[subset] Add python util that was used to generated hb-ot-os2-unicode-ranges.hh
diff --git a/util/generate-unicode-ranges.py b/util/generate-unicode-ranges.py
new file mode 100644
index 0000000..e24b262
--- /dev/null
+++ b/util/generate-unicode-ranges.py
@@ -0,0 +1,50 @@
+# -*- coding: utf-8 -*-
+
+# Generates the code for a sorted unicode range array as used in hb-ot-os2-unicode-ranges.hh
+# Input is a tab seperated list of unicode ranges from the otspec.
+
+import io
+import re
+import sys
+
+reload(sys)
+sys.setdefaultencoding('utf-8')
+
+print (u"""static Range os2UnicodeRangesSorted[] = {""")
+
+args = sys.argv[1:]
+input_file = args[0]
+
+with io.open(input_file, mode="r", encoding="utf-8") as f:
+
+ all_ranges = [];
+ current_bit = 0
+ while True:
+ line = f.readline().strip()
+ if not line:
+ break
+ fields = re.split(r'\t+', line)
+ if len(fields) == 3:
+ current_bit = fields[0]
+ fields = fields[1:]
+ elif len(fields) > 3:
+ raise Error("bad input :(.")
+
+ name = fields[0]
+ ranges = re.split("-", fields[1])
+ if len(ranges) != 2:
+ raise Error("bad input :(.")
+
+ v = tuple((int(ranges[0], 16), int(ranges[1], 16), int(current_bit), name))
+ all_ranges.append(v)
+
+all_ranges = sorted(all_ranges, key=lambda t: t[0])
+
+for ranges in all_ranges:
+ start = ("0x%X" % ranges[0]).rjust(8)
+ end = ("0x%X" % ranges[1]).rjust(8)
+ bit = ("%s" % ranges[2]).rjust(3)
+
+ print " {%s, %s, %s}, // %s" % (start, end, bit, ranges[3])
+
+print (u"""};""");
