Typora导出的PDF目录标题自动加编号
在Typora主题文件夹增加如下文件后，标题便自动加上了编号：
https://gitcode.net/as604049322/blog_data/-/blob/master/base.user.css
例如：
但是导出的PDF中，目录却没有编号：
这是我使用Python处理该文件，使其具有编号，完整代码如下：
python
# 博客地址：https://blog.csdn.net/as604049322
__author__ = '小小明-代码实体'
__date__ = '2023/8/31'
from PyPDF2 import PdfReader, PdfWriter
def get_pdf_Bookmark(filename):
"作者CSDN：https://blog.csdn.net/as604049322"
if isinstance(filename, str):
pdf_reader = PdfReader(filename)
else:
pdf_reader = filename
pagecount = len(pdf_reader.pages)
# 用保存每个标题id所对应的页码
idnum2pagenum = {}
for i in range(pagecount):
page = pdf_reader.pages[i]
idnum2pagenum[page.indirect_ref.idnum] = i
# 保存每个标题对应的标签数据，包括层级，标题和页码索引（页码-1）
bookmark = []
def get_pdf_Bookmark_inter(outlines, tab=0):
for outline in outlines:
if isinstance(outline, list):
get_pdf_Bookmark_inter(outline, tab + 1)
else:
bookmark.append(
(tab, outline['/Title'], idnum2pagenum[outline.page.idnum]))
get_pdf_Bookmark_inter(pdf_reader.outline)
return bookmark
def pdf_write_bookmark(bookmark, pdf_file, compress=True):
pdf_reader = PdfReader(pdf_file)
num_pages = len(pdf_reader.pages)
pdf_writer = PdfWriter()
for page in pdf_reader.pages:
if compress:
page.compress_content_streams()
pdf_writer.add_page(page)
# pdf_reader.
last_cache = [None] * (max(bookmark, key=lambda x: x[0])[0] + 1)
for tab, title, pagenum in bookmark:
if pagenum >= num_pages:
continue
parent = last_cache[tab - 1] if tab > 0 else None
indirect_id = pdf_writer.add_outline_item(title, pagenum, parent=parent)
last_cache[tab] = indirect_id
pdf_writer.page_mode = "/UseOutlines"
with open(pdf_file, "wb") as out:
pdf_writer.write(out)
print("已成功将书签写入到", pdf_file)
if __name__ == '__main__':
file = r"C:\Users\sj\Desktop\集团管理层培训.pdf"
bookmark = get_pdf_Bookmark(file)
num_cache = [0] * 7
last_tab = 0
new_bookmark = []
for tab, title, pagenum in bookmark:
if tab > last_tab:
num_cache[tab] = 1
else:
num_cache[tab] += 1
new_title = title
if not title[0].isdigit():
new_title = ".".join(map(str, num_cache[:tab + 1])) + " " + title
# print(tab, new_title, pagenum)
new_bookmark.append((tab, new_title, pagenum))
last_tab = tab
pdf_write_bookmark(new_bookmark, file)处理后的PDF目录就有编号了：
