From f2bfdf5336b6ac8e3199ea6e42031afe03ffcc66 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fran=C3=A7ois=20Boulogne?= <fboulogne sciunto org>
Date: Sat, 12 Jul 2014 23:00:59 -0400
Subject: [PATCH] I, F. Boulogne, as the author, relicense this code.

---
 libbmc/tearpages.py | 57 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100755 libbmc/tearpages.py

diff --git a/libbmc/tearpages.py b/libbmc/tearpages.py
new file mode 100755
index 0000000..c21989f
--- /dev/null
+++ b/libbmc/tearpages.py
@@ -0,0 +1,57 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# Author: Francois Boulogne
+
+import shutil
+import tempfile
+from PyPDF2 import PdfFileWriter, PdfFileReader
+from PyPDF2.utils import PdfReadError
+
+
+def _fixPdf(pdfFile, destination):
+    """
+    Fix malformed pdf files when data are present after '%%EOF'
+
+    :param pdfFile: PDF filepath
+    :param destination: destination
+    """
+    tmp = tempfile.NamedTemporaryFile()
+    output = open(tmp.name, 'wb')
+    with open(pdfFile, "rb") as fh:
+        with open(pdfFile, "rb") as fh:
+            for line in fh:
+                output.write(line)
+                if b'%%EOF' in line:
+                    break
+    output.close()
+    shutil.copy(tmp.name, destination)
+
+
+def tearpage(filename, startpage=1):
+    """
+    Copy filename to a tempfile, write pages startpage..N to filename.
+
+    :param filename: PDF filepath
+    :param startpage: page number for the new first page
+    """
+    # Copy the pdf to a tmp file
+    tmp = tempfile.NamedTemporaryFile()
+    shutil.copy(filename, tmp.name)
+
+    # Read the copied pdf
+    try:
+        input_file = PdfFileReader(open(tmp.name, 'rb'))
+    except PdfReadError:
+        _fixPdf(filename, tmp.name)
+        input_file = PdfFileReader(open(tmp.name, 'rb'))
+    # Seek for the number of pages
+    num_pages = input_file.getNumPages()
+
+    # Write pages excepted the first one
+    output_file = PdfFileWriter()
+    for i in range(startpage, num_pages):
+        output_file.addPage(input_file.getPage(i))
+
+    tmp.close()
+    outputStream = open(filename, "wb")
+    output_file.write(outputStream)