Update third_party/document_image_extractor

third_party/document_image_extractor/third_party/closure-library/closure/bin/calcdeps.py

Index: third_party/document_image_extractor/third_party/closure-library/closure/bin/calcdeps.py
diff --git a/third_party/document_image_extractor/third_party/closure-library/closure/bin/calcdeps.py b/third_party/document_image_extractor/third_party/closure-library/closure/bin/calcdeps.py
deleted file mode 100755
index 9cb1a6db062e944a9a516af2c80a2f76e16d2e58..0000000000000000000000000000000000000000
--- a/third_party/document_image_extractor/third_party/closure-library/closure/bin/calcdeps.py
+++ /dev/null
@@ -1,590 +0,0 @@
-#!/usr/bin/env python
-#
-# Copyright 2006 The Closure Library Authors. All Rights Reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS-IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-
-"""Calculates JavaScript dependencies without requiring Google's build system.
-
-This tool is deprecated and is provided for legacy users.
-See build/closurebuilder.py and build/depswriter.py for the current tools.
-
-It iterates over a number of search paths and builds a dependency tree.  With
-the inputs provided, it walks the dependency tree and outputs all the files
-required for compilation.
-"""
-
-
-
-
-
-try:
-  import distutils.version
-except ImportError:
-  # distutils is not available in all environments
-  distutils = None
-
-import logging
-import optparse
-import os
-import re
-import subprocess
-import sys
-
-
-_BASE_REGEX_STRING = '^\s*goog\.%s\(\s*[\'"](.+)[\'"]\s*\)'
-req_regex = re.compile(_BASE_REGEX_STRING % 'require')
-prov_regex = re.compile(_BASE_REGEX_STRING % 'provide')
-ns_regex = re.compile('^ns:((\w+\.)*(\w+))$')
-version_regex = re.compile('[\.0-9]+')
-
-
-def IsValidFile(ref):
-  """Returns true if the provided reference is a file and exists."""
-  return os.path.isfile(ref)
-
-
-def IsJsFile(ref):
-  """Returns true if the provided reference is a Javascript file."""
-  return ref.endswith('.js')
-
-
-def IsNamespace(ref):
-  """Returns true if the provided reference is a namespace."""
-  return re.match(ns_regex, ref) is not None
-
-
-def IsDirectory(ref):
-  """Returns true if the provided reference is a directory."""
-  return os.path.isdir(ref)
-
-
-def ExpandDirectories(refs):
-  """Expands any directory references into inputs.
-
-  Description:
-    Looks for any directories in the provided references.  Found directories
-    are recursively searched for .js files, which are then added to the result
-    list.
-
-  Args:
-    refs: a list of references such as files, directories, and namespaces
-
-  Returns:
-    A list of references with directories removed and replaced by any
-    .js files that are found in them. Also, the paths will be normalized.
-  """
-  result = []
-  for ref in refs:
-    if IsDirectory(ref):
-      # Disable 'Unused variable' for subdirs
-      # pylint: disable=unused-variable
-      for (directory, subdirs, filenames) in os.walk(ref):
-        for filename in filenames:
-          if IsJsFile(filename):
-            result.append(os.path.join(directory, filename))
-    else:
-      result.append(ref)
-  return map(os.path.normpath, result)
-
-
-class DependencyInfo(object):
-  """Represents a dependency that is used to build and walk a tree."""
-
-  def __init__(self, filename):
-    self.filename = filename
-    self.provides = []
-    self.requires = []
-
-  def __str__(self):
-    return '%s Provides: %s Requires: %s' % (self.filename,
-                                             repr(self.provides),
-                                             repr(self.requires))
-
-
-def BuildDependenciesFromFiles(files):
-  """Build a list of dependencies from a list of files.
-
-  Description:
-    Takes a list of files, extracts their provides and requires, and builds
-    out a list of dependency objects.
-
-  Args:
-    files: a list of files to be parsed for goog.provides and goog.requires.
-
-  Returns:
-    A list of dependency objects, one for each file in the files argument.
-  """
-  result = []
-  filenames = set()
-  for filename in files:
-    if filename in filenames:
-      continue
-
-    # Python 3 requires the file encoding to be specified
-    if (sys.version_info[0] < 3):
-      file_handle = open(filename, 'r')
-    else:
-      file_handle = open(filename, 'r', encoding='utf8')
-
-    try:
-      dep = CreateDependencyInfo(filename, file_handle)
-      result.append(dep)
-    finally:
-      file_handle.close()
-
-    filenames.add(filename)
-
-  return result
-
-
-def CreateDependencyInfo(filename, source):
-  """Create dependency info.
-
-  Args:
-    filename: Filename for source.
-    source: File-like object containing source.
