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#!/bin/echo run this from "make root"
# Plumbing to download files
[ -z "$ROOT" ] && echo "no" && exit 1
mkdir -p "${DOWNLOAD:=$PWD/root_download}" || exit 1
### Functions to download, extract, and clean up after source packages.
# Usage: download HASH URL
# Grabs source from URL confirming SHA1 hash (Basically "wget $2")
# If extracted source is in $DOWNLOAD (no version) build will use that instead
download() {
local FILE="$(basename "$2")" WGET=wget
[ -d "$DOWNLOAD/${FILE/-*/}" ] && echo "$FILE" local && return 0
X=0; while true; do
[ "$(sha1sum < "$DOWNLOAD/$FILE" 2>/dev/null)" == "$1 -" ] &&
echo "$FILE" confirmed && break
rm -f $DOWNLOAD/${FILE/-[0-9]*/}-[0-9]* || exit 1
[ $X -eq 0 ] && X=1 || [ $X -eq 1 ] && X=2 WGET=/usr/bin/wget || exit 1
$WGET "$2" -O "$DOWNLOAD/$FILE"
done
}
# Usage: setupfor PACKAGE
# Extracts source tarball (or snapshot a repo) to create disposable build dir.
# Basically "tar xvzCf $MYBUILD $DOWNLOAD/$1.tar.gz && cd $NEWDIR"
setupfor() {
PACKAGE="$(basename "$1")"
announce "$PACKAGE" && cd "$MYBUILD" && rm -rf "$PACKAGE" || exit 1
if [ -d "$DOWNLOAD/$PACKAGE" ]; then
cp -la "$DOWNLOAD/$PACKAGE/." "$PACKAGE" && cd "$PACKAGE" || exit 1
else
tar xvaf "$DOWNLOAD/$PACKAGE"-*.t* && cd "$PACKAGE"-* || exit 1
fi
}
# Usage: cleanup
# Delete setupfor's dir, exiting if build failed (basically "rm -rf $PACKAGE")
cleanup() {
[ $? -ne 0 ] && exit 1
[ -z "$PACKAGE" ] && exit 1
[ ! -z "$NO_CLEANUP" ] && return
cd .. && rm -rf "$PACKAGE"* || exit 1
}