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-rw-r--r--win/tclWinChan.c942
1 files changed, 505 insertions, 437 deletions
diff --git a/win/tclWinChan.c b/win/tclWinChan.c
index 98de3b0..0f17834 100644
--- a/win/tclWinChan.c
+++ b/win/tclWinChan.c
@@ -1,13 +1,13 @@
-/*
+/*
* tclWinChan.c
*
- * Channel drivers for Windows channels based on files, command
- * pipes and TCP sockets.
+ * Channel drivers for Windows channels based on files, command pipes and
+ * TCP sockets.
*
* Copyright (c) 1995-1997 Sun Microsystems, Inc.
*
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
#include "tclWinInt.h"
@@ -39,8 +39,8 @@ typedef struct FileInfo {
int flags; /* State flags, see above for a list. */
HANDLE handle; /* Input/output file. */
struct FileInfo *nextPtr; /* Pointer to next registered file. */
- int dirty; /* Boolean flag. Set if the OS may have data
- * pending on the channel */
+ int dirty; /* Boolean flag. Set if the OS may have data
+ * pending on the channel. */
} FileInfo;
typedef struct ThreadSpecificData {
@@ -54,16 +54,16 @@ typedef struct ThreadSpecificData {
static Tcl_ThreadDataKey dataKey;
/*
- * The following structure is what is added to the Tcl event queue when
- * file events are generated.
+ * The following structure is what is added to the Tcl event queue when file
+ * events are generated.
*/
typedef struct FileEvent {
- Tcl_Event header; /* Information that is standard for
- * all events. */
- FileInfo *infoPtr; /* Pointer to file info structure. Note
- * that we still have to verify that the
- * file exists before dereferencing this
+ Tcl_Event header; /* Information that is standard for all
+ * events. */
+ FileInfo *infoPtr; /* Pointer to file info structure. Note that
+ * we still have to verify that the file
+ * exists before dereferencing this
* pointer. */
} FileEvent;
@@ -71,34 +71,30 @@ typedef struct FileEvent {
* Static routines for this file:
*/
-static int FileBlockProc _ANSI_ARGS_((ClientData instanceData,
- int mode));
-static void FileChannelExitHandler _ANSI_ARGS_((
- ClientData clientData));
-static void FileCheckProc _ANSI_ARGS_((ClientData clientData,
- int flags));
-static int FileCloseProc _ANSI_ARGS_((ClientData instanceData,
- Tcl_Interp *interp));
-static int FileEventProc _ANSI_ARGS_((Tcl_Event *evPtr,
- int flags));
-static int FileGetHandleProc _ANSI_ARGS_((ClientData instanceData,
- int direction, ClientData *handlePtr));
-static ThreadSpecificData *FileInit _ANSI_ARGS_((void));
-static int FileInputProc _ANSI_ARGS_((ClientData instanceData,
- char *buf, int toRead, int *errorCode));
-static int FileOutputProc _ANSI_ARGS_((ClientData instanceData,
- CONST char *buf, int toWrite, int *errorCode));
-static int FileSeekProc _ANSI_ARGS_((ClientData instanceData,
- long offset, int mode, int *errorCode));
-static Tcl_WideInt FileWideSeekProc _ANSI_ARGS_((ClientData instanceData,
- Tcl_WideInt offset, int mode, int *errorCode));
-static void FileSetupProc _ANSI_ARGS_((ClientData clientData,
- int flags));
-static void FileWatchProc _ANSI_ARGS_((ClientData instanceData,
- int mask));
-static void FileThreadActionProc _ANSI_ARGS_ ((
- ClientData instanceData, int action));
-static DWORD FileGetType _ANSI_ARGS_((HANDLE handle));
+static int FileBlockProc(ClientData instanceData, int mode);
+static void FileChannelExitHandler(ClientData clientData);
+static void FileCheckProc(ClientData clientData, int flags);
+static int FileCloseProc(ClientData instanceData,
+ Tcl_Interp *interp);
+static int FileEventProc(Tcl_Event *evPtr, int flags);
+static int FileGetHandleProc(ClientData instanceData,
+ int direction, ClientData *handlePtr);
+static ThreadSpecificData *FileInit(void);
+static int FileInputProc(ClientData instanceData, char *buf,
+ int toRead, int *errorCode);
+static int FileOutputProc(ClientData instanceData,
+ CONST char *buf, int toWrite, int *errorCode);
+static int FileSeekProc(ClientData instanceData, long offset,
+ int mode, int *errorCode);
+static Tcl_WideInt FileWideSeekProc(ClientData instanceData,
+ Tcl_WideInt offset, int mode, int *errorCode);
+static void FileSetupProc(ClientData clientData, int flags);
+static void FileWatchProc(ClientData instanceData, int mask);
+static void FileThreadActionProc(ClientData instanceData,
+ int action);
+static int FileTruncateProc(ClientData instanceData,
+ Tcl_WideInt length);
+static DWORD FileGetType(HANDLE handle);
/*
* This structure describes the channel type structure for file based IO.
@@ -106,7 +102,7 @@ static DWORD FileGetType _ANSI_ARGS_((HANDLE handle));
static Tcl_ChannelType fileChannelType = {
"file", /* Type name. */
- TCL_CHANNEL_VERSION_4, /* v4 channel */
+ TCL_CHANNEL_VERSION_5, /* v5 channel */
FileCloseProc, /* Close proc. */
FileInputProc, /* Input proc. */
FileOutputProc, /* Output proc. */
@@ -121,26 +117,24 @@ static Tcl_ChannelType fileChannelType = {
NULL, /* handler proc. */
FileWideSeekProc, /* Wide seek proc. */
FileThreadActionProc, /* Thread action proc. */
+ FileTruncateProc, /* Truncate proc. */
};
#ifdef HAVE_NO_SEH
-
/*
- * Unlike Borland and Microsoft, we don't register exception handlers
- * by pushing registration records onto the runtime stack. Instead, we
- * register them by creating an EXCEPTION_REGISTRATION within the activation
- * record.
+ * Unlike Borland and Microsoft, we don't register exception handlers by
+ * pushing registration records onto the runtime stack. Instead, we register
+ * them by creating an EXCEPTION_REGISTRATION within the activation record.
*/
typedef struct EXCEPTION_REGISTRATION {
struct EXCEPTION_REGISTRATION* link;
- EXCEPTION_DISPOSITION (*handler)( struct _EXCEPTION_RECORD*, void*,
- struct _CONTEXT*, void* );
+ EXCEPTION_DISPOSITION (*handler)(
+ struct _EXCEPTION_RECORD*, void*, struct _CONTEXT*, void*);
void* ebp;
void* esp;
int status;
} EXCEPTION_REGISTRATION;
-
#endif
/*
@@ -154,16 +148,17 @@ typedef struct EXCEPTION_REGISTRATION {
* None.
*
* Side effects:
- * Creates a new window and creates an exit handler.
+ * Creates a new window and creates an exit handler.
*
*----------------------------------------------------------------------
*/
static ThreadSpecificData *
-FileInit()
+FileInit(void)
{
ThreadSpecificData *tsdPtr =
- (ThreadSpecificData *)TclThreadDataKeyGet(&dataKey);
+ (ThreadSpecificData *)TclThreadDataKeyGet(&dataKey);
+
if (tsdPtr == NULL) {
tsdPtr = TCL_TSD_INIT(&dataKey);
tsdPtr->firstFilePtr = NULL;
@@ -178,8 +173,8 @@ FileInit()
*
* FileChannelExitHandler --
*
- * This function is called to cleanup the channel driver before
- * Tcl is unloaded.
