ddfc587a2e
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@9995 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
626 lines
20 KiB
Python
626 lines
20 KiB
Python
#! /usr/bin/env python -- # -*- python -*-
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##############################################################################
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#
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# Zope Public License (ZPL) Version 1.0
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# -------------------------------------
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#
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# Copyright (c) Digital Creations. All rights reserved.
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#
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# This license has been certified as Open Source(tm).
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met:
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#
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# 1. Redistributions in source code must retain the above copyright
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# notice, this list of conditions, and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions, and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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#
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# 3. Digital Creations requests that attribution be given to Zope
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# in any manner possible. Zope includes a "Powered by Zope"
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# button that is installed by default. While it is not a license
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# violation to remove this button, it is requested that the
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# attribution remain. A significant investment has been put
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# into Zope, and this effort will continue if the Zope community
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# continues to grow. This is one way to assure that growth.
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#
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# 4. All advertising materials and documentation mentioning
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# features derived from or use of this software must display
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# the following acknowledgement:
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#
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# "This product includes software developed by Digital Creations
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# for use in the Z Object Publishing Environment
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# (http://www.zope.org/)."
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#
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# In the event that the product being advertised includes an
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# intact Zope distribution (with copyright and license included)
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# then this clause is waived.
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#
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# 5. Names associated with Zope or Digital Creations must not be used to
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# endorse or promote products derived from this software without
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# prior written permission from Digital Creations.
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#
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# 6. Modified redistributions of any form whatsoever must retain
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# the following acknowledgment:
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#
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# "This product includes software developed by Digital Creations
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# for use in the Z Object Publishing Environment
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# (http://www.zope.org/)."
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#
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# Intact (re-)distributions of any official Zope release do not
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# require an external acknowledgement.
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#
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# 7. Modifications are encouraged but must be packaged separately as
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# patches to official Zope releases. Distributions that do not
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# clearly separate the patches from the original work must be clearly
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# labeled as unofficial distributions. Modifications which do not
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# carry the name Zope may be packaged in any form, as long as they
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# conform to all of the clauses above.
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#
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#
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# Disclaimer
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#
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# THIS SOFTWARE IS PROVIDED BY DIGITAL CREATIONS ``AS IS'' AND ANY
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# EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL DIGITAL CREATIONS OR ITS
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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#
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# This software consists of contributions made by Digital Creations and
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# many individuals on behalf of Digital Creations. Specific
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# attributions are listed in the accompanying credits file.
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#
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##############################################################################
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'''Structured Text Manipulation
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Parse a structured text string into a form that can be used with
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structured formats, like html.
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Structured text is text that uses indentation and simple
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symbology to indicate the structure of a document.
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A structured string consists of a sequence of paragraphs separated by
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one or more blank lines. Each paragraph has a level which is defined
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as the minimum indentation of the paragraph. A paragraph is a
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sub-paragraph of another paragraph if the other paragraph is the last
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preceding paragraph that has a lower level.
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Special symbology is used to indicate special constructs:
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- A single-line paragraph whose immediately succeeding paragraphs are lower
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level is treated as a header.
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- A paragraph that begins with a '-', '*', or 'o' is treated as an
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unordered list (bullet) element.
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- A paragraph that begins with a sequence of digits followed by a
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white-space character is treated as an ordered list element.
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- A paragraph that begins with a sequence of sequences, where each
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sequence is a sequence of digits or a sequence of letters followed
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by a period, is treated as an ordered list element.
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- A paragraph with a first line that contains some text, followed by
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some white-space and '--' is treated as
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a descriptive list element. The leading text is treated as the
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element title.
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- Sub-paragraphs of a paragraph that ends in the word 'example' or the
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word 'examples', or '::' is treated as example code and is output as is.
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- Text enclosed single quotes (with white-space to the left of the
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first quote and whitespace or punctuation to the right of the second quote)
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is treated as example code.
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- Text surrounded by '*' characters (with white-space to the left of the
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first '*' and whitespace or punctuation to the right of the second '*')
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is emphasized.
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- Text surrounded by '**' characters (with white-space to the left of the
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first '**' and whitespace or punctuation to the right of the second '**')
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is made strong.
