1  #!/usr/bin/env python
 2  #
 3  # A script similar to GNU envsubst, but filters out
 4  # some CI related variables.
 5  
 6  import os
 7  import sys
 8  
 9  
10  def main():
11      # Sanitize environment variables
12      vars_to_remove = []
13      for var_name in os.environ.keys():
14          if var_name.startswith('CI_'):
15              vars_to_remove.append(var_name)
16      for var_name in vars_to_remove:
17          del os.environ[var_name]
18  
19      for line in sys.stdin:
20          if not line:
21              break
22          sys.stdout.write(os.path.expandvars(line))
23      sys.stdout.flush()
24  
25  
26  if __name__ == '__main__':
27      main()