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"""
A tool to embedded tsv file into test binary for quality regression test.
"""

__author__ = "taku"

import xml.dom.minidom
import sys

def EscapeString(s):
  """ escape the string with "\\xXX" format.

  We don't use encode('string_escape') because it doesn't escape ascii
  characters.

  Args:
    s: a string to be escaped

  Returns:
    an escaped string.
  """
  result = ''
  for c in s:
    hexstr = hex(ord(c))
    # because hexstr contains '0x', remove the prefix and add our prefix
    result += '\\x' + hexstr[2:]
  return result

_DISABLED = 'false'
_ENABLED = 'true'

def ParseTSV(file):
  for line in open(file, 'r'):
    if line.startswith('#'):
      continue
    line = line.rstrip('\r\n')
    if not line:
      continue
    yield (_ENABLED, line)


def GetText(node):
  if len(node) >= 1 and node[0].firstChild:
    return node[0].firstChild.nodeValue.strip().replace('\t', ' ')
  else:
    return ''


def ParseXML(file):
  dom = xml.dom.minidom.parse(file)
  for issue in dom.getElementsByTagName('issue'):
    status = GetText(issue.getElementsByTagName('status'))
    enabled = (_DISABLED if status != 'Fixed' and status != 'Verified'
               else _ENABLED)
    id = issue.attributes['id'].value
    target = GetText(issue.getElementsByTagName('target'))
    for detail in issue.getElementsByTagName(u'detail'):
      fields = []
      fields.append('mozcsu_%s' % id)
      for key in ('reading', 'output', 'actionStatus', 'rank', 'accuracy'):
        fields.append(GetText(detail.getElementsByTagName(key)))
      if target:
        fields.append(target)
      tsv_line = ('\t'.join(fields)).encode('utf-8')
      yield (enabled, tsv_line)


def ParseFile(file):
  if file.endswith('.xml'):
    return ParseXML(file)
  else:
    return ParseTSV(file)


def GenerateHeader(files):
  try:
    print 'namespace mozc{'
    print 'struct TestCase {'
    print '  const bool enabled;'
    print '  const char *tsv;'
    print '} kTestData[] = {'
    for file in files:
      for enabled, line in ParseFile(file):
        print ' {%s, "%s"},' % (enabled, EscapeString(line))
    print '  {false, nullptr},'
    print '};'
    print '}  // namespace mozc'
  except:
    print 'cannot open %s' % (file)
    sys.exit(1)


def main():
  GenerateHeader(sys.argv[1:])

if __name__ == '__main__':
  main()