Fix Gemfile parsing code. Rely on 'bundle lock'

Signed-off-by: Ashish Bijlani <ashish.bijlani@gmail.com>

Author: ashishbijlani

.packj.yaml

@@ -1,5 +1,7 @@
 #
-# PRO account (XXX activated ONLY when 'auth' subcommand is used. see '--help')
+# Pro account for premium features
+#
+# XXX use 'auth' subcommand to activate. See '--help' for details.)
 #
 account:
   creds_file: ~/.packj.creds

Gemfile

@@ -0,0 +1,5 @@
+source 'https://rubygems.org'
+ruby "2.5.1"
+
+gem 'google-protobuf','3.21.2'
+gem 'rubocop','1.28.2'

packj/audit/main.py

@@ -751,7 +751,6 @@ def parse_request_args(args):
 			msg_info(f'Missing host volume at {container_mountpoint}. Run Docker/Podman with "-v /tmp:{container_mountpoint}" argument.')
 			exit(1)
 
-	import inspect
 	# build list of packages to audit
 	audit_pkg_list = []
 	for item in args.depfiles:

packj/audit/pm_proxy/rubygems.py

@@ -52,10 +52,18 @@ def __parse_string_for_dep_info(self, line):
 	def parse_deps_file(self, deps_file):
 		try:
 			cwd = os.path.dirname(os.path.abspath(inspect.getfile(inspect.currentframe())))
+			if not deps_file.endswith('.lock'):
+				cmd = ['bundle', 'lock', '--lockfile=packj-generated-Gemfile.lock']
+				stdout, stderr, error = exec_command("generate lockfile", cmd, cwd=cwd, redirect_mask=3)
+				if error or not stdout:
+					logging.debug(f'failed to generate lockfile for {deps_file}:\n{stdout}\n{stderr}')
+					raise Exception(f'deps parse error {error}!')
+				deps_file = dst = os.path.join(cwd, 'packj-generated-Gemfile.lock')
+
 			cmd = ['ruby', 'parse_gemfile.rb', os.path.abspath(deps_file)]
 			stdout, stderr, error = exec_command("parse deps", cmd, cwd=cwd, redirect_mask=3)
 			if error or not stdout:
-				logging.debug(f'deps parse error:\n{stdout}\n{stderr}')
+				logging.debug(f'failed to parse {deps_file}:\n{stdout}\n{stderr}')
 				raise Exception(f'deps parse error {error}!')
 
 			dep_list = []