Implemented [NSTimeZone-localizedName:locale:].

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@32025 72102866-910b-0410-8b05-ffd578937521

ChangeLog

@@ -1,3 +1,7 @@
+2011-02-09  Stefan Bidigaray <stefanbidi@gmail.com>
+
+	* Source/NSTimeZone.m: ([-localizedName:locale:]) Implemented method.
+
 2011-02-09  Stefan Bidigaray <stefanbidi@gmail.com>
 
 	* configure:

Source/NSTimeZone.m

@@ -99,6 +99,7 @@
 #import "Foundation/NSPortCoder.h"
 #import "Foundation/NSTimeZone.h"
 #import "Foundation/NSByteOrder.h"
+#import "Foundation/NSLocale.h"
 #import "GNUstepBase/GSConfig.h"
 #import "GNUstepBase/NSObject+GNUstepBase.h"
 #import "GNUstepBase/NSString+GNUstepBase.h"
@@ -111,6 +112,10 @@
 #include "nstzfile.h"
 #endif
 
+#if defined(HAVE_UNICODE_UCAL_H)
+#include <unicode/ucal.h>
+#endif
+
 NSString * const NSSystemTimeZoneDidChangeNotification
   = @"NSSystemTimeZoneDidChangeNotification";
 
@@ -152,6 +157,28 @@ NSString * const NSSystemTimeZoneDidChangeNotification
 #define POSIX_TZONES     @"posix/"
 #endif
 
+static inline int
+_NSToICUTZDisplayStyle(NSTimeZoneNameStyle style)
+{
+#if GS_USE_ICU == 1
+  switch (style)
+    {
+      case NSTimeZoneNameStyleStandard:
+        return UCAL_STANDARD;
+      case NSTimeZoneNameStyleShortStandard:
+        return UCAL_SHORT_STANDARD;
+      case NSTimeZoneNameStyleDaylightSaving:
+        return UCAL_DST;
+      case NSTimeZoneNameStyleShortDaylightSaving:
+        return UCAL_SHORT_DST;
+      default:
+        return -1;
+    }
+#else
+  return -1;
+#endif
+}
+
 /* Possible location of system time zone files */
 static NSString *tzdir = nil;
 
@@ -2092,7 +2119,42 @@ localZoneString, [zone name], sign, s/3600, (s/60)%60);
 - (NSString *)localizedName: (NSTimeZoneNameStyle)style
                      locale: (NSLocale *)locale
 {
+#if GS_USE_ICU == 1
+#define BUFFER_SIZE 512
+  NSString *tzStr;
+  int32_t tzLen;
+  int32_t len;
+  const char *cLocale;
+  UChar *result;
+  UChar tzName[BUFFER_SIZE];
+  UCalendar *cal;
+  UErrorCode err = U_ZERO_ERROR;
+  
+  tzStr = [self name];
+  if ((tzLen = [tzStr length]) > BUFFER_SIZE)
+    tzLen = BUFFER_SIZE;
+  [tzStr getCharacters: tzName range: NSMakeRange(0, tzLen)];
+  cLocale = [[locale localeIdentifier] UTF8String];
+  
+  cal = ucal_open(tzName, tzLen, cLocale, UCAL_TRADITIONAL, &err);
+  if (U_FAILURE(err))
+    return nil;
+  
+  result = NSZoneMalloc ([self zone], BUFFER_SIZE * sizeof(UChar));
+  len = ucal_getTimeZoneDisplayName (cal, _NSToICUTZDisplayStyle(style),
+    cLocale, result, BUFFER_SIZE, &err);
+  if (len > BUFFER_SIZE)
+    {
+      result = NSZoneRealloc ([self zone], result, len * sizeof(UChar));
+      ucal_getTimeZoneDisplayName (cal, _NSToICUTZDisplayStyle(style),
+        cLocale, result, len, &err);
+    }
+  
+  return AUTORELEASE([[NSString alloc] initWithCharactersNoCopy: result
+    length: len freeWhenDone: YES]);
+#else
   return nil;   // FIXME;
+#endif
 }
                     
 @end