+ * This function is called to cleanup the channel driver before Tcl is
+ * unloaded.
*
* Results:
* None.
@@ -191,8 +186,8 @@ FileInit()
*/
static void
-FileChannelExitHandler(clientData)
- ClientData clientData; /* Old window proc */
+FileChannelExitHandler(
+ ClientData clientData) /* Old window proc */
{
Tcl_DeleteEventSource(FileSetupProc, FileCheckProc, NULL);
}
@@ -202,8 +197,8 @@ FileChannelExitHandler(clientData)
*
* FileSetupProc --
*
- * This procedure is invoked before Tcl_DoOneEvent blocks waiting
- * for an event.
+ * This function is invoked before Tcl_DoOneEvent blocks waiting for an
+ * event.
*
* Results:
* None.
@@ -215,9 +210,9 @@ FileChannelExitHandler(clientData)
*/
void
-FileSetupProc(data, flags)
- ClientData data; /* Not used. */
- int flags; /* Event flags as passed to Tcl_DoOneEvent. */
+FileSetupProc(
+ ClientData data, /* Not used. */
+ int flags) /* Event flags as passed to Tcl_DoOneEvent. */
{
FileInfo *infoPtr;
Tcl_Time blockTime = { 0, 0 };
@@ -226,12 +221,12 @@ FileSetupProc(data, flags)
if (!(flags & TCL_FILE_EVENTS)) {
return;
}
-
+
/*
- * Check to see if there is a ready file. If so, poll.
+ * Check to see if there is a ready file. If so, poll.
*/
- for (infoPtr = tsdPtr->firstFilePtr; infoPtr != NULL;
+ for (infoPtr = tsdPtr->firstFilePtr; infoPtr != NULL;
infoPtr = infoPtr->nextPtr) {
if (infoPtr->watchMask) {
Tcl_SetMaxBlockTime(&blockTime);
@@ -245,8 +240,8 @@ FileSetupProc(data, flags)
*
* FileCheckProc --
*
- * This procedure is called by Tcl_DoOneEvent to check the file
- * event source for events.
+ * This function is called by Tcl_DoOneEvent to check the file event
+ * source for events.
*
* Results:
* None.
@@ -258,9 +253,9 @@ FileSetupProc(data, flags)
*/
static void
-FileCheckProc(data, flags)
- ClientData data; /* Not used. */
- int flags; /* Event flags as passed to Tcl_DoOneEvent. */
+FileCheckProc(
+ ClientData data, /* Not used. */
+ int flags) /* Event flags as passed to Tcl_DoOneEvent. */
{
FileEvent *evPtr;
FileInfo *infoPtr;
@@ -269,14 +264,13 @@ FileCheckProc(data, flags)
if (!(flags & TCL_FILE_EVENTS)) {
return;
}
-
+
/*
- * Queue events for any ready files that don't already have events
- * queued (caused by persistent states that won't generate WinSock
- * events).
+ * Queue events for any ready files that don't already have events queued
+ * (caused by persistent states that won't generate WinSock events).
*/
- for (infoPtr = tsdPtr->firstFilePtr; infoPtr != NULL;
+ for (infoPtr = tsdPtr->firstFilePtr; infoPtr != NULL;
infoPtr = infoPtr->nextPtr) {
if (infoPtr->watchMask && !(infoPtr->flags & FILE_PENDING)) {
infoPtr->flags |= FILE_PENDING;
@@ -288,19 +282,20 @@ FileCheckProc(data, flags)
}
}
-/*----------------------------------------------------------------------
+/*
+ *----------------------------------------------------------------------
*
* FileEventProc --
*
- * This function is invoked by Tcl_ServiceEvent when a file event
- * reaches the front of the event queue. This procedure invokes
- * Tcl_NotifyChannel on the file.
+ * This function is invoked by Tcl_ServiceEvent when a file event reaches
+ * the front of the event queue. This function invokes Tcl_NotifyChannel
+ * on the file.
*
* Results:
- * Returns 1 if the event was handled, meaning it should be removed
- * from the queue. Returns 0 if the event was not handled, meaning
- * it should stay on the queue. The only time the event isn't
- * handled is if the TCL_FILE_EVENTS flag bit isn't set.
+ * Returns 1 if the event was handled, meaning it should be removed from
+ * the queue. Returns 0 if the event was not handled, meaning it should
+ * stay on the queue. The only time the event isn't handled is if the
+ * TCL_FILE_EVENTS flag bit isn't set.
*
* Side effects:
* Whatever the notifier callback does.
@@ -309,10 +304,10 @@ FileCheckProc(data, flags)
*/
static int
-FileEventProc(evPtr, flags)
- Tcl_Event *evPtr; /* Event to service. */
- int flags; /* Flags that indicate what events to
- * handle, such as TCL_FILE_EVENTS. */
+FileEventProc(
+ Tcl_Event *evPtr, /* Event to service. */
+ int flags) /* Flags that indicate what events to handle,
+ * such as TCL_FILE_EVENTS. */
{
FileEvent *fileEvPtr = (FileEvent *)evPtr;
FileInfo *infoPtr;
@@ -324,9 +319,9 @@ FileEventProc(evPtr, flags)
/*
* Search through the list of watched files for the one whose handle
- * matches the event. We do this rather than simply dereferencing
- * the handle in the event so that files can be deleted while the
- * event is in the queue.
+ * matches the event. We do this rather than simply dereferencing the
+ * handle in the event so that files can be deleted while the event is in
+ * the queue.
*/
for (infoPtr = tsdPtr->firstFilePtr; infoPtr != NULL;
@@ -357,13 +352,13 @@ FileEventProc(evPtr, flags)
*/
static int
-FileBlockProc(instanceData, mode)
- ClientData instanceData; /* Instance data for channel. */
- int mode; /* TCL_MODE_BLOCKING or
- * TCL_MODE_NONBLOCKING. */
+FileBlockProc(
+ ClientData instanceData, /* Instance data for channel. */
+ int mode) /* TCL_MODE_BLOCKING or
+ * TCL_MODE_NONBLOCKING. */
{
FileInfo *infoPtr = (FileInfo *) instanceData;
-
+
/*
* Files on Windows can not be switched between blocking and nonblocking,
* hence we have to emulate the behavior. This is done in the input
@@ -396,9 +391,9 @@ FileBlockProc(instanceData, mode)
*/
static int
-FileCloseProc(instanceData, interp)
- ClientData instanceData; /* Pointer to FileInfo structure. */
- Tcl_Interp *interp; /* Not used. */
+FileCloseProc(
+ ClientData instanceData, /* Pointer to FileInfo structure. */
+ Tcl_Interp *interp) /* Not used. */
{
FileInfo *fileInfoPtr = (FileInfo *) instanceData;
FileInfo *infoPtr;
@@ -412,15 +407,15 @@ FileCloseProc(instanceData, interp)
FileWatchProc(instanceData, 0);
/*
- * Don't close the Win32 handle if the handle is a standard channel
- * during the thread exit process. Otherwise, one thread may kill
- * the stdio of another.
+ * Don't close the Win32 handle if the handle is a standard channel during
+ * the thread exit process. Otherwise, one thread may kill the stdio of
+ * another.
