Normalize warning source file path to relative path.

#   warning_records      array of [idx to warn_patterns,

#                                  idx to project_names,

#                                  idx to warning_messages]

#   android_root

#   platform_version

#   target_product

#   target_variant

#   dump_csv():

import argparse

import os

import re

parser = argparse.ArgumentParser(description='Convert a build log into HTML')

initialize_arrays()

android_root = ''

platform_version = 'unknown'

target_product = 'unknown'

target_variant = 'unknown'

      i['compiled_patterns'].append(re.compile(pat))

def find_android_root(path):

  """Set and return android_root path if it is found."""

  global android_root

  parts = path.split('/')

  for idx in reversed(range(2, len(parts))):

    root_path = '/'.join(parts[:idx])

    # Android root directory should contain this script.

    if os.path.exists(root_path + '/build/tools/warn.py'):

      android_root = root_path

      return root_path

  return ''

def remove_android_root_prefix(path):

  """Remove android_root prefix from path if it is found."""

  if path.startswith(android_root):

    return path[1 + len(android_root):]

  else:

    return path

def normalize_path(path):

  """Normalize file path relative to android_root."""

  # If path is not an absolute path, just normalize it.

  path = os.path.normpath(path)

  if path[0] != '/':

    return path

  # Remove known prefix of root path and normalize the suffix.

  if android_root or find_android_root(path):

    return remove_android_root_prefix(path)

  else:

    return path

def normalize_warning_line(line):

  """Normalize file path relative to android_root in a warning line."""

  # replace fancy quotes with plain ol' quotes

  line = line.replace('‘', "'")

  line = line.replace('’', "'")

  line = line.strip()

  first_column = line.find(':')

  if first_column > 0:

    return normalize_path(line[:first_column]) + line[first_column:]

  else:

    return line

def parse_input_file():

  """Parse input file, match warning lines."""

  global platform_version

  # read the log file and classify all the warnings

  warning_lines = set()

  for line in infile:

    # replace fancy quotes with plain ol' quotes

    line = line.replace('‘', "'")

    line = line.replace('’', "'")

    if warning_pattern.match(line):

      line = normalize_warning_line(line)

      if line not in warning_lines:

        classify_warning(line)

        warning_lines.add(line)