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