[dart:io] Namespaces for file IO

runtime/bin/directory_macos.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "platform/globals.h"
 #if defined(HOST_OS_MACOS)
 
 #include "bin/directory.h"
 
 #include <dirent.h>     // NOLINT
 #include <errno.h>      // NOLINT
 #include <string.h>     // NOLINT
 #include <sys/param.h>  // NOLINT
 #include <sys/stat.h>   // NOLINT
 #include <unistd.h>     // NOLINT
 
 #include "bin/dartutils.h"
 #include "bin/file.h"
+#include "bin/namespace.h"
 #include "bin/platform.h"
 #include "platform/signal_blocker.h"
 
 namespace dart {
 namespace bin {
 
 PathBuffer::PathBuffer() : length_(0) {
   data_ = calloc(PATH_MAX + 1, sizeof(char));  // NOLINT
 }
 
@@ skipping 292 matching lines @@
     path->Reset(path_length);
   }
   // Only happens if an error.
   ASSERT(errno != 0);
   int err = errno;
   VOID_NO_RETRY_EXPECTED(closedir(dir_pointer));
   errno = err;
   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) {
     if (S_ISDIR(entry_info.st_mode)) {
       return EXISTS;
     } else {
       // An OSError may be constructed based on the return value of this
       // function, so set errno to something that makes sense.
       errno = ENOTDIR;
       return DOES_NOT_EXIST;
     }
   } else {
     if ((errno == EACCES) || (errno == EBADF) || (errno == EFAULT) ||
         (errno == ENOMEM) || (errno == EOVERFLOW)) {
       // Search permissions denied for one of the directories in the
       // path or a low level error occured. We do not know if the
       // directory exists.
       return UNKNOWN;
     }
     ASSERT((errno == ELOOP) || (errno == ENAMETOOLONG) || (errno == ENOENT) ||
            (errno == ENOTDIR));
     return DOES_NOT_EXIST;
   }
 }
 
 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) {
     temp_dir = getenv("TMP");
   }
   if (temp_dir == NULL) {
     temp_dir = "/tmp";
   }
   if (!path.Add(temp_dir)) {
     return NULL;
   }
   // Remove any trailing slash.
   char* result = path.AsString();
   int length = strlen(result);
   if ((length > 1) && (result[length - 1] == '/')) {
     result[length - 1] = '\0';
   }
   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.
   // The return value is Dart_ScopeAllocated.
   PathBuffer path;
   if (!path.Add(prefix)) {
     return NULL;
   }
   if (!path.Add("XXXXXX")) {
     // Pattern has overflowed.
     return NULL;
   }
   char* result;
   do {
     result = mkdtemp(path.AsString());
   } while ((result == NULL) && (errno == EINTR));
   if (result == NULL) {
     return NULL;
   }
   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);
   } else {
     PathBuffer path;
     if (!path.Add(dir_name)) {
       return false;
     }
     return DeleteRecursively(&path);
   }
 }
 
-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;
   }
   return (NO_RETRY_EXPECTED(rename(path, new_path)) == 0);
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(HOST_OS_MACOS)