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1#!/usr/bin/env python
2#
3# Copyright (C) 2009 The Android Open Source Project
4#
5# Licensed under the Apache License, Version 2.0 (the "License");
6# you may not use this file except in compliance with the License.
7# You may obtain a copy of the License at
8#
9#      http://www.apache.org/licenses/LICENSE-2.0
10#
11# Unless required by applicable law or agreed to in writing, software
12# distributed under the License is distributed on an "AS IS" BASIS,
13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14# See the License for the specific language governing permissions and
15# limitations under the License.
16
17"""
18Usage: java-event-log-tags.py [-o output_file] <input_file> <merged_tags_file>
19
20Generate a java class containing constants for each of the event log
21tags in the given input file.
22
23-h to display this usage message and exit.
24"""
25
26import cStringIO
27import getopt
28import os
29import os.path
30import re
31import sys
32
33import event_log_tags
34
35output_file = None
36
37try:
38  opts, args = getopt.getopt(sys.argv[1:], "ho:")
39except getopt.GetoptError, err:
40  print str(err)
41  print __doc__
42  sys.exit(2)
43
44for o, a in opts:
45  if o == "-h":
46    print __doc__
47    sys.exit(2)
48  elif o == "-o":
49    output_file = a
50  else:
51    print >> sys.stderr, "unhandled option %s" % (o,)
52    sys.exit(1)
53
54if len(args) != 1 and len(args) != 2:
55  print "need one or two input files, not %d" % (len(args),)
56  print __doc__
57  sys.exit(1)
58
59fn = args[0]
60tagfile = event_log_tags.TagFile(fn)
61
62if len(args) > 1:
63  # Load the merged tag file (which should have numbers assigned for all
64  # tags.  Use the numbers from the merged file to fill in any missing
65  # numbers from the input file.
66  merged_fn = args[1]
67  merged_tagfile = event_log_tags.TagFile(merged_fn)
68  merged_by_name = dict([(t.tagname, t) for t in merged_tagfile.tags])
69  for t in tagfile.tags:
70    if t.tagnum is None:
71      if t.tagname in merged_by_name:
72        t.tagnum = merged_by_name[t.tagname].tagnum
73      else:
74        # We're building something that's not being included in the
75        # product, so its tags don't appear in the merged file.  Assign
76        # them all an arbitrary number so we can emit the java and
77        # compile the (unused) package.
78        t.tagnum = 999999
79else:
80  # Not using the merged tag file, so all tags must have manually assigned
81  # numbers
82  for t in tagfile.tags:
83    if t.tagnum is None:
84      tagfilef.AddError("tag \"%s\" has no number" % (tagname,), tag.linenum)
85
86if "java_package" not in tagfile.options:
87  tagfile.AddError("java_package option not specified", linenum=0)
88
89hide = True
90if "javadoc_hide" in tagfile.options:
91  hide = event_log_tags.BooleanFromString(tagfile.options["javadoc_hide"][0])
92
93if tagfile.errors:
94  for fn, ln, msg in tagfile.errors:
95    print >> sys.stderr, "%s:%d: error: %s" % (fn, ln, msg)
96  sys.exit(1)
97
98buffer = cStringIO.StringIO()
99buffer.write("/* This file is auto-generated.  DO NOT MODIFY.\n"
100             " * Source file: %s\n"
101             " */\n\n" % (fn,))
102
103buffer.write("package %s;\n\n" % (tagfile.options["java_package"][0],))
104
105basename, _ = os.path.splitext(os.path.basename(fn))
106
107if hide:
108  buffer.write("/**\n"
109               " * @hide\n"
110               " */\n")
111buffer.write("public class %s {\n" % (basename,))
112buffer.write("  private %s() { }  // don't instantiate\n" % (basename,))
113
114for t in tagfile.tags:
115  if t.description:
116    buffer.write("\n  /** %d %s %s */\n" % (t.tagnum, t.tagname, t.description))
117  else:
118    buffer.write("\n  /** %d %s */\n" % (t.tagnum, t.tagname))
119
120  buffer.write("  public static final int %s = %d;\n" %
121               (t.tagname.upper(), t.tagnum))
122
123keywords = frozenset(["abstract", "continue", "for", "new", "switch", "assert",
124                      "default", "goto", "package", "synchronized", "boolean",
125                      "do", "if", "private", "this", "break", "double",
126                      "implements", "protected", "throw", "byte", "else",
127                      "import", "public", "throws", "case", "enum",
128                      "instanceof", "return", "transient", "catch", "extends",
129                      "int", "short", "try", "char", "final", "interface",
130                      "static", "void", "class", "finally", "long", "strictfp",
131                      "volatile", "const", "float", "native", "super", "while"])
132
133def javaName(name):
134  out = name[0].lower() + re.sub(r"[^A-Za-z0-9]", "", name.title())[1:]
135  if out in keywords:
136    out += "_"
137  return out
138
139javaTypes = ["ERROR", "int", "long", "String", "Object[]", "float"]
140for t in tagfile.tags:
141  methodName = javaName("write_" + t.tagname)
142  if t.description:
143    args = [arg.strip("() ").split("|") for arg in t.description.split(",")]
144  else:
145    args = []
146  argTypesNames = ", ".join([javaTypes[int(arg[1])] + " " + javaName(arg[0]) for arg in args])
147  argNames = "".join([", " + javaName(arg[0]) for arg in args])
148  buffer.write("\n  public static void %s(%s) {" % (methodName, argTypesNames))
149  buffer.write("\n    android.util.EventLog.writeEvent(%s%s);" % (t.tagname.upper(), argNames))
150  buffer.write("\n  }\n")
151
152
153buffer.write("}\n");
154
155output_dir = os.path.dirname(output_file)
156if not os.path.exists(output_dir):
157  os.makedirs(output_dir)
158
159event_log_tags.WriteOutput(output_file, buffer)
160