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@mdipierro
Created March 10, 2014 04:00
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"""
Usage:
python jinja2web2py.py jinjatemplate.html > web2pytemplate.html
Disclaimer. It is not perfect. Some times minor manual tweaks may be necessary.
Notice the web2py template language was invented in 2007 and consists of pure Python code.
The opposite conversion is not possible because Python code cannot be converted to a jinja template.
"""
import sys
import re
codee = re.compile('\{\{(.*?)\|\s*e\s*\%\}',re.DOTALL)
codeprint = re.compile('\{\{(.*?)\}\}',re.DOTALL)
extends = re.compile('\{\%\s*extends\s+(.*?)\%\}',re.DOTALL)
endblock = re.compile('\{\%\s*endblock\s+(.*?)\%\}',re.DOTALL)
macro = re.compile('\{\%\s*macro\s+(.*?)\%\}',re.DOTALL)
endmacro = re.compile('\{\%\s*endmacro\s+(.*?)\%\}',re.DOTALL)
endif = re.compile('\{\%\s*endif\s*\%\}',re.DOTALL)
endfor = re.compile('\{\%\s*endfor\s*\%\}',re.DOTALL)
refor_sort = re.compile('\{\%\s*for\s+(.*?)\s+in\s+(.*?)\s*\|\s*sort\s*\%\}',re.DOTALL)
reif = re.compile('\{\%\s*(for .*?|if .*?|elif .*?|else)\s*\%\}',re.DOTALL)
code = re.compile('\{\%(.*?)\%\}',re.DOTALL)
def convert(data):
data = codee.sub('{{=\g<1>}}',data) # web2py always escapes by default
data = codeprint.sub('{{=\g<1>}}',data)
data = extends.sub('{{ extends \g<1>}}',data)
data = endblock.sub('{{ end }}', data)
data = macro.sub('{{ def g<1>: }}',data) # web2py invented this, not jinja
data = endmacro.sub('{{ return }}',data)
data = endif.sub('{{ pass }}',data)
data = endfor.sub('{{ pass }}',data)
data = refor_sort.sub('{{ for \g<1> in sorted(\g<2>): }}', data)
data = reif.sub('{{ \g<1>: }}', data)
data = code.sub('{{\g<1>}}',data)
return data
print convert(open(sys.argv[1]).read())
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