Start writing html generation
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import urllib.parse
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import bs4
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# generate_nav(*, soup) → nav_tag
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def generate_nav(*, soup):
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# TODO: Don't generate link to a board if we're at the index
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nav_tag = soup.new_tag('nav')
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for board in ['a', 'b', 'his', 'g']:
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url = '/' + urllib.parse.quote(board, safe = '') + '/'
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a_tag = soup.new_tag('a', href = url)
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a_tag.string = '/' + board + '/'
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nav_tag.append(a_tag)
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return nav_tag
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# generate_header(*, page_title, soup) → header_tag
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def generate_header(*, page_title, soup):
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header_tag = soup.new_tag('header')
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h1_tag = soup.new_tag('h1')
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h1_tag.string = page_title
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header_tag.append(h1_tag)
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return header_tag
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# generate_footer(*, soup) → footer_tag
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def generate_footer(*, soup):
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# TODO: Add footer generation
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return soup.new_tag('footer')
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# page_skeleton(*, page_title, contents, soup) → html
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# Given page title (string) and contents (iteratable of beautifulsoup tags), create the html
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# Since most pages have same basic structure, it makes sense to factor this out from page creation functions
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def page_skeleton(*, page_title, contents, soup):
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# Doctype and head are more or less the same for each page, no need to do anything fancy when adding them
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soup.append(bs4.Doctype('html'))
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head_tag = soup.new_tag('head')
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title_tag = soup.new_tag('title')
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title_tag.string = page_title
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head_tag.append(title_tag)
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soup.append(head_tag)
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# Body consists of (more or less same) header and footer, and varying content
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body_tag = soup.new_tag('body')
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body_tag.append(generate_nav(soup = soup))
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body_tag.append(generate_header(page_title = page_title, soup = soup))
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# contents is an iterable that can contain several tags
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for tag in contents:
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body_tag.append(tag)
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body_tag.append(generate_footer(soup = soup))
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soup.append(body_tag)
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# Use .prettify() to generate nice-looking HTML
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# We are probably never going to serve enough pages for the additional whitespace to count for data usage
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return soup.prettify()
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# new_soup() → soup
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# Since we need a soup object to create tags, split this from page_skeleton
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def new_soup():
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# Use python's built-in parser for portability
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# We'll be constructing the document programmatically, so start with empty tree
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soup = bs4.BeautifulSoup('', 'html.parser')
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return soup
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# board() → html
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# Creates the board index page
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def board(board_name):
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# TODO: Creae a board index page
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soup = new_soup()
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page_title = '/' + board_name + '/'
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return page_skeleton(page_title = page_title, contents = [], soup = soup)
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# index() → html
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# Create the site index
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def index():
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# TODO: Create an index page
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soup = new_soup()
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return page_skeleton(page_title = 'Buranun', contents = [], soup = soup)
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# error_404(path) → html
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def error_404(path):
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soup = new_soup()
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p_tag = soup.new_tag('p')
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p_tag.string = path + ' does not exist'
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return page_skeleton(page_title = '404 Not Found', contents = [p_tag], soup = soup)
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35
server.py
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server.py
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import http.server
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import urllib.parse
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import generate_html
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class HTTPRequestHandler(http.server.BaseHTTPRequestHandler):
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server_version = 'Buranun/0.0'
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protocol_version = 'HTTP/1.1'
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def __send_plaintext(self, string):
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if string[-1:] != '\n':
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string += '\n'
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encoded = string.encode('utf-8')
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def __send_html(self, html, *, status_code = 200):
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encoded = html.encode('utf-8')
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length = len(encoded)
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self.send_response(200)
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self.send_header('Content-Type', 'text/plain; charset=utf-8')
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self.send_response(status_code)
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self.send_header('Content-Type', 'text/html; charset=utf-8')
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self.send_header('Content-Length', length)
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self.end_headers()
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self.wfile.write(encoded)
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def __send_404(self, path):
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html = generate_html.error_404(path)
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self.__send_html(html, status_code = 404)
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def do_GET(self):
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path = urllib.parse.unquote(self.path)
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self.__send_plaintext(path)
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path_components = [component for component in path.split('/') if component != '']
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if len(path_components) == 0:
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# Path of format / → index
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html = generate_html.index()
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self.__send_html(html)
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elif len(path_components) == 1:
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# Path of format /foo/ → board index
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board_name = path_components[0]
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html = generate_html.board(board_name)
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self.__send_html(html)
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else:
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# Path not understood, send 404
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self.__send_404(path)
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def main():
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httpd = http.server.HTTPServer(('', 8000), HTTPRequestHandler)
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