) )
{ char buf[sizeof(TCHAR)]; /* Pad to TCHAR */
size_t i = sizeof(TCHAR) - (size-n);
memcpy(buf, buffer+n, i);
for(; i<sizeof(TCHAR); i++)
buf[i] = '?';
rlc_write(c, (TCHAR*)buffer, 1);
return size;
}
return n;
}
static int
Srlc_close(void *handle)
{ rlc_console c = handle;
uintptr_t v;
int closed = 0;
if ( rlc_get(handle, RLC_PROLOG_INPUT, &v) && v &&
((IOSTREAM *)v)->flags && SIO_CLOSING )
{ rlc_set(handle, RLC_PROLOG_INPUT, 0L, NULL);
closed++;
} else if ( rlc_get(handle, RLC_PROLOG_OUTPUT, &v) && v &&
((IOSTREAM *)v)->flags && SIO_CLOSING )
{ rlc_set(handle, RLC_PROLOG_OUTPUT, 0L, NULL);
closed++;
} else if ( rlc_get(handle, RLC_PROLOG_ERROR, &v) && v &&
((IOSTREAM *)v)->flags && SIO_CLOSING )
{ rlc_set(handle, RLC_PROLOG_ERROR, 0L, NULL);
}
if ( closed &&
rlc_get(handle, RLC_PROLOG_INPUT, &v) && v == 0L &&
rlc_get(handle, RLC_PROLOG_OUTPUT, &v) && v == 0L )
rlc_close(c);
return 0;
}
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
The role of this function is to stop changing the encoding of the plwin
output. We must return -1 for SIO_SETENCODING for this. As we do not
implement any of the other control operations we simply return -1 for
all commands we may be requested to handle.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
static int
Srlc_control(void *handle, int cmd, void *closure)
{ return -1;
}
static IOFUNCTIONS rlc_functions;
static void
rlc_bind_terminal(rlc_console c)
{ rlc_functions = *Sinput->functions;
rlc_functions.read = Srlc_read;
rlc_functions.write = Srlc_write;
rlc_functions.close = Srlc_close;
rlc_functions.control = Srlc_control;
Sinput->functions = &rlc_functions;
Soutput->functions = &rlc_functions;
Serror->functions = &rlc_functions;
Sinput->handle = c;
Soutput->handle = c;
Serror->handle = c;
Sinput->encoding = ENC_WCHAR;
Soutput->encoding = ENC_WCHAR;
Serror->encoding = ENC_WCHAR;
}
static int
process_console_options(rlc_console_attr *attr, term_t options)
{ term_t tail = PL_copy_term_ref(options);
term_t opt = PL_new_term_ref();
while(PL_get_list(tail, opt, tail))
{ atom_t name;
const char *s;
int arity;
if ( !PL_get_name_arity(opt, &name, &arity) )
return type_error(opt, "compound");
s = PL_atom_chars(name);
if ( streq(s, "registry_key") && arity == 1 )
{ TCHAR *key;
if ( !get_chars_arg_ex(1, opt, &key) )
return FALSE;
attr->key = key;
} else
return domain_error(opt, "window_option");
}
if ( !PL_get_nil(tail) )
return type_error(tail, "list");
return TRUE;
}
static void /* handle console destruction */
free_stream(uintptr_t handle)
{ IOSTREAM *s = (IOSTREAM*) handle;
Sclose(s);
}
static foreign_t
pl_win_open_console(term_t title, term_t input, term_t output, term_t error,
term_t options)
{ rlc_console_attr attr;
rlc_console c;
IOSTREAM *in, *out, *err;
TCHAR *s;
size_t len;
memset(&attr, 0, sizeof(attr));
if ( !PL_get_wchars(title, &len, &s, CVT_ALL|BUF_RING) )
return type_error(title, "text");
attr.title = (const TCHAR*) s;
if ( !process_console_options(&attr, options) )
return FALSE;
c = rlc_create_console(&attr);
create_prolog_hidden_window(c); /* for sending messages */
