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-rw-r--r--util/xml.lua57
1 files changed, 57 insertions, 0 deletions
diff --git a/util/xml.lua b/util/xml.lua
new file mode 100644
index 00000000..6dbed65d
--- /dev/null
+++ b/util/xml.lua
@@ -0,0 +1,57 @@
+
+local st = require "util.stanza";
+local lxp = require "lxp";
+
+module("xml")
+
+local parse_xml = (function()
+ local ns_prefixes = {
+ ["http://www.w3.org/XML/1998/namespace"] = "xml";
+ };
+ local ns_separator = "\1";
+ local ns_pattern = "^([^"..ns_separator.."]*)"..ns_separator.."?(.*)$";
+ return function(xml)
+ local handler = {};
+ local stanza = st.stanza("root");
+ function handler:StartElement(tagname, attr)
+ local curr_ns,name = tagname:match(ns_pattern);
+ if name == "" then
+ curr_ns, name = "", curr_ns;
+ end
+ if curr_ns ~= "" then
+ attr.xmlns = curr_ns;
+ end
+ for i=1,#attr do
+ local k = attr[i];
+ attr[i] = nil;
+ local ns, nm = k:match(ns_pattern);
+ if nm ~= "" then
+ ns = ns_prefixes[ns];
+ if ns then
+ attr[ns..":"..nm] = attr[k];
+ attr[k] = nil;
+ end
+ end
+ end
+ stanza:tag(name, attr);
+ end
+ function handler:CharacterData(data)
+ stanza:text(data);
+ end
+ function handler:EndElement(tagname)
+ stanza:up();
+ end
+ local parser = lxp.new(handler, "\1");
+ local ok, err, line, col = parser:parse(xml);
+ if ok then ok, err, line, col = parser:parse(); end
+ --parser:close();
+ if ok then
+ return stanza.tags[1];
+ else
+ return ok, err.." (line "..line..", col "..col..")";
+ end
+ end;
+end)();
+
+parse = parse_xml;
+return _M;