pad.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you 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
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 */
 
#include <sal/config.h>
 
#include <cassert>
 
#include <sal/types.h>
#include <xmlreader/pad.hxx>
#include <xmlreader/span.hxx>
 
namespace xmlreader {
 
void Pad::add(char const * begin, sal_Int32 length) {
    assert(
        begin != nullptr && length >= 0 && !(span_.is() && buffer_.getLength() != 0));
    if (length != 0) {
        flushSpan();
        if (buffer_.isEmpty()) {
            span_ = Span(begin, length);
        } else {
            buffer_.append(begin, length);
        }
    }
}
 
void Pad::addEphemeral(char const * begin, sal_Int32 length) {
    assert(
        begin != nullptr && length >= 0 && !(span_.is() && buffer_.getLength() != 0));
    if (length != 0) {
        flushSpan();
        buffer_.append(begin, length);
    }
}
 
void Pad::clear() {
    assert(!(span_.is() && buffer_.getLength() != 0));
    span_.clear();
    buffer_.setLength(0);
}
 
Span Pad::get() const {
    assert(!(span_.is() && buffer_.getLength() != 0));
    if (span_.is()) {
        return span_;
    } else if (buffer_.isEmpty()) {
        return Span("");
    } else {
        return Span(buffer_.getStr(), buffer_.getLength());
    }
}
 
void Pad::flushSpan() {
    if (span_.is()) {
        buffer_.append(span_.begin, span_.length);
        span_.clear();
    }
}
 
}
 
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