1 files changed, 108 insertions, 0 deletions
diff --git a/etc/patch-trace-template.py b/etc/patch-trace-template.py
new file mode 100755
index 00000000000..84400c8e02e
--- /dev/null
+++ b/etc/patch-trace-template.py
@@ -0,0 +1,108 @@
+#!/usr/bin/env python
+
+# Copyright 2013 The Servo Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+import re
+import subprocess
+import sys
+from xml.etree import ElementTree
+from xml.etree.ElementTree import Element
+
+if len(sys.argv) < 3:
+    sys.stderr.write("""usage: patch-trace-template.py components/profile_traits/time.rs path/to/my.tracetemplate
+
+`time.rs` is usually located in `components/profile_traits/time.rs`.
+Trace templates are typically located in `~/Library/Application Support/Instruments/Templates`.
+The supplied trace template must contain the "Points of Interest" instrument.
+Output is written to standard output and should typically be piped to a new `.tracetemplate` file.
+
+Example:
+    patch-trace-template.py \\
+    components/profile_traits/time.rs \\
+        ~/Library/Application\\ Support/Instruments/Templates/MyTemplate.tracetemplate > \\
+        ~/Library/Application\\ Support/Instruments/Templates/MyServoTemplate.tracetemplate
+""")
+    sys.exit(0)
+
+rust_source = open(sys.argv[1], 'r')
+lines = iter(rust_source)
+for line in lines:
+    if line.lstrip().startswith("pub enum ProfilerCategory"):
+        break
+
+code_pairs = []
+regex = re.compile(r"\s*(\w+)\s*=\s*([0-9]+|0x[a-fA-F0-9]+),?\s*$")
+for line in lines:
+    if line.lstrip().startswith("}"):
+        break
+
+    match = regex.match(line)
+    if match is None:
+        continue
+    code_pairs.append((match.group(2), match.group(1)))
+
+xml = subprocess.check_output(["plutil", "-convert", "xml1", "-o", "-", sys.argv[2]])
+plist = ElementTree.ElementTree(ElementTree.fromstring(xml))
+
+elems = iter(plist.findall("./dict/*"))
+for elem in elems:
+    if elem.tag != 'key' or elem.text != '$objects':
+        continue
+    array = elems.next()
+    break
+
+elems = iter(array.findall("./*"))
+for elem in elems:
+    if elem.tag != 'string' or elem.text != 'kdebugIntervalRule':
+        continue
+    dictionary = elems.next()
+    break
+
+elems = iter(dictionary.findall("./*"))
+for elem in elems:
+    if elem.tag != 'key' or elem.text != 'NS.objects':
+        continue
+    objects_array = elems.next()
+    break
+
+child_count = sum(1 for _ in iter(array.findall("./*")))
+
+for code_pair in code_pairs:
+    number_index = child_count
+    integer = Element('integer')
+    integer.text = str(int(code_pair[0], 0))
+    array.append(integer)
+    child_count += 1
+
+    string_index = child_count
+    string = Element('string')
+    string.text = code_pair[1]
+    array.append(string)
+    child_count += 1
+
+    dictionary = Element('dict')
+    key = Element('key')
+    key.text = "CF$UID"
+    dictionary.append(key)
+    integer = Element('integer')
+    integer.text = str(number_index)
+    dictionary.append(integer)
+    objects_array.append(dictionary)
+
+    dictionary = Element('dict')
+    key = Element('key')
+    key.text = "CF$UID"
+    dictionary.append(key)
+    integer = Element('integer')
+    integer.text = str(string_index)
+    dictionary.append(integer)
+    objects_array.append(dictionary)
+
+plist.write(sys.stdout, encoding='utf-8', xml_declaration=True)