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951793ea84
This fixes a bug where a keyboard didn't show up in the language dropdown if the first language it specified wasn't a normalized language tag. Previously in that case we added a custom keyboard with whatever language tag the keyboard specified. With this change we now continue to use the first language of the first keyboard but normalize it. Since the selection of the language now happens a little earlier it is slightly possible that there will be unexpected side effects that didn't show up in my testing. Fixes: #14465
74 lines
2.7 KiB
Python
74 lines
2.7 KiB
Python
#!/usr/bin/python3
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import sys
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from keyman_config.bcp47tag import Bcp47Tag
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try:
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from keyman_config.standards.lang_tags_map import LangTagsMap
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except ImportError:
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# Not localized because we don't have access yet to _(). However,
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# this exception should only ever happen in development environment.
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print('Can not find lang_tags_map.py. Did you run "make"?')
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sys.exit(3)
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class CanonicalLanguageCodeUtils():
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@staticmethod
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def findBestTag(tag, addRegion, addScriptIfNotSuppressed):
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"""
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Find a language code with appropriate script and region subtags</summary>
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This will canonicalize known tags, then apply rules to ensure script subtag
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is present if not suppressed, and add a default region if none given.
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"""
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# See also windows/src/global/delphi/general/Keyman.System.CanonicalLanguageCodeUtils.pas
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if not tag:
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return None
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bcp47Tag = Bcp47Tag.create(tag)
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if not bcp47Tag:
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return None
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# Special case for IPA keyboards otherwise we'd end up with und-Zyyy-fonipa
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if bcp47Tag.language == 'und' and bcp47Tag.variant and bcp47Tag.variant[0] == 'fonipa':
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return 'und-fonipa'
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# First, canonicalize any unnecessary ISO639-3 codes
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bcp47Tag.language = LangTagsMap.translateISO6393ToBCP47(bcp47Tag.language)
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# Lookup the tag first, canonicalize to the base tag for known tags
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result = LangTagsMap.lookupAllTags(bcp47Tag.tag)
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if result:
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bcp47Tag.tag = result
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langTag = LangTagsMap.lookupLangTags(bcp47Tag.tag)
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if not langTag:
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# Not a known tag but perhaps it's a custom language
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# We'll make no further assumptions
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return bcp47Tag.tag
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# Then, lookup the lang-script and see if there is a suppress-script
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# Or add the default script in if it is missing and not a suppress-script
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if not bcp47Tag.script and not langTag['suppress'] and addScriptIfNotSuppressed:
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bcp47Tag.script = langTag['script']
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# Add the region if not specified
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if not bcp47Tag.region and addRegion:
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bcp47Tag.region = langTag['region']
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return bcp47Tag.tag
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@staticmethod
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def normalize_language(supportedLanguages, language):
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if len(supportedLanguages) <= 0:
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return ''
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if not language:
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language = supportedLanguages[0]['id']
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language = CanonicalLanguageCodeUtils.findBestTag(language, False, False)
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for supportedLanguage in supportedLanguages:
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tag = CanonicalLanguageCodeUtils.findBestTag(supportedLanguage['id'], False, False)
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if tag == language:
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return tag
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return None
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