-
-  Returns:
-    A DependencyInfo object with provides and requires filled.
-  """
-  dep = DependencyInfo(filename)
-  for line in source:
-    if re.match(req_regex, line):
-      dep.requires.append(re.search(req_regex, line).group(1))
-    if re.match(prov_regex, line):
-      dep.provides.append(re.search(prov_regex, line).group(1))
-  return dep
-
-
-def BuildDependencyHashFromDependencies(deps):
-  """Builds a hash for searching dependencies by the namespaces they provide.
-
-  Description:
-    Dependency objects can provide multiple namespaces.  This method enumerates
-    the provides of each dependency and adds them to a hash that can be used
-    to easily resolve a given dependency by a namespace it provides.
-
-  Args:
-    deps: a list of dependency objects used to build the hash.
-
-  Raises:
-    Exception: If a multiple files try to provide the same namepace.
-
-  Returns:
-    A hash table { namespace: dependency } that can be used to resolve a
-    dependency by a namespace it provides.
-  """
-  dep_hash = {}
-  for dep in deps:
-    for provide in dep.provides:
-      if provide in dep_hash:
-        raise Exception('Duplicate provide (%s) in (%s, %s)' % (
-            provide,
-            dep_hash[provide].filename,
-            dep.filename))
-      dep_hash[provide] = dep
-  return dep_hash
-
-
-def CalculateDependencies(paths, inputs):
-  """Calculates the dependencies for given inputs.
-
-  Description:
-    This method takes a list of paths (files, directories) and builds a
-    searchable data structure based on the namespaces that each .js file
-    provides.  It then parses through each input, resolving dependencies
-    against this data structure.  The final output is a list of files,
-    including the inputs, that represent all of the code that is needed to
-    compile the given inputs.
-
-  Args:
-    paths: the references (files, directories) that are used to build the
-      dependency hash.
-    inputs: the inputs (files, directories, namespaces) that have dependencies
-      that need to be calculated.
-
-  Raises:
-    Exception: if a provided input is invalid.
-
-  Returns:
-    A list of all files, including inputs, that are needed to compile the given
-    inputs.
-  """
-  deps = BuildDependenciesFromFiles(paths + inputs)
-  search_hash = BuildDependencyHashFromDependencies(deps)
-  result_list = []
-  seen_list = []
-  for input_file in inputs:
-    if IsNamespace(input_file):
-      namespace = re.search(ns_regex, input_file).group(1)
-      if namespace not in search_hash:
-        raise Exception('Invalid namespace (%s)' % namespace)
-      input_file = search_hash[namespace].filename
-    if not IsValidFile(input_file) or not IsJsFile(input_file):
-      raise Exception('Invalid file (%s)' % input_file)
-    seen_list.append(input_file)
-    file_handle = open(input_file, 'r')
-    try:
-      for line in file_handle:
-        if re.match(req_regex, line):
-          require = re.search(req_regex, line).group(1)
-          ResolveDependencies(require, search_hash, result_list, seen_list)
-    finally:
-      file_handle.close()
-    result_list.append(input_file)
-
-  # All files depend on base.js, so put it first.
-  base_js_path = FindClosureBasePath(paths)
-  if base_js_path:
-    result_list.insert(0, base_js_path)
-  else:
-    logging.warning('Closure Library base.js not found.')
-
-  return result_list
-
-
-def FindClosureBasePath(paths):
-  """Given a list of file paths, return Closure base.js path, if any.
-
-  Args:
-    paths: A list of paths.
-
-  Returns:
-    The path to Closure's base.js file including filename, if found.
-  """
-
-  for path in paths:
-    pathname, filename = os.path.split(path)
-
-    if filename == 'base.js':
-      f = open(path)
-
-      is_base = False
-
-      # Sanity check that this is the Closure base file.  Check that this
-      # is where goog is defined.  This is determined by the @provideGoog
-      # flag.
-      for line in f:
-        if '@provideGoog' in line:
-          is_base = True
-          break
-
-      f.close()
-
-      if is_base:
-        return path
-
-def ResolveDependencies(require, search_hash, result_list, seen_list):
-  """Takes a given requirement and resolves all of the dependencies for it.
-
-  Description:
-    A given requirement may require other dependencies.  This method
-    recursively resolves all dependencies for the given requirement.
-
-  Raises:
-    Exception: when require does not exist in the search_hash.
-
-  Args:
-    require: the namespace to resolve dependencies for.
-    search_hash: the data structure used for resolving dependencies.
-    result_list: a list of filenames that have been calculated as dependencies.
-      This variable is the output for this function.
-    seen_list: a list of filenames that have been 'seen'.  This is required
-      for the dependency->dependant ordering.
