def process(self, text):
""" Simpler version of parse, turns values of text elements into INodes
(intermediary nodes). Results are ITextNodes that may contain more
ITextNodes and ICommandNodes.
:param text: string to parse.
"""
#print('LatexFieldToINode called with "%s"' % text)
self.math_mode = False
self.node = None
if not text:
return ""
text = text.strip()
if not text:
return ""
self.feed = list(text)
self.feed.reverse()
nodes = []
while self.feed:
feed_progress = len(self.feed)
node = self.parse_word()
# ensure that we are not stuck in endless loop
if len(self.feed) < feed_progress:
nodes.append(node)
else:
self.feed.pop()
if len(nodes) == 1:
return nodes[0]
elif nodes:
node = ITextNode(parts=nodes)
return node.tidy()
else:
return ""
def process(self, text):
""" Simpler version of parse, turns values of text elements into INodes
(intermediary nodes). Results are ITextNodes that may contain more
ITextNodes and ICommandNodes.
:param text: string to parse.
"""
#print('LatexFieldToINode called with "%s"' % text)
self.math_mode = False
self.node = None
if not text:
return ""
text = text.strip()
if not text:
return ""
self.feed = list(text)
self.feed.reverse()
nodes = []
while self.feed:
feed_progress = len(self.feed)
node = self.parse_word()
# ensure that we are not stuck in endless loop
if len(self.feed) < feed_progress:
nodes.append(node)
else:
self.feed.pop()
if len(nodes) == 1:
return nodes[0]
elif nodes:
node = ITextNode(parts=nodes)
return node.tidy()
else:
return ""
def parse_word(self, end_on_space=False, return_rows=False):
""" Turn text into ITextNodes. If something special (commands, curlybraces,
brackets is found, deal with them by creating new Nodes of specific types
:param feed: list of chars (strings of length 1)
"""
node = ITextNode()
rows = []
while self.feed:
c = self.feed[-1]
if c == '{':
new_node = self.parse_curlies()
node.append(new_node)
elif c == '}':
break
elif c == '\\':
new_node = self.parse_command()
if return_rows and isinstance(new_node, ICommandNode) and new_node.command == 'br':
# fixme: doesn't handle if some style scope continues across line break
rows.append(node)
node = ITextNode()
else:
node.append(new_node)
elif c == '$':
self.toggle_math_mode()
elif c in one_character_commands:
new_node = self.parse_one_character_command()
node.append(new_node)
elif c.isspace() and end_on_space:
self.feed.pop()
break
#elif c == self.rbracket and not self.math_mode:
# break
#elif c == self.lbracket and not self.math_mode:
# break
#elif c in ['&', '<', '>'] and False:
# self.feed.pop()
# node.append(html.escape(c))
else:
self.feed.pop()
node.append(c)
node = node.tidy(keep_node=False)
if return_rows:
if node:
rows.append(node)
return rows
else:
return node
def parse_word(self, end_on_space=False, return_rows=False):
""" Turn text into ITextNodes. If something special (commands, curlybraces,
brackets is found, deal with them by creating new Nodes of specific types
:param feed: list of chars (strings of length 1)
"""
node = ITextNode()
rows = []
while self.feed:
c = self.feed[-1]
if c == '{':
new_node = self.parse_curlies()
node.append(new_node)
elif c == '}':
break
elif c == '\\':
new_node = self.parse_command()
if return_rows and isinstance(new_node, ICommandNode) and new_node.command == 'br':
# fixme: doesn't handle if some style scope continues across line break
rows.append(node)
node = ITextNode()
else:
node.append(new_node)
elif c == '$':
self.toggle_math_mode()
elif c in one_character_commands:
new_node = self.parse_one_character_command()
node.append(new_node)
elif c.isspace() and end_on_space:
self.feed.pop()
break
#elif c == self.rbracket and not self.math_mode:
# break
#elif c == self.lbracket and not self.math_mode:
# break
#elif c in ['&', '<', '>'] and False:
# self.feed.pop()
# node.append(html.escape(c))
else:
self.feed.pop()
node.append(c)
node = node.tidy(keep_node=False)
if return_rows:
if node:
rows.append(node)
return rows
else:
return node
