windows: import tronkko's dirent.h

Win32 compatible version of dirent.h microsoft just don't seem to be
able to include themselves.

MIT license, same as lws, link to original github project in the header

CMakeLists.txt

@@ -129,7 +129,7 @@ option(LWS_WITH_STRUCT_JSON "Generic struct serialization to and from JSON" OFF)
 option(LWS_WITH_STRUCT_SQLITE3 "Generic struct serialization to and from SQLITE3" OFF)
 # broken atm
 #option(LWS_WITH_SMTP "Provide SMTP support" OFF)
-if (WIN32 OR LWS_WITH_ESP32)
+if (LWS_WITH_ESP32)
 option(LWS_WITH_DIR "Directory scanning api support" OFF)
 option(LWS_WITH_LEJP_CONF "With LEJP configuration parser as used by lwsws" OFF)
 else()
@@ -151,7 +151,6 @@ option(LWS_WITH_LWSAC "lwsac Chunk Allocation api" ON)
 option(LWS_WITH_CUSTOM_HEADERS "Store and allow querying custom HTTP headers (H1 only)" ON)
 option(LWS_WITH_DISKCACHE "Hashed cache directory with lazy LRU deletion to size limit" OFF)
 option(LWS_WITH_ASAN "Build with gcc runtime sanitizer options enabled (needs libasan)" OFF)
-option(LWS_WITH_DIR "Directory scanning api support" OFF)
 option(LWS_WITH_LEJP_CONF "With LEJP configuration parser as used by lwsws" OFF)
 option(LWS_WITH_ZLIB "Include zlib support (required for extensions)" OFF)
 option(LWS_WITH_BUNDLED_ZLIB "Use bundled zlib version (Windows only)" ${LWS_WITH_BUNDLED_ZLIB_DEFAULT})
@@ -192,7 +191,7 @@ if (LWS_PLAT_FREERTOS OR LWS_PLAT_OPTEE)
 	set(LWS_WITH_UDP 0)
 endif()
 
-if (WIN32 OR LWS_PLAT_FREERTOS)
+if (LWS_PLAT_FREERTOS)
 	message(STATUS "No LWS_WITH_DIR or LWS_WITH_LEJP_CONF")
 	set(LWS_WITH_DIR OFF)
 	set(LWS_WITH_LEJP_CONF OFF)

lib/misc/dir.c

@@ -78,9 +78,13 @@ bail:
 
 #else
 
-#if !defined(_WIN32) && !defined(LWS_PLAT_FREERTOS)
+#if !defined(LWS_PLAT_FREERTOS)
 
+#if defined(WIN32)
+#include "../../win32port/dirent/dirent-win32.h"
+#else
 #include <dirent.h>
+#endif
 
 static int filter(const struct dirent *ent)
 {
@@ -153,15 +157,19 @@ lws_dir(const char *dirpath, void *user, lws_dir_callback_function cb)
 		case DT_FIFO:
 			lde.type = LDOT_FIFO;
 			break;
+#if !defined(WIN32)
 		case DT_LNK:
 			lde.type = LDOT_LINK;
 			break;
+#endif
 		case DT_REG:
 			lde.type = LDOT_FILE;
 			break;
+#if !defined(WIN32)
 		case DT_SOCK:
 			lde.type = LDOTT_SOCKET;
 			break;
+#endif
 		default:
 			lde.type = LDOT_UNKNOWN;
 			break;
@@ -183,8 +191,5 @@ bail:
 
 	return ret;
 }
-
-#else
-#error "If you want lws_dir on windows, you need libuv"
 #endif
 #endif