#!/usr/bin/env python
#coding: utf8
# blitiri - A single-file blog engine.
# Alberto Bertogli (albertito@gmail.com)
#
# Configuration section
#
# You can edit these values, or create a file named "config.py" and put them
# there to make updating easier. The ones in config.py take precedence.
#
# Directory where entries are stored
data_path = "/tmp/blog/data"
# Are comments allowed? (if False, comments_path option is not used)
enable_comments = False
# Directory where comments are stored (must be writeable by the web server)
comments_path = "/tmp/blog/comments"
# Path where templates are stored. Use an empty string for the built-in
# default templates. If they're not found, the built-in ones will be used.
templates_path = "/tmp/blog/templates"
# Path where the cache is stored (must be writeable by the web server);
# set to None to disable. When enabled, you must take care of cleaning it up
# every once in a while.
#cache_path = "/tmp/blog/cache"
cache_path = None
# URL to the blog, including the name. Can be a full URL or just the path.
blog_url = "/blog/blitiri.cgi"
# Style sheet (CSS) URL. Can be relative or absolute. To use the built-in
# default, set it to blog_url + "/style".
css_url = blog_url + "/style"
# Blog title
title = "I don't like blogs"
# Default author
author = "Hartmut Kegan"
# Article encoding
encoding = "utf8"
# Captcha method to use. At the moment only "title" is supported, but if you
# are keen with Python you can provide your own captcha implementation, see
# below for details.
captcha_method = "title"
#
# End of configuration
# DO *NOT* EDIT ANYTHING PAST HERE
#
import sys
import os
import errno
import shutil
import time
import datetime
import calendar
import zlib
import urllib
import cgi
from docutils.core import publish_parts
from docutils.utils import SystemMessage
# Before importing the config, add our cwd to the Python path
sys.path.append(os.getcwd())
# Load the config file, if there is one
try:
from config import *
except:
pass
# Pimp *_path config variables to support relative paths
data_path = os.path.realpath(data_path)
templates_path = os.path.realpath(templates_path)
#
# Captcha classes
#
# They must follow the interface described below.
#
# Constructor:
# Captcha(article) -> constructor, takes an article[1] as argument
# Attributes:
# puzzle -> a string with the puzzle the user must solve to prove he is
# not a bot (can be raw HTML)
# help -> a string with extra instructions, shown only when the user
# failed to solve the puzzle
# Methods:
# validate(form_data) -> based on the form data[2], returns True if
# the user has solved the puzzle uccessfully
# (False otherwise).
#
# Note you must ensure that the puzzle attribute and validate() method can
# "communicate" because they are executed in different requests. You can pass a
# cookie or just calculate the answer based on the article's data, for example.
#
# [1] article is an object with all the article's information:
# path -> string
# created -> datetime
# updated -> datetime
# uuid -> string (unique ID)
# title -> string
# author -> string
# tags -> list of strings
# raw_contents -> string in rst format
# comments -> list of Comment objects (not too relevant here)
# [2] form_data is an object with the form fields (all strings):
# author, author_error
# link, link_error
# catpcha, captcha_error
# body, body_error
# action, method
class TitleCaptcha (object):
"Captcha that uses the article's title for the puzzle"
def __init__(self, article):
self.article = article
words = article.title.split()
self.nword = hash(article.title) % len(words) % 5
self.answer = words[self.nword]
self.help = 'gotcha, damn spam bot!'
@property
def puzzle(self):
nword = self.nword + 1
if nword == 1:
n = '1st'
elif nword == 2:
n = '2nd'
elif nword == 3:
n = '3rd'
else:
n = str(nword) + 'th'
return "enter the %s word of the article's title" % n
def validate(self, form_data):
if form_data.captcha.lower() == self.answer.lower():
