Pygments (http://pygments.org/) option added to source code highlight filter.

Based on Pygments source code filter written by David Hajage (http://groups.google.com/group/asciidoc/browse_thread/thread/d8d042f5a3021369/8934ebbb8cb7144b).
Define the 'pygments' attribute use Pygments instead of GNU Source Highlight.

4 files changed, 90 insertions, 6 deletions

diff --git a/doc/source-highlight-filter.txt b/doc/source-highlight-filter.txt
index aded42e..7a0ab0d 100644
--- a/doc/source-highlight-filter.txt
+++ b/doc/source-highlight-filter.txt
@@ -4,9 +4,15 @@ Source Code Highlight Filter
 The AsciiDoc distribution includes a source code syntax highlight
 filter (`source-highlight-filter.conf`). It uses
 http://www.gnu.org/software/src-highlite/[GNU source-highlight] to
-highlight HTML outputs; DocBook outputs are highlighted by toolchains
-that have `programlisting` element highlight support, for example
-'dblatex'.
+highlight HTML outputs. You also have the option of using the
+http://pygments.org/[Pygments] syntax highlighter for 'xhtm11' outputs
+-- define an AsciiDoc attribute named 'pygments' to switch to Pygments
+(you will also need to have Pygments installed and the 'pygmentize'
+command in your PATH.  You can customize Pygments CSS styles by
+editing `./stylesheets/pygments.css`.
+
+DocBook outputs are highlighted by toolchains that have
+`programlisting` element highlight support, for example 'dblatex'.
 
 TIP: If the source 'language' attribute has been set (using an
 'AttributeEntry' or from the command-line) you don't have to specify
diff --git a/filters/source/source-highlight-filter.conf b/filters/source/source-highlight-filter.conf
index 0d4da7e..f1d92e4 100644
--- a/filters/source/source-highlight-filter.conf
+++ b/filters/source/source-highlight-filter.conf
@@ -4,9 +4,15 @@
 # Documented in source-hightlight-filter.txt in AsciiDoc distribution
 # ./examples/website/ directory.
 #
-# HTML outputs require GNU source-highlight
+# HTML outputs require GNU source-highlight (xhtml11, html4 outputs)
 # http://www.gnu.org/software/src-highlite/source-highlight.html
 #
+# or Pygments (xhtml11 outputs):
+# http://pygments.org/
+#
+# GNU source-hightlight is default, define the 'pygments' attribute to  use
+# Pygments.
+#
 
 ########################
 # Source block templates
@@ -53,7 +59,8 @@ source-style=template="source-highlight-block",presubs=(),postsubs=("callouts",)
 endif::basebackend-html[]
 
 ifdef::backend-xhtml11[]
-source-style=template="source-highlight-block",presubs=(),postsubs=("callouts",),posattrs=("style","language","src_numbered","src_tab"),filter="source-highlight -f xhtml -s {language} {src_numbered?--line-number} {src_tab?--tab={src_tab}}"
+ifndef::pygments[source-style=template="source-highlight-block",presubs=(),postsubs=("callouts",),posattrs=("style","language","src_numbered","src_tab"),filter="source-highlight -f xhtml -s {language} {src_numbered?--line-number} {src_tab?--tab={src_tab}}"]
+ifdef::pygments[source-style=template="source-highlight-block",presubs=(),postsubs=("callouts",),posattrs=("style","language","src_numbered"),filter="pygmentize -f html -l {language} {src_numbered?-O linenos=table}"]
 endif::backend-xhtml11[]
 
 ifdef::backend-docbook[]
@@ -69,7 +76,8 @@ source-style=template="source-highlight-block",presubs=(),postsubs=("callouts",)
 endif::basebackend-html[]
 
 ifdef::backend-xhtml11[]
-source-style=template="source-highlight-block",presubs=(),postsubs=("callouts",),posattrs=("style","language","src_numbered","src_tab"),filter="source-highlight -f xhtml -s {language} {src_numbered?--line-number} {src_tab?--tab={src_tab}}"
+ifndef::pygments[source-style=template="source-highlight-block",presubs=(),postsubs=("callouts",),posattrs=("style","language","src_numbered","src_tab"),filter="source-highlight -f xhtml -s {language} {src_numbered?--line-number} {src_tab?--tab={src_tab}}"]
+ifdef::pygments[source-style=template="source-highlight-block",presubs=(),postsubs=("callouts",),posattrs=("style","language","src_numbered"),filter="pygmentize -f html -l {language} {src_numbered?-O linenos=table}"]
 endif::backend-xhtml11[]
 
