| # copyright 2003-2011 LOGILAB S.A. (Paris, FRANCE), all rights reserved. |
| # contact http://www.logilab.fr/ -- mailto:contact@logilab.fr |
| # |
| # This file is part of logilab-common. |
| # |
| # logilab-common is free software: you can redistribute it and/or modify it under |
| # the terms of the GNU Lesser General Public License as published by the Free |
| # Software Foundation, either version 2.1 of the License, or (at your option) any |
| # later version. |
| # |
| # logilab-common is distributed in the hope that it will be useful, but WITHOUT |
| # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
| # FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more |
| # details. |
| # |
| # You should have received a copy of the GNU Lesser General Public License along |
| # with logilab-common. If not, see <http://www.gnu.org/licenses/>. |
| """Manipulate pdf and fdf files (pdftk recommended). |
| |
| Notes regarding pdftk, pdf forms and fdf files (form definition file) |
| fields names can be extracted with: |
| |
| pdftk orig.pdf generate_fdf output truc.fdf |
| |
| to merge fdf and pdf: |
| |
| pdftk orig.pdf fill_form test.fdf output result.pdf [flatten] |
| |
| without flatten, one could further edit the resulting form. |
| with flatten, everything is turned into text. |
| |
| |
| |
| |
| """ |
| __docformat__ = "restructuredtext en" |
| # XXX seems very unix specific |
| # TODO: check availability of pdftk at import |
| |
| |
| import os |
| |
| HEAD="""%FDF-1.2 |
| %\xE2\xE3\xCF\xD3 |
| 1 0 obj |
| << |
| /FDF |
| << |
| /Fields [ |
| """ |
| |
| TAIL="""] |
| >> |
| >> |
| endobj |
| trailer |
| |
| << |
| /Root 1 0 R |
| >> |
| %%EOF |
| """ |
| |
| def output_field( f ): |
| return "\xfe\xff" + "".join( [ "\x00"+c for c in f ] ) |
| |
| def extract_keys(lines): |
| keys = [] |
| for line in lines: |
| if line.startswith('/V'): |
| pass #print 'value',line |
| elif line.startswith('/T'): |
| key = line[7:-2] |
| key = ''.join(key.split('\x00')) |
| keys.append( key ) |
| return keys |
| |
| def write_field(out, key, value): |
| out.write("<<\n") |
| if value: |
| out.write("/V (%s)\n" %value) |
| else: |
| out.write("/V /\n") |
| out.write("/T (%s)\n" % output_field(key) ) |
| out.write(">> \n") |
| |
| def write_fields(out, fields): |
| out.write(HEAD) |
| for (key, value, comment) in fields: |
| write_field(out, key, value) |
| write_field(out, key+"a", value) # pour copie-carbone sur autres pages |
| out.write(TAIL) |
| |
| def extract_keys_from_pdf(filename): |
| # what about using 'pdftk filename dump_data_fields' and parsing the output ? |
| os.system('pdftk %s generate_fdf output /tmp/toto.fdf' % filename) |
| lines = file('/tmp/toto.fdf').readlines() |
| return extract_keys(lines) |
| |
| |
| def fill_pdf(infile, outfile, fields): |
| write_fields(file('/tmp/toto.fdf', 'w'), fields) |
| os.system('pdftk %s fill_form /tmp/toto.fdf output %s flatten' % (infile, outfile)) |
| |
| def testfill_pdf(infile, outfile): |
| keys = extract_keys_from_pdf(infile) |
| fields = [] |
| for key in keys: |
| fields.append( (key, key, '') ) |
| fill_pdf(infile, outfile, fields) |
| |
