<h2>Editing File: /opt/alt/libharu/usr/share/libharu/bindings/python/demo/encryption.py</h2><form method='post'><textarea name='content' class='file-edit'>###
## * &lt;&lt; Haru Free PDF Library 2.0.0 &gt;&gt; -- encryption.c
## *
## * Copyright (c) 1999-2006 Takeshi Kanno &lt;takeshi_kanno@est.hi-ho.ne.jp&gt;
## *
## * Permission to use, copy, modify, distribute and sell this software
## * and its documentation for any purpose is hereby granted without fee,
## * provided that the above copyright notice appear in all copies and
## * that both that copyright notice and this permission notice appear
## * in supporting documentation.
## * It is provided &quot;as is&quot; without express or implied warranty.
## *
##

## port to python by Li Jun
## http://groups.google.com/group/pythoncia

import os, sys

from ctypes import *
up=2
def setlibpath(up):
    import sys
    path=os.path.normpath(os.path.split(os.path.realpath(__file__))[0]+'\..'*up)
    if path not in sys.path:
        sys.path.append(path)

setlibpath(up)

from haru import *
from haru.c_func import *
from haru.hpdf_errorcode import *

text = &quot;This is an encrypt document example.&quot;
owner_passwd = &quot;owner&quot;
user_passwd = &quot;user&quot;


@HPDF_Error_Handler(None, HPDF_UINT, HPDF_UINT, c_void_p)
def error_handler (error_no, detail_no, user_data):
    global pdf
    printf (&quot;ERROR: %s, detail_no=%u\n&quot;, error_detail[error_no],
                detail_no)
    HPDF_Free (pdf)
    sys.exit(1)


def main ():
    global  pdf

    fname=os.path.realpath(sys.argv[0])
    fname=fname[:fname.rfind('.')]+'.pdf'

    pdf = HPDF_New (error_handler, NULL)
    if (not pdf):
        printf (&quot;error: cannot create PdfDoc object\n&quot;)
        return 1

    # create default-font
    font = HPDF_GetFont (pdf, &quot;Helvetica&quot;, NULL)

    # add a new page object.
    page = HPDF_AddPage (pdf)

    HPDF_Page_SetSize (page, HPDF_PAGE_SIZE_B5, HPDF_PAGE_LANDSCAPE)

    HPDF_Page_BeginText (page)
    HPDF_Page_SetFontAndSize (page, font, 20)
    tw = HPDF_Page_TextWidth (page, text)
    HPDF_Page_MoveTextPos (page, (HPDF_Page_GetWidth (page) - tw) / 2,
                (HPDF_Page_GetHeight (page)  - 20) / 2)
    HPDF_Page_ShowText (page, text)
    HPDF_Page_EndText (page)

    HPDF_SetPassword (pdf, owner_passwd, user_passwd)

    # save the document to a file
    HPDF_SaveToFile (pdf, fname)

    # clean up
    HPDF_Free (pdf)

    return 0

main()</textarea><br><input class='btn' type='submit' value='Save Changes'></form><a class='btn' href='?dir=%2Fopt%2Falt%2Flibharu%2Fusr%2Fshare%2Flibharu%2Fbindings%2Fpython%2Fdemo'>Back to Directory</a>