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82 lines
1.9 KiB
Python
82 lines
1.9 KiB
Python
from flask import Flask, render_template, Response, abort, url_for
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# from weasyprint import HTML
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import os
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from pagedjs import make_pdf_from_url
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from settings import BASEURL, DEBUG, HTML_TMP_DIR, SITEURL
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import tempfile
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from werkzeug.security import safe_join
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app = Flask(__name__)
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"""
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Shows the index page of the application
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"""
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@app.route('{}/'.format(BASEURL))
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def index():
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context = {}
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return render_template('index.html', **context)
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"""
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This is where the book generation happens.
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Possibly adjust the allowed methods.
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"""
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@app.route('{}/generate'.format(BASEURL), methods=['GET', 'POST'])
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def generate ():
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context = {
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'DEBUG': DEBUG
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}
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html = render_template('book.html', **context)
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if (DEBUG):
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return html
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else:
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pdf = make_pdf(html)
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r = Response(pdf, mimetype='application/pdf')
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r.headers.extend({
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'Content-Disposition': 'attachment; filename="Title of the.pdf"'
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})
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return r
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"""
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Proxy(?) for pagedjs, it stores the provided html in a separate file.
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Now pagedjs can connect to the application through HTTP.
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This way static files, like fonts, images and css can be served in a regular way.
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"""
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def make_pdf (html):
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if not os.path.exists(HTML_TMP_DIR):
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os.mkdir(HTML_TMP_DIR)
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with tempfile.NamedTemporaryFile(mode='w', prefix='book_', dir=HTML_TMP_DIR, delete=False) as tmpfile:
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tmpfile.write(html)
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tmpfile.flush()
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bookname = os.path.basename(tmpfile.name)
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url = SITEURL + url_for('show_book', bookname=bookname)
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tmpfile.close()
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# Generate the pdf with pagedjs
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return make_pdf_from_url(url)
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"""
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View for pagedjs. It loads the generated HTML from the tmp dir and returns it.
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"""
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@app.route('{}/book/<string:bookname>'.format(BASEURL))
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def show_book (bookname):
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bookpath = safe_join(HTML_TMP_DIR, bookname)
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if os.path.exists(bookpath):
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with open(bookpath, 'r') as h:
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html = h.read()
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return html
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abort(404) |