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#
# XML.py - DITrack XML output support
#
# Copyright (c) 2007 The DITrack Project, www.ditrack.org.
#
# $Id: list.py 2182 2007-10-09 21:23:50Z vss $
# $HeadURL: https://127.0.0.1/ditrack/src/trunk/DITrack/Command/list.py $
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# XXX: this module is dt-specific, so it should be moved to an appropriate
# place.
import sys
from xml.sax.saxutils import XMLGenerator
from xml.sax.xmlreader import AttributesImpl
import DITrack.dt.globals
# XML format version
XML_FORMAT = "1"
class Writer:
"""
Low level XML output primitives.
"""
def __init__(self, out=sys.stdout):
self._xml = XMLGenerator(out, "utf-8")
self._xml.startDocument()
def closetag(self, tag, nl=False, indent=0):
assert indent >= 0
self.text(" " * indent)
self._xml.endElement(tag)
if nl:
self.text("\n")
def finish(self):
self._xml.endDocument()
def opentag(self, tag, attrs={}, nl=False, indent=0):
assert indent >= 0
self.text(" " * indent)
self._xml.startElement(tag, AttributesImpl(attrs))
if nl:
self.text("\n")
def tag_enclose(self, tag, attrs, text, nl=False, indent=0):
assert indent >= 0
self.text(" " * indent)
self._xml.startElement(tag, attrs)
self._xml.characters(text)
self._xml.endElement(tag)
if nl:
self.text("\n")
def text(self, s):
self._xml.characters(s)
class Output:
"""
DITrack-specific XML output producer.
"""
def __init__(self, command, input):
"""
Writes the dt XML output header to stdout. COMMAND is a command name
and INPUT is a list of tuples (TAG, VALUE) to be output as input
parameters to the command (e.g. enclosed in an '<input>' block).
"""
self.writer = Writer()
self.writer.opentag("dt",
{
"format": XML_FORMAT,
"dt-version": DITrack.dt.globals.VERSION,
}
)
self.writer.text("\n\n")
self.writer.opentag("input", { "command": command })
for k, v in input:
self.writer.text("\n ")
self.writer.tag_enclose(k, {}, v)
self.writer.text("\n")
self.writer.closetag("input")
self.writer.text("\n\n")
self.writer.opentag("output")
self.writer.text("\n\n")
def finish(self):
self.writer.closetag("output")
self.writer.text("\n")
self.writer.closetag("dt")
self.writer.text("\n")
self.writer.finish()
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