 ifdef::backend-docbook[]
diff --git a/stylesheets/pygments.css b/stylesheets/pygments.css
new file mode 100644
index 0000000..9ca3659
--- /dev/null
+++ b/stylesheets/pygments.css
@@ -0,0 +1,66 @@
+/* 
+  pygmentize filter
+*/
+.highlight .hll { background-color: #ffffcc }
+.highlight  { background: #f4f4f4; }
+.highlight .c { color: #008800; font-style: italic } /* Comment */
+.highlight .err { border: 1px solid #FF0000 } /* Error */
+.highlight .k { color: #AA22FF; font-weight: bold } /* Keyword */
+.highlight .o { color: #666666 } /* Operator */
+.highlight .cm { color: #008800; font-style: italic } /* Comment.Multiline */
+.highlight .cp { color: #008800 } /* Comment.Preproc */
+.highlight .c1 { color: #008800; font-style: italic } /* Comment.Single */
+.highlight .cs { color: #008800; font-weight: bold } /* Comment.Special */
+.highlight .gd { color: #A00000 } /* Generic.Deleted */
+.highlight .ge { font-style: italic } /* Generic.Emph */
+.highlight .gr { color: #FF0000 } /* Generic.Error */
+.highlight .gh { color: #000080; font-weight: bold } /* Generic.Heading */
+.highlight .gi { color: #00A000 } /* Generic.Inserted */
+.highlight .go { color: #808080 } /* Generic.Output */
+.highlight .gp { color: #000080; font-weight: bold } /* Generic.Prompt */
+.highlight .gs { font-weight: bold } /* Generic.Strong */
+.highlight .gu { color: #800080; font-weight: bold } /* Generic.Subheading */
+.highlight .gt { color: #0040D0 } /* Generic.Traceback */
+.highlight .kc { color: #AA22FF; font-weight: bold } /* Keyword.Constant */
+.highlight .kd { color: #AA22FF; font-weight: bold } /* Keyword.Declaration */
+.highlight .kn { color: #AA22FF; font-weight: bold } /* Keyword.Namespace */
+.highlight .kp { color: #AA22FF } /* Keyword.Pseudo */
+.highlight .kr { color: #AA22FF; font-weight: bold } /* Keyword.Reserved */
+.highlight .kt { color: #00BB00; font-weight: bold } /* Keyword.Type */
+.highlight .m { color: #666666 } /* Literal.Number */
+.highlight .s { color: #BB4444 } /* Literal.String */
+.highlight .na { color: #BB4444 } /* Name.Attribute */
+.highlight .nb { color: #AA22FF } /* Name.Builtin */
+.highlight .nc { color: #0000FF } /* Name.Class */
+.highlight .no { color: #880000 } /* Name.Constant */
+.highlight .nd { color: #AA22FF } /* Name.Decorator */
+.highlight .ni { color: #999999; font-weight: bold } /* Name.Entity */
+.highlight .ne { color: #D2413A; font-weight: bold } /* Name.Exception */
+.highlight .nf { color: #00A000 } /* Name.Function */
+.highlight .nl { color: #A0A000 } /* Name.Label */
+.highlight .nn { color: #0000FF; font-weight: bold } /* Name.Namespace */
+.highlight .nt { color: #008000; font-weight: bold } /* Name.Tag */
+.highlight .nv { color: #B8860B } /* Name.Variable */
+.highlight .ow { color: #AA22FF; font-weight: bold } /* Operator.Word */
+.highlight .w { color: #bbbbbb } /* Text.Whitespace */
+.highlight .mf { color: #666666 } /* Literal.Number.Float */
+.highlight .mh { color: #666666 } /* Literal.Number.Hex */
+.highlight .mi { color: #666666 } /* Literal.Number.Integer */
+.highlight .mo { color: #666666 } /* Literal.Number.Oct */
+.highlight .sb { color: #BB4444 } /* Literal.String.Backtick */
+.highlight .sc { color: #BB4444 } /* Literal.String.Char */
+.highlight .sd { color: #BB4444; font-style: italic } /* Literal.String.Doc */
+.highlight .s2 { color: #BB4444 } /* Literal.String.Double */
+.highlight .se { color: #BB6622; font-weight: bold } /* Literal.String.Escape */
+.highlight .sh { color: #BB4444 } /* Literal.String.Heredoc */
+.highlight .si { color: #BB6688; font-weight: bold } /* Literal.String.Interpol */
+.highlight .sx { color: #008000 } /* Literal.String.Other */
+.highlight .sr { color: #BB6688 } /* Literal.String.Regex */
+.highlight .s1 { color: #BB4444 } /* Literal.String.Single */
+.highlight .ss { color: #B8860B } /* Literal.String.Symbol */
+.highlight .bp { color: #AA22FF } /* Name.Builtin.Pseudo */
+.highlight .vc { color: #B8860B } /* Name.Variable.Class */
+.highlight .vg { color: #B8860B } /* Name.Variable.Global */
+.highlight .vi { color: #B8860B } /* Name.Variable.Instance */
+.highlight .il { color: #666666 } /* Literal.Number.Integer.Long */
+
diff --git a/xhtml11.conf b/xhtml11.conf
index cd4acfa..2b29aa3 100644
--- a/xhtml11.conf
+++ b/xhtml11.conf
@@ -496,6 +496,7 @@ ifdef::quirks[]
 <link rel="stylesheet" href="{stylesdir=.}/{theme={backend}}-quirks.css" type="text/css" />

 endif::quirks[]

 <link rel="stylesheet" href="{stylesdir=.}/{stylesheet}" type="text/css" />

+ifdef::pygments[<link rel="stylesheet" href="{stylesdir=.}/pygments.css" type="text/css" />]

 endif::linkcss[]

 ifndef::linkcss[]

 <style type="text/css">

@@ -507,6 +508,9 @@ ifdef::quirks[]
 include1::{stylesdir=./stylesheets}/{theme={backend}}-quirks.css[]

 endif::quirks[]

 include1::{stylesheet}[]

+ifdef::pygments[]

+include1::{stylesdir=./stylesheets}/pygments.css[]

+endif::pygments[]

 </style>

 endif::linkcss[]

 ifndef::disable-javascript[]