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/*
* Phusion Passenger - http://www.modrails.com/
* Copyright (c) 2009 Phusion
*
* "Phusion Passenger" is a trademark of Hongli Lai & Ninh Bui.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef _PASSENGER_STATIC_STRING_H_
#define _PASSENGER_STATIC_STRING_H_
#include <string>
#include <cstring>
namespace Passenger {
using namespace std;
/**
* An immutable, static byte buffer. This class will never copy data:
* it just holds a pointer to the data. So a StaticString will become unusable
* once the data it refers to has been freed.
*
* StaticString will never modify the data.
*/
class StaticString {
private:
const char *content;
string::size_type len;
public:
StaticString() {
content = "";
len = 0;
}
StaticString(const StaticString &b) {
content = b.content;
len = b.len;
}
StaticString(const string &s) {
content = s.data();
len = s.size();
}
StaticString(const char *data) {
content = data;
len = strlen(data);
}
StaticString(const char *data, string::size_type len) {
content = data;
this->len = len;
}
bool empty() const {
return len == 0;
}
string::size_type size() const {
return len;
}
const char *c_str() const {
return content;
}
const char *data() const {
return content;
}
bool equals(const StaticString &other) const {
return len == other.len && memcmp(content, other.content, len) == 0;
}
bool equals(const string &other) const {
return len == other.size() && memcmp(content, other.data(), len) == 0;
}
bool operator==(const StaticString &other) const {
return len == other.len && memcmp(content, other.content, len) == 0;
}
bool operator==(const char *other) const {
return memcmp(content, other, strlen(other)) == 0;
}
bool operator!=(const StaticString &other) const {
return len == other.len && memcmp(content, other.content, len) != 0;
}
bool operator!=(const char *other) const {
return memcmp(content, other, strlen(other)) != 0;
}
bool operator<(const StaticString &other) const {
size_t size = (len < other.size()) ? len : other.size();
int result = memcmp(content, other.data(), size);
if (result == 0) {
return len < other.size();
} else {
return result < 0;
}
}
bool operator<(const char *other) const {
return *this < StaticString(other);
}
string operator+(const char *other) const {
return string(content, len) + other;
}
string operator+(const string &other) const {
return string(content, len) + other;
}
string operator+(const StaticString &other) const {
string result(content, len);
result.append(other.data(), other.size());
return result;
}
operator string() const {
return string(content, len);
}
};
} // namespace Passenger
#endif /* _PASSENGER_STATIC_STRING_H_ */
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