/* Process support for GNU Emacs on the Microsoft W32 API.
- Copyright (C) 1992, 1995 Free Software Foundation, Inc.
+ Copyright (C) 1992, 1995, 1999 Free Software Foundation, Inc.
This file is part of GNU Emacs.
#undef kill
#include <windows.h>
+#ifdef __GNUC__
+/* This definition is missing from mingw32 headers. */
+extern BOOL WINAPI IsValidLocale(LCID, DWORD);
+#endif
#include "lisp.h"
#include "w32.h"
consoles also allows Emacs to cleanly terminate process groups. */
Lisp_Object Vw32_start_process_share_console;
+/* Control whether create_child cause the process to inherit Emacs'
+ error mode setting. The default is t, to minimize the possibility of
+ subprocesses blocking when accessing unmounted drives. */
+Lisp_Object Vw32_start_process_inherit_error_mode;
+
/* Time to sleep before reading from a subprocess output pipe - this
avoids the inefficiency of frequently reading small amounts of data.
This is primarily necessary for handling DOS processes on Windows 95,
Lisp_Object Qhigh, Qlow;
-#ifndef SYS_SIGLIST_DECLARED
-extern char *sys_siglist[];
-#endif
-
#ifdef EMACSDEBUG
void _DebPrint (const char *fmt, ...)
{
{
STARTUPINFO start;
SECURITY_ATTRIBUTES sec_attrs;
+#if 0
SECURITY_DESCRIPTOR sec_desc;
+#endif
+ DWORD flags;
char dir[ MAXPATHLEN ];
if (cp == NULL) abort ();
start.hStdError = GetStdHandle (STD_ERROR_HANDLE);
#endif /* HAVE_NTGUI */
+#if 0
/* Explicitly specify no security */
if (!InitializeSecurityDescriptor (&sec_desc, SECURITY_DESCRIPTOR_REVISION))
goto EH_Fail;
if (!SetSecurityDescriptorDacl (&sec_desc, TRUE, NULL, FALSE))
goto EH_Fail;
+#endif
sec_attrs.nLength = sizeof (sec_attrs);
- sec_attrs.lpSecurityDescriptor = &sec_desc;
+ sec_attrs.lpSecurityDescriptor = NULL /* &sec_desc */;
sec_attrs.bInheritHandle = FALSE;
strcpy (dir, process_dir);
unixtodos_filename (dir);
-
+
+ flags = (!NILP (Vw32_start_process_share_console)
+ ? CREATE_NEW_PROCESS_GROUP
+ : CREATE_NEW_CONSOLE);
+ if (NILP (Vw32_start_process_inherit_error_mode))
+ flags |= CREATE_DEFAULT_ERROR_MODE;
if (!CreateProcess (exe, cmdline, &sec_attrs, NULL, TRUE,
- (!NILP (Vw32_start_process_share_console)
- ? CREATE_NEW_PROCESS_GROUP
- : CREATE_NEW_CONSOLE),
- env, dir,
- &start, &cp->procinfo))
+ flags, env, dir, &start, &cp->procinfo))
goto EH_Fail;
cp->pid = (int) cp->procinfo.dwProcessId;
else if (WIFSIGNALED (retval))
{
int code = WTERMSIG (retval);
- char *signame = 0;
-
- if (code < NSIG)
- {
- /* Suppress warning if the table has const char *. */
- signame = (char *) sys_siglist[code];
- }
+ char *signame;
+
+ synchronize_system_messages_locale ();
+ signame = strsignal (code);
+
if (signame == 0)
signame = "unknown";
{
char * dllname = RVA_TO_PTR (imports->Name, section, executable);
- if (strcmp (dllname, "cygwin.dll") == 0)
+ /* The exact name of the cygwin dll has changed with
+ various releases, but hopefully this will be reasonably
+ future proof. */
+ if (strncmp (dllname, "cygwin", 6) == 0)
{
*is_cygnus_app = TRUE;
break;
}
int
-compare_env (const char **strp1, const char **strp2)
+compare_env (const void *strp1, const void *strp2)
{
- const char *str1 = *strp1, *str2 = *strp2;
+ const char *str1 = *(const char **)strp1, *str2 = *(const char **)strp2;
