merge revision(s) 58745,58780,59040,60743: [Backport #13863]

	rb_w32_ugetcwd: UTF-8 version getcwd

	* dir.c (rb_dir_getwd): convert from UTF-8.

	* win32/win32.c (w32_getcwd): codepage aware getcwd using
	  GetCurrentDirectoryW.
	potential memory leak

	* dir.c (rb_dir_getwd): get rid of potential memory leak.

	* util.c (ruby_getcwd): ditto.
	file.c: realpath in OS path encoding

	* dir.c (rb_dir_getwd_ospath): return cwd path in the OS path
	  encoding.

	* file.c (rb_realpath_internal): work in the OS path encoding
	load.c: cwd encoding

	* load.c (rb_get_expanded_load_path): save cwd cache in OS path
	  encoding, to get rid of unnecessary conversion and infinite
	  loading when it needs encoding conversion.
	  [ruby-dev:50221] [Bug #13863]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@62784 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 32 insertions, 5 deletions

diff --git a/dir.c b/dir.c
index 4a34fc9a73..b58990d6ad 100644
--- a/dir.c
+++ b/dir.c
@@ -74,6 +74,7 @@ char *strchr(char*,char);
 #define rmdir(p) rb_w32_urmdir(p)
 #undef opendir
 #define opendir(p) rb_w32_uopendir(p)
+#define ruby_getcwd() rb_w32_ugetcwd(NULL, 0)
 #define IS_WIN32 1
 #else
 #define IS_WIN32 0
@@ -1048,26 +1049,52 @@ dir_s_chdir(int argc, VALUE *argv, VALUE obj)
 }
 
 VALUE
-rb_dir_getwd(void)
+rb_dir_getwd_ospath(void)
 {
     char *path;
     VALUE cwd;
-    int fsenc = rb_enc_to_index(rb_filesystem_encoding());
+    VALUE path_guard;
 
-    if (fsenc == ENCINDEX_US_ASCII) fsenc = ENCINDEX_ASCII;
+#undef RUBY_UNTYPED_DATA_WARNING
+#define RUBY_UNTYPED_DATA_WARNING 0
+    path_guard = Data_Wrap_Struct((VALUE)0, NULL, RUBY_DEFAULT_FREE, NULL);
     path = my_getcwd();
-#ifdef __APPLE__
+    DATA_PTR(path_guard) = path;
+#ifdef _WIN32
+    cwd = rb_utf8_str_new_cstr(path);
+    OBJ_TAINT(cwd);
+#elif defined __APPLE__
     cwd = rb_str_normalize_ospath(path, strlen(path));
     OBJ_TAINT(cwd);
 #else
     cwd = rb_tainted_str_new2(path);
 #endif
-    rb_enc_associate_index(cwd, fsenc);
+    DATA_PTR(path_guard) = 0;
 
     xfree(path);
     return cwd;
 }
 
+VALUE
+rb_dir_getwd(void)
+{
+    rb_encoding *fs = rb_filesystem_encoding();
+    int fsenc = rb_enc_to_index(fs);
+    VALUE cwd = rb_dir_getwd_ospath();
+
+    switch (fsenc) {
+      case ENCINDEX_US_ASCII:
+	fsenc = ENCINDEX_ASCII;
+      case ENCINDEX_ASCII:
+	break;
+#if defined _WIN32 || defined __APPLE__
+      default:
+	return rb_str_conv_enc(cwd, NULL, fs);
+#endif
+    }
+    return rb_enc_associate_index(cwd, fsenc);
+}
+
 /*
  *  call-seq:
  *     Dir.getwd -> string