| // Protocol Buffers - Google's data interchange format |
| // Copyright 2008 Google Inc. All rights reserved. |
| // |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file or at |
| // https://developers.google.com/open-source/licenses/bsd |
| |
| // Author: kenton@google.com (Kenton Varda) |
| // emulates google3/file/base/file.cc |
| |
| #include "google/protobuf/testing/file.h" |
| |
| #include <stdio.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #ifdef _MSC_VER |
| #define WIN32_LEAN_AND_MEAN // yeah, right |
| #include <windows.h> // Find*File(). :( |
| // #include <direct.h> |
| #else |
| #include <dirent.h> |
| #include <unistd.h> |
| #endif |
| #include <errno.h> |
| |
| #include "absl/log/absl_check.h" |
| #include "absl/log/absl_log.h" |
| #include "absl/strings/str_cat.h" |
| #include "absl/strings/string_view.h" |
| #include "google/protobuf/io/io_win32.h" |
| #include "google/protobuf/stubs/status_macros.h" |
| |
| // Needs to be last. |
| #include "google/protobuf/port_def.inc" // NOLINT |
| |
| namespace google { |
| namespace protobuf { |
| |
| #ifdef _WIN32 |
| // Windows doesn't have symbolic links. |
| #define lstat stat |
| // DO NOT include <io.h>, instead create functions in io_win32.{h,cc} and import |
| // them like we do below. |
| #endif |
| |
| #ifdef _WIN32 |
| using google::protobuf::io::win32::access; |
| using google::protobuf::io::win32::chdir; |
| using google::protobuf::io::win32::fopen; |
| using google::protobuf::io::win32::mkdir; |
| using google::protobuf::io::win32::stat; |
| #endif |
| |
| bool File::Exists(const std::string& name) { |
| return access(name.c_str(), F_OK) == 0; |
| } |
| |
| absl::Status File::ReadFileToString(const std::string& name, |
| std::string* output, bool text_mode) { |
| char buffer[1024]; |
| FILE* file = fopen(name.c_str(), text_mode ? "rt" : "rb"); |
| if (file == nullptr) return absl::NotFoundError("Could not open file"); |
| |
| while (true) { |
| size_t n = fread(buffer, 1, sizeof(buffer), file); |
| if (n <= 0) break; |
| output->append(buffer, n); |
| } |
| |
| int error = ferror(file); |
| if (fclose(file) != 0) return absl::InternalError("Failed to close file"); |
| if (error != 0) return absl::InternalError("Error parsing file"); |
| return absl::OkStatus(); |
| } |
| |
| void File::ReadFileToStringOrDie(const std::string& name, std::string* output) { |
| ABSL_CHECK_OK(ReadFileToString(name, output)) << "Could not read: " << name; |
| } |
| |
| absl::Status File::WriteStringToFile(absl::string_view contents, |
| const std::string& name) { |
| FILE* file = fopen(name.c_str(), "wb"); |
| if (file == nullptr) { |
| return absl::InternalError( |
| absl::StrCat("fopen(", name, ", \"wb\"): ", strerror(errno))); |
| } |
| |
| if (fwrite(contents.data(), 1, contents.size(), file) != contents.size()) { |
| fclose(file); |
| return absl::InternalError( |
| absl::StrCat("fwrite(", name, "): ", strerror(errno))); |
| } |
| |
| if (fclose(file) != 0) { |
| return absl::InternalError("Failed to close file"); |
| } |
| return absl::OkStatus(); |
| } |
| |
| void File::WriteStringToFileOrDie(absl::string_view contents, |
| const std::string& name) { |
| FILE* file = fopen(name.c_str(), "wb"); |
| ABSL_CHECK(file != nullptr) |
| << "fopen(" << name << ", \"wb\"): " << strerror(errno); |
| ABSL_CHECK_EQ(fwrite(contents.data(), 1, contents.size(), file), |
| contents.size()) |
| << "fwrite(" << name << "): " << strerror(errno); |
| ABSL_CHECK(fclose(file) == 0) |
| << "fclose(" << name << "): " << strerror(errno); |
| } |
| |
| absl::Status File::CreateDir(const std::string& name, int mode) { |
| if (!name.empty()) { |
| ABSL_CHECK(name[name.size() - 1] != '.'); |
| } |
| if (mkdir(name.c_str(), mode) != 0) { |
| return absl::InternalError("Failed to create directory"); |
| } |
| return absl::OkStatus(); |
| } |
| |
| absl::Status File::RecursivelyCreateDir(const std::string& path, int mode) { |
| if (CreateDir(path, mode).ok()) return absl::OkStatus(); |
| |
| if (Exists(path)) return absl::AlreadyExistsError("Path already exists"); |
| |
| // Try creating the parent. |
| std::string::size_type slashpos = path.find_last_of('/'); |
| if (slashpos == std::string::npos) { |
| return absl::FailedPreconditionError("No parent given"); |
| } |
| |
| RETURN_IF_ERROR(RecursivelyCreateDir(path.substr(0, slashpos), mode)); |
| return CreateDir(path, mode); |
| } |
| |
| void File::DeleteRecursively(const std::string& name, void* dummy1, |
| void* dummy2) { |
| if (name.empty()) return; |
| |
| // We don't care too much about error checking here since this is only used |
| // in tests to delete temporary directories that are under /tmp anyway. |
| |
| #ifdef _MSC_VER |
| // This interface is so weird. |
| WIN32_FIND_DATAA find_data; |
| HANDLE find_handle = |
| FindFirstFileA(absl::StrCat(name, "/*").c_str(), &find_data); |
| if (find_handle == INVALID_HANDLE_VALUE) { |
| // Just delete it, whatever it is. |
| DeleteFileA(name.c_str()); |
| RemoveDirectoryA(name.c_str()); |
| return; |
| } |
| |
| do { |
| std::string entry_name = find_data.cFileName; |
| if (entry_name != "." && entry_name != "..") { |
| std::string path = absl::StrCat(name, "/", entry_name); |
| if (find_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) { |
| DeleteRecursively(path, NULL, NULL); |
| RemoveDirectoryA(path.c_str()); |
| } else { |
| DeleteFileA(path.c_str()); |
| } |
| } |
| } while(FindNextFileA(find_handle, &find_data)); |
| FindClose(find_handle); |
| |
| RemoveDirectoryA(name.c_str()); |
| #else |
| // Use opendir()! Yay! |
| // lstat = Don't follow symbolic links. |
| struct stat stats; |
| if (lstat(name.c_str(), &stats) != 0) return; |
| |
| if (S_ISDIR(stats.st_mode)) { |
| DIR* dir = opendir(name.c_str()); |
| if (dir != NULL) { |
| while (true) { |
| struct dirent* entry = readdir(dir); |
| if (entry == NULL) break; |
| std::string entry_name = entry->d_name; |
| if (entry_name != "." && entry_name != "..") { |
| DeleteRecursively(absl::StrCat(name, "/", entry_name), NULL, NULL); |
| } |
| } |
| } |
| |
| closedir(dir); |
| rmdir(name.c_str()); |
| |
| } else if (S_ISREG(stats.st_mode)) { |
| remove(name.c_str()); |
| } |
| #endif |
| } |
| |
| bool File::ChangeWorkingDirectory(const std::string& new_working_directory) { |
| return chdir(new_working_directory.c_str()) == 0; |
| } |
| |
| } // namespace protobuf |
| } // namespace google |
| |
| #include "google/protobuf/port_undef.inc" // NOLINT |