while (*str1 && *str2 && *str1 != '=' && *str2 != '=')
{
- if (tolower (*str1) > tolower (*str2))
+ /* Sort order in command.com/cmd.exe is based on uppercasing
+ names, so do the same here. */
+ if (toupper (*str1) > toupper (*str2))
return 1;
- else if (tolower (*str1) < tolower (*str2))
+ else if (toupper (*str1) < toupper (*str2))
return -1;
str1++, str2++;
}
numenv++;
}
/* extra env vars... */
- sprintf (ppid_env_var_buffer, "__PARENT_PROCESS_ID=%d",
+ sprintf (ppid_env_var_buffer, "EM_PARENT_PROCESS_ID=%d",
GetCurrentProcessId ());
arglen += strlen (ppid_env_var_buffer) + 1;
numenv++;
return 0;
}
- /* Wait for input or child death to be signalled. */
start_time = GetTickCount ();
- active = WaitForMultipleObjects (nh + nc, wait_hnd, FALSE, timeout_ms);
+
+ /* Wait for input or child death to be signalled. If user input is
+ allowed, then also accept window messages. */
+ if (FD_ISSET (0, &orfds))
+ active = MsgWaitForMultipleObjects (nh + nc, wait_hnd, FALSE, timeout_ms,
+ QS_ALLINPUT);
+ else
+ active = WaitForMultipleObjects (nh + nc, wait_hnd, FALSE, timeout_ms);
if (active == WAIT_FAILED)
{
processed - otherwise higher numbered channels could be starved. */
do
{
- if (active >= nh)
+ if (active == nh + nc)
+ {
+ /* There are messages in the lisp thread's queue; we must
+ drain the queue now to ensure they are processed promptly,
+ because if we don't do so, we will not be woken again until
+ further messages arrive.
+
+ NB. If ever we allow window message procedures to callback
+ into lisp, we will need to ensure messages are dispatched
+ at a safe time for lisp code to be run (*), and we may also
+ want to provide some hooks in the dispatch loop to cater
+ for modeless dialogs created by lisp (ie. to register
+ window handles to pass to IsDialogMessage).
+
+ (*) Note that MsgWaitForMultipleObjects above is an
+ internal dispatch point for messages that are sent to
+ windows created by this thread. */
+ drain_message_queue ();
+ }
+ else if (active >= nh)
{
cp = cps[active - nh];
/* Substitute for certain kill () operations */
static BOOL CALLBACK
-find_child_console (HWND hwnd, child_process * cp)
+find_child_console (HWND hwnd, LPARAM arg)
{
+ child_process * cp = (child_process *) arg;
DWORD thread_id;
DWORD process_id;
}
foreground_window = GetForegroundWindow ();
- if (foreground_window && SetForegroundWindow (cp->hwnd))
+ if (foreground_window)
{
- /* Generate keystrokes as if user had typed Ctrl-Break or Ctrl-C. */
- keybd_event (VK_CONTROL, control_scan_code, 0, 0);
- keybd_event (vk_break_code, break_scan_code, 0, 0);
- keybd_event (vk_break_code, break_scan_code, KEYEVENTF_KEYUP, 0);
- keybd_event (VK_CONTROL, control_scan_code, KEYEVENTF_KEYUP, 0);
-
- /* Sleep for a bit to give time for Emacs frame to respond
- to focus change events (if Emacs was active app). */
- Sleep (10);
-
- SetForegroundWindow (foreground_window);
- }
- }
+ /* NT 5.0, and apparently also Windows 98, will not allow
+ a Window to be set to foreground directly without the
+ user's involvement. The workaround is to attach
+ ourselves to the thread that owns the foreground
+ window, since that is the only thread that can set the
