Pandoc filters for Memoir

dropcaps.py

#!/usr/bin/env python

"""
Pandoc filter to turn the first letter of a new chapter into a raised initial,
and the rest of the word into small caps, using the lettrine package.
"""

from pandocfilters import toJSONFilter, walk, RawInline, Header, Para, Str, Quoted
import sys

firstpara = False
backmatter = False

endquote = RawInline('latex', "''")

def lettrine(v, withquote=False):
    if withquote == True:
        latex = RawInline('latex', '\\lettrine[lines=2,ante=``]{%s}{%s}' % (v['c'][0], v['c'][1:]))
        return latex
    else:
        latex = RawInline('latex', '\\lettrine[lines=2]{%s}{%s}' % (v['c'][0], v['c'][1:]))
        return latex

def action(k, v, fmt, meta):
    global firstpara
    global backmatter
    if k == 'RawInline' and v[1].find('backmatter') != -1:
        # I don't really like raised initials/dropcaps in the back sections,
        # so I'll disable them once I see "\backmatter".
        backmatter = True
    if k == 'Header' and v[0] == 1:
        firstpara = True
        return None
    elif firstpara == True:
        # We add the lettrine markup to the 1st paragraph after a Heading 1
        if k == 'Para':
            firstpara = False
            if v[0]['t'] == 'Quoted':
                # If the paragraph starts with a quotation mark,
                # things get a bit more complicated.
                # These two lines break up Pandoc's "Quoted" structure
                # and add in the close quote manually.
                # Hacky, but it works.
                inner = v[0]['c'][1]
                par = Para([lettrine(inner[0], True)] + inner[1:] + [endquote] + v[1:])
            else:
                par = Para([lettrine(v[0])] + v[1:])
            return par
        else:
            return None
    else:
        firstpara = False
        return None

if __name__ == "__main__":
    toJSONFilter(action)
    sys.stdout.flush()

fancybreak.py

#!/usr/bin/env python

"""
Pandoc filter to convert horizontal rules (* * *)
to the "plain or fancy break" used by the LaTeX memoir class
"""

from pandocfilters import toJSONFilter, RawBlock, HorizontalRule
import sys

def action(k, v, fmt, meta):
    if k == 'HorizontalRule':
        return RawBlock('latex', '\\pfbreak')

if __name__ == "__main__":
    toJSONFilter(action)
    sys.stdout.flush()

raisedinitials.py

#!/usr/bin/env python

"""
Pandoc filter to turn the first letter of a new chapter into a raised initial,
and the rest of the word into small caps, using the lettrine package.
"""

from pandocfilters import toJSONFilter, walk, RawInline, Header, Para, Str, Quoted
import sys

firstpara = False
backmatter = False

endquote = RawInline('latex', "''")

def lettrine(v, withquote=False):
    latex = RawInline('latex', '\\lettrine[lines=1]{%s}{%s}' % (v['c'][0], v['c'][1:]))
    return latex

def action(k, v, fmt, meta):
    global firstpara
    global backmatter
    if k == 'RawInline' and v[1].find('backmatter') != -1:
        # I don't really like raised initials/dropcaps in the back sections,
        # so I'll disable them once I see "\backmatter".
        backmatter = True
    if k == 'Header' and v[0] == 1 and not backmatter:
        firstpara = True
        return None
    elif firstpara == True:
        # We add the lettrine markup to the 1st paragraph after a Heading 1
        if k == 'Para':
            firstpara = False
            if v[0]['t'] == 'Quoted':
                # If the paragraph starts with a quotation mark,
                # things get a bit more complicated.
                # These two lines break up Pandoc's "Quoted" structure
                # and add in the close quote manually.
                # Hacky, but it works.
                inner = v[0]['c'][1]
                par = Para([lettrine(inner[0])] + inner[1:] + [endquote] + v[1:])
            else:
                par = Para([lettrine(v[0])] + v[1:])
            return par
        else:
            return None
    else:
        firstpara = False
        return None

if __name__ == "__main__":
    toJSONFilter(action)
    sys.stdout.flush()

writelinks.py

#!/usr/bin/env python

"""
Pandoc filter that replaces link elements with their targets in parentheses.
The link address will be written directly after the alt text, as preformatted text.
"""

from pandocfilters import toJSONFilter, Str, Space, Code
import sys

def action(k, v, fmt, meta):
    if k == 'Link':
        linktext = Code(('',[],[]), v[2][0])
        writeout = [Space(), Str('('), linktext, Str(')')]
        return v[1] + writeout

if __name__ == "__main__":
    toJSONFilter(action)
    sys.stdout.flush()