Win: make process.cwd and chdir support non-ansi characters

Closes GH-2215

src/node.cc

@@ -47,8 +47,6 @@
 #include <unistd.h> /* setuid, getuid */
 #else
 #include <direct.h>
-#define chdir _chdir
-#define getcwd _getcwd
 #include <process.h>
 #define getpid _getpid
 #include <io.h>
@@ -1231,10 +1229,10 @@ static Handle<Value> Chdir(const Arguments& args) {
 
   String::Utf8Value path(args[0]->ToString());
 
-  int r = chdir(*path);
+  uv_err_t r = uv_chdir(*path);
 
-  if (r != 0) {
+  if (r.code != UV_OK) {
-    return ThrowException(Exception::Error(String::New(strerror(errno))));
+    return ThrowException(UVException(r.code, "uv_chdir"));
   }
 
   return Undefined();
@@ -1243,18 +1241,25 @@ static Handle<Value> Chdir(const Arguments& args) {
 
 static Handle<Value> Cwd(const Arguments& args) {
   HandleScope scope;
+#ifdef _WIN32
+  /* MAX_PATH is in characters, not bytes. Make sure we have enough headroom. */
+  char buf[MAX_PATH * 4 + 1];
+#else
+  char buf[PATH_MAX + 1];
+#endif
 
-  char *r = getcwd(getbuf, ARRAY_SIZE(getbuf) - 1);
+  uv_err_t r = uv_cwd(buf, ARRAY_SIZE(buf) - 1);
-  if (r == NULL) {
+  if (r.code != UV_OK) {
-    return ThrowException(Exception::Error(String::New(strerror(errno))));
+    return ThrowException(UVException(r.code, "uv_cwd"));
   }
 
-  getbuf[ARRAY_SIZE(getbuf) - 1] = '\0';
+  buf[ARRAY_SIZE(buf) - 1] = '\0';
-  Local<String> cwd = String::New(r);
+  Local<String> cwd = String::New(buf);
 
   return scope.Close(cwd);
 }
 
+
 #ifdef _WIN32
 static Handle<Value> CwdForDrive(const Arguments& args) {
   HandleScope scope;

test/simple/test-chdir.js

@@ -21,9 +21,20 @@
 
 var common = require('../common');
 var assert = require('assert');
+var fs = require('fs');
+var path = require('path');
 
 assert.equal(true, process.cwd() !== __dirname);
 
 process.chdir(__dirname);
-
 assert.equal(true, process.cwd() === __dirname);
+
+var dir = path.resolve(common.fixturesDir,
+    'weird \uc3a4\uc3ab\uc3af characters \u00e1\u00e2\u00e3');
+fs.mkdirSync(dir);
+process.chdir(dir);
+assert(process.cwd() == dir);
+
+process.chdir('..');
+assert(process.cwd() == path.resolve(common.fixturesDir));
+fs.rmdirSync(dir);