From ddc4f2b9fc5566e70558a57133289f84d467cc98 Mon Sep 17 00:00:00 2001
From: Garret Rieger <grieger@google.com>
Date: Mon, 26 Feb 2018 15:59:32 -0800
Subject: [PATCH] [subset] Add python util that was used to generated
 hb-ot-os2-unicode-ranges.hh

---
 util/generate-unicode-ranges.py | 50 +++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 util/generate-unicode-ranges.py

diff --git a/util/generate-unicode-ranges.py b/util/generate-unicode-ranges.py
new file mode 100644
index 00000000..e24b262a
--- /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"""};""");
-- 
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