gentoo-cleaner-0.0.2

#!/bin/bash

# gentoo-cleaner-0.0.2
# System config

ARCH="$(uname -m)"
TMP_DIR="/tmp/garbage"
TMP_RESULT="/var/log/garbage.log"

# Packages
TMP_PACKAGE_PREFIX="package_files"
TMP_PACKAGE_FILES="$TMP_DIR/${TMP_PACKAGE_PREFIX}"
TMP_PACKAGE_FILES_SORT="$TMP_DIR/${TMP_PACKAGE_PREFIX}_sort"
TMP_PACKAGE_FILES_RESULT="$TMP_DIR/${TMP_PACKAGE_PREFIX}_result"

# System
TMP_SYSTEM_PREFIX="system_files"
TMP_SYSTEM_FILES="$TMP_DIR/${TMP_SYSTEM_PREFIX}"
TMP_SYSTEM_FILES_SORT="$TMP_DIR/${TMP_SYSTEM_PREFIX}_sort"
TMP_SYSTEM_FILES_SORT="$TMP_DIR/${TMP_SYSTEM_PREFIX}_result"

if [ "${ARCH}" = "x86_64" ]; then
    INCLUDE_PATH="/bin/ /etc/ /lib32/ /lib64/ /opt/ /sbin/ /usr/"
    EXCLUDE_PATH="
        /etc/local.d/
        /etc/portage/
        /etc/runlevels/
        /lib64/modules
        /usr/local/
        /usr/portage/
        /usr/src/
        "
    TMP_PACKAGE_FILES_SORT_LIB64="${TMP_PACKAGE_FILES_SORT}_lib64"
    TMP_PACKAGE_FILES_SORT_LIB64_USR_LIB64="${TMP_PACKAGE_FILES_SORT}_lib64_usr_lib64"
else
    INCLUDE_PATH="/bin/ /etc/ /lib/ /opt/ /sbin/ /usr/"
    EXCLUDE_PATH="
        /etc/local.d/
        /etc/portage/
        /etc/runlevels/
        /lib/modules/
        /usr/local/
        /usr/portage/
        /usr/src/
        "
fi


mkdir "${TMP_DIR}" 2> /dev/null

find /var/db/pkg/ -name CONTENTS -exec cat {} \; >> "$TMP_PACKAGE_FILES"
awk '/^\/usr\/src/{print $2}' "$TMP_PACKAGE_FILES" | sort -u > "$TMP_PACKAGE_FILES_SORT"
if [ "${ARCH}" = "x86_64" ]; then
    cat "$TMP_PACKAGE_FILES_SORT" | sed "s/^\/lib\//\/lib64\//g" > $TMP_PACKAGE_FILES_SORT_LIB64
    cat "$TMP_PACKAGE_FILES_SORT_LIB64" | sed "s/^\/usr\/lib\//\/usr\/lib64\//g" > $TMP_PACKAGE_FILES_SORT_LIB64_USR_LIB64
    cat "$TMP_PACKAGE_FILES_SORT_LIB64_USR_LIB64" | sort -u > "$TMP_PACKAGE_FILES_RESULT"
else
    cp "$TMP_PACKAGE_FILES_SORT" "$TMP_PACKAGE_FILES_RESULT"
fi

find $INCLUDE_PATH > $TMP_SYSTEM_FILES

TMP_SORT="cat $TMP_SYSTEM_FILES"
for E in $EXCLUDE_PATH ; do
    TMP_SORT="$TMP_SORT | grep -v \"^$E\""
done

eval "$TMP_SORT" | sort -u > $TMP_SYSTEM_FILES_SORT
diff "$TMP_SYSTEM_FILES_SORT" "$TMP_PACKAGE_FILES_RESULT" | grep "^<" | sed "s/^< //g" > "$TMP_RESULT"
rm -rf "$TMP_DIR"