-  """
-  if require not in search_hash:
-    raise Exception('Missing provider for (%s)' % require)
-
-  dep = search_hash[require]
-  if not dep.filename in seen_list:
-    seen_list.append(dep.filename)
-    for sub_require in dep.requires:
-      ResolveDependencies(sub_require, search_hash, result_list, seen_list)
-    result_list.append(dep.filename)
-
-
-def GetDepsLine(dep, base_path):
-  """Returns a JS string for a dependency statement in the deps.js file.
-
-  Args:
-    dep: The dependency that we're printing.
-    base_path: The path to Closure's base.js including filename.
-  """
-  return 'goog.addDependency("%s", %s, %s);' % (
-      GetRelpath(dep.filename, base_path), dep.provides, dep.requires)
-
-
-def GetRelpath(path, start):
-  """Return a relative path to |path| from |start|."""
-  # NOTE: Python 2.6 provides os.path.relpath, which has almost the same
-  # functionality as this function. Since we want to support 2.4, we have
-  # to implement it manually. :(
-  path_list = os.path.abspath(os.path.normpath(path)).split(os.sep)
-  start_list = os.path.abspath(
-      os.path.normpath(os.path.dirname(start))).split(os.sep)
-
-  common_prefix_count = 0
-  for i in range(0, min(len(path_list), len(start_list))):
-    if path_list[i] != start_list[i]:
-      break
-    common_prefix_count += 1
-
-  # Always use forward slashes, because this will get expanded to a url,
-  # not a file path.
-  return '/'.join(['..'] * (len(start_list) - common_prefix_count) +
-                  path_list[common_prefix_count:])
-
-
-def PrintLine(msg, out):
-  out.write(msg)
-  out.write('\n')
-
-
-def PrintDeps(source_paths, deps, out):
-  """Print out a deps.js file from a list of source paths.
-
-  Args:
-    source_paths: Paths that we should generate dependency info for.
-    deps: Paths that provide dependency info. Their dependency info should
-        not appear in the deps file.
-    out: The output file.
-
-  Returns:
-    True on success, false if it was unable to find the base path
-    to generate deps relative to.
-  """
-  base_path = FindClosureBasePath(source_paths + deps)
-  if not base_path:
-    return False
-
-  PrintLine('// This file was autogenerated by calcdeps.py', out)
-  excludesSet = set(deps)
-
-  for dep in BuildDependenciesFromFiles(source_paths + deps):
-    if not dep.filename in excludesSet:
-      PrintLine(GetDepsLine(dep, base_path), out)
-
-  return True
-
-
-def PrintScript(source_paths, out):
-  for index, dep in enumerate(source_paths):
-    PrintLine('// Input %d' % index, out)
-    f = open(dep, 'r')
-    PrintLine(f.read(), out)
-    f.close()
-
-
-def GetJavaVersion():
-  """Returns the string for the current version of Java installed."""
-  proc = subprocess.Popen(['java', '-version'], stderr=subprocess.PIPE)
-  proc.wait()
-  version_line = proc.stderr.read().splitlines()[0]
-  return version_regex.search(version_line).group()
-
-
-def FilterByExcludes(options, files):
-  """Filters the given files by the exlusions specified at the command line.
-
-  Args:
-    options: The flags to calcdeps.
-    files: The files to filter.
-  Returns:
-    A list of files.
-  """
-  excludes = []
-  if options.excludes:
-    excludes = ExpandDirectories(options.excludes)
-
-  excludesSet = set(excludes)
-  return [i for i in files if not i in excludesSet]
-
-
-def GetPathsFromOptions(options):
-  """Generates the path files from flag options.
-
-  Args:
-    options: The flags to calcdeps.
-  Returns:
-    A list of files in the specified paths. (strings).
-  """
-
-  search_paths = options.paths
-  if not search_paths:
-    search_paths = ['.']  # Add default folder if no path is specified.
-
-  search_paths = ExpandDirectories(search_paths)
-  return FilterByExcludes(options, search_paths)
-
-
-def GetInputsFromOptions(options):
-  """Generates the inputs from flag options.
-
-  Args:
-    options: The flags to calcdeps.
-  Returns:
-    A list of inputs (strings).
-  """
-  inputs = options.inputs
-  if not inputs:  # Parse stdin
-    logging.info('No inputs specified. Reading from stdin...')
-    inputs = filter(None, [line.strip('\n') for line in sys.stdin.readlines()])
-
-  logging.info('Scanning files...')
-  inputs = ExpandDirectories(inputs)
-
-  return FilterByExcludes(options, inputs)
-
-
-def Compile(compiler_jar_path, source_paths, out, flags=None):
-  """Prepares command-line call to Closure compiler.
