ralfebert/create

## create
#!/usr/bin/env ruby

# Create and open a file from the shell using simple templates
# https://gist.github.com/ralfebert/cdc30dbc9d2c2356d8f9b6b7c1492888/edit

require 'date'
require 'shellwords'
require 'ostruct'
require 'optionparser'

# --- Templates

templates = []

templates << OpenStruct.new(ext: ".md", name: "Markdown", text: "# Hello world")

templates << OpenStruct.new(ext: ".html", name: "HTML", text: %{<html>
    <head>
      <title>Example</title>
      <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/spcss@0.5.0">
    </head>
    <body>
      <h1>Hello World</h1>
    </body>
</html>
})

templates << OpenStruct.new(ext: ".rb", executable: true, name: "Ruby", text: %{#!/usr/bin/env ruby

puts 'Hello world'
})

templates << OpenStruct.new(ext: ".py", executable: true, name: "Python", text: %{#!/usr/bin/env python

print('Hello world')
})

templates << OpenStruct.new(ext: ".csv", executable: true, name: "Comma-separated values", text: %{Column 1,Column 2
Hello,World
})

# --- Command line arguments

options = OpenStruct.new
parser = OptionParser.new do |opts|
  opts.banner = %{Usage: create [options] [filename]

By default the file is created in ~/Desktop, you can also create a file in the current folder, f.e.
create ./index.html

Supported file formats:
#{templates.map { |template| "- #{template.name} (#{template.ext})" }.join("\n")}

Options:
}

  opts.on("-d", "--date", "Prefix with a timestamp") do |v|
    options[:date_prefix] = true
  end
end
parser.parse!

# --- File creation

name = ARGV.join(" ")

ext = File.extname(name).downcase

template = templates.filter{ |template| template.ext == ext }.first

unless template
  puts parser.help
  exit(1)
end

if name.start_with?('./')
  path = File.dirname(name)
  name = File.basename(name)
else
  path = File.join(File.expand_path('~'), 'Desktop')
end

if options.date_prefix
  name = DateTime.now.strftime("%Y-%m-%d %H.%M.%S") + " " + name
end

path = File.join(path, name)

if File.exist?(path)
  STDERR.puts("'#{path}' already exists.")
  exit(1)
end

File.write(path, template.text)
if template.executable
  FileUtils.chmod("+x", path)
end

`open #{path.shellescape}`
	#!/usr/bin/env ruby

	# Create and open a file from the shell using simple templates
	# https://gist.github.com/ralfebert/cdc30dbc9d2c2356d8f9b6b7c1492888/edit

	require 'date'
	require 'shellwords'
	require 'ostruct'
	require 'optionparser'

	# --- Templates

	templates = []

	templates << OpenStruct.new(ext: ".md", name: "Markdown", text: "# Hello world")

	templates << OpenStruct.new(ext: ".html", name: "HTML", text: %{<html>
	<head>
	<title>Example</title>
	<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/spcss@0.5.0">
	</head>
	<body>
	<h1>Hello World</h1>
	</body>
	</html>
	})

	templates << OpenStruct.new(ext: ".rb", executable: true, name: "Ruby", text: %{#!/usr/bin/env ruby

	puts 'Hello world'
	})

	templates << OpenStruct.new(ext: ".py", executable: true, name: "Python", text: %{#!/usr/bin/env python

	print('Hello world')
	})

	templates << OpenStruct.new(ext: ".csv", executable: true, name: "Comma-separated values", text: %{Column 1,Column 2
	Hello,World
	})

	# --- Command line arguments

	options = OpenStruct.new
	parser = OptionParser.new do \|opts\|
	opts.banner = %{Usage: create [options] [filename]

	By default the file is created in ~/Desktop, you can also create a file in the current folder, f.e.
	create ./index.html

	Supported file formats:
	#{templates.map { \|template\| "- #{template.name} (#{template.ext})" }.join("\n")}

	Options:
	}

	opts.on("-d", "--date", "Prefix with a timestamp") do \|v\|
	options[:date_prefix] = true
	end
	end
	parser.parse!

	# --- File creation

	name = ARGV.join(" ")

	ext = File.extname(name).downcase

	template = templates.filter{ \|template\| template.ext == ext }.first

	unless template
	puts parser.help
	exit(1)
	end

	if name.start_with?('./')
	path = File.dirname(name)
	name = File.basename(name)
	else
	path = File.join(File.expand_path('~'), 'Desktop')
	end

	if options.date_prefix
	name = DateTime.now.strftime("%Y-%m-%d %H.%M.%S") + " " + name
	end

	path = File.join(path, name)

	if File.exist?(path)
	STDERR.puts("'#{path}' already exists.")
	exit(1)
	end

	File.write(path, template.text)
	if template.executable
	FileUtils.chmod("+x", path)
	end

	`open #{path.shellescape}`