1 files changed, 61 insertions, 0 deletions
diff --git a/pygments/plugin.py b/pygments/plugin.py
new file mode 100644
index 00000000..7cbb9f1c
--- /dev/null
+++ b/pygments/plugin.py
@@ -0,0 +1,61 @@
+# -*- coding: utf-8 -*-
+"""
+    pygments.plugin
+    ~~~~~~~~~~~~~~~
+
+    Pygments setuptools plugin interface. The methods defined
+    here also work if setuptools isn't installed but they just
+    return nothing.
+
+    lexer plugins::
+
+        [pygments.lexers]
+        yourlexer = yourmodule:YourLexer
+
+    formatter plugins::
+
+        [pygments.formatters]
+        yourformatter = yourformatter:YourFormatter
+        /.ext = yourformatter:YourFormatter
+
+    As you can see, you can define extensions for the formatter
+    with a leading slash.
+
+    syntax plugins::
+
+        [pygments.styles]
+        yourstyle = yourstyle:YourStyle
+
+
+    :coypright: 2006 by Armin Ronacher.
+    :license: GNU LGPG; see LICENSE for more details.
+"""
+try:
+    import pkg_resources
+except ImportError:
+    pkg_resources = None
+
+LEXER_ENTRY_POINT = 'pygments.lexers'
+FORMATTER_ENTRY_POINT = 'pygments.formatters'
+STYLE_ENTRY_POINT = 'pygments.styles'
+
+
+def find_plugin_lexers():
+    if pkg_resources is None:
+        return
+    for entrypoint in pkg_resources.iter_entry_points(LEXER_ENTRY_POINT):
+        yield entrypoint.load()
+
+
+def find_plugin_formatters():
+    if pkg_resources is None:
+        return
+    for entrypoint in pkg_resources.iter_entry_points(FORMATTER_ENTRY_POINT):
+        yield entrypoint.name, entrypoint.load()
+
+
+def find_plugin_styles():
+    if pkg_resources is None:
+        return
+    for entrypoint in pkg_resources.iter_entry_points(STYLE_ENTRY_POINT):
+        yield entrypoint.name, entrypoint.load()