class Html2Latex(object):
"""
Class which based on given element (html/string) can produce latex format
"""
list_types = {
'ul': 'itemize',
'ol': 'enumerate'
}
def __init__(self, element):
if type(element) in (str, unicode):
tree = ET.fromstring('<html_example>' + element + "</html_example>")
self.el = tree
else:
self.el = element
from ist.utils.texlist2 import TexList
self.tex = TexList()
def extend_children(self):
"""
Recursive children call
"""
for child in self.el:
self.tex.extend(Html2Latex(child).to_latex())
def tag_is(self, *tags):
"""
whether current tag is in given tags
"""
return self.el.tag in tags
def text(self):
""" return current text """
return self.el.text if self.el.text else ''
def tail(self):
""" return current tail """
return self.el.tail if self.el.tail else ''
def add_text(self):
if str(self.text).strip():
with self.tex:
self.tex.append(self.text())
def add_tail(self):
"""
Adds current tail if exists
"""
if self.tail():
if self.tail() == '\n':
self.tex.append(self.tail())
else:
with self.tex:
self.tex.append(self.tail())
def get_list_type(self):
""" helper method for getting list type"""
return self.list_types.get(self.el.tag, 'itemize')
#
# def tag (self):
# return self.el.tag
def to_latex(self):
"""
Method converts this object to latex with recursive calls
"""
if self.tag_is('p'):
with self.tex:
with self.tex:
self.tex.append(self.text())
self.extend_children()
self.add_tail()
# self.tex.newline ()
elif self.tag_is('br'):
self.tex.append(self.text())
self.tex.append(r'\\')
self.extend_children()
self.add_tail()
elif self.tag_is('h1'):
self.tex.append('\\section')
with self.tex:
self.tex.append(self.text())
self.extend_children()
self.add_tail()
elif self.tag_is('a'):
self.tex.extend(LatexHref(self.el).to_latex())
elif self.tag_is('em'):
self.tex.append('\\textit')
with self.tex:
self.tex.append(self.text())
self.extend_children()
self.add_tail()
elif self.tag_is('strong'):
self.tex.append('\\textbf')
with self.tex:
self.tex.append(self.text())
self.extend_children()
self.add_tail()
elif self.tag_is('ul', 'ol'):
self.tex.begin(self.get_list_type())
self.tex.append(self.text())
self.extend_children()
self.tex.end(self.get_list_type())
self.add_tail()
elif self.tag_is('li'):
# with self.tex:
self.tex.append('\\item ')
self.add_text()
self.extend_children()
self.add_tail()
# so far, code tag will be monospaced only
elif self.tag_is('code'):
# self.tex.open_element ('lstlisting')
# self.tex.newline ()
self.tex.slash('ttfamily ')
self.tex.append(self.text().replace('\$', '\$'))
# self.extend_children ()
# self.tex.newline ()
# self.tex.close_element ('lstlisting')
# self.add_tail ()
elif self.tag_is('span'):
self.tex.append(self.text())
self.extend_children()
self.add_tail()
else:
with self.tex:
self.tex.append(self.text())
self.extend_children()
self.add_tail()
return self.tex
class Html2Latex(object):
"""
Class Html2Latex which based on given element (html/string) can produce latex format
"""
list_types = {
'ul': 'itemize',
'ol': 'enumerate'
}
def __init__(self, element):
if type(element) in (str, unicode):
tree = ET.fromstring('<html_example>' + element + "</html_example>")
self.el = tree
else:
self.el = element
from ist.utils.texlist2 import TexList
self.tex = TexList()
def extend_children(self):
"""
Recursive children call
"""
for child in self.el:
self.tex.extend(Html2Latex(child).to_latex())
def tag_is(self, *tags):
"""
whether current tag is in given tags
"""
return self.el.tag in tags
def text(self):
""" return current text """
return self.el.text if self.el.text else ''
def tail(self):
""" return current tail """
return self.el.tail if self.el.tail else ''
def add_text(self):
if str(self.text).strip():
with self.tex:
self.tex.append(self.text())
def add_tail(self):
"""
Adds current tail if exists
"""
if self.tail():
if self.tail() == '\n':
self.tex.append(self.tail())
else:
with self.tex:
self.tex.append(self.tail())
def get_list_type(self):
""" helper method for getting list type"""
return self.list_types.get(self.el.tag, 'itemize')
#
# def tag (self):
# return self.el.tag
def to_latex(self):
"""
Method converts this object to latex with recursive calls
"""
if self.tag_is('p'):
with self.tex:
with self.tex:
self.tex.append(self.text())
self.extend_children()
self.add_tail()
# self.tex.newline ()
elif self.tag_is('br'):
self.tex.append(self.text())
self.tex.append(r'\\')
self.extend_children()
self.add_tail()
elif self.tag_is('h1'):
self.tex.append('\\section')
with self.tex:
self.tex.append(self.text())
self.extend_children()
self.add_tail()
elif self.tag_is('a'):
self.tex.extend(LatexHref(self.el).to_latex())
elif self.tag_is('em'):
self.tex.append('\\textit')
with self.tex:
self.tex.append(self.text())
self.extend_children()
self.add_tail()
elif self.tag_is('strong'):
self.tex.append('\\textbf')
with self.tex:
self.tex.append(self.text())
self.extend_children()
self.add_tail()
elif self.tag_is('ul', 'ol'):
self.tex.begin(self.get_list_type())
self.tex.append(self.text().strip())
self.extend_children()
self.tex.end(self.get_list_type())
self.add_tail()
elif self.tag_is('li'):
# with self.tex:
self.tex.append('\\item ')
self.add_text()
self.extend_children()
self.add_tail()
# so far, code tag will be monospaced only
elif self.tag_is('code'):
# self.tex.open_element ('lstlisting')
# self.tex.newline ()
self.tex.slash('ttfamily ')
self.tex.append(self.text().replace('\$', '\$'))
# self.extend_children ()
# self.tex.newline ()
# self.tex.close_element ('lstlisting')
# self.add_tail ()
elif self.tag_is('span'):
self.tex.append(self.text())
self.extend_children()
self.add_tail()
else:
with self.tex:
self.tex.append(self.text())
self.extend_children()
self.add_tail()
return self.tex