+ foreground window. */
+ DWORD foreground_thread, child_thread;
+ foreground_thread =
+ GetWindowThreadProcessId (foreground_window, NULL);
+ if (foreground_thread == GetCurrentThreadId ()
+ || !AttachThreadInput (GetCurrentThreadId (),
+ foreground_thread, TRUE))
+ foreground_thread = 0;
+
+ child_thread = GetWindowThreadProcessId (cp->hwnd, NULL);
+ if (child_thread == GetCurrentThreadId ()
+ || !AttachThreadInput (GetCurrentThreadId (),
+ child_thread, TRUE))
+ child_thread = 0;
+
+ /* Set the foreground window to the child. */
+ if (SetForegroundWindow (cp->hwnd))
+ {
+ /* Generate keystrokes as if user had typed Ctrl-Break or
+ Ctrl-C. */
+ keybd_event (VK_CONTROL, control_scan_code, 0, 0);
+ keybd_event (vk_break_code, break_scan_code,
+ (vk_break_code == 'C' ? 0 : KEYEVENTF_EXTENDEDKEY), 0);
+ keybd_event (vk_break_code, break_scan_code,
+ (vk_break_code == 'C' ? 0 : KEYEVENTF_EXTENDEDKEY)
+ | KEYEVENTF_KEYUP, 0);
+ keybd_event (VK_CONTROL, control_scan_code,
+ KEYEVENTF_KEYUP, 0);
+
+ /* Sleep for a bit to give time for Emacs frame to respond
+ to focus change events (if Emacs was active app). */
+ Sleep (100);
+
+ SetForegroundWindow (foreground_window);
+ }
+ /* Detach from the foreground and child threads now that
+ the foreground switching is over. */
+ if (foreground_thread)
+ AttachThreadInput (GetCurrentThreadId (),
+ foreground_thread, FALSE);
+ if (child_thread)
+ AttachThreadInput (GetCurrentThreadId (),
+ child_thread, FALSE);
+ }
+ }
/* Ctrl-Break is NT equivalent of SIGINT. */
else if (!GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, pid))
{
as the third letter. For example, ENU refers to `English (United States)',\n\
while ENC means `English (Canadian)'.\n\
\n\
-If the optional argument LONGFORM is non-nil, the long form of the locale\n\
-name is returned, e.g. `English (United States)' instead.\n\
+If the optional argument LONGFORM is t, the long form of the locale\n\
+name is returned, e.g. `English (United States)' instead; if LONGFORM\n\
+is a number, it is interpreted as an LCTYPE constant and the corresponding\n\
+locale information is returned.\n\
\n\
If LCID (a 16-bit number) is not a valid locale, the result is nil.")
(lcid, longform)
if (got_abbrev)
return build_string (abbrev_name);
}
- else
+ else if (EQ (longform, Qt))
{
got_full = GetLocaleInfo (XINT (lcid),
LOCALE_SLANGUAGE | LOCALE_USE_CP_ACP,
if (got_full)
return build_string (full_name);
}
+ else if (NUMBERP (longform))
+ {
+ got_full = GetLocaleInfo (XINT (lcid),
+ XINT (longform),
+ full_name, sizeof (full_name));
+ if (got_full)
+ return make_unibyte_string (full_name, got_full);
+ }
return Qnil;
}
return make_number (GetThreadLocale ());
}
+
+/* We need to build a global list, since the EnumCodePages callback
+ function isn't given a context pointer. */
+Lisp_Object Vw32_valid_codepages;
+
+BOOL CALLBACK enum_codepage_fn (LPTSTR codepageNum)
+{
+ DWORD id = atoi (codepageNum);
+ Vw32_valid_codepages = Fcons (make_number (id), Vw32_valid_codepages);
+ return TRUE;
+}
+
+DEFUN ("w32-get-valid-codepages", Fw32_get_valid_codepages, Sw32_get_valid_codepages, 0, 0, 0,
+ "Return list of all valid Windows codepages.")
