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##############################################################################
#
# Copyright (c) 2001, 2002 Zope Foundation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
""" Pretty-Print an Interface object as structured text (Yum)
This module provides a function, asStructuredText, for rendering an
interface as structured text.
"""
import zope.interface
def asStructuredText(I, munge=0, rst=False):
""" Output structured text format. Note, this will whack any existing
'structured' format of the text.
If `rst=True`, then the output will quote all code as inline literals in
accordance with 'reStructuredText' markup principles.
"""
if rst:
inline_literal = lambda s: "``%s``" % (s,)
else:
inline_literal = lambda s: s
r = [inline_literal(I.getName())]
outp = r.append
level = 1
if I.getDoc():
outp(_justify_and_indent(_trim_doc_string(I.getDoc()), level))
bases = [base
for base in I.__bases__
if base is not zope.interface.Interface
]
if bases:
outp(_justify_and_indent("This interface extends:", level, munge))
level += 1
for b in bases:
item = "o %s" % inline_literal(b.getName())
outp(_justify_and_indent(_trim_doc_string(item), level, munge))
level -= 1
namesAndDescriptions = sorted(I.namesAndDescriptions())
outp(_justify_and_indent("Attributes:", level, munge))
level += 1
for name, desc in namesAndDescriptions:
if not hasattr(desc, 'getSignatureString'): # ugh...
item = "%s -- %s" % (inline_literal(desc.getName()),
desc.getDoc() or 'no documentation')
outp(_justify_and_indent(_trim_doc_string(item), level, munge))
level -= 1
outp(_justify_and_indent("Methods:", level, munge))
level += 1
for name, desc in namesAndDescriptions:
if hasattr(desc, 'getSignatureString'): # ugh...
_call = "%s%s" % (desc.getName(), desc.getSignatureString())
item = "%s -- %s" % (inline_literal(_call),
desc.getDoc() or 'no documentation')
outp(_justify_and_indent(_trim_doc_string(item), level, munge))
return "\n\n".join(r) + "\n\n"
def asReStructuredText(I, munge=0):
""" Output reStructuredText format. Note, this will whack any existing
'structured' format of the text."""
return asStructuredText(I, munge=munge, rst=True)
def _trim_doc_string(text):
""" Trims a doc string to make it format
correctly with structured text. """
lines = text.replace('\r\n', '\n').split('\n')
nlines = [lines.pop(0)]
if lines:
min_indent = min([len(line) - len(line.lstrip())
for line in lines])
for line in lines:
nlines.append(line[min_indent:])
return '\n'.join(nlines)
def _justify_and_indent(text, level, munge=0, width=72):
""" indent and justify text, rejustify (munge) if specified """
indent = " " * level
if munge:
lines = []
line = indent
text = text.split()
for word in text:
line = ' '.join([line, word])
if len(line) > width:
lines.append(line)
line = indent
else:
lines.append(line)
return '\n'.join(lines)
else:
return indent + \
text.strip().replace("\r\n", "\n") .replace("\n", "\n" + indent)