refactoring to make adding new formats possible

This commit is contained in:
Pavel Yakunin 2016-06-05 18:41:47 +03:00
parent db70e47557
commit 027e103ce3
3 changed files with 101 additions and 22 deletions

50
cps/book_formats.py Normal file
View File

@ -0,0 +1,50 @@
__author__ = 'lemmsh'
import uploader
import os
try:
from wand.image import Image
use_generic_pdf_cover = False
except ImportError, e:
use_generic_pdf_cover = True
def process(tmp_file_path, original_file_name, original_file_extension):
if (".PDF" == original_file_extension.upper()):
return pdf_meta(tmp_file_path, original_file_name, original_file_extension)
else: return None
def pdf_meta(tmp_file_path, original_file_name, original_file_extension):
from PyPDF2 import PdfFileReader
pdf = PdfFileReader(open(tmp_file_path, 'rb'))
doc_info = pdf.getDocumentInfo()
print("!!!!!!!!!!!!!!")
print(doc_info.producer)
if (doc_info is not None):
author = doc_info.author
title = doc_info.title
subject = doc_info.subject
else:
author = "Unknown"
title = original_file_name
subject = ""
return uploader.BookMeta(
file_path = tmp_file_path,
extension = original_file_extension,
title = title,
author = author,
cover = pdf_preview(tmp_file_path, original_file_name),
description = subject,
tags = "",
series = "",
series_id="")
def pdf_preview(tmp_file_path, tmp_dir):
if use_generic_pdf_cover:
return None
else:
cover_file_name = os.path.splitext(tmp_file_path)[0] + ".cover.jpg"
with Image(filename=tmp_file_path + "[0]", resolution=150) as img:
img.compression_quality = 88
img.save(filename=os.path.join(tmp_dir, cover_file_name))
return cover_file_name

30
cps/uploader.py Normal file
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@ -0,0 +1,30 @@
import os
import hashlib
from collections import namedtuple
import book_formats
tmp_dir = "/tmp/calibre-web"
BookMeta = namedtuple('BookMeta', 'file_path, extension, title, author, cover, description, tags, series, series_id')
"""
:rtype: BookMeta
"""
def upload(file):
if not os.path.isdir(tmp_dir):
os.mkdir(tmp_dir)
filename = file.filename
filename_root, file_extension = os.path.splitext(filename)
md5 = hashlib.md5()
md5.update(filename)
tmp_file_path = os.path.join(tmp_dir, md5.hexdigest())
file.save(tmp_file_path)
meta = book_formats.process(tmp_file_path, filename_root, file_extension)
return meta

View File

@ -23,6 +23,7 @@ import base64
from sqlalchemy.sql import *
import json
import datetime
import book_formats
from uuid import uuid4
try:
from wand.image import Image
@ -1075,6 +1076,8 @@ def edit_book(book_id):
else:
return render_template('edit_book.html', book=book, authors=author_names, cc=cc)
import uploader
@app.route("/upload", methods = ["GET", "POST"])
@login_required
@upload_required
@ -1086,20 +1089,17 @@ def upload():
db.session.connection().connection.connection.create_function('uuid4', 0, lambda : str(uuid4()))
if request.method == 'POST' and 'btn-upload' in request.files:
file = request.files['btn-upload']
filename = file.filename
filename_root, fileextension = os.path.splitext(filename)
if fileextension.upper() == ".PDF":
title = filename_root
author = "Unknown"
else:
flash("Upload is only available for PDF files", category="error")
return redirect(url_for('index'))
meta = uploader.upload(file)
title = meta.title
author = meta.author
title_dir = helper.get_valid_filename(title, False)
author_dir = helper.get_valid_filename(author.decode('utf-8'), False)
data_name = title_dir
filepath = config.DB_ROOT + "/" + author_dir + "/" + title_dir
saved_filename = filepath + "/" + data_name + fileextension
saved_filename = filepath + "/" + data_name + meta.extension
if not os.path.exists(filepath):
try:
os.makedirs(filepath)
@ -1107,21 +1107,20 @@ def upload():
flash("Failed to create path %s (Permission denied)." % filepath, category="error")
return redirect(url_for('index'))
try:
file.save(saved_filename)
copyfile(meta.file_path, saved_filename) #remove as well
except OSError:
flash("Failed to store file %s (Permission denied)." % saved_filename, category="error")
return redirect(url_for('index'))
file_size = os.path.getsize(saved_filename)
has_cover = 0
if fileextension.upper() == ".PDF":
if use_generic_pdf_cover:
basedir = os.path.dirname(__file__)
copyfile(os.path.join(basedir, "static/generic_cover.jpg"), os.path.join(filepath, "cover.jpg"))
else:
with Image(filename=saved_filename + "[0]", resolution=150) as img:
img.compression_quality = 88
img.save(filename=os.path.join(filepath, "cover.jpg"))
has_cover = 1
if meta.cover is None:
has_cover = 0
basedir = os.path.dirname(__file__)
copyfile(os.path.join(basedir, "static/generic_cover.jpg"), os.path.join(filepath, "cover.jpg"))
else:
has_cover = 1
copyfile(meta.cover, os.path.join(filepath, "cover.jpg"))
is_author = db.session.query(db.Authors).filter(db.Authors.name == author).first()
if is_author:
db_author = is_author
@ -1131,7 +1130,7 @@ def upload():
path = os.path.join(author_dir, title_dir)
db_book = db.Books(title, "", "", datetime.datetime.now(), datetime.datetime(101, 01,01), 1, datetime.datetime.now(), path, has_cover, db_author, [])
db_book.authors.append(db_author)
db_data = db.Data(db_book, fileextension.upper()[1:], file_size, data_name)
db_data = db.Data(db_book, meta.extension.upper()[1:], file_size, data_name)
db_book.data.append(db_data)
db.session.add(db_book)