return True
return False
known_captcha_methods = {
'title': TitleCaptcha,
}
# If the configured captcha method was a known string, replace it by the
# matching class; otherwise assume it's already a class and leave it
# alone. This way the user can either use one of our methods, or provide one
# of his/her own.
if captcha_method in known_captcha_methods:
captcha_method = known_captcha_methods[captcha_method]
# Default template
default_main_header = """\
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<link rel="alternate" title="%(title)s" href="%(fullurl)s/atom"
type="application/atom+xml" />
<link href="%(css_url)s" rel="stylesheet" type="text/css" />
<title>%(title)s</title>
</head>
<body>
<h1><a href="%(url)s">%(title)s</a></h1>
<div class="content">
"""
default_main_footer = """
</div>
<div class="footer">
%(showyear)s: %(monthlinks)s<br/>
years: %(yearlinks)s<br/>
subscribe: <a href="%(url)s/atom">atom</a><br/>
views: <a href="%(url)s/">blog</a> <a href="%(url)s/list">list</a><br/>
</div>
</body>
</html>
"""
default_article_header = """
<div class="article">
<h2><a href="%(url)s/post/%(uuid)s">%(arttitle)s</a></h2>
<span class="artinfo">
by %(author)s on <span class="date">
<a class="date" href="%(url)s/%(cyear)d/">%(cyear)04d</a>-\
<a class="date" href="%(url)s/%(cyear)d/%(cmonth)d/">%(cmonth)02d</a>-\
<a class="date" href="%(url)s/%(cyear)d/%(cmonth)d/%(cday)d/">%(cday)02d</a>\
%(chour)02d:%(cminute)02d</span>
(updated on <span class="date">
<a class="date" href="%(url)s/%(uyear)d/">%(uyear)04d</a>-\
<a class="date" href="%(url)s/%(uyear)d/%(umonth)d/">%(umonth)02d</a>-\
<a class="date" href="%(url)s/%(uyear)d/%(umonth)d/%(uday)d/">%(uday)02d</a>\
%(uhour)02d:%(uminute)02d)</span><br/>
<span class="tags">tagged %(tags)s</span> -
<span class="comments">with %(comments)s
<a href="%(url)s/post/%(uuid)s#comments">comment(s)</a></span>
</span><br/>
<p/>
<div class="artbody">
"""
default_article_footer = """
<p/>
</div>
</div>
"""
default_comment_header = """
<div class="comment">
<a name="comment-%(number)d" />
<h3><a href="#comment-%(number)d">Comment #%(number)d</a></h3>
<span class="cominfo">by %(linked_author)s
on %(year)04d-%(month)02d-%(day)02d %(hour)02d:%(minute)02d</span>
<p/>
<div class="combody">
"""
default_comment_footer = """
<p/>
</div>
</div>
"""
default_comment_form = """
<div class="comform">
<a name="comment" />
<h3 class="comform"><a href="#comment">Your comment</a></h3>
<div class="comforminner">
<form method="%(form_method)s" action="%(form_action)s">
<div class="comformauthor">
<label for="comformauthor">Your name %(form_author_error)s</label>
<input type="text" class="comformauthor" id="comformauthor"
name="comformauthor" value="%(form_author)s" />
</div>
<div class="comformlink">
<label for="comformlink">Your link
<span class="comformoptional">(optional, will be published)</span>
%(form_link_error)s</label>
<input type="text" class="comformlink" id="comformlink"
name="comformlink" value="%(form_link)s" />
<div class="comformhelp">
like <span class="formurlexample">http://www.example.com/</span>
or <span class="formurlexample">mailto:you@example.com</span>
</div>
</div>
<div class="comformcaptcha">
<label for="comformcaptcha">Your humanity proof %(form_captcha_error)s</label>
<input type="text" class="comformcaptcha" id="comformcaptcha"
name="comformcaptcha" value="%(form_captcha)s" />
<div class="comformhelp">%(captcha_puzzle)s</div>
</div>
<div class="comformbody">
<label for="comformbody" class="comformbody">The comment
%(form_body_error)s</label>
<textarea class="comformbody" id="comformbody" name="comformbody" rows="15"
cols="80">%(form_body)s</textarea>
<div class="comformhelp">
in
<a href="http://docutils.sourceforge.net/docs/user/rst/quickref.html">\
RestructuredText</a> format, please
</div>
</div>
<div class="comformsend">