*/
- if (!TclInThreadExit()
+ if (!TclInThreadExit()
|| ((GetStdHandle(STD_INPUT_HANDLE) != fileInfoPtr->handle)
- && (GetStdHandle(STD_OUTPUT_HANDLE) != fileInfoPtr->handle)
- && (GetStdHandle(STD_ERROR_HANDLE) != fileInfoPtr->handle))) {
+ && (GetStdHandle(STD_OUTPUT_HANDLE) != fileInfoPtr->handle)
+ && (GetStdHandle(STD_ERROR_HANDLE) != fileInfoPtr->handle))) {
if (CloseHandle(fileInfoPtr->handle) == FALSE) {
TclWinConvertError(GetLastError());
errorCode = errno;
@@ -430,19 +425,21 @@ FileCloseProc(instanceData, interp)
/*
* See if this FileInfo* is still on the thread local list.
*/
+
tsdPtr = TCL_TSD_INIT(&dataKey);
- for (infoPtr = tsdPtr->firstFilePtr; infoPtr != NULL;
+ for (infoPtr = tsdPtr->firstFilePtr; infoPtr != NULL;
infoPtr = infoPtr->nextPtr) {
if (infoPtr == fileInfoPtr) {
- /*
- * This channel exists on the thread local list. It should
- * have been removed by an earlier Thread Action call,
- * but do that now since just deallocating fileInfoPtr would
- * leave an deallocated pointer on the thread local list.
- */
+ /*
+ * This channel exists on the thread local list. It should have
+ * been removed by an earlier Threadaction call, but do that now
+ * since just deallocating fileInfoPtr would leave an deallocated
+ * pointer on the thread local list.
+ */
+
FileThreadActionProc(fileInfoPtr,TCL_CHANNEL_THREAD_REMOVE);
- break;
- }
+ break;
+ }
}
ckfree((char *)fileInfoPtr);
return errorCode;
@@ -456,44 +453,45 @@ FileCloseProc(instanceData, interp)
* Seeks on a file-based channel. Returns the new position.
*
* Results:
- * -1 if failed, the new position if successful. If failed, it
- * also sets *errorCodePtr to the error code.
+ * -1 if failed, the new position if successful. If failed, it also sets
+ * *errorCodePtr to the error code.
*
* Side effects:
- * Moves the location at which the channel will be accessed in
- * future operations.
+ * Moves the location at which the channel will be accessed in future
+ * operations.
*
*----------------------------------------------------------------------
*/
static int
-FileSeekProc(instanceData, offset, mode, errorCodePtr)
- ClientData instanceData; /* File state. */
- long offset; /* Offset to seek to. */
- int mode; /* Relative to where should we seek? */
- int *errorCodePtr; /* To store error code. */
+FileSeekProc(
+ ClientData instanceData, /* File state. */
+ long offset, /* Offset to seek to. */
+ int mode, /* Relative to where should we seek? */
+ int *errorCodePtr) /* To store error code. */
{
FileInfo *infoPtr = (FileInfo *) instanceData;
- DWORD moveMethod, newPos, oldPos;
- LONG newPosHigh, oldPosHigh;
+ LONG newPos, newPosHigh, oldPos, oldPosHigh;
+ DWORD moveMethod;
*errorCodePtr = 0;
if (mode == SEEK_SET) {
- moveMethod = FILE_BEGIN;
+ moveMethod = FILE_BEGIN;
} else if (mode == SEEK_CUR) {
- moveMethod = FILE_CURRENT;
+ moveMethod = FILE_CURRENT;
} else {
- moveMethod = FILE_END;
+ moveMethod = FILE_END;
}
/*
* Save our current place in case we need to roll-back the seek.
*/
- oldPosHigh = (LONG)0;
- oldPos = SetFilePointer(infoPtr->handle, (LONG)0, &oldPosHigh,
- FILE_CURRENT);
- if (oldPos == INVALID_SET_FILE_POINTER) {
+
+ oldPosHigh = 0;
+ oldPos = SetFilePointer(infoPtr->handle, 0, &oldPosHigh, FILE_CURRENT);
+ if (oldPos == (LONG)INVALID_SET_FILE_POINTER) {
DWORD winError = GetLastError();
+
if (winError != NO_ERROR) {
TclWinConvertError(winError);
*errorCodePtr = errno;
@@ -501,11 +499,11 @@ FileSeekProc(instanceData, offset, mode, errorCodePtr)
}
}
- newPosHigh = (LONG)(offset < 0 ? -1 : 0);
- newPos = SetFilePointer(infoPtr->handle, (LONG) offset, &newPosHigh,
- moveMethod);
- if (newPos == INVALID_SET_FILE_POINTER) {
+ newPosHigh = (offset < 0 ? -1 : 0);
+ newPos = SetFilePointer(infoPtr->handle, offset, &newPosHigh, moveMethod);
+ if (newPos == (LONG)INVALID_SET_FILE_POINTER) {
DWORD winError = GetLastError();
+
if (winError != NO_ERROR) {
TclWinConvertError(winError);
*errorCodePtr = errno;
@@ -516,9 +514,10 @@ FileSeekProc(instanceData, offset, mode, errorCodePtr)
/*
* Check for expressability in our return type, and roll-back otherwise.
*/
+
if (newPosHigh != 0) {
*errorCodePtr = EOVERFLOW;
- SetFilePointer(infoPtr->handle, (LONG)oldPos, &oldPosHigh, FILE_BEGIN);
+ SetFilePointer(infoPtr->handle, oldPos, &oldPosHigh, FILE_BEGIN);
return -1;
}
return (int) newPos;
@@ -532,41 +531,42 @@ FileSeekProc(instanceData, offset, mode, errorCodePtr)
* Seeks on a file-based channel. Returns the new position.
*
* Results:
- * -1 if failed, the new position if successful. If failed, it
- * also sets *errorCodePtr to the error code.
+ * -1 if failed, the new position if successful. If failed, it also sets
+ * *errorCodePtr to the error code.
*
* Side effects:
- * Moves the location at which the channel will be accessed in
- * future operations.
+ * Moves the location at which the channel will be accessed in future
+ * operations.
*
*----------------------------------------------------------------------
*/
static Tcl_WideInt
-FileWideSeekProc(instanceData, offset, mode, errorCodePtr)
- ClientData instanceData; /* File state. */
- Tcl_WideInt offset; /* Offset to seek to. */
- int mode; /* Relative to where should we seek? */
- int *errorCodePtr; /* To store error code. */
+FileWideSeekProc(
+ ClientData instanceData, /* File state. */
+ Tcl_WideInt offset, /* Offset to seek to. */
+ int mode, /* Relative to where should we seek? */
+ int *errorCodePtr) /* To store error code. */
{
FileInfo *infoPtr = (FileInfo *) instanceData;
- DWORD moveMethod, newPos;
- LONG newPosHigh;
+ DWORD moveMethod;
+ LONG newPos, newPosHigh;
*errorCodePtr = 0;
if (mode == SEEK_SET) {
- moveMethod = FILE_BEGIN;
+ moveMethod = FILE_BEGIN;
} else if (mode == SEEK_CUR) {
- moveMethod = FILE_CURRENT;
+ moveMethod = FILE_CURRENT;
} else {
- moveMethod = FILE_END;
+ moveMethod = FILE_END;
}
- newPosHigh = (DWORD)(offset >> 32);
- newPos = SetFilePointer(infoPtr->handle, (LONG) offset, &newPosHigh,
- moveMethod);
- if (newPos == INVALID_SET_FILE_POINTER) {
+ newPosHigh = Tcl_WideAsLong(offset >> 32);
+ newPos = SetFilePointer(infoPtr->handle, Tcl_WideAsLong(offset),
+ &newPosHigh, moveMethod);
+ if (newPos == (LONG)INVALID_SET_FILE_POINTER) {
DWORD winError = GetLastError();
+
if (winError != NO_ERROR) {
TclWinConvertError(winError);
*errorCodePtr = errno;
@@ -579,10 +579,82 @@ FileWideSeekProc(instanceData, offset, mode, errorCodePtr)
/*
*----------------------------------------------------------------------
*
+ * FileTruncateProc --
+ *
+ * Truncates a file-based channel. Returns the error code.
