Added image loading

Added some string functions and macros
Added path listing on windows
Added assets

code/os/filesystem.h

@@ -13,4 +13,33 @@ function void      FS_FileClose(OS_Handle file);
 function void FS_FileRead(OS_Handle file, void *ptr, U64 size, U64 offset);
 function void FS_FileWrite(OS_Handle file, void *ptr, U64 size, U64 offset);
 
+typedef U32 FS_EntryType;
+enum {
+	FS_ENTRY_TYPE_FILE = 0,
+	FS_ENTRY_TYPE_DIR
+};
+
+typedef struct FS_Entry FS_Entry;
+struct FS_Entry {
+	FS_Entry *next;
+
+	FS_EntryType type;
+
+	Str8 path;
+	Str8 basename;
+
+	U64 time;
+	U64 size;
+};
+
+typedef struct FS_List FS_List;
+struct FS_List {
+	FS_Entry *first;
+	FS_Entry *last;
+
+	U32 count;
+};
+
+function FS_List FS_PathList(M_Arena *arena, Str8 path);
+
 #endif  // LD_OS_FILESYSTEM_H_

code/os/impl/windows/core.c

@@ -14,6 +14,19 @@ internal Str8 Win32_WideStr(M_Arena *arena, Str8 v) {
 	return result;
 }
 
+internal Str8 Win32_MultiByteStr(M_Arena *arena, LPWSTR wstr) {
+	Str8 result = { 0 };
+
+	S32 nbytes = WideCharToMultiByte(CP_UTF8, 0, wstr, -1, 0, 0, 0, 0);
+
+	result.count = nbytes - 1;
+	result.data  = M_ArenaPush(arena, U8, .count = nbytes);
+
+	WideCharToMultiByte(CP_UTF8, 0, wstr, -1, (LPSTR) result.data, nbytes, 0, 0);
+
+	return result;
+}
+
 // Virtual memory
 
 U64 VM_PageSize() {

code/os/impl/windows/filesystem.c

@@ -83,4 +83,39 @@ void FS_FileWrite(OS_Handle file, void *ptr, U64 size, U64 offset) {
 	}
 }
 
+FS_List FS_PathList(M_Arena *arena, Str8 path) {
+	FS_List result = { 0 };
 
+	M_TempScope(1, &arena) {
+		Str8 wpath = Win32_WideStr(temp.arena, Sf(temp.arena, "%.*s\\*", Sv(path)));
+
+		WIN32_FIND_DATAW find = { 0 };
+		HANDLE hFind = FindFirstFileW((LPCWSTR) wpath.data, &find);
+
+		while (hFind != INVALID_HANDLE_VALUE) {
+			if (find.cFileName[0] != L'.') {
+				FS_Entry *entry = M_ArenaPush(arena, FS_Entry);
+
+				entry->type = (find.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? FS_ENTRY_TYPE_DIR : FS_ENTRY_TYPE_FILE;
+
+				entry->basename = Win32_MultiByteStr(arena, find.cFileName);
+				entry->path     = Sf(arena, "%.*s/%.*s", Sv(path), Sv(entry->basename));
+
+				FILETIME *wt = &find.ftLastWriteTime;
+
+				entry->time = ((U64) wt->dwHighDateTime << 32) | ((U64) wt->dwLowDateTime);
+				entry->size = ((U64) find.nFileSizeHigh << 32) | ((U64) find.nFileSizeLow);
+
+				SLL_Enqueue(result.first, result.last, entry);
+
+				result.count += 1;
+			}
+
+			if (!FindNextFileW(hFind, &find)) {
+				break;
+			}
+		}
+	}
+
+	return result;
+}