[tools] Add package.json as building script

tools/building.py

@@ -595,6 +595,11 @@ def GlobSubDir(sub_dir, ext_name):
         dst.append(os.path.relpath(item, sub_dir))
     return dst
 
+def PackageSConscript(package):
+    from package import BuildPackage
+
+    return BuildPackage(package)
+
 def file_path_exist(path, *args):
     return os.path.exists(os.path.join(path, *args))
 

tools/package.py

@@ -0,0 +1,74 @@
+#
+# File      : package.py
+# This file is part of RT-Thread RTOS
+# COPYRIGHT (C) 2006 - 2015, RT-Thread Development Team
+#
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License along
+#  with this program; if not, write to the Free Software Foundation, Inc.,
+#  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Change Logs:
+# Date           Author       Notes
+# 2015-04-10     Bernard      First version
+#
+
+# this script is used to build group with package.json instead of SConscript
+import os
+from building import *
+
+def ExtendPackageVar(package, var):
+    v = []
+    if not package.has_key(var):
+        return v
+
+    for item in package[var]:
+        v = v + [item]
+
+    return v
+
+def BuildPackage(package):
+    import json
+    f = file(package)
+    package_json = f.read()
+
+    # get package.json path
+    cwd = os.path.dirname(package)
+
+    package = json.loads(package_json)
+
+    # check package name 
+    if not package.has_key('name'):
+        return []
+
+    # get depends
+    depend = ExtendPackageVar(package, 'depends')
+
+    src = []
+    if package.has_key('source_files'):
+        for src_file in package['source_files']:
+            src_file = os.path.join(cwd, src_file)
+            src += Glob(src_file)
+
+    CPPPATH = []
+    if package.has_key('CPPPATH'):
+        for path in package['CPPPATH']:
+            if path.startswith('/') and os.path.isdir(path):
+                CPPPATH = CPPPATH + [path]
+            else:
+                CPPPATH = CPPPATH + [os.path.join(cwd, path)]
+
+    CPPDEFINES = ExtendPackageVar(package, 'CPPDEFINES')
+
+    objs = DefineGroup(package['name'], src, depend = depend, CPPPATH = CPPPATH, CPPDEFINES = CPPDEFINES)
+
+    return objs