[HARMONY-6616] [classlib][nio_char] Incompatible charsets of Charset.availableCharsets() between RI6 and Harmony6

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 5.0M14
• Fix Version/s: 5.0M16
• Component/s: Classlib
• Patch Info: Patch Available
• Assignee: Unassigned
• Reporter: deven you
• Created: 11/Aug/10 06:25
• Updated: 09/Oct/10 01:50
• Resolved: 19/Sep/10 09:05

Description

I have run a test to print all available charsets returned by Charset.availableCharsets() both on RI6 and Harmony6, and find RI and harmony return different names for some charsets, below is the summary:
RI6 names Harmony6 names
IBM00858 cp858
IBM850 cp850
IBM857 cp857
IBM860 cp860
IBM861 cp861
IBM862 cp862
IBM863 cp863
IBM864 cp864
IBM865 cp865
IBM866 cp866
IBM868 cp868
IBM869 cp869
x-IBM737 x-ibm-737_P100-1997
x-IBM856 cp856
x-IBM875 x-ibm-875_P100-1995
x-IBM922 cp922
x-IBM1006 x-ibm-1006_P100-1995
x-IBM1025 x-ibm-1025_P100-1995
x-IBM1112 x-ibm-1112_P100-1995
x-IBM1122 x-ibm-1122_P100-1999
x-IBM1123 x-ibm-1123_P100-1995
x-IBM1124 x-ibm-1124_P100-1996
x-IBM1097 x-ibm-1097_P100-1995
x-IBM1098 x-ibm-1098_P100-1995
x-MacCyrillic x-mac-cyrillic
x-MacGreek x-mac-greek
x-MacTurkish x-mac-turkish

Java spec for Charset.availableCharsets() says: Constructs a sorted map from canonical charset names to charset objects. So the difference is due to RI and Harmony6 use different charset names as the canonical names.

For example the pair of IBM00858 and cp858 belongs to the same charset, RI uses IBM00858 as the canonical name but Harmony uses cp858, thus they return different charset names for the availableCharsets(). Above charsets are provided by harmony built-in charsets. I suppose RI's behavior should be the right one which implies RI uses the correct canonical charset names so I have changed this built-in charsets to comply with RI.