MSVC Support (#1199)

* fix stdalign and min/max for MSVC
* add missing ISREG and ISDIR for MSVC
* use MAX_PATH instead of PATH_MAX
* remove unecessary headers inclusion
* add MSVC CI
* add appropriate macros to platform detection
* re-add msvc CI artifacts
* upload the generated artifacts
* patch lua for MSVC CI builds
* update patch for MSVC compatibility

src/api/dirmonitor.c

@@ -1,8 +1,6 @@
 #include "api.h"
 #include <SDL.h>
 #include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
 #include <string.h>
 #include <stdbool.h>
 

src/api/dirmonitor/win32.c

@@ -40,8 +40,8 @@ void deinit_dirmonitor(struct dirmonitor_internal* monitor) {
 
 int translate_changes_dirmonitor(struct dirmonitor_internal* monitor, char* buffer, int buffer_size, int (*change_callback)(int, const char*, void*), void* data) {
   for (FILE_NOTIFY_INFORMATION* info = (FILE_NOTIFY_INFORMATION*)buffer; (char*)info < buffer + buffer_size; info = (FILE_NOTIFY_INFORMATION*)(((char*)info) + info->NextEntryOffset)) {
-    char transform_buffer[PATH_MAX*4];
-    int count = WideCharToMultiByte(CP_UTF8, 0, (WCHAR*)info->FileName, info->FileNameLength, transform_buffer, PATH_MAX*4 - 1, NULL, NULL);
+    char transform_buffer[MAX_PATH*4];
+    int count = WideCharToMultiByte(CP_UTF8, 0, (WCHAR*)info->FileName, info->FileNameLength, transform_buffer, MAX_PATH*4 - 1, NULL, NULL);
     change_callback(count, transform_buffer, data);
     if (!info->NextEntryOffset)
       break;

src/api/system.c

@@ -12,6 +12,20 @@
   #include <windows.h>
   #include <fileapi.h>
   #include "../utfconv.h"
+
+  // Windows does not define the S_ISREG and S_ISDIR macros in stat.h, so we do.
+  // We have to define _CRT_INTERNAL_NONSTDC_NAMES 1 before #including sys/stat.h
+  // in order for Microsoft's stat.h to define names like S_IFMT, S_IFREG, and S_IFDIR,
+  // rather than just defining  _S_IFMT, _S_IFREG, and _S_IFDIR as it normally does.
+  #define _CRT_INTERNAL_NONSTDC_NAMES 1
+  #include <sys/types.h>
+  #include <sys/stat.h>
+  #if !defined(S_ISREG) && defined(S_IFMT) && defined(S_IFREG)
+    #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
+  #endif
+  #if !defined(S_ISDIR) && defined(S_IFMT) && defined(S_IFDIR)
+    #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
+  #endif
 #else
 
 #include <dirent.h>