Reorganization directory structure [3/n]

Change-Id: If3dfa3f6007f8810a6a1ae1a4f0c7da38544648d

shared/source/os_interface/linux/debug_env_reader.cpp

@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2017-2020 Intel Corporation
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ */
+
+#include "os_interface/linux/debug_env_reader.h"
+
+namespace NEO {
+
+SettingsReader *SettingsReader::createOsReader(bool userScope, const std::string &regKey) {
+    return new EnvironmentVariableReader;
+}
+
+const char *EnvironmentVariableReader::appSpecificLocation(const std::string &name) {
+    return name.c_str();
+}
+
+bool EnvironmentVariableReader::getSetting(const char *settingName, bool defaultValue) {
+    return getSetting(settingName, static_cast<int32_t>(defaultValue)) ? true : false;
+}
+
+int32_t EnvironmentVariableReader::getSetting(const char *settingName, int32_t defaultValue) {
+    int32_t value = defaultValue;
+    char *envValue;
+
+    envValue = getenv(settingName);
+    if (envValue) {
+        value = atoi(envValue);
+    }
+    return value;
+}
+
+std::string EnvironmentVariableReader::getSetting(const char *settingName, const std::string &value) {
+    char *envValue;
+    std::string keyValue;
+    keyValue.assign(value);
+
+    envValue = getenv(settingName);
+    if (envValue) {
+        keyValue.assign(envValue);
+    }
+    return keyValue;
+}
+} // namespace NEO