+ *
+ * Results:
+ * 0 if successful, POSIX-y error code if it failed.
+ *
+ * Side effects:
+ * Truncates the file, may move file pointers too.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+FileTruncateProc(
+ ClientData instanceData, /* File state. */
+ Tcl_WideInt length) /* Length to truncate at. */
+{
+ FileInfo *infoPtr = (FileInfo *) instanceData;
+ LONG newPos, newPosHigh, oldPos, oldPosHigh;
+
+ /*
+ * Save where we were...
+ */
+
+ oldPosHigh = 0;
+ oldPos = SetFilePointer(infoPtr->handle, 0, &oldPosHigh, FILE_CURRENT);
+ if (oldPos == (LONG)INVALID_SET_FILE_POINTER) {
+ DWORD winError = GetLastError();
+ if (winError != NO_ERROR) {
+ TclWinConvertError(winError);
+ return errno;
+ }
+ }
+
+ /*
+ * Move to where we want to truncate
+ */
+
+ newPosHigh = Tcl_WideAsLong(length >> 32);
+ newPos = SetFilePointer(infoPtr->handle, Tcl_WideAsLong(length),
+ &newPosHigh, FILE_BEGIN);
+ if (newPos == (LONG)INVALID_SET_FILE_POINTER) {
+ DWORD winError = GetLastError();
+ if (winError != NO_ERROR) {
+ TclWinConvertError(winError);
+ return errno;
+ }
+ }
+
+ /*
+ * Perform the truncation (unlike POSIX ftruncate(), we needed to move to
+ * the location to truncate at first).
+ */
+
+ if (!SetEndOfFile(infoPtr->handle)) {
+ TclWinConvertError(GetLastError());
+ return errno;
+ }
+
+ /*
+ * Move back. If this last step fails, we don't care; it's just a "best
+ * effort" attempt to restore our file pointer to where it was.
+ */
+
+ SetFilePointer(infoPtr->handle, oldPos, &oldPosHigh, FILE_BEGIN);
+ return 0;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
* FileInputProc --
*
- * Reads input from the IO channel into the buffer given. Returns
- * count of how many bytes were actually read, and an error indication.
+ * Reads input from the IO channel into the buffer given. Returns count
+ * of how many bytes were actually read, and an error indication.
*
* Results:
* A count of how many bytes were read is returned and an error
@@ -595,12 +667,11 @@ FileWideSeekProc(instanceData, offset, mode, errorCodePtr)
*/
static int
-FileInputProc(instanceData, buf, bufSize, errorCode)
- ClientData instanceData; /* File state. */
- char *buf; /* Where to store data read. */
- int bufSize; /* How much space is available
- * in the buffer? */
- int *errorCode; /* Where to store error code. */
+FileInputProc(
+ ClientData instanceData, /* File state. */
+ char *buf, /* Where to store data read. */
+ int bufSize, /* Num bytes available in buffer. */
+ int *errorCode) /* Where to store error code. */
{
FileInfo *infoPtr;
DWORD bytesRead;
@@ -609,18 +680,18 @@ FileInputProc(instanceData, buf, bufSize, errorCode)
infoPtr = (FileInfo *) instanceData;
/*
- * Note that we will block on reads from a console buffer until a
- * full line has been entered. The only way I know of to get
- * around this is to write a console driver. We should probably
- * do this at some point, but for now, we just block. The same
- * problem exists for files being read over the network.
+ * Note that we will block on reads from a console buffer until a full
+ * line has been entered. The only way I know of to get around this is to
+ * write a console driver. We should probably do this at some point, but
+ * for now, we just block. The same problem exists for files being read
+ * over the network.
*/
if (ReadFile(infoPtr->handle, (LPVOID) buf, (DWORD) bufSize, &bytesRead,
- (LPOVERLAPPED) NULL) != FALSE) {
+ (LPOVERLAPPED) NULL) != FALSE) {
return bytesRead;
}
-
+
TclWinConvertError(GetLastError());
*errorCode = errno;
if (errno == EPIPE) {
@@ -634,12 +705,12 @@ FileInputProc(instanceData, buf, bufSize, errorCode)
*
* FileOutputProc --
*
- * Writes the given output on the IO channel. Returns count of how
- * many characters were actually written, and an error indication.
+ * Writes the given output on the IO channel. Returns count of how many
+ * characters were actually written, and an error indication.
*
* Results:
- * A count of how many characters were written is returned and an
- * error indication is returned in an output argument.
+ * A count of how many characters were written is returned and an error
+ * indication is returned in an output argument.
*
* Side effects:
* Writes output on the actual channel.
@@ -648,15 +719,15 @@ FileInputProc(instanceData, buf, bufSize, errorCode)
*/
static int
-FileOutputProc(instanceData, buf, toWrite, errorCode)
- ClientData instanceData; /* File state. */
- CONST char *buf; /* The data buffer. */
- int toWrite; /* How many bytes to write? */
- int *errorCode; /* Where to store error code. */
+FileOutputProc(
+ ClientData instanceData, /* File state. */
+ CONST char *buf, /* The data buffer. */
+ int toWrite, /* How many bytes to write? */
+ int *errorCode) /* Where to store error code. */
{
FileInfo *infoPtr = (FileInfo *) instanceData;
DWORD bytesWritten;
-
+
*errorCode = 0;
/*
@@ -665,14 +736,14 @@ FileOutputProc(instanceData, buf, toWrite, errorCode)
*/
if (infoPtr->flags & FILE_APPEND) {
- SetFilePointer(infoPtr->handle, 0, NULL, FILE_END);
+ SetFilePointer(infoPtr->handle, 0, NULL, FILE_END);
}
- if (WriteFile(infoPtr->handle, (LPVOID) buf, (DWORD) toWrite, &bytesWritten,
- (LPOVERLAPPED) NULL) == FALSE) {
- TclWinConvertError(GetLastError());
- *errorCode = errno;
- return -1;
+ if (WriteFile(infoPtr->handle, (LPVOID) buf, (DWORD) toWrite,
+ &bytesWritten, (LPOVERLAPPED) NULL) == FALSE) {
+ TclWinConvertError(GetLastError());
+ *errorCode = errno;
+ return -1;
}
infoPtr->dirty = 1;
return bytesWritten;
@@ -683,8 +754,7 @@ FileOutputProc(instanceData, buf, toWrite, errorCode)
*
* FileWatchProc --
*
- * Called by the notifier to set up to watch for events on this
- * channel.
+ * Called by the notifier to set up to watch for events on this channel.
*
* Results:
* None.
