tools/dex-preopt

#!/bin/bash
#
# Copyright (C) 2010 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: dex-preopt [options] path/to/input.jar path/to/output.dex
#
# This tool runs a host build of dalvikvm in order to preoptimize dex
# files that will be run on a device.
#
# The input may be any sort of jar file (including .apk files), as long
# as it contains a classes.dex file. Note that optimized versions of
# bootstrap classes must be created before this can be run on other files;
# use the "--bootstrap" option to do this.
#
# The "output.dex" file must not already exist.
#
# This is expected to be running in a user build environment, where
# "dexopt" is available on the host.
#
# Options:
#   --bootstrap -- Process the bootstrap classes.
#   --build-dir=path/to/out -- Specify where the base of the build tree is.
#     This is typically a directory named "out". If not specified, it is
#     assumed to be the current directory. The specified input and output
#     paths are taken to be relative to this directory.
#   --product=name -- Specify the name of the product to work on. There
#     should be a directory with this name under build-dir/product. If
#     not specified, then there must only be one such directory, and that
#     one will be used.
#

buildDir="."
product=""
bootstrap="no"
bogus="no"

# Iterate over the arguments looking for options.
while true; do
    origOption="$1"

    if [ "x${origOption}" = "x--" ]; then
        # A raw "--" signals the end of option processing.
        shift
        break
    fi

    # Parse the option into components.
    optionBeforeValue=`expr -- "${origOption}" : '--\([^=]*\)='`

    if [ "$?" = '0' ]; then
        # Option has the form "--option=value".
        option="${optionBeforeValue}"
        value=`expr -- "${origOption}" : '--[^=]*=\(.*\)'`
        hasValue="yes"
    else
        option=`expr -- "${origOption}" : '--\(.*\)'`
        if [ "$?" = '1' ]; then
            # Not an option.
            break
        fi
        # Option has the form "--option".
        value=""
        hasValue="no"
    fi
    shift

    # Interpret the option
    if [ "${option}" = 'build-dir' -a "${hasValue}" = 'yes' ]; then
        buildDir="${value}"
    elif [ "${option}" = 'product' -a "${hasValue}" = 'yes' ]; then
        product="${value}"
    elif [ "${option}" = 'bootstrap' -a "${hasValue}" = 'no' ]; then
        bootstrap="yes"
    else
        echo "unknown option: ${origOption}" 1>&2
        bogus="yes"
    fi
done

if [ "${bogus}" = 'yes' ]; then
    # There was an error during option processing.
    echo "usage: $0 [--bootstrap] [--build-dir=path/to/out]" 1>&2
    echo "  path/to/input.jar path/to/output.dex" 1>&2
    exit 1
fi

# Sanity-check the specified build directory.
if [ "x${buildDir}" = 'x' ]; then
    echo "must specify build directory" 1>&2
    exit 1
elif [ ! '(' -d "${buildDir}" -a -w "${buildDir}" ')' ]; then
    echo "build directory is not a writable directory" 1>&2
    exit 1
fi

# Cd to the build directory, un-symlinkifying it for clarity.
cd "${buildDir}"
cd "`/bin/pwd`"

# Verify and expand the product directory, picking up the default
# if appropriate.
if [ "x${product}" = 'x' ]; then
    # Find the unique product directory.
    product="`ls target/product`"
    if [ "$?" != '0' ]; then
        echo "can't find product directory" 1>&2
        exit 1
    elif [ `expr -- "${product}" : ".* "` != '0' ]; then
        echo "ambiguous product directory" 1>&2
        exit 1
    fi
fi

# Expand the product directory.
product="target/product/${product}"

if [ ! '(' -d "${product}" -a -w "${product}" ')' ]; then
    echo "product directory is not a writable directory" 1>&2
    exit 1
fi

# Find the dexopt binary.
dexopt="`ls host/*/bin/dexopt`"
if [ "$?" != '0' ]; then
    echo "can't find dexopt binary" 1>&2
    exit 1
elif [ `expr -- "${dexopt}" : ".* "` != '0' ]; then
    echo "ambiguous host directory" 1>&2
    exit 1
fi


##
## TODO: The rest of this is unmodified from fadden's original prototype.
##
exit 2

basedir=$rootdir/out/host/linux-x86/pr/sim
javadir=$basedir/system/framework

# this is where we find bin/dexopt
export ANDROID_ROOT=$basedir/system
# location of "dalvik-cache" directory with optimized bootstrap DEX files
export ANDROID_DATA=$basedir/data

# bootstrap class path, must match what's on the device in init.rc
export BOOTCLASSPATH=$javadir/core.jar:$javadir/ext.jar:$javadir/framework.jar:$javadir/android.policy.jar:$javadir/services.jar

# dalvik-cache naming convention
pfx=$ANDROID_DATA/dalvik-cache/work@gitdalvik-dev@out@host@linux-x86@pr@sim@system@framework@
sfx=@classes.dex

# configure as appropriate for debuggging
export ANDROID_LOG_TAGS='*:d'

if [ "$1" = "--mkboot" ]; then
       echo making bootstrap classes
       dexopt-wrapper $javadir/core.jar ${pfx}core.jar${sfx}
       dexopt-wrapper $javadir/ext.jar ${pfx}ext.jar${sfx}
       dexopt-wrapper $javadir/framework.jar ${pfx}framework.jar${sfx}
       dexopt-wrapper $javadir/android.policy.jar ${pfx}android.policy.jar${sfx}
       dexopt-wrapper $javadir/services.jar ${pfx}services.jar${sfx}
       exit 0
else
       #echo Using bootstrap classes from $BOOTCLASSPATH
       exec dexopt-wrapper $*
fi