1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
#!/usr/bin/python3
import sys
from keyman_config.bcp47tag import Bcp47Tag
try:
from keyman_config.standards.lang_tags_map import LangTagsMap
except ImportError:
# Not localized because we don't have access yet to _(). However,
# this exception should only ever happen in development environment.
print('Can not find lang_tags_map.py. Did you run "make"?')
sys.exit(3)
class CanonicalLanguageCodeUtils():
@staticmethod
def findBestTag(tag, addRegion, addScriptIfNotSuppressed):
"""
Find a language code with appropriate script and region subtags</summary>
This will canonicalize known tags, then apply rules to ensure script subtag
is present if not suppressed, and add a default region if none given.
"""
# See also windows/src/global/delphi/general/Keyman.System.CanonicalLanguageCodeUtils.pas
if not tag:
return None
bcp47Tag = Bcp47Tag.create(tag)
if not bcp47Tag:
return None
# Special case for IPA keyboards otherwise we'd end up with und-Zyyy-fonipa
if bcp47Tag.language == 'und' and bcp47Tag.variant and bcp47Tag.variant[0] == 'fonipa':
return 'und-fonipa'
# First, canonicalize any unnecessary ISO639-3 codes
bcp47Tag.language = LangTagsMap.translateISO6393ToBCP47(bcp47Tag.language)
# Lookup the tag first, canonicalize to the base tag for known tags
result = LangTagsMap.lookupAllTags(bcp47Tag.tag)
if result:
bcp47Tag.tag = result
langTag = LangTagsMap.lookupLangTags(bcp47Tag.tag)
if not langTag:
# Not a known tag but perhaps it's a custom language
# We'll make no further assumptions
return bcp47Tag.tag
# Then, lookup the lang-script and see if there is a suppress-script
# Or add the default script in if it is missing and not a suppress-script
if not bcp47Tag.script and not langTag['suppress'] and addScriptIfNotSuppressed:
bcp47Tag.script = langTag['script']
# Add the region if not specified
if not bcp47Tag.region and addRegion:
bcp47Tag.region = langTag['region']
return bcp47Tag.tag
|
