mirror of https://github.com/python/cpython.git
720 lines
24 KiB
Python
Executable File
720 lines
24 KiB
Python
Executable File
#! /usr/bin/env python
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"""Promote the IDs from <label/> elements to the enclosing section / chapter /
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whatever, then remove the <label/> elements. This allows *ML style internal
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linking rather than the bogus LaTeX model.
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Note that <label/>s in <title> elements are promoted two steps, since the
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<title> elements are artificially created from the section parameter, and the
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label really refers to the sectioning construct.
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"""
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__version__ = '$Revision$'
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import errno
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import esistools
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import re
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import string
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import sys
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import xml.dom.core
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import xml.dom.esis_builder
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class ConversionError(Exception):
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pass
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DEBUG_PARA_FIXER = 0
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# Workaround to deal with invalid documents (multiple root elements). This
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# does not indicate a bug in the DOM implementation.
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#
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def get_documentElement(self):
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docelem = None
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for n in self._node.children:
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if n.type == xml.dom.core.ELEMENT:
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docelem = xml.dom.core.Element(n, self, self)
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return docelem
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xml.dom.core.Document.get_documentElement = get_documentElement
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# Replace get_childNodes for the Document class; without this, children
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# accessed from the Document object via .childNodes (no matter how many
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# levels of access are used) will be given an ownerDocument of None.
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#
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def get_childNodes(self):
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return xml.dom.core.NodeList(self._node.children, self, self)
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xml.dom.core.Document.get_childNodes = get_childNodes
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def get_first_element(doc, gi):
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for n in doc.childNodes:
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if n.nodeType == xml.dom.core.ELEMENT and n.tagName == gi:
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return n
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def extract_first_element(doc, gi):
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node = get_first_element(doc, gi)
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if node is not None:
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doc.removeChild(node)
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return node
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def simplify(doc):
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# Try to rationalize the document a bit, since these things are simply
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# not valid SGML/XML documents as they stand, and need a little work.
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documentclass = "document"
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inputs = []
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node = extract_first_element(doc, "documentclass")
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if node is not None:
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documentclass = node.getAttribute("classname")
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node = extract_first_element(doc, "title")
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if node is not None:
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inputs.append(node)
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# update the name of the root element
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node = get_first_element(doc, "document")
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if node is not None:
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node._node.name = documentclass
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while 1:
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node = extract_first_element(doc, "input")
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if node is None:
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break
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inputs.append(node)
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if inputs:
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docelem = doc.documentElement
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inputs.reverse()
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for node in inputs:
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text = doc.createTextNode("\n")
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docelem.insertBefore(text, docelem.firstChild)
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docelem.insertBefore(node, text)
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docelem.insertBefore(doc.createTextNode("\n"), docelem.firstChild)
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while doc.firstChild.nodeType == xml.dom.core.TEXT:
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doc.removeChild(doc.firstChild)
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def cleanup_root_text(doc):
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discards = []
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skip = 0
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for n in doc.childNodes:
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prevskip = skip
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skip = 0
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if n.nodeType == xml.dom.core.TEXT and not prevskip:
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discards.append(n)
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elif n.nodeType == xml.dom.core.ELEMENT and n.tagName == "COMMENT":
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skip = 1
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for node in discards:
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doc.removeChild(node)
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def rewrite_desc_entries(doc, argname_gi):
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argnodes = doc.getElementsByTagName(argname_gi)
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for node in argnodes:
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parent = node.parentNode
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nodes = []
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for n in parent.childNodes:
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if n.nodeType != xml.dom.core.ELEMENT or n.tagName != argname_gi:
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nodes.append(n)
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desc = doc.createElement("description")
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for n in nodes:
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parent.removeChild(n)
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desc.appendChild(n)
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if node.childNodes:
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# keep the <args>...</args>, newline & indent
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parent.insertBefore(doc.createText("\n "), node)
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else:
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# no arguments, remove the <args/> node
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parent.removeChild(node)
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parent.appendChild(doc.createText("\n "))
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parent.appendChild(desc)
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parent.appendChild(doc.createText("\n"))
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def handle_args(doc):
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rewrite_desc_entries(doc, "args")
