amxmodx/public/amtl/am-string.h

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// vim: set sts=8 ts=2 sw=2 tw=99 et:
//
// Copyright (C) 2013, David Anderson and AlliedModders LLC
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of AlliedModders LLC nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
#ifndef _include_amtl_string_h_
#define _include_amtl_string_h_
#include <stdlib.h>
#include <string.h>
#include <am-utility.h>
#include <am-moveable.h>
namespace ke {
// ASCII string.
class AString
{
public:
AString()
: length_(0)
{
}
explicit AString(const char *str) {
set(str, strlen(str));
}
AString(const char *str, size_t length) {
set(str, length);
}
AString(const AString &other) {
if (other.length_)
set(other.chars_, other.length_);
else
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length_ = 0;
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}
AString(Moveable<AString> other)
: chars_(other->chars_.take()),
length_(other->length_)
{
other->length_ = 0;
}
AString &operator =(const char *str) {
if (str && str[0]) {
set(str, strlen(str));
} else {
chars_ = NULL;
length_ = 0;
}
return *this;
}
AString &operator =(const AString &other) {
if (other.length_) {
set(other.chars_, other.length_);
} else {
chars_ = NULL;
length_ = 0;
}
return *this;
}
AString &operator =(Moveable<AString> other) {
chars_ = other->chars_.take();
length_ = other->length_;
other->length_ = 0;
return *this;
}
int compare(const char *str) const {
return strcmp(chars(), str);
}
int compare(const AString &other) const {
return strcmp(chars(), other.chars());
}
bool operator ==(const AString &other) const {
return other.length() == length() &&
memcmp(other.chars(), chars(), length()) == 0;
}
char operator [](size_t index) const {
assert(index < length());
return chars()[index];
}
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void setVoid() {
chars_ = NULL;
length_ = kInvalidLength;
}
bool isVoid() const {
return length_ == kInvalidLength;
}
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size_t length() const {
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assert(!isVoid());
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return length_;
}
const char *chars() const {
if (!chars_)
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return isVoid() ? NULL : "";
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return chars_;
}
private:
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static const size_t kInvalidLength = (size_t)-1;
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void set(const char *str, size_t length) {
chars_ = new char[length + 1];
length_ = length;
memcpy(chars_, str, length);
chars_[length] = '\0';
}
private:
AutoArray<char> chars_;
size_t length_;
};
}
#endif // _include_amtl_string_h_