From: Christian Heller Date: Thu, 14 Dec 2023 00:08:49 +0000 (+0100) Subject: Allow page ranges beyond input, pad output with blank pages. X-Git-Url: https://plomlompom.com/repos/%7B%7Bdb.prefix%7D%7D/%7B%7B%20web_path%20%7D%7D/decks/%7B%7Bdeck_id%7D%7D/%7B%7Bprefix%7D%7D/edit?a=commitdiff_plain;p=bookmaker Allow page ranges beyond input, pad output with blank pages. --- diff --git a/README.txt b/README.txt index 57fc9cf..f27bf84 100644 --- a/README.txt +++ b/README.txt @@ -79,4 +79,6 @@ FURTHER NOTES: For arguments like -p, page numbers are assumed to start with 1 (not 0, which is treated as an invalid page number value). +If -p defines a page range beyond the source document's last page, the remaining pages will be created blank. + The target page shape so far is assumed to be A4 in portrait orientation; bookmaker.py normalizes all pages to this format before applying crops, and removes any source PDF /Rotate commands (for their production of landscape orientations). diff --git a/bookmaker.py b/bookmaker.py index 2440747..bc26619 100755 --- a/bookmaker.py +++ b/bookmaker.py @@ -211,11 +211,12 @@ def read_inputs_to_pagelist(args_input_file, args_page_range): if args_page_range and len(args_page_range) > i: range_string = args_page_range[i] start_page, end_page = parse_page_range(range_string, reader.pages) - if end_page > len(reader.pages): # no need to test start_page cause start_page > end_page is checked above - raise HandledException(f"-p: page range goes beyond pages of input file: {range_string}") for old_page_num in range(start_page, end_page): new_page_num += 1 - page = reader.pages[old_page_num] + if old_page_num >= len(reader.pages): + page = pypdf.PageObject.create_blank_page(width=A4_WIDTH, height=A4_HEIGHT) + else: + page = reader.pages[old_page_num] pages_to_add += [page] print(f"-i, -p: read in {input_file} page number {old_page_num+1} as new page {new_page_num}") return pages_to_add, opened_files