[dart:io] Namespaces for file IO

runtime/bin/directory_macos.cc

Index: runtime/bin/directory_macos.cc
diff --git a/runtime/bin/directory_macos.cc b/runtime/bin/directory_macos.cc
index 8fe39782773c602322282da81f8785737bc701be..5e5fd2a3a672a54b3c11726d419a186a440ecf72 100644
--- a/runtime/bin/directory_macos.cc
+++ b/runtime/bin/directory_macos.cc
@@ -16,6 +16,7 @@
 
 #include "bin/dartutils.h"
 #include "bin/file.h"
+#include "bin/namespace.h"
 #include "bin/platform.h"
 #include "platform/signal_blocker.h"
 
@@ -328,7 +329,7 @@ static bool DeleteRecursively(PathBuffer* path) {
   return false;
 }
 
-Directory::ExistsResult Directory::Exists(const char* dir_name) {
+Directory::ExistsResult Directory::Exists(Namespace* namespc, const char* dir_name) {
   struct stat entry_info;
   int success = NO_RETRY_EXPECTED(stat(dir_name, &entry_info));
   if (success == 0) {
@@ -358,31 +359,18 @@ char* Directory::CurrentNoScope() {
   return getcwd(NULL, 0);
 }
 
-const char* Directory::Current() {
-  char buffer[PATH_MAX];
-  if (getcwd(buffer, PATH_MAX) == NULL) {
-    return NULL;
-  }
-  return DartUtils::ScopedCopyCString(buffer);
-}
-
-bool Directory::SetCurrent(const char* path) {
-  int result = NO_RETRY_EXPECTED(chdir(path));
-  return (result == 0);
-}
-
-bool Directory::Create(const char* dir_name) {
+bool Directory::Create(Namespace* namespc, const char* dir_name) {
   // Create the directory with the permissions specified by the
   // process umask.
   int result = NO_RETRY_EXPECTED(mkdir(dir_name, 0777));
   // If the directory already exists, treat it as a success.
   if ((result == -1) && (errno == EEXIST)) {
-    return (Exists(dir_name) == EXISTS);
+    return (Exists(namespc, dir_name) == EXISTS);
   }
   return (result == 0);
 }
 
-const char* Directory::SystemTemp() {
+const char* Directory::SystemTemp(Namespace* namespc) {
   PathBuffer path;
   const char* temp_dir = getenv("TMPDIR");
   if (temp_dir == NULL) {
@@ -403,7 +391,7 @@ const char* Directory::SystemTemp() {
   return path.AsScopedString();
 }
 
-const char* Directory::CreateTemp(const char* prefix) {
+const char* Directory::CreateTemp(Namespace* namespc, const char* prefix) {
   // Returns a new, unused directory name, adding characters to the end
   // of prefix.  Creates the directory with the permissions specified
   // by the process umask.
@@ -426,10 +414,10 @@ const char* Directory::CreateTemp(const char* prefix) {
   return path.AsScopedString();
 }
 
-bool Directory::Delete(const char* dir_name, bool recursive) {
+bool Directory::Delete(Namespace* namespc, const char* dir_name, bool recursive) {
   if (!recursive) {
-    if ((File::GetType(dir_name, false) == File::kIsLink) &&
-        (File::GetType(dir_name, true) == File::kIsDirectory)) {
+    if ((File::GetType(namespc, dir_name, false) == File::kIsLink) &&
+        (File::GetType(namespc, dir_name, true) == File::kIsDirectory)) {
       return (NO_RETRY_EXPECTED(unlink(dir_name)) == 0);
     }
     return (NO_RETRY_EXPECTED(rmdir(dir_name)) == 0);
@@ -442,8 +430,8 @@ bool Directory::Delete(const char* dir_name, bool recursive) {
   }
 }
 
-bool Directory::Rename(const char* path, const char* new_path) {
-  ExistsResult exists = Exists(path);
+bool Directory::Rename(Namespace* namespc, const char* path, const char* new_path) {
+  ExistsResult exists = Exists(namespc, path);
   if (exists != EXISTS) {
     return false;
   }