use different file name of BMap in PyBMap for different system

BMapBindings/PyBMap/.gitignore

@@ -1,6 +1,9 @@
 # my ban
 *.dll
 *.pdb
+*.so
+*.dylib
+*.bin
 testbench.py
 
 # Byte-compiled / optimized / DLL files

BMapBindings/PyBMap/PyBMap/bmap.py

@@ -1,4 +1,4 @@
-import ctypes, os
+import ctypes, os, sys
 
 #region Type Defines
 
@@ -67,10 +67,21 @@ bm_VxMatrix_p = ctypes.POINTER(bm_VxMatrix)
 
 #region BMap Loader
 
+_g_BMapLibName: str
+
+if sys.platform.startswith('win32') or sys.platform.startswith('cygwin'):
+    _g_BMapLibName = "BMap.dll"
+elif sys.platform.startswith('linux') or sys.platform.startswith('freebsd'):
+    _g_BMapLibName = "BMap.so"
+elif sys.platform.startswith('darwin'):
+    _g_BMapLibName = "BMap.dylib"
+else:
+    _g_BMapLibName = "BMap.bin"
+
 _g_BMapModule: ctypes.CDLL = None
 try:
     _g_BMapModule = ctypes.cdll.LoadLibrary(
-        os.path.join(os.path.dirname(__file__), "BMap.dll")
+        os.path.join(os.path.dirname(__file__), _g_BMapLibName)
     )
 except:
     _g_BMapModule = None

BMapBindings/PyBMap/README.md

@@ -3,4 +3,4 @@
 The real scripts are placed in sub PyBMap folder. This folder is served for testbench scripts placing.  
 Place any testbench files (e.g. `testbench.py`) in there what you want and don't sumbit them.  
 The native BMap library should be placed in sub PyBMap folder, and I have used gitignore file to filter them.  
-The native BMap library must be named as `BMap.dll` in any platforms (e.g. Linux, macOS). Do not change name to `BMap.so` or `BMap.dylib`.
+The native BMap library must be named as `BMap.dll` (in Windows), `BMap.so` (in Linux or BSD), or `BMap.dylib` (in macOS). If you still can not load BMap or your system is not listed above, you should name it as `BMap.bin`.

CodeGen/BMapBindings/snippets/header.py

@@ -1,4 +1,4 @@
-import ctypes, os
+import ctypes, os, sys
 
 #region Type Defines
 
@@ -67,10 +67,21 @@ bm_VxMatrix_p = ctypes.POINTER(bm_VxMatrix)
 
 #region BMap Loader
 
+_g_BMapLibName: str
+
+if sys.platform.startswith('win32') or sys.platform.startswith('cygwin'):
+    _g_BMapLibName = "BMap.dll"
+elif sys.platform.startswith('linux') or sys.platform.startswith('freebsd'):
+    _g_BMapLibName = "BMap.so"
+elif sys.platform.startswith('darwin'):
+    _g_BMapLibName = "BMap.dylib"
+else:
+    _g_BMapLibName = "BMap.bin"
+
 _g_BMapModule: ctypes.CDLL = None
 try:
     _g_BMapModule = ctypes.cdll.LoadLibrary(
-        os.path.join(os.path.dirname(__file__), "BMap.dll")
+        os.path.join(os.path.dirname(__file__), _g_BMapLibName)
     )
 except:
     _g_BMapModule = None