Added --as_json_array option.

Option instructs script to output all issues as JSON array instead of
ending each one with \0.

README.md

@@ -13,6 +13,7 @@ Reads Clang-Tidy output from `STDIN` and prints Code Climate JSON to `STDOUT`.
 * `-h, --help` - show help message and exit.
 * `-r PROJECT_ROOT, --project_root PROJECT_ROOT` - output file paths relative to `PROJECT_ROOT`. E.g. Clang-Tidy outputs '/home/user/projects/A/src/main.cpp' file path and `PROJECT_ROOT` is set to '/home/user/projects/A' then Code Climate JSON mentions the file as 'src/main.cpp'.
 * `-l, --use_location_lines` - use _line-based_ locations instead of _position-based_ as defined in _Locations_ section of Code Climate specification.
+* `-j, --as_json_array` - output as JSON array instead of ending each issue with \0.
 
 ## Example
 

clang_tidy_converter/__main__.py

@@ -9,7 +9,10 @@
 def create_argparser():
     p = ArgumentParser(description='Reads Clang-Tidy output from STDIN and prints Code Climate JSON to STDOUT.')
     p.add_argument('-r', '--project_root', default='', help='output file paths relative to PROJECT_ROOT')
-    p.add_argument('-l', '--use_location_lines', action='store_const', const=True, default=False, help='use line-based locations instead of position-based as defined in Locations section of Code Climate specification.')
+    p.add_argument('-l', '--use_location_lines', action='store_const', const=True, default=False,
+                   help='use line-based locations instead of position-based as defined in Locations section of Code Climate specification')
+    p.add_argument('-j', '--as_json_array', action='store_const', const=True, default=False,
+                   help='output as JSON array instead of ending each issue with \\0')
     return p
 
 def main(args):

clang_tidy_converter/formatter/code_climate_formatter.py

@@ -13,10 +13,10 @@ def __init__(self):
         pass
 
     def format(self, messages, args):
-        formatted_string = ""
-        for message in messages:
-            formatted_string += json.dumps(self._format_message(message, args), indent=2) + '\0\n'
-        return formatted_string
+        if args.as_json_array:
+            return json.dumps([self._format_message(msg, args) for msg in messages], indent=2)
+        else:
+            return ''.join(json.dumps(self._format_message(msg, args), indent=2) + '\0\n' for msg in messages)
 
     def _format_message(self, message, args):
         return {