<button type="submit" class="comformsend" id="comformsend" name="comformsend">
Send comment
</button>
</div>
</form>
</div>
</div>
"""
default_comment_error = '<span class="comformerror">(%(error)s)</span>'
# Default CSS
default_css = """
body {
font-family: sans-serif;
font-size: small;
width: 52em;
}
div.content {
width: 96%;
}
h1 {
font-size: large;
border-bottom: 2px solid #99F;
width: 100%;
margin-bottom: 1em;
}
h2 {
font-size: medium;
font-weigth: none;
margin-bottom: 1pt;
border-bottom: 1px solid #99C;
}
h3 {
font-size: small;
font-weigth: none;
margin-bottom: 1pt;
border-bottom: 1px solid #99C;
}
h1 a, h2 a, h3 a {
text-decoration: none;
color: black;
}
span.artinfo {
font-size: xx-small;
}
span.artinfo a {
text-decoration: none;
color: #339;
}
span.artinfo a:hover {
text-decoration: none;
color: blue;
}
div.artbody {
margin-left: 1em;
}
div.article {
margin-bottom: 2em;
}
span.cominfo {
font-size: xx-small;
}
span.cominfo a {
text-decoration: none;
color: #339;
}
span.cominfo a:hover {
text-decoration: none;
color: blue;
}
div.combody {
margin-left: 2em;
}
div.comment {
margin-left: 1em;
margin-bottom: 1em;
}
div.comforminner {
margin-left: 2em;
}
div.comform {
margin-left: 1em;
margin-bottom: 1em;
}
div.comform label {
display: block;
border-bottom: 1px solid #99C;
margin-top: 0.5em;
clear: both;
}
div.comform span.comformoptional {
font-size: xx-small;
color: #666;
}
div.comform input {
font-size: small;
width: 99%;
}
div.comformhelp {
font-size: xx-small;
text-align: right;
float: right;
}
span.formurlexample {
color: #111;
background-color: #EEF;
font-family: monospace;
padding-left: 0.2em;
padding-right: 0.2em;
}
textarea.comformbody {
font-family: monospace;
font-size: small;
width: 99%;
height: 15em;
}
button.comformsend {
margin-top: 0.5em;
}
span.comformerror {
color: #900;
font-size: xx-small;
margin-left: 0.5em;
}
hr {
float: left;
height: 2px;
border: 0;
background-color: #99F;
width: 60%;
}
div.footer {
margin-top: 1em;
padding-top: 0.4em;
width: 100%;
border-top: 2px solid #99F;
font-size: x-small;
}
div.footer a {
text-decoration: none;
}
/* Articles are enclosed in <div class="section"> */
div.section h1 {
font-size: small;
font-weigth: none;
width: 100%;
margin-bottom: 1pt;
border-bottom: 1px dotted #99C;
}
"""
# Cache decorator
# It only works if the function is pure (that is, its return value depends
# only on its arguments), and if all the arguments are hash()eable.
def cached(f):
# do not decorate if the cache is disabled
if cache_path is None:
return f
def decorate(*args, **kwargs):
hashes = '-'.join( str(hash(x)) for x in args +
tuple(kwargs.items()) )
fname = 'blitiri.%s.%s.cache' % (f.__name__, hashes)
cache_file = os.path.join(cache_path, fname)
try:
s = open(cache_file).read()
except:
s = f(*args, **kwargs)
open(cache_file, 'w').write(s)
return s
return decorate
# helper functions
@cached
def rst_to_html(rst, secure = True):
settings = {
'input_encoding': encoding,
'output_encoding': 'utf8',
'halt_level': 1,
'traceback': 1,
'file_insertion_enabled': secure,
'raw_enabled': secure,
}
parts = publish_parts(rst, settings_overrides = settings,
writer_name = "html")
return parts['body'].encode('utf8')
def validate_rst(rst, secure = True):
try:
rst_to_html(rst, secure)
return None
except SystemMessage, e:
desc = e.args[0].encode('utf-8') # the error string
desc = desc[9:] # remove "<string>:"
line = int(desc[:desc.find(':')] or 0) # get the line number
desc = desc[desc.find(')')+2:-1] # remove (LEVEL/N)
try:
desc, context = desc.split('\n', 1)
except ValueError:
context = ''
if desc.endswith('.'):
desc = desc[:-1]
return (line, desc, context)
def valid_link(link):
import re
scheme_re = r'^[a-zA-Z]+:'
mail_re = r"^[^ \t\n\r@<>()]+@[a-z0-9][a-z0-9\.\-_]*\.[a-z]+$"
url_re = r'^(?:[a-z0-9\-]+|[a-z0-9][a-z0-9\-\.\_]*\.[a-z]+)' \
r'(?::[0-9]+)?(?:/.*)?$'
if re.match(scheme_re, link, re.I):
