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-rw-r--r--win/tclWinPipe.c82
1 files changed, 5 insertions, 77 deletions
diff --git a/win/tclWinPipe.c b/win/tclWinPipe.c
index 7c19e38..4debaa4 100644
--- a/win/tclWinPipe.c
+++ b/win/tclWinPipe.c
@@ -9,7 +9,7 @@
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tclWinPipe.c,v 1.79 2010/04/22 11:40:32 nijtmans Exp $
+ * RCS: @(#) $Id: tclWinPipe.c,v 1.80 2010/08/04 21:37:19 hobbs Exp $
*/
#include "tclWinInt.h"
@@ -1142,82 +1142,10 @@ TclpCreateProcess(
}
if (applType == APPL_DOS) {
- /*
- * Under Windows 95, 16-bit DOS applications do not work well with
- * pipes:
- *
- * 1. EOF on a pipe between a detached 16-bit DOS application and
- * another application is not seen at the other end of the pipe,
- * so the listening process blocks forever on reads. This inablity
- * to detect EOF happens when either a 16-bit app or the 32-bit
- * app is the listener.
- *
- * 2. If a 16-bit DOS application (detached or not) blocks when
- * writing to a pipe, it will never wake up again, and it
- * eventually brings the whole system down around it.
- *
- * The 16-bit application is run as a normal process inside of a
- * hidden helper console app, and this helper may be run as a
- * detached process. If any of the stdio handles is a pipe, the
- * helper application accumulates information into temp files and
- * forwards it to or from the DOS application as appropriate.
- * This means that DOS apps must receive EOF from a stdin pipe
- * before they will actually begin, and must finish generating
- * stdout or stderr before the data will be sent to the next stage
- * of the pipe.
- *
- * The helper app should be located in the same directory as the
- * tcl dll.
- */
- Tcl_Obj *tclExePtr, *pipeDllPtr;
- const char *start, *end;
- int i, fileExists;
- Tcl_DString pipeDll;
-
- if (createFlags != 0) {
- startInfo.wShowWindow = SW_HIDE;
- startInfo.dwFlags |= STARTF_USESHOWWINDOW;
- createFlags = CREATE_NEW_CONSOLE;
- }
-
- Tcl_DStringInit(&pipeDll);
- Tcl_DStringAppend(&pipeDll, TCL_PIPE_DLL, -1);
- tclExePtr = TclGetObjNameOfExecutable();
- Tcl_IncrRefCount(tclExePtr);
- start = Tcl_GetStringFromObj(tclExePtr, &i);
- for (end = start + (i-1); end > start; end--) {
- if (*end == '/') {
- break;
- }
- }
- if (*end != '/') {
- Tcl_AppendResult(interp, "no / in executable path name \"",
- start, "\"", (char *) NULL);
- Tcl_DecrRefCount(tclExePtr);
- Tcl_DStringFree(&pipeDll);
- goto end;
- }
- i = (end - start) + 1;
- pipeDllPtr = Tcl_NewStringObj(start, i);
- Tcl_AppendToObj(pipeDllPtr, Tcl_DStringValue(&pipeDll), -1);
- Tcl_IncrRefCount(pipeDllPtr);
- if (Tcl_FSConvertToPathType(interp, pipeDllPtr) != TCL_OK) {
- Tcl_Panic("Tcl_FSConvertToPathType failed");
- }
- fileExists = (Tcl_FSAccess(pipeDllPtr, F_OK) == 0);
- if (!fileExists) {
- Tcl_AppendResult(interp, "Tcl pipe dll \"",
- Tcl_DStringValue(&pipeDll), "\" not found",
- (char *) NULL);
- Tcl_DecrRefCount(tclExePtr);
- Tcl_DecrRefCount(pipeDllPtr);
- Tcl_DStringFree(&pipeDll);
- goto end;
- }
- Tcl_DStringAppend(&cmdLine, Tcl_DStringValue(&pipeDll), -1);
- Tcl_DecrRefCount(tclExePtr);
- Tcl_DecrRefCount(pipeDllPtr);
- Tcl_DStringFree(&pipeDll);
+ Tcl_AppendResult(interp,
+ "DOS application process not supported on this platform",
+ (char *) NULL);
+ goto end;
}
}