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2 changed files with 4 additions and 79 deletions

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@ -37,29 +37,12 @@ coronation:
Hostname: coronation.cs.ualberta.ca Hostname: coronation.cs.ualberta.ca
``` ```
## Quick Start ## Rules
```bash
mv ~/.ssh/config ~/.ssh/config_og
python3 src/ssh_config_to_yaml.py ~/.ssh/config_og --out ~/.ssh/config.yaml
# Do some edits on ~/.ssh/config.yaml. The migration script won't compress
# things with for-loops or templates. Then...
python3 ~/.ssh/config.yaml --out ~/.ssh/config
```
As a proof of concept, you can even chain the scripts! The order of hosts will
change, but the config should function identically!
```bash
python3 src/main.py <(python3 src/ssh_config_to_yaml.py ~/.ssh/config)
```
# Rules
The `src/ssh_config_to_yaml.py` script will assist in quickly migrating your The `src/ssh_config_to_yaml.py` script will assist in quickly migrating your
existing config. existing config.
### SSH Properties #### SSH Properties
Standard SSH config properties go under the `ssh_props` heading for every host. Standard SSH config properties go under the `ssh_props` heading for every host.
For example: For example:
@ -89,7 +72,7 @@ github.com:
Note that yaml does not support duplicate keys, so keys can take a list of Note that yaml does not support duplicate keys, so keys can take a list of
properties instead to mimic repeated keys, as seen above. properties instead to mimic repeated keys, as seen above.
### Templates #### Templates
Templates are "default" properties inherited from another host. Templates must Templates are "default" properties inherited from another host. Templates must
be declared above the host that uses it. You can make a template-only host by be declared above the host that uses it. You can make a template-only host by
@ -170,7 +153,7 @@ Host ohaton
LocalForward 9000 localhost:9000 LocalForward 9000 localhost:9000
``` ```
### For loops #### For loops
For loops allow simple substitution of a single variable over a range or set of For loops allow simple substitution of a single variable over a range or set of
values. Ranges must be numerical, but sets can be any arbitrary string. Multiple values. Ranges must be numerical, but sets can be any arbitrary string. Multiple

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@ -1,58 +0,0 @@
import argparse
import json
import re
import yaml
from pathlib import Path
parser = argparse.ArgumentParser(description="Process some integers.")
parser.add_argument("file", type=Path, help="yaml config")
parser.add_argument("--json", action="store_true", help="output parse as json")
parser.add_argument("--out", type=Path, help="write into file")
args = parser.parse_args()
def parse_sshconfig(lines):
parse = dict()
hostname = None
host = dict()
re_host = re.compile(r"^\s*Host (.+)$")
re_prop = re.compile(r"^\s*([A-Za-z]+)[ =](.+)$")
for line in lines:
m_host = re_host.match(line)
m_prop = re_prop.match(line)
if m_host:
if hostname is not None:
parse[hostname] = { "ssh_props": host }
hostname = m_host[1]
host = dict()
elif m_prop and host.get(m_prop[1]):
host[m_prop[1]].append(m_prop[2])
elif m_prop:
host[m_prop[1]] = [m_prop[2]]
if hostname is not None:
parse[hostname] = { "ssh_props": host }
return parse
# ╔───────────────────────────────────────────────────────────────────────────╗
# │ Mαiη |
# ╚───────────────────────────────────────────────────────────────────────────╝
with open(args.file, "r") as f:
lines = f.read().splitlines()
parse = parse_sshconfig(lines)
if args.json:
print(json.dumps(parse))
elif args.out:
with open(args.out, "w") as f:
f.write(yaml.dump(parse))
else:
print(yaml.dump(parse), end="")