uloc_forLanguageTag has a few mapping tables to map grandfathered
language tags and deprecated language subtags to their preferred or
modern values.
Update them based on the latest version of the IANA
language subtag registry. [1]
Five grandfathered tags without a preferred value are still mapped to
what ICU has mapped them to for backward compatibility until the
wisdom of continuing to do so is reviewed.
In addition, map redundant language tags to their preferred values
regardless of whether they're followed by other subtags or not. (e.g.
zh-yue vs zh-yue-u-co-pinyin) .
Similary, ja-latn-hepburn-heploc is mapped to ja-latn-alaic97 (the
variant subtag 'hepburn-helploc' with the prefix 'ja-latn' has the
preferred value, 'alaic97') .
Update the mapping for deprecated language subtags (e.g. 'jw' to
'jv' and a bunch of 3-letter language codes).
Add a new table for deprecated region subtags to map them to their
modern values. (e.g. 'DD' to 'DE').
Add a new test case for deprecated language and region mapping and
a few more cases for updated grandfathered and redundant tag mapping.
[1]
https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry
* ICU-20119 Update and fixes for the following BRS tasks:
- Update urename.h
- Test uconfig.h variations
* ICU-20119 Updates copyright scanner script exclusions: don't scan ./git/*.
* ICU-20119 Changes in reply to comments for pull requst #165.
* Fix MSVC C4251: Need to export explicit template instantiation for std::atomic<int32_t> when building DLLs
* Some more warning fixes for MSVC as well.
* Can't use static_cast in C file.
This gets rid of those fixed buffers that caused ICU-13417 to be filed
in the first place, those that prevent handling language tags with very
large amounts of keywords.
A number of fixed buffers will still remain in uloc_tag.cpp (and
elsewhere in the locale handling code) for the time being, but this
change is a necessary first step in cleaning up this code and will
alleviate the most pressing problem encountered by ICU4C users.
An off-by-one error in _getKeywords() caused uloc_canonicalize() to not
write out the final keyword value in case the result would fill up the
buffer exactly, resulting in U_STRING_NOT_TERMINATED_WARNING.
In an effort to reduce the number of warnings that building ICU emits, we should set the following define for ICU4C library code when building using MSVC/VisualStudio: _HAS_EXCEPTIONS=0
This tells the MSVC implementation of the STL that exceptions should not be used - which is fine for ICU4C library code, as the library code does not make use of exceptions at all.
- Use stack allocated UResouceBundle to reduce number of calls to malloc (in a method that can't report back an error if Out-Of-Memory [OOM] happens).
- Use LocalUResourcePointer for automatic clean-up of UResouceBundle.
- Use uprv_strdup instead of calloc + strcpy.
- Changes comments, formatting, etc.
* ICU-20104 Fix lazy init in Indian Calendar. Now matches other calendars.
* ICU-20104 export class IndianCalendar for testing.
* ICU-20104 shot-in-the-dark Windows build experiment.
* ICU-20104 fix memory leak in added test.
The ICU4C sample "date" program just uses the "default" ICU locale. This change lets you pass in an explicit locale argument for testing on platforms like Windows that don't have/use the environment variable "LC_ALL".
* ICU-20140 Allow duplicated keys in U-extension per RFC 6067
RFC 6067 [1] does allow duplicate keywords, but ICU4C's
uloc_forLanguageCode rejects it as invalid.
Change it to accept duplicate keywords and honor only the
1st one while ignoring subsequent ones per RFC 6067.
[1] Unicode extension to BCP 47:
https://tools.ietf.org/html/rfc6067
* ICU-20140 Add ICU4J test and tweak ICU4C test
ICU4J test diverges from ICU4C tests:
1. Handling of duplicate variants in ICU4J seem to be wrong:
https://unicode-org.atlassian.net/browse/ICU-20148
2. ULocale.forLanguageTag only throws NullPointException so
that ICU4C's test for duplicate attributes cannot be ported.
