support Rouge

doc/config.yml.sample

@@ -172,9 +172,9 @@ secnolevel: 2
 # fontdir内から取り込まれる対象となるファイル拡張子。省略した場合は以下
 # font_ext: ["ttf", "woff", "otf"]
 
-# ソースコードハイライトを利用する (pygmentsには外部gemが必要)
+# ソースコードハイライトを利用する (rouge,pygmentsには外部gemが必要)
 # highlight:
-#   html: "pygments"
+#   html: "rouge"
 #   latex: "listings"
 
 # カタログファイル名を指定する

doc/config.yml.sample-simple

@@ -51,7 +51,7 @@ colophon: true
 ## Syntax Highlighting
 
 highlight:
-  html: "pygments"
+  html: "rouge"
   latex: "listings"
 
 ## for HTML

doc/sample.css

@@ -107,6 +107,220 @@ p.flushright {
     text-align: right;
 }
 
+/**
+ * from Rouge
+ */
+.highlight table td { padding: 5px; }
+.highlight table pre { margin: 0; }
+.highlight .cm {
+  color: #999988;
+  font-style: italic;
+}
+.highlight .cp {
+  color: #999999;
+  font-weight: bold;
+}
+.highlight .c1 {
+  color: #999988;
+  font-style: italic;
+}
+.highlight .cs {
+  color: #999999;
+  font-weight: bold;
+  font-style: italic;
+}
+.highlight .c, .highlight .cd {
+  color: #999988;
+  font-style: italic;
+}
+.highlight .err {
+  color: #a61717;
+  background-color: #e3d2d2;
+}
+.highlight .gd {
+  color: #000000;
+  background-color: #ffdddd;
+}
+.highlight .ge {
+  color: #000000;
+  font-style: italic;
+}
+.highlight .gr {
+  color: #aa0000;
+}
+.highlight .gh {
+  color: #999999;
+}
+.highlight .gi {
+  color: #000000;
+  background-color: #ddffdd;
+}
+.highlight .go {
+  color: #888888;
+}
+.highlight .gp {
+  color: #555555;
+}
+.highlight .gs {
+  font-weight: bold;
+}
+.highlight .gu {
+  color: #aaaaaa;
+}
+.highlight .gt {
+  color: #aa0000;
+}
+.highlight .kc {
+  color: #000000;
+  font-weight: bold;
+}
+.highlight .kd {
+  color: #000000;
+  font-weight: bold;
+}
+.highlight .kn {
+  color: #000000;
+  font-weight: bold;
+}
+.highlight .kp {
+  color: #000000;
+  font-weight: bold;
+}
+.highlight .kr {
+  color: #000000;
+  font-weight: bold;
+}
+.highlight .kt {
+  color: #445588;
+  font-weight: bold;
+}
+.highlight .k, .highlight .kv {
+  color: #000000;
+  font-weight: bold;
+}
+.highlight .mf {
+  color: #009999;
+}
+.highlight .mh {
+  color: #009999;
+}
+.highlight .il {
+  color: #009999;
+}
+.highlight .mi {
+  color: #009999;
+}
+.highlight .mo {
+  color: #009999;
+}
+.highlight .m, .highlight .mb, .highlight .mx {
+  color: #009999;
+}
+.highlight .sb {
+  color: #d14;
+}
+.highlight .sc {
+  color: #d14;
+}
+.highlight .sd {
+  color: #d14;
+}
+.highlight .s2 {
+  color: #d14;
+}
+.highlight .se {
+  color: #d14;
+}
+.highlight .sh {
+  color: #d14;
+}
+.highlight .si {
+  color: #d14;
+}
+.highlight .sx {
+  color: #d14;
+}
+.highlight .sr {
+  color: #009926;
+}
+.highlight .s1 {
+  color: #d14;
+}
+.highlight .ss {
+  color: #990073;
+}
+.highlight .s {
+  color: #d14;
+}
+.highlight .na {
+  color: #008080;
+}
+.highlight .bp {
+  color: #999999;
+}
+.highlight .nb {
+  color: #0086B3;
+}
+.highlight .nc {
+  color: #445588;
+  font-weight: bold;
+}
+.highlight .no {
+  color: #008080;
+}
+.highlight .nd {
+  color: #3c5d5d;
+  font-weight: bold;
+}
+.highlight .ni {
+  color: #800080;
+}
+.highlight .ne {
+  color: #990000;
+  font-weight: bold;
+}
+.highlight .nf {
+  color: #990000;
+  font-weight: bold;
+}
+.highlight .nl {
+  color: #990000;
+  font-weight: bold;
+}
+.highlight .nn {
+  color: #555555;
+}
+.highlight .nt {
+  color: #000080;
+}
+.highlight .vc {
+  color: #008080;
+}
+.highlight .vg {
+  color: #008080;
+}
+.highlight .vi {
+  color: #008080;
+}
+.highlight .nv {
+  color: #008080;
+}
+.highlight .ow {
+  color: #000000;
+  font-weight: bold;
+}
+.highlight .o {
+  color: #000000;
+  font-weight: bold;
+}
+.highlight .w {
+  color: #bbbbbb;
+}
+.highlight {
+  background-color: #f8f8f8;
+}
+.rouge-table { border-spacing: 0 }
+.rouge-gutter { text-align: right }
 
