discourse/lib/freedom_patches/raw_handlebars.rb

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# frozen_string_literal: true
# barber patches to re-route raw compilation via ember compat handlebars
class Barber::Precompiler
def sources
[File.open("#{Rails.root}/app/assets/javascripts/node_modules/handlebars/dist/handlebars.js"),
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precompiler]
end
def precompiler
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if !@precompiler
loader = File.read("#{Rails.root}/app/assets/javascripts/node_modules/loader.js/dist/loader/loader.js")
source = File.read("#{Rails.root}/app/assets/javascripts/discourse-common/addon/lib/raw-handlebars.js")
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transpiled = DiscourseJsProcessor.transpile(source, "#{Rails.root}/app/assets/javascripts/", "discourse-common/lib/raw-handlebars")
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@precompiler = StringIO.new <<~JS
let __RawHandlebars;
(function(){
#{loader}
define("handlebars", ["exports"], function(exports){ exports.default = Handlebars; })
#{transpiled}
__RawHandlebars = require("discourse-common/lib/raw-handlebars").default;
})()
Barber = {
precompile: function(string) {
return __RawHandlebars.precompile(string, false).toString();
}
};
JS
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end
@precompiler
end
end
module Discourse
module Ember
module Handlebars
module Helper
def precompile_handlebars(string, input = nil)
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"requirejs('discourse-common/lib/raw-handlebars').template(#{Barber::Precompiler.compile(string)});"
end
def compile_handlebars(string, input = nil)
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"requirejs('discourse-common/lib/raw-handlebars').compile(#{indent(string).inspect});"
end
end
end
end
end
class Ember::Handlebars::Template
prepend Discourse::Ember::Handlebars::Helper
def path_for(module_name, config)
# We need this for backward-compatibility reasons.
# Plugins may not have an app subdirectory.
template_path(module_name, config).inspect.gsub('discourse/templates/', '')
end
def global_template_target(namespace, module_name, config)
"#{namespace}[#{path_for(module_name, config)}]"
end
def call(input)
data = input[:data]
filename = input[:filename]
raw = handlebars?(filename)
if raw
template = data
else
template = mustache_to_handlebars(filename, data)
end
template_name = input[:name]
module_name =
case config.output_type
when :amd
amd_template_target(config.amd_namespace, template_name)
when :global
template_path(template_name, config)
else
raise "Unsupported `output_type`: #{config.output_type}"
end
meta = meta_supported? ? { moduleName: module_name } : false
if config.precompile
if raw
template = precompile_handlebars(template, input)
else
template = precompile_ember_handlebars(template, config.ember_template, input, meta)
end
else
if raw
template = compile_handlebars(data)
else
template = compile_ember_handlebars(template, config.ember_template, meta)
end
end
case config.output_type
when :amd
"define('#{module_name}', ['exports'], function(__exports__){ __exports__['default'] = #{template} });"
when :global
if raw
return <<~JS
var __t = #{template};
requirejs('discourse-common/lib/raw-templates').addRawTemplate(#{path_for(template_name, config)}, __t);
JS
end
target = global_template_target('Ember.TEMPLATES', template_name, config)
"#{target} = #{template}\n"
else
raise "Unsupported `output_type`: #{config.output_type}"
end
end
# FIXME: Previously, ember-handlebars-templates uses the logical path which incorrectly
# returned paths with the `.raw` extension and our code is depending on the `.raw`
# to find the right template to use.
def actual_name(input)
actual_name = input[:name]
input[:filename].include?('.raw') ? "#{actual_name}.raw" : actual_name
end
private
def handlebars?(filename)
filename.to_s =~ /\.raw\.(handlebars|hjs|hbs)/ || filename.to_s.ends_with?(".hbr") || filename.to_s.ends_with?(".hbr.erb")
end
end