@@ -696,18 +766,18 @@ FileOutputProc(instanceData, buf, toWrite, errorCode)
*/
static void
-FileWatchProc(instanceData, mask)
- ClientData instanceData; /* File state. */
- int mask; /* What events to watch for; OR-ed
- * combination of TCL_READABLE,
- * TCL_WRITABLE and TCL_EXCEPTION. */
+FileWatchProc(
+ ClientData instanceData, /* File state. */
+ int mask) /* What events to watch for; OR-ed combination
+ * of TCL_READABLE, TCL_WRITABLE and
+ * TCL_EXCEPTION. */
{
FileInfo *infoPtr = (FileInfo *) instanceData;
Tcl_Time blockTime = { 0, 0 };
/*
- * Since the file is always ready for events, we set the block time
- * to zero so we will poll.
+ * Since the file is always ready for events, we set the block time to
+ * zero so we will poll.
*/
infoPtr->watchMask = mask & infoPtr->validMask;
@@ -721,12 +791,12 @@ FileWatchProc(instanceData, mask)
*
* FileGetHandleProc --
*
- * Called from Tcl_GetChannelHandle to retrieve OS handles from
- * a file based channel.
+ * Called from Tcl_GetChannelHandle to retrieve OS handles from a file
+ * based channel.
*
* Results:
- * Returns TCL_OK with the fd in handlePtr, or TCL_ERROR if
- * there is no handle for the specified direction.
+ * Returns TCL_OK with the fd in handlePtr, or TCL_ERROR if there is no
+ * handle for the specified direction.
*
* Side effects:
* None.
@@ -735,10 +805,10 @@ FileWatchProc(instanceData, mask)
*/
static int
-FileGetHandleProc(instanceData, direction, handlePtr)
- ClientData instanceData; /* The file state. */
- int direction; /* TCL_READABLE or TCL_WRITABLE */
- ClientData *handlePtr; /* Where to store the handle. */
+FileGetHandleProc(
+ ClientData instanceData, /* The file state. */
+ int direction, /* TCL_READABLE or TCL_WRITABLE */
+ ClientData *handlePtr) /* Where to store the handle. */
{
FileInfo *infoPtr = (FileInfo *) instanceData;
@@ -749,7 +819,6 @@ FileGetHandleProc(instanceData, direction, handlePtr)
return TCL_ERROR;
}
}
-
/*
*----------------------------------------------------------------------
@@ -759,25 +828,24 @@ FileGetHandleProc(instanceData, direction, handlePtr)
* Open an File based channel on Unix systems.
*
* Results:
- * The new channel or NULL. If NULL, the output argument
- * errorCodePtr is set to a POSIX error.
+ * The new channel or NULL. If NULL, the output argument errorCodePtr is
+ * set to a POSIX error.
*
* Side effects:
- * May open the channel and may cause creation of a file on the
- * file system.
+ * May open the channel and may cause creation of a file on the file
+ * system.
*
*----------------------------------------------------------------------
*/
Tcl_Channel
-TclpOpenFileChannel(interp, pathPtr, mode, permissions)
- Tcl_Interp *interp; /* Interpreter for error reporting;
- * can be NULL. */
- Tcl_Obj *pathPtr; /* Name of file to open. */
- int mode; /* POSIX mode. */
- int permissions; /* If the open involves creating a
- * file, with what modes to create
- * it? */
+TclpOpenFileChannel(
+ Tcl_Interp *interp, /* Interpreter for error reporting; can be
+ * NULL. */
+ Tcl_Obj *pathPtr, /* Name of file to open. */
+ int mode, /* POSIX mode. */
+ int permissions) /* If the open involves creating a file, with
+ * what modes to create it? */
{
Tcl_Channel channel = 0;
int channelPermissions = 0;
@@ -785,30 +853,29 @@ TclpOpenFileChannel(interp, pathPtr, mode, permissions)
CONST TCHAR *nativeName;
HANDLE handle;
char channelName[16 + TCL_INTEGER_SPACE];
- TclFile readFile = NULL;
- TclFile writeFile = NULL;
+ TclFile readFile = NULL, writeFile = NULL;
nativeName = (TCHAR*) Tcl_FSGetNativePath(pathPtr);
if (nativeName == NULL) {
return NULL;
}
-
+
switch (mode & (O_RDONLY | O_WRONLY | O_RDWR)) {
- case O_RDONLY:
- accessMode = GENERIC_READ;
- channelPermissions = TCL_READABLE;
- break;
- case O_WRONLY:
- accessMode = GENERIC_WRITE;
- channelPermissions = TCL_WRITABLE;
- break;
- case O_RDWR:
- accessMode = (GENERIC_READ | GENERIC_WRITE);
- channelPermissions = (TCL_READABLE | TCL_WRITABLE);
- break;
- default:
- panic("TclpOpenFileChannel: invalid mode value");
- break;
+ case O_RDONLY:
+ accessMode = GENERIC_READ;
+ channelPermissions = TCL_READABLE;
+ break;
+ case O_WRONLY:
+ accessMode = GENERIC_WRITE;
+ channelPermissions = TCL_WRITABLE;
+ break;
+ case O_RDWR:
+ accessMode = (GENERIC_READ | GENERIC_WRITE);
+ channelPermissions = (TCL_READABLE | TCL_WRITABLE);
+ break;
+ default:
+ Tcl_Panic("TclpOpenFileChannel: invalid mode value");
+ break;
}
/*
@@ -816,23 +883,23 @@ TclpOpenFileChannel(interp, pathPtr, mode, permissions)
*/
switch (mode & (O_CREAT | O_EXCL | O_TRUNC)) {
- case (O_CREAT | O_EXCL):
- case (O_CREAT | O_EXCL | O_TRUNC):
- createMode = CREATE_NEW;
- break;
- case (O_CREAT | O_TRUNC):
- createMode = CREATE_ALWAYS;
- break;
- case O_CREAT:
- createMode = OPEN_ALWAYS;
- break;
- case O_TRUNC:
- case (O_TRUNC | O_EXCL):
- createMode = TRUNCATE_EXISTING;
- break;
- default:
- createMode = OPEN_EXISTING;
- break;
+ case (O_CREAT | O_EXCL):
+ case (O_CREAT | O_EXCL | O_TRUNC):
+ createMode = CREATE_NEW;
+ break;
+ case (O_CREAT | O_TRUNC):
+ createMode = CREATE_ALWAYS;
+ break;
+ case O_CREAT:
+ createMode = OPEN_ALWAYS;
+ break;
+ case O_TRUNC:
+ case (O_TRUNC | O_EXCL):
+ createMode = TRUNCATE_EXISTING;
+ break;
+ default:
+ createMode = OPEN_EXISTING;
+ break;
}
/*
@@ -841,14 +908,14 @@ TclpOpenFileChannel(interp, pathPtr, mode, permissions)
*/
if (mode & O_CREAT) {
- if (permissions & S_IWRITE) {
- flags = FILE_ATTRIBUTE_NORMAL;
- } else {
- flags = FILE_ATTRIBUTE_READONLY;
- }
+ if (permissions & S_IWRITE) {
+ flags = FILE_ATTRIBUTE_NORMAL;
+ } else {
+ flags = FILE_ATTRIBUTE_READONLY;
+ }
} else {
flags = (*tclWinProcs->getFileAttributesProc)(nativeName);
- if (flags == 0xFFFFFFFF) {
+ if (flags == 0xFFFFFFFF) {
flags = 0;
}
}
@@ -863,48 +930,48 @@ TclpOpenFileChannel(interp, pathPtr, mode, permissions)
* Now we get to create the file.
