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LibArchive+Utilities: Port ZipOutputStream to Core::Stream

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This commit is contained in:
Karol Kosek 2022-12-25 15:33:30 +01:00 • committed by Ali Mohammad Pur
parent 012645bdf9
commit 8238f926fd
3 changed files with 90 additions and 80 deletions
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21
Userland/Libraries/LibArchive/Zip.cpp
View file

@ -9,11 +9,6 @@
namespace Archive {
OutputStream& operator<<(OutputStream& stream, ZipCompressionMethod method)
{
return stream << to_underlying(method);
}
bool Zip::find_end_of_central_directory_offset(ReadonlyBytes buffer, size_t& offset)
{
for (size_t backwards_offset = 0; backwards_offset <= UINT16_MAX; backwards_offset++) // the file may have a trailing comment of an arbitrary 16 bit length
@ -108,8 +103,8 @@ bool Zip::for_each_member(Function<IterationDecision(ZipMember const&)> callback
return true;
}
ZipOutputStream::ZipOutputStream(OutputStream& stream)
: m_stream(stream)
ZipOutputStream::ZipOutputStream(NonnullOwnPtr<Core::Stream::Stream> stream)
: m_stream(move(stream))
{
}
@ -119,12 +114,12 @@ static u16 minimum_version_needed(ZipCompressionMethod method)
return method == ZipCompressionMethod::Deflate ? 20 : 10;
}
void ZipOutputStream::add_member(ZipMember const& member)
ErrorOr<void> ZipOutputStream::add_member(ZipMember const& member)
{
VERIFY(!m_finished);
VERIFY(member.name.length() <= UINT16_MAX);
VERIFY(member.compressed_data.size() <= UINT32_MAX);
m_members.append(member);
TRY(m_members.try_append(member));
LocalFileHeader local_file_header {
.minimum_version = minimum_version_needed(member.compression_method),
@ -141,10 +136,10 @@ void ZipOutputStream::add_member(ZipMember const& member)
.extra_data = nullptr,
.compressed_data = member.compressed_data.data(),
};
local_file_header.write(m_stream);
return local_file_header.write(*m_stream);
}
void ZipOutputStream::finish()
ErrorOr<void> ZipOutputStream::finish()
{
VERIFY(!m_finished);
m_finished = true;
@ -175,7 +170,7 @@ void ZipOutputStream::finish()
.comment = nullptr,
};
file_header_offset += sizeof(LocalFileHeader::signature) + (sizeof(LocalFileHeader) - (sizeof(u8*) * 3)) + member.name.length() + member.compressed_data.size();
central_directory_record.write(m_stream);
TRY(central_directory_record.write(*m_stream));
central_directory_size += central_directory_record.size();
}
@ -189,7 +184,7 @@ void ZipOutputStream::finish()
.comment_length = 0,
.comment = nullptr,
};
end_of_central_directory.write(m_stream);
return end_of_central_directory.write(*m_stream);
}
}

