私は Python 3.3 を使用しており、素晴らしい fgfgen / forge_fdf スクリプトを利用しようとしています (ありがとう、ところで)。
fdfgen のサンプル テストを実行しようとすると、次のエラーが返されます。
safe = utf16.replace('\x00)', '\x00\\)').replace('\x00(', '\x00\\(')
TypeError: expected bytes, bytearray or buffer compatible object
周りを見回した後、これはpython 3がユニコードエンコーディングを処理した結果のようですか? しかし、私は確信が持てません。これは、実行された fdfgen コードのサンプルであり、その後に非常に適切に提供された fdfgen コードが続きます。前もって感謝します：
>>> from fdfgen import forge_fdf
>>> fields = [('last_name', u'Spencer')]
>>> fdf = forge_fdf('SMBRPython.pdf', fields, [], [], [])
# -*- coding: utf-8 -*-
"""
Port of the PHP forge_fdf library by Sid Steward
(http://www.pdfhacks.com/forge_fdf/)
Anders Pearson <anders@columbia.edu> at Columbia Center For New Media Teaching
and Learning <http://ccnmtl.columbia.edu/>
"""
__author__ = "Anders Pearson <anders@columbia.edu>"
__credits__ = ("Sébastien Fievet <zyegfryed@gmail.com>,"
"Brandon Rhodes <brandon@rhodesmill.org>")
import codecs
def smart_encode_str(s):
"""Create a UTF-16 encoded PDF string literal for `s`."""
utf16 = s.encode('utf_16_be')
safe = utf16.replace('\x00)', '\x00\\)').replace('\x00(', '\x00\\(')
return ('%s%s' % (codecs.BOM_UTF16_BE, safe))
def handle_hidden(key, fields_hidden):
if key in fields_hidden:
return "/SetF 2"
else:
return "/ClrF 2"
def handle_readonly(key, fields_readonly):
if key in fields_readonly:
return "/SetFf 1"
else:
return "/ClrFf 1"
def handle_data_strings(fdf_data_strings, fields_hidden, fields_readonly):
for (key, value) in fdf_data_strings:
if type(value) is bool:
if value:
yield "<<\n/V/Yes\n/T (%s)\n%s\n%s\n>>\n" % (
smart_encode_str(key),
handle_hidden(key, fields_hidden),
handle_readonly(key, fields_readonly),
)
else:
yield "<<\n/V/Off\n/T (%s)\n%s\n%s\n>>\n" % (
smart_encode_str(key),
handle_hidden(key, fields_hidden),
handle_readonly(key, fields_readonly),
)
else:
yield "<<\n/V (%s)\n/T (%s)\n%s\n%s\n>>\n" % (
smart_encode_str(value),
smart_encode_str(key),
handle_hidden(key, fields_hidden),
handle_readonly(key, fields_readonly),
)
def handle_data_names(fdf_data_names, fields_hidden, fields_readonly):
for (key, value) in fdf_data_names:
yield "<<\n/V /%s\n/T (%s)\n%s\n%s\n>>\n" % (
smart_encode_str(value),
smart_encode_str(key),
handle_hidden(key, fields_hidden),
handle_readonly(key, fields_readonly),
)
def forge_fdf(pdf_form_url="", fdf_data_strings=[], fdf_data_names=[], fields_hidden=[], fields_readonly=[]):
"""Generates fdf string from fields specified
pdf_form_url is just the url for the form fdf_data_strings and
fdf_data_names are arrays of (key,value) tuples for the form fields. FDF
just requires that string type fields be treated seperately from boolean
checkboxes, radio buttons etc. so strings go into fdf_data_strings, and
all the other fields go in fdf_data_names. fields_hidden is a list of
field names that should be hidden fields_readonly is a list of field names
that should be readonly
The result is a string suitable for writing to a .fdf file.
"""
fdf = ['%FDF-1.2\n%\xe2\xe3\xcf\xd3\r\n']
fdf.append("1 0 obj\n<<\n/FDF\n")
fdf.append("<<\n/Fields [\n")
fdf.append(''.join(handle_data_strings(fdf_data_strings, fields_hidden, fields_readonly)))
fdf.append(''.join(handle_data_names(fdf_data_names, fields_hidden, fields_readonly)))
fdf.append("]\n")
if pdf_form_url:
fdf.append("/F (" + smart_encode_str(pdf_form_url) + ")\n")
fdf.append(">>\n")
fdf.append(">>\nendobj\n")
fdf.append("trailer\n\n<<\n/Root 1 0 R\n>>\n")
fdf.append('%%EOF\n\x0a')
return ''.join(fdf)