scheme, rest = link.split(':', 1)
# if we have an scheme and a rest, assume the link is valid
# and return it as-is; otherwise (having just the scheme) is
# invalid
if rest:
return link
return None
# at this point, we don't have a scheme; we will try to recognize some
# common addresses (mail and http at the moment) and complete them to
# form a valid link, if we fail we will just claim it's invalid
if re.match(mail_re, link, re.I):
return 'mailto:' + link
elif re.match(url_re, link, re.I):
return 'http://' + link
return None
def sanitize(obj):
return cgi.escape(obj, quote = True)
# find out our URL, needed for syndication
try:
n = os.environ['SERVER_NAME']
p = os.environ['SERVER_PORT']
s = os.environ['SCRIPT_NAME']
if p == '80': p = ''
else: p = ':' + p
full_url = 'http://%s%s%s' % (n, p, s)
except KeyError:
full_url = 'Not needed'
class Templates (object):
def __init__(self, tpath, db, showyear = None):
self.tpath = tpath
self.db = db
now = datetime.datetime.now()
if not showyear:
showyear = now.year
self.vars = {
'css_url': css_url,
'title': title,
'url': blog_url,
'fullurl': full_url,
'year': now.year,
'month': now.month,
'day': now.day,
'showyear': showyear,
'monthlinks': ' '.join(db.get_month_links(showyear)),
'yearlinks': ' '.join(db.get_year_links()),
}
def get_template(self, page_name, default_template, extra_vars = None):
if extra_vars is None:
vars = self.vars
else:
vars = self.vars.copy()
vars.update(extra_vars)
p = '%s/%s.html' % (self.tpath, page_name)
if os.path.isfile(p):
return open(p).read() % vars
return default_template % vars
def get_main_header(self):
return self.get_template('header', default_main_header)
def get_main_footer(self):
return self.get_template('footer', default_main_footer)
def get_article_header(self, article):
return self.get_template(
'art_header', default_article_header, article.to_vars())
def get_article_footer(self, article):
return self.get_template(
'art_footer', default_article_footer, article.to_vars())
def get_comment_header(self, comment):
vars = comment.to_vars()
if comment.link:
vars['linked_author'] = '<a href="%s">%s</a>' \
% (vars['link'], vars['author'])
else:
vars['linked_author'] = vars['author']
return self.get_template(
'com_header', default_comment_header, vars)
def get_comment_footer(self, comment):
return self.get_template(
'com_footer', default_comment_footer, comment.to_vars())
def get_comment_form(self, article, form_data, captcha_puzzle):
vars = article.to_vars()
vars.update(form_data.to_vars(self))
vars['captcha_puzzle'] = captcha_puzzle
return self.get_template(
'com_form', default_comment_form, vars)
def get_comment_error(self, error):
return self.get_template(
'com_error', default_comment_error, dict(error=error))
class CommentFormData (object):
def __init__(self, author = '', link = '', captcha = '', body = ''):
self.author = author
self.link = link
self.captcha = captcha
self.body = body
self.author_error = ''
self.link_error = ''
self.captcha_error = ''
self.body_error = ''
self.action = ''
self.method = 'post'
def to_vars(self, template):
render_error = template.get_comment_error
a_error = self.author_error and render_error(self.author_error)
l_error = self.link_error and render_error(self.link_error)
c_error = self.captcha_error \
and render_error(self.captcha_error)
b_error = self.body_error and render_error(self.body_error)
return {
'form_author': sanitize(self.author),
'form_link': sanitize(self.link),
'form_captcha': sanitize(self.captcha),
'form_body': sanitize(self.body),
'form_author_error': a_error,
'form_link_error': l_error,
'form_captcha_error': c_error,
'form_body_error': b_error,
'form_action': self.action,
'form_method': self.method,
}
class Comment (object):
def __init__(self, article, number, created = None):
self.article = article
self.number = number
if created is None:
