JS/base: provide implementation for mkdir (issue 22374)

4 files changed, 30 insertions, 1 deletions

diff --git a/libraries/base/jsbits/base.js b/libraries/base/jsbits/base.js
index b9e0b84ce1..1f0123943b 100644
--- a/libraries/base/jsbits/base.js
+++ b/libraries/base/jsbits/base.js
@@ -889,3 +889,21 @@ function h$__hscore_free_dirent(a,o) {
 function h$__hscore_d_name(a,o) {
   RETURN_UBX_TUP2(h$encodeModifiedUtf8(a.name),0);
 }
+
+function h$mkdir(path, path_offset, mode) {
+  if (!h$isNode()) {
+    throw "h$mkdir unsupported";
+  }
+  const d = h$decodeUtf8z(path, path_offset);
+  try {
+    h$fs.mkdirSync(d, {mode: mode});
+  } catch(e) {
+    // we can't directly set errno code, because numbers may not match
+    // e.g. e.errno is -17 for EEXIST while we would expect -20
+    // this is probably an inconsistency between nodejs using the native
+    // environment and everything else using Emscripten-provided headers.
+    h$setErrno(e);
+    return -1;
+  }
+  return 0;
+}
diff --git a/libraries/base/tests/IO/all.T b/libraries/base/tests/IO/all.T
index 92cb93add5..1a54564896 100644
--- a/libraries/base/tests/IO/all.T
+++ b/libraries/base/tests/IO/all.T
@@ -64,7 +64,7 @@ test('misc001', [extra_run_opts('misc001.hs misc001.out')], compile_and_run,
 
 test('openFile001',  normal, compile_and_run, [''])
 test('openFile002',  [exit_code(1), normalise_win32_io_errors], compile_and_run, [''])
-test('openFile003', [normalise_win32_io_errors, js_broken(22374)], compile_and_run, [''])
+test('openFile003', [normalise_win32_io_errors, js_broken(22362)], compile_and_run, [''])
 test('openFile004', [], compile_and_run, [''])
 test('openFile005', js_broken(22261), compile_and_run, [''])
 test('openFile006', [], compile_and_run, [''])
@@ -152,3 +152,5 @@ test('T17510', expect_broken(17510), compile_and_run, [''])
 test('bytestringread001', extra_run_opts('test.data'), compile_and_run, [''])
 test('T17912', [only_ways(['threaded1']), when(opsys('mingw32'),expect_broken(1))], compile_and_run, [''])
 test('T18832', only_ways(['threaded1']), compile_and_run, [''])
+
+test('mkdirExists', [exit_code(1), when(opsys('mingw32'), ignore_stderr)], compile_and_run, [''])
diff --git a/libraries/base/tests/IO/mkdirExists.hs b/libraries/base/tests/IO/mkdirExists.hs
new file mode 100644
index 0000000000..19f5e77f9b
--- /dev/null
+++ b/libraries/base/tests/IO/mkdirExists.hs
@@ -0,0 +1,8 @@
+module Main where
+
+import System.Directory
+
+main :: IO ()
+main = do
+  createDirectory "foo"
+  createDirectory "foo"
diff --git a/libraries/base/tests/IO/mkdirExists.stderr b/libraries/base/tests/IO/mkdirExists.stderr
new file mode 100644
index 0000000000..4d12490fa6
--- /dev/null
+++ b/libraries/base/tests/IO/mkdirExists.stderr
@@ -0,0 +1 @@
+mkdirExists: foo: createDirectory: already exists (File exists)