[zmat] fix base64encode trailing newline, disable jvm warning

Author: fangq

base64encode.m

@@ -33,7 +33,7 @@
 end
 
 if (exist('zmat', 'file') == 2 || exist('zmat', 'file') == 3)
-    [varargout{1:nargout}] = zmat(varargin{1}, 1, 'base64', varargin{2:end});
+    [varargout{1:nargout}] = zmat(varargin{1}, 2, 'base64', varargin{2:end});
     return
 end
 
@@ -45,7 +45,6 @@
 
 if (isoctavemesh)
     varargout{1} = base64_encode(uint8(input));
-    varargout{1}  = regexprep(varargout{1}, '[\r\n]', '');
     return
 end
 

savebj.m

@@ -195,18 +195,6 @@
     if (~ismember(dozip, {'zlib', 'gzip', 'lzma', 'lzip', 'lz4', 'lz4hc'}) && isempty(regexp(dozip, '^blosc2', 'once')))
         error('compression method "%s" is not supported', dozip);
     end
-    if (exist('zmat', 'file') ~= 2 && exist('zmat', 'file') ~= 3)
-        try
-            error(javachk('jvm'));
-            try
-                base64decode('test');
-            catch
-                matlab.net.base64decode('test');
-            end
-        catch
-            error('java-based compression is not supported');
-        end
-    end
 end
 
 if (~opt.messagepack)

savejson.m

@@ -204,19 +204,6 @@
     if (~ismember(dozip, {'zlib', 'gzip', 'lzma', 'lzip', 'lz4', 'lz4hc'}) && isempty(regexp(dozip, '^blosc2', 'once')))
         error('compression method "%s" is not supported', dozip);
     end
-    if (exist('zmat', 'file') ~= 2 && exist('zmat', 'file') ~= 3)
-        try
-            error(javachk('jvm'));
-            try
-                base64decode('test');
-            catch
-                matlab.net.base64decode('test');
-            end
-        catch
-            warning('java-based compression is not supported');
-        end
-    end
-    opt.Compression = dozip;
 end
 
 rootisarray = 0;