registerConsole(c);
#define STREAM_COMMON (SIO_TEXT| /* text-stream */ \
SIO_NOCLOSE| /* do no close on abort */ \
SIO_ISATTY| /* terminal */ \
SIO_NOFEOF) /* reset on end-of-file */
in = Snew(c, SIO_INPUT|SIO_LBUF|STREAM_COMMON, &rlc_functions);
out = Snew(c, SIO_OUTPUT|SIO_LBUF|STREAM_COMMON, &rlc_functions);
err = Snew(c, SIO_OUTPUT|SIO_NBUF|STREAM_COMMON, &rlc_functions);
in->position = &in->posbuf; /* record position on same stream */
out->position = &in->posbuf;
err->position = &in->posbuf;
in->encoding = ENC_WCHAR;
out->encoding = ENC_WCHAR;
err->encoding = ENC_WCHAR;
if ( !PL_unify_stream(input, in) ||
!PL_unify_stream(output, out) ||
!PL_unify_stream(error, err) )
{ Sclose(in);
Sclose(out);
Sclose(err);
rlc_close(c);
return FALSE;
}
rlc_set(c, RLC_PROLOG_INPUT, (uintptr_t)in, NULL);
rlc_set(c, RLC_PROLOG_OUTPUT, (uintptr_t)out, NULL);
rlc_set(c, RLC_PROLOG_ERROR, (uintptr_t)err, free_stream);
return TRUE;
}
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Note: actually rlc_add_history() removes duplicates and empty lines.
Also, read_line() already updates the history. Maybe this should just
return TRUE? This however would not allow for programmatically inserting
things in the history. This shouldn't matter.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
static foreign_t
pl_rl_add_history(term_t text)
{ atom_t a;
static atom_t last = 0;
if ( PL_get_atom(text, &a) )
{ if ( a != last )
{ TCHAR *s;
if ( last )
PL_unregister_atom(last);
last = a;
PL_register_atom(last);
PL_get_wchars(text, NULL, &s, CVT_ATOM);
rlc_add_history(PL_current_console(), s);
}
return TRUE;
}
return FALSE;
}
static foreign_t
pl_rl_read_init_file(term_t file)
{ PL_succeed;
}
/*******************************
* COMPLETION *
*******************************/
static RlcCompleteFunc file_completer;
static int
prolog_complete(RlcCompleteData data)
{ Line ln = data->line;
switch(data->call_type)
{ case COMPLETE_INIT:
{ size_t start = ln->point;
wint_t c;
if ( !ln->data ) /* we donot want to complete on all atoms */
return FALSE;
while(start > 0 && (_istalnum((c=ln->data[start-1])) || c == '_') )
start--;
if ( start > 0 )
{ _TINT cs = ln->data[start-1];
if ( _tcschr(_T("'/\\.~"), cs) )
return FALSE; /* treat as a filename */
}
if ( _istlower(ln->data[start]) ) /* Lower, Aplha ...: an atom */
{ size_t patlen = ln->point - start;
_tcsncpy(data->buf_handle, &ln->data[start], patlen);
data->buf_handle[patlen] = '\0';
if ( PL_atom_generator_w(data->buf_handle,
data->candidate,
sizeof(data->candidate)/sizeof(TCHAR),
FALSE) )
{ data->replace_from = (int)start;
data->function = prolog_complete;
return TRUE;
}
}
return FALSE;
}
case COMPLETE_ENUMERATE:
{ if ( PL_atom_generator_w(data->buf_handle,
data->candidate,
sizeof(data->candidate)/sizeof(TCHAR),
TRUE) )
return TRUE;
return FALSE;
}
case COMPLETE_CLOSE:
return TRUE;
default:
return FALSE;
}
}
static int
do_complete(RlcCompleteData data)
{ if ( prolog_complete(data) )
return TRUE;
if ( file_completer )
return (*file_completer)(data);