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- Text surrounded by '_' underscore characters (with whitespace to the left
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and whitespace or punctuation to the right) is made underlined.
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- Text encloded by double quotes followed by a colon, a URL, and concluded
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by punctuation plus white space, *or* just white space, is treated as a
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hyper link. For example:
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"Zope":http://www.zope.org/ is ...
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Is interpreted as '<a href="http://www.zope.org/">Zope</a> is ....'
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Note: This works for relative as well as absolute URLs.
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- Text enclosed by double quotes followed by a comma, one or more spaces,
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an absolute URL and concluded by punctuation plus white space, or just
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white space, is treated as a hyper link. For example:
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"mail me", mailto:amos@digicool.com.
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Is interpreted as '<a href="mailto:amos@digicool.com">mail me</a>.'
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- Text enclosed in brackets which consists only of letters, digits,
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underscores and dashes is treated as hyper links within the document.
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For example:
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As demonstrated by Smith [12] this technique is quite effective.
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Is interpreted as '... by Smith <a href="#12">[12]</a> this ...'. Together
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with the next rule this allows easy coding of references or end notes.
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- Text enclosed in brackets which is preceded by the start of a line, two
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periods and a space is treated as a named link. For example:
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.. [12] "Effective Techniques" Smith, Joe ...
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Is interpreted as '<a name="12">[12]</a> "Effective Techniques" ...'.
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Together with the previous rule this allows easy coding of references or
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end notes.
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- A paragraph that has blocks of text enclosed in '||' is treated as a
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table. The text blocks correspond to table cells and table rows are
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denoted by newlines. By default the cells are center aligned. A cell
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can span more than one column by preceding a block of text with an
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equivalent number of cell separators '||'. Newlines and '|' cannot
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be a part of the cell text. For example:
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|||| **Ingredients** ||
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|| *Name* || *Amount* ||
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||Spam||10||
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||Eggs||3||
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is interpreted as::
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<TABLE BORDER=1 CELLPADDING=2>
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<TR>
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<TD ALIGN=CENTER COLSPAN=2> <strong>Ingredients</strong> </TD>
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</TR>
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<TR>
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<TD ALIGN=CENTER COLSPAN=1> <em>Name</em> </TD>
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<TD ALIGN=CENTER COLSPAN=1> <em>Amount</em> </TD>
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</TR>
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<TR>
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<TD ALIGN=CENTER COLSPAN=1>Spam</TD>
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<TD ALIGN=CENTER COLSPAN=1>10</TD>
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</TR>
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<TR>
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<TD ALIGN=CENTER COLSPAN=1>Eggs</TD>
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<TD ALIGN=CENTER COLSPAN=1>3</TD>
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</TR>
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</TABLE>
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'''
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import ts_regex
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import regex
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from ts_regex import gsub
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from string import split, join, strip, find
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import string,re
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def untabify(aString,
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indent_tab=ts_regex.compile('\(\n\|^\)\( *\)\t').search_group,
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):
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'''\
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Convert indentation tabs to spaces.
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'''
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result=''
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rest=aString
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while 1:
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ts_results = indent_tab(rest, (1,2))
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if ts_results:
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start, grps = ts_results
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lnl=len(grps[0])
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indent=len(grps[1])
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result=result+rest[:start]
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rest="\n%s%s" % (' ' * ((indent/8+1)*8),
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rest[start+indent+1+lnl:])
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else:
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return result+rest
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def indent(aString, indent=2):
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"""Indent a string the given number of spaces"""
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r=split(untabify(aString),'\n')
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if not r: return ''
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if not r[-1]: del r[-1]
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tab=' '*level
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return "%s%s\n" % (tab,join(r,'\n'+tab))
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def reindent(aString, indent=2, already_untabified=0):
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"reindent a block of text, so that the minimum indent is as given"
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if not already_untabified: aString=untabify(aString)
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l=indent_level(aString)[0]
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if indent==l: return aString
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r=[]
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append=r.append
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if indent > l:
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tab=' ' * (indent-l)
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for s in split(aString,'\n'): append(tab+s)
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else:
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l=l-indent
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for s in split(aString,'\n'): append(s[l:])
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return join(r,'\n')
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def indent_level(aString,
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indent_space=ts_regex.compile('\n\( *\)').search_group,
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):
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'''\
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Find the minimum indentation for a string, not counting blank lines.
