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/*
+----------------------------------------------------------------------+
| Swoole |
+----------------------------------------------------------------------+
| This source file is subject to version 2.0 of the Apache license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.apache.org/licenses/LICENSE-2.0.html |
| If you did not receive a copy of the Apache2.0 license and are unable|
| to obtain it through the world-wide-web, please send a note to |
| license@swoole.com so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Tianfeng Han <rango@swoole.com> |
| Twosee <twose@qq.com> |
+----------------------------------------------------------------------+
*/
#pragma once
#include <stdio.h>
#include <stdarg.h>
#include <string>
#include <memory>
#include <chrono>
#include <set>
#include <vector>
#include <stack>
#include <type_traits>
#define __SCOPEGUARD_CONCATENATE_IMPL(s1, s2) s1##s2
#define __SCOPEGUARD_CONCATENATE(s1, s2) __SCOPEGUARD_CONCATENATE_IMPL(s1, s2)
namespace swoole {
namespace std_string {
template <typename... Args>
inline std::string format(const char *format, Args... args) {
size_t size = snprintf(nullptr, 0, format, args...) + 1; // Extra space for '\0'
std::unique_ptr<char[]> buf(new char[size]);
snprintf(buf.get(), size, format, args...);
return std::string(buf.get(), buf.get() + size - 1); // We don't want the '\0' inside
}
inline std::string vformat(const char *format, va_list args) {
va_list _args;
va_copy(_args, args);
size_t size = vsnprintf(nullptr, 0, format, _args) + 1; // Extra space for '\0'
va_end(_args);
std::unique_ptr<char[]> buf(new char[size]);
vsnprintf(buf.get(), size, format, args);
return std::string(buf.get(), buf.get() + size - 1); // We don't want the '\0' inside
}
} // namespace std_string
template <typename T>
static inline long time(bool steady = false) {
if (steady) {
auto now = std::chrono::steady_clock::now();
return std::chrono::duration_cast<T>(now.time_since_epoch()).count();
} else {
auto now = std::chrono::system_clock::now();
return std::chrono::duration_cast<T>(now.time_since_epoch()).count();
}
}
class DeferTask {
private:
std::stack<Callback> list_;
public:
void add(Callback fn) {
list_.push(fn);
}
~DeferTask() {
while (!list_.empty()) {
auto fn = list_.top();
fn(nullptr);
list_.pop();
}
}
};
template <typename Fun>
class ScopeGuard {
public:
ScopeGuard(Fun &&f) : _fun(std::forward<Fun>(f)), _active(true) {}
~ScopeGuard() {
if (_active) {
_fun();
}
}
void dismiss() {
_active = false;
}
ScopeGuard() = delete;
ScopeGuard(const ScopeGuard &) = delete;
ScopeGuard &operator=(const ScopeGuard &) = delete;
ScopeGuard(ScopeGuard &&rhs) : _fun(std::move(rhs._fun)), _active(rhs._active) {
rhs.dismiss();
}
private:
Fun _fun;
bool _active;
};
namespace detail {
enum class ScopeGuardOnExit {};
template <typename Fun>
inline ScopeGuard<Fun> operator+(ScopeGuardOnExit, Fun &&fn) {
return ScopeGuard<Fun>(std::forward<Fun>(fn));
}
} // namespace detail
// Helper macro
#define ON_SCOPE_EXIT \
auto __SCOPEGUARD_CONCATENATE(ext_exitBlock_, __LINE__) = swoole::detail::ScopeGuardOnExit() + [&]()
std::string intersection(std::vector<std::string> &vec1, std::set<std::string> &vec2);
static inline size_t rtrim(char *str, size_t len) {
for (size_t i = len; i > 0;) {
if (isspace(str[--i])) {
str[i] = 0;
len--;
} else {
break;
}
}
return len;
}
static inline size_t rtrim(const char *str, size_t len) {
for (size_t i = len; i > 0;) {
if (isspace(str[--i])) {
len--;
} else {
break;
}
}
return len;
}
static inline ssize_t substr_len(const char *str, size_t len, char separator, bool before = false) {
const char *substr = (const char *) memchr(str, separator, len);
if (substr == nullptr) {
return -1;
}
return before ? substr - str : str + len - substr - 1;
}
static inline bool starts_with(const char *haystack, size_t l_haystack, const char *needle, size_t l_needle) {
if (l_needle > l_haystack) {
return false;
}
return memcmp(haystack, needle, l_needle) == 0;
}
static inline bool ends_with(const char *haystack, size_t l_haystack, const char *needle, size_t l_needle) {
if (l_needle > l_haystack) {
return false;
}
return memcmp(haystack + l_haystack - l_needle, needle, l_needle) == 0;
}
} // namespace swoole
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