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#!/usr/bin/env python3
"""
Display new wide unicode point values, by version.
For example::
"5.0.0": [
12752,
12753,
12754,
...
Means that chr(12752) through chr(12754) are new WIDE values
for Unicode version 5.0.0, and were not WIDE values for the
previous version (4.1.0).
"""
# std imports
import sys
import json
# local
from wcwidth import WIDE_EASTASIAN, _bisearch
def main():
"""List new WIDE characters at each unicode version."""
versions = list(WIDE_EASTASIAN.keys())
results = {}
for version in versions:
prev_idx = versions.index(version) - 1
if prev_idx == -1:
continue
previous_version = versions[prev_idx]
previous_table = WIDE_EASTASIAN[previous_version]
for value_pair in WIDE_EASTASIAN[version]:
for value in range(*value_pair):
if not _bisearch(value, previous_table):
results[version] = results.get(version, []) + [value]
if '--debug' in sys.argv:
print(f'version {version} has unicode character '
f'0x{value:05x} ({chr(value)}) but previous '
f'version, {previous_version} does not.',
file=sys.stderr)
print(json.dumps(results, indent=4))
if __name__ == '__main__':
main()
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