self.created = datetime.datetime.now()
else:
self.created = created
self.loaded = False
# loaded on demand
self._author = author
self._link = ''
self._raw_content = 'Removed comment'
@property
def author(self):
if not self.loaded:
self.load()
return self._author
@property
def link(self):
if not self.loaded:
self.load()
return self._link
@property
def raw_content(self):
if not self.loaded:
self.load()
return self._raw_content
def set(self, author, raw_content, link = '', created = None):
self.loaded = True
self._author = author
self._raw_content = raw_content
self._link = link
self.created = created or datetime.datetime.now()
def load(self):
filename = os.path.join(comments_path, self.article.uuid,
str(self.number))
try:
raw = open(filename).readlines()
except:
return
count = 0
for l in raw:
if ':' in l:
name, value = l.split(':', 1)
if name.lower() == 'author':
self._author = value.strip()
elif name.lower() == 'link':
self._link = value.strip()
elif l == '\n':
# end of header
break
count += 1
self._raw_content = ''.join(raw[count + 1:])
self.loaded = True
def save(self):
filename = os.path.join(comments_path, self.article.uuid,
str(self.number))
try:
f = open(filename, 'w')
f.write('Author: %s\n' % self.author)
f.write('Link: %s\n' % self.link)
f.write('\n')
f.write(self.raw_content)
except:
return
def to_html(self):
return rst_to_html(self.raw_content)
def to_vars(self):
return {
'number': self.number,
'author': sanitize(self.author),
'link': sanitize(self.link),
'date': self.created.isoformat(' '),
'created': self.created.isoformat(' '),
'year': self.created.year,
'month': self.created.month,
'day': self.created.day,
'hour': self.created.hour,
'minute': self.created.minute,
'second': self.created.second,
}
class CommentDB (object):
def __init__(self, article):
self.path = os.path.join(comments_path, article.uuid)
# if comments were enabled after the article was added, we
# will need to create the directory
if not os.path.exists(self.path):
os.mkdir(self.path, 0755)
self.comments = []
self.load(article)
def load(self, article):
try:
f = open(os.path.join(self.path, 'db'))
except:
return
for l in f:
# Each line has the following comma separated format:
# number, created (epoch)
# Empty lines are meaningful and represent removed
# comments (so we can preserve the comment number)
l = l.split(',')
try:
n = int(l[0])
d = datetime.datetime.fromtimestamp(float(l[1]))
except:
# Removed/invalid comment
self.comments.append(None)
continue
self.comments.append(Comment(article, n, d))
def save(self):
old_db = os.path.join(self.path, 'db')
new_db = os.path.join(self.path, 'db.tmp')
f = open(new_db, 'w')
for c in self.comments:
s = ''
if c is not None:
s = ''
s += str(c.number) + ', '
s += str(time.mktime(c.created.timetuple()))
s += '\n'
f.write(s)
f.close()
os.rename(new_db, old_db)
class Article (object):
def __init__(self, path, created = None, updated = None):
self.path = path
self.created = created
self.updated = updated
self.uuid = "%08x" % zlib.crc32(self.path)
self.loaded = False
# loaded on demand
self._title = 'Removed post'
self._author = author
self._tags = []
self._raw_content = ''
self._comments = []
@property
def title(self):
if not self.loaded:
self.load()
return self._title
@property
def author(self):
if not self.loaded:
self.load()
return self._author
@property
def tags(self):
if not self.loaded:
self.load()
return self._tags
@property
def raw_content(self):
if not self.loaded:
self.load()
return self._raw_content
@property
def comments(self):
if not self.loaded:
self.load()
return self._comments
def __cmp__(self, other):
if self.path == other.path:
return 0
if not self.created:
return 1
if not other.created:
return -1
if self.created < other.created:
return -1
return 1
def title_cmp(self, other):
return cmp(self.title, other.title)
def add_comment(self, author, raw_content, link = ''):