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rewrite_desc_entries(doc, "constructor-args")
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def handle_appendix(doc):
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# must be called after simplfy() if document is multi-rooted to begin with
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docelem = doc.documentElement
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toplevel = docelem.tagName == "manual" and "chapter" or "section"
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appendices = 0
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nodes = []
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for node in docelem.childNodes:
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if appendices:
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nodes.append(node)
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elif node.nodeType == xml.dom.core.ELEMENT:
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appnodes = node.getElementsByTagName("appendix")
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if appnodes:
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appendices = 1
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parent = appnodes[0].parentNode
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parent.removeChild(appnodes[0])
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parent.normalize()
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if nodes:
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map(docelem.removeChild, nodes)
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docelem.appendChild(doc.createTextNode("\n\n\n"))
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back = doc.createElement("back-matter")
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docelem.appendChild(back)
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back.appendChild(doc.createTextNode("\n"))
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while nodes and nodes[0].nodeType == xml.dom.core.TEXT \
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and not string.strip(nodes[0].data):
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del nodes[0]
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map(back.appendChild, nodes)
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docelem.appendChild(doc.createTextNode("\n"))
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def handle_labels(doc):
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for node in doc.childNodes:
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if node.nodeType == xml.dom.core.ELEMENT:
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labels = node.getElementsByTagName("label")
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for label in labels:
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id = label.getAttribute("id")
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if not id:
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continue
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parent = label.parentNode
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if parent.tagName == "title":
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parent.parentNode.setAttribute("id", id)
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else:
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parent.setAttribute("id", id)
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# now, remove <label id="..."/> from parent:
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parent.removeChild(label)
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def fixup_trailing_whitespace(doc, wsmap):
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queue = [doc]
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while queue:
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node = queue[0]
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del queue[0]
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if node.nodeType == xml.dom.core.ELEMENT \
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and wsmap.has_key(node.tagName):
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ws = wsmap[node.tagName]
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children = node.childNodes
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children.reverse()
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if children[0].nodeType == xml.dom.core.TEXT:
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data = string.rstrip(children[0].data) + ws
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children[0].data = data
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children.reverse()
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# hack to get the title in place:
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if node.tagName == "title" \
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and node.parentNode.firstChild.nodeType == xml.dom.core.ELEMENT:
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node.parentNode.insertBefore(doc.createText("\n "),
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node.parentNode.firstChild)
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for child in node.childNodes:
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if child.nodeType == xml.dom.core.ELEMENT:
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queue.append(child)
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def normalize(doc):
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for node in doc.childNodes:
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if node.nodeType == xml.dom.core.ELEMENT:
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node.normalize()
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def cleanup_trailing_parens(doc, element_names):
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d = {}
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for gi in element_names:
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d[gi] = gi
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rewrite_element = d.has_key
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queue = []
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for node in doc.childNodes:
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if node.nodeType == xml.dom.core.ELEMENT:
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queue.append(node)
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while queue:
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node = queue[0]
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del queue[0]
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if rewrite_element(node.tagName):
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children = node.childNodes
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if len(children) == 1 \
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and children[0].nodeType == xml.dom.core.TEXT:
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data = children[0].data
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if data[-2:] == "()":
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children[0].data = data[:-2]
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else:
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for child in node.childNodes:
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if child.nodeType == xml.dom.core.ELEMENT:
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queue.append(child)
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def contents_match(left, right):
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left_children = left.childNodes
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right_children = right.childNodes
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if len(left_children) != len(right_children):
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return 0
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for l, r in map(None, left_children, right_children):
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nodeType = l.nodeType
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if nodeType != r.nodeType:
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return 0
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if nodeType == xml.dom.core.ELEMENT:
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if l.tagName != r.tagName:
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return 0
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# should check attributes, but that's not a problem here
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if not contents_match(l, r):
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return 0
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elif nodeType == xml.dom.core.TEXT:
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if l.data != r.data:
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return 0
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else:
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# not quite right, but good enough
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return 0
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return 1
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def create_module_info(doc, section):
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# Heavy.
