#/bin/python3
import os
import subprocess
import sys
import re
import io
import fileinput
import time
import signal
import blessed
from config.config import *
from utils import utils
from generators import generators
def generate(args):
"""Wrapper for generate_blog(fresh=False)."""
# pylint: disable=unused-argument
exit(generators.generate_blog(fresh=False))
def regenerate(args):
"""Wrapper for generate_blog(fresh=True)."""
# pylint: disable=unused-argument
exit(generators.generate_blog(fresh=True))
def edit_post_with_editor(path):
"""Launch text editor to edit post at a given path.
Text editor is $VISUAL, then if empty, $EDITOR, then if still empty,
vi.
"""
if "VISUAL" in os.environ:
editor = os.environ["VISUAL"]
elif "EDITOR" in os.environ:
editor = os.environ["EDITOR"]
else:
editor = "vi"
subprocess.call([editor, path])
def new_post(title):
"""Create a new post with metadata pre-filled.
The path to the new post is printed to stdout.
Returns
-------
0
On success.
"""
date = utils.current_datetime()
filename_date = date.strftime("%Y-%m-%d")
iso_date = date.isoformat()
display_date = "%s %d, %d" % (date.strftime("%B"), date.day, date.year)
title_sanitized = utils.sanitize(title)
filename = "%s-%s.md" % (filename_date, title_sanitized)
fullpath = os.path.join(POSTSDIR, filename)
if not os.path.isdir(POSTSDIR):
if os.path.exists(POSTSDIR):
os.remove(POSTSDIR)
os.mkdir(POSTSDIR, mode=0o755)
if os.path.exists(fullpath):
sys.stderr.write("%serror: '%s' already exists, please pick a different title%s\n" %
(RED, fullpath, RESET))
return 1
with open(fullpath, 'w', encoding='utf-8') as newpost:
newpost.write("---\n")
newpost.write('title: "%s"\n' % title)
newpost.write("date: %s\n" % iso_date)
newpost.write("date_display: %s\n" % display_date)
newpost.write("---\n\n")
sys.stderr.write("New post created in:\n")
print(fullpath)
edit_post_with_editor(fullpath)
return 0
def new_post_cli(args):
"""CLI wrapper around new_post."""
new_post(args.title)
def touch(filename):
"""Update the timestamp of a post to the current time."""
filename = os.path.basename(filename)
fullpath = os.path.join(POSTSDIR, filename)
if not os.path.exists(fullpath):
sys.stderr.write("%serror: post %s not found %s\n" %
(RED, fullpath, RESET))
return 1
filename_prefix_re = re.compile(r"^[0-9]{4}-[0-9]{2}-[0-9]{2}")
if not filename_prefix_re.match(filename):
sys.stderr.write(RED)
sys.stderr.write("error: post %s is not a valid post\n" % filename)
sys.stderr.write("error: the filename of a valid post begins with "
"a date in the form xxxx-xx-xx\n")
sys.stderr.write(RESET)
return 1
# update timestamp in the metadata section of the post
whatchanged = io.StringIO()
date = utils.current_datetime()
iso_date = date.isoformat()
display_date = "%s %d, %d" % (date.strftime("%B"), date.day, date.year)
filename_date = date.strftime("%Y-%m-%d")
with fileinput.input(files=(fullpath), inplace=True) as lines:
meta_fences = 0
for line in lines:
if line.startswith("---"):
meta_fences += 1
sys.stdout.write(line)
continue
if meta_fences >= 2:
# already went past the metadata section
sys.stdout.write(line)
continue
if line.startswith("date: "):
updated_line = "date: %s\n" % iso_date
sys.stdout.write(updated_line)
whatchanged.write("-%s+%s\n" % (line, updated_line))
continue
if line.startswith("date_display: "):
updated_line = "date_display: %s\n" % display_date
sys.stdout.write(updated_line)
whatchanged.write("-%s+%s\n" % (line, updated_line))
continue
sys.stdout.write(line)
sys.stderr.write("\n%schangeset:%s\n\n%s" %
(YELLOW, RESET, whatchanged.getvalue()))
whatchanged.close()
# check if the file needs to be renamed
new_filename = filename_prefix_re.sub(filename_date, filename)
if new_filename != filename:
new_fullpath = os.path.join(POSTSDIR, new_filename)
os.rename(fullpath, new_fullpath)
sys.stderr.write("%srenamed to %s%s\n" % (YELLOW, new_filename, RESET))
return 0
def touch_cli(args):
"""CLI wrapper around touch."""
touch(args.filename)
def deploy(args):
"""Deploys build directory to origin/master without regenerating.
Returns
-------
0
On success. Exit early with nonzero status otherwise.
