* Copyright (C) 2021 Huawei Device Co., Ltd.
* 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 "string_utils.h"
#include <sstream>
#include <string_ex.h>
#include "cstddef"
#include "cstdint"
#include "cstdlib"
#include "ostream"
#include "string"
#include "telephony_log_wrapper.h"
#include "vector"
namespace OHOS {
namespace Telephony {
static constexpr uint8_t HEX_OFFSET = 4;
static constexpr uint8_t STEP_2BIT = 2;
static constexpr char HEX_TABLE[] = "0123456789ABCDEF";
static constexpr uint32_t MMS_PDU_MAX_SIZE = 10 * 1024 * 1024;
StringUtils::StringUtils() {}
StringUtils::~StringUtils() {}
uint16_t StringUtils::HexCharToInt(char c)
{
const uint8_t decimal = 10;
if (c >= '0' && c <= '9') {
return (c - '0');
}
if (c >= 'A' && c <= 'F') {
return (c - 'A' + decimal);
}
if (c >= 'a' && c <= 'f') {
return (c - 'a' + decimal);
}
return 0;
}
std::string StringUtils::StringToHex(const std::string &data)
{
std::stringstream ss;
for (std::string::size_type i = 0; i < data.size(); ++i) {
unsigned char temp = static_cast<unsigned char>(data[i]) >> HEX_OFFSET;
ss << HEX_TABLE[temp] << HEX_TABLE[static_cast<unsigned char>(data[i]) & 0xf];
}
return ss.str();
}
std::string StringUtils::StringToHex(const char *data, int byteLength)
{
if (data == nullptr || byteLength <= 0 || static_cast<uint32_t>(byteLength) > MMS_PDU_MAX_SIZE) {
return "";
}
std::stringstream ss;
for (int i = 0; i < byteLength; ++i) {
unsigned char temp = static_cast<unsigned char>(data[i]) >> HEX_OFFSET;
ss << HEX_TABLE[temp] << HEX_TABLE[static_cast<unsigned char>(data[i]) & 0xf];
}
return ss.str();
}
std::string StringUtils::StringToHex(const std::vector<uint8_t> &data)
{
std::stringstream ss;
for (std::size_t i = 0; i < data.size(); ++i) {
unsigned char temp = static_cast<unsigned char>(data[i]) >> HEX_OFFSET;
ss << HEX_TABLE[temp] << HEX_TABLE[static_cast<unsigned char>(data[i]) & 0xf];
}
return ss.str();
}
std::string StringUtils::HexToString(const std::string &str)
{
std::string result;
uint8_t hexDecimal = 16;
uint8_t hexStep = 2;
if (str.length() <= 0) {
return result;
}
for (size_t i = 0; i < str.length() - 1; i += STEP_2BIT) {
std::string byte = str.substr(i, hexStep);
char chr = 0;
long strTemp = strtol(byte.c_str(), nullptr, hexDecimal);
if (strTemp > 0) {
chr = static_cast<char>(strTemp);
}
result.push_back(chr);
}
return result;
}
std::vector<uint8_t> StringUtils::HexToByteVector(const std::string &str)
{
std::vector<uint8_t> ret;
int sz = static_cast<int>(str.length());
if (sz <= 0) {
return ret;
}
for (int i = 0; i < (sz - 1); i += STEP_2BIT) {
auto temp = static_cast<uint8_t>((HexCharToInt(str.at(i)) << HEX_OFFSET) | HexCharToInt(str.at(i + 1)));
ret.push_back(temp);
}
return ret;
}
std::string StringUtils::ToUtf8(const std::u16string &str16)
{
if (str16.empty()) {
std::string ret;
return ret;
}
return Str16ToStr8(str16);
}
std::u16string StringUtils::ToUtf16(const std::string &str)
{
if (str.empty()) {
std::u16string ret;
return ret;
}
return Str8ToStr16(str);
}
bool StringUtils::IsEmpty(const std::string &str)
{
if (str.empty()) {
return true;
}
std::string strTemp = TrimStr(str);
return strTemp.empty() || strlen(strTemp.c_str()) == 0;
}
std::string StringUtils::GetPortFromURL(const std::string &url)
{
std::string delimiter = "://";
std::string protocol = GetProtocolFromURL(url);
std::string hostname = GetHostnameFromURL(url);
size_t start = protocol.empty() ? hostname.size() : protocol.size() + delimiter.size() + hostname.size();
size_t posStart = url.find_first_of(':', start);
if (posStart == std::string::npos) {
return "";
}
size_t posEnd = std::min({url.find('/', start), url.find('?', start)});
if (posEnd == std::string::npos) {
return url.substr(posStart + 1);
}
if (posStart > posEnd) {
return "";
}
return url.substr(posStart + 1, posEnd - posStart - 1);
}
std::string StringUtils::GetHostnameFromURL(const std::string &url)
{
if (url.empty()) {
return "";
}
std::string delimiter = "://";
std::string tempUrl = url;
std::replace(tempUrl.begin(), tempUrl.end(), '\\', '/');
size_t posStart = tempUrl.find(delimiter);
if (posStart != std::string::npos) {
posStart += delimiter.length();
} else {
posStart = 0;
}
size_t notSlash = tempUrl.find_first_not_of('/', posStart);
if (notSlash != std::string::npos) {
posStart = notSlash;
}
size_t posEnd = std::min({ tempUrl.find(':', posStart),
tempUrl.find('/', posStart), tempUrl.find('?', posStart) });
if (posEnd != std::string::npos) {
return tempUrl.substr(posStart, posEnd - posStart);
}
return tempUrl.substr(posStart);
}
std::string StringUtils::GetHostnameWithPortFromURL(const std::string& url)
{
std::string portDelimiter = ":";
auto hostname = GetHostnameFromURL(url);
if (!hostname.empty()) {
std::string port = GetPortFromURL(url);
if (!port.empty()) {
hostname += portDelimiter + port;
}
}
return hostname;
}
std::string StringUtils::GetProtocolFromURL(const std::string &url)
{
std::string delimiter = "://";
size_t pos = url.find(delimiter);
if (pos != std::string::npos) {
return url.substr(0, pos);
}
return "";
}
}
}