These optional output parameters weren't used when these function were
originally added so they were most likely included just in case someone
would want to use them in the future, but that was 10 years ago now and
they still haven't been used yet, so it's unlikely that they'll be used
in the foreseeable future and call sites as well as the implementation
can instead be simplified by removing them.
The repeated sequence of allocating a CharString and CharStringByteSink,
before calling some function that writes into this, can be moved into a
single shared helper function which then is used to give all ulocimp.h
functions that write to ByteSink an overload that instead returns a
CharString, to make call sites look like perfectly normal C++ code.
Some of this code was originally written as C code and some of this code
was originally written as C++ code but made to resemble the then already
existing code that had once been C code. Changing it all to normal C++
now will make it easier and safer to work with going forward.
· Use unnamed namespace instead of static.
· Use reference instead of non-nullable pointer.
· Use bool instead of UBool.
· Use constexpr for static data.
· Use U_EXPORT instead of U_CAPI or U_CFUNC.
· Use the default calling convention instead of U_EXPORT2.
These wrappers that call ulocimp_getSubtags() to get only one particular
subtag and then return that as icu::CharString will be convenient for
replacing code that currently calls the uloc_get*() functions writing
into a fixed size buffer.
These functions now no longer have any other callers so they can be made
internal to the compilation unit of ulocimp_getSubtags(), thus bringing
them back to how they originally were intended to be used (and making
the comment above them true once again).
This also makes it possible to remove the temporary icu::CharString
objects that previously were returned to callers and instead write
directly to icu::ByteSink, making the code both simpler and less
wasteful (also that how this was once intended).
The logic for parsing a localeID string into its constituent subtags is
currently repeated over and over again in each one of the uloc_get*()
functions, so that calling all these functions one after the other in
order to get all the subtags does the parsing all over again from the
beginning for each function call.
In order to avoid having to do this parsing over and over again, a lot
of code instead has its own copy of the parsing logic in order to call
the underlying ulocimp_get*() functions directly for lower runtime cost
at the price of increased code complexity and repetition.
This new ulocimp_getSubtags() function, which writes natively to
icu::ByteSink and has a convenience wrapper to write to icu::CharString,
removes the repeated code from the uloc_get*() functions and makes it
possible to update all code that calls the ulocimp_get*() functions.
Change testdata/likelySubtags.txt to consider FAIL line
ICU-20777 Fix Java Tests
ICU-20777 Fix all issues
ICU-20777 Incase timeout
ICU-20777
ICU-20777 Skip Data Driven test
This eliminates the need for a scratch buffer in Locale::getKeywordValue()
and also the need for counting bytes required in uloc_getKeywordValue(),
something that ByteSink will now handle correctly.
By always calling the dynamic memory allocation implementation directly
instead, the fixed memory buffer boundary gets pushed one step further
towards the edges.
By always calling the dynamic memory allocation implementation directly
instead, the fixed memory buffer boundary gets pushed one step further
towards the edges.
By always calling the dynamic memory allocation implementation directly
instead, the fixed memory buffer boundary gets pushed one step further
towards the edges.
This eliminates the need for the fixed size scratch buffer inside of
locale_set_default_internal() and also eliminates the need for counting
bytes, something that ByteSink and CharString now will handle correctly,
when needed.
None of this should have any externally visible effect (apart from
removing the arbitrary size limit imposed by the fixed size scratch
buffer), it's all about cleaning up implementation internals.
This eliminates the need for scratch buffers in any code path that ends
with these functions and also eliminates the need for counting bytes,
something that ByteSink will now handle correctly when needed.
Existing calls to uloc_addLikelySubtags() and uloc_minimizeSubtags()
throughout ICU4C implementation code are also updated to instead use
either the Locale or ulocimp_* functions with the new API.
None of this should have any externally visible effect, it's all about
cleaning up implementation internals.
This eliminates the need for a scratch buffer in Locale::forLanguageTag()
and also the need for counting bytes required in uloc_forLanguageTag(),
something that ByteSink will now handle correctly.
This eliminates the need for a scratch buffer in Locale::toLanguageTag()
and also the need for counting bytes required in uloc_toLanguageTag(),
something that ByteSink will now handle correctly and thereby
eliminating the bug where too few bytes required was returned.
* ICU-20119 ICU4C 63 API promotion, work in progress.
* ICU-20119 ICU4C 63 API promotion, work in progress.
* ICU-20119 ICU 63 API promotion & change report
* ICU-20119 ICU4C 63 API change report, new draft, still work in progress.
* ICU-20119 ICU4C 63 API change report, another new draft, still work in progress.
* ICU-20119 ICU4C 63 API change report, another new draft.
* ICU-20119 ICU4C 63 API change report, after @preview revert. Hopefully the final rev.
* ICU-20119 ICU4C 63 API change report, clean up a few minor html errors.
