Latex tables using tabular instead of longtable

Latex tables using tabular instead of longtable

[Wagner Macedo]

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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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Re: Latex tables using tabular instead of longtable

[John MacFarlane]

Thanks for sharing.  How does it deal with footnotes in tables?
(That is one thing that longtable does better.)

+++ Wagner Macedo [Jun 30 14 22:59 ]:
>   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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Re: Latex tables using tabular instead of longtable

[Wagner Macedo]

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Well, I didn't think in that! Probably because I never needed.

But I remember long time ago something about it. I will search and post so.

--
Wagner Macedo


On 1 July 2014 00:39, John MacFarlane <jgm-TVLZxgkOlNX2fBVCVOL8/A@public.gmane.org> wrote:

> Thanks for sharing.  How does it deal with footnotes in tables?
> (That is one thing that longtable does better.)
>
> +++ Wagner Macedo [Jun 30 14 22:59 ]:
>
>>   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
>>
>

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Re: Latex tables using tabular instead of longtable

[Jan Hermes]

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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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Re: Latex tables using tabular instead of longtable

[Leon Bartz]

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Hi, the script does not Work with the example below. Can somebody please 
help ? Tanks

> <table>
>
> <thead>
>
> <tr>
>
> <th>1</th>
>
> <th>2</th>
>
> <th>3</th>
>
> <th>4</th>
>
> </tr>
>
> </thead>
>
> <tbody>
>
> <tr>
>
> <td>5</td>
>
> <td>6</td>
>
> <td>7</td>
>
> <td></td>
>
> </tr>
>
> <tr>
>
> <td>8</td>
>
> <td>9</td>
>
> <td>1</td>
>
> <td>2</td>
>
> </tr>
>
> <tr>
>
> <td>3</td>
>
> <td>4</td>
>
> <td>5</td>
>
> <td></td>
>
> </tr>
>
> </tbody>
>
> </table> 
>
> 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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