status.h

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#pragma once
 
#include "roo_logging.h"
 
namespace roo_io {
 
enum Status {
  kOk = 0,
  kEndOfStream = 1,
  kClosed,
  kNotMounted,
  kOpenError,
  kReadError,
  kSeekError,
  kWriteError,
 
  kGenericMountError,
 
  // A write operation was requested, but the filesystem is mounted as
  // read-only.
  kReadOnlyFilesystem,
 
  // Requested file, directory, or its path component, does not exist.
  kNotFound,
 
  // A create or rename operation was requested, while the destination already
  // exists and it is a file.
  kFileExists,
 
  // A create or rename operation was requested, while the destination already
  // exists and it is a directory.
  kDirectoryExists,
 
  // A component used as a directory in the path is not, in fact, a directory.
  kNotDirectory,
 
  // An operation was requested that expects an existing file, while the
  // destination exists but it is not a file.
  kNotFile,
 
  // The 'rmdir' operation was requested, while the target directory exists but
  // it is not empty.
  kDirectoryNotEmpty,
 
  // The specified path is syntactically invalid.
  kInvalidPath,
 
  // Out-of-memory error has occurred.
  kOutOfMemory,
 
  // The limit of open files has been reached.
  kTooManyFilesOpen,
 
  // The capacity of the target device has been exceeded.
  kNoSpaceLeftOnDevice,
 
  // Unexpected general I/O error has ocurred.
  kUnknownIOError,
 
  // Permissions are insufficient.
  kAccessDenied,
 
  // Mount failed because the media is absent.
  kNoMedia,
 
  // Remote connection has been abruptly terminated.
  kConnectionError,
 
  // Write failed because the receiver has closed the connection.
  kBrokenPipe,
};
 
const char* StatusAsString(Status status);
 
inline roo_logging::Stream& operator<<(roo_logging::Stream& s, Status status) {
  s << StatusAsString(status);
  return s;
}
 
}  // namespace roo_io