b7ef5a699c
* Get rid of non-existent vectorclass * Move FastMemcpy to contribs * Restore comments * Disable FastMemcpy on non-Linux * Fix cmake file * Don't build FastMemcpy for ARM64 * Replace FastMemcpy submodule with its contents * Fix cmake file * Move widechar_width to contrib/ * Move sumbur to contrib/ * Move consistent-hashing to contrib/ * Fix UBSan tests
1.4 KiB
url: https://github.com/ridiculousfish/widecharwidth commit: 62edda3d435392bf84c7db59f01f53370bbb1715
widecharwidth is a Python script that outputs a C++11 header-only implementation of wcwidth(), by downloading and parsing the latest UnicodeData.txt, EastAsianWidth.txt, and emoji-data.txt.
Usage
You may directly copy and use the included widechar_width.h.
This header contains a single public function widechar_wcwidth(). This returns either a positive width value (1 or 2), or a negative value such as widechar_private_use. Note that there are several possible negative return values, to distinguish among different scenarios.
If you aren't sure how to handle negative return values, try this table:
| return value | width |
|---|---|
widechar_nonprint |
0 |
widechar_combining |
0 |
widechar_ambiguous |
1 |
widechar_private_use |
1 |
widechar_unassigned |
0 |
widechar_widened_in_9 |
2 (or maybe 1, renderer dependent) |
Regenerating the header
To regenerate the header, run make. This will download and parse the relevant files, and run tests.
License
widecharwidth and its output headers are released into the public domain. They may be used for any purpose without requiring attribution, or under the CC0 license if public domain is not available. See included LICENSE.