ICU 4.6 NumberFormat::EStyle enum is gone in ICU 4.8. Adding #if #else to make...

ICU 4.6 NumberFormat::EStyle enum is gone in ICU 4.8. Adding #if #else to make it work across versions.

There was an ICU cleanup (removing all C++ style enums and replacing them with plain C enums). NumberFormat::EStyle had a draft status (from ICU 4.2) and it was cut. Confusion came up because DateFormat::EStyle is stable and won't be removed.

TEST=Compile Chromium with ICU 4.6 and ICU 4.8
BUG=1561
Review URL: http://codereview.chromium.org/7421003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8701 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/extensions/experimental/number-format.cc

@@ -36,6 +36,8 @@
 #include "unicode/numfmt.h"
 #include "unicode/uchar.h"
 #include "unicode/ucurr.h"
+#include "unicode/unum.h"
+#include "unicode/uversion.h"
 
 namespace v8 {
 namespace internal {
@@ -231,6 +233,8 @@ static icu::DecimalFormat* CreateNumberFormat(v8::Handle<v8::String> locale,
 }
 
 // Generates ICU number format pattern from given skeleton.
+// TODO(cira): Remove once ICU includes equivalent method
+// (see http://bugs.icu-project.org/trac/ticket/8610).
 static icu::DecimalFormat* CreateFormatterFromSkeleton(
     const icu::Locale& icu_locale,
     const icu::UnicodeString& skeleton,
@@ -251,6 +255,7 @@ static icu::DecimalFormat* CreateFormatterFromSkeleton(
     // Case of non-consecutive U+00A4 is taken care of in i18n.js.
     int32_t end_index = skeleton.lastIndexOf(currency_symbol, index);
 
+#if (U_ICU_VERSION_MAJOR_NUM == 4) && (U_ICU_VERSION_MINOR_NUM <= 6)
     icu::NumberFormat::EStyles style;
     switch (end_index - index) {
       case 0:
@@ -262,6 +267,19 @@ static icu::DecimalFormat* CreateFormatterFromSkeleton(
       default:
         style = icu::NumberFormat::kPluralCurrencyStyle;
     }
+#else  // ICU version is 4.8 or above (we ignore versions below 4.0).
+    UNumberFormatStyle style;
+    switch (end_index - index) {
+      case 0:
+        style = UNUM_CURRENCY;
+        break;
+      case 1:
+        style = UNUM_CURRENCY_ISO;
+        break;
+      default:
+        style = UNUM_CURRENCY_PLURAL;
+    }
+#endif
 
     base_format = static_cast<icu::DecimalFormat*>(
         icu::NumberFormat::createInstance(icu_locale, style, *status));