*/
- handle = (*tclWinProcs->createFileProc)(nativeName, accessMode,
+ handle = (*tclWinProcs->createFileProc)(nativeName, accessMode,
shareMode, NULL, createMode, flags, (HANDLE) NULL);
if (handle == INVALID_HANDLE_VALUE) {
- DWORD err;
- err = GetLastError();
+ DWORD err = GetLastError();
+
if ((err & 0xffffL) == ERROR_OPEN_FAILED) {
err = (mode & O_CREAT) ? ERROR_FILE_EXISTS : ERROR_FILE_NOT_FOUND;
}
- TclWinConvertError(err);
+ TclWinConvertError(err);
if (interp != (Tcl_Interp *) NULL) {
- Tcl_AppendResult(interp, "couldn't open \"",
- Tcl_GetString(pathPtr), "\": ",
- Tcl_PosixError(interp), (char *) NULL);
- }
- return NULL;
+ Tcl_AppendResult(interp, "couldn't open \"", TclGetString(pathPtr),
+ "\": ", Tcl_PosixError(interp), NULL);
+ }
+ return NULL;
}
-
+
channel = NULL;
- switch ( FileGetType(handle) ) {
+ switch (FileGetType(handle)) {
case FILE_TYPE_SERIAL:
/*
- * Reopen channel for OVERLAPPED operation
- * Normally this shouldn't fail, because the channel exists
+ * Reopen channel for OVERLAPPED operation. Normally this shouldn't
+ * fail, because the channel exists.
*/
+
handle = TclWinSerialReopen(handle, nativeName, accessMode);
if (handle == INVALID_HANDLE_VALUE) {
TclWinConvertError(GetLastError());
if (interp != (Tcl_Interp *) NULL) {
Tcl_AppendResult(interp, "couldn't reopen serial \"",
- Tcl_GetString(pathPtr), "\": ",
- Tcl_PosixError(interp), (char *) NULL);
+ TclGetString(pathPtr), "\": ",
+ Tcl_PosixError(interp), NULL);
}
return NULL;
}
channel = TclWinOpenSerialChannel(handle, channelName,
- channelPermissions);
+ channelPermissions);
break;
case FILE_TYPE_CONSOLE:
channel = TclWinOpenConsoleChannel(handle, channelName,
- channelPermissions);
+ channelPermissions);
break;
case FILE_TYPE_PIPE:
if (channelPermissions & TCL_READABLE) {
@@ -919,20 +986,18 @@ TclpOpenFileChannel(interp, pathPtr, mode, permissions)
case FILE_TYPE_DISK:
case FILE_TYPE_UNKNOWN:
channel = TclWinOpenFileChannel(handle, channelName,
- channelPermissions,
- (mode & O_APPEND) ? FILE_APPEND : 0);
+ channelPermissions, (mode & O_APPEND) ? FILE_APPEND : 0);
break;
default:
/*
- * The handle is of an unknown type, probably /dev/nul equivalent
- * or possibly a closed handle.
+ * The handle is of an unknown type, probably /dev/nul equivalent or
+ * possibly a closed handle.
*/
-
+
channel = NULL;
- Tcl_AppendResult(interp, "couldn't open \"",
- Tcl_GetString(pathPtr), "\": ",
- "bad file type", (char *) NULL);
+ Tcl_AppendResult(interp, "couldn't open \"", TclGetString(pathPtr),
+ "\": bad file type", NULL);
break;
}
@@ -944,8 +1009,7 @@ TclpOpenFileChannel(interp, pathPtr, mode, permissions)
*
* Tcl_MakeFileChannel --
*
- * Creates a Tcl_Channel from an existing platform specific file
- * handle.
+ * Creates a Tcl_Channel from an existing platform specific file handle.
*
* Results:
* The Tcl_Channel created around the preexisting file.
@@ -957,10 +1021,10 @@ TclpOpenFileChannel(interp, pathPtr, mode, permissions)
*/
Tcl_Channel
-Tcl_MakeFileChannel(rawHandle, mode)
- ClientData rawHandle; /* OS level handle */
- int mode; /* ORed combination of TCL_READABLE and
- * TCL_WRITABLE to indicate file mode. */
+Tcl_MakeFileChannel(
+ ClientData rawHandle, /* OS level handle */
+ int mode) /* ORed combination of TCL_READABLE and
+ * TCL_WRITABLE to indicate file mode. */
{
#if defined(HAVE_NO_SEH) && !defined(_WIN64)
EXCEPTION_REGISTRATION registration;
@@ -969,16 +1033,14 @@ Tcl_MakeFileChannel(rawHandle, mode)
Tcl_Channel channel = NULL;
HANDLE handle = (HANDLE) rawHandle;
HANDLE dupedHandle;
- TclFile readFile = NULL;
- TclFile writeFile = NULL;
+ TclFile readFile = NULL, writeFile = NULL;
BOOL result;
if (mode == 0) {
return NULL;
}
- switch (FileGetType(handle))
- {
+ switch (FileGetType(handle)) {
case FILE_TYPE_SERIAL:
channel = TclWinOpenSerialChannel(handle, channelName, mode);
break;
@@ -986,12 +1048,10 @@ Tcl_MakeFileChannel(rawHandle, mode)
channel = TclWinOpenConsoleChannel(handle, channelName, mode);
break;
case FILE_TYPE_PIPE:
- if (mode & TCL_READABLE)
- {
+ if (mode & TCL_READABLE) {
readFile = TclWinMakeFile(handle);
}
- if (mode & TCL_WRITABLE)
- {
+ if (mode & TCL_WRITABLE) {
writeFile = TclWinMakeFile(handle);
}
channel = TclpCreateCommandChannel(readFile, writeFile, NULL, 0, NULL);
@@ -1001,14 +1061,14 @@ Tcl_MakeFileChannel(rawHandle, mode)
case FILE_TYPE_CHAR:
channel = TclWinOpenFileChannel(handle, channelName, mode, 0);
break;
-
+
case FILE_TYPE_UNKNOWN:
default:
/*
- * The handle is of an unknown type. Test the validity of this OS
- * handle by duplicating it, then closing the dupe. The Win32 API
+ * The handle is of an unknown type. Test the validity of this OS
+ * handle by duplicating it, then closing the dupe. The Win32 API
* doesn't provide an IsValidHandle() function, so we have to emulate
- * it here. This test will not work on a console handle reliably,
+ * it here. This test will not work on a console handle reliably,
* which is why we can't test every handle that comes into this
* function in this way.
*/
@@ -1018,7 +1078,7 @@ Tcl_MakeFileChannel(rawHandle, mode)
DUPLICATE_SAME_ACCESS);
if (result == 0) {
- /*
+ /*
* Unable to make a duplicate. It's definately invalid at this
* point.
*/
@@ -1034,12 +1094,11 @@ Tcl_MakeFileChannel(rawHandle, mode)
result = 0;
#if defined(HAVE_NO_SEH) && !defined(_WIN64)
/*
- * Don't have SEH available, do things the hard way.
- * Note that this needs to be one block of asm, to avoid stack
- * imbalance; also, it is illegal for one asm block to contain
- * a jump to another.
+ * Don't have SEH available, do things the hard way. Note that this
+ * needs to be one block of asm, to avoid stack imbalance; also, it is
+ * illegal for one asm block to contain a jump to another.
