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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 """
     18 Usage: java-event-log-tags.py [-o output_file] <input_file> <merged_tags_file>
     19 
     20 Generate a java class containing constants for each of the event log
     21 tags in the given input file.
     22 
     23 -h to display this usage message and exit.
     24 """
     25 
     26 import cStringIO
     27 import getopt
     28 import os
     29 import os.path
     30 import re
     31 import sys
     32 
     33 import event_log_tags
     34 
     35 output_file = None
     36 
     37 try:
     38   opts, args = getopt.getopt(sys.argv[1:], "ho:")
     39 except getopt.GetoptError, err:
     40   print str(err)
     41   print __doc__
     42   sys.exit(2)
     43 
     44 for 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 
     54 if len(args) != 2:
     55   print "need exactly two input files, not %d" % (len(args),)
     56   print __doc__
     57   sys.exit(1)
     58 
     59 fn = args[0]
     60 tagfile = event_log_tags.TagFile(fn)
     61 
     62 # Load the merged tag file (which should have numbers assigned for all
     63 # tags.  Use the numbers from the merged file to fill in any missing
     64 # numbers from the input file.
     65 merged_fn = args[1]
     66 merged_tagfile = event_log_tags.TagFile(merged_fn)
     67 merged_by_name = dict([(t.tagname, t) for t in merged_tagfile.tags])
     68 for t in tagfile.tags:
     69   if t.tagnum is None:
     70     if t.tagname in merged_by_name:
     71       t.tagnum = merged_by_name[t.tagname].tagnum
     72     else:
     73       # We're building something that's not being included in the
     74       # product, so its tags don't appear in the merged file.  Assign
     75       # them all an arbitrary number so we can emit the java and
     76       # compile the (unused) package.
     77       t.tagnum = 999999
     78 
     79 if "java_package" not in tagfile.options:
     80   tagfile.AddError("java_package option not specified", linenum=0)
     81 
     82 hide = True
     83 if "javadoc_hide" in tagfile.options:
     84   hide = event_log_tags.BooleanFromString(tagfile.options["javadoc_hide"][0])
     85 
     86 if tagfile.errors:
     87   for fn, ln, msg in tagfile.errors:
     88     print >> sys.stderr, "%s:%d: error: %s" % (fn, ln, msg)
     89   sys.exit(1)
     90 
     91 buffer = cStringIO.StringIO()
     92 buffer.write("/* This file is auto-generated.  DO NOT MODIFY.\n"
     93              " * Source file: %s\n"
     94              " */\n\n" % (fn,))
     95 
     96 buffer.write("package %s;\n\n" % (tagfile.options["java_package"][0],))
     97 
     98 basename, _ = os.path.splitext(os.path.basename(fn))
     99 
    100 if hide:
    101   buffer.write("/**\n"
    102                " * @hide\n"
    103                " */\n")
    104 buffer.write("public class %s {\n" % (basename,))
    105 buffer.write("  private %s() { }  // don't instantiate\n" % (basename,))
    106 
    107 for t in tagfile.tags:
    108   if t.description:
    109     buffer.write("\n  /** %d %s %s */\n" % (t.tagnum, t.tagname, t.description))
    110   else:
    111     buffer.write("\n  /** %d %s */\n" % (t.tagnum, t.tagname))
    112 
    113   buffer.write("  public static final int %s = %d;\n" %
    114                (t.tagname.upper(), t.tagnum))
    115 
    116 keywords = frozenset(["abstract", "continue", "for", "new", "switch", "assert",
    117                       "default", "goto", "package", "synchronized", "boolean",
    118                       "do", "if", "private", "this", "break", "double",
    119                       "implements", "protected", "throw", "byte", "else",
    120                       "import", "public", "throws", "case", "enum",
    121                       "instanceof", "return", "transient", "catch", "extends",
    122                       "int", "short", "try", "char", "final", "interface",
    123                       "static", "void", "class", "finally", "long", "strictfp",
    124                       "volatile", "const", "float", "native", "super", "while"])
    125 
    126 def javaName(name):
    127   out = name[0].lower() + re.sub(r"[^A-Za-z0-9]", "", name.title())[1:]
    128   if out in keywords:
    129     out += "_"
    130   return out
    131 
    132 javaTypes = ["ERROR", "int", "long", "String", "Object[]"]
    133 for t in tagfile.tags:
    134   methodName = javaName("write_" + t.tagname)
    135   if t.description:
    136     args = [arg.strip("() ").split("|") for arg in t.description.split(",")]
    137   else:
    138     args = []
    139   argTypesNames = ", ".join([javaTypes[int(arg[1])] + " " + javaName(arg[0]) for arg in args])
    140   argNames = "".join([", " + javaName(arg[0]) for arg in args])
    141   buffer.write("\n  public static void %s(%s) {" % (methodName, argTypesNames))
    142   buffer.write("\n    android.util.EventLog.writeEvent(%s%s);" % (t.tagname.upper(), argNames))
    143   buffer.write("\n  }\n")
    144 
    145 
    146 buffer.write("}\n");
    147 
    148 output_dir = os.path.dirname(output_file)
    149 if not os.path.exists(output_dir):
    150   os.makedirs(output_dir)
    151 
    152 event_log_tags.WriteOutput(output_file, buffer)
    153