Build liblouis_nacl using gyp.

third_party/liblouis/liblouis_list_tables.py

+#!/usr/bin/env python
+# Copyright 2013 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import os
+import re
+import sys
+
+import json
+import optparse
+
+# Matches the include statement in the braille table files.
+INCLUDE_RE = re.compile(r"^\s*include\s+([^#\s]+)")
+
+
+def Error(msg):
+  print >> sys.stderr, 'liblouis_list_tables: %s' % msg
+  sys.exit(1)
+
+
+def ToNativePath(pathname):
+  return os.path.sep.join(pathname.split('/'))
+
+
+def LoadTablesFile(filename):
+  with open(ToNativePath(filename), 'r') as fh:
+    return json.load(fh)
+
+
+def FindFile(filename, directories):
+  for d in directories:
+    fullname = '/'.join([d, filename])
+    if os.path.isfile(ToNativePath(fullname)):
+      return fullname
+  Error('File not found: %s' % filename)
+
+
+def GetIncludeFiles(filename):
+  result = []
+  with open(ToNativePath(filename), 'r') as fh:
+    for line in fh.xreadlines():
+      match = INCLUDE_RE.match(line)
+      if match:
+        result.append(match.group(1))
+  return result
+
+
+def ProcessFile(output_set, filename, directories):
+  fullname = FindFile(filename, directories)
+  if fullname in output_set:
+    return
+  output_set.add(fullname)
+  for include_file in GetIncludeFiles(fullname):
+    ProcessFile(output_set, include_file, directories)
+
+
+def DoMain(argv):
+  "Entry point for gyp's pymod_do_main command."
+  parser = optparse.OptionParser()
+  # Give a clearer error message when this is used as a module.
+  parser.prog = 'liblouis_list_tables'
+  parser.set_usage('usage: %prog [options] listfile')
+  parser.add_option('-D', '--directory', dest='directories',
+                    action='append', help='Where to search for table files')
+  (options, args) = parser.parse_args(argv)
+
+  if len(args) != 1:
+    parser.error('Expecting exactly one argument')
+  if not options.directories:
+    parser.error('At least one --directory option must be specified')
+
+  tables = LoadTablesFile(args[0])
+  output_set = set()
+  for table in tables:
+    ProcessFile(output_set, table['fileName'], options.directories)
+  return '\n'.join(output_set)
+
+
+def main(argv):
+  print DoMain(argv[1:])
+
+
+if __name__ == '__main__':
+  try:
+    sys.exit(main(sys.argv))
+  except KeyboardInterrupt:
+    Error('interrupted')