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'''
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start=0
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text='\n'+aString
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indent=l=len(text)
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while 1:
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ts_results = indent_space(text, (1,2), start)
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if ts_results:
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start, grps = ts_results
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i=len(grps[0])
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start=start+i+1
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if start < l and text[start] != '\n': # Skip blank lines
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if not i: return (0,aString)
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if i < indent: indent = i
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else:
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return (indent,aString)
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def paragraphs(list,start):
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l=len(list)
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level=list[start][0]
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i=start+1
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while i < l and list[i][0] > level: i=i+1
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return i-1-start
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def structure(list):
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if not list: return []
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i=0
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l=len(list)
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r=[]
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while i < l:
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sublen=paragraphs(list,i)
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i=i+1
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r.append((list[i-1][1],structure(list[i:i+sublen])))
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i=i+sublen
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return r
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class Table:
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CELL=' <TD ALIGN=CENTER COLSPAN=%i>%s</TD>\n'
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ROW=' <TR>\n%s </TR>\n'
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TABLE='\n<TABLE BORDER=1 CELLPADDING=2>\n%s</TABLE>'
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def create(self,aPar,
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td_reg=re.compile(r'[ \t\n]*\|\|([^\0x00|]*)')
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):
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'''parses a table and returns nested list representing the
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table'''
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self.table=[]
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text=filter(None,split(aPar,'\n'))
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for line in text:
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row=[]
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while 1:
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mo = td_reg.match(line)
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if not mo: return 0
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pos = mo.end(1)
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row.append(mo.group(1))
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if pos==len(line):break
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line=line[pos:]
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self.table.append(row)
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return 1
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def html(self):
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'''Creates an HTML representation of table'''
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htmltable=[]
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for row in self.table:
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htmlrow=[]
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colspan=1
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for cell in row:
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if cell=='':
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colspan=colspan+1
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continue
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else:
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htmlrow.append(self.CELL%(colspan,cell))
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colspan=1
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htmltable.append(self.ROW%join(htmlrow,''))
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return self.TABLE%join(htmltable,'')
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table=Table()
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class StructuredText:
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"""Model text as structured collection of paragraphs.
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Structure is implied by the indentation level.
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This class is intended as a base classes that do actual text
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output formatting.
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"""
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def __init__(self, aStructuredString, level=0,
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paragraph_divider=regex.compile('\(\r?\n *\)+\r?\n'),
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):
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'''Convert a structured text string into a structured text object.
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Aguments:
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aStructuredString -- The string to be parsed.
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level -- The level of top level headings to be created.
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'''
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pat = ' \"([%s0-9-_,./?=@~&]*)\":' % string.letters+ \
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'([-:%s0-9_,./?=@#~&]*?)' % string.letters + \
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'([.:?;] )'
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p_reg = re.compile(pat,re.M)
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aStructuredString = p_reg.sub(r'<a href="\2">\1</a>\3 ' , aStructuredString)
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pat = ' \"([%s0-9-_,./?=@~&]*)\", ' % string.letters+ \
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'([-:%s0-9_,./?=@#~&]*?)' % string.letters + \
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'([.:?;] )'
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p_reg = re.compile(pat,re.M)
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aStructuredString = p_reg.sub(r'<a href="\2">\1</a>\3 ' , aStructuredString)
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protoless = find(aStructuredString, '<a href=":')
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if protoless != -1:
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aStructuredString = re.sub('<a href=":', '<a href="',
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aStructuredString)
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self.level=level
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paragraphs=ts_regex.split(untabify(aStructuredString),
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paragraph_divider)
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paragraphs=map(indent_level,paragraphs)
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self.structure=structure(paragraphs)
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def __str__(self):
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return str(self.structure)
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ctag_prefix=r'([\x00- \\(]|^)'
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ctag_suffix=r'([\x00- ,.:;!?\\)]|$)'
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ctag_middle=r'[%s]([^\x00- %s][^%s]*[^\x00- %s]|[^%s])[%s]'
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ctag_middl2=r'[%s][%s]([^\x00- %s][^%s]*[^\x00- %s]|[^%s])[%s][%s]'
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def ctag(s,
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em=re.compile(
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ctag_prefix+(ctag_middle % (("*",)*6) )+ctag_suffix),
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strong=re.compile(
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ctag_prefix+(ctag_middl2 % (("*",)*8))+ctag_suffix),
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under=re.compile(
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ctag_prefix+(ctag_middle % (("_",)*6) )+ctag_suffix),
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code=re.compile(
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ctag_prefix+(ctag_middle % (("\'",)*6))+ctag_suffix),
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):
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if s is None: s=''
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s=strong.sub(r'\1<strong>\2</strong>\3',s)
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s=under.sub( r'\1<u>\2</u>\3',s)
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s=code.sub( r'\1<code>\2</code>\3',s)
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s=em.sub( r'\1<em>\2</em>\3',s)
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return s
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class HTML(StructuredText):
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'''\
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An HTML structured text formatter.
