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-rwxr-xr-xsystem-build/functions/cache.sh63
1 files changed, 63 insertions, 0 deletions
diff --git a/system-build/functions/cache.sh b/system-build/functions/cache.sh
new file mode 100755
index 0000000..467a674
--- /dev/null
+++ b/system-build/functions/cache.sh
@@ -0,0 +1,63 @@
+#!/bin/sh
+
+## live-build(7) - System Build Scripts
+## Copyright (C) 2006-2015 Daniel Baumann <mail@daniel-baumann.ch>
+##
+## This program comes with ABSOLUTELY NO WARRANTY; for details see COPYING.
+## This is free software, and you are welcome to redistribute it
+## under certain conditions; see COPYING for details.
+
+
+Restore_cache ()
+{
+ DIRECTORY="${1}"
+
+ if [ "${LB_CACHE}" = "true" ] && [ "${LB_CACHE_PACKAGES}" = "true" ]
+ then
+ if [ -e "${DIRECTORY}" ]
+ then
+ # Restore old cache
+ if [ "$(stat --printf %d ${DIRECTORY}/)" = "$(stat --printf %d chroot/var/cache/apt/archives/)" ]
+ then
+ # with hardlinks
+ find "${DIRECTORY}" -name "*.deb" | xargs cp -fl -t chroot/var/cache/apt/archives
+ else
+ # without hardlinks
+ find "${DIRECTORY}" -name "*.deb" | xargs cp -t chroot/var/cache/apt/archives
+ fi
+ fi
+ fi
+}
+
+Save_cache ()
+{
+ DIRECTORY="${1}"
+
+ if [ "${LB_CACHE}" = "true" ] && [ "${LB_CACHE_PACKAGES}" = "true" ]
+ then
+ # Cleaning current cache
+ # In case of interrupted or incomplete builds, this may return an error,
+ # but we still do want to save the cache.
+ Chroot chroot "apt-get autoclean" || true
+
+ if ls chroot/var/cache/apt/archives/*.deb > /dev/null 2>&1
+ then
+ # Creating cache directory
+ mkdir -p "${DIRECTORY}"
+
+ # Saving new cache
+ for PACKAGE in chroot/var/cache/apt/archives/*.deb
+ do
+ if [ -e "${DIRECTORY}"/"$(basename ${PACKAGE})" ]
+ then
+ rm -f "${PACKAGE}"
+ else
+ mv "${PACKAGE}" "${DIRECTORY}"
+ fi
+ done
+ fi
+ else
+ # Purging current cache
+ rm -f chroot/var/cache/apt/archives/*.deb
+ fi
+}