+++ /dev/null
-from functools import wraps
-import re
-
-from lxml import etree
-from catalogue.constants import TRIM_BEGIN, TRIM_END, MASTERS
-
-RE_TRIM_BEGIN = re.compile("^<!--%s-->$" % TRIM_BEGIN, re.M)
-RE_TRIM_END = re.compile("^<!--%s-->$" % TRIM_END, re.M)
-
-
-class ParseError(BaseException):
- pass
-
-
-def obj_memoized(f):
- """
- A decorator that caches return value of object methods.
- The cache is kept with the object, in a _obj_memoized property.
- """
- @wraps(f)
- def wrapper(self, *args, **kwargs):
- if not hasattr(self, '_obj_memoized'):
- self._obj_memoized = {}
- key = (f.__name__,) + args + tuple(sorted(kwargs.iteritems()))
- try:
- return self._obj_memoized[key]
- except TypeError:
- return f(self, *args, **kwargs)
- except KeyError:
- self._obj_memoized[key] = f(self, *args, **kwargs)
- return self._obj_memoized[key]
- return wrapper
-
-
-class GradedText(object):
- _edoc = None
-
- ROOT = 'utwor'
- RDF = '{http://www.w3.org/1999/02/22-rdf-syntax-ns#}RDF'
-
- def __init__(self, text):
- self._text = text
-
- @obj_memoized
- def is_xml(self):
- """
- Determines if it's a well-formed XML.
-
- >>> GradedText("<a/>").is_xml()
- True
- >>> GradedText("<a>").is_xml()
- False
- """
- try:
- self._edoc = etree.fromstring(self._text)
- except etree.XMLSyntaxError:
- return False
- return True
-
- @obj_memoized
- def is_wl(self):
- """
- Determines if it's an XML with a <utwor> and a master tag.
-
- >>> GradedText("<utwor><powiesc></powiesc></utwor>").is_wl()
- True
- >>> GradedText("<a></a>").is_wl()
- False
- """
- if self.is_xml():
- e = self._edoc
- # FIXME: there could be comments
- ret = e.tag == self.ROOT and (
- len(e) == 1 and e[0].tag in MASTERS or
- len(e) == 2 and e[0].tag == self.RDF
- and e[1].tag in MASTERS)
- if ret:
- self._master = e[-1].tag
- del self._edoc
- return ret
- else:
- return False
-
- @obj_memoized
- def is_broken_wl(self):
- """
- Determines if it at least looks like broken WL file
- and not just some untagged text.
-
- >>> GradedText("<utwor><</utwor>").is_broken_wl()
- True
- >>> GradedText("some text").is_broken_wl()
- False
- """
- if self.is_wl():
- return True
- text = self._text.strip()
- return text.startswith('<utwor>') and text.endswith('</utwor>')
-
- def master(self):
- """
- Gets the master tag.
-
- >>> GradedText("<utwor><powiesc></powiesc></utwor>").master()
- 'powiesc'
- """
- assert self.is_wl()
- return self._master
-
- @obj_memoized
- def has_trim_begin(self):
- return RE_TRIM_BEGIN.search(self._text)
-
- @obj_memoized
- def has_trim_end(self):
- return RE_TRIM_END.search(self._text)
-
-
-def _trim(text, trim_begin=True, trim_end=True):
- """
- Cut off everything before RE_TRIM_BEGIN and after RE_TRIM_END, so
- that eg. one big XML file can be compiled from many small XML files.
- """
- if trim_begin:
- text = RE_TRIM_BEGIN.split(text, maxsplit=1)[-1]
- if trim_end:
- text = RE_TRIM_END.split(text, maxsplit=1)[0]
- return text
-
-
-def compile_text(parts):
- """
- Compiles full text from an iterable of parts,
- trimming where applicable.
- """
- texts = []
- trim_begin = False
- text = ''
- for next_text in parts:
- if not next_text:
- continue
- # trim the end, because there's more non-empty text
- # don't trim beginning, if `text' is the first non-empty part
- texts.append(_trim(text, trim_begin=trim_begin))
- trim_begin = True
- text = next_text
- # don't trim the end, because there's no more text coming after `text'
- # only trim beginning if it's not still the first non-empty
- texts.append(_trim(text, trim_begin=trim_begin, trim_end=False))
- return "".join(texts)
-
-
-def change_master(text, master):
- """
- Changes the master tag in a WL document.
- """
- e = etree.fromstring(text)
- e[-1].tag = master
- return etree.tostring(e, encoding="utf-8")
-
-
-def basic_structure(text, master):
- e = etree.fromstring('''<utwor>
-<master>
-<!--%s--><!--%s-->
-</master>
-</utwor>''' % (TRIM_BEGIN, TRIM_END))
- e[0].tag = master
- e[0][0].tail = "\n"*3 + text + "\n"*3
- return etree.tostring(e, encoding="utf-8")
-
-
-def add_trim_begin(text):
- trim_tag = etree.Comment(TRIM_BEGIN)
- e = etree.fromstring(text)
- for master in e[::-1]:
- if master.tag in MASTERS:
- break
- if master.tag not in MASTERS:
- raise ParseError('No master tag found!')
-
- master.insert(0, trim_tag)
- trim_tag.tail = '\n\n\n' + (master.text or '')
- master.text = '\n'
- return etree.tostring(e, encoding="utf-8")
-
-
-def add_trim_end(text):
- trim_tag = etree.Comment(TRIM_END)
- e = etree.fromstring(text)
- for master in e[::-1]:
- if master.tag in MASTERS:
- break
- if master.tag not in MASTERS:
- raise ParseError('No master tag found!')
-
- master.append(trim_tag)
- trim_tag.tail = '\n'
- prev = trim_tag.getprevious()
- if prev is not None:
- prev.tail = (prev.tail or '') + '\n\n\n'
- else:
- master.text = (master.text or '') + '\n\n\n'
- return etree.tostring(e, encoding="utf-8")
fnp / redakcja.git / blobdiff