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/*
* Copyright (C) 2008 The Android Open Source Project
*
* 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.
*/
#ifndef __UTILS_BUFFER_H__
#define __UTILS_BUFFER_H__ 1
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
namespace android {
class Buffer
{
private:
char *buf;
int bufsiz;
int used;
void ensureCapacity(int len);
void
makeRoomFor(int len)
{
if (len + used >= bufsiz) {
bufsiz = (len + used) * 3/2 + 2;
char *blah = new char[bufsiz];
memcpy(blah, buf, used);
delete[] buf;
buf = blah;
}
}
public:
Buffer()
{
bufsiz = 16;
buf = new char[bufsiz];
clear();
}
~Buffer()
{
delete[] buf;
}
void
clear()
{
buf[0] = '\0';
used = 0;
}
int
length()
{
return used;
}
void
append(const char c)
{
makeRoomFor(1);
buf[used] = c;
used++;
buf[used] = '\0';
}
void
append(const char *s, int len)
{
makeRoomFor(len);
memcpy(buf + used, s, len);
used += len;
buf[used] = '\0';
}
void
append(const char *s)
{
append(s, strlen(s));
}
char *
getBytes()
{
return buf;
}
};
}; // namespace android
#endif
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