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These APIs are only used by userland, and String is OOM-infallible,
so let's just ifdef it out of the Kernel.
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This change also applys to to_uint
On i686 u64 == long long but on x86_64 u64 == long. Therefor on either
arch, one of the instantiations is missed. This change makes sure that
all integer types have an instantiation.
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We already know the length of these substrings, so there's no need to
check their lengths using strlen in the StringView(char*) constructor.
This patch also removes an accidental 1-byte OOB read that was left over
from when this method received null-terminated char pointers instead of
string views, as well removes the unnecessary lambda call (two of the
checks were impossible, and this was only called in one place, so we can
just inline it)
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This removes the awkward String::replace API which was the only String
API which mutated the String and replaces it with a new immutable
version that returns a new String with the replacements applied. This
also fixes a couple of UAFs that were caused by the use of this API.
As an optimization an equivalent StringView::replace API was also added
to remove an unnecessary String allocations in the format of:
`String { view }.replace(...);`
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This was needlessly copying StringView arguments, and was also using
strstr internally, which meant it was doing a bunch of unnecessary
strlen calls on it. This also moves the implementation to StringUtils
to allow API consistency between String and StringView.
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This implementation preserves consecutive spaces in the orginal string.
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Problem:
- New `all_of` implementation takes the entire container so the user
does not need to pass explicit begin/end iterators. This is unused
except is in tests.
Solution:
- Make use of the new and more user-friendly version where possible.
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This replaces all remaining usages of ctype.h in AK with
CharacterTypes.h.
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This implements StringUtils::find_any_of() and uses it in
String::find_any_of() and StringView::find_any_of(). All uses of
find_{first,last}_of have been replaced with find_any_of(), find() or
find_last(). find_{first,last}_of have subsequently been removed.
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This implements the StringView::find_all() method by re-implemeting the
current method existing for String in StringUtils, and using that
implementation for both String and StringView.
The rewrite uses memmem() instead of strstr(), so the String::find_all()
argument type has been changed from String to StringView, as the null
byte is no longer required.
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This patch reimplements the StringView::find methods in StringUtils, so
they can also be used by String. The methods now also take an optional
start parameter, which moves their API in line with String's respective
methods.
This also implements a StringView::find_ast(char) method, which is
currently functionally equivalent to find_last_of(char). This is because
find_last_of(char) will be removed in a further commit.
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This behavior might not always be desirable, and so this patch adds a
way to disable it.
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The methods added make it possible to use the trim mechanism with
specified characters, unlike trim_whitespace(), which uses predefined
characters.
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SPDX License Identifiers are a more compact / standardized
way of representing file license information.
See: https://spdx.dev/resources/use/#identifiers
This was done with the `ambr` search and replace tool.
ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
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We had an unusual optimization in AK::StringView where constructing
a StringView from a String would cause it to remember the internal
StringImpl pointer of the String.
This was used to make constructing a String from a StringView fast
and copy-free.
I tried removing this optimization and indeed we started seeing a
ton of allocation traffic. However, all of it was due to a silly
pattern where functions would take a StringView and then go on
to create a String from it.
I've gone through most of the code and updated those functions to
simply take a String directly instead, which now makes this
optimization unnecessary, and indeed a source of bloat instead.
So, let's get rid of it and make StringView a little smaller. :^)
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Previously this would create new to_lowercase()'d strings from the
needle and the haystack. This generated a huge amount of malloc
traffic in some programs.
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This is basically just for consistency, it's quite strange to see
multiple AK container types next to each other, some with and some
without the namespace prefix - we're 'using AK::Foo;' a lot and should
leverage that. :^)
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This is an improved version of WrapperGenerator's snake_name(), which
seems like the kind of thing that could be useful elsewhere but would
end up getting duplicated - so let's add this to AK::String instead,
like to_{lowercase,uppercase}().
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I personally mistook `find_first_of(StringView)` to be analogous to this
so let's add a `find()` method that actually searches the string.
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+Tests!
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Fixes part of #4607.
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Personally I found this unintuitive at first, but it is in line with
strtol(), Python's int() or JavaScript's parseInt(), so I guess it makes
sense.
Fixes #4097.
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It would incorrectly return false if needle was at the end the string.
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Also, rewrite StringUtils::match(), because the old implementation was
fairly broken, e.g. "acdcxb" would *not* match "a*?b".
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No behaviour change; also patches use of `String::TrimMode` in LibJS.
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Get rid of the weird old signature:
- int StringType::to_int(bool& ok) const
And replace it with sensible new signature:
- Optional<int> StringType::to_int() const
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FileSystemPath::has_extension was jumping through hoops and allocating
memory to do a case insensitive comparison needlessly. Extend the
existing String::ends_with method to allow the caller to specify the
case sensitivity required.
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Centralizing so it can be used by other string implementations
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New method to convert hex string unsigned integer.
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And share the code with String by moving the logic to StringUtils. :^)
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Provide wrappers in String and StringView. Add some tests for the
implementations.
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Provide wrappers in the String and StringView classes, and add some tests.
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