From 01119626a241ef35f28875fb9aa7f5bdd3a8bc0c Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Tue, 5 Oct 2010 22:46:59 +0000
Subject: Add lv2includegen tool to generate include directory trees for
 including headers based on extension URIs.

---
 lv2includegen/lv2includegen.py | 85 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100755 lv2includegen/lv2includegen.py

diff --git a/lv2includegen/lv2includegen.py b/lv2includegen/lv2includegen.py
new file mode 100755
index 0000000..333bff2
--- /dev/null
+++ b/lv2includegen/lv2includegen.py
@@ -0,0 +1,85 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+#
+# lv2includegen, a tool to generate directory trees for including
+# extension headers from source code.
+
+__authors__ = 'David Robillard'
+__license   = 'GNU GPL v3 or later <http://www.gnu.org/licenses/gpl.html>'
+__contact__ = 'devel@lists.lv2plug.in'
+__date__    = '2010-10-05'
+
+import errno
+import glob
+import os
+import sys
+
+import RDF
+
+rdf  = RDF.NS('http://www.w3.org/1999/02/22-rdf-syntax-ns#')
+lv2  = RDF.NS('http://lv2plug.in/ns/lv2core#')
+
+def lv2_path():
+    "Return the LV2 search path (LV2_PATH)."
+    if 'LV2_PATH' in os.environ:
+        return os.environ['LV2_PATH']
+    else:
+        ret = '/usr/lib/lv2' + os.pathsep + '/usr/local/lib/lv2'
+        print 'LV2_PATH unset, using default ' + ret
+        return ret
+
+def lv2_bundles(search_path):
+    "Return a list of all LV2 bundles found in a search path."
+    dirs = search_path.split(os.pathsep)
+    bundles = []
+    for dir in dirs:
+        bundles += glob.glob(os.path.join(dir, '*.lv2'))
+    return bundles
+
+def usage():
+    script = os.path.basename(sys.argv[0])
+    print """Usage: 
+    %s OUTDIR
+
+        OUTDIR : Directory to build include tree
+
+Example:
+    %s /usr/local/include/lv2
+""" % (script, script)
+    sys.exit(-1)
+
+def mkdir_p(path):
+    try:
+        os.makedirs(path)
+    except OSError as e:
+        if e.errno == errno.EEXIST:
+            pass
+        else:
+            raise
+
+if __name__ == "__main__":
+    args = sys.argv[1:]
+    if len(args) != 1:
+        usage()
+        exit(1)
+
+    outdir = args[0]
+    print "Building LV2 include tree at", outdir
+    
+    for bundle in lv2_bundles(lv2_path()):
+        # Load manifest into model
+        manifest = RDF.Model()
+        parser = RDF.Parser(name="guess")
+        parser.parse_into_model(manifest, 'file://' + os.path.join(bundle, 'manifest.ttl'))
+
+        # Query extension URI
+        results = manifest.find_statements(RDF.Statement(None, rdf.type, lv2.Specification))
+        for r in results:
+            ext_uri        = str(r.subject.uri)
+            ext_path       = os.path.normpath(ext_uri[ext_uri.find(':') + 1:].lstrip('/'))
+            ext_parent_dir = os.path.join(outdir, os.path.dirname(ext_path))
+            ext_dir        = os.path.basename(ext_path)
+
+            # Make symlink to bundle directory
+            mkdir_p(ext_parent_dir)
+            os.symlink(bundle, os.path.join(ext_parent_dir, ext_dir))
-- 
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