Add script to merge boards manager packages

package/merge_packages.py

@@ -0,0 +1,60 @@
+#!/usr/bin/env python
+# This script merges two Arduino Board Manager package json files.
+# Usage:
+#   python merge_packages.py package_esp8266com_index.json version/new/package_esp8266com_index.json
+# Written by Ivan Grokhotkov, 2015
+#
+from __future__ import print_function
+import json
+import sys
+
+def load_package(filename):
+    pkg = json.load(open(filename))['packages'][0]
+    print("Loaded package {0} from {1}".format(pkg['name'], filename))
+    print("{0} platform(s), {1} tools".format(len(pkg['platforms']), len(pkg['tools'])))
+    return pkg
+
+def merge_objects(versions, obj):
+    for o in obj:
+        name = o['name'].encode('ascii')
+        ver = o['version'].encode('ascii')
+        if not name in versions:
+            print("found new object, {0}".format(name))
+            versions[name] = {}
+        if not ver in versions[name]:
+            print("found new version {0} for object {1}".format(ver, name))
+            versions[name][ver] = o
+    return versions
+
+
+def main(args):
+    if len(args) < 3:
+        print("Usage: {0} <package1> <package2>".format(args[0]))
+        return 1
+
+    tools = {}
+    platforms = {}
+    pkg1 = load_package(args[1])
+    tools = merge_objects(tools, pkg1['tools']);
+    platforms = merge_objects(platforms, pkg1['platforms']);
+    pkg2 = load_package(args[2])
+    tools = merge_objects(tools, pkg2['tools']);
+    platforms = merge_objects(platforms, pkg2['platforms']);
+
+    pkg1['tools'] = []
+    pkg1['platforms'] = []
+
+    for name in tools:
+        for version in tools[name]:
+            print("Adding tool {0}-{1}".format(name, version))
+            pkg1['tools'].append(tools[name][version])
+
+    for name in platforms:
+        for version in platforms[name]:
+            print("Adding platform {0}-{1}".format(name, version))
+            pkg1['platforms'].append(platforms[name][version])
+
+    json.dump({'packages':[pkg1]}, sys.stdout, indent=2)
+
+if __name__ == '__main__':
+    sys.exit(main(sys.argv))