basic converter which supports '<% ... %>' notation.
DEFAULT_REGEXP = /(.*?)(^[ t]*)?<%(=+|#)?(.*?)-?%>([ t]*r?n)?/m DEFAULT_REGEXP = /(^[ t]*)?<%(=+|#)?(.*?)-?%>([ t]*r?n)?/m DEFAULT_REGEXP = /<%(=+|#)?(.*?)-?%>([ t]*r?n)?/m
return regexp of pattern to parse eRuby script
# File lib/erubis/converter.rb, line 112 def pattern_regexp(pattern) @prefix, @postfix = pattern.split() # '<% %>' => '<%', '%>' #return /(.*?)(^[ \t]*)?#{@prefix}(=+|\#)?(.*?)-?#{@postfix}([ \t]*\r?\n)?/m #return /(^[ \t]*)?#{@prefix}(=+|\#)?(.*?)-?#{@postfix}([ \t]*\r?\n)?/m return /#{@prefix}(=+|-|\#|%)?(.*?)([-=])?#{@postfix}([ \t]*\r?\n)?/ end
add expression code to src
# File lib/erubis/converter.rb, line 176 def add_expr(src, code, indicator) case indicator when '=' @escape ? add_expr_escaped(src, code) : add_expr_literal(src, code) when '==' @escape ? add_expr_literal(src, code) : add_expr_escaped(src, code) when '===' add_expr_debug(src, code) end end
# File lib/erubis/converter.rb, line 127 def convert_input(src, input) pat = @pattern regexp = pat.nil? || pat == '<% %>' ? DEFAULT_REGEXP : pattern_regexp(pat) pos = 0 is_bol = true # is beginning of line input.scan(regexp) do |indicator, code, tailch, rspace| match = Regexp.last_match() len = match.begin(0) - pos text = input[pos, len] pos = match.end(0) ch = indicator ? indicator[0] : nil lspace = ch == == ? nil : detect_spaces_at_bol(text, is_bol) is_bol = rspace ? true : false add_text(src, text) if text && !text.empty? ## * when '<%= %>', do nothing ## * when '<% %>' or '<%# %>', delete spaces iff only spaces are around '<% %>' if ch == == # <%= %> rspace = nil if tailch && !tailch.empty? add_text(src, lspace) if lspace add_expr(src, code, indicator) add_text(src, rspace) if rspace elsif ch == \#\ # <%# %> n = code.count("\n") + (rspace ? 1 : 0) if @trim && lspace && rspace add_stmt(src, "\n" * n) else add_text(src, lspace) if lspace add_stmt(src, "\n" * n) add_text(src, rspace) if rspace end elsif ch == %% # <%% %> s = "#{lspace}#{@prefix||='<%'}#{code}#{tailch}#{@postfix||='%>'}#{rspace}" add_text(src, s) else # <% %> if @trim && lspace && rspace add_stmt(src, "#{lspace}#{code}#{rspace}") else add_text(src, lspace) if lspace add_stmt(src, code) add_text(src, rspace) if rspace end end end #rest = $' || input # ruby1.8 rest = pos == 0 ? input : input[pos..-1] # ruby1.9 add_text(src, rest) end
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