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'''\
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def __str__(self,
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extra_dl=re.compile("</dl>\n<dl>"),
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extra_ul=re.compile("</ul>\n<ul>"),
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extra_ol=re.compile("</ol>\n<ol>"),
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):
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'''\
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Return an HTML string representation of the structured text data.
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'''
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s=self._str(self.structure,self.level)
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s=extra_dl.sub('\n',s)
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s=extra_ul.sub('\n',s)
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s=extra_ol.sub('\n',s)
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return s
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def ul(self, before, p, after):
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if p: p="<p>%s</p>" % strip(ctag(p))
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return ('%s<ul><li>%s\n%s\n</li></ul>\n'
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% (before,p,after))
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def ol(self, before, p, after):
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if p: p="<p>%s</p>" % strip(ctag(p))
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return ('%s<ol><li>%s\n%s\n</li></ol>\n'
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% (before,p,after))
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def dl(self, before, t, d, after):
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return ('%s<dl><dt>%s</dt><dd><p>%s</p>\n%s\n</dd></dl>\n'
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% (before,ctag(t),ctag(d),after))
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def head(self, before, t, level, d):
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if level > 0 and level < 6:
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return ('%s<h%d>%s</h%d>\n%s\n'
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% (before,level,strip(ctag(t)),level,d))
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t="<p><strong>%s</strong></p>" % strip(ctag(t))
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return ('%s<dl><dt>%s\n</dt><dd>%s\n</dd></dl>\n'
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% (before,t,d))
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def normal(self,before,p,after):
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return '%s<p>%s</p>\n%s\n' % (before,ctag(p),after)
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def pre(self,structure,tagged=0):
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if not structure: return ''
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if tagged:
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r=''
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else:
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r='<PRE>\n'
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for s in structure:
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r="%s%s\n\n%s" % (r,html_quote(s[0]),self.pre(s[1],1))
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if not tagged: r=r+'</PRE>\n'
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return r
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def table(self,before,table,after):
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return '%s<p>%s</p>\n%s\n' % (before,ctag(table),after)
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def _str(self,structure,level,
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# Static
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bullet=ts_regex.compile('[ \t\n]*[o*-][ \t\n]+\([^\0]*\)'
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).match_group,
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example=ts_regex.compile('[\0- ]examples?:[\0- ]*$'
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).search,
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dl=ts_regex.compile('\([^\n]+\)[ \t]+--[ \t\n]+\([^\0]*\)'
|
|
).match_group,
|
|
nl=ts_regex.compile('\n').search,
|
|
ol=ts_regex.compile(
|
|
'[ \t]*\(\([0-9]+\|[%s]+\)[.)]\)+[ \t\n]+\([^\0]*\|$\)' % string.letters
|
|
).match_group,
|
|
olp=ts_regex.compile('[ \t]*([0-9]+)[ \t\n]+\([^\0]*\|$\)'
|
|
).match_group,
|
|
):
|
|
r=''
|
|
for s in structure:
|
|
|
|
ts_results = bullet(s[0], (1,))
|
|
if ts_results:
|
|
p = ts_results[1]
|
|
if s[0][-2:]=='::' and s[1]: ps=self.pre(s[1])
|
|
else: ps=self._str(s[1],level)
|
|
r=self.ul(r,p,ps)
|
|
continue
|
|
ts_results = ol(s[0], (3,))
|
|
if ts_results:
|
|
p = ts_results[1]
|
|
if s[0][-2:]=='::' and s[1]: ps=self.pre(s[1])
|
|
else: ps=self._str(s[1],level)
|
|
r=self.ol(r,p,ps)
|
|
continue
|
|
ts_results = olp(s[0], (1,))
|
|
if ts_results:
|
|
p = ts_results[1]
|
|
if s[0][-2:]=='::' and s[1]: ps=self.pre(s[1])
|
|
else: ps=self._str(s[1],level)
|
|
r=self.ol(r,p,ps)
|
|
continue
|
|
ts_results = dl(s[0], (1,2))
|
|
if ts_results:
|
|
t,d = ts_results[1]
|
|
r=self.dl(r,t,d,self._str(s[1],level))
|
|
continue
|
|
if example(s[0]) >= 0 and s[1]:
|
|
# Introduce an example, using pre tags:
|
|
r=self.normal(r,s[0],self.pre(s[1]))
|
|
continue
|
|
if s[0][-2:]=='::' and s[1]:
|
|
# Introduce an example, using pre tags:
|
|
r=self.normal(r,s[0][:-1],self.pre(s[1]))
|
|
continue
|
|
if table.create(s[0]):
