copydlldeps.sh

#!/bin/sh
#
# Copyright (c) 2014 Tiancheng "Timothy" Gu
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject
# to the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

OBJDUMP=objdump

tmp=`mktemp -d`

help() {
    cat <<EOF >&2
Usage: $0 -c    -d DEST -s SRC [-f FILE|-F DIR]
  or:  $0 -p                   [-f FILE|-F DIR]
  or:  $0 -c -p -d DEST -s SRC [-f FILE|-F DIR]
Copy executable FILE(s) and their DLL dependencies for SRC directory to a
DEST directory, and/or print the recursive dependencies.

Operating modes:
  -c, --copy

Operating options:
  -d, --destdir           Destination directory
  -f, --infile            The input executable file or DLL.
  -F, --infiles, --indir  The input directory of executable files and/or DLLs.
  -s, --srcdir            The directory with DLLs that can be copied.

Other options:
  -h, --help              Display this message and exit
EOF
}

die() {
    echo $1 >&2
    rm -rf "$tmp"
    help
    exit 1
}

while [ $# -gt 1 ]; do
    key="$1"
    shift

    case $key in
    -f|--infile)
        infile="$1"
        shift
        ;;
    -F|--indir|--infiles)
        indir="$1"
        shift
        ;;
    -s|--srcdir)
        srcdir="$1"
        shift
        ;;
    -d|--destdir)
        destdir="$1"
        shift
        ;;
    -h|--help)
        help
        exit 0
        ;;
    *)
        echo "unknown option $key ignored" >&2
        ;;
    esac
done

if [ "$indir" ] && [ "$infile" ]; then
    die '--indir and --infile are mutually exclusive.'
elif ! [ "$indir" ] && ! [ "$infile" ]; then
    die 'Neither --indir nor --infile is specified.'
fi

if ! [ "$destdir" ]; then
    die '--destdir is not specified.'
fi
if ! [ "$srcdir"  ]; then
    die '--srcdir is not specified.'
fi

if [ "$indir" ]; then
    filelist=`find $indir -iregex '.*\(dll\|exe\)' | tr '\n' ' '`
else
    filelist="$infile"
fi

if [ -n "$(ls -A $destdir 2>/dev/null)" ]; then
    echo 'Warning: --destdir already exists and contains files.' >&2
fi

mkdir -p "$destdir"

append_deps() {
    local bn="`basename $1`"
    if [ -e "$tmp/$bn" ]; then
        return 0
    fi
    if [ $# -eq 2 ]; then
        path="$1"
    else
        path="${srcdir}/$1"
    fi
    echo "Processing $1" >&2
    if ! [ -e "$path" ]; then
        touch "$tmp/$bn"
        return 0
    fi
    $OBJDUMP -p "$path" | grep 'DLL Name:' | cut -f3 -d' ' > "$tmp/$bn"
    for dll in `cat "$tmp/$bn" | tr '\n' ' '`; do
        append_deps "$dll"
    done
    alldeps=$(printf "$alldeps\n%s" "$(cat $tmp/$bn)" |
              sort | uniq)
}

for f in $filelist; do
    append_deps "$f" rel
done

for dll in `echo $alldeps | tr '\n' ' '`; do
    if [ -e "${srcdir}/${dll}" ]; then
        cp "${srcdir}/${dll}" "$destdir"
    else
        echo "Warning: \"$dll\" not found." >&2
    fi
done

rm -rf "$tmp"