return FALSE;
}
/*******************************
* CONSOLE STUFF *
*******************************/
rlc_console
PL_current_console()
{ if ( Suser_input->functions->read == Srlc_read )
return Suser_input->handle;
return NULL;
}
foreign_t
pl_window_title(term_t old, term_t new)
{ TCHAR buf[256];
TCHAR *n;
if ( !PL_get_wchars(new, NULL, &n, CVT_ALL) )
return type_error(new, "atom");
rlc_title(PL_current_console(), n, buf, sizeof(buf)/sizeof(TCHAR));
return PL_unify_wchars(old, PL_ATOM, _tcslen(buf), buf);
}
static int
type_error(term_t actual, const char *expected)
{ term_t ex = PL_new_term_ref();
PL_unify_term(ex, PL_FUNCTOR_CHARS, "error", 2,
PL_FUNCTOR_CHARS, "type_error", 2,
PL_CHARS, expected,
PL_TERM, actual,
PL_VARIABLE);
return PL_raise_exception(ex);
}
static int
domain_error(term_t actual, const char *expected)
{ term_t ex = PL_new_term_ref();
PL_unify_term(ex, PL_FUNCTOR_CHARS, "error", 2,
PL_FUNCTOR_CHARS, "domain_error", 2,
PL_CHARS, expected,
PL_TERM, actual,
PL_VARIABLE);
return PL_raise_exception(ex);
}
static int
get_chars_arg_ex(int a, term_t t, TCHAR **v)
{ term_t arg = PL_new_term_ref();
if ( PL_get_arg(a, t, arg) &&
PL_get_wchars(arg, NULL, v, CVT_ALL|BUF_RING) )
return TRUE;
return type_error(arg, "text");
}
static int
get_int_arg_ex(int a, term_t t, int *v)
{ term_t arg = PL_new_term_ref();
PL_get_arg(a, t, arg);
if ( PL_get_integer(arg, v) )
return TRUE;
return type_error(arg, "integer");
}
static int
get_bool_arg_ex(int a, term_t t, int *v)
{ term_t arg = PL_new_term_ref();
PL_get_arg(a, t, arg);
if ( PL_get_bool(arg, v) )
return TRUE;
return type_error(arg, "boolean");
}
foreign_t
pl_window_pos(term_t options)
{ int x = 0, y = 0, w = 0, h = 0;
HWND z = HWND_TOP;
UINT flags = SWP_NOACTIVATE|SWP_NOZORDER|SWP_NOSIZE|SWP_NOMOVE;
term_t opt = PL_new_term_ref();
term_t tail = PL_copy_term_ref(options);
while(PL_get_list(tail, opt, tail))
{ atom_t name;
const char *s;
int arity;
if ( !PL_get_name_arity(opt, &name, &arity) )
return type_error(opt, "compound");
s = PL_atom_chars(name);
if ( streq(s, "position") && arity == 2 )
{ if ( !get_int_arg_ex(1, opt, &x) ||
!get_int_arg_ex(2, opt, &y) )
return FALSE;
flags &= ~SWP_NOMOVE;
} else if ( streq(s, "size") && arity == 2 )
{ if ( !get_int_arg_ex(1, opt, &w) ||
!get_int_arg_ex(2, opt, &h) )
return FALSE;
flags &= ~SWP_NOSIZE;
} else if ( streq(s, "zorder") && arity == 1 )
{ term_t t = PL_new_term_ref();
char *v;
PL_get_arg(1, opt, t);
if ( !PL_get_atom_chars(t, &v) )
return type_error(t, "atom");
if ( streq(v, "top") )
z = HWND_TOP;
else if ( streq(v, "bottom") )
z = HWND_BOTTOM;
else if ( streq(v, "topmost") )
z = HWND_TOPMOST;
else if ( streq(v, "notopmost") )
z = HWND_NOTOPMOST;
else
return domain_error(t, "hwnd_insert_after");
flags &= ~SWP_NOZORDER;
} else if ( streq(s, "show") && arity == 1 )
{ int v;
if ( !get_bool_arg_ex(1, opt, &v) )
return FALSE;
flags &= ~(SWP_SHOWWINDOW|SWP_HIDEWINDOW);
if ( v )
flags |= SWP_SHOWWINDOW;
else
flags |= SWP_HIDEWINDOW;
} else if ( streq(s, "activate") && arity == 0 )
{ flags &= ~SWP_NOACTIVATE;
