transformjson.rb

=begin
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This is free and unencumbered software released into the public domain.

Anyone is free to copy, modify, publish, use, compile, sell, or
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of this software dedicate any and all copyright interest in the
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of the public at large and to the detriment of our heirs and
successors. We intend this dedication to be an overt act of
relinquishment in perpetuity of all present and future rights to this
software under copyright law.

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 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.

For more information, please refer to <https://unlicense.org>

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This script transforms JSON files by inserting spaces at possible places. This
script is mainly used to make generated JSON files more human readable or
removing all unnecessary spaces to reduce the total file size.


# Additional Options

- `--indent=AMOUNT` --- indent level by this amount of spaces (default: 2
  spaces)
- `--after-colon=AMOUNT` --- amount of spaces inserted after each colon (`:`)
  (default: 1 space)
- `--before-colon=AMOUNT` --- amount of spaces inserted after each colon
  (`:`) (default: none)
- `--array-indent=AMOUNT` --- amount of newlines used to indent arrays
  (default: 1 newline)
- `--object-indent=AMOUNT` --- amount of newlines used to indent objects
  (default: 1 newline)

Leaving all options will generate human readable format by default.


# Examples

This script is usually put in the far end of pre scripts. Transform into
minimum file size.

```toml
[scripts]
# ...
pre = [
  # ...
  {
    run = "transformjson.rb",
    with = "ruby",
    args = [
      "--indent=0",
      "--before-colon=0",
      "--after-colon=0",
      "--array-indent=0",
      "--object-indent=0",
    ]
  }
]
```

-------------------------------------------------------------------------------
=end

require 'json'
require 'optparse'
require 'pathname'

BP = Pathname.new(ENV['ALLAY_BP_PATH'])
RP = Pathname.new(ENV['ALLAY_RP_PATH'])
SP = Pathname.new(ENV['ALLAY_SP_PATH'])
WT = Pathname.new(ENV['ALLAY_WT_PATH'])

options = {
  :indent => " " * 2,
  :space => " ",
  :space_before => "",
  :array_nl => "\n",
  :object_nl => "\n",
}
OptionParser.new do |opts|
  opts.on "--indent=AMOUNT" do |a|
    options[:indent] = " " * Integer(a)
  end

  opts.on "--after-colon=AMOUNT" do |a|
    options[:space] = " " * Integer(a)
  end

  opts.on "--before-colon=AMOUNT" do |a|
    options[:space_before] = " " * Integer(a)
  end

  opts.on "--array-indent=AMOUNT" do |a|
    options[:array_nl] = "\n" * Integer(a)
  end

  opts.on "--object-indent=AMOUNT" do |a|
    options[:object_nl] = "\n" * Integer(a)
  end
end.parse!

[BP, RP, SP, WT].each do |path|
  path.glob "**/*.json" do |json_file|
    next if json_file.directory?
    json_data = JSON.load_file json_file
    transformed = JSON.generate(json_data, options)
    json_file.open('w') do |f|
      json_file.write(transformed)
    end
  end
end