*/
-
+
__asm__ __volatile__ (
/*
@@ -1049,9 +1108,10 @@ Tcl_MakeFileChannel(rawHandle, mode)
"movl %[dupedHandle], %%ebx" "\n\t"
/*
- * Construct an EXCEPTION_REGISTRATION to protect the
- * call to CloseHandle
+ * Construct an EXCEPTION_REGISTRATION to protect the call to
+ * CloseHandle.
*/
+
"leal %[registration], %%edx" "\n\t"
"movl %%fs:0, %%eax" "\n\t"
"movl %%eax, 0x0(%%edx)" "\n\t" /* link */
@@ -1060,45 +1120,49 @@ Tcl_MakeFileChannel(rawHandle, mode)
"movl %%ebp, 0x8(%%edx)" "\n\t" /* ebp */
"movl %%esp, 0xc(%%edx)" "\n\t" /* esp */
"movl $0, 0x10(%%edx)" "\n\t" /* status */
-
- /* Link the EXCEPTION_REGISTRATION on the chain */
-
+
+ /*
+ * Link the EXCEPTION_REGISTRATION on the chain.
+ */
+
"movl %%edx, %%fs:0" "\n\t"
-
- /* Call CloseHandle( dupedHandle ) */
-
+
+ /*
+ * Call CloseHandle(dupedHandle).
+ */
+
"pushl %%ebx" "\n\t"
"call _CloseHandle@4" "\n\t"
-
- /*
- * Come here on normal exit. Recover the EXCEPTION_REGISTRATION
+
+ /*
+ * Come here on normal exit. Recover the EXCEPTION_REGISTRATION
* and put a TRUE status return into it.
*/
-
+
"movl %%fs:0, %%edx" "\n\t"
"movl $1, %%eax" "\n\t"
"movl %%eax, 0x10(%%edx)" "\n\t"
"jmp 2f" "\n"
-
+
/*
- * Come here on an exception. Recover the EXCEPTION_REGISTRATION
+ * Come here on an exception. Recover the EXCEPTION_REGISTRATION
*/
-
+
"1:" "\t"
"movl %%fs:0, %%edx" "\n\t"
"movl 0x8(%%edx), %%edx" "\n\t"
-
- /*
- * Come here however we exited. Restore context from the
+
+ /*
+ * Come here however we exited. Restore context from the
* EXCEPTION_REGISTRATION in case the stack is unbalanced.
*/
-
+
"2:" "\t"
"movl 0xc(%%edx), %%esp" "\n\t"
"movl 0x8(%%edx), %%ebp" "\n\t"
"movl 0x0(%%edx), %%eax" "\n\t"
"movl %%eax, %%fs:0" "\n\t"
-
+
:
/* No outputs */
:
@@ -1108,7 +1172,6 @@ Tcl_MakeFileChannel(rawHandle, mode)
"%eax", "%ebx", "%ecx", "%edx", "%esi", "%edi", "memory"
);
result = registration.status;
-
#else
#ifndef HAVE_NO_SEH
__try {
@@ -1123,9 +1186,9 @@ Tcl_MakeFileChannel(rawHandle, mode)
return NULL;
}
- /* Fall through, the handle is valid. */
-
/*
+ * Fall through, the handle is valid.
+ *
* Create the undefined channel, anyways, because we know the handle
* is valid to something.
*/
@@ -1147,42 +1210,42 @@ Tcl_MakeFileChannel(rawHandle, mode)
* Returns the specified default standard channel, or NULL.
*
* Side effects:
- * May cause the creation of a standard channel and the underlying
- * file.
+ * May cause the creation of a standard channel and the underlying file.
*
*----------------------------------------------------------------------
*/
Tcl_Channel
-TclpGetDefaultStdChannel(type)
- int type; /* One of TCL_STDIN, TCL_STDOUT, TCL_STDERR. */
+TclpGetDefaultStdChannel(
+ int type) /* One of TCL_STDIN, TCL_STDOUT, or
+ * TCL_STDERR. */
{
Tcl_Channel channel;
HANDLE handle;
int mode = -1;
char *bufMode = NULL;
- DWORD handleId = (DWORD)INVALID_HANDLE_VALUE;
+ DWORD handleId = (DWORD)-1;
/* Standard handle to retrieve. */
switch (type) {
- case TCL_STDIN:
- handleId = STD_INPUT_HANDLE;
- mode = TCL_READABLE;
- bufMode = "line";
- break;
- case TCL_STDOUT:
- handleId = STD_OUTPUT_HANDLE;
- mode = TCL_WRITABLE;
- bufMode = "line";
- break;
- case TCL_STDERR:
- handleId = STD_ERROR_HANDLE;
- mode = TCL_WRITABLE;
- bufMode = "none";
- break;
- default:
- panic("TclGetDefaultStdChannel: Unexpected channel type");
- break;
+ case TCL_STDIN:
+ handleId = STD_INPUT_HANDLE;
+ mode = TCL_READABLE;
+ bufMode = "line";
+ break;
+ case TCL_STDOUT:
+ handleId = STD_OUTPUT_HANDLE;
+ mode = TCL_WRITABLE;
+ bufMode = "line";
+ break;
+ case TCL_STDERR:
+ handleId = STD_ERROR_HANDLE;
+ mode = TCL_WRITABLE;
+ bufMode = "none";
+ break;
+ default:
+ Tcl_Panic("TclGetDefaultStdChannel: Unexpected channel type");
+ break;
}
handle = GetStdHandle(handleId);
@@ -1207,126 +1270,121 @@ TclpGetDefaultStdChannel(type)
* Set up the normal channel options for stdio handles.
*/
- if ((Tcl_SetChannelOption((Tcl_Interp *) NULL, channel, "-translation",
- "auto") == TCL_ERROR)
- || (Tcl_SetChannelOption((Tcl_Interp *) NULL, channel, "-eofchar",
- "\032 {}") == TCL_ERROR)
- || (Tcl_SetChannelOption((Tcl_Interp *) NULL, channel,
- "-buffering", bufMode) == TCL_ERROR)) {
- Tcl_Close((Tcl_Interp *) NULL, channel);
- return (Tcl_Channel) NULL;
+ if (Tcl_SetChannelOption(NULL,channel,"-translation","auto")!=TCL_OK ||
+ Tcl_SetChannelOption(NULL,channel,"-eofchar","\032 {}")!=TCL_OK ||
+ Tcl_SetChannelOption(NULL,channel,"-buffering",bufMode)!=TCL_OK) {
+ Tcl_Close(NULL, channel);
+ return (Tcl_Channel) NULL;
}
return channel;
}
-
-
/*
*----------------------------------------------------------------------
*
* TclWinOpenFileChannel --
*
- * Constructs a File channel for the specified standard OS handle.
- * This is a helper function to break up the construction of
- * channels into File, Console, or Serial.
+ * Constructs a File channel for the specified standard OS handle. This
+ * is a helper function to break up the construction of channels into
+ * File, Console, or Serial.
*
* Results:
* Returns the new channel, or NULL.
*
* Side effects:
- * May open the channel and may cause creation of a file on the
- * file system.
+ * May open the channel and may cause creation of a file on the file
+ * system.
