Class: Inverter::Parser

Inherits:
Object
  • Object
show all
Includes:
RenderAnywhere
Defined in:
lib/inverter/parser.rb

Constant Summary collapse

NAME_START_DELIMITER = 
"<!--//"
NAME_END_DELIMITER = 
"//-->"
BLOCK_START_DELIMITER = 
"<!--["
BLOCK_NAME_DELIMITER = 
"]-->"
BLOCK_END_DELIMITER = 
"<!--END-->"

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(template_name) ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/inverter/parser.rb', line 14

def initialize(template_name)
  @template_name = template_name
end

Class Method Details

.map_blocks_for(content) ⇒ Object

returns a hash with content blocks name and [start, end] positions to be replaced with updated content e.g: { “header”=>[32, 178], “body”=>[206, 352] }



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# File 'lib/inverter/parser.rb', line 83

def self.map_blocks_for(content)
  map   = {}
  delta = 0

  s = content.index(BLOCK_START_DELIMITER)
  e = content.index(BLOCK_END_DELIMITER)

  while s && e
    s += BLOCK_START_DELIMITER.size

    n   = content[s..e-1].index(BLOCK_NAME_DELIMITER)
    key = content[s..s+n-1].strip

    n += BLOCK_NAME_DELIMITER.size
    map[key] = [delta+s+n, delta+e-1]

    e += BLOCK_END_DELIMITER.size
    content = content[e..-1]
    delta  += e

    s = content.index(BLOCK_START_DELIMITER)
    e = content.index(BLOCK_END_DELIMITER)
  end

  return map
end

Instance Method Details

#parse ⇒ Object Also known as: blocks

parses rendered template and returns hash with block names and content to be editable



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# File 'lib/inverter/parser.rb', line 37

def parse
  result  = {}
  content = file_content

  s = content.index(BLOCK_START_DELIMITER)
  e = content.index(BLOCK_END_DELIMITER)

  while s && e
    s += BLOCK_START_DELIMITER.size
    block = content[s..e-1]

    key, value  = parse_block(block)
    result[key] = value

    e += BLOCK_END_DELIMITER.size
    content = content[e..-1]

    s = content.index(BLOCK_START_DELIMITER)
    e = content.index(BLOCK_END_DELIMITER)
  end

  return result
end

#parse_block(block) ⇒ Object 



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# File 'lib/inverter/parser.rb', line 62

def parse_block(block)
  n = block.index(BLOCK_NAME_DELIMITER)
  key = block[0..n-1].strip

  n += BLOCK_NAME_DELIMITER.size
  value = block[n..-1]

  begin
    html = render inline: value, layout: false
  rescue
    html = "Template block wasn't rendered cause of a template syntax error."
  end

  return key, html
end

#parse_name ⇒ Object Also known as: name

parse name from template



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# File 'lib/inverter/parser.rb', line 19

def parse_name
  name    = ''
  content = file_content

  s = content.index(NAME_START_DELIMITER)
  e = content.index(NAME_END_DELIMITER)

  unless s.nil?
    s += NAME_START_DELIMITER.size
    name = content[s..e-1].strip
  end

  return name
end