#!/usr/bin/python
# coding: utf-8
#

import json
import os
import sys

def generate_compile_commands_from_json(infilename, outfilename, builddir = None):
  try:
    if os.path.isfile(outfilename):
      os.remove(outfilename)

    jsonFile = open(infilename,'r')
    outFile = open(outfilename, 'w')

    for command in json.load(jsonFile):
      # blacklist build dir
      if builddir:
        fn = command['file']
        if command['file'].startswith(builddir):
          continue
          # whilelist some generated files (generated by us) - is not useful since qacpp can't handle dds data types
          #if not '_impl' in fn and not '_plugin.cpp' in fn:
          #  if 'moc_' in fn:
          #    continue
      # not sure why \" must be replaced with \"" - but that's the output of the old script
      # .acf file is not used, add some defines...
      cmd = '  "' + command['command'].replace('-isystem ', '-I').replace('-isystem', '-I').replace('-I ', '-I').replace('\\\\\\','\\"').replace('\"', '\""') + ' "\n'
      outFile.write(cmd)

    return True
  except Exception as e:
    print >> sys.stderr, "Error generating compile commands file '%s': %s" % (outfilename, e)
    return False

########### START --- CHECK FOR VALID OPTION AND PATH ###########
def main():
  print sys.argv[1]
  print sys.argv[2]
  try:
    usageOption = sys.argv[1]
  except:
    print ('''You forgot to add a OPTION
    -path <path>
    ''')
    sys.exit()
  try:
    path = sys.argv[2]
  except:
    print ('''You forgot to add a PATH
    -path <path>
    ''')
    sys.exit()

  if ( usageOption == '-path'):
    jsonOrigFile = os.path.abspath(path+'/compile_commands.json')
    outfilename  = os.path.abspath(path+'/compile_commands.txt')
    if not os.path.isfile(jsonOrigFile):
      print >> sys.stderr, "Could not find compile commands file %s... aborting" % jsonOrigFile
      sys.exit(1)
    generate_compile_commands_from_json(jsonOrigFile, outfilename)

########### END --- CHECK FOR VALID OPTION AND PATH ###########

if __name__ == "__main__":
    main()