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node = extract_first_element(section, "modulesynopsis")
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if node is None:
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return
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node._node.name = "synopsis"
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lastchild = node.childNodes[-1]
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if lastchild.nodeType == xml.dom.core.TEXT \
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and lastchild.data[-1:] == ".":
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lastchild.data = lastchild.data[:-1]
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modauthor = extract_first_element(section, "moduleauthor")
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if modauthor:
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modauthor._node.name = "author"
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modauthor.appendChild(doc.createTextNode(
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modauthor.getAttribute("name")))
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modauthor.removeAttribute("name")
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if section.tagName == "section":
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modinfo_pos = 2
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modinfo = doc.createElement("moduleinfo")
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moddecl = extract_first_element(section, "declaremodule")
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name = None
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if moddecl:
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modinfo.appendChild(doc.createTextNode("\n "))
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name = moddecl.attributes["name"].value
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namenode = doc.createElement("name")
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namenode.appendChild(doc.createTextNode(name))
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modinfo.appendChild(namenode)
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type = moddecl.attributes.get("type")
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if type:
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type = type.value
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modinfo.appendChild(doc.createTextNode("\n "))
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typenode = doc.createElement("type")
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typenode.appendChild(doc.createTextNode(type))
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modinfo.appendChild(typenode)
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title = get_first_element(section, "title")
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if title:
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children = title.childNodes
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if len(children) >= 2 \
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and children[0].nodeType == xml.dom.core.ELEMENT \
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and children[0].tagName == "module" \
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and children[0].childNodes[0].data == name:
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# this is it; morph the <title> into <short-synopsis>
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first_data = children[1]
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if first_data.data[:4] == " ---":
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first_data.data = string.lstrip(first_data.data[4:])
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title._node.name = "short-synopsis"
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if children[-1].data[-1:] == ".":
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children[-1].data = children[-1].data[:-1]
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section.removeChild(title)
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section.removeChild(section.childNodes[0])
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title.removeChild(children[0])
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modinfo_pos = 0
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else:
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sys.stderr.write(
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"module name in title doesn't match"
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" <declaremodule>; no <short-synopsis>\n")
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else:
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sys.stderr.write(
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"Unexpected condition: <section> without <title>\n")
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modinfo.appendChild(doc.createTextNode("\n "))
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modinfo.appendChild(node)
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if title and not contents_match(title, node):
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# The short synopsis is actually different,
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# and needs to be stored:
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modinfo.appendChild(doc.createTextNode("\n "))
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modinfo.appendChild(title)
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if modauthor:
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modinfo.appendChild(doc.createTextNode("\n "))
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modinfo.appendChild(modauthor)
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modinfo.appendChild(doc.createTextNode("\n "))
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section.insertBefore(modinfo, section.childNodes[modinfo_pos])
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section.insertBefore(doc.createTextNode("\n "), modinfo)
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def cleanup_synopses(doc):
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for node in doc.childNodes:
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if node.nodeType == xml.dom.core.ELEMENT \
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and node.tagName == "section":
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create_module_info(doc, node)
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def remap_element_names(root, name_map):
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queue = []
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for child in root.childNodes:
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if child.nodeType == xml.dom.core.ELEMENT:
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queue.append(child)
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while queue:
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node = queue.pop()
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tagName = node.tagName
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if name_map.has_key(tagName):
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name, attrs = name_map[tagName]
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node._node.name = name
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for attr, value in attrs.items():
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node.setAttribute(attr, value)
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for child in node.childNodes:
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if child.nodeType == xml.dom.core.ELEMENT:
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queue.append(child)
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def fixup_table_structures(doc):
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# must be done after remap_element_names(), or the tables won't be found
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for child in doc.childNodes:
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if child.nodeType == xml.dom.core.ELEMENT:
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tables = child.getElementsByTagName("table")
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for table in tables:
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fixup_table(doc, table)
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def fixup_table(doc, table):
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# create the table head
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thead = doc.createElement("thead")
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row = doc.createElement("row")
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move_elements_by_name(doc, table, row, "entry")
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thead.appendChild(doc.createTextNode("\n "))
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thead.appendChild(row)
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thead.appendChild(doc.createTextNode("\n "))
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# create the table body
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tbody = doc.createElement("tbody")
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prev_row = None