|
|
## table support.
|
|
r=self.table(r,table.html(),self._str(s[1],level))
|
|
continue
|
|
else:
|
|
|
|
if nl(s[0]) < 0 and s[1] and s[0][-1:] != ':':
|
|
# Treat as a heading
|
|
t=s[0]
|
|
r=self.head(r,t,level,
|
|
self._str(s[1],level and level+1))
|
|
else:
|
|
r=self.normal(r,s[0],self._str(s[1],level))
|
|
return r
|
|
|
|
|
|
def html_quote(v,
|
|
character_entities=(
|
|
(re.compile('&'), '&'),
|
|
(re.compile("<"), '<' ),
|
|
(re.compile(">"), '>' ),
|
|
(re.compile('"'), '"')
|
|
)): #"
|
|
text=str(v)
|
|
for re,name in character_entities:
|
|
text=re.sub(name,text)
|
|
return text
|
|
|
|
def html_with_references(text, level=1):
|
|
text = re.sub(
|
|
r'[\0\n]\.\. \[([0-9_%s-]+)\]' % string.letters,
|
|
r'\n <a name="\1">[\1]</a>',
|
|
text)
|
|
|
|
text = re.sub(
|
|
r'([\x00- ,])\[(?P<ref>[0-9_%s-]+)\]([\x00- ,.:])' % string.letters,
|
|
r'\1<a href="#\2">[\2]</a>\3',
|
|
text)
|
|
|
|
text = re.sub(
|
|
r'([\0- ,])\[([^]]+)\.html\]([\0- ,.:])',
|
|
r'\1<a href="\2.html">[\2]</a>\3',
|
|
text)
|
|
|
|
return HTML(text,level=level)
|
|
|
|
|
|
def main():
|
|
import sys, getopt
|
|
|
|
opts,args=getopt.getopt(sys.argv[1:],'twl')
|
|
|
|
if args:
|
|
[infile]=args
|
|
s=open(infile,'r').read()
|
|
else:
|
|
s=sys.stdin.read()
|
|
|
|
if opts:
|
|
|
|
if filter(lambda o: o[0]=='-w', opts):
|
|
print 'Content-Type: text/html\n'
|
|
|
|
if filter(lambda o: o[0]=='-l', opts):
|
|
import locale
|
|
locale.setlocale(locale.LC_ALL,"")
|
|
|
|
if s[:2]=='#!':
|
|
s=re.sub('^#![^\n]+','',s)
|
|
|
|
mo = re.compile('([\0-\n]*\n)').match(s)
|
|
if mo is not None:
|
|
s = s[len(mo.group(0)) :]
|
|
|
|
s=str(html_with_references(s))
|
|
if s[:4]=='<h1>':
|
|
t=s[4:find(s,'</h1>')]
|
|
s='''<html><head><title>%s</title>
|
|
</head><body>
|
|
%s
|
|
</body></html>
|
|
''' % (t,s)
|
|
print s
|
|
else:
|
|
print html_with_references(s)
|
|
|
|
if __name__=="__main__": main()
|