Index: device/generic_sensor/linux/platform_sensor_utils_linux.cc |
diff --git a/device/generic_sensor/linux/platform_sensor_utils_linux.cc b/device/generic_sensor/linux/platform_sensor_utils_linux.cc |
deleted file mode 100644 |
index 6f81ca74c2c7b2aedcc469cd54f785109015d4f2..0000000000000000000000000000000000000000 |
--- a/device/generic_sensor/linux/platform_sensor_utils_linux.cc |
+++ /dev/null |
@@ -1,131 +0,0 @@ |
-// Copyright 2016 The Chromium Authors. All rights reserved. |
-// Use of this source code is governed by a BSD-style license that can be |
-// found in the LICENSE file. |
- |
-#include "device/generic_sensor/linux/platform_sensor_utils_linux.h" |
- |
-#include "base/files/file_enumerator.h" |
-#include "base/files/file_util.h" |
-#include "base/strings/string_number_conversions.h" |
-#include "base/strings/string_util.h" |
-#include "base/threading/thread_restrictions.h" |
-#include "device/generic_sensor/public/cpp/sensor_reading.h" |
- |
-namespace device { |
- |
-namespace { |
- |
-bool InitSensorPaths(const std::vector<std::string>& input_names, |
- const char* base_path, |
- std::vector<base::FilePath>* sensor_paths) { |
- // Search the iio/devices directory for a subdirectory (eg "device0" or |
- // "iio:device0") that contains the specified input_name file (eg |
- // "in_illuminance_input" or "in_illuminance0_input"). |
- base::FileEnumerator dir_enumerator(base::FilePath(base_path), false, |
- base::FileEnumerator::DIRECTORIES); |
- for (base::FilePath check_path = dir_enumerator.Next(); !check_path.empty(); |
- check_path = dir_enumerator.Next()) { |
- for (auto const& file_name : input_names) { |
- base::FilePath full_path = check_path.Append(file_name); |
- if (base::PathExists(full_path)) { |
- sensor_paths->push_back(full_path); |
- return true; |
- } |
- } |
- } |
- return false; |
-} |
- |
-bool GetSensorFilePaths(const SensorDataLinux& data, |
- std::vector<base::FilePath>* sensor_paths) { |
- DCHECK(sensor_paths->empty()); |
- // Depending on a sensor, there can be up to three sets of files that need |
- // to be checked. If one of three files is not found, a sensor is |
- // treated as a non-existing one. |
- for (auto const& file_names : data.sensor_file_names) { |
- // Supply InitSensorPaths() with a set of files. |
- // Only one file from each set should be found. |
- if (!InitSensorPaths(file_names, data.base_path_sensor_linux, sensor_paths)) |
- return false; |
- } |
- return true; |
-} |
- |
-// Returns -1 if unable to read a scaling value. |
-// Otherwise, returns a scaling value read from a file. |
-double ReadSensorScalingValue(const base::FilePath& scale_file_path) { |
- std::string value; |
- if (!base::ReadFileToString(scale_file_path, &value)) |
- return -1; |
- |
- double scaling_value; |
- base::TrimWhitespaceASCII(value, base::TRIM_ALL, &value); |
- if (!base::StringToDouble(value, &scaling_value)) |
- return -1; |
- return scaling_value; |
-} |
- |
-} // namespace |
- |
-// static |
-std::unique_ptr<SensorReader> SensorReader::Create( |
- const SensorDataLinux& data) { |
- base::ThreadRestrictions::AssertIOAllowed(); |
- std::vector<base::FilePath> sensor_paths; |
- if (!GetSensorFilePaths(data, &sensor_paths)) |
- return nullptr; |
- |
- DCHECK(!sensor_paths.empty()); |
- // Scaling value is 1 if scaling file is not specified is |data| or scaling |
- // file is not found. |
- double scaling_value = 1; |
- if (!data.sensor_scale_name.empty()) { |
- const base::FilePath scale_file_path = |
- sensor_paths.back().DirName().Append(data.sensor_scale_name); |
- if (base::PathExists(scale_file_path)) |
- scaling_value = ReadSensorScalingValue(scale_file_path); |
- } |
- |
- // A file with a scaling value is found, but couldn't be read. |
- if (scaling_value == -1) |
- return nullptr; |
- |
- return base::WrapUnique(new SensorReader( |
- std::move(sensor_paths), scaling_value, data.apply_scaling_func)); |
-} |
- |
-SensorReader::SensorReader( |
- std::vector<base::FilePath> sensor_paths, |
- double scaling_value, |
- const SensorDataLinux::ReaderFunctor& apply_scaling_func) |
- : sensor_paths_(std::move(sensor_paths)), |
- scaling_value_(scaling_value), |
- apply_scaling_func_(apply_scaling_func) { |
- DCHECK(!sensor_paths_.empty()); |
-} |
- |
-SensorReader::~SensorReader() = default; |
- |
-bool SensorReader::ReadSensorReading(SensorReading* reading) { |
- base::ThreadRestrictions::AssertIOAllowed(); |
- SensorReading readings; |
- DCHECK_LE(sensor_paths_.size(), arraysize(readings.values)); |
- int i = 0; |
- for (const auto& path : sensor_paths_) { |
- std::string new_read_value; |
- if (!base::ReadFileToString(path, &new_read_value)) |
- return false; |
- |
- double new_value = 0; |
- base::TrimWhitespaceASCII(new_read_value, base::TRIM_ALL, &new_read_value); |
- if (!base::StringToDouble(new_read_value, &new_value)) |
- return false; |
- readings.values[i++] = new_value; |
- } |
- if (!apply_scaling_func_.is_null()) |
- apply_scaling_func_.Run(scaling_value_, readings); |
- *reading = readings; |
- return true; |
-} |
- |
-} // namespace device |