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genie.py
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genie.py
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import os
import time
import codecs
import json
import logging
import functools
import mistune
logging.basicConfig(level=logging.INFO)
def parse_filename(filename):
date = filename.split('_')[0]
try:
dt = time.strptime(date, "%Y-%m-%d")
except ValueError:
raise Exception('Post filename is invalid')
return dt
class Post(object):
"""
Post class stores the information needed
about the post
"""
def __init__(self, src_path, dst_path, filename, ext_name):
self.filename = filename
self.ext_name = ext_name
self.dst_name = "post/" + self.filename + ".html"
self.src_full_path = src_path + self.filename + self.ext_name
self.dst_full_path = dst_path + self.filename + ".html"
if self.filename == 'about':
self.create_time = time.time()
else:
create_time = parse_filename(self.filename)
self.create_time_str = time.strftime("%d %b %Y", create_time)
self.create_time = time.mktime(create_time)
f = codecs.open(self.src_full_path, mode="r", encoding="utf8")
# Use the first line as title
self.title = f.readline()
f.seek(0)
self.text = f.read()
class Genie(object):
MAX_POSTS_PER_PAGE = 10
def __init__(self):
"""
Initialize settings
"""
self.load_settings()
self.posts = []
self.about = None
def load_settings(self):
f = open("genie.settings", "r")
settings = json.load(f)
self.in_file_path = settings['in_file_path']
self.out_file_path = settings['out_file_path']
self.blog_name = settings['blog_name']
def generate_page_with(self, posts, current_page=1, more_page=False):
if not posts:
return
post_titles = ""
out_file = ""
bottom_nav = ""
if current_page == 1:
out_file = "index.html"
else:
out_file = str(current_page) + '.html'
for post in posts:
# The About page, ignore it.
if post.filename == "about":
continue
# Generate post entry.
post_titles += '<div class="entry"><a class="title" href="' + post.dst_name + '">' + \
post.title + '</a><span class="date">' + \
post.create_time_str + '</span></div>\n'
if current_page == 1:
bottom_nav += '<span class="previous"><a href=""> </a></span>'
elif current_page > 1:
previous_page = None
if current_page == 2:
previous_page = "index.html"
else:
previous_page = str(current_page - 1) + ".html"
bottom_nav += '<span class="previous"><a href="' + \
previous_page + '">Previous</a></span>'
# More pages there.
if more_page:
next_page = str(current_page + 1) + ".html"
bottom_nav += '<span class="next"><a href="' + \
next_page + '">Next</a></span>'
result = self.index_template.format(
content=post_titles, blog_name=self.blog_name, bottom_nav=bottom_nav)
with open(self.out_file_path + out_file, "w+") as f:
f.write(result)
def generate_index(self):
start = 0
end = self.MAX_POSTS_PER_PAGE
page = 1
if len(self.posts) <= self.MAX_POSTS_PER_PAGE:
self.generate_page_with(
self.posts, current_page=page, more_page=False)
return
else:
self.generate_page_with(
self.posts[start:end], current_page=page, more_page=True)
page += 1
while end < len(self.posts):
start = end
end += self.MAX_POSTS_PER_PAGE
more = True
if end >= len(self.posts):
end = len(self.posts)
more = False
self.generate_page_with(
self.posts[start:end], current_page=page, more_page=more)
page += 1
def generate_post(self, text, out_file_name):
html = mistune.markdown(text, escape=False)
result = self.blog_template.format(
content=html, blog_name=self.blog_name)
with open(out_file_name, "w+") as f:
f.write(result)
def get_templates(self):
blog_template_file = codecs.open(
"./templates/post_template.html", mode="r", encoding="utf8")
index_template_file = codecs.open(
'./templates/index_template.html', mode="r", encoding="utf8")
self.blog_template = blog_template_file.read()
self.index_template = index_template_file.read()
blog_template_file.close()
index_template_file.close()
def get_posts(self):
src_path = self.in_file_path
dst_path = self.out_file_path + 'post/'
if os.path.isdir(src_path):
files = os.listdir(src_path)
for f in files:
prefix, ext = os.path.splitext(f)
# Read markdown files only
if ext in [".md", ".markdown", '.mdown', '.mkd', '.mkdn']:
post = Post(src_path, dst_path, prefix, ext)
if prefix.endswith('about'):
self.about = post
self.posts.append(post)
posts_count = len(self.posts)
if self.about:
posts_count -= 1
logging.info('Find {0} articles'.format(posts_count))
def render(self):
# Sort post in create time ascending
self.posts.sort(key=lambda p: p.create_time, reverse=True)
# Generate html for every post we have
logging.info('Start rendering')
for post in self.posts:
raw_text = post.text
self.generate_post(raw_text, post.dst_full_path)
logging.info('Done')
if self.about:
self.posts.remove(self.about)
self.generate_index()
def update(self):
self.get_templates()
self.get_posts()
self.render()
def main():
g = Genie()
g.update()
if __name__ == '__main__':
main()