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// Copyright 2011 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "courgette/ensemble.h"
#include <stddef.h>
#include <stdint.h>
#include "base/strings/string_number_conversions.h"
#include "courgette/program_detector.h"
#include "courgette/region.h"
#include "courgette/simple_delta.h"
#include "courgette/streams.h"
namespace courgette {
Element::Element(ExecutableType kind,
Ensemble* ensemble,
const Region& region)
: kind_(kind), ensemble_(ensemble), region_(region) {
}
Element::~Element() = default;
std::string Element::Name() const {
return ensemble_->name() + "(" + base::NumberToString(kind()) + "," +
base::NumberToString(offset_in_ensemble()) + "," +
base::NumberToString(region().length()) + ")";
}
// Scans the Ensemble's region, sniffing out Elements. We assume that the
// elements do not overlap.
Status Ensemble::FindEmbeddedElements() {
size_t length = region_.length();
const uint8_t* start = region_.start();
size_t position = 0;
while (position < length) {
ExecutableType type;
size_t detected_length;
Status result = DetectExecutableType(start + position,
length - position,
&type, &detected_length);
if (result == C_OK) {
Region region(start + position, detected_length);
Element* element = new Element(type, this, region);
owned_elements_.push_back(element);
elements_.push_back(element);
position += region.length();
} else {
position++;
}
}
return C_OK;
}
Ensemble::~Ensemble() {
for (size_t i = 0; i < owned_elements_.size(); ++i)
delete owned_elements_[i];
}
} // namespace
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