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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
#ifndef __FILE_ENTRY_H__
#define __FILE_ENTRY_H__
#include "file_type.h"
#include "reader.h"
namespace bundle
{
// FileEntry: Records information about embedded files.
//
// The bundle manifest records the following meta-data for each
// file embedded in the bundle:
// Fixed size portion (file_entry_fixed_t)
// - Offset
// - Size
// - File Entry Type
// Variable Size portion
// - relative path (7-bit extension encoded length prefixed string)
#pragma pack(push, 1)
struct file_entry_fixed_t
{
int64_t offset;
int64_t size;
file_type_t type;
};
#pragma pack(pop)
class file_entry_t
{
public:
file_entry_t()
: m_offset(0)
, m_size(0)
, m_type(file_type_t::__last)
, m_relative_path()
{
}
file_entry_t(const file_entry_fixed_t *fixed_data)
:m_relative_path()
{
// File_entries in the bundle-manifest are expected to be used
// beyond startup (for loading files directly from bundle, lazy extraction, etc.).
// The contents of fixed_data are copied on to file_entry in order to
// avoid memory mapped IO later.
m_offset = fixed_data->offset;
m_size = fixed_data->size;
m_type = fixed_data->type;
}
const pal::string_t relative_path() const { return m_relative_path; }
int64_t offset() const { return m_offset; }
int64_t size() const { return m_size; }
file_type_t type() const { return m_type; }
bool needs_extraction() const;
static file_entry_t read(reader_t &reader);
private:
int64_t m_offset;
int64_t m_size;
file_type_t m_type;
pal::string_t m_relative_path; // Path of an embedded file, relative to the extraction directory.
bool is_valid() const;
};
}
#endif // __FILE_ENTRY_H__
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