Obsidian to org-roam migration kit – a completely half-baked attempt at moving from Obsidian to org-roam which nevertheless works (for me).

obsidian-to-org.py

#!/usr/bin/python

import sys,re,os

if not os.path.isdir("out/"):
    os.mkdir("out/")

md_file = sys.argv[1]
org_file = md_file[:-3] + ".org"

def replace(pattern, substitution, filename):
    f = open(filename, "r+")
    content = f.read()
    content = re.sub(pattern, substitution, content)
    f.seek(0)
    f.write(content)
    f.truncate()
    f.close()

# Treat all comments in file
re_comm = re.compile(r"^%%(.*?)%%", re.MULTILINE)
replace(re_comm, r"#!#comment: \1", md_file)

# Ensure space after "---"
re_ruler = re.compile(r"^---\n(.+)", re.MULTILINE)
replace(re_ruler, r"---\n\n\1", md_file)

# Convert from md to org
pandoc_command = 'pandoc -f markdown "{0}" --lua-filter=remove-header-attr.lua'\
                 ' --wrap=preserve -o out/"{1}"'.format(md_file,org_file)
os.system(pandoc_command)

# Regularize comments
re_comm_org = re.compile(r"^#!#comment:(.*?)$", re.MULTILINE)
replace(re_comm_org, r"#\1", "out/" + org_file)

# Convert all kinds of links
re_url = re.compile(r"\[\[(.*?)\]\[(.*?)\]\]")
re_link = re.compile(r"\[\[(.*?)\]\]")
re_link_description = re.compile(r"\[\[(.*?)\|(.*?)\]\]")

with open("out/" + org_file, "r+") as f:
    content = f.read()
    new_content = ""
    matches = re.finditer(r"\[\[.*?\]\]", content)
    pos = 0
    for m in matches:
        s = m.start()
        e = m.end()
        m_string = m.group(0)
        if "://" in m_string:
            new_content = new_content + content[pos:s] + re.sub(re_url, r"[[\1][\2]]", m_string)
        elif "|" in m_string:
            new_content = new_content + content[pos:s] + re.sub(re_link_description, r"[[file:\1.org][\2]]", m_string)
        else:
            new_content = new_content + content[pos:s] + re.sub(re_link, r"[[file:\1.org][\1]]", m_string)

        pos = e
    new_content = new_content + content[pos:]
    f.seek(0)
    f.write(new_content)
    f.truncate()

print("Converted " + org_file)

remove-header-attr.lua

function Header (header)
  return pandoc.Header(header.level, header.content, pandoc.Attr())
end

This is absolutely half-assed – I'm a linguist, not a programmer – but it still seems to have worked to migrate my largish collection of notes from Obsidian to org-roam.

Feel free to criticize the hell out of it.

I start by converting all my beginning-of-line non-markdown-standard comments – lines starting and ending by %%– to transitional comments which are later translated into proper org format comments.

I ensure there's \n between instances of --- and text so pandoc doesn't go all crazy making new headers.

Then pandoc does its thing.

After converting the comments into their final form, some arcane index alchemy I concocted converts wiki-style links into org-style links.

This took me more than I'd like to admit to put together, so I hope someone gets good use out of it and contributes a better version.

Have fun! All hail Eris!

No, no! Good job I'd say, Python is meant for such hackery.

Hey @s-c-p, thanks for the comment. That is really kind of you. Hope it has helped you, though I have found a few bugs which I manually corrected over my transition to org-roam.

Hi @rberaldo! I took this code and ran with it to make https://github.com/jml/obsidian-to-org, which I've used to convert my Obsidian files to org-roam. I hope you don't mind.

Let me know if you have an opinion about license. I'll default to GPL 3 if I don't hear from you.

@jml really cool work! GPL 3 is good to me. Maybe I'll update this gist to set a license and link to your work.

Thanks :) I've updated the repo with the license.

…

On Mon, 6 Jun 2022 at 20:03, Rafael Beraldo ***@***.***> wrote: ***@***.**** commented on this gist. ------------------------------ @jml <https://github.com/jml> really cool work! GPL 3 is good to me. Maybe I'll update this gist to set a license and link to your work. — Reply to this email directly, view it on GitHub <https://gist.github.com/2a3bd82d5ed4bc39fee7e8ff4a6242b2#gistcomment-4191138>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAA6V2XRZTLVHWA6RNH2JPDVNZDPVANCNFSM47L4JVNA> . You are receiving this because you were mentioned.Message ID: ***@***.***>