Changed builld-llvm.py to use .json files

LLDB has many branches in a variety of repositories.
The build-script.py file is subtly different for each set.
This is unnecessary and causes merge headaches.

This patch makes build-llvm.py consult a directory full 
of .json files, each one of which matches a particular
branch using a regular expression.

Differential revision: https://reviews.llvm.org/D30275

llvm-svn: 295897

1 files changed, 33 insertions, 0 deletions

diff --git a/lldb/scripts/Xcode/repo.py b/lldb/scripts/Xcode/repo.py
new file mode 100644
index 00000000000..2f737b5186c
--- /dev/null
+++ b/lldb/scripts/Xcode/repo.py
@@ -0,0 +1,33 @@
+import json
+import os
+import re
+import subprocess
+
+def identifier():
+	try:
+		svn_output = subprocess.check_output(["svn", "info", "--show-item", "url"], stderr=subprocess.STDOUT).rstrip()
+		return svn_output
+	except:
+		pass
+	try:
+		git_remote_and_branch = subprocess.check_output(["git", "rev-parse", "--abbrev-ref", "--symbolic-full-name", "@{u}"]).rstrip()
+		git_remote = git_remote_and_branch.split("/")[0]
+		git_branch = "/".join(git_remote_and_branch.split("/")[1:])
+		git_url = subprocess.check_output(["git", "remote", "get-url", git_remote]).rstrip()
+		return git_url + ":" + git_branch
+	except:
+		pass
+	return None
+
+def find(identifier):
+	dir = os.path.dirname(os.path.realpath(__file__))
+	repos_dir = os.path.join(dir, "repos")
+	json_regex = re.compile(r"^.*.json$")
+	override_path = os.path.join(repos_dir, "OVERRIDE.json")
+	if os.path.isfile(override_path):
+		override_set = json.load(open(override_path))
+		return override_set["repos"]
+	for set in [json.load(open(os.path.join(repos_dir, f))) for f in filter(json_regex.match, os.listdir(repos_dir))]:
+		if re.match(set["regexp"], identifier):
+			return set["repos"]
+	return None