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AK: Rename Stream::{read,write} to Stream::{read_some,write_some}

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Similar to POSIX read, the basic read and write functions of AK::Stream
do not have a lower limit of how much data they read or write (apart
from "none at all").

Rename the functions to "read some [data]" and "write some [data]" (with
"data" being omitted, since everything here is reading and writing data)
to make them sufficiently distinct from the functions that ensure to
use the entire buffer (which should be the go-to function for most
usages).

No functional changes, just a lot of new FIXMEs.
This commit is contained in:
Tim Schumacher 2023-02-24 22:38:01 +01:00 • committed by Linus Groh
parent 1d5b45f7d9
commit d5871f5717
109 changed files with 474 additions and 329 deletions
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30
Userland/Libraries/LibCompress/Gzip.cpp
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@ -60,7 +60,7 @@ GzipDecompressor::~GzipDecompressor()
m_current_member.clear();
}
ErrorOr<Bytes> GzipDecompressor::read(Bytes bytes)
ErrorOr<Bytes> GzipDecompressor::read_some(Bytes bytes)
{
size_t total_read = 0;
while (total_read < bytes.size()) {
@ -70,14 +70,15 @@ ErrorOr<Bytes> GzipDecompressor::read(Bytes bytes)
auto slice = bytes.slice(total_read);
if (m_current_member) {
auto current_slice = TRY(current_member().m_stream->read(slice));
auto current_slice = TRY(current_member().m_stream->read_some(slice));
current_member().m_checksum.update(current_slice);
current_member().m_nread += current_slice.size();
if (current_slice.size() < slice.size()) {
// FIXME: This should read the entire span.
LittleEndian<u32> crc32, input_size;
TRY(m_input_stream->read(crc32.bytes()));
TRY(m_input_stream->read(input_size.bytes()));
TRY(m_input_stream->read_some(crc32.bytes()));
TRY(m_input_stream->read_some(input_size.bytes()));
if (crc32 != current_member().m_checksum.digest())
return Error::from_string_literal("Stored CRC32 does not match the calculated CRC32 of the current member");
@ -95,7 +96,7 @@ ErrorOr<Bytes> GzipDecompressor::read(Bytes bytes)
continue;
} else {
auto current_partial_header_slice = Bytes { m_partial_header, sizeof(BlockHeader) }.slice(m_partial_header_offset);
auto current_partial_header_data = TRY(m_input_stream->read(current_partial_header_slice));
auto current_partial_header_data = TRY(m_input_stream->read_some(current_partial_header_slice));
m_partial_header_offset += current_partial_header_data.size();
if (is_eof())
@ -115,16 +116,18 @@ ErrorOr<Bytes> GzipDecompressor::read(Bytes bytes)
return Error::from_string_literal("Header is not supported by implementation");
if (header.flags & Flags::FEXTRA) {
// FIXME: This should read the entire span.
LittleEndian<u16> subfield_id, length;
TRY(m_input_stream->read(subfield_id.bytes()));
TRY(m_input_stream->read(length.bytes()));
TRY(m_input_stream->read_some(subfield_id.bytes()));
TRY(m_input_stream->read_some(length.bytes()));
TRY(m_input_stream->discard(length));
}
auto discard_string = [&]() -> ErrorOr<void> {
char next_char;
do {
TRY(m_input_stream->read({ &next_char, sizeof(next_char) }));
// FIXME: This should read the entire span.
TRY(m_input_stream->read_some({ &next_char, sizeof(next_char) }));
} while (next_char);
return {};
@ -137,8 +140,9 @@ ErrorOr<Bytes> GzipDecompressor::read(Bytes bytes)
TRY(discard_string());
if (header.flags & Flags::FHCRC) {
// FIXME: This should read the entire span.
LittleEndian<u16> crc16;
TRY(m_input_stream->read(crc16.bytes()));
TRY(m_input_stream->read_some(crc16.bytes()));
// FIXME: we should probably verify this instead of just assuming it matches
}
@ -170,7 +174,7 @@ ErrorOr<ByteBuffer> GzipDecompressor::decompress_all(ReadonlyBytes bytes)
auto buffer = TRY(ByteBuffer::create_uninitialized(4096));
while (!gzip_stream->is_eof()) {
auto const data = TRY(gzip_stream->read(buffer));
auto const data = TRY(gzip_stream->read_some(buffer));
TRY(output_stream.write_entire_buffer(data));
}
@ -181,7 +185,7 @@ ErrorOr<ByteBuffer> GzipDecompressor::decompress_all(ReadonlyBytes bytes)
bool GzipDecompressor::is_eof() const { return m_input_stream->is_eof(); }
ErrorOr<size_t> GzipDecompressor::write(ReadonlyBytes)
ErrorOr<size_t> GzipDecompressor::write_some(ReadonlyBytes)
{
return Error::from_errno(EBADF);
}
@ -191,12 +195,12 @@ GzipCompressor::GzipCompressor(MaybeOwned<Stream> stream)
{
}
ErrorOr<Bytes> GzipCompressor::read(Bytes)
ErrorOr<Bytes> GzipCompressor::read_some(Bytes)
{
return Error::from_errno(EBADF);
}
ErrorOr<size_t> GzipCompressor::write(ReadonlyBytes bytes)
ErrorOr<size_t> GzipCompressor::write_some(ReadonlyBytes bytes)
{
BlockHeader header;
header.identification_1 = 0x1f;