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      1 #!/bin/bash
      2 #
      3 # Copyright (C) 2007 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 # opcode-gen <file>
     18 #
     19 # This script uses the file bytecodes.txt (in this directory) to
     20 # generate code inside the given <file>, based on the directives found
     21 # in that file. Refer to those files to understand what's being
     22 # generated. (Look for comments that say "BEGIN(name)" where "name" is
     23 # one of the "emission" directives defined in opcode-gen.awk in this
     24 # directory.)
     25 
     26 file="$1"
     27 tmpfile="/tmp/$$.txt"
     28 
     29 echo "processing `basename $1`" 1>&2
     30 
     31 if [ "x$1" = "x" ]; then
     32     echo "must specify a file" 1>&2
     33     exit 1
     34 fi
     35 
     36 # Set up prog to be the path of this script, including following symlinks,
     37 # and set up progdir to be the fully-qualified pathname of its directory.
     38 prog="$0"
     39 while [ -h "${prog}" ]; do
     40     newProg=`/bin/ls -ld "${prog}"`
     41     newProg=`expr "${newProg}" : ".* -> \(.*\)$"`
     42     if expr "x${newProg}" : 'x/' >/dev/null; then
     43         prog="${newProg}"
     44     else
     45         progdir=`dirname "${prog}"`
     46         prog="${progdir}/${newProg}"
     47     fi
     48 done
     49 oldwd=`pwd`
     50 progdir=`dirname "${prog}"`
     51 cd "${progdir}"
     52 progdir=`pwd`
     53 prog="${progdir}"/`basename "${prog}"`
     54 cd "${oldwd}"
     55 
     56 bytecodeFile="$progdir/bytecode.txt"
     57 
     58 awk -v "bytecodeFile=$bytecodeFile" -f "$progdir/opcode-gen.awk" \
     59     "$file" > "$tmpfile"
     60 
     61 if [ "$?" = "0" ]; then
     62     cp "$tmpfile" "$file"
     63     rm "$tmpfile"
     64 else
     65     echo "error running awk" 1>&2
     66     exit 1
     67 fi
     68