From c94c7e03ecc4666f31df363c2f728acd5007a2b5 Mon Sep 17 00:00:00 2001
From: "jan.nijtmans" <nijtmans@users.sourceforge.net>
Date: Wed, 6 Jun 2012 12:43:57 +0000
Subject: On Cygwin, use win32 API in stead of uname() to determine the
 tcl_platform variables

---
 ChangeLog            |  5 ++++
 generic/tcl.decls    |  6 ++---
 generic/tclInt.decls |  4 +--
 unix/tclUnixInit.c   | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++--
 4 files changed, 79 insertions(+), 7 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index c91a822..0bb1715 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2012-06-06  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* unix/tclUnixInit.c: On Cygwin, use win32 API in stead of uname()
+	to determine the tcl_platform variables.
+
 2012-05-25  Jan Nijtmans  <nijtmans@users.sf.net>
 
 	* win/tclWinDde.c:    [Bug 473946]: special characters not correctly sent,
diff --git a/generic/tcl.decls b/generic/tcl.decls
index db9950c..d4651c6 100644
--- a/generic/tcl.decls
+++ b/generic/tcl.decls
@@ -1822,12 +1822,12 @@ declare 1 win {
 # Mac declarations
 
 # This is needed by the shells to handle Macintosh events.
- 
+
 declare 0 mac {
     void Tcl_MacSetEventProc(Tcl_MacConvertEventPtr procPtr)
 }
 
-# These routines are useful for handling using scripts from resources 
+# These routines are useful for handling using scripts from resources
 # in the application shell
 
 declare 1 mac {
@@ -1859,7 +1859,7 @@ declare 6 mac {
 
 # These are not in MSL 2.1.2, so we need to export them from the
 # Tcl shared library.  They are found in the compat directory.
- 
+
 declare 7 mac {
     int strncasecmp(const char *s1, const char *s2, size_t n)
 }
diff --git a/generic/tclInt.decls b/generic/tclInt.decls
index d714e85..1366fc3 100644
--- a/generic/tclInt.decls
+++ b/generic/tclInt.decls
@@ -799,10 +799,10 @@ declare 19 mac {
 declare 20 mac {
     int TclMacRegisterResourceFork(short fileRef, Tcl_Obj *tokenPtr,
 	    int insert)
-}	
+}
 declare 21 mac {
     short TclMacUnRegisterResourceFork(char *tokenPtr, Tcl_Obj *resultPtr)
-}	
+}
 declare 22 mac {
     int TclMacCreateEnv(void)
 }
diff --git a/unix/tclUnixInit.c b/unix/tclUnixInit.c
index 46ef042..5de9e48 100644
--- a/unix/tclUnixInit.c
+++ b/unix/tclUnixInit.c
@@ -34,6 +34,51 @@
 #   endif
 #endif
 
+#ifdef __CYGWIN__
+DLLIMPORT extern __stdcall unsigned char GetVersionExA(void *);
+DLLIMPORT extern __stdcall void GetSystemInfo(void *);
+
+#define NUMPLATFORMS 4
+static const char *const platforms[NUMPLATFORMS] = {
+    "Win32s", "Windows 95", "Windows NT", "Windows CE"
+};
+
+#define NUMPROCESSORS 11
+static const char *const  processors[NUMPROCESSORS] = {
+    "intel", "mips", "alpha", "ppc", "shx", "arm", "ia64", "alpha64", "msil",
+    "amd64", "ia32_on_win64"
+};
+
+typedef struct _SYSTEM_INFO {
+  union {
+    DWORD  dwOemId;
+    struct {
+      int wProcessorArchitecture;
+      int wReserved;
+    };
+  };
+  DWORD     dwPageSize;
+  void *lpMinimumApplicationAddress;
+  void *lpMaximumApplicationAddress;
+  void *dwActiveProcessorMask;
+  DWORD     dwNumberOfProcessors;
+  DWORD     dwProcessorType;
+  DWORD     dwAllocationGranularity;
+  int      wProcessorLevel;
+  int      wProcessorRevision;
+} SYSTEM_INFO;
+
+typedef struct _OSVERSIONINFOA {
+  DWORD dwOSVersionInfoSize;
+  DWORD dwMajorVersion;
+  DWORD dwMinorVersion;
+  DWORD dwBuildNumber;
+  DWORD dwPlatformId;
+  char szCSDVersion[128];
+} OSVERSIONINFOA;
+#endif
+
+
 /*
  * The Init script (common to Windows and Unix platforms) is
  * defined in tkInitScript.h
@@ -774,7 +819,11 @@ void
 TclpSetVariables(interp)
     Tcl_Interp *interp;
 {
-#ifndef NO_UNAME
+#ifdef __CYGWIN__
+    SYSTEM_INFO sysInfo;
+    OSVERSIONINFOA osInfo;
+    char buffer[TCL_INTEGER_SPACE * 2];
+#elif !defined(NO_UNAME)
     struct utsname name;
 #endif
     int unameOK;
@@ -876,7 +925,25 @@ TclpSetVariables(interp)
     Tcl_SetVar2(interp, "tcl_platform", "platform", "unix", TCL_GLOBAL_ONLY);
 #endif
     unameOK = 0;
-#ifndef NO_UNAME
+#ifdef __CYGWIN__
+	unameOK = 1;
+    osInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFOA);
+    GetVersionExA(&osInfo);
+    GetSystemInfo(&sysInfo);
+
+    if (osInfo.dwPlatformId < NUMPLATFORMS) {
+	Tcl_SetVar2(interp, "tcl_platform", "os",
+		platforms[osInfo.dwPlatformId], TCL_GLOBAL_ONLY);
+    }
+    sprintf(buffer, "%d.%d", osInfo.dwMajorVersion, osInfo.dwMinorVersion);
+    Tcl_SetVar2(interp, "tcl_platform", "osVersion", buffer, TCL_GLOBAL_ONLY);
+    if (sysInfo.wProcessorArchitecture < NUMPROCESSORS) {
+	Tcl_SetVar2(interp, "tcl_platform", "machine",
+		processors[sysInfo.wProcessorArchitecture],
+		TCL_GLOBAL_ONLY);
+    }
+
+#elif !defined NO_UNAME
     if (uname(&name) >= 0) {
 	CONST char *native;
 	
-- 
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