} else
return domain_error(opt, "window_option");
}
if ( !PL_get_nil(tail) )
return type_error(tail, "list");
rlc_window_pos(PL_current_console(), z, x, y, w, h, flags);
return TRUE;
}
static void
call_menu(const TCHAR *name)
{ fid_t fid = PL_open_foreign_frame();
predicate_t pred = PL_predicate("on_menu", 1, "prolog");
module_t m = PL_new_module(PL_new_atom("prolog"));
term_t a0 = PL_new_term_ref();
size_t len = _tcslen(name);
PL_unify_wchars(a0, PL_ATOM, len, name);
PL_call_predicate(m, PL_Q_NORMAL, pred, a0);
PL_discard_foreign_frame(fid);
}
foreign_t
pl_win_insert_menu_item(foreign_t menu, foreign_t label, foreign_t before)
{ TCHAR *m, *l, *b;
if ( !PL_get_wchars(menu, NULL, &m, CVT_ATOM) ||
!PL_get_wchars(label, NULL, &l, CVT_ATOM) ||
!PL_get_wchars(before, NULL, &b, CVT_ATOM) )
return FALSE;
if ( _tcscmp(b, _T("-")) == 0 )
b = NULL;
if ( _tcscmp(l, _T("--")) == 0 )
l = NULL; /* insert a separator */
return rlc_insert_menu_item(PL_current_console(), m, l, b);
}
foreign_t
pl_win_insert_menu(foreign_t label, foreign_t before)
{ TCHAR *l, *b;
if ( !PL_get_wchars(label, NULL, &l, CVT_ATOM) ||
!PL_get_wchars(before, NULL, &b, CVT_ATOM) )
return FALSE;
if ( _tcscmp(b, _T("-")) == 0 )
b = NULL;
return rlc_insert_menu(PL_current_console(), l, b);
}
/*******************************
* THREADS *
*******************************/
#ifdef O_PLMT
static void
free_interactor(void *closure)
{ PL_thread_destroy_engine();
}
static void *
run_interactor(void *closure)
{ predicate_t pred;
PL_thread_attach_engine(NULL);
pthread_cleanup_push(free_interactor, NULL);
pred = PL_predicate("thread_run_interactor", 0, "user");
PL_call_predicate(NULL, PL_Q_NORMAL, pred, 0);
pthread_cleanup_pop(1);
return NULL;
}
static void
create_interactor()
{ pthread_attr_t attr;
pthread_t child;
pthread_attr_init(&attr);
pthread_create(&child, &attr, run_interactor, NULL);
}
#endif /*O_PLMT*/
/*******************************
* SIGNALS *
*******************************/
#define WM_SIGNALLED (WM_USER+1)
#define WM_MENU (WM_USER+2)
static LRESULT WINAPI
pl_wnd_proc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{ switch(message)
{ case WM_SIGNALLED:
PL_handle_signals();
return 0;
case WM_MENU:
{ const TCHAR *name = (const TCHAR *)lParam;
call_menu(name);
return 0;
}
}
return DefWindowProc(hwnd, message, wParam, lParam);
}
static TCHAR *
HiddenFrameClass()
{ static TCHAR winclassname[32];
static WNDCLASS wndClass;
HINSTANCE instance = rlc_hinstance();
if ( !winclassname[0] )
{ _stprintf(winclassname, _T("YAP-hidden-win%d"), instance);
wndClass.style = 0;
wndClass.lpfnWndProc = (LPVOID) pl_wnd_proc;
wndClass.cbClsExtra = 0;
wndClass.cbWndExtra = 0;
wndClass.hInstance = instance;
wndClass.hIcon = NULL;
wndClass.hCursor = NULL;
// wndClass.hbrBackground = GetStockObject(WHITE_BRUSH);
wndClass.lpszMenuName = NULL;
wndClass.lpszClassName = winclassname;
RegisterClass(&wndClass);
}
return winclassname;
}
static void
destroy_hidden_window(uintptr_t hwnd)
{ DestroyWindow((HWND)hwnd);
}
static HWND
create_prolog_hidden_window(rlc_console c)
