/usr/share/octave/packages/io-2.4.5/xmlwrite.m is in octave-io 2.4.5-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 | ## Copyright (C) 2015,2016 Pantxo Diribarne
##
## This program is free software; you can redistribute it and/or modify it
## under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 3 of the License, or
## (at your option) any later version.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this program. If not, see <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @deftypefn {Function File} {} xmlwrite (@var{fname}, @var{dom})
## @deftypefnx {Function File} {@var{str} =} xmlwrite (@var{dom})
##
## Write an xml DOM document to file @var{fname} or to ouput string
## @var{str}.
##
## The @var{dom} argument must be a DOM document object as returned by
## @code{xmlread} function.
##
## Octave does not ship with the necessary Xerces library so you
## should take care of adding the required .jar files to your
## javaclasspath, e.g:
##
## @example
## @code{javaaddpath ("/path/to/xerces-2_11_0/xercesImpl.jar");}
## @code{javaaddpath ("/path/to/xerces-2_11_0/xml-apis.jar");}
## @end example
##
## xmlwrite will check for Java support and proper xerces Java libraries
## in the javaclasspath until the check passes, or if it is called without
## arguments. In the latter case it will also return the found xerces
## javaclasspath entries and xerces version to standard output.
##
## @seealso{xmlread}
## @end deftypefn
function str = xmlwrite (varargin)
persistent java_ok = [];
if (nargin < 1)
## Reset Java support check results
java_ok = [];
endif
## Check Java support and support files
if (isempty (java_ok))
if (! __have_feature__ ("JAVA"))
error ("xmlwrite: Octave was built without Java support, exiting");
elseif (! usejava ("jvm"))
error ("xmlwrite: no Java JRE or JDK detected, exiting");
endif
## Default verbosity level for Java libs check
vrbs = 0;
if (nargin < 1)
vrbs = 3;
endif
## Check if required Java class libs are in the javaclasspath
chk = __XMLrw_chk_sprt__ (javaclasspath ("-all"), vrbs);
if (chk)
java_ok = 1;
## If xmlwrite was called w/o args, return
if (nargin < 1)
str = [];
return
endif
else
java_ok = 0;
error ("xmlwrite: no xercesImpl.jar and/or xml-apis.jar > v2.11.0 in \
javaclasspath");
endif
endif
## Java checks OK; process arguments
if (nargin == 1)
dom = varargin{1};
jos = javaObject ("java.io.StringWriter");
elseif (nargin == 2)
dom = varargin{2};
fname = varargin{1};
if (! ischar (fname))
print_usage ();
endif
jfile = javaObject ("java.io.File", fname);
jos = javaObject ("java.io.FileOutputStream", jfile);
else
print_usage ();
endif
## Check the validity of the DOM document
unwind_protect
doc_classes = {"org.apache.xerces.dom.DeferredDocumentImpl", ...
"org.apache.xerces.dom.DocumentImpl"};
if (! any (strcmp (class (dom), doc_classes)))
error ("xmlwrite: DOM must be a java DOM document object")
endif
try
jfmt = javaObject ("org.apache.xml.serialize.OutputFormat", dom);
jfmt.setIndenting (1);
serializer = javaObject ("org.apache.xml.serialize.XMLSerializer", ...
jos, jfmt);
catch
disp (lasterr ());
error ("xmlwrite: couldn't load Xerces serializer object")
end_try_catch
try
serializer.serialize (dom);
catch
disp (lasterr ());
error ("xmlwrite: couldn't serialize document")
end_try_catch
if (nargout > 0 && strcmp (class (jos), "java.io.StringWriter"))
str = char (jos.toString ());
else
str = 1;
endif
unwind_protect_cleanup
jos.close ();
end_unwind_protect
endfunction
%!demo
%! ## Create a java representation of a DOM document. The document
%! ## object features all the necessary methods to create subelements.
%! doc = javaObject ("org.apache.xerces.dom.DocumentImpl");
%!
%! ## Create a root node and add it to the document
%! root = doc.createElement ("RootNode");
%! root.setAttribute ("created", datestr (date ()));
%! doc.appendChild (root);
%!
%! ## Create a child node, append it text data and add it to the
%! ## root children
%! child = doc.createElement ("TextChild");
%! child.setAttribute ("verbose", "yes");
%! child.setAttribute ("useful", "no");
%! txt = doc.createTextNode ("These are text data");
%! child.appendChild (txt);
%! root.appendChild (child);
%!
%! ## Serialize DOM document to string
%! str = xmlwrite (doc)
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