From 274aa2d29f1af7d7209b888efe7cf3214a0903ac Mon Sep 17 00:00:00 2001
From: Rongxin Liu <rongxinliu.dev@gmail.com>
Date: Wed, 28 Dec 2022 13:08:17 -0500
Subject: [PATCH 1/3] use PdfReader and PdfMerger

---
 render50 | 10 +++++-----
 setup.py |  2 +-
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/render50 b/render50
index bf41b03..4879b2c 100755
--- a/render50
+++ b/render50
@@ -23,7 +23,7 @@ from pygments.formatters import HtmlFormatter
 from pygments.lexers import get_lexer_for_filename, guess_lexer
 from pygments.lexers.special import TextLexer
 from pygments.styles import get_all_styles
-from PyPDF2 import PdfFileMerger, PdfFileReader, PdfFileWriter
+from PyPDF2 import PdfMerger, PdfReader, PdfFileWriter
 from requests.exceptions import RequestException
 from tempfile import mkstemp
 from textwrap import fill
@@ -335,13 +335,13 @@ def concatenate(output, inputs):
     """Concatenate (PDF) inputs side by side."""
 
     # Read files
-    readers = list(map(PdfFileReader, inputs))
+    readers = list(map(PdfReader, inputs))
 
     # Render blank page, inferring size from first input's first page
     temp = mkstemp()
     size = "{}pt {}pt".format(readers[0].getPage(0).mediaBox[2], readers[0].getPage(0).mediaBox[3])
     write(temp[1], [blank(size)], False)
-    page = PdfFileReader(temp[1]).getPage(0)
+    page = PdfReader(temp[1]).getPage(0)
 
     # Concatenate files side by side
     writer = PdfFileWriter()
@@ -551,9 +551,9 @@ def write(output, documents, echo=True):
     https://doc.courtbouillon.org/weasyprint/stable/api_reference.html#weasyprint.HTML.write_pdf
     """
     if documents:
-        merger = PdfFileMerger()
+        merger = PdfMerger()
         for document in documents:
-            merger.append(PdfFileReader(io.BytesIO(document.write_pdf())))
+            merger.append(PdfReader(io.BytesIO(document.write_pdf())))
         merger.write(output)
         if echo:
             cprint("Rendered {}.".format(output), "green")
diff --git a/setup.py b/setup.py
index e6ef36c..1e051e5 100644
--- a/setup.py
+++ b/setup.py
@@ -18,5 +18,5 @@
     python_requires=">=3.6",
     scripts=["render50"],
     url="https://github.com/cs50/render50",
-    version="9.0.2"
+    version="9.0.3"
 )

From f6f252cf5de72454aaa0fd6b545282f4372be173 Mon Sep 17 00:00:00 2001
From: Rongxin Liu <rongxinliu.dev@gmail.com>
Date: Wed, 28 Dec 2022 13:12:34 -0500
Subject: [PATCH 2/3] updated setup-python action versions

---
 .github/workflows/main.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index f02cb71..a8b2527 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -4,9 +4,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
-    - uses: actions/setup-python@v3
+    - uses: actions/setup-python@v4
       with:
-        python-version: '3.6'
+        python-version: '3.10'
 
     - name: Run tests
       run: |

From c021f7c2b36814b42ae1ee95f680ce17af7200a6 Mon Sep 17 00:00:00 2001
From: Rongxin Liu <rongxinliu.dev@gmail.com>
Date: Wed, 28 Dec 2022 13:37:13 -0500
Subject: [PATCH 3/3] use alternative method for PDFs merging

---
 render50 | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/render50 b/render50
index 4879b2c..1e5416f 100755
--- a/render50
+++ b/render50
@@ -23,7 +23,7 @@ from pygments.formatters import HtmlFormatter
 from pygments.lexers import get_lexer_for_filename, guess_lexer
 from pygments.lexers.special import TextLexer
 from pygments.styles import get_all_styles
-from PyPDF2 import PdfMerger, PdfReader, PdfFileWriter
+from PyPDF2 import PdfReader, PdfFileWriter
 from requests.exceptions import RequestException
 from tempfile import mkstemp
 from textwrap import fill
@@ -548,13 +548,13 @@ def render(filename, size, align="right", browser=False, fontSize="10pt", margin
 def write(output, documents, echo=True):
     """
     Write documents to output as PDF.
-    https://doc.courtbouillon.org/weasyprint/stable/api_reference.html#weasyprint.HTML.write_pdf
+    https://github.com/Kozea/WeasyPrint/issues/212#issuecomment-52408306
+    https://github.com/Kozea/WeasyPrint/issues/1662#issuecomment-1226058917
     """
     if documents:
-        merger = PdfMerger()
-        for document in documents:
-            merger.append(PdfReader(io.BytesIO(document.write_pdf())))
-        merger.write(output)
+        pages = [page for document in documents for page in document.pages]
+        documents[0].copy(pages).write_pdf(output)
+
         if echo:
             cprint("Rendered {}.".format(output), "green")
         return True