-
-  Args:
-    compiler_jar_path: Path to the Closure compiler .jar file.
-    source_paths: Source paths to build, in order.
-    flags: A list of additional flags to pass on to Closure compiler.
-  """
-  args = ['java', '-jar', compiler_jar_path]
-  for path in source_paths:
-    args += ['--js', path]
-
-  if flags:
-    args += flags
-
-  logging.info('Compiling with the following command: %s', ' '.join(args))
-  proc = subprocess.Popen(args, stdout=subprocess.PIPE)
-  (stdoutdata, stderrdata) = proc.communicate()
-  if proc.returncode != 0:
-    logging.error('JavaScript compilation failed.')
-    sys.exit(1)
-  else:
-    out.write(stdoutdata)
-
-
-def main():
-  """The entrypoint for this script."""
-
-  logging.basicConfig(format='calcdeps.py: %(message)s', level=logging.INFO)
-
-  usage = 'usage: %prog [options] arg'
-  parser = optparse.OptionParser(usage)
-  parser.add_option('-i',
-                    '--input',
-                    dest='inputs',
-                    action='append',
-                    help='The inputs to calculate dependencies for. Valid '
-                    'values can be files, directories, or namespaces '
-                    '(ns:goog.net.XhrIo).  Only relevant to "list" and '
-                    '"script" output.')
-  parser.add_option('-p',
-                    '--path',
-                    dest='paths',
-                    action='append',
-                    help='The paths that should be traversed to build the '
-                    'dependencies.')
-  parser.add_option('-d',
-                    '--dep',
-                    dest='deps',
-                    action='append',
-                    help='Directories or files that should be traversed to '
-                    'find required dependencies for the deps file. '
-                    'Does not generate dependency information for names '
-                    'provided by these files. Only useful in "deps" mode.')
-  parser.add_option('-e',
-                    '--exclude',
-                    dest='excludes',
-                    action='append',
-                    help='Files or directories to exclude from the --path '
-                    'and --input flags')
-  parser.add_option('-o',
-                    '--output_mode',
-                    dest='output_mode',
-                    action='store',
-                    default='list',
-                    help='The type of output to generate from this script. '
-                    'Options are "list" for a list of filenames, "script" '
-                    'for a single script containing the contents of all the '
-                    'file, "deps" to generate a deps.js file for all '
-                    'paths, or "compiled" to produce compiled output with '
-                    'the Closure compiler.')
-  parser.add_option('-c',
-                    '--compiler_jar',
-                    dest='compiler_jar',
-                    action='store',
-                    help='The location of the Closure compiler .jar file.')
-  parser.add_option('-f',
-                    '--compiler_flag',
-                    '--compiler_flags', # for backwards compatability
-                    dest='compiler_flags',
-                    action='append',
-                    help='Additional flag to pass to the Closure compiler. '
-                    'May be specified multiple times to pass multiple flags.')
-  parser.add_option('--output_file',
-                    dest='output_file',
-                    action='store',
-                    help=('If specified, write output to this path instead of '
-                          'writing to standard output.'))
-
-  (options, args) = parser.parse_args()
-
-  search_paths = GetPathsFromOptions(options)
-
-  if options.output_file:
-    out = open(options.output_file, 'w')
-  else:
-    out = sys.stdout
-
-  if options.output_mode == 'deps':
-    result = PrintDeps(search_paths, ExpandDirectories(options.deps or []), out)
-    if not result:
-      logging.error('Could not find Closure Library in the specified paths')
-      sys.exit(1)
-
-    return
-
-  inputs = GetInputsFromOptions(options)
-
-  logging.info('Finding Closure dependencies...')
-  deps = CalculateDependencies(search_paths, inputs)
-  output_mode = options.output_mode
-
-  if output_mode == 'script':
-    PrintScript(deps, out)
-  elif output_mode == 'list':
-    # Just print out a dep per line
-    for dep in deps:
-      PrintLine(dep, out)
-  elif output_mode == 'compiled':
-    # Make sure a .jar is specified.
-    if not options.compiler_jar:
-      logging.error('--compiler_jar flag must be specified if --output is '
-                    '"compiled"')
-      sys.exit(1)
-
-    # User friendly version check.
-    if distutils and not (distutils.version.LooseVersion(GetJavaVersion()) >
-        distutils.version.LooseVersion('1.6')):
-      logging.error('Closure Compiler requires Java 1.6 or higher.')
-      logging.error('Please visit http://www.java.com/getjava')
-      sys.exit(1)
-
-    Compile(options.compiler_jar, deps, out, options.compiler_flags)
-
-  else:
-    logging.error('Invalid value for --output flag.')
-    sys.exit(1)
-
-if __name__ == '__main__':
-  main()