 /**
  * from EBPAJ EPUB 3 File Creation Guide sample style

lib/review/htmlbuilder.rb

@@ -450,6 +450,7 @@ def list_body(id, lines, lang)
       class_names = ["list"]
       lexer = lang || File.extname(id).gsub(/\./, '')
       class_names.push("language-#{lexer}") unless lexer.blank?
+      class_names.push("highlight") if highlight?
       print %Q[<pre class="#{class_names.join(" ")}">]
       body = lines.inject(''){|i, j| i + detab(j) + "\n"}
       puts highlight(:body => body, :lexer => lexer, :format => 'html')
@@ -494,11 +495,12 @@ def listnum_body(lines, lang)
         body = lines.inject(''){|i, j| i + detab(j) + "\n"}
         lexer = lang
         first_line_number = get_line_num
-        puts highlight(:body => body, :lexer => lexer, :format => 'html',
-                       :options => {:linenos => 'inline', :nowrap => false, :linenostart => first_line_number})
+        puts highlight(:body => body, :lexer => lexer, :format => 'html', :linenum => true,
+                       :options => {:linenostart => first_line_number})
       else
         class_names = ["list"]
         class_names.push("language-#{lang}") unless lang.blank?
+        class_names.push("highlight") if highlight?
         print %Q[<pre class="#{class_names.join(" ")}">]
         first_line_num = get_line_num
         lines.each_with_index do |line, i|
@@ -515,6 +517,7 @@ def emlist(lines, caption = nil, lang = nil)
       end
       class_names = ["emlist"]
       class_names.push("language-#{lang}") unless lang.blank?
+      class_names.push("highlight") if highlight?
       print %Q[<pre class="#{class_names.join(" ")}">]
       body = lines.inject(''){|i, j| i + detab(j) + "\n"}
       lexer = lang
@@ -533,11 +536,12 @@ def emlistnum(lines, caption = nil, lang = nil)
         body = lines.inject(''){|i, j| i + detab(j) + "\n"}
         lexer = lang
         first_line_number = get_line_num
-        puts highlight(:body => body, :lexer => lexer, :format => 'html',
-                       :options => {:linenos => 'inline', :nowrap => false, :linenostart => first_line_number})
+        puts highlight(:body => body, :lexer => lexer, :format => 'html', :linenum => true,
+                       :options => {:linenostart => first_line_number})
       else
         class_names = ["emlist"]
         class_names.push("language-#{lang}") unless lang.blank?
+        class_names.push("highlight") if highlight?
         print %Q[<pre class="#{class_names.join(" ")}">]
         first_line_num = get_line_num
         lines.each_with_index do |line, i|

lib/review/htmlutils.rb

@@ -9,6 +9,7 @@
 #
 
 require 'cgi/util'
+require 'rouge'
 module ReVIEW
 
   module HTMLUtils
@@ -44,14 +45,25 @@ def escape_comment(str)
 
     def highlight?
       @book.config["highlight"] &&
-        @book.config["highlight"]["html"] == "pygments"
+        @book.config["highlight"]["html"]
     end
 
     def highlight(ops)
       if @book.config["pygments"].present?
         raise ReVIEW::ConfigError, "'pygments:' in config.yml is obsoleted."
       end
+      return ops[:body].to_s if !highlight?
 
+      if @book.config["highlight"]["html"] == "pygments"
+        highlight_pygments(ops)
+      elsif @book.config["highlight"]["html"] == "rouge"
+        highlight_rouge(ops)
+      else
+        raise ReVIEW::ConfigError, "unknown highlight method #{@book.config["highlight"]["html"]} in config.yml."
+      end
+    end
+
+    def highlight_pygments(ops)
       body = ops[:body] || ''
       if @book.config["highlight"] && @book.config["highlight"]["lang"]
         lexer = @book.config["highlight"]["lang"] # default setting
@@ -61,10 +73,13 @@ def highlight(ops)
       lexer = ops[:lexer] if ops[:lexer].present?
       format = ops[:format] || ''
       options = {:nowrap => true, :noclasses => true}
+      if ops[:linenum]
+        options[:nowrap] = false
+        options[:linenos] = 'inline'
+      end
       if ops[:options] && ops[:options].kind_of?(Hash)
         options.merge!(ops[:options])
       end
-      return body if !highlight?
 
       begin
         require 'pygments'
@@ -81,6 +96,37 @@ def highlight(ops)
       end
     end
 
+    def highlight_rouge(ops)
+      body = ops[:body] || ''
+      if ops[:lexer].present?
+        lexer = ops[:lexer]
+      elsif @book.config["highlight"] && @book.config["highlight"]["lang"]
+        lexer = @book.config["highlight"]["lang"] # default setting
+      else
+        lexer = 'text'
+      end
+      format = ops[:format] || ''
+
+      first_line_num = 1 ## default
+      if ops[:options] && ops[:options][:linenostart]
+        first_line_num = ops[:options][:linenostart]
+      end
+
+      lexer = Rouge::Lexer.find(lexer)
+      raise "unknown lexer #{lexer}" unless lexer
+
+      formatter = Rouge::Formatters::HTML.new(:css_class => 'highlight')
+      if ops[:linenum]
+        formatter = Rouge::Formatters::HTMLTable.new(formatter,
+                                                     :table_class => 'highlight rouge-table',
+                                                     :start_line => first_line_num)
+      end
+      raise "unknown formatter #{formatter}" unless formatter
+
+      text = unescape_html(body)
+      formatter.format(lexer.lex(text))
+    end
+
     def normalize_id(id)
       if id =~ /\A[a-z][a-z0-9_.-]*\Z/i
         return id

review.gemspec

@@ -24,6 +24,7 @@ Gem::Specification.new do |gem|
   gem.require_paths = ["lib"]
 
   gem.add_dependency("rubyzip")
+  gem.add_dependency("rouge")
   gem.add_development_dependency("rake")
   gem.add_development_dependency("test-unit")
   gem.add_development_dependency("pygments.rb")