*
*----------------------------------------------------------------------
*/
Tcl_Channel
-TclWinOpenFileChannel(handle, channelName, permissions, appendMode)
- HANDLE handle;
- char *channelName;
- int permissions;
- int appendMode;
+TclWinOpenFileChannel(
+ HANDLE handle, /* Win32 HANDLE to swallow */
+ char *channelName, /* Buffer to receive channel name */
+ int permissions, /* OR'ed combination of TCL_READABLE,
+ * TCL_WRITABLE, or TCL_EXCEPTION, indicating
+ * which operations are valid on the file. */
+ int appendMode) /* OR'ed combination of bits indicating what
+ * additional configuration of the channel is
+ * present. */
{
FileInfo *infoPtr;
- ThreadSpecificData *tsdPtr;
-
- tsdPtr = FileInit();
+ ThreadSpecificData *tsdPtr = FileInit();
/*
* See if a channel with this handle already exists.
*/
-
- for (infoPtr = tsdPtr->firstFilePtr; infoPtr != NULL;
- infoPtr = infoPtr->nextPtr) {
+
+ for (infoPtr = tsdPtr->firstFilePtr; infoPtr != NULL;
+ infoPtr = infoPtr->nextPtr) {
if (infoPtr->handle == (HANDLE) handle) {
- return (permissions == infoPtr->validMask) ? infoPtr->channel : NULL;
+ return (permissions==infoPtr->validMask) ? infoPtr->channel : NULL;
}
}
infoPtr = (FileInfo *) ckalloc((unsigned) sizeof(FileInfo));
- /* TIP #218. Removed the code inserting the new structure
- * into the global list. This is now handled in the thread
- * action callbacks, and only there.
+
+ /*
+ * TIP #218. Removed the code inserting the new structure into the global
+ * list. This is now handled in the thread action callbacks, and only
+ * there.
*/
+
infoPtr->nextPtr = NULL;
infoPtr->validMask = permissions;
infoPtr->watchMask = 0;
infoPtr->flags = appendMode;
infoPtr->handle = handle;
infoPtr->dirty = 0;
- wsprintfA(channelName, "file%lx", (int) infoPtr);
-
+ wsprintfA(channelName, "file%lx", PTR2INT(infoPtr));
+
infoPtr->channel = Tcl_CreateChannel(&fileChannelType, channelName,
(ClientData) infoPtr, permissions);
-
+
/*
- * Files have default translation of AUTO and ^Z eof char, which
- * means that a ^Z will be accepted as EOF when reading.
+ * Files have default translation of AUTO and ^Z eof char, which means
+ * that a ^Z will be accepted as EOF when reading.
*/
-
+
Tcl_SetChannelOption(NULL, infoPtr->channel, "-translation", "auto");
Tcl_SetChannelOption(NULL, infoPtr->channel, "-eofchar", "\032 {}");
return infoPtr->channel;
}
-
-
+
/*
*----------------------------------------------------------------------
*
* TclWinFlushDirtyChannels --
*
- * Flush all dirty channels to disk, so that requesting the
- * size of any file returns the correct value.
+ * Flush all dirty channels to disk, so that requesting the size of any
+ * file returns the correct value.
*
* Results:
* None.
*
* Side effects:
- * Information is actually written to disk now, rather than
- * later. Don't call this too often, or there will be a
- * performance hit (i.e. only call when we need to ask for
- * the size of a file).
+ * Information is actually written to disk now, rather than later. Don't
+ * call this too often, or there will be a performance hit (i.e. only
+ * call when we need to ask for the size of a file).
*
*----------------------------------------------------------------------
*/
void
-TclWinFlushDirtyChannels ()
+TclWinFlushDirtyChannels(void)
{
FileInfo *infoPtr;
- ThreadSpecificData *tsdPtr;
-
- tsdPtr = FileInit();
+ ThreadSpecificData *tsdPtr = FileInit();
/*
- * Flush all channels which are dirty, i.e. may have data pending
- * in the OS
+ * Flush all channels which are dirty, i.e. may have data pending in the
+ * OS.
*/
-
- for (infoPtr = tsdPtr->firstFilePtr;
- infoPtr != NULL;
- infoPtr = infoPtr->nextPtr) {
+
+ for (infoPtr = tsdPtr->firstFilePtr; infoPtr != NULL;
+ infoPtr = infoPtr->nextPtr) {
if (infoPtr->dirty) {
FlushFileBuffers(infoPtr->handle);
infoPtr->dirty = 0;
@@ -1351,42 +1409,41 @@ TclWinFlushDirtyChannels ()
*/
static void
-FileThreadActionProc (instanceData, action)
- ClientData instanceData;
- int action;
+FileThreadActionProc(
+ ClientData instanceData,
+ int action)
{
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
FileInfo *infoPtr = (FileInfo *) instanceData;
if (action == TCL_CHANNEL_THREAD_INSERT) {
- infoPtr->nextPtr = tsdPtr->firstFilePtr;
+ infoPtr->nextPtr = tsdPtr->firstFilePtr;
tsdPtr->firstFilePtr = infoPtr;
} else {
- FileInfo **nextPtrPtr;
+ FileInfo **nextPtrPtr;
int removed = 0;
for (nextPtrPtr = &(tsdPtr->firstFilePtr); (*nextPtrPtr) != NULL;
- nextPtrPtr = &((*nextPtrPtr)->nextPtr)) {
+ nextPtrPtr = &((*nextPtrPtr)->nextPtr)) {
if ((*nextPtrPtr) == infoPtr) {
- (*nextPtrPtr) = infoPtr->nextPtr;
+ (*nextPtrPtr) = infoPtr->nextPtr;
removed = 1;
break;
}
}
/*
- * This could happen if the channel was created in one thread
- * and then moved to another without updating the thread
- * local data in each thread.
+ * This could happen if the channel was created in one thread and then
+ * moved to another without updating the thread local data in each
+ * thread.
*/
if (!removed) {
- panic("file info ptr not on thread channel list");
+ Tcl_Panic("file info ptr not on thread channel list");
}
}
}
-
-
+
/*
*----------------------------------------------------------------------
*
@@ -1404,31 +1461,42 @@ FileThreadActionProc (instanceData, action)
*/
DWORD
-FileGetType(handle)
- HANDLE handle; /* Opened file handle */
-{
+FileGetType(
+ HANDLE handle) /* Opened file handle */
+{
DWORD type;
- DWORD consoleParams;
- DCB dcb;
type = GetFileType(handle);
/*
- * If the file is a character device, we need to try to figure out
- * whether it is a serial port, a console, or something else. We
- * test for the console case first because this is more common.
+ * If the file is a character device, we need to try to figure out whether
+ * it is a serial port, a console, or something else. We test for the
+ * console case first because this is more common.
*/
-
- if (type == FILE_TYPE_CHAR || (type == FILE_TYPE_UNKNOWN && !GetLastError())) {
- if (GetConsoleMode(handle, &consoleParams)) {
- type = FILE_TYPE_CONSOLE;
- } else {
- dcb.DCBlength = sizeof( DCB ) ;
- if (GetCommState(handle, &dcb)) {
- type = FILE_TYPE_SERIAL;
- }
- }
+
+ if ((type == FILE_TYPE_CHAR)
+ || ((type == FILE_TYPE_UNKNOWN) && !GetLastError())) {
+ DWORD consoleParams;
+
+ if (GetConsoleMode(handle, &consoleParams)) {
+ type = FILE_TYPE_CONSOLE;
+ } else {
+ DCB dcb;
+
+ dcb.DCBlength = sizeof(DCB);
+ if (GetCommState(handle, &dcb)) {
+ type = FILE_TYPE_SERIAL;
+ }
+ }
}
return type;
}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */