Get XLocaleMatcher ready for replacing the LocaleMatcher code.
More simplifications beyond ICU-20330 PR #409, smaller data, some more optimizations.
New API ready to be moved over.
- less work for region partitions distance lookup:
- encode each array of single-character partition strings as one string
- look up each desired partition only once, not for each (desired, supported) pair
- look up the * fallback region distance only for the first mismatch, not for each non-matching pair
- skip region distance lookup if minRegionDistance>=remainingThreshold
- locale distance table: remove subtables that contain only *-* with default script/region distance
- mark intermediate subtag matches via last-character bit 7, not also with a match value
- likely subtags data: prune trailing *-only levels, and skip *-only script levels; likely subtags perf test
- likely subtags: skip_script=1; LSR.indexForRegion(ill-formed)=0 not negative
- likely subtags small optimization: array lookup for first letter of language subtag
- defaultDemotionPerDesiredLocale=distance(en, en-GB)
- favor=script: still reject a script mismatch
- if an explicit default locale is given, prefer that (by LSR), not the first supported locale
- XLocaleMatcher.Builder: copy supported locales into a List not a Set to preserve input indexes; duplicates are harmless
- match by LSR only, not exact locale match; results consistent with no fastpath, simpler, sometimes a little slower
- internal getBestMatch() returns just the suppIndex
- store the best desired locale & index in an LSR iterator
- make an LSR from Locale without ULocale detour
- adjust the XLocaleMatcher API as proposed; remove unused internal methods; clean up LocalePriorityList docs
Builds res_index.txt based on directory glob minus aliases read from deprecates XML file.
In ICU 64, please use the ICU Data Build Tool instead of reslocal.mk for locale filtering.
This change was introduced by the following commit e9946ec98e.
However, there's really no reason why the Windows UWP version should require the icudtl.dat file
to be in the same directory as the icuuc.dll file.
Remove the dependencies from the ICU library code on static constructors
that were introduced by using std::mutex and condition variables. The
mutexes are lazily initialized by embedding them as local static variables
in getter functions, and relying on the C++ compiler/runtime to do thread
safe initialization of them.
- see also ICU-20062
- add a `-B` option to the two python invocations on Windows
- set PYTHONDONTWRITEBYTECODE in configure.ac and icudefs.mk.in
Co-authored-by: Fredrik Roubert <roubert@google.com>
- If icu/source/data/locales/root.txt missing, skip
python rules.mk generation.
- Also, create build directories properly as needed
- Also includes noise changes to configure
(configure was probably generated using unreleased
autoconf 2.70 or 2.69 + patches)
- eac8f4b31a did not
regen configure properly, so BUILDTOOL_OPTS is now
ICU_DATA_BUILDTOOL_OPTS
- If icu/source/data/locales/root.txt missing, skip
python rules.mk generation.
- Also, create build directories properly as needed
- Also includes noise changes to configure
(configure was probably generated using unreleased
autoconf 2.70 or 2.69 + patches)
- eac8f4b31a did not
regen configure properly, so BUILDTOOL_OPTS is now
ICU_DATA_BUILDTOOL_OPTS
