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Span is roughly modelled on the GSL span<T> type, and is intended
to replace direct access to raw pointers -- especially pointers
that are passed to functions along with a separate size
parameter. It provides low-cost bounds-checked reads and writes,
as well as convenience functions for reading common values
(integers of varying endianness, strings, etc.). While similar to
MemoryReadStream in purpose, Span is superior in cases where
memory is writable, where memory is accessed randomly rather than
sequentially, or where any invalid access should be treated as an
unrecoverable error. It should also be more efficient than a
MemoryReadStream because it is implemented using CRTP, so there is
no runtime overhead from dynamic dispatch.
NamedSpan is an extension of Span which provides enhanced
debugging information when out-of-bounds memory accesses occur.
It allows programmers to name the memory span at construction time,
and it also tracks the offsets of subspans so that the absolute
byte offset of the original memory can be provided in the error
message if an out-of-bounds access occurs.
SpanOwner is similar to ScopedPtr but has awareness of the design
of Span objects, so allows the memory pointed to by the Span object
inside the SpanOwner to be freed when the SpanOwner is freed
without requiring holding a separate pointer to the start of
memory. It also provides some copy semantics, so unlike a ScopedPtr,
SpanOwners can be held by objects in movable containers like
Common::Array -- but note that because there are no move semantics
in C++98, this means that a new, complete memory copy of the
pointed-to data will be created, rather than just a new Span
pointing to the same block of memory, when a container holding a
SpanOwner expands.
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This API is intended for use in cases where C strings come
from untrusted sources like game files, where malformed data
missing the null terminator would cause strlen to read out of
bounds.
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WINTERMUTE: Fix PathUtils and add workaround for mixed separators
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I put scare quotes around "correctly" because I can't swear this is the
intended behaviour of the original interpreter.
I don't think accessing filenames that end with / in the .DCPs is even
defined behaviour, so this is a best guess.
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Fixes #6594
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This reverts commit 1f8667c5d949070035390531e4f10c0f945d7352.
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COMMON: Add replacement to common/algorithm.h
COMMON: Intermediate commit to show doubts.
COMMON: Basic String::replace() methods implemented.
COMMON: Fix typo in the algorithm.h documentation.
COMMON: Fix documentation of String::replace()
COMMON: Fix formatting issues in method signatures.
COMMON: Add assert and reformat loops in str and algorithm.
COMMON: Fix typo in comment.
COMMON: Fix style in string test cases.
COMMON: Add Doxygen documentation to algorithm and String.
COMMON: Add Doxygen documentation to algorithm and String.
COMMON: Add Doxygen documentation to algorithm.
COMMON: Fix style in algorithm comments.
COMMON: Add Doxygen comments to String.
COMMON: Add Doxygen comments to algorithm test function.
COMMON: Add String support for substring replace.
COMMON: Fix string replace to comply with STL
COMMON: Fix documentation on string replace
COMMON: Fix style in string replace
COMMON: Fix unwanted reference problem in String::replace().
COMMON: Fix indentation in comments for replace
COMMON: Fix indentation in replace
COMMON: Fix comments in String::replace to match implementation.
COMMON: Remove assert to allow for not-null-terminated character arrays
COMMON: Add new test for String::replace
COMMON: Fix broken comments on String::replace
COMMON: Fix sharing bug on ensureCapacity
COMMON: Remove superfluous call to makeUnique()
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For SCI engine games, ratios may not be normalised and so to avoid
extra scaling, there needs to be a way to simply check whether a
ratio is 1:1.
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This provides improved feature parity to Common::List and is used
in SCI32 engine.
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This does not fix the actual implementation issues which are present right
now!
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COMMON: Add support for endian-safe reading/writing of int64
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The "making of" video in the Xbox version of Myst III is
unusually long. VideoDecoder::FixedRateVideoTrack::getFrameTime
would trigger an overflow.
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This specific test checked whether the pointer for two static strings have a
different address. Since the specific strings checked had the same "value"
string pooling optimizations will result in them to have the same address and
thus make this test fail. Furthermore, the test seemed completely pointless,
I simply dropped it now.
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The hash function does not necessarily have to conform to one specific algorithm as long as equals/differs is respected.
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We test the various equal_to and hash functions therein.
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Split a few test cases in two.
The resulting file is now better organized.
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tests for parseRenderMode, renderMode2GUIO and getRenderModeCode.
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A few tests for the Huffman decoder.
The encoding is the example from Wikipedia.
This could be improved by someone more knowledgeable by
generating one at runtime or using multiple encodings
which would each contain one edge case.
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find -name '*.h' -or -name '*.cpp' | xargs sed -r -i 's@\(([A-Za-z0-9]+)\*\)@(\1 *)@g'
This seems to have caught some params as well which is not undesirable IMO.
It also caught some strings containing this which is undesirable so I
excluded them manually. (engines/sci/engine/kernel_tables.h)
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This drops the (unused) ability to play based on a list of input blocks. This
was formely only used by the NDS specific VOC streaming code, which has been
removed in 9fa9f68789ef51e078cb8631e06bead13cae13f2.
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It needs the same workaround as our dev tools (see bug #1800764)
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