+ ()
+{
+ Vw32_valid_codepages = Qnil;
+
+ EnumSystemCodePages (enum_codepage_fn, CP_SUPPORTED);
+
+ Vw32_valid_codepages = Fnreverse (Vw32_valid_codepages);
+ return Vw32_valid_codepages;
+}
+
+
+DEFUN ("w32-get-console-codepage", Fw32_get_console_codepage, Sw32_get_console_codepage, 0, 0, 0,
+ "Return current Windows codepage for console input.")
+ ()
+{
+ return make_number (GetConsoleCP ());
+}
+
+
+DEFUN ("w32-set-console-codepage", Fw32_set_console_codepage, Sw32_set_console_codepage, 1, 1, 0,
+ "Make Windows codepage CP be the current codepage setting for Emacs.\n\
+The codepage setting affects keyboard input and display in tty mode.\n\
+If successful, the new CP is returned, otherwise nil.")
+ (cp)
+ Lisp_Object cp;
+{
+ CHECK_NUMBER (cp, 0);
+
+ if (!IsValidCodePage (XINT (cp)))
+ return Qnil;
+
+ if (!SetConsoleCP (XINT (cp)))
+ return Qnil;
+
+ return make_number (GetConsoleCP ());
+}
+
+
+DEFUN ("w32-get-console-output-codepage", Fw32_get_console_output_codepage, Sw32_get_console_output_codepage, 0, 0, 0,
+ "Return current Windows codepage for console output.")
+ ()
+{
+ return make_number (GetConsoleOutputCP ());
+}
+
+
+DEFUN ("w32-set-console-output-codepage", Fw32_set_console_output_codepage, Sw32_set_console_output_codepage, 1, 1, 0,
+ "Make Windows codepage CP be the current codepage setting for Emacs.\n\
+The codepage setting affects keyboard input and display in tty mode.\n\
+If successful, the new CP is returned, otherwise nil.")
+ (cp)
+ Lisp_Object cp;
+{
+ CHECK_NUMBER (cp, 0);
+
+ if (!IsValidCodePage (XINT (cp)))
+ return Qnil;
+
+ if (!SetConsoleOutputCP (XINT (cp)))
+ return Qnil;
+
+ return make_number (GetConsoleOutputCP ());
+}
+
+
+DEFUN ("w32-get-codepage-charset", Fw32_get_codepage_charset, Sw32_get_codepage_charset, 1, 1, 0,
+ "Return charset of codepage CP.\n\
+Returns nil if the codepage is not valid.")
+ (cp)
+ Lisp_Object cp;
+{
+ CHARSETINFO info;
+
+ CHECK_NUMBER (cp, 0);
+
+ if (!IsValidCodePage (XINT (cp)))
+ return Qnil;
+
+ if (TranslateCharsetInfo ((DWORD *) XINT (cp), &info, TCI_SRCCODEPAGE))
+ return make_number (info.ciCharset);
+
+ return Qnil;
+}
+
+
+DEFUN ("w32-get-valid-keyboard-layouts", Fw32_get_valid_keyboard_layouts, Sw32_get_valid_keyboard_layouts, 0, 0, 0,
+ "Return list of Windows keyboard languages and layouts.\n\
+The return value is a list of pairs of language id and layout id.")
+ ()
+{
+ int num_layouts = GetKeyboardLayoutList (0, NULL);
+ HKL * layouts = (HKL *) alloca (num_layouts * sizeof (HKL));
+ Lisp_Object obj = Qnil;
+
+ if (GetKeyboardLayoutList (num_layouts, layouts) == num_layouts)
+ {
+ while (--num_layouts >= 0)
+ {
+ DWORD kl = (DWORD) layouts[num_layouts];
+
+ obj = Fcons (Fcons (make_number (kl & 0xffff),
+ make_number ((kl >> 16) & 0xffff)),
+ obj);
+ }
+ }
+
+ return obj;
+}
+
+
+DEFUN ("w32-get-keyboard-layout", Fw32_get_keyboard_layout, Sw32_get_keyboard_layout, 0, 0, 0,
+ "Return current Windows keyboard language and layout.\n\
+The return value is the cons of the language id and the layout id.")
