VM: Re-format to use at most one newline between functions

runtime/bin/directory_linux.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_LINUX)
 
 #include "bin/directory.h"
 
 #include <dirent.h>     // NOLINT
 #include <errno.h>      // NOLINT
 #include <stdlib.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/platform.h"
 #include "platform/signal_blocker.h"
 
 namespace dart {
 namespace bin {
 
 PathBuffer::PathBuffer() : length_(0) {
   data_ = calloc(PATH_MAX + 1, sizeof(char));  // NOLINT
 }
 
-
 PathBuffer::~PathBuffer() {
   free(data_);
 }
 
-
 bool PathBuffer::AddW(const wchar_t* name) {
   UNREACHABLE();
   return false;
 }
 
-
 char* PathBuffer::AsString() const {
   return reinterpret_cast<char*>(data_);
 }
 
-
 wchar_t* PathBuffer::AsStringW() const {
   UNREACHABLE();
   return NULL;
 }
 
-
 const char* PathBuffer::AsScopedString() const {
   return DartUtils::ScopedCopyCString(AsString());
 }
 
-
 bool PathBuffer::Add(const char* name) {
   char* data = AsString();
   int written = snprintf(data + length_, PATH_MAX - length_, "%s", name);
   data[PATH_MAX] = '\0';
   if ((written <= PATH_MAX - length_) && (written >= 0) &&
       (static_cast<size_t>(written) == strnlen(name, PATH_MAX + 1))) {
     length_ += written;
     return true;
   } else {
     errno = ENAMETOOLONG;
     return false;
   }
 }
 
-
 void PathBuffer::Reset(intptr_t new_length) {
   length_ = new_length;
   AsString()[length_] = '\0';
 }
 
-
 // A linked list of symbolic links, with their unique file system identifiers.
 // These are scanned to detect loops while doing a recursive directory listing.
 struct LinkList {
   dev_t dev;
   ino64_t ino;
   LinkList* next;
 };
 
-
 ListType DirectoryListingEntry::Next(DirectoryListing* listing) {
   if (done_) {
     return kListDone;
   }
 
   if (lister_ == 0) {
     do {
       lister_ = reinterpret_cast<intptr_t>(
           opendir(listing->path_buffer().AsString()));
     } while ((lister_ == 0) && (errno == EINTR));
@@ skipping 109 matching lines @@
   }
   done_ = true;
 
   if (errno != 0) {
     return kListError;
   }
 
   return kListDone;
 }
 
-
 DirectoryListingEntry::~DirectoryListingEntry() {
   ResetLink();
   if (lister_ != 0) {
     VOID_NO_RETRY_EXPECTED(closedir(reinterpret_cast<DIR*>(lister_)));
   }
 }
 
-
 void DirectoryListingEntry::ResetLink() {
   if ((link_ != NULL) && ((parent_ == NULL) || (parent_->link_ != link_))) {
     delete link_;
     link_ = NULL;
   }
   if (parent_ != NULL) {
     link_ = parent_->link_;
   }
 }
 
-
 static bool DeleteRecursively(PathBuffer* path);
 
-
 static bool DeleteFile(char* file_name, PathBuffer* path) {
   return path->Add(file_name) &&
          (NO_RETRY_EXPECTED(unlink(path->AsString())) == 0);
 }
 
-
 static bool DeleteDir(char* dir_name, PathBuffer* path) {
   if ((strcmp(dir_name, ".") == 0) || (strcmp(dir_name, "..") == 0)) {
     return true;
   }
   return path->Add(dir_name) && DeleteRecursively(path);
 }
 
-
 static bool DeleteRecursively(PathBuffer* path) {
   // Do not recurse into links for deletion. Instead delete the link.
   // If it's a file, delete it.
   struct stat64 st;
   if (TEMP_FAILURE_RETRY(lstat64(path->AsString(), &st)) == -1) {
     return false;
   } else if (!S_ISDIR(st.st_mode)) {
     return (NO_RETRY_EXPECTED(unlink(path->AsString())) == 0);
   }
 
@@ skipping 81 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) {
   struct stat64 entry_info;
   int success = TEMP_FAILURE_RETRY(stat64(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) {
   return (NO_RETRY_EXPECTED(chdir(path)) == 0);
 }
 
-
 bool Directory::Create(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 (result == 0);
 }
 
-
 const char* Directory::SystemTemp() {
   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) {
   // 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) {
   if (!recursive) {
     if ((File::GetType(dir_name, false) == File::kIsLink) &&
         (File::GetType(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);
   if (exists != EXISTS) {
     return false;
   }
   return (NO_RETRY_EXPECTED(rename(path, new_path)) == 0);
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(HOST_OS_LINUX)