lib/popcorn/pop_templates.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Copyright 2017 Alexandre Terrasa <alexandre@moz-code.org>
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at
   8 #
   9 #     http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 # See the License for the specific language governing permissions and
  15 # limitations under the License.
  16
  17 module pop_templates
  18
  19 import popcorn::pop_handlers
  20 import template::macro
  21
  22 redef class HttpResponse
  23
  24         # Render the TemplateString `tpl` with `values` and write it as html.
  25         fun template(tpl: nullable TemplateString, values: nullable Map[String, nullable Writable], status: nullable Int) do
  26                 if tpl != null and values != null then
  27                         for k, v in values do
  28                                 if not tpl.has_macro(k) or v == null then continue
  29                                 tpl.replace(k, v)
  30                         end
  31                 end
  32                 html(tpl, status)
  33         end
  34
  35         # Render `file` as a TemplateString with `values` and write it as html.
  36         fun template_string(tpl_string: nullable String, values: nullable Map[String, nullable Writable], status: nullable Int) do
  37                 var tpl = new TemplateString(tpl_string or else "")
  38                 template(tpl, values, status)
  39         end
  40
  41         # Render `file` as a TemplateString with `values` and write it as html.
  42         fun template_file(file: String, values: nullable Map[String, nullable Writable], status: nullable Int) do
  43                 var tpl = new TemplateString.from_file(file)
  44                 template(tpl, values, status)
  45         end
  46
  47         # Render `pug_string` with the command cli `pug` and use data from `json`
  48         #
  49         # See https://pugjs.org/api/getting-started.html for more details on pug.
  50         fun pug(pug_string: nullable String, json: nullable Serializable, status: nullable Int) do
  51                 var process
  52                 if json == null then
  53                         process = new ProcessDuplex("pug", "-D")
  54                 else
  55                         process = new ProcessDuplex("pug", "-D", "-O", json.to_json)
  56                 end
  57                 var out = process.write_and_read(pug_string or else "")
  58                 process.close
  59                 html(out, status)
  60         end
  61
  62         # Render `file` with the command cli `pug` and use data from `json`
  63         #
  64         # See https://pugjs.org/api/getting-started.html for more details on pug.
  65         fun pug_file(file: String, json: nullable Serializable, status: nullable Int) do
  66                 pug(file.to_path.read_all, json, status)
  67         end
  68 end