hledger/bin/hledger-pijul

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2022-04-21 12:23:36 +03:00
#!/usr/bin/env bash
set -e
# * About
usage() { line80; cat <<EOF # keep synced with Commands below
hledger-pijul - easy version control for your hledger journal.
An experimental prototype, currently works for the default journal only.
This uses pijul, the VCS most likely to support a simple just-works UI.
A pijul repo in the main file's directory, and a pijul commit-signing key,
will be autocreated if needed.
Subcommands:
hledger pijul record [MSG] - record the journal's files (as listed by 'files')
hledger pijul status - show unrecorded changes (after first record)
hledger pijul log - list the journal's change history (after record)
hledger pijul - show this help
Extra arguments are passed to pijul (pijul flags should be preceded by --).
You can install these as more convenient top-level commands by creating
hledger-record, hledger-status, hledger-log scripts like:
#!/bin/sh
hledger-pijul record "\$@"
EOF
}
# * Utils
line80() { cat <<EOF
--------------------------------------------------------------------------------
EOF
}
no_repo_msg() {
echo "Try this again after 'record'."
}
MAINFILE=$LEDGER_FILE
FILES=$(hledger -f "$MAINFILE" files)
DIR=$(dirname "$MAINFILE")
# pijul executable name, just one word
PIJUL=pijul
ensure_pijul() {
if ! hash $PIJUL 2>/dev/null; then
cat >&2 <<EOF
This command requires '$PIJUL', but it's not installed in \$PATH.
Please install it (see https://pijul.org/downloads) and try again.
EOF
exit 1
fi
}
# TODO: also look in parent directories
ensure_pijul_repo() {
if [[ ! -d "$DIR/.pijul" ]]; then
$PIJUL init "$DIR"
echo "Created pijul repo in $DIR"
fi
}
ensure_pijul_key() {
PIJULDIR=$(pijul_config_dir)
if [[ ! -e $PIJULDIR/publickey.json ]]; then
echo "Creating a pijul commit signing key in $PIJULDIR"
echo "If you set a password below, you'll have to enter it every time you record."
# --------------------------------------------------------------------------------
$PIJUL key generate "$USER"
fi
}
pijul_config_dir() {
if [[ $(uname) == Darwin ]]; then
echo "$HOME/Library/Application Support/pijul"
else
echo "$HOME/.config/pijul" # guess
fi
}
# * Commands
# keep synced with usage() above
record() {
ensure_pijul
ensure_pijul_repo
ensure_pijul_key
cd "$DIR"
for F in $FILES; do $PIJUL add -f "$F"; done
MSG=${1:-$(date +'%Y-%m-%d %H:%M:%S %Z')}; shift || true
$PIJUL record -m "$MSG" "$@"
}
status() {
ensure_pijul
$PIJUL diff --repository "$DIR" "$@" #| sed -n '/^# Hunks/,$ p'
}
log() {
ensure_pijul
# ensure_pijul_repo
$PIJUL log --repository "$DIR" "$@"
}
# * Main
# NOTE intended to run Commands but will run any function above
if declare -f "$1" > /dev/null; then "$@"; else usage; fi