c = Comment(self, len(self.comments))
c.set(author, raw_content, link)
self.comments.append(c)
return c
def load(self):
# XXX this tweak is only needed for old DB format, where
# article's paths started with a slash
path = self.path
if path.startswith('/'):
path = path[1:]
filename = os.path.join(data_path, path)
try:
raw = open(filename).readlines()
except:
return
count = 0
for l in raw:
if ':' in l:
name, value = l.split(':', 1)
if name.lower() == 'title':
self._title = value.strip()
elif name.lower() == 'author':
self._author = value.strip()
elif name.lower() == 'tags':
ts = value.split(',')
ts = [t.strip() for t in ts]
self._tags = set(ts)
elif l == '\n':
# end of header
break
count += 1
self._raw_content = ''.join(raw[count + 1:])
db = CommentDB(self)
self._comments = db.comments
self.loaded = True
def to_html(self):
return rst_to_html(self.raw_content)
def to_vars(self):
return {
'arttitle': sanitize(self.title),
'author': sanitize(self.author),
'date': self.created.isoformat(' '),
'uuid': self.uuid,
'tags': self.get_tags_links(),
'comments': len(self.comments),
'created': self.created.isoformat(' '),
'ciso': self.created.isoformat(),
'cyear': self.created.year,
'cmonth': self.created.month,
'cday': self.created.day,
'chour': self.created.hour,
'cminute': self.created.minute,
'csecond': self.created.second,
'updated': self.updated.isoformat(' '),
'uiso': self.updated.isoformat(),
'uyear': self.updated.year,
'umonth': self.updated.month,
'uday': self.updated.day,
'uhour': self.updated.hour,
'uminute': self.updated.minute,
'usecond': self.updated.second,
}
def get_tags_links(self):
l = []
tags = list(self.tags)
tags.sort()
for t in tags:
l.append('<a class="tag" href="%s/tag/%s">%s</a>' % \
(blog_url, urllib.quote(t), sanitize(t) ))
return ', '.join(l)
class ArticleDB (object):
def __init__(self, dbpath):
self.dbpath = dbpath
self.articles = []
self.uuids = {}
self.actyears = set()
self.actmonths = set()
self.load()
def get_articles(self, year = 0, month = 0, day = 0, tags = None):
l = []
for a in self.articles:
if year and a.created.year != year: continue
if month and a.created.month != month: continue
if day and a.created.day != day: continue
if tags and not tags.issubset(a.tags): continue
l.append(a)
return l
def get_article(self, uuid):
return self.uuids[uuid]
def load(self):
try:
f = open(self.dbpath)
except:
return
for l in f:
# Each line has the following comma separated format:
# path (relative to data_path), \
# created (epoch), \
# updated (epoch)
try:
l = l.split(',')
except:
continue
a = Article(l[0],
datetime.datetime.fromtimestamp(float(l[1])),
datetime.datetime.fromtimestamp(float(l[2])))
self.uuids[a.uuid] = a
self.actyears.add(a.created.year)
self.actmonths.add((a.created.year, a.created.month))
self.articles.append(a)
def save(self):
f = open(self.dbpath + '.tmp', 'w')
for a in self.articles:
s = ''
s += a.path + ', '
s += str(time.mktime(a.created.timetuple())) + ', '
s += str(time.mktime(a.updated.timetuple())) + '\n'
f.write(s)
f.close()
os.rename(self.dbpath + '.tmp', self.dbpath)
def get_year_links(self):
yl = list(self.actyears)
yl.sort(reverse = True)
return [ '<a href="%s/%d/">%d</a>' % (blog_url, y, y)
for y in yl ]
def get_month_links(self, year):
am = [ i[1] for i in self.actmonths if i[0] == year ]
ml = []
for i in range(1, 13):
name = calendar.month_name[i][:3]
if i in am:
s = '<a href="%s/%d/%d/">%s</a>' % \
( blog_url, year, i, name )
else:
s = name
ml.append(s)
return ml
#
# Main
#
def render_comments(article, template, form_data):
print '<a name="comments" />'
for c in article.comments:
if c is None:
continue
print template.get_comment_header(c)
print c.to_html()
print template.get_comment_footer(c)
if not form_data:
form_data = CommentFormData()
form_data.action = blog_url + '/comment/' + article.uuid + '#comment'
captcha = captcha_method(article)
