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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "network_sampler.h"
#include "utils/file_reader.h"
#include <fcntl.h>
#include <sstream>
#include <string.h>
#include <string>
#include <unistd.h>
namespace profiler {
int NetworkSampler::GetUid(const std::string &data_file) {
std::string uid;
if (GetUidString(data_file, &uid)) {
return atoi(uid.c_str());
}
return -1;
}
bool NetworkSampler::GetUidString(const std::string &data_file,
std::string *uid_result) {
std::string content;
FileReader::Read(data_file, &content);
const char *uid_prefix = "Uid:";
// Find the uid value start position. It's supposed to be after the prefix,
// also after empty spaces on the same line.
size_t start = content.find(uid_prefix);
if (start != std::string::npos) {
start += strlen(uid_prefix);
start = content.find_first_not_of(" \t", start);
if (start != std::string::npos) {
// Find the uid end position, which should be empty space or new line,
// and check the uid value contains 0-9 only.
size_t end = content.find_first_not_of("0123456789", start);
if (start != end) {
if (end == std::string::npos) {
uid_result->assign(content.c_str() + start);
return true;
}
else if (end == content.find_first_of(" \t\n\f", start)) {
uid_result->assign(content, start, end - start);
return true;
}
}
}
}
return false;
}
} // namespace profiler
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