{ uintptr_t hwnd;
if ( rlc_get(c, RLC_PROLOG_WINDOW, &hwnd) && hwnd )
return (HWND)hwnd;
hwnd = (uintptr_t)CreateWindow(HiddenFrameClass(),
_T("YAP hidden window"),
0,
0, 0, 32, 32,
NULL, NULL, rlc_hinstance(), NULL);
rlc_set(c, RLC_PROLOG_WINDOW, hwnd, destroy_hidden_window);
return (HWND)hwnd;
}
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Capturing fatal signals doesn't appear to work inside a DLL, hence we
capture them in the application and tell Prolog to print the stack and
abort.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
static void
fatalSignal(int sig)
{ char *name;
switch(sig)
{ case SIGABRT: name = "abort"; break;
case SIGFPE: name = "floating point exeception"; break;
case SIGILL: name = "illegal instruction"; break;
case SIGSEGV: name = "general protection fault"; break;
default: name = "(unknown)"; break;
}
PL_warning("Trapped signal %d (%s), aborting ...", sig, name);
PL_action(PL_ACTION_BACKTRACE, (void *)10);
signal(sig, fatalSignal);
PL_action(PL_ACTION_ABORT, NULL);
}
static void
initSignals()
{ signal(SIGABRT, fatalSignal);
signal(SIGFPE, fatalSignal);
signal(SIGILL, fatalSignal);
signal(SIGSEGV, fatalSignal);
}
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Callbacks from the console. Trouble is that these routines are called in
the thread updating the console rather than the thread running Prolog.
We can inform Prolog using the hidden window which is in Prolog's
thread. For the interrupt to work if Prolog is working we need to set
the signalled mask in the proper thread. This is accomplished using
PL_w32thread_raise(ID, sig). In the single-threaded version this call
simply calls PL_raise(sig).
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
static void
interrupt(rlc_console c, int sig)
{ uintptr_t val;
if ( rlc_get(c, RLC_APPLICATION_THREAD_ID, &val) )
{ DWORD tid = (DWORD)val;
PL_w32thread_raise(tid, sig);
if ( rlc_get(c, RLC_PROLOG_WINDOW, &val) )
{ HWND hwnd = (HWND)val;
PostMessage((HWND)hwnd, WM_SIGNALLED, 0, 0);
}
}
}
static void
menu_select(rlc_console c, const TCHAR *name)
{
#ifdef O_PLMT
if ( _tcscmp(name, _T("&New thread")) == 0 )
{ create_interactor();
} else
#endif /*O_PLMT*/
{ uintptr_t hwnd;
if ( rlc_get(c, RLC_PROLOG_WINDOW, &hwnd) )
PostMessage((HWND)hwnd, WM_MENU, 0, (LONG)name);
}
}
static LRESULT
message_proc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{ switch( PL_win_message_proc(hwnd, message, wParam, lParam) )
{ case PL_MSG_HANDLED:
return TRUE;
default:
return FALSE;
}
}
/*******************************
* MAIN *
*******************************/
static void
set_window_title(rlc_console c)
{ TCHAR title[256];
int v = (int)PL_query(PL_QUERY_VERSION);
int major = v / 10000;
int minor = (v / 100) % 100;
int patch = v % 100;
#ifdef O_PLMT
TCHAR *mt = _T("Multi-threaded, ");
#else
TCHAR *mt = _T("");
#endif
#ifdef WIN64
TCHAR *w64 = _T("AMD64, "); /* TBD: IA64 */
#else
TCHAR *w64 = _T("");
#endif
_stprintf(title, _T("YAP (%s%sversion %d.%d.%d)"),
w64, mt, major, minor, patch);
rlc_title(c, title, NULL, 0);
}
