feat: Added Unified file system / default layout mounts.

vfs.odin

@@ -0,0 +1,80 @@
+package main
+
+import "core:fmt"
+import "core:os"
+
+// Virtual File System Entry
+VFS_Entry :: struct {
+	fs_path: string,
+	data:    []byte,
+}
+
+// Virtual File System
+VFS :: struct {
+	files: map[string]VFS_Entry,
+}
+
+build_vfs :: proc(site: ^Site) {
+	site.vfs.files = make(map[string]VFS_Entry, site_allocator(site))
+
+	mount_dir(&site.vfs, fmt.tprintf("%s/layouts", DEFAULTS_PATH), "layouts")
+
+	for i := len(site.modules) - 1; i >= 0; i -= 1 {
+		module := site.modules[i]
+		mount_subdir(&site.vfs, module, "layouts")
+		mount_subdir(&site.vfs, module, "assets")
+	}
+
+	mount_dir(&site.vfs, site.layouts_dir, "layouts")
+	mount_dir(&site.vfs, site.assets_dir, "assets")
+}
+
+mount_subdir :: proc(vfs: ^VFS, module_dir: string, target: string) {
+	source := fmt.tprintf("%s/%s", module_dir, target)
+	mount_dir(vfs, source, target)
+}
+
+mount_dir :: proc(vfs: ^VFS, source_dir: string, target: string) {
+	if !os.exists(source_dir) {
+		return
+	}
+	mount_recursive(vfs, source_dir, target)
+}
+
+mount_recursive :: proc(vfs: ^VFS, current_dir: string, target_prefix: string) {
+	entries, err := os.read_all_directory_by_path(current_dir, context.allocator)
+	if err != nil {
+		return
+	}
+	defer os.file_info_slice_delete(entries, context.allocator)
+
+	for entry in entries {
+		#partial switch entry.type {
+		case .Regular:
+			virtual := fmt.tprintf("%s/%s", target_prefix, entry.name)
+			vfs.files[virtual] = VFS_Entry {
+				fs_path = entry.fullpath,
+			}
+		case .Directory:
+			sub_prefix := fmt.tprintf("%s/%s", target_prefix, entry.name)
+			mount_recursive(vfs, entry.fullpath, sub_prefix)
+		case:
+		}
+	}
+}
+
+vfs_get :: proc(vfs: ^VFS, virtual_path: string) -> ([]byte, bool) {
+	entry, ok := vfs.files[virtual_path]
+	if !ok {
+		return nil, false
+	}
+	if entry.data != nil {
+		return entry.data, true
+	}
+	data, err := os.read_entire_file_from_path(entry.fs_path, context.allocator)
+	if err != nil {
+		return nil, false
+	}
+	return data, true
+}
+