Thank you very much for sharing!

Unfortunately this produces an error "IndexError:list index out of range" 
in a recent pandoc version: 1.19.2.1

Traceback (most recent call last):
  File "filters/tabular.py", line 53, in <module>
    pf.toJSONFilter(do_filter)
  File "/usr/local/lib/python2.7/dist-packages/pandocfilters.py", line 132, 
in toJSONFilter
    toJSONFilters([action])
  File "/usr/local/lib/python2.7/dist-packages/pandocfilters.py", line 166, 
in toJSONFilters
    sys.stdout.write(applyJSONFilters(actions, source, format))
  File "/usr/local/lib/python2.7/dist-packages/pandocfilters.py", line 197, 
in applyJSONFilters
    altered = walk(altered, action, format, meta)
  File "/usr/local/lib/python2.7/dist-packages/pandocfilters.py", line 124, 
in walk
    x[k] = walk(x[k], action, format, meta)
  File "/usr/local/lib/python2.7/dist-packages/pandocfilters.py", line 111, 
in walk
    item['c'] if 'c' in item else None, format, meta)
  File "filters/tabular.py", line 46, in do_filter
    tbl_headers(v[3]),
  File "filters/tabular.py", line 22, in tbl_headers
    result = s[0][0]['c'][:]
IndexError: list index out of range
pandoc: Error running filter filters/tabular.py
Filter returned error status 1




Am Dienstag, 1. Juli 2014 03:59:26 UTC+2 schrieb Wagner Macedo:
>
> Hello guys.
>
> I don't like how *longtable* handle with tables, spanning across pages 
> without needing, so I took advantage of the filtering mechanism and I did a 
> filter in python to generate the tables in a more traditional way (in the 
> sense of Latex) and I'm sharing with you below.
>
> Please make suggestions, I did the things a few hardcoded because I didn't 
> see other way.
>
> To understand what the filter do, let's say I have a file with the 
> following table:
>
> *test.mkd*
>
> Code   Name
> ------  ------
>   1     Pandoc
>   2     Latex
>   3     Writer
>
> Table: My *best* tools
>
> The normal generated latex code would be
>
> *test-longtable.tex*
>
> \begin{longtable}[c]{@{}cl@{}}
> \toprule\addlinespace
> Code & Name
> \\\addlinespace
> \midrule\endhead
> 1 & Pandoc
> \\\addlinespace
> 2 & Latex
> \\\addlinespace
> 3 & Writer
> \\\addlinespace
> \bottomrule
> \addlinespace
> \caption{My \emph{best} tools}
> \end{longtable}
>
> But using the filter, the latex code will be
>
> *test-tabular.tex*
>
> \begin{table}[ht]
>
> \caption{My \emph{best} tools}
>
> \begin{tabular}{@{}cl@{}}
> \toprule
>
> Code & Name \\\midrule
>
> 1 & Pandoc \\
> 2 & Latex \\
> 3 & Writer \\
>
> \bottomrule
> \end{tabular}
>
> \end{table}
>
> Note I put \caption above as is more common to my writings.
>
> *filter.py*
>
> import pandocfilters as pf
> def latex(s):
>     return pf.RawBlock('latex', s)
> def inlatex(s):
>     return pf.RawInline('latex', s)
> def tbl_caption(s):
>     return pf.Para([inlatex(r'\caption{')] + s + [inlatex('}')])
> def tbl_alignment(s):
>     aligns = {
>         "AlignDefault": 'l',
>         "AlignLeft": 'l',
>         "AlignCenter": 'c',
>         "AlignRight": 'r',
>     }
>     return ''.join([aligns[e['t']] for e in s])
> def tbl_headers(s):
>     result = s[0][0]['c'][:]
>     for i in range(1, len(s)):
>         result.append(inlatex(' & '))
>         result.extend(s[i][0]['c'])
>     result.append(inlatex(r' \\\midrule'))
>     return pf.Para(result)
> def tbl_contents(s):
>     result = []
>     for row in s:
>         para = []
>         for col in row:
>             para.extend(col[0]['c'])
>             para.append(inlatex(' & '))
>         result.extend(para)
>         result[-1] = inlatex(r' \\' '\n')
>     return pf.Para(result)
> def do_filter(k, v, f, m):
>     if k == "Table":
>         return [latex(r'\begin{table}[ht]' '\n' r'\centering' '\n'),
>                 tbl_caption(v[0]),
>                 latex(r'\begin{tabular}{@{}%s@{}}' % tbl_alignment(v[1]) +
>                       ('\n' r'\toprule')),
>                 tbl_headers(v[3]),
>                 tbl_contents(v[4]),
>                 latex(r'\bottomrule' '\n' r'\end{tabular}'),
>                 latex(r'\end{table}')]
>
> if __name__ == "__main__":
>     pf.toJSONFilter(do_filter)
>
> --
> Wagner Macedo 
>

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