Merge pull request #4877 from laytan/os2-additions

os/os2: recursive directory walker, expose errors in read_directory, file clone

tests/core/os/os2/dir.odin

@@ -5,6 +5,7 @@ import    "core:log"
 import    "core:path/filepath"
 import    "core:slice"
 import    "core:testing"
+import    "core:strings"
 
 @(test)
 test_read_dir :: proc(t: ^testing.T) {
@@ -30,3 +31,76 @@ test_read_dir :: proc(t: ^testing.T) {
 	testing.expect_value(t, fis[1].name, "sub")
 	testing.expect_value(t, fis[1].type, os.File_Type.Directory)
 }
+
+@(test)
+test_walker :: proc(t: ^testing.T) {
+	path := filepath.join({#directory, "../dir"})
+	defer delete(path)
+
+	w := os.walker_create(path)
+	defer os.walker_destroy(&w)
+
+	test_walker_internal(t, &w)
+}
+
+@(test)
+test_walker_file :: proc(t: ^testing.T) {
+	path := filepath.join({#directory, "../dir"})
+	defer delete(path)
+
+	f, err := os.open(path)
+	testing.expect_value(t, err, nil)
+	defer os.close(f)
+
+	w := os.walker_create(f)
+	defer os.walker_destroy(&w)
+
+	test_walker_internal(t, &w)
+}
+
+test_walker_internal :: proc(t: ^testing.T, w: ^os.Walker) {
+	Seen :: struct {
+		type: os.File_Type,
+		path: string,
+	}
+
+	expected := [?]Seen{
+		{.Regular,   filepath.join({"dir", "b.txt"})},
+		{.Directory, filepath.join({"dir", "sub"})},
+		{.Regular,   filepath.join({"dir", "sub", ".gitkeep"})},
+	}
+
+	seen: [dynamic]Seen
+	defer delete(seen)
+
+	for info in os.walker_walk(w) {
+
+		errpath, err := os.walker_error(w)
+		testing.expectf(t, err == nil, "walker error for %q: %v", errpath, err)
+
+		append(&seen, Seen{
+			info.type,
+			strings.clone(info.fullpath),
+		})
+	}
+
+	if _, err := os.walker_error(w); err == .Unsupported {
+		log.warn("os2 directory functionality is unsupported, skipping test")
+		return
+	}
+
+	testing.expect_value(t, len(seen), len(expected))
+
+	for expectation in expected {
+		found: bool
+		for entry in seen {
+			if strings.has_suffix(entry.path, expectation.path) {
+				found = true
+				testing.expect_value(t, entry.type, expectation.type)
+				delete(entry.path)
+			}
+		}
+		testing.expectf(t, found, "%q not found in %v", expectation, seen)
+		delete(expectation.path)
+	}
+} 

tests/core/os/os2/file.odin

@@ -0,0 +1,31 @@
+package tests_core_os_os2
+
+import os "core:os/os2"
+import    "core:testing"
+import    "core:path/filepath"
+
+@(test)
+test_clone :: proc(t: ^testing.T) {
+	f, err := os.open(filepath.join({#directory, "file.odin"}, context.temp_allocator))
+	testing.expect_value(t, err, nil)
+	testing.expect(t, f != nil)
+
+	clone: ^os.File
+	clone, err = os.clone(f)
+	testing.expect_value(t, err, nil)
+	testing.expect(t, clone != nil)
+
+	testing.expect_value(t, os.name(clone), os.name(f))
+	testing.expect(t, os.fd(clone) != os.fd(f))
+
+	os.close(f)
+
+	buf: [128]byte
+	n: int
+	n, err = os.read(clone, buf[:])
+	testing.expect_value(t, err, nil)
+	testing.expect(t, n > 13)
+	testing.expect_value(t, string(buf[:13]), "package tests")
+
+	os.close(clone)
+}