* Copyright (c) 2024 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 "util/string_helper.h"
#include <cstdarg>
#include "securec.h"
namespace OHOS {
namespace Idl {
std::vector<std::string> StringHelper::Split(std::string sources, const std::string &limit)
{
std::vector<std::string> result;
if (sources.empty()) {
return result;
}
if (limit.empty()) {
result.push_back(sources);
return result;
}
size_t begin = 0;
size_t pos = sources.find(limit, begin);
while (pos != std::string::npos) {
std::string element = sources.substr(begin, pos - begin);
if (!element.empty()) {
result.push_back(element);
}
begin = pos + limit.size();
pos = sources.find(limit, begin);
}
if (begin < sources.size()) {
std::string element = sources.substr(begin);
result.push_back(element);
}
return result;
}
bool StringHelper::StartWith(const std::string &value, char prefix)
{
return value.find(prefix) == 0;
}
bool StringHelper::StartWith(const std::string &value, const std::string &prefix)
{
return value.find(prefix) == 0;
}
bool StringHelper::EndWith(const std::string &value, char suffix)
{
if (value.empty()) {
return false;
}
return value.back() == suffix;
}
bool StringHelper::EndWith(const std::string &value, const std::string &suffix)
{
size_t index = value.rfind(suffix);
if (index == std::string::npos) {
return false;
}
return index + suffix.size() == value.size();
}
std::string StringHelper::Replace(const std::string &value, char oldChar, char newChar)
{
if (value.empty() || oldChar == newChar) {
return value;
}
std::string result = value;
for (size_t i = 0; i < result.size(); i++) {
if (result[i] != oldChar) {
continue;
}
result[i] = newChar;
}
return result;
}
std::string StringHelper::Replace(const std::string &value, const std::string &oldstr, const std::string &newstr)
{
std::string result = value;
size_t pos = 0;
while ((pos = result.find(oldstr, pos)) != std::string::npos) {
result.replace(pos, oldstr.size(), newstr);
pos += newstr.size();
}
return result;
}
std::string StringHelper::Replace(
const std::string &value, size_t position, const std::string &substr, const std::string &newstr)
{
if (position >= value.size()) {
return value;
}
std::string prefix = value.substr(0, position);
std::string suffix = value.substr(position);
return prefix + Replace(suffix, substr, newstr);
}
std::string StringHelper::Replace(const std::string &value, size_t position, size_t len, const std::string &newStr)
{
if (position >= value.size() || len == 0) {
return value;
}
std::string prefix = value.substr(0, position);
std::string suffix = value.substr(position);
return prefix + newStr + suffix;
}
std::string StringHelper::SubStr(const std::string &value, size_t start, size_t end)
{
if (value.empty() || start == std::string::npos || start >= end) {
return "";
}
return (end == std::string::npos) ? value.substr(start) : value.substr(start, end - start);
}
std::string StringHelper::StrToLower(const std::string &value)
{
std::string result = value;
for (size_t i = 0; i < result.size(); i++) {
if (std::isupper(result[i])) {
result[i] = std::tolower(result[i]);
}
}
return result;
}
std::string StringHelper::StrToUpper(const std::string &value)
{
std::string result = value;
for (size_t i = 0; i < result.size(); i++) {
if (std::islower(result[i])) {
result[i] = std::toupper(result[i]);
}
}
return result;
}
std::string StringHelper::FirstToUpper(const std::string &value)
{
std::string result = value;
if (!result.empty()) {
result[0] = std::toupper(result[0]);
}
return result;
}
std::string StringHelper::Format(const char *format, ...)
{
va_list args;
va_list argsCopy;
va_start(args, format);
va_copy(argsCopy, args);
char buf[lineMaxSize] = {0};
int len = vsnprintf_s(buf, lineMaxSize, lineMaxSize - 1, format, args);
if (len <= 0) {
va_end(args);
va_end(argsCopy);
return "";
}
va_end(args);
va_end(argsCopy);
return std::string(buf, len);
}
int StringHelper::GetHashCode(const std::string &key)
{
unsigned int seed = 31;
unsigned int hash = 0;
const char* string = key.c_str();
if (string != nullptr) {
for (; *string; ++string) {
hash = hash * seed + (*string);
}
}
return (hash & 0x7FFFFFFF);
}
}
}