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+#!/bin/bash
+#
+# rankmirrors - read a list of mirrors from a file and rank them by speed
+# @configure_input@
+#
+# Copyright (c) 2009 Matthew Bruenig <matthewbruenig@gmail.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+# traps interrupt key to spit out pre-interrupt info
+trap finaloutput INT
+
+usage() {
+ echo "Usage: rankmirrors [options] MIRRORFILE | URL"
+ echo
+ echo "Ranks pacman mirrors by their connection and opening speed. Pacman mirror"
+ echo "files are located in @sysconfdir@/pacman.d/. It can also rank one mirror if the URL is"
+ echo "provided."
+ echo
+ echo "Options:"
+ echo " --version show program's version number and exit"
+ echo " -h, --help show this help message and exit"
+ echo " -n NUM number of servers to output, 0 for all"
+ echo " -t, --times only output mirrors and their response times"
+ echo " -u, --url test a specific url"
+ echo " -v, --verbose be verbose in ouptut"
+ echo " -r, --repo specify a specific repo name instead of guessing"
+ exit 0
+}
+
+version() {
+ echo "rankmirrors (pacman) @PACKAGE_VERSION@"
+ echo "Copyright (c) 2009 Matthew Bruenig <matthewbruenig@gmail.com>."
+ echo
+ echo "This is free software; see the source for copying conditions."
+ echo "There is NO WARRANTY, to the extent permitted by law."
+ exit 0
+}
+
+err() {
+ echo "$1" >&2
+ exit 1
+}
+
+# gettime fetchurl (e.g gettime http://foo.com/core/os/i686/core.db.tar.gz)
+# returns the fetching time, or timeout, or unreachable
+gettime() {
+ IFS=' ' output=( $(curl -s -m 10 -w "%{time_total} %{http_code}" "$1" -o/dev/null) )
+ (( $? == 28 )) && echo timeout && return
+ (( ${output[1]} >= 400 || ! ${output[1]} )) && echo unreachable && return
+ echo "${output[0]}"
+}
+
+# getfetchurl serverurl (e.g. getturl http://foo.com/core/os/i686)
+# if $repo is in the line, then assumes core
+# if $arch is in the line, then assumes $(uname -m)
+# returns a fetchurl (e.g. http://foo.com/core/os/i686/core.db.tar.gz)
+ARCH="$(uname -m)"
+getfetchurl() {
+ local strippedurl="${1%/}"
+
+ local replacedurl="${strippedurl//'$arch'/$ARCH}"
+ if [[ ! $TARGETREPO ]]; then
+ replacedurl="${replacedurl//'$repo'/core}"
+ local tmp="${replacedurl%/*}"
+ tmp="${tmp%/*}"
+
+ local reponame="${tmp##*/}"
+ else
+ replacedurl="${replacedurl//'$repo'/$TARGETREPO}"
+ local reponame="$TARGETREPO"
+ fi
+
+ if [[ -z $reponame || $reponame = $replacedurl ]]; then
+ echo "fail"
+ else
+ local fetchurl="${replacedurl}/$reponame.db"
+ echo "$fetchurl"
+ fi
+}
+
+# This exists to remove the need for a separate interrupt function
+finaloutput() {
+ IFS=$'\n' read -r -d '' -a sortedarray < \
+ <(printf '%s\n' "${timesarray[@]}" | LC_COLLATE=C sort)
+
+ # Final output for mirrorfile
+ numiterator="0"
+ if [[ $TIMESONLY ]]; then
+ echo
+ echo " Servers sorted by time (seconds):"
+ for line in "${sortedarray[@]}"; do
+ echo "${line#* } : ${line% *}"
+ ((numiterator++))
+ (( NUM && numiterator >= NUM )) && break
+ done
+ else
+ for line in "${sortedarray[@]}"; do
+ echo "Server = ${line#* }"
+ ((numiterator++))
+ (( NUM && numiterator >= NUM )) && break
+ done
+ fi
+ exit 0
+}
+
+
+# Argument parsing
+[[ $1 ]] || usage
+while [[ $1 ]]; do
+ if [[ ${1:0:2} = -- ]]; then
+ case "${1:2}" in
+ help) usage ;;
+ version) version ;;
+ times) TIMESONLY=1 ; shift ;;
+ verbose) VERBOSE=1 ; shift ;;
+ url) CHECKURL=1; [[ $2 ]] || err "Must specify url."; URL="$2"; shift 2;;
+ repo) [[ $2 ]] || err "Must specify repo name."; TARGETREPO="$2"; shift 2;;
+ *) err "\`$1' is an invalid argument."
+ esac
+ elif [[ ${1:0:1} = - ]]; then
+
+ if [[ ! ${1:1:1} ]]; then
+ [[ -t 0 ]] && err "Stdin is empty."
+ IFS=$'\n' linearray=( $(</dev/stdin) )
+ STDIN=1
+ shift
+ else
+ snum=1
+ for ((i=1 ; i<${#1}; i++)); do
+ case ${1:$i:1} in
+ h) usage ;;
+ t) TIMESONLY=1 ;;
+ v) VERBOSE=1 ;;
+ u) CHECKURL=1; [[ $2 ]] || err "Must specify url."; URL="$2"; snum=2;;
+ r) [[ $2 ]] || err "Must specify repo name."; TARGETREPO="$2"; snum=2;;
+ n) [[ $2 ]] || err "Must specify number." ; NUM="$2" ; snum=2;;
+ *) err "\`-$1' is an invald argument." ;;
+ esac
+ done
+ shift $snum
+ fi
+ elif [[ -f $1 ]]; then
+ FILE="1"
+ IFS=$'\n' linearray=( $(<$1) )
+ [[ $linearray ]] || err "File is empty."
+ shift
+ else
+ err "\`$1' does not exist."
+ fi
+done
+
+# Some sanity checks
+[[ $NUM ]] || NUM=0
+[[ $FILE && $CHECKURL ]] && err "Cannot specify a url and mirrorfile."
+[[ $FILE || $CHECKURL || $STDIN ]] || err "Must specify url, mirrorfile, or stdin."
+
+# Single url handling
+if [[ $CHECKURL ]]; then
+ url="$(getfetchurl "$URL")"
+ [[ $url = fail ]] && err "url \`$URL' is malformed."
+ [[ $VERBOSE ]] && echo "Testing $url..."
+ time=$(gettime "$url")
+ echo "$URL : $time"
+ exit 0
+fi
+
+# Get url results from mirrorfile, fill up the array, and so on
+if [[ $TIMESONLY ]]; then
+ echo "Querying servers, this may take some time..."
+elif [[ $FILE ]]; then
+ echo "# Server list generated by rankmirrors on $(date +%Y-%m-%d)"
+fi
+
+timesarray=()
+for line in "${linearray[@]}"; do
+ if [[ $line =~ ^[[:space:]]*# ]]; then
+ [[ $TIMESONLY ]] || echo $line
+ elif [[ $line =~ ^[[:space:]]*Server ]]; then
+
+ # Getting values and times and such
+ server="${line#*= }"
+ server="${server%%#*}"
+ url="$(getfetchurl "$server")"
+ [[ $url = fail ]] && err "url \`$URL' is malformed."
+ time=$(gettime "$url")
+ timesarray+=("$time $server")
+
+ # Output
+ if [[ $VERBOSE && $TIMESONLY ]]; then
+ echo "$server ... $time"
+ elif [[ $VERBOSE ]]; then
+ echo "# $server ... $time"
+ elif [[ $TIMESONLY ]]; then
+ echo -n " *"
+ fi
+ fi
+done
+finaloutput
+
+# vim: set ts=2 sw=2 noet: