class Haml::HTML::ERB
that is, everything that should be indented beneath the previous silent or loud tag.
‘<haml:block> … </haml:block>` will wrap the entire contents of the block -
Finally, if either of these opens a Ruby block,
`<%= … %>` is converted into `<haml:loud> … </haml:loud>`.
`<% … %>` is converted into `<haml:silent> … </haml:silent>`.
The ERB tags are converted to HTML tags in the following way.
to figure out whether a given chunk of Ruby code starts a block or not.
and [ruby_parser](parsetree.rubyforge.org/)’s Ruby knowledge
to parse the ERB in a reliable way,
Uses [Erubis](www.kuwata-lab.com/erubis)‘s extensible parsing powers
for the {Haml::HTML} Hpricot-based parser to understand.
A class for converting ERB code into a format that’s easier
def self.compile(template)
- See: Haml::HTML::ERB -
Returns:
-
(String)
- The output document
Parameters:
-
template
(String
) -- The ERB template
def self.compile(template) new(template).src end
def add_expr_debug(src, code)
def add_expr_debug(src, code) raise Haml::Error.new("html2haml doesn't support debugging expressions.") end
def add_expr_literal(src, code)
-
code
(String
) -- The Ruby expression to add to the buffer -
src
(String
) -- The source buffer
def add_expr_literal(src, code) src << '<haml:loud>' << h(code) << '</haml:loud>' src << '<haml:block>' if block_opener?(code) end
def add_postamble(src); end
def add_postamble(src); end
def add_preamble(src); end
def add_preamble(src); end
def add_stmt(src, code)
-
code
(String
) -- The Ruby statement to add to the buffer -
src
(String
) -- The source buffer
def add_stmt(src, code) src << '</haml:block>' if block_closer?(code) || mid_block?(code) src << '<haml:silent>' << h(code) << '</haml:silent>' unless code.strip == "end" src << '<haml:block>' if block_opener?(code) || mid_block?(code) end
def add_text(src, text)
-
text
(String
) -- The raw text to add to the buffer -
src
(String
) -- The source buffer
def add_text(src, text) src << text end
def block_closer?(code)
-
(Boolean)
-
Parameters:
-
code
(String
) -- Ruby code to check
def block_closer?(code) valid_ruby?("begin\n" + code) end
def block_opener?(code)
-
(Boolean)
-
Parameters:
-
code
(String
) -- Ruby code to check
def block_opener?(code) valid_ruby?(code + "\nend") || valid_ruby?(code + "\nwhen foo\nend") end
def escaped_expr(code)
def escaped_expr(code) raise Haml::Error.new("html2haml doesn't support escaped expressions.") end
def h(text)
-
(String)
- The escaped text
Parameters:
-
text
(String
) -- The text to escape
def h(text) CGI.escapeHTML(text) end
def mid_block?(code)
-
(Boolean)
-
Parameters:
-
code
(String
) -- Ruby code to check
def mid_block?(code) return if valid_ruby?(code) valid_ruby?("if foo\n#{code}\nend") || # else, elsif valid_ruby?("begin\n#{code}\nend") || # rescue, ensure valid_ruby?("case foo\n#{code}\nend") # when end
def valid_ruby?(code)
-
(Boolean)
-
Parameters:
-
code
(String
) -- Ruby code to check
def valid_ruby?(code) RubyParser.new.parse(code) rescue Racc::ParseError false end