nb (https://github.com/xwmx/nb) plugin for Franklin (https://github.com/tlienart/Franklin.jl) export

franklin.nb-plugin

#!/usr/bin/env bash

# MIT License, Copyright (c) 2021 Fredrik Ekre. See end of file for full license.

_subcommands add "franklin"

_subcommands describe "franklin" <<EOF
Usage:
  nb franklin <nb selector> file

Description:
  Export an nb file to a Franklin-compatible markdown format, see
  https://github.com/tlienart/Franklin.jl.
  Require julia to be installed and in PATH.
  Write to standard out if no output file is given.
EOF

_franklin() {
    # First argument is the nb file selector
    local _selector="${1:-}"
    if [[ -z "${_selector}" ]]; then
        _help "franklin"
        exit 1
    fi
    # Extract the file
    file="$(_show "${_selector}" --path)"
    if [[ ! -f "${file}" ]]; then
        echo "File ${file} not found." 1>&2
        exit 1
    fi
    # Second argument is the output file
    local dest="${2:--}"
    # Make sure julia is installed
    julia=${JULIA:-julia}
    if ! command -v "${julia}" ---version &> /dev/null; then
        echo "Can not find julia installation" 1>&2
        exit 1
    fi

    # Query what we need from the file
    tags=$(_list "${file}" --tags)
    title=$(_show "${file}" --title)
    date=$(_show "${file}" --updated)

    ${julia} --compile=min --optimize=0 -e "
    # Input
    nbfile = \"${file}\"
    tags = collect(String(chop(x, head=1, tail=0)) for x in eachline(IOBuffer(\"${tags}\")))
    title = \"${title}\"
    date = match(r\"(\d{4}-\d{2}-\d{2}).*\", \"${date}\")[1]
    dest = \"${dest}\"
    # Create output
    io = IOBuffer()
    print(io, \"+++\n\",
              \"title = \\\"\", title, \"\\\"\n\",
              \"date = \\\"\", date, \"\\\"\n\",
              \"tags = \", tags, \"\n\",
              \"+++\n\n\"
    )
    content = read(nbfile, String)
    # Remove tags
    for t in tags
        global content = replace(content, \"#\$t\" => \"\")
    end
    print(io, content)
    seekstart(io)
    if dest == \"-\"
        write(stdout, io)
    else
        open(f -> write(f, io), dest, \"w\")
    end
    "
}

# MIT License
# 
# Copyright (c) 2021 Fredrik Ekre
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE