break up event-log-tags; generate java source files with constants

Construct the /system/etc/event-log-tags file by unioning together any
*.logtags files included in LOCAL_SRC_FILES throughout the system (with
appropriate error checking for dup tag numbers, etc.)

For java packages, generate a java source file from the logtags file for
that package that contains static integer constants for each tag name.

1 files changed, 103 insertions, 0 deletions

diff --git a/tools/merge-event-log-tags.py b/tools/merge-event-log-tags.py
new file mode 100755
index 0000000..2852612
--- /dev/null
+++ b/tools/merge-event-log-tags.py
@@ -0,0 +1,103 @@
+#!/usr/bin/env python
+#
+# Copyright (C) 2009 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+Usage: merge-event-log-tags.py [-o output_file] [input_files...]
+
+Merge together zero or more event-logs-tags files to produce a single
+output file, stripped of comments.  Checks that no tag numbers conflict
+and fails if they do.
+
+-h to display this usage message and exit.
+"""
+
+import cStringIO
+import getopt
+import sys
+
+import event_log_tags
+
+by_tagnum = {}
+errors = []
+warnings = []
+
+output_file = None
+
+try:
+  opts, args = getopt.getopt(sys.argv[1:], "ho:")
+except getopt.GetoptError, err:
+  print str(err)
+  print __doc__
+  sys.exit(2)
+
+for o, a in opts:
+  if o == "-h":
+    print __doc__
+    sys.exit(2)
+  elif o == "-o":
+    output_file = a
+  else:
+    print >> sys.stderr, "unhandled option %s" % (o,)
+    sys.exit(1)
+
+for fn in args:
+  tagfile = event_log_tags.TagFile(fn)
+
+  for t in tagfile.tags:
+    tagnum = t.tagnum
+    tagname = t.tagname
+    description = t.description
+
+    if t.tagnum in by_tagnum:
+      orig = by_tagnum[t.tagnum]
+
+      if (t.tagname == orig.tagname and
+          t.description == orig.description):
+        # if the name and description are identical, issue a warning
+        # instead of failing (to make it easier to move tags between
+        # projects without breaking the build).
+        tagfile.AddWarning("tag %d \"%s\" duplicated in %s:%d" %
+                           (t.tagnum, t.tagname, orig.filename, orig.linenum),
+                           linenum=t.linenum)
+      else:
+        tagfile.AddError("tag %d used by conflicting \"%s\" from %s:%d" %
+                         (t.tagnum, orig.tagname, orig.filename, orig.linenum),
+                         linenum=t.linenum)
+      continue
+
+    by_tagnum[t.tagnum] = t
+
+  errors.extend(tagfile.errors)
+  warnings.extend(tagfile.warnings)
+
+if errors:
+  for fn, ln, msg in errors:
+    print >> sys.stderr, "%s:%d: error: %s" % (fn, ln, msg)
+  sys.exit(1)
+
+if warnings:
+  for fn, ln, msg in warnings:
+    print >> sys.stderr, "%s:%d: warning: %s" % (fn, ln, msg)
+
+buffer = cStringIO.StringIO()
+for n in sorted(by_tagnum):
+  t = by_tagnum[n]
+  if t.description:
+    buffer.write("%d %s %s\n" % (t.tagnum, t.tagname, t.description))
+  else:
+    buffer.write("%d %s\n" % (t.tagnum, t.tagname))
+
+event_log_tags.WriteOutput(output_file, buffer)