Handle broken JSON files

platformio/builder/tools/piolib.py

@@ -27,7 +27,7 @@ from os.path import (basename, commonprefix, dirname, isdir, isfile, join,
 import SCons.Scanner
 from SCons.Script import ARGUMENTS, COMMAND_LINE_TARGETS, DefaultEnvironment
 
-from platformio import util
+from platformio import exception, util
 from platformio.builder.tools import platformio as piotool
 from platformio.managers.lib import LibraryManager
 from platformio.managers.package import PackageManager
@@ -777,7 +777,7 @@ def GetLibBuilders(env):  # pylint: disable=too-many-branches
             try:
                 lb = LibBuilderFactory.new(
                     env, join(libs_dir, item), verbose=verbose)
-            except ValueError:
+            except exception.InvalidJSONFile:
                 if verbose:
                     sys.stderr.write("Skip library with broken manifest: %s\n"
                                      % join(libs_dir, item))

platformio/exception.py

@@ -207,6 +207,11 @@ class InvalidSettingValue(PlatformioException):
     MESSAGE = "Invalid value '{0}' for the setting '{1}'"
 
 
+class InvalidJSONFile(PlatformioException):
+
+    MESSAGE = "Could not load broken JSON: {0}"
+
+
 class CIBuildEnvsEmpty(PlatformioException):
 
     MESSAGE = ("Can't find PlatformIO build environments.\n"

platformio/util.py

@@ -169,8 +169,7 @@ def load_json(file_path):
         with open(file_path, "r") as f:
             return json.load(f)
     except ValueError:
-        raise exception.PlatformioException(
+        raise exception.InvalidJSONFile(file_path)
-            "Could not load broken JSON: %s" % file_path)
 
 
 def get_systype():