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