httpie-cli/httpie/output/formatters/xml.py
Jakub Roztocil e4c68063b9 Converted built-in formatters to formatter plugins.
Still work in progress and the API should be considered private for now.
2014-05-12 19:12:39 +02:00

62 lines
1.9 KiB
Python

from __future__ import absolute_import
import re
from xml.etree import ElementTree
from httpie.plugins import FormatterPlugin
DECLARATION_RE = re.compile('<\?xml[^\n]+?\?>', flags=re.I)
DOCTYPE_RE = re.compile('<!DOCTYPE[^\n]+?>', flags=re.I)
DEFAULT_INDENT = 4
def indent(elem, indent_text=' ' * DEFAULT_INDENT):
"""
In-place prettyprint formatter
C.f. http://effbot.org/zone/element-lib.htm#prettyprint
"""
def _indent(elem, level=0):
i = "\n" + level * indent_text
if len(elem):
if not elem.text or not elem.text.strip():
elem.text = i + indent_text
if not elem.tail or not elem.tail.strip():
elem.tail = i
for elem in elem:
_indent(elem, level + 1)
if not elem.tail or not elem.tail.strip():
elem.tail = i
else:
if level and (not elem.tail or not elem.tail.strip()):
elem.tail = i
return _indent(elem)
class XMLFormatter(FormatterPlugin):
# TODO: tests
def format_body(self, body, mime):
if 'xml' in mime:
# FIXME: orig NS names get forgotten during the conversion, etc.
try:
root = ElementTree.fromstring(body.encode('utf8'))
except ElementTree.ParseError:
# Ignore invalid XML errors (skips attempting to pretty print)
pass
else:
indent(root)
# Use the original declaration
declaration = DECLARATION_RE.match(body)
doctype = DOCTYPE_RE.match(body)
body = ElementTree.tostring(root, encoding='utf-8')\
.decode('utf8')
if doctype:
body = '%s\n%s' % (doctype.group(0), body)
if declaration:
body = '%s\n%s' % (declaration.group(0), body)
return body