1 files changed, 174 insertions, 0 deletions
diff --git a/client.py b/client.py
new file mode 100755
index 0000000000..ea16f95627
--- /dev/null
+++ b/client.py
@@ -0,0 +1,174 @@
+#!/usr/bin/python
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+HG_EXCLUSIONS = [".hg", ".hgignore", ".hgtags"]
+
+import glob
+import os
+import shutil
+import sys
+from optparse import OptionParser
+from subprocess import check_call
+
+topsrcdir = os.path.dirname(__file__)
+if topsrcdir == "":
+    topsrcdir = "."
+
+
+def check_call_noisy(cmd, *args, **kwargs):
+    print("Executing command:", cmd)
+    check_call(cmd, *args, **kwargs)
+
+
+def do_hg_pull(dir, repository, hg):
+    fulldir = os.path.join(topsrcdir, dir)
+    # clone if the dir doesn't exist, pull if it does
+    if not os.path.exists(fulldir):
+        check_call_noisy([hg, "clone", repository, fulldir])
+    else:
+        cmd = [hg, "pull", "-u", "-R", fulldir]
+        if repository is not None:
+            cmd.append(repository)
+        check_call_noisy(cmd)
+    check_call(
+        [hg, "parent", "-R", fulldir, "--template=Updated to revision {node}.\n"]
+    )
+
+
+def do_hg_replace(dir, repository, tag, exclusions, hg):
+    """
+    Replace the contents of dir with the contents of repository, except for
+    files matching exclusions.
+    """
+    fulldir = os.path.join(topsrcdir, dir)
+    if os.path.exists(fulldir):
+        shutil.rmtree(fulldir)
+
+    assert not os.path.exists(fulldir)
+    check_call_noisy([hg, "clone", "-u", tag, repository, fulldir])
+
+    for thing in exclusions:
+        for excluded in glob.iglob(os.path.join(fulldir, thing)):
+            if os.path.isdir(excluded):
+                shutil.rmtree(excluded)
+            else:
+                os.remove(excluded)
+
+
+def toggle_trailing_blank_line(depname):
+    """If the trailing line is empty, then we'll delete it.
+    Otherwise we'll add a blank line."""
+    lines = open(depname, "rb").readlines()
+    if not lines:
+        print("unexpected short file", file=sys.stderr)
+        return
+
+    if not lines[-1].strip():
+        # trailing line is blank, removing it
+        open(depname, "wb").writelines(lines[:-1])
+    else:
+        # adding blank line
+        open(depname, "ab").write(b"\n")
+
+
+def get_trailing_blank_line_state(depname):
+    lines = open(depname, "r").readlines()
+    if not lines:
+        print("unexpected short file", file=sys.stderr)
+        return "no blank line"
+
+    if not lines[-1].strip():
+        return "has blank line"
+    return "no blank line"
+
+
+def update_nspr_or_nss(tag, depfile, destination, hgpath):
+    destination = destination.rstrip("/")
+    permanent_patch_dir = destination + "/patches"
+    temporary_patch_dir = destination + ".patches"
+    if os.path.exists(temporary_patch_dir):
+        print("please clean up leftover directory " + temporary_patch_dir)
+        sys.exit(2)
+    warn_if_patch_exists(permanent_patch_dir)
+    # protect patch directory from being removed by do_hg_replace
+    if os.path.exists(permanent_patch_dir):
+        shutil.move(permanent_patch_dir, temporary_patch_dir)
+    # now update the destination
+    print("reverting to HG version of %s to get its blank line state" % depfile)
+    check_call_noisy([options.hg, "revert", depfile])
+    old_state = get_trailing_blank_line_state(depfile)
+    print("old state of %s is: %s" % (depfile, old_state))
+    do_hg_replace(destination, hgpath, tag, HG_EXCLUSIONS, options.hg)
+    new_state = get_trailing_blank_line_state(depfile)
+    print("new state of %s is: %s" % (depfile, new_state))
+    if old_state == new_state:
+        print("toggling blank line in: ", depfile)
+        toggle_trailing_blank_line(depfile)
+    tag_file = destination + "/TAG-INFO"
+    with open(tag_file, "w") as f:
+        f.write(tag)
+    # move patch directory back to a subdirectory
+    if os.path.exists(temporary_patch_dir):
+        shutil.move(temporary_patch_dir, permanent_patch_dir)
+
+
+def warn_if_patch_exists(path):
+    # If the given patch directory exists and contains at least one file,
+    # then print warning and wait for the user to acknowledge.
+    if os.path.isdir(path) and os.listdir(path):
+        print("========================================")
+        print("WARNING: At least one patch file exists")
+        print("in directory: " + path)
+        print("You must manually re-apply all patches")
+        print("after this script has completed!")
+        print("========================================")
+        input("Press Enter to continue...")
+        return
+
+
+o = OptionParser(usage="client.py [options] update_nspr tagname | update_nss tagname")
+o.add_option(
+    "--skip-mozilla",
+    dest="skip_mozilla",
+    action="store_true",
+    default=False,
+    help="Obsolete",
+)
+
+o.add_option(
+    "--hg",
+    dest="hg",
+    default=os.environ.get("HG", "hg"),
+    help="The location of the hg binary",
+)
+o.add_option(
+    "--repo", dest="repo", help="the repo to update from (default: upstream repo)"
+)
+
+try:
+    options, args = o.parse_args()
+    action = args[0]
+except IndexError:
+    o.print_help()
+    sys.exit(2)
+
+if action in ("checkout", "co"):
+    print("Warning: client.py checkout is obsolete.", file=sys.stderr)
+    pass
+elif action in ("update_nspr"):
+    (tag,) = args[1:]
+    depfile = "nsprpub/config/prdepend.h"
+    if not options.repo:
+        options.repo = "https://hg.mozilla.org/projects/nspr"
+    update_nspr_or_nss(tag, depfile, "nsprpub", options.repo)
+elif action in ("update_nss"):
+    (tag,) = args[1:]
+    depfile = "security/nss/coreconf/coreconf.dep"
+    if not options.repo:
+        options.repo = "https://hg.mozilla.org/projects/nss"
+    update_nspr_or_nss(tag, depfile, "security/nss", options.repo)
+else:
+    o.print_help()
+    sys.exit(2)