PL_extension extensions[] =
{
/*{ "name", arity, function, PL_FA_<flags> },*/
{ "window_title", 2, pl_window_title, 0 },
{ "$win_insert_menu_item", 3, pl_win_insert_menu_item, 0 },
{ "win_insert_menu", 2, pl_win_insert_menu, 0 },
{ "win_window_pos", 1, pl_window_pos, 0 },
{ NULL, 0, NULL, 0 }
};
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
win32main() is called back from the plterm.dll main loop to provide the
main for the application.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
static void
install_readline(rlc_console c)
{ rlc_init_history(c, 50);
file_completer = rlc_complete_hook(do_complete);
PL_register_foreign_in_module("system", "rl_add_history", 1, pl_rl_add_history, 0);
PL_register_foreign_in_module("system", "rl_read_init_file", 1, pl_rl_read_init_file, 0);
PL_set_prolog_flag("tty_control", PL_BOOL, TRUE);
PL_set_prolog_flag("readline", PL_BOOL, TRUE);
}
/* destroy the console on exit. Using PL_on_halt() is the clean, but somewhat
uncertain way. using atexit() is more reliable, but we must be sure we don't
do it twice.
*/
static rlc_console main_console;
static void
closeWin(int s, void *a)
{ rlc_console c = a;
// closeConsoles();
if ( c == main_console )
{ main_console = NULL;
rlc_close(c);
}
}
#define MAX_ARGC 100
static size_t
utf8_required_len(const wchar_t *s)
{ size_t l = 0;
char tmp[6];
char *q;
for( ; *s; s++)
{ q = utf8_put_char(tmp, *s);
l += q-tmp;
}
return l;
}
int
win32main(rlc_console c, int argc, TCHAR **argv)
{ char *av[MAX_ARGC+1];
int i;
set_window_title(c);
rlc_bind_terminal(c);
if ( !PL_initialise(argc, av) )
PL_halt(1);
PL_register_extensions_in_module("system", extensions);
install_readline(c);
PL_action(PL_ACTION_GUIAPP, TRUE);
main_console = c;
PL_on_halt(closeWin, c);
create_prolog_hidden_window(c);
PL_set_prolog_flag("hwnd", PL_INTEGER, (intptr_t)rlc_hwnd(c));
rlc_interrupt_hook(interrupt);
rlc_menu_hook(menu_select);
rlc_message_hook(message_proc);
PL_set_prolog_flag("console_menu", PL_BOOL, TRUE);
#ifdef O_PLMT
rlc_insert_menu_item(c, _T("&Run"), _T("&New thread"), NULL);
#endif
#if !defined(O_DEBUG) && !defined(_DEBUG)
initSignals();
#endif
PL_register_foreign_in_module("system", "win_open_console", 5,
pl_win_open_console, 0);
if ( argc > MAX_ARGC )
argc = MAX_ARGC;
for(i=0; i<argc; i++)
{ char *s;
TCHAR *q;
av[i] = alloca(utf8_required_len(argv[i])+1);
for(s=av[i], q=argv[i]; *q; q++)
{ s = utf8_put_char(s, *q);
}
*s = '\0';
}
av[i] = NULL;
rlc_bind_terminal(c);
PL_halt(PL_toplevel() ? 0 : 1);
return 0;
}
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
And this is the real application's main as Windows sees it. See
console.c for further details.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
int WINAPI
wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPWSTR lpszCmdLine, int nCmdShow)
{ LPWSTR cmdline;
InitializeCriticalSection(&mutex);
cmdline = GetCommandLine();
return rlc_main(hInstance, hPrevInstance, cmdline, nCmdShow,
win32main, LoadIcon(hInstance, _T("SWI_Icon")));
}
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