1 files changed, 58 insertions, 0 deletions
diff --git a/netwerk/protocol/http/make_outgoing_tables.py b/netwerk/protocol/http/make_outgoing_tables.py
new file mode 100644
index 0000000000..b9a4268202
--- /dev/null
+++ b/netwerk/protocol/http/make_outgoing_tables.py
@@ -0,0 +1,58 @@
+# This script exists to auto-generate Http2HuffmanOutgoing.h from the table
+# contained in the HPACK spec. It's pretty simple to run:
+#   python make_outgoing_tables.py < http2_huffman_table.txt > Http2HuffmanOutgoing.h
+# where huff_outgoing.txt is copy/pasted text from the latest version of the
+# HPACK spec, with all non-relevant lines removed (the most recent version
+# of huff_outgoing.txt also lives in this directory as an example).
+import sys
+
+sys.stdout.write(
+    """/*
+ * THIS FILE IS AUTO-GENERATED. DO NOT EDIT!
+ */
+#ifndef mozilla__net__Http2HuffmanOutgoing_h
+#define mozilla__net__Http2HuffmanOutgoing_h
+
+namespace mozilla {
+namespace net {
+
+struct HuffmanOutgoingEntry {
+  uint32_t mValue;
+  uint8_t mLength;
+};
+
+static const HuffmanOutgoingEntry HuffmanOutgoing[] = {
+"""
+)
+
+entries = []
+for line in sys.stdin:
+    line = line.strip()
+    obracket = line.rfind("[")
+    nbits = int(line[obracket + 1 : -1])
+
+    lastbar = line.rfind("|")
+    space = line.find(" ", lastbar)
+    encend = line.rfind(" ", 0, obracket)
+
+    enc = line[space:encend].strip()
+    val = int(enc, 16)
+
+    entries.append({"length": nbits, "value": val})
+
+line = []
+for i, e in enumerate(entries):
+    sys.stdout.write("  { 0x%08x, %s }" % (e["value"], e["length"]))
+    if i < (len(entries) - 1):
+        sys.stdout.write(",")
+    sys.stdout.write("\n")
+
+sys.stdout.write(
+    """};
+
+} // namespace net
+} // namespace mozilla
+
+#endif // mozilla__net__Http2HuffmanOutgoing_h
+"""
+)