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#!/bin/bash -e
#
# Copyright (c) 2012 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# This script is used to unpack a .a file into object files.
#
# Arguments:
#
# d - Output directory.
# a - List of possible locations of the archive.
# f - List of files to extract.
#
export LC_ALL=C
# Avoid things like -n messing up the grepping below.
unset GREP_OPTIONS
while getopts "d:a:f:r:" flag
do
if [ "$flag" = "d" ]; then
out_dir=$OPTARG
elif [ "$flag" = "a" ]; then
lib_files="$OPTARG $lib_files"
elif [ "$flag" = "f" ]; then
obj_files="$OPTARG $obj_files"
elif [ "$flag" = "r" ]; then
ar=$OPTARG
fi
done
for f in $lib_files; do
if [ -a $f ]; then
lib_file=$f
break
fi
done
if [ -z "$lib_file" ]; then
echo "Failed to locate a static library."
false
exit
fi
if [ ! -f "$ar" ]; then
# Find the appropriate ar to use.
ar="ar"
if [ -n "$AR_target" ]; then
ar=$AR_target
elif [ -n "$AR" ]; then
ar=$AR
fi
fi
obj_list="$($ar t $lib_file | grep '\.o$')"
function extract_object {
for f in $obj_list; do
filename="${f##*/}"
if [ -z "$(echo $filename | grep $1)" ]; then
continue
fi
# Only echo this if debugging.
# echo "Extract $filename from archive to $out_dir/$1."
$ar p $lib_file $filename > $out_dir/$1
[ -s $out_dir/$1 ] || exit 1
break
done
}
for f in $obj_files; do
extract_object $f
done
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