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from reconfigure.nodes import *
from reconfigure.parsers import BaseParser
from iniparse import INIConfig
from StringIO import StringIO
class IniFileParser (BaseParser):
"""
A parser for standard ``.ini`` config files.
:param sectionless: if ``True``, allows a section-less attributes appear in the beginning of file
"""
def __init__(self, sectionless=False, nullsection='__default__'):
self.sectionless = sectionless
self.nullsection = nullsection
def _get_comment(self, container):
c = container.contents[0].comment
return c.strip() if c else None
def _set_comment(self, container, comment):
if comment:
container.contents[0].comment = comment
container.contents[0].comment_separator = ';'
def parse(self, content):
content = '\n'.join(filter(None, [x.strip() for x in content.splitlines()]))
if self.sectionless:
content = '[' + self.nullsection + ']\n' + content
data = StringIO(content)
cp = INIConfig(data, optionxformvalue=lambda x: x)
root = RootNode()
for section in cp:
name = section
if self.sectionless and section == self.nullsection:
name = None
section_node = Node(name)
section_node.comment = self._get_comment(cp[section]._lines[0])
for option in cp[section]:
if option in cp[section]._options:
node = PropertyNode(option, cp[section][option])
node.comment = self._get_comment(cp[section]._options[option])
section_node.children.append(node)
root.children.append(section_node)
return root
def stringify(self, tree):
cp = INIConfig()
for section in tree.children:
if self.sectionless and section.name is None:
sectionname = self.nullsection
else:
sectionname = section.name
cp._new_namespace(sectionname)
for option in section.children:
if not isinstance(option, PropertyNode):
raise TypeError('Third level nodes should be PropertyNodes')
cp[sectionname][option.name] = option.value
if option.comment:
self._set_comment(cp[sectionname]._options[option.name], option.comment)
if hasattr(cp[sectionname], '_lines'):
self._set_comment(cp[sectionname]._lines[0], section.comment)
data = str(cp) + '\n'
if self.sectionless:
data = data.replace('[' + self.nullsection + ']\n', '')
return data
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