Add a upload directory transform script

This goes with the previous patch that moves uploads into segmented
subdirectories. To actually run, follow the DRYRUN instructions.

Signed-off-by: Dan McGee <dan@archlinux.org>
Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>

scripts/uploadbuckets.sh

@@ -0,0 +1,58 @@
+#!/bin/bash
+
+DRYRUN=${DRYRUN:-1}
+
+source="$1"
+dest="$2"
+
+if [[ -z $source || -z $dest ]]; then
+	echo 'usage: uploadbuckets.sh <source> <dest>'
+	echo 'Script runs in DRYRUN mode by default.'
+	echo 'To run for real, set DRYRUN=0 in your environment.'
+	exit 1
+fi
+
+if [[ ! -d $source ]]; then
+	echo 'error: source is not a directory'
+	exit 1
+fi
+
+if [[ -e $dest && ! -d $dest ]]; then
+	echo 'error: dest is not a directory'
+	exit 1
+fi
+
+if [[ $(readlink -e $dest) = $(readlink -e $source) ]]; then
+	echo 'error: source and dest cannot be the same. Rotate the result'
+	echo 'into place once the migration is complete.'
+	exit 1
+fi
+
+if [[ ! -d $dest ]]; then
+	mkdir $dest
+fi
+
+shopt -s nullglob
+
+for package in "$source"/*; do
+	pkgname="${package##*/}"
+	newfolder="$dest/${pkgname:0:2}"
+	if [[ ! -d "$newfolder" ]]; then
+		if [[ $DRYRUN -gt 0 ]]; then
+			echo mkdir -p "$newfolder"
+		else
+			mkdir -p "$newfolder"
+		fi
+	fi
+	if [[ $DRYRUN -gt 0 ]]; then
+		echo mv "$source/$pkgname" "$newfolder/$pkgname"
+	else
+		mv "$source/$pkgname" "$newfolder/$pkgname"
+	fi
+done
+
+if [[ $DRYRUN -gt 0 ]]; then
+	echo
+	echo 'DRYRUN mode was enabled.'
+	echo 'To run for real, set DRYRUN=0 in your environment.'
+fi