Versioning

# vim: set ts=8 sts=2 sw=2 tw=99 et ft=python: 
import os, sys
import re

builder.SetBuildFolder('/')

includes = builder.AddFolder('includes')

argv = [
  sys.executable,
  os.path.join(builder.sourcePath, 'tools', 'buildbot', 'generate_headers.py'),
  os.path.join(builder.sourcePath),
  os.path.join(builder.buildPath, 'includes'),
]
outputs = [
  os.path.join(builder.buildFolder, 'includes', 'nps_version_auto.inc'),
]

with open(os.path.join(builder.sourcePath, '.git', 'HEAD')) as fp:
  head_contents = fp.read().strip()
  if re.search('^[a-fA-F0-9]{40}$', head_contents):
    git_head_path = os.path.join(builder.sourcePath, '.git', 'HEAD')
  else:
    git_state = head_contents.split(':')[1].strip()
    git_head_path = os.path.join(builder.sourcePath, '.git', git_state)
    if not os.path.exists(git_head_path):
      git_head_path = os.path.join(builder.sourcePath, '.git', 'HEAD')

sources = [
  os.path.join(builder.sourcePath, 'product.version'),

  # This is a hack, but we need some way to only run this script when Git changes.
  git_head_path,

  # The script source is a dependency, of course...
  argv[1]
]
cmd_node, output_nodes = builder.AddCommand(
  inputs=sources,
  argv=argv,
  outputs=outputs
)

rvalue = output_nodes