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last_was_hline = 0
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children = table.childNodes
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for child in children:
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if child.nodeType == xml.dom.core.ELEMENT:
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tagName = child.tagName
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if tagName == "hline" and prev_row is not None:
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prev_row.setAttribute("rowsep", "1")
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elif tagName == "row":
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prev_row = child
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# save the rows:
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tbody.appendChild(doc.createTextNode("\n "))
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move_elements_by_name(doc, table, tbody, "row", sep="\n ")
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# and toss the rest:
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while children:
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child = children[0]
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nodeType = child.nodeType
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if nodeType == xml.dom.core.TEXT:
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if string.strip(child.data):
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raise ConversionError("unexpected free data in table")
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table.removeChild(child)
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continue
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if nodeType == xml.dom.core.ELEMENT:
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if child.tagName != "hline":
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raise ConversionError(
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"unexpected <%s> in table" % child.tagName)
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table.removeChild(child)
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continue
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raise ConversionError(
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"unexpected %s node in table" % child.__class__.__name__)
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# nothing left in the <table>; add the <thead> and <tbody>
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tgroup = doc.createElement("tgroup")
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tgroup.appendChild(doc.createTextNode("\n "))
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tgroup.appendChild(thead)
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tgroup.appendChild(doc.createTextNode("\n "))
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tgroup.appendChild(tbody)
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tgroup.appendChild(doc.createTextNode("\n "))
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table.appendChild(tgroup)
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# now make the <entry>s look nice:
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for row in table.getElementsByTagName("row"):
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fixup_row(doc, row)
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def fixup_row(doc, row):
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entries = []
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map(entries.append, row.childNodes[1:])
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for entry in entries:
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row.insertBefore(doc.createTextNode("\n "), entry)
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# row.appendChild(doc.createTextNode("\n "))
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def move_elements_by_name(doc, source, dest, name, sep=None):
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nodes = []
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for child in source.childNodes:
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if child.nodeType == xml.dom.core.ELEMENT and child.tagName == name:
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nodes.append(child)
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for node in nodes:
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source.removeChild(node)
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dest.appendChild(node)
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if sep:
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dest.appendChild(doc.createTextNode(sep))
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FIXUP_PARA_ELEMENTS = (
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"chapter",
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"section", "subsection", "subsubsection",
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"paragraph", "subparagraph", "description",
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"opcodedesc", "classdesc",
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"funcdesc", "methoddesc", "excdesc", "datadesc",
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"funcdescni", "methoddescni", "excdescni", "datadescni",
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)
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PARA_LEVEL_ELEMENTS = (
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"moduleinfo", "title", "verbatim",
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"opcodedesc", "classdesc",
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"funcdesc", "methoddesc", "excdesc", "datadesc",
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"funcdescni", "methoddescni", "excdescni", "datadescni",
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"tableii", "tableiii", "tableiv", "localmoduletable",
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"sectionauthor",
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# include <para>, so we can just do it again to get subsequent paras:
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"para",
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)
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PARA_LEVEL_PRECEEDERS = (
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"index", "indexii", "indexiii", "indexiv",
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"stindex", "obindex", "COMMENT", "label",
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)
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def fixup_paras(doc):
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for child in doc.childNodes:
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if child.nodeType == xml.dom.core.ELEMENT \
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and child.tagName in FIXUP_PARA_ELEMENTS:
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fixup_paras_helper(doc, child)
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descriptions = child.getElementsByTagName("description")
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for description in descriptions:
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if DEBUG_PARA_FIXER:
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sys.stderr.write("-- Fixing up <description> element...\n")
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fixup_paras_helper(doc, description)
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def fixup_paras_helper(doc, container):
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# document is already normalized
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children = container.childNodes
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start = 0
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start_fixed = 0
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i = len(children)
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SKIP_ELEMENTS = PARA_LEVEL_ELEMENTS + PARA_LEVEL_PRECEEDERS
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if DEBUG_PARA_FIXER:
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sys.stderr.write("fixup_paras_helper() called on <%s>; %d, %d\n"
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% (container.tagName, start, i))
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if i > start:
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# the first [start:i] children shoudl be rewritten as <para> elements
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# start by breaking text nodes that contain \n\n+ into multiple nodes
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nstart, i = skip_leading_nodes(container.childNodes, start, i)
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if i > nstart:
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build_para(doc, container, nstart, i)
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fixup_paras_helper(doc, container)
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def build_para(doc, parent, start, i):
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children = parent.childNodes
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# collect all children until \n\n+ is found in a text node or a
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# PARA_LEVEL_ELEMENT is found.