print template.get_comment_form(article, form_data, captcha.puzzle)
def render_html(articles, db, actyear = None, show_comments = False,
redirect = None, form_data = None):
if redirect:
print 'Status: 303 See Other\r\n',
print 'Location: %s\r\n' % redirect,
print 'Content-type: text/html; charset=utf-8\r\n',
print '\r\n',
template = Templates(templates_path, db, actyear)
print template.get_main_header()
for a in articles:
print template.get_article_header(a)
print a.to_html()
print template.get_article_footer(a)
if show_comments:
render_comments(a, template, form_data)
print template.get_main_footer()
def render_artlist(articles, db, actyear = None):
template = Templates(templates_path, db, actyear)
print 'Content-type: text/html; charset=utf-8\n'
print template.get_main_header()
print '<h2>Articles</h2>'
for a in articles:
print '<li><a href="%(url)s/post/%(uuid)s">%(title)s</a></li>' \
% { 'url': blog_url,
'uuid': a.uuid,
'title': a.title,
'author': a.author,
}
print template.get_main_footer()
def render_atom(articles):
if len(articles) > 0:
updated = articles[0].updated.isoformat()
else:
updated = datetime.datetime.now().isoformat()
print 'Content-type: application/atom+xml; charset=utf-8\n'
print """<?xml version="1.0" encoding="utf-8"?>
<feed xmlns="http://www.w3.org/2005/Atom">
<title>%(title)s</title>
<link rel="alternate" type="text/html" href="%(url)s"/>
<link rel="self" type="application/atom+xml" href="%(url)s/atom"/>
<id>%(url)s</id> <!-- TODO: find a better <id>, see RFC 4151 -->
<updated>%(updated)sZ</updated>
""" % {
'title': title,
'url': full_url,
'updated': updated,
}
for a in articles:
vars = a.to_vars()
vars.update( {
'url': full_url,
'contents': a.to_html(),
} )
print """
<entry>
<title>%(arttitle)s</title>
<author><name>%(author)s</name></author>
<link href="%(url)s/post/%(uuid)s" />
<id>%(url)s/post/%(uuid)s</id>
<summary>%(arttitle)s</summary>
<published>%(ciso)sZ</published>
<updated>%(uiso)sZ</updated>
<content type="xhtml">
<div xmlns="http://www.w3.org/1999/xhtml"><p>
%(contents)s
</p></div>
</content>
</entry>
""" % vars
print "</feed>"
def render_style():
print 'Content-type: text/css\r\n\r\n',
print default_css
def handle_cgi():
import cgitb; cgitb.enable()
form = cgi.FieldStorage()
year = int(form.getfirst("year", 0))
month = int(form.getfirst("month", 0))
day = int(form.getfirst("day", 0))
tags = set(form.getlist("tag"))
uuid = None
atom = False
style = False
post = False
post_preview = False
artlist = False
comment = False
if os.environ.has_key('PATH_INFO'):
path_info = os.environ['PATH_INFO']
style = path_info == '/style'
atom = path_info == '/atom'
tag = path_info.startswith('/tag/')
post = path_info.startswith('/post/')
post_preview = path_info.startswith('/preview/post/')
artlist = path_info.startswith('/list')
comment = path_info.startswith('/comment/') and enable_comments
if not style and not atom and not post and not post_preview \
and not tag and not comment and not artlist:
date = path_info.split('/')[1:]
try:
if len(date) > 1 and date[0]:
year = int(date[0])
if len(date) > 2 and date[1]:
month = int(date[1])
if len(date) > 3 and date[2]:
day = int(date[2])
except ValueError:
pass
elif post:
uuid = path_info.replace('/post/', '')
uuid = uuid.replace('/', '')
elif post_preview:
art_path = path_info.replace('/preview/post/', '')
art_path = urllib.unquote_plus(art_path)
art_path = os.path.join(data_path, art_path)
art_path = os.path.realpath(art_path)
common = os.path.commonprefix([data_path, art_path])
if common != data_path: # something nasty happened
post_preview = False
art_path = art_path[len(data_path)+1:]
elif tag:
t = path_info.replace('/tag/', '')
t = t.replace('/', '')
t = urllib.unquote_plus(t)
tags = set((t,))
elif comment:
uuid = path_info.replace('/comment/', '')
uuid = uuid.replace('#comment', '')
uuid = uuid.replace('/', '')
