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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "pdf/pdfium/pdfium_api_string_buffer_adapter.h"
#include <string>
#include "base/logging.h"
#include "base/numerics/safe_math.h"
#include "base/strings/string16.h"
#include "base/strings/string_util.h"
namespace chrome_pdf {
template <class StringType>
PDFiumAPIStringBufferAdapter<StringType>::PDFiumAPIStringBufferAdapter(
StringType* str,
size_t expected_size,
bool check_expected_size)
: str_(str),
data_(WriteInto(str, expected_size + 1)),
expected_size_(expected_size),
check_expected_size_(check_expected_size),
is_closed_(false) {
}
template <class StringType>
PDFiumAPIStringBufferAdapter<StringType>::~PDFiumAPIStringBufferAdapter() {
DCHECK(is_closed_);
}
template <class StringType>
void* PDFiumAPIStringBufferAdapter<StringType>::GetData() {
DCHECK(!is_closed_);
return data_;
}
template <class StringType>
void PDFiumAPIStringBufferAdapter<StringType>::Close(int actual_size) {
base::CheckedNumeric<size_t> unsigned_size = actual_size;
Close(unsigned_size.ValueOrDie());
}
template <class StringType>
void PDFiumAPIStringBufferAdapter<StringType>::Close(size_t actual_size) {
DCHECK(!is_closed_);
is_closed_ = true;
if (check_expected_size_)
DCHECK_EQ(expected_size_, actual_size);
if (actual_size > 0) {
DCHECK((*str_)[actual_size - 1] == 0);
str_->resize(actual_size - 1);
} else {
str_->clear();
}
}
// explicit instantiations
template class PDFiumAPIStringBufferAdapter<std::string>;
template class PDFiumAPIStringBufferAdapter<base::string16>;
} // namespace chrome_pdf
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