uv_cwd + uv_chdir

include/uv.h

@@ -1213,6 +1213,12 @@ UV_EXTERN int uv_ip6_name(struct sockaddr_in6* src, char* dst, size_t size);
 /* Gets the executable path */
 UV_EXTERN int uv_exepath(char* buffer, size_t* size);
 
+/* Gets the current working directory */
+UV_EXTERN uv_err_t uv_cwd(char* buffer, size_t size);
+
+/* Changes the current working directory */
+UV_EXTERN uv_err_t uv_chdir(const char* dir);
+
 /* Gets memory info in bytes */
 UV_EXTERN uint64_t uv_get_free_memory(void);
 UV_EXTERN uint64_t uv_get_total_memory(void);

src/unix/core.c

@@ -845,3 +845,25 @@ size_t uv__strlcpy(char* dst, const char* src, size_t size) {
 
   return src - org;
 }
+
+
+uv_err_t uv_cwd(char* buffer, size_t size) {
+  if (!buffer || !size) {
+    return uv__new_artificial_error(UV_EINVAL);
+  }
+
+  if (getcwd(buffer, size)) {
+    return uv_ok_;
+  } else {
+    return uv__new_sys_error(errno);
+  }
+}
+
+
+uv_err_t uv_chdir(const char* dir) {
+  if (chdir(dir) == 0) {
+    return uv_ok_;
+  } else {
+    return uv__new_sys_error(errno);
+  }
+}

src/win/util.c

@@ -20,6 +20,7 @@
  */
 
 #include <assert.h>
+#include <direct.h>
 #include <malloc.h>
 #include <string.h>
 
@@ -97,6 +98,91 @@ done:
 }
 
 
+uv_err_t uv_cwd(char* buffer, size_t size) {
+  uv_err_t err;
+  size_t utf8Size;
+  wchar_t* utf16Buffer = NULL;
+
+  if (!buffer || !size) {
+    err.code = UV_EINVAL;
+    goto done;
+  }
+
+  utf16Buffer = (wchar_t*)malloc(sizeof(wchar_t) * size);
+  if (!utf16Buffer) {
+    err.code = UV_ENOMEM;
+    goto done;
+  }
+
+  if (!_wgetcwd(utf16Buffer, size - 1)) {
+    err = uv__new_sys_error(_doserrno);
+    goto done;
+  }
+
+  utf16Buffer[size - 1] = L'\0';
+
+  /* Convert to UTF-8 */
+  utf8Size = uv_utf16_to_utf8(utf16Buffer, -1, buffer, size);
+  if (utf8Size == 0) {
+    err = uv__new_sys_error(GetLastError());
+    goto done;
+  }
+
+  buffer[utf8Size] = '\0';
+  err = uv_ok_;
+
+done:
+  if (utf16Buffer) {
+    free(utf16Buffer);
+  }
+
+  return err;
+}
+
+
+uv_err_t uv_chdir(const char* dir) {
+  uv_err_t err;
+  wchar_t* utf16Buffer = NULL;
+  size_t utf16Size;
+
+  if (!dir) {
+    err.code = UV_EINVAL;
+    goto done;
+  }
+
+  utf16Size = uv_utf8_to_utf16(dir, NULL, 0);
+  if (!utf16Size) {
+    err = uv__new_sys_error(GetLastError());
+    goto done;
+  }
+
+  utf16Buffer = (wchar_t*)malloc(sizeof(wchar_t) * utf16Size);
+  if (!utf16Buffer) {
+    err.code = UV_ENOMEM;
+    goto done;
+  }
+
+  if (!uv_utf8_to_utf16(dir, utf16Buffer, utf16Size)) {
+    err = uv__new_sys_error(GetLastError());
+    goto done;
+  }
+
+  if (_wchdir(utf16Buffer) == -1) {
+    err = uv__new_sys_error(_doserrno);
+    goto done;
+  }
+
+  err = uv_ok_;
+
+done:
+  if (utf16Buffer) {
+    free(utf16Buffer);
+  }
+
+  return err;
+}
+
+
 void uv_loadavg(double avg[3]) {
   /* Can't be implemented */
   avg[0] = avg[1] = avg[2] = 0;

test/test-cwd-and-chdir.c

@@ -0,0 +1,61 @@
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "uv.h"
+#include "task.h"
+#include <string.h>
+
+#define PATHMAX 1024
+extern char executable_path[];
+
+TEST_IMPL(cwd_and_chdir) {
+  char buffer_orig[PATHMAX];
+  char buffer_new[PATHMAX];
+  size_t size;
+  char* last_slash;
+  uv_err_t err;
+
+  size = sizeof(buffer_orig) / sizeof(buffer_orig[0]);
+  err = uv_cwd(buffer_orig, size);
+  ASSERT(err.code == UV_OK);
+
+  last_slash = strrchr(buffer_orig,
+#ifdef _WIN32
+          '\\'
+#else
+          '/'
+#endif
+  );
+
+  ASSERT(last_slash);
+
+  *last_slash = '\0';
+
+  err = uv_chdir(buffer_orig);
+  ASSERT(err.code == UV_OK);
+
+  err = uv_cwd(buffer_new, size);
+  ASSERT(err.code == UV_OK);
+
+  ASSERT(strcmp(buffer_orig, buffer_new) == 0);
+
+  return 0;
+}

test/test-list.h

@@ -77,6 +77,7 @@ TEST_DECLARE   (check_ref)
 TEST_DECLARE   (unref_in_prepare_cb)
 TEST_DECLARE   (async)
 TEST_DECLARE   (get_currentexe)
+TEST_DECLARE   (cwd_and_chdir)
 TEST_DECLARE   (get_memory)
 TEST_DECLARE   (hrtime)
 TEST_DECLARE   (getaddrinfo_basic)
@@ -216,6 +217,8 @@ TASK_LIST_START
 
   TEST_ENTRY  (get_currentexe)
 
+  TEST_ENTRY  (cwd_and_chdir)
+
   TEST_ENTRY  (get_memory)
 
   TEST_ENTRY  (get_loadavg)

uv.gyp

@@ -278,6 +278,7 @@
         'test/test-error.c',
         'test/test-callback-stack.c',
         'test/test-connection-fail.c',
+        'test/test-cwd-and-chdir.c',
         'test/test-delayed-accept.c',
         'test/test-fail-always.c',
         'test/test-fs.c',