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after = start + 1
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have_last = 0
|
|
BREAK_ELEMENTS = PARA_LEVEL_ELEMENTS + FIXUP_PARA_ELEMENTS
|
|
for j in range(start, i):
|
|
after = j + 1
|
|
child = children[j]
|
|
nodeType = child.nodeType
|
|
if nodeType == xml.dom.core.ELEMENT:
|
|
if child.tagName in BREAK_ELEMENTS:
|
|
after = j
|
|
break
|
|
elif nodeType == xml.dom.core.TEXT:
|
|
pos = string.find(child.data, "\n\n")
|
|
if pos == 0:
|
|
after = j
|
|
break
|
|
if pos >= 1:
|
|
child.splitText(pos)
|
|
break
|
|
else:
|
|
have_last = 1
|
|
if children[after - 1].nodeType == xml.dom.core.TEXT:
|
|
# we may need to split off trailing white space:
|
|
child = children[after - 1]
|
|
data = child.data
|
|
if string.rstrip(data) != data:
|
|
have_last = 0
|
|
child.splitText(len(string.rstrip(data)))
|
|
children = parent.childNodes
|
|
para = doc.createElement("para")
|
|
prev = None
|
|
indexes = range(start, after)
|
|
indexes.reverse()
|
|
for j in indexes:
|
|
node = children[j]
|
|
parent.removeChild(node)
|
|
para.insertBefore(node, prev)
|
|
prev = node
|
|
if have_last:
|
|
parent.appendChild(para)
|
|
else:
|
|
parent.insertBefore(para, parent.childNodes[start])
|
|
|
|
|
|
def skip_leading_nodes(children, start, i):
|
|
i = min(i, len(children))
|
|
while i > start:
|
|
# skip over leading comments and whitespace:
|
|
try:
|
|
child = children[start]
|
|
except IndexError:
|
|
sys.stderr.write(
|
|
"skip_leading_nodes() failed at index %d\n" % start)
|
|
raise
|
|
nodeType = child.nodeType
|
|
if nodeType == xml.dom.core.COMMENT:
|
|
start = start + 1
|
|
elif nodeType == xml.dom.core.TEXT:
|
|
data = child.data
|
|
shortened = string.lstrip(data)
|
|
if shortened:
|
|
if data != shortened:
|
|
# break into two nodes: whitespace and non-whitespace
|
|
child.splitText(len(data) - len(shortened))
|
|
return start + 1, i + 1
|
|
break
|
|
# all whitespace, just skip
|
|
start = start + 1
|
|
elif nodeType == xml.dom.core.ELEMENT:
|
|
if child.tagName in PARA_LEVEL_ELEMENTS + PARA_LEVEL_PRECEEDERS:
|
|
start = start + 1
|
|
else:
|
|
break
|
|
else:
|
|
break
|
|
return start, i
|
|
|
|
|
|
def fixup_rfc_references(doc):
|
|
rfc_nodes = []
|
|
for child in doc.childNodes:
|
|
if child.nodeType == xml.dom.core.ELEMENT:
|
|
kids = child.getElementsByTagName("rfc")
|
|
for k in kids:
|
|
rfc_nodes.append(k)
|
|
for rfc_node in rfc_nodes:
|
|
rfc_node.appendChild(doc.createTextNode(
|
|
"RFC " + rfc_node.getAttribute("num")))
|
|
|
|
|
|
def fixup_signatures(doc):
|
|
for child in doc.childNodes:
|
|
if child.nodeType == xml.dom.core.ELEMENT:
|
|
args = child.getElementsByTagName("args")
|
|
for arg in args:
|
|
fixup_args(doc, arg)
|
|
args = child.getElementsByTagName("constructor-args")
|
|
for arg in args:
|
|
fixup_args(doc, arg)
|
|
arg.normalize()
|
|
|
|
|
|
def fixup_args(doc, arglist):
|
|
for child in arglist.childNodes:
|
|
if child.nodeType == xml.dom.core.ELEMENT \
|
|
