diff options
Diffstat (limited to 'win/tclWinChan.c')
| -rw-r--r-- | win/tclWinChan.c | 103 |
1 files changed, 52 insertions, 51 deletions
diff --git a/win/tclWinChan.c b/win/tclWinChan.c index 5d2175c..90c13f7 100644 --- a/win/tclWinChan.c +++ b/win/tclWinChan.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: tclWinChan.c,v 1.30.2.4 2005/06/23 15:05:22 kennykb Exp $ + * RCS: @(#) $Id: tclWinChan.c,v 1.30.2.5 2006/08/30 17:53:28 hobbs Exp $ */ #include "tclWinInt.h" @@ -100,8 +100,8 @@ 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)); - /* * This structure describes the channel type structure for file based IO. */ @@ -784,9 +784,8 @@ TclpOpenFileChannel(interp, pathPtr, mode, permissions) { Tcl_Channel channel = 0; int channelPermissions; - DWORD accessMode, createMode, shareMode, flags, consoleParams, type; + DWORD accessMode, createMode, shareMode, flags; CONST TCHAR *nativeName; - DCB dcb; HANDLE handle; char channelName[16 + TCL_INTEGER_SPACE]; TclFile readFile = NULL; @@ -885,29 +884,9 @@ TclpOpenFileChannel(interp, pathPtr, mode, permissions) return NULL; } - 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 (type == FILE_TYPE_CHAR) { - if (GetConsoleMode(handle, &consoleParams)) { - type = FILE_TYPE_CONSOLE; - } else { - dcb.DCBlength = sizeof( DCB ) ; - if (GetCommState(handle, &dcb)) { - type = FILE_TYPE_SERIAL; - } - - } - } - channel = NULL; - switch (type) { + switch ( FileGetType(handle) ) { case FILE_TYPE_SERIAL: /* * Reopen channel for OVERLAPPED operation @@ -993,8 +972,6 @@ Tcl_MakeFileChannel(rawHandle, mode) Tcl_Channel channel = NULL; HANDLE handle = (HANDLE) rawHandle; HANDLE dupedHandle; - DCB dcb; - DWORD consoleParams, type; TclFile readFile = NULL; TclFile writeFile = NULL; BOOL result; @@ -1003,30 +980,7 @@ Tcl_MakeFileChannel(rawHandle, mode) return NULL; } - /* - * GetFileType() returns FILE_TYPE_UNKNOWN for invalid handles. - */ - - 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 (type == FILE_TYPE_CHAR) { - if (GetConsoleMode(handle, &consoleParams)) { - type = FILE_TYPE_CONSOLE; - } else { - dcb.DCBlength = sizeof( DCB ) ; - if (GetCommState(handle, &dcb)) { - type = FILE_TYPE_SERIAL; - } - } - } - - switch (type) + switch (FileGetType(handle)) { case FILE_TYPE_SERIAL: channel = TclWinOpenSerialChannel(handle, channelName, mode); @@ -1430,3 +1384,50 @@ FileThreadActionProc (instanceData, action) } } } + + +/* + *---------------------------------------------------------------------- + * + * FileGetType -- + * + * Given a file handle, return its type + * + * Results: + * None. + * + * Side effects: + * None. + * + *---------------------------------------------------------------------- + */ + +DWORD +FileGetType(handle) + 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 (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; + } + } + } + + return type; +} |