"""
# pylint: disable=unused-argument,too-many-statements
# check whether root is dirty
os.chdir(ROOTDIR)
dirty = subprocess.check_output(["git", "status", "--porcelain"])
if dirty:
sys.stderr.write(YELLOW)
sys.stderr.write("Project root is dirty.\n")
sys.stderr.write("You may want to commit in your changes "
"to the source branch, since the SHA and title "
"of the latest commit on the source branch will be "
"incorporated into the commit message on "
"the deployment branch. Type s[hell] on the "
"next prompt to open an interactive shell.\n")
sys.stderr.write(RESET)
while True:
sys.stderr.write("Continue? [yNs] ")
answer = input()
if not answer:
# default
abort = True
break
elif answer.startswith(('y', 'Y')):
abort = False
break
elif answer.startswith(('n', 'N')):
abort = True
break
elif answer.startswith(('s', 'S')):
shell = (os.environ['SHELL'] if 'SHELL' in os.environ and os.environ['SHELL']
else 'zsh')
subprocess.call(shell)
stilldirty = subprocess.check_output(["git", "status", "--porcelain"])
if stilldirty:
sys.stderr.write(YELLOW)
sys.stderr.write("Project root is still dirty.\n")
sys.stderr.write(RESET)
else:
sys.stderr.write("Please answer yes or no.\n")
if abort:
sys.stderr.write("%saborting deployment%s\n" % (RED, RESET))
return 1
# extract latest commit on the source branch
source_commit = subprocess.check_output(
["git", "log", "-1", "--pretty=oneline", "source", "--"]).decode('utf-8').strip()
# cd into BUILDDIR and assemble commit message
sys.stderr.write("%scommand: cd '%s'%s\n" % (BLUE, BUILDDIR, RESET))
os.chdir(BUILDDIR)
# extract updated time from atom.xml
if not os.path.exists("atom.xml"):
sys.stderr.write("atom.xml not found, cannot deploy\naborting\n")
return 1
atomxml = ET.parse("atom.xml").getroot()
updated = atomxml.find('{http://www.w3.org/2005/Atom}updated').text
commit_message = ("Site updated at %s\n\nsource branch was at:\n%s\n" %
(updated, source_commit))
# commit changes in BUILDDIR
sys.stderr.write("%scommand: git add --all%s\n" % (BLUE, RESET))
subprocess.check_call(["git", "add", "--all"])
sys.stderr.write("%scommand: git commit --no-verify --gpg-sign --message='%s'%s\n" %
(BLUE, commit_message, RESET))
try:
subprocess.check_call(["git", "commit", "--gpg-sign",
"--message=%s" % commit_message])
except subprocess.CalledProcessError:
sys.stderr.write("\n%serror: git commit failed%s\n" % (RED, RESET))
return 1
# check dirty status
dirty = subprocess.check_output(["git", "status", "--porcelain"])
if dirty:
sys.stderr.write(RED)
sys.stderr.write("error: failed to commit all changes; "
"build directory still dirty\n")
sys.stderr.write("error: please manually inspect what was left out\n")
sys.stderr.write(RESET)
return 1
# push to origin/master
sys.stderr.write("%scommand: git push origin master%s\n" % (BLUE, RESET))
try:
subprocess.check_call(["git", "push", "origin", "master"])
except subprocess.CalledProcessError:
sys.stderr.write("\n%serror: git push failed%s\n" % (RED, RESET))
return 1
return 0
def gen_deploy(args):
"""Regenerate and deploy."""
# pylint: disable=unused-argument,too-many-branches
# try to smartly determine the latest post, and prompt to touch it
current_time = time.time()
latest_post = None
latest_postdate = 0
latest_mtime = 0
for name in os.listdir(POSTSDIR):
matchobj = re.match(r"^([0-9]{4})-([0-9]{2})-([0-9]{2})-.*\.md", name)
if not matchobj:
continue
fullpath = os.path.join(POSTSDIR, name)
mtime = os.path.getmtime(fullpath)
# get post date from the date metadata field of the post
postdate = 0
with open(fullpath) as postobj:
for line in postobj:
dateregex = r"^date: (\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}-\d{2}:?\d{2})"
datematch = re.match(dateregex, line.rstrip())
if datematch:
postdate = dateutil.parser.parse(datematch.group(1)).timestamp()
break
# skip the post if it is dated more than three days ago
if current_time - postdate > 3 * 24 * 3600:
continue
if mtime > latest_mtime:
latest_post = name
latest_postdate = postdate
latest_mtime = mtime
# prompt for touching if the latest post determined above was
# modified within the last hour but the date registered in the post
# isn't within the last ten minutes
if ((latest_post is not None and current_time - latest_mtime < 3600 and
current_time - latest_postdate > 600)):
sys.stderr.write("%sIt appears that %s might be a new post.\n"
"Do you want to touch its timestamp?%s\n" %
(GREEN, latest_post, RESET))
while True:
yesnoquit = input("[ynq]: ")
if yesnoquit.startswith(("Y", "y")):
yesno = True
break
elif yesnoquit.startswith(("N", "n")):
yesno = False
break
elif yesnoquit.startswith(("Q", "q")):
sys.stderr.write("%saborting gen_deploy%s\n" % (RED, RESET))
return 1
else:
sys.stderr.write("Please answer yes, no, or quit.\n")
if yesno:
sys.stderr.write("%stouching %s%s\n" % (BLUE, latest_post, RESET))
touch(latest_post)
sys.stderr.write("\n")
generators.generate_blog(fresh=True)
deploy(None)
def preview(args):
"""Serve the blog and auto regenerate upon changes."""
# pylint: disable=unused-argument
server_process = utils.HTTPServerProcess(BUILDDIR)
server_process.start()
sys.stderr.write("watching for changes\n")
sys.stderr.write("send SIGINT to stop\n")
# install a SIGINT handler only for this process
sigint_raised = False
def sigint_mitigator(signum, frame):
"""Translate SIGINT to setting the sigint_raised flag."""
nonlocal sigint_raised
sigint_raised = True
signal.signal(signal.SIGINT, sigint_mitigator)
# Watch and auto-regen.
# No need to actually implement watch separately, since
# generate_blog(fresh=False, report_total_errors=False) already
# watches for modifications and only regens upon changes, and it is
# completely silent when there's no change.
while not sigint_raised:
generators.generate_blog(fresh=False, report_total_errors=False)
time.sleep(0.5)
sys.stderr.write("\nSIGINT received, cleaning up...\n")
server_process.join()
return 0
def edit_existing_post(args):
selector = utils.PostSelector(blessed.Terminal(), utils.list_posts())
selection = selector.select()
if selection:
print(selection)
edit_post_with_editor(selection)
else:
return 1