author = form.getfirst('comformauthor', '')
link = form.getfirst('comformlink', '')
captcha = form.getfirst('comformcaptcha', '')
body = form.getfirst('comformbody', '')
db = ArticleDB(os.path.join(data_path, 'db'))
if atom:
articles = db.get_articles(tags = tags)
articles.sort(reverse = True)
render_atom(articles[:10])
elif style:
render_style()
elif post:
render_html( [db.get_article(uuid)], db, year, enable_comments )
elif post_preview:
article = Article(art_path, datetime.datetime.now(),
datetime.datetime.now())
render_html( [article], db, year, enable_comments )
elif artlist:
articles = db.get_articles()
articles.sort(cmp = Article.title_cmp)
render_artlist(articles, db)
elif comment and enable_comments:
form_data = CommentFormData(author.strip().replace('\n', ' '),
link.strip().replace('\n', ' '), captcha,
body.replace('\r', ''))
article = db.get_article(uuid)
captcha = captcha_method(article)
redirect = False
valid = True
if not form_data.author:
form_data.author_error = 'please, enter your name'
valid = False
if form_data.link:
link = valid_link(form_data.link)
if link:
form_data.link = link
else:
form_data.link_error = 'please, enter a ' \
'valid link'
valid = False
if not captcha.validate(form_data):
form_data.captcha_error = captcha.help
valid = False
if not form_data.body:
form_data.body_error = 'please, write a comment'
valid = False
else:
error = validate_rst(form_data.body, secure=False)
if error is not None:
(line, desc, ctx) = error
at = ''
if line:
at = ' at line %d' % line
form_data.body_error = 'error%s: %s' \
% (at, desc)
valid = False
if valid:
c = article.add_comment(form_data.author,
form_data.body, form_data.link)
c.save()
cdb = CommentDB(article)
cdb.comments = article.comments
cdb.save()
redirect = blog_url + '/post/' + uuid + '#comment-' \
+ str(c.number)
render_html( [article], db, year, enable_comments, redirect,
form_data )
else:
articles = db.get_articles(year, month, day, tags)
articles.sort(reverse = True)
if not year and not month and not day and not tags:
articles = articles[:10]
render_html(articles, db, year)
def usage():
print 'Usage: %s {add|rm|update} article_path' % sys.argv[0]
def handle_cmd():
if len(sys.argv) != 3:
usage()
return 1
cmd = sys.argv[1]
art_path = os.path.realpath(sys.argv[2])
if os.path.commonprefix([data_path, art_path]) != data_path:
print "Error: article (%s) must be inside data_path (%s)" % \
(art_path, data_path)
return 1
art_path = art_path[len(data_path)+1:]
db_filename = os.path.join(data_path, 'db')
if not os.path.isfile(db_filename):
open(db_filename, 'w').write('')
db = ArticleDB(db_filename)
if cmd == 'add':
article = Article(art_path, datetime.datetime.now(),
datetime.datetime.now())
for a in db.articles:
if a == article:
print 'Error: article already exists'
return 1
db.articles.append(article)
db.save()
if enable_comments:
comment_dir = os.path.join(comments_path, article.uuid)
try:
os.mkdir(comment_dir, 0775)
except OSError, e:
if e.errno != errno.EEXIST:
print "Error: can't create comments " \
"directory %s (%s)" \
% (comment_dir, e)
# otherwise is probably a removed and re-added
# article
elif cmd == 'rm':
article = Article(art_path)
for a in db.articles:
if a == article:
break
else:
print "Error: no such article"
return 1
if enable_comments:
r = raw_input('Remove comments [y/N]? ')
db.articles.remove(a)
db.save()
if enable_comments and r.lower() == 'y':
shutil.rmtree(os.path.join(comments_path, a.uuid))
elif cmd == 'update':
article = Article(art_path)
for a in db.articles:
if a == article:
break
else:
print "Error: no such article"
return 1
a.updated = datetime.datetime.now()
db.save()
else:
usage()
return 1
return 0
if os.environ.has_key('GATEWAY_INTERFACE'):
i = datetime.datetime.now()
handle_cgi()
f = datetime.datetime.now()
print '<!-- render time: %s -->' % (f-i)
else:
sys.exit(handle_cmd())