+ ()
+{
+ DWORD kl = (DWORD) GetKeyboardLayout (dwWindowsThreadId);
+
+ return Fcons (make_number (kl & 0xffff),
+ make_number ((kl >> 16) & 0xffff));
+}
+
+
+DEFUN ("w32-set-keyboard-layout", Fw32_set_keyboard_layout, Sw32_set_keyboard_layout, 1, 1, 0,
+ "Make LAYOUT be the current keyboard layout for Emacs.\n\
+The keyboard layout setting affects interpretation of keyboard input.\n\
+If successful, the new layout id is returned, otherwise nil.")
+ (layout)
+ Lisp_Object layout;
+{
+ DWORD kl;
+
+ CHECK_CONS (layout, 0);
+ CHECK_NUMBER (XCAR (layout), 0);
+ CHECK_NUMBER (XCDR (layout), 0);
+
+ kl = (XINT (XCAR (layout)) & 0xffff)
+ | (XINT (XCDR (layout)) << 16);
+
+ /* Synchronize layout with input thread. */
+ if (dwWindowsThreadId)
+ {
+ if (PostThreadMessage (dwWindowsThreadId, WM_EMACS_SETKEYBOARDLAYOUT,
+ (WPARAM) kl, 0))
+ {
+ MSG msg;
+ GetMessage (&msg, NULL, WM_EMACS_DONE, WM_EMACS_DONE);
+
+ if (msg.wParam == 0)
+ return Qnil;
+ }
+ }
+ else if (!ActivateKeyboardLayout ((HKL) kl, 0))
+ return Qnil;
+
+ return Fw32_get_keyboard_layout ();
+}
+
\f
syms_of_ntproc ()
{
defsubr (&Sw32_get_valid_locale_ids);
defsubr (&Sw32_set_current_locale);
+ defsubr (&Sw32_get_console_codepage);
+ defsubr (&Sw32_set_console_codepage);
+ defsubr (&Sw32_get_console_output_codepage);
+ defsubr (&Sw32_set_console_output_codepage);
+ defsubr (&Sw32_get_valid_codepages);
+ defsubr (&Sw32_get_codepage_charset);
+
+ defsubr (&Sw32_get_valid_keyboard_layouts);
+ defsubr (&Sw32_get_keyboard_layout);
+ defsubr (&Sw32_set_keyboard_layout);
+
DEFVAR_LISP ("w32-quote-process-args", &Vw32_quote_process_args,
"Non-nil enables quoting of process arguments to ensure correct parsing.\n\
Because Windows does not directly pass argv arrays to child processes,\n\
DEFVAR_LISP ("w32-start-process-show-window",
&Vw32_start_process_show_window,
- "When nil, processes started via start-process hide their windows.\n\
+ "When nil, new child processes hide their windows.\n\
When non-nil, they show their window in the method of their choice.");
Vw32_start_process_show_window = Qnil;
DEFVAR_LISP ("w32-start-process-share-console",
&Vw32_start_process_share_console,
- "When nil, processes started via start-process are given a new console.\n\
+ "When nil, new child processes are given a new console.\n\
When non-nil, they share the Emacs console; this has the limitation of\n\
allowing only only DOS subprocess to run at a time (whether started directly\n\
or indirectly by Emacs), and preventing Emacs from cleanly terminating the\n\
otherwise respond to interrupts from Emacs.");
Vw32_start_process_share_console = Qnil;
+ DEFVAR_LISP ("w32-start-process-inherit-error-mode",
+ &Vw32_start_process_inherit_error_mode,
+ "When nil, new child processes revert to the default error mode.\n\
+When non-nil, they inherit their error mode setting from Emacs, which stops\n\
+them blocking when trying to access unmounted drives etc.");
+ Vw32_start_process_inherit_error_mode = Qt;
+
DEFVAR_INT ("w32-pipe-read-delay", &Vw32_pipe_read_delay,
"Forced delay before reading subprocess output.\n\
This is done to improve the buffering of subprocess output, by\n\
HCoop / bpt / emacs.git / blobdiff