120
Userland/Libraries/LibArchive/Zip.h
View file

@ -11,8 +11,8 @@
#include <AK/DeprecatedString.h>
#include <AK/Function.h>
#include <AK/IterationDecision.h>
#include <AK/Stream.h>
#include <AK/Vector.h>
#include <LibCore/Stream.h>
#include <string.h>
namespace Archive {
@ -55,18 +55,23 @@ struct [[gnu::packed]] EndOfCentralDirectory {
return true;
}
void write(OutputStream& stream) const
ErrorOr<void> write(Core::Stream::Stream& stream) const
{
stream.write_or_error(signature);
stream << disk_number;
stream << central_directory_start_disk;
stream << disk_records_count;
stream << total_records_count;
stream << central_directory_size;
stream << central_directory_offset;
stream << comment_length;
auto write_value = [&stream](auto value) {
return stream.write_entire_buffer({ &value, sizeof(value) });
};
TRY(stream.write_entire_buffer(signature));
TRY(write_value(disk_number));
TRY(write_value(central_directory_start_disk));
TRY(write_value(disk_records_count));
TRY(write_value(total_records_count));
TRY(write_value(central_directory_size));
TRY(write_value(central_directory_offset));
TRY(write_value(comment_length));
if (comment_length > 0)
stream.write_or_error({ comment, comment_length });
TRY(stream.write_entire_buffer({ comment, comment_length }));
return {};
}
};
@ -100,8 +105,6 @@ union ZipGeneralPurposeFlags {
};
static_assert(sizeof(ZipGeneralPurposeFlags) == sizeof(u16));
OutputStream& operator<<(OutputStream& stream, ZipCompressionMethod method);
struct [[gnu::packed]] CentralDirectoryRecord {
static constexpr Array<u8, signature_length> signature = { 0x50, 0x4b, 0x01, 0x02 }; // 'PK\x01\x02'
@ -138,31 +141,36 @@ struct [[gnu::packed]] CentralDirectoryRecord {
return true;
}
void write(OutputStream& stream) const
ErrorOr<void> write(Core::Stream::Stream& stream) const
{
stream.write_or_error(signature);
stream << made_by_version;
stream << minimum_version;
stream << general_purpose_flags.flags;
stream << compression_method;
stream << modification_time;
stream << modification_date;
stream << crc32;
stream << compressed_size;
stream << uncompressed_size;
stream << name_length;
stream << extra_data_length;
stream << comment_length;
stream << start_disk;
stream << internal_attributes;
stream << external_attributes;
stream << local_file_header_offset;
auto write_value = [&stream](auto value) {
return stream.write_entire_buffer({ &value, sizeof(value) });
};
TRY(stream.write_entire_buffer(signature));
TRY(write_value(made_by_version));
TRY(write_value(minimum_version));
TRY(write_value(general_purpose_flags.flags));
TRY(write_value(compression_method));
TRY(write_value(modification_time));
TRY(write_value(modification_date));
TRY(write_value(crc32));
TRY(write_value(compressed_size));
TRY(write_value(uncompressed_size));
TRY(write_value(name_length));
TRY(write_value(extra_data_length));
TRY(write_value(comment_length));
TRY(write_value(start_disk));
TRY(write_value(internal_attributes));
TRY(write_value(external_attributes));
TRY(write_value(local_file_header_offset));
if (name_length > 0)
stream.write_or_error({ name, name_length });
TRY(stream.write_entire_buffer({ name, name_length }));
if (extra_data_length > 0)
stream.write_or_error({ extra_data, extra_data_length });
TRY(stream.write_entire_buffer({ extra_data, extra_data_length }));
if (comment_length > 0)
stream.write_or_error({ comment, comment_length });
TRY(stream.write_entire_buffer({ comment, comment_length }));
return {};
}
[[nodiscard]] size_t size() const
@ -202,25 +210,30 @@ struct [[gnu::packed]] LocalFileHeader {
return true;
}
void write(OutputStream& stream) const
ErrorOr<void> write(Core::Stream::Stream& stream) const
{
stream.write_or_error(signature);
stream << minimum_version;
stream << general_purpose_flags.flags;
stream << compression_method;
stream << modification_time;
stream << modification_date;
stream << crc32;
stream << compressed_size;
stream << uncompressed_size;
stream << name_length;
stream << extra_data_length;
auto write_value = [&stream](auto value) {
return stream.write_entire_buffer({ &value, sizeof(value) });
};
TRY(stream.write_entire_buffer(signature));
TRY(write_value(minimum_version));
TRY(write_value(general_purpose_flags.flags));
TRY(write_value(compression_method));
TRY(write_value(modification_time));
TRY(write_value(modification_date));
TRY(write_value(crc32));
TRY(write_value(compressed_size));
TRY(write_value(uncompressed_size));
TRY(write_value(name_length));
TRY(write_value(extra_data_length));
if (name_length > 0)
stream.write_or_error({ name, name_length });
TRY(stream.write_entire_buffer({ name, name_length }));
if (extra_data_length > 0)
stream.write_or_error({ extra_data, extra_data_length });
TRY(stream.write_entire_buffer({ extra_data, extra_data_length }));
if (compressed_size > 0)
stream.write_or_error({ compressed_data, compressed_size });
TRY(stream.write_entire_buffer({ compressed_data, compressed_size }));
return {};
}
};
@ -254,12 +267,13 @@ private:
class ZipOutputStream {
public:
ZipOutputStream(OutputStream&);
void add_member(ZipMember const&);
void finish();
ZipOutputStream(NonnullOwnPtr<Core::Stream::Stream>);
ErrorOr<void> add_member(ZipMember const&);
ErrorOr<void> finish();
private:
OutputStream& m_stream;
NonnullOwnPtr<Core::Stream::Stream> m_stream;
Vector<ZipMember> m_members;
bool m_finished { false };