seeddms-code/doc/README.Converters

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Conversion to text for fulltext search
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text/plain
text/csv
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application/csv
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cat '%s'
application/pdf
pdftotext -nopgbrk %s - | sed -e 's/ [a-zA-Z0-9.]\{1\} / /g' -e 's/[0-9.]//g'
application/vnd.openxmlformats-officedocument.wordprocessingml.document
docx2txt '%s' -
application/msword
catdoc %s
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
xlsx2csv %s
application/vnd.ms-excel
xls2csv %s
text/html
html2text %s
Many office formats
unoconv -d document -f txt --stdout '%s'
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Apache Tika is another option for creating plain text from various document
types. Just use curl to send the document to your tika server and get the
plain text in return.
curl -s -T '%s' http://localhost:9998/tika --header 'Accept: text/plain'
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Conversion to pdf for pdf preview
==================================
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text/plain
text/csv
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application/csv
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application/vnd.oasis.opendocument.text
application/msword
application/vnd.wordperfect
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text/rtf
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unoconv -d document -f pdf --stdout -v '%f' > '%o'
image/png
image/jpg
image/jpeg
convert -f pdf -density 300 '%f' '%o'
application/vnd.ms-powerpoint
application/vnd.openxmlformats-officedocument.presentationml.presentation
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application/vnd.oasis.opendocument.presentation
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unoconv -d presentation -f pdf --stdout -v '%f' > '%o'
application/vnd.ms-excel
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
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application/vnd.oasis.opendocument.spreadsheet
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unoconv -d spreadsheet -f pdf --stdout -v '%f' > '%o'
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Conversion to png for preview images
=====================================
If you have problems running convert on PDF documents then read this page
https://askubuntu.com/questions/1081895/trouble-with-batch-conversion-of-png-to-pdf-using-convert
It basically instructs you to comment out the line
<policy domain="coder" rights="none" pattern="PDF" />
in /etc/ImageMagick-6/policy.xml
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image/jpg
image/jpeg
image/png
convert -resize %wx '%f' '%o'
application/pdf
gs -dBATCH -dNOPAUSE -sDEVICE=png16m -dPDFFitPage -r72x72 -sOutputFile=- -dFirstPage=1 -dLastPage=1 -q '%f' | convert -resize %wx png:- '%o'
text/plain
a2ps -1 -a1 -R -B -o - '%f' | gs -dBATCH -dNOPAUSE -sDEVICE=png16m -dFirstPage=1 -dLastPage=1 -dPDFFitPage -r72x72 -sOutputFile=- -q - | convert -resize %wx png:- '%o'
application/msword
application/vnd.oasis.opendocument.spreadsheet
application/vnd.oasis.opendocument.text
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
application/vnd.ms-excel
application/vnd.openxmlformats-officedocument.wordprocessingml.document
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text/rtf
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application/vnd.ms-powerpoint
text/csv
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application/csv
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application/vnd.wordperfect
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unoconv -d document -e PageRange=1 -f pdf --stdout -v '%f' | gs -dBATCH -dNOPAUSE -sDEVICE=pngalpha -dPDFFitPage -r72x72 -sOutputFile=- -dFirstPage=1 -dLastPage=1 -q - | convert -resize %wx png:- '%o'
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