and child.tagName == "optional":
|
|
# found it; fix and return
|
|
arglist.insertBefore(doc.createTextNode("["), child)
|
|
optkids = child.childNodes
|
|
while optkids:
|
|
k = optkids[0]
|
|
child.removeChild(k)
|
|
arglist.insertBefore(k, child)
|
|
arglist.insertBefore(doc.createTextNode("]"), child)
|
|
arglist.removeChild(child)
|
|
return fixup_args(doc, arglist)
|
|
|
|
|
|
_token_rx = re.compile(r"[a-zA-Z][a-zA-Z0-9.-]*$")
|
|
|
|
def write_esis(doc, ofp, knownempty):
|
|
for node in doc.childNodes:
|
|
nodeType = node.nodeType
|
|
if nodeType == xml.dom.core.ELEMENT:
|
|
gi = node.tagName
|
|
if knownempty(gi):
|
|
if node.hasChildNodes():
|
|
raise ValueError, "declared-empty node has children"
|
|
ofp.write("e\n")
|
|
for k, v in node.attributes.items():
|
|
value = v.value
|
|
if _token_rx.match(value):
|
|
dtype = "TOKEN"
|
|
else:
|
|
dtype = "CDATA"
|
|
ofp.write("A%s %s %s\n" % (k, dtype, esistools.encode(value)))
|
|
ofp.write("(%s\n" % gi)
|
|
write_esis(node, ofp, knownempty)
|
|
ofp.write(")%s\n" % gi)
|
|
elif nodeType == xml.dom.core.TEXT:
|
|
ofp.write("-%s\n" % esistools.encode(node.data))
|
|
else:
|
|
raise RuntimeError, "unsupported node type: %s" % nodeType
|
|
|
|
|
|
def convert(ifp, ofp):
|
|
p = esistools.ExtendedEsisBuilder()
|
|
p.feed(ifp.read())
|
|
doc = p.document
|
|
normalize(doc)
|
|
handle_args(doc)
|
|
simplify(doc)
|
|
handle_labels(doc)
|
|
handle_appendix(doc)
|
|
fixup_trailing_whitespace(doc, {
|
|
"abstract": "\n",
|
|
"title": "",
|
|
"chapter": "\n\n",
|
|
"section": "\n\n",
|
|
"subsection": "\n\n",
|
|
"subsubsection": "\n\n",
|
|
"paragraph": "\n\n",
|
|
"subparagraph": "\n\n",
|
|
})
|
|
cleanup_root_text(doc)
|
|
cleanup_trailing_parens(doc, ["function", "method", "cfunction"])
|
|
cleanup_synopses(doc)
|
|
normalize(doc)
|
|
fixup_paras(doc)
|
|
remap_element_names(doc, {
|
|
"tableii": ("table", {"cols": "2"}),
|
|
"tableiii": ("table", {"cols": "3"}),
|
|
"tableiv": ("table", {"cols": "4"}),
|
|
"lineii": ("row", {}),
|
|
"lineiii": ("row", {}),
|
|
"lineiv": ("row", {}),
|
|
"refmodule": ("module", {"link": "link"}),
|
|
})
|
|
fixup_table_structures(doc)
|
|
fixup_rfc_references(doc)
|
|
fixup_signatures(doc)
|
|
#
|
|
d = {}
|
|
for gi in p.get_empties():
|
|
d[gi] = gi
|
|
if d.has_key("rfc"):
|
|
del d["rfc"]
|
|
knownempty = d.has_key
|
|
#
|
|
try:
|
|
write_esis(doc, ofp, knownempty)
|
|
except IOError, (err, msg):
|
|
# Ignore EPIPE; it just means that whoever we're writing to stopped
|
|
# reading. The rest of the output would be ignored. All other errors
|
|
# should still be reported,
|
|
if err != errno.EPIPE:
|
|
raise
|
|
|
|
|
|
def main():
|
|
if len(sys.argv) == 1:
|
|
ifp = sys.stdin
|
|
ofp = sys.stdout
|
|
elif len(sys.argv) == 2:
|
|
ifp = open(sys.argv[1])
|
|
ofp = sys.stdout
|
|
elif len(sys.argv) == 3:
|
|
ifp = open(sys.argv[1])
|
|
ofp = open(sys.argv[2], "w")
|
|
else:
|
|
usage()
|
|
sys.exit(2)
|
|
convert(ifp, ofp)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|