1 files changed, 113 insertions, 0 deletions
diff --git a/lib/erubis/engine/ecpp.rb b/lib/erubis/engine/ecpp.rb
new file mode 100644
index 0000000..cb3b2c3
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+++ b/lib/erubis/engine/ecpp.rb
@@ -0,0 +1,113 @@
+##
+## $Release:$
+## $Copyright$
+##
+
+require 'erubis/engine'
+require 'erubis/enhancer'
+
+
+module Erubis
+
+
+  module CppGenerator
+    include Generator
+
+    def self.supported_properties()  # :nodoc:
+      return [
+              [:indent, '',       "indent spaces (ex. '  ')"],
+              [:bufvar, '_buf',   "buffer variable name"],
+            ]
+    end
+
+    def init_generator(properties={})
+      super
+      @escapefunc ||= "escape"
+      @indent = properties[:indent] || ''
+      @bufvar = properties[:bufvar] || '_buf'
+    end
+
+    def add_preamble(src)
+      src << "#line 1 \"#{self.filename}\"\n" if self.filename
+    end
+
+    def escape_text(text)
+      @@table_ ||= { "\r"=>"\\r", "\n"=>"\\n", "\t"=>"\\t", '"'=>'\\"', "\\"=>"\\\\" }
+      text.gsub!(/[\r\n\t"\\]/) { |m| @@table_[m] }
+      return text
+    end
+
+    def escaped_expr(code)
+      return "#{@escapefunc}(#{code.strip})"
+    end
+
+    def add_text(src, text)
+      return if text.empty?
+      src << (src.empty? || src[-1] == ?\n ? @indent : ' ')
+      src << "_buf << "
+      i = 0
+      text.each_line do |line|
+        src << "\n" << @indent << "        " if i > 0
+        i += 1
+        src << '"' << escape_text(line) << '"'
+      end
+      src << ";"   #<< (text[-1] == ?\n ? "\n" : "")
+      src << "\n" if text[-1] == ?\n
+    end
+
+    def add_stmt(src, code)
+      src << code
+    end
+
+    def add_expr_literal(src, code)
+      src << @indent if src.empty? || src[-1] == ?\n
+      src << " _buf << (" << code.strip << ");"
+    end
+
+    def add_expr_escaped(src, code)
+      src << @indent if src.empty? || src[-1] == ?\n
+      src << ' ' << escaped_expr(code) << ';'
+    end
+
+    def add_expr_debug(src, code)
+      code.strip!
+      src << @indent if src.empty? || src[-1] == ?\n
+      src << " std::cerr << \"*** debug: #{code.gsub(/(")/, '\\\&')}=\" << (#{code});"
+    end
+
+    def add_postamble(src)
+      # empty
+    end
+
+  end
+
+
+  ##
+  ## engine for C
+  ##
+  class Ecpp < Basic::Engine
+    include CppGenerator
+  end
+
+
+  class EscapedEcpp < Ecpp
+    include EscapeEnhancer
+  end
+
+
+  #class XmlEcpp < Ecpp
+  #  include EscapeEnhancer
+  #end
+
+  class PI::Ecpp < PI::Engine
+    include CppGenerator
+
+    def init_converter(properties={})
+      @pi = 'cpp'
+      super(properties)
+    end
+
+  end
+
+
+end