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Introduce unicode::getScriptClassFromLanguageTag()

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Change-Id: Ifb932ff2aabc5767571433627314f0b29c35c471
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/140953
Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Jenkins
This commit is contained in:
Eike Rathke
2022-10-05 01:29:02 +02:00
parent 384167ab85
commit ecc30ac20f
2 changed files with 41 additions and 0 deletions
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32
i18nutil/source/utility/unicode.cxx
View File

@@ -24,6 +24,7 @@
#include <i18nutil/unicode.hxx> #include <i18nutil/unicode.hxx>
#include <sal/log.hxx> #include <sal/log.hxx>
#include <unicode/numfmt.h> #include <unicode/numfmt.h>
#include <unicode/uchar.h>
#include "unicode_data.h" #include "unicode_data.h"
#include <rtl/character.hxx> #include <rtl/character.hxx>
#include <o3tl/string_view.hxx> #include <o3tl/string_view.hxx>
@@ -190,6 +191,37 @@ sal_Int16 unicode::getScriptClassFromUScriptCode(UScriptCode eScript)
return nRet; return nRet;
} }
sal_Int16 unicode::getScriptClassFromLanguageTag( const LanguageTag& rLanguageTag )
{
static UScriptCode nMaxScript = static_cast<UScriptCode>(u_getIntPropertyMaxValue(UCHAR_SCRIPT));
constexpr int32_t nBuf = 42;
UScriptCode aBuf[nBuf];
if (rLanguageTag.hasScript())
{
aBuf[0] = static_cast<UScriptCode>(u_getPropertyValueEnum( UCHAR_SCRIPT,
OUStringToOString( rLanguageTag.getScript(), RTL_TEXTENCODING_ASCII_US).getStr()));
}
else
{
OUString aName;
if (rLanguageTag.getCountry().isEmpty())
aName = rLanguageTag.getLanguage();
else
aName = rLanguageTag.getLanguage() + "-" + rLanguageTag.getCountry();
UErrorCode status = U_ZERO_ERROR;
const int32_t nScripts = uscript_getCode(
OUStringToOString( aName, RTL_TEXTENCODING_ASCII_US).getStr(),
aBuf, nBuf, &status);
// U_BUFFER_OVERFLOW_ERROR would be set with too many scripts for buffer
// and required capacity returned, but really..
if (nScripts == 0 || !U_SUCCESS(status))
return css::i18n::ScriptType::LATIN;
}
if (aBuf[0] > nMaxScript)
return css::i18n::ScriptType::COMPLEX;
return getScriptClassFromUScriptCode( aBuf[0]);
}
OString unicode::getExemplarLanguageForUScriptCode(UScriptCode eScript) OString unicode::getExemplarLanguageForUScriptCode(UScriptCode eScript)
{ {
OString sRet; OString sRet;

9
include/i18nutil/unicode.hxx
View File

@@ -82,6 +82,15 @@ public:
//Format a number as a percentage according to the rules of the given //Format a number as a percentage according to the rules of the given
//language, e.g. 100 -> "100%" for en-US vs "100 %" for de-DE //language, e.g. 100 -> "100%" for en-US vs "100 %" for de-DE
static OUString formatPercent(double dNumber, const LanguageTag& rLangTag); static OUString formatPercent(double dNumber, const LanguageTag& rLangTag);
/** Map a LanguageTag's language ISO 639 code or script ISO 15924 code or
language-script or locale to Latin/Asian/Complex/Weak. If more than one
script is used with a language(-country) tag then the first (default)
script is mapped for that language.
@return a css::i18n::ScriptType value.
*/
static sal_Int16 getScriptClassFromLanguageTag(const LanguageTag& rLanguageTag);
}; };
/* /*