Converts Day One JSON file to TextBundle

convert.py

import glob
import os
import json
import shutil
import sys
import re


def unescape(s):
    s = s.replace(r"\n", "\n")
    s = s.replace(r"\t", "\t")

    for c in "\\/+-_!*:.()[]":
        s = s.replace("\\" + c, c)

    return s


def convert_entry(entry):
    uuid = entry["uuid"]

    print("Converting entry {}".format(uuid))

    destdir = uuid + ".textbundle"
    os.makedirs(destdir, exist_ok=True)
    os.makedirs(destdir + "/assets", exist_ok=True)

    text = unescape(entry["text"])

    ids = re.findall(r"dayone-moment://([0-9A-F]+)", text)

    for i in ids:
        for photo in entry["photos"]:
            if i == photo["identifier"]:
                md5 = photo["md5"]
                break

        if not md5:
            print("MD5 for {} not found".format(i))
            continue

        files = glob.glob("photos/{}*".format(md5))

        if not files:
            print("Linked file for {} not found".format(i))
            continue

        shutil.copy(files[0], destdir + "/assets/")

        fname = files[0].replace("photos/", "assets/")
        text = text.replace("dayone-moment://" + i, fname)

    with open(destdir + "/text.md", mode="w") as f:
        f.write(text)

    with open(destdir + "/info.json", mode="w") as f:
        metadata = {
            "version":  2,
            "type":     "net.daringfireball.markdown"
        }

        json.dump(metadata, f)


def main():
    with open(sys.argv[1], encoding="utf-8") as f:
        j = json.load(f)

        for entry in j["entries"]:
            if "text" in entry:
                convert_entry(entry)


if __name__ == "__main__":
    main()