jrnl/jrnl/exporters.py
2013-08-28 13:48:18 -07:00

110 lines
3.9 KiB
Python

#!/usr/bin/env python
# encoding: utf-8
import os
import string
try: from slugify import slugify
except ImportError: import slugify
try: import simplejson as json
except ImportError: import json
try: from .util import u
except (SystemError, ValueError): from util import u
def get_tags_count(journal):
"""Returns a set of tuples (count, tag) for all tags present in the journal."""
# Astute reader: should the following line leave you as puzzled as me the first time
# I came across this construction, worry not and embrace the ensuing moment of enlightment.
tags = [tag
for entry in journal.entries
for tag in set(entry.tags)
]
# To be read: [for entry in journal.entries: for tag in set(entry.tags): tag]
tag_counts = set([(tags.count(tag), tag) for tag in tags])
return tag_counts
def to_tag_list(journal):
"""Prints a list of all tags and the number of occurrences."""
tag_counts = get_tags_count(journal)
result = ""
if not tag_counts:
return '[No tags found in journal.]'
elif min(tag_counts)[0] == 0:
tag_counts = filter(lambda x: x[0] > 1, tag_counts)
result += '[Removed tags that appear only once.]\n'
result += "\n".join(u"{0:20} : {1}".format(tag, n) for n, tag in sorted(tag_counts, reverse=True))
return result
def to_json(journal):
"""Returns a JSON representation of the Journal."""
tags = get_tags_count(journal)
result = {
"tags": dict((tag, count) for count, tag in tags),
"entries": [e.to_dict() for e in journal.entries]
}
return json.dumps(result, indent=2)
def to_md(journal):
"""Returns a markdown representation of the Journal"""
out = []
year, month = -1, -1
for e in journal.entries:
if not e.date.year == year:
year = e.date.year
out.append(str(year))
out.append("=" * len(str(year)) + "\n")
if not e.date.month == month:
month = e.date.month
out.append(e.date.strftime("%B"))
out.append('-' * len(e.date.strftime("%B")) + "\n")
out.append(e.to_md())
result = "\n".join(out)
return result
def to_txt(journal):
"""Returns the complete text of the Journal."""
return journal.pprint()
def export(journal, format, output=None):
"""Exports the journal to various formats.
format should be one of json, txt, text, md, markdown.
If output is None, returns a unicode representation of the output.
If output is a directory, exports entries into individual files.
Otherwise, exports to the given output file.
"""
maps = {
"json": to_json,
"txt": to_txt,
"text": to_txt,
"md": to_md,
"markdown": to_md
}
if output and os.path.isdir(output): # multiple files
return write_files(journal, output, format)
else:
content = maps[format](journal)
if output:
try:
with open(output, 'w') as f:
f.write(content)
return "[Journal exported to {0}]".format(output)
except IOError as e:
return "[ERROR: {0} {1}]".format(e.filename, e.strerror)
else:
return content
def write_files(journal, path, format):
"""Turns your journal into separate files for each entry.
Format should be either json, md or txt."""
make_filename = lambda entry: e.date.strftime("%C-%m-%d_{0}.{1}".format(slugify(u(e.title)), format))
for e in journal.entries:
full_path = os.path.join(path, make_filename(e))
if format == 'json':
content = json.dumps(e.to_dict(), indent=2) + "\n"
elif format == 'md':
content = e.to_md()
elif format == 'txt':
content = u(e)
with open(full_path, 'w') as f:
f.write(content)
return "[Journal exported individual files in {0}]".format(path)