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Programming language: Crystal
License: MIT License
Tags: Template Engine    
Latest version: v0.7.0

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README

Teeplate

A Crystal library for rendering multiple template files.

CircleCI

Installation

Add this to your application's shard.yml:

dependencies:
  teeplate:
    github: mosop/teeplate

Supported Template Engines

  • ECR

Usage

require "teeplate"

Example

Let's make our crystal init template.

Template structure

  • spec/
    • spec_helper.cr.ecr
    • {{file}}_spec.cr.ecr
  • src/
    • {{file}}/
    • version.cr.ecr
    • {{file}}.cr.ecr
  • .gitignore
  • .travis.yml
  • LICENSE.ecr
  • README.md.ecr
  • shard.yml.ecr

Template file example

# shard.yml.ecr
name: <%= @file %>
version: 0.1.0

authors:
  - <%= @author %>

license: MIT

Template class definition

class CrystalInitTemplate < Teeplate::FileTree
  directory "#{__DIR__}/path/to/template"

  @file : String
  @class : String
  @author : String
  @year : Int32

  def initialize(@file, @class, @author, @year)
  end
end

Here we go!

template = CrystalInitTemplate.new("teeplate", "Teeplate", "mosop", 2016)
template.render "/path/to/output"

Output structure

  • spec/
    • spec_helper.cr
    • teeplate_spec.cr
  • src/
    • teeplate/
    • version.cr
    • teeplate.cr
  • .gitignore
  • .travis.yml
  • LICENSE
  • README.md
  • shard.yml

Output example

# shard.yml
name: teeplate
version: 0.1.0

authors:
  - mosop

license: MIT

Overwriting

Forced

If a file already exists, Teeplate skips rendering the file. To force overwriting, set the :force option:

class Template < Teeplate::FileTree
  directory "/path/to/template"

  @face : String

  def initialize(@face)
  end
end

Template.new(":)").render("/path/to/output")
Template.new(":(").render("/path/to/output", force: true) # files may be overwritten
Template.new(":P").render("/path/to/output") # nothing happens

Interactive

If the :interactive option is true, Teeplate prompts us to select whether to overwrite an existing file.

shard.yml already exists...
overwrite(o)/keep(k)/diff(d)/overwrite all(a)/keep all(n) ?

Listing Rendered Files

You can print a list of rendered files. To enable it, set true to the :list option and call #render.

template = BrandNewCrystalInitTemplate.new("teeplate", "Teeplate", "mosop", 2017)
template.render "/path/to/overwrite", list: true

Output example:

modified  .gitignore
identical .travis.yml
new       Dockerfile
skipped   LICENSE
skipped   README.md
skipped   shard.yml
modified  spec/spec_helper.cr
skipped   spec/teeplate_spec.cr
skipped   src/teeplate/version.cr
skipped   src/teeplate.cr

You can colorize the output by the :color option.

template.render "/path/to/overwrite", list: true, color: true

Want-to-do

  • Merge on overwriting

Release Notes

  • v0.3.0
    • Quit on overwriting
    • Rendering with append mode (see the issue)
    • Teeplate::FileTree#render prints a list of rendered files with the :list option.
  • v0.2.0
    • (Breaking Change) FileTree#initialize does not receive an output directory. Instead, FileTree#render does.
    • Diff on overwriting confirmation
    • Overwrite All / Keep All on overwriting confirmation
  • v0.1.3
    • :interactive option to select whether to overwrite existing files
  • v0.1.2
    • :force option to overwrite output files if they exist


*Note that all licence references and agreements mentioned in the teeplate README section above are relevant to that project's source code only.