X-Git-Url: https://git.mdrn.pl/redakcja.git/blobdiff_plain/4c48c47d0b84e516114c16ee191359166e93a51c..176630cf8fdfaa410be90cf6299ac1eff3ab0892:/apps/catalogue/xml_tools.py diff --git a/apps/catalogue/xml_tools.py b/apps/catalogue/xml_tools.py old mode 100755 new mode 100644 index 928e57be..242714b6 --- a/apps/catalogue/xml_tools.py +++ b/apps/catalogue/xml_tools.py @@ -1,4 +1,5 @@ -from functools import wraps +# -*- coding: utf-8 -*- +from copy import deepcopy import re from lxml import etree @@ -12,110 +13,6 @@ 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("").is_xml() - True - >>> GradedText("").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 and a master tag. - - >>> GradedText("").is_wl() - True - >>> GradedText("").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("<").is_broken_wl() - True - >>> GradedText("some text").is_broken_wl() - False - """ - if self.is_wl(): - return True - text = self._text.strip() - return text.startswith('') and text.endswith('') - - def master(self): - """ - Gets the master tag. - - >>> GradedText("").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 @@ -139,10 +36,11 @@ def compile_text(parts): 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 + if text: + # 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 @@ -150,26 +48,6 @@ def compile_text(parts): 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(''' - - - -''' % (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) @@ -182,7 +60,7 @@ def add_trim_begin(text): master.insert(0, trim_tag) trim_tag.tail = '\n\n\n' + (master.text or '') master.text = '\n' - return etree.tostring(e, encoding="utf-8") + return unicode(etree.tostring(e, encoding="utf-8"), 'utf-8') def add_trim_end(text): @@ -201,4 +79,63 @@ def add_trim_end(text): prev.tail = (prev.tail or '') + '\n\n\n' else: master.text = (master.text or '') + '\n\n\n' - return etree.tostring(e, encoding="utf-8") + return unicode(etree.tostring(e, encoding="utf-8"), 'utf-8') + + +def split_xml(text): + """Splits text into chapters. + + All this stuff really must go somewhere else. + + """ + src = etree.fromstring(text) + chunks = [] + + splitter = u'naglowek_rozdzial' + parts = src.findall('.//naglowek_rozdzial') + while parts: + # copy the document + copied = deepcopy(src) + + element = parts[-1] + + # find the chapter's title + name_elem = deepcopy(element) + for tag in 'extra', 'motyw', 'pa', 'pe', 'pr', 'pt', 'uwaga': + for a in name_elem.findall('.//' + tag): + a.text='' + del a[:] + name = etree.tostring(name_elem, method='text', encoding='utf-8').strip() + + # in the original, remove everything from the start of the last chapter + parent = element.getparent() + del parent[parent.index(element):] + element, parent = parent, parent.getparent() + while parent is not None: + del parent[parent.index(element) + 1:] + element, parent = parent, parent.getparent() + + # in the copy, remove everything before the last chapter + element = copied.findall('.//naglowek_rozdzial')[-1] + parent = element.getparent() + while parent is not None: + parent.text = None + while parent[0] is not element: + del parent[0] + element, parent = parent, parent.getparent() + chunks[:0] = [[name, + unicode(etree.tostring(copied, encoding='utf-8'), 'utf-8') + ]] + + parts = src.findall('.//naglowek_rozdzial') + + chunks[:0] = [[u'początek', + unicode(etree.tostring(src, encoding='utf-8'), 'utf-8') + ]] + + for ch in chunks[1:]: + ch[1] = add_trim_begin(ch[1]) + for ch in chunks[:-1]: + ch[1] = add_trim_end(ch[1]) + + return chunks