bxctl - Small helper to manage my boxcars configuration
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/.crystal/ | |
/bxctl | |
/pkg/ | |
/src/ | |
*.tar.xz |
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require "json" | |
CONFIG = ENV["BOXCARS_CONFIG"]? || "/etc/boxcars.json" | |
class Hash | |
def self.deep_cast(other_hash) | |
other_hash.each_with_object({} of K => V) {|entry, hash| | |
k, v = entry | |
hash[k.as(K)] = v.as(V) | |
} | |
end | |
end | |
def read_config | |
unless File.exists? CONFIG | |
STDERR.puts "#{CONFIG} not found!" | |
exit 1 | |
end | |
config = JSON.parse(File.read(CONFIG)).as_h | |
config.each_with_object({} of String => Hash(String, String)|String) {|entry, config| | |
name, target = entry | |
if target.is_a?(String) | |
config[name] = target | |
elsif target.is_a?(Hash) | |
config[name] = Hash(String, String).deep_cast(target) | |
end | |
} | |
end | |
def write_config(config) | |
File.write CONFIG, config.to_pretty_json | |
end | |
def help | |
puts "Usage: #{$0} name target - Add or change mapping" | |
puts " or: #{$0} delete name - Remove mapping" | |
puts " or: #{$0} - List current mappings" | |
end | |
def list | |
config = read_config | |
return if config.empty? | |
nested_names = config.values | |
.flat_map {|target| target.is_a?(Hash(String, String)) ? target.keys : [] of String } | |
nested_left_column = nested_names.empty? ? 0 : nested_names.max_of(&.size)+3 | |
left_column = [config.keys.max_of(&.size)+1, nested_left_column].max | |
config.each do |name, target| | |
print name.ljust(left_column) | |
if target.is_a? String | |
puts target | |
elsif target.is_a? Hash(String, String) | |
puts | |
target.each do |sub, target| | |
print " #{sub.ljust(left_column-2)}" | |
puts target | |
end | |
end | |
end | |
end | |
def parse_name(name) | |
if name.includes? "/" | |
name, path = name.split(/(?=\/)/, 2) | |
else | |
path = "/" | |
end | |
name = "#{name}.dev" unless name.ends_with? ".dev" | |
{name, path} | |
end | |
def find_mappings(config, name) | |
if !config.has_key? name | |
{} of String => String | |
elsif config[name].is_a? String | |
{"/" => config[name].as(String)} | |
else | |
config[name].as(Hash(String, String)) | |
end | |
end | |
def normalize_mappings(mappings) | |
if mappings.size == 1 && mappings.keys.first == "/" | |
mappings.values.first | |
else | |
mappings | |
end | |
end | |
def delete(name) | |
config = read_config | |
name, path = parse_name(name) | |
mappings = find_mappings(config, name) | |
if mappings.has_key? path | |
mappings.delete path | |
config[name] = normalize_mappings(mappings) | |
config.delete(name) if config[name].empty? | |
write_config config | |
puts "#{name}#{path} deleted." | |
else | |
puts "#{name}#{path} not found." | |
end | |
end | |
def change(name, target) | |
target = "localhost:#{target}" if target[/^\d+$/]? | |
config = read_config | |
name, path = parse_name(name) | |
mappings = find_mappings(config, name) | |
mappings[path] = target | |
config[name] = normalize_mappings(mappings) | |
write_config config | |
puts "#{name}#{path} points to #{target} now." | |
end | |
if ARGV.empty? | |
list | |
elsif ARGV[0]? == "-h" || ARGV[0]? == "--help" | |
help | |
elsif ARGV.size == 2 | |
if ARGV[0] == "delete" | |
delete ARGV[1] | |
else | |
change ARGV[0], ARGV[1] | |
end | |
else | |
help | |
exit 1 | |
end |
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The MIT License (MIT) | |
Copyright (c) 2017 Jonne Haß | |
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 SOFTWARE. |
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# Maintainer: Jonne Haß <me@jhass.eu> | |
pkgname=bxctl | |
pkgver=0.1.0 | |
pkgrel=1 | |
pkgdesc="CLI util to manage boxcars config" | |
arch=('i686' 'x86_64') | |
url="https://gist.github.com/jhass/739bc0f6ec53d0d44f56" | |
license=('MIT') | |
depends=('boxcars') | |
makedepends=('crystal') | |
source=("bxctl.cr") | |
build() { | |
cd "$srcdir" | |
crystal build --release bxctl.cr | |
} | |
package() { | |
cd "$srcdir" | |
install -Dm4755 "bxctl" "$pkgdir/usr/bin/bxctl" | |
} | |
sha256sums=('ad7b44e10f0329e8fe5564ea91696fc99cfe60642113bd3ce878e1062e06d2b9') |
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