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82 lines
2.5 KiB
Diff
82 lines
2.5 KiB
Diff
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This patch is taken from the version of ICU in Google's Chromium.
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See: https://chromium.googlesource.com/chromium/deps/icu/+/10834e84d250eb31a73496bfdb7923eaa43ead51
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diff --git a/intl/icu/source/common/putil.cpp b/intl/icu/source/common/putil.cpp
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--- a/intl/icu/source/common/putil.cpp
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+++ b/intl/icu/source/common/putil.cpp
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@@ -965,16 +965,25 @@ static char* searchForTZFile(const char*
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}
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}
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}
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}
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closedir(dirp);
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return result;
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}
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#endif
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+
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+U_CAPI void U_EXPORT2
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+uprv_tzname_clear_cache()
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+{
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+#if defined(CHECK_LOCALTIME_LINK) && !defined(DEBUG_SKIP_LOCALTIME_LINK)
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+ gTimeZoneBufferPtr = NULL;
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+#endif
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+}
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+
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U_CAPI const char* U_EXPORT2
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uprv_tzname(int n)
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{
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const char *tzid = NULL;
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#if U_PLATFORM_USES_ONLY_WIN32_API
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tzid = uprv_detectWindowsTimeZone();
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if (tzid != NULL) {
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diff --git a/intl/icu/source/common/putilimp.h b/intl/icu/source/common/putilimp.h
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--- a/intl/icu/source/common/putilimp.h
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+++ b/intl/icu/source/common/putilimp.h
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@@ -478,16 +478,22 @@ U_INTERNAL int32_t U_EXPORT2 uprv_timez
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* tzname(1) Three-letter DST zone name derived from TZ environment
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* variable. E.g., "PDT". If DST zone is omitted from TZ,
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* tzname(1) is an empty string.
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* @internal
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*/
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U_INTERNAL const char* U_EXPORT2 uprv_tzname(int n);
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/**
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+ * Reset the global tzname cache.
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+ * @internal
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+ */
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+U_INTERNAL void uprv_tzname_clear_cache();
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+
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+/**
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* Get UTC (GMT) time measured in milliseconds since 0:00 on 1/1/1970.
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* This function is affected by 'faketime' and should be the bottleneck for all user-visible ICU time functions.
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* @return the UTC time measured in milliseconds
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* @internal
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*/
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U_INTERNAL UDate U_EXPORT2 uprv_getUTCtime(void);
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/**
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diff --git a/intl/icu/source/i18n/timezone.cpp b/intl/icu/source/i18n/timezone.cpp
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--- a/intl/icu/source/i18n/timezone.cpp
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+++ b/intl/icu/source/i18n/timezone.cpp
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@@ -453,16 +453,18 @@ TimeZone::detectHostTimeZone()
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int32_t rawOffset = 0;
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const char *hostID;
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// First, try to create a system timezone, based
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// on the string ID in tzname[0].
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uprv_tzset(); // Initialize tz... system data
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+ uprv_tzname_clear_cache();
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+
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// Get the timezone ID from the host. This function should do
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// any required host-specific remapping; e.g., on Windows this
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// function maps the Date and Time control panel setting to an
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// ICU timezone ID.
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hostID = uprv_tzname(0);
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// Invert sign because UNIX semantics are backwards
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rawOffset = uprv_timezone() * -U_MILLIS_PER_SECOND;
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