jrnl/jrnl/plugins/yaml_exporter.py

95 lines
4.2 KiB
Python

#!/usr/bin/env python
# encoding: utf-8
from __future__ import absolute_import, unicode_literals, print_function
from .text_exporter import TextExporter
import re
import sys
class YAMLExporter(TextExporter):
"""This Exporter can convert entries and journals into Markdown with YAML front matter."""
names = ["yaml"]
extension = "md"
@classmethod
def export_entry(cls, entry, to_multifile=True):
"""Returns a markdown representation of a single entry, with YAML front matter."""
if to_multifile is False:
print("{}ERROR{}: YAML export must be to individual files. Please specify a directory to export to.".format("\033[31m", "\033[0m", file=sys.stderr))
return
date_str = entry.date.strftime(entry.journal.config['timeformat'])
body_wrapper = "\n" if entry.body else ""
body = body_wrapper + entry.body
tagsymbols = entry.journal.config['tagsymbols']
# see also Entry.Entry.rag_regex
multi_tag_regex = re.compile(r'(?u)^\s*([{tags}][-+*#/\w]+\s*)+$'.format(tags=tagsymbols), re.UNICODE)
'''Increase heading levels in body text'''
newbody = ''
heading = '#'
previous_line = ''
warn_on_heading_level = False
for line in entry.body.splitlines(True):
if re.match(r"#+ ", line):
"""ATX style headings"""
newbody = newbody + previous_line + heading + line
if re.match(r"#######+ ", heading + line):
warn_on_heading_level = True
line = ''
elif re.match(r"=+$", line) and not re.match(r"^$", previous_line):
"""Setext style H1"""
newbody = newbody + heading + "# " + previous_line
line = ''
elif re.match(r"-+$", line) and not re.match(r"^$", previous_line):
"""Setext style H2"""
newbody = newbody + heading + "## " + previous_line
line = ''
elif multi_tag_regex.match(line):
"""Tag only lines"""
line = ''
else:
newbody = newbody + previous_line
previous_line = line
newbody = newbody + previous_line # add very last line
if warn_on_heading_level is True:
print("{}WARNING{}: Headings increased past H6 on export - {} {}".format("\033[33m", "\033[0m", date_str, entry.title), file=sys.stderr)
dayone_attributes = ''
if hasattr(entry, "uuid"):
dayone_attributes += 'uuid: ' + entry.uuid + '\n'
if hasattr(entry, 'creator_device_agent') or \
hasattr(entry, 'creator_generation_date') or \
hasattr(entry, 'creator_host_name') or \
hasattr(entry, 'creator_os_agent') or \
hasattr(entry, 'creator_software_agent'):
dayone_attributes += 'creator:\n'
if hasattr(entry, 'creator_device_agent'):
dayone_attributes += ' device agent: ' + entry.creator_device_agent + '\n'
if hasattr(entry, 'creator_generation_date'):
dayone_attributes += ' generation date: ' + str(entry.creator_generation_date) + '\n'
if hasattr(entry, 'creator_host_name'):
dayone_attributes += ' host name: ' + entry.creator_host_name + '\n'
if hasattr(entry, 'creator_os_agent'):
dayone_attributes += ' os agent: ' + entry.creator_os_agent + '\n'
if hasattr(entry, 'creator_software_agent'):
dayone_attributes += ' software agent: ' + entry.creator_software_agent + '\n'
return "title: {title}\ndate: {date}\nstared: {stared}\ntags: {tags}\n{dayone} {body} {space}".format(
date = date_str,
title = entry.title,
stared = entry.starred,
tags = ', '.join([tag[1:] for tag in entry.tags]),
dayone = dayone_attributes,
body = newbody,
space=""
)
@classmethod
def export_journal(cls, journal):
"""Returns an error, as YAML export requires a directory as a target."""
print("{}ERROR{}: YAML export must be to individual files. Please specify a directory to export to.".format("\033[31m", "\033[0m", file=sys.stderr))
return