bin/dotbot

   1 #!/usr/bin/env sh
   2
   3 # This is a valid shell script and also a valid Python script. When this file
   4 # is executed as a shell script, it finds a python binary and executes this
   5 # file as a Python script, passing along all of the command line arguments.
   6 # When this file is executed as a Python script, it loads and runs Dotbot. This
   7 # is useful because we don't know the name of the python binary.
   8
   9 ''':' # begin python string; this line is interpreted by the shell as `:`
  10 command -v python3 >/dev/null 2>&1 && exec python3 "$0" "$@"
  11 command -v python  >/dev/null 2>&1 && exec python  "$0" "$@"
  12 >&2 echo "error: cannot find python"
  13 exit 1
  14 '''
  15
  16 # python code
  17
  18 import sys, os
  19
  20 # this file is syntactically valid Python 2; bail out if the interpreter is Python 2
  21 if sys.version_info[0] < 3:
  22     print('error: this version of Dotbot is not compatible with Python 2:\nhttps://github.com/anishathalye/dotbot/wiki/Troubleshooting#python-2')
  23     exit(1)
  24 if sys.version_info < (3, 6):
  25     print('error: this version of Dotbot requires Python 3.6+')
  26     exit(1)
  27
  28 PROJECT_ROOT_DIRECTORY = os.path.dirname(
  29     os.path.dirname(os.path.realpath(__file__)))
  30
  31 def inject(lib_path):
  32     path = os.path.join(PROJECT_ROOT_DIRECTORY, 'lib', lib_path)
  33     sys.path.insert(0, path)
  34
  35 inject('pyyaml/lib')
  36
  37 if os.path.exists(os.path.join(PROJECT_ROOT_DIRECTORY, 'dotbot')):
  38     if PROJECT_ROOT_DIRECTORY not in sys.path:
  39         sys.path.insert(0, PROJECT_ROOT_DIRECTORY)
  40         os.putenv('PYTHONPATH', PROJECT_ROOT_DIRECTORY)
  41
  42 import dotbot
  43
  44 def main():
  45     dotbot.cli.main()
  46
  47 if __name__ == '__main__':
  48     main()