new XML modules

lib/pure/xmltreeparser.nim

@@ -0,0 +1,52 @@
+#
+#
+#            Nimrod's Runtime Library
+#        (c) Copyright 2010 Andreas Rumpf
+#
+#    See the file "copying.txt", included in this
+#    distribution, for details about the copyright.
+#
+
+## This module parses an XML document and creates its XML tree representation.
+
+import streams, parsexml, xmltree
+
+
+proc parse*(x: var TXmlParser, father: PXmlNode) =
+  
+
+proc parseXml*(s: PStream, filename: string, 
+               errors: var seq[string]): PXmlNode = 
+  ## parses the XML from stream `s` and returns a ``PXmlNode``. Every
+  ## occured parsing error is added to the `errors` sequence.
+  var x: TXmlParser
+  open(x, s, filename, {reportComments})
+  
+  result = newElement("html")
+  while true:
+    x.next()
+    case x.kind
+    of xmlWhitespace: nil # just skip it
+    of xmlComment: 
+      result.add(newComment(x.text))
+  
+  close(x)
+
+proc parseXml*(s: PStream): PXmlNode = 
+  ## parses the XTML from stream `s` and returns a ``PXmlNode``. All parsing
+  ## errors are ignored.
+  var errors: seq[string] = @[]
+  result = parseXml(s, "unknown_html_doc", errors)
+
+proc loadXml*(path: string, reportErrors = false): PXmlNode = 
+  ## Loads and parses XML from file specified by ``path``, and returns 
+  ## a ``PXmlNode``. If `reportErrors` is true, the parsing errors are
+  ## ``echo``ed.
+  var s = newFileStream(path, fmRead)
+  if s == nil: raise newException(EIO, "Unable to read file: " & path)
+  
+  var errors: seq[string] = @[]
+  result = parseXml(s, path, errors)
+  if reportErrors: 
+    for msg in items(errors): echo(msg)
+