fix errors, support data file copy for big endian

scripts/make_data_assembly.py

Index: scripts/make_data_assembly.py
diff --git a/scripts/make_data_assembly.py b/scripts/make_data_assembly.py
new file mode 100755
index 0000000000000000000000000000000000000000..f69a3af6773d32a52bc6d1f0e01583fbefae3563
--- /dev/null
+++ b/scripts/make_data_assembly.py
@@ -0,0 +1,73 @@
+#!/usr/bin/python2
+
+# Copyright 2016 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 binascii
+import sys
+
+if len(sys.argv) < 2:
+  sys.exit("Usage: %s icu_data_file [output_assembly_file]" % sys.argv[0])
+
+input_file = sys.argv[1]
+n = input_file.find(".dat")
+if n == -1:
+  sys.exit("%s is not an ICU .dat file." % input_file)
+
+if len(sys.argv) < 3:
+  output_file = input_file[0:n] + "_dat.S"
+else:
+  output_file = sys.argv[2]
+
+if input_file.find("l.dat") == -1:
+  if input_file.find("b.dat") == -1:
+    sys.exit("%s has no endianness marker." % input_file)
+  else:
+    step = 1
+else:
+  step = -1
+
+input_data = open(input_file, 'rb').read()
+n = input_data.find("icudt")
+if n == -1:
+  sys.exit("Cannot find a version number in %s." % input_file)
+
+version_number = input_data[n + 5:n + 7]
+
+output = open(output_file, 'w')
+output.write(".globl icudt" + version_number + "_dat\n"
+             "\t.section .note.GNU-stack,\"\",%progbits\n"
+             "\t.section .rodata\n"
+             "\t.balign 16\n"
+             "#ifdef U_HIDE_DATA_SYMBOL\n"
+             "\t.hidden icudt" + version_number + "_dat\n"
+             "#endif\n"
+             "\t.type icudt" + version_number + "_dat,%object\n"
+             "icudt" + version_number + "_dat:\n")
+
+split = [binascii.hexlify(input_data[i:i + 4][::step]).upper().lstrip('0')
+        for i in range(0, len(input_data), 4)]
+
+for i in range(len(split)):
+  if (len(split[i]) == 0):
+    value = '0'
+  elif (len(split[i]) == 1):
+    if not any((c in '123456789') for c in split[i]):
+      value = '0x0' + split[i]
+    else:
+      value = split[i]
+  elif (len(split[i]) % 2 == 1):
+    value = '0x0' + split[i]
+  else:
+    value = '0x' + split[i]
+
+  if (i % 32 == 0):
+    output.write("\n.long ")
+  else:
+    output.write(",")
+  output.write(value)
+
+output.write("\n")
+output.close()
+print "Generated " + output_file