cron-daily-adb-update

#!/bin/bash

#sudo apt-get install libxml2-utils

GetGoogleSourceFile () {
  [ "-$1" == "-" ] && return 1
  curl -s --compressed -G -d "format=text" --url "$GOOGLE_SOURCE_URL/${3:-platform/frameworks/base}/${2:-+/master}/$1" | base64 -d
}

GetRepositoryXmlURL () {
  local VARS=(NS_LATEST_VERSION URL_GOOGLE_SDK_SITE URL_FILENAME_PATTERN)
  local VARPATTERN=$(echo -n "\\(";for V in ${VARS[@]}; do echo -n $V; echo -n "\\|"; done; echo -n "DONE\\)") #"
  local REPOCONSTANTS=$(GetGoogleSourceFile "sdklib/src/main/java/com/android/sdklib/repository/SdkRepoConstants.java" "+/master" "platform/tools/base")
  eval $(echo "$REPOCONSTANTS" | tr '\n;' ' \n' | sed -e "s/${VARPATTERN}/\n\1/g" -e "s/%1\$d/\$${VARS[0]}/" | tr -d ' ' | sed -ne "/${VARPATTERN}=/p")
  eval echo \$${VARS[1]}\$${VARS[2]}
}

GetPackageURL () {
  [ "-$1" == "-" ] && return 1
  local OS="linux" # "macosx" "windows"
  local NAMESPACE="sdk"
  local RELEASE="revision[not(preview)]/.." # "revision[boolean(preview)]/.." ""
  local XPATH="(/sdk-repository/$1/$RELEASE/archives/archive/host-os[text()='$OS'])[last()]/../url/text()"
  echo -n "${REPOXMLURL%/*}/"
  curl -s --compressed --url $REPOXMLURL | sed 's/\(<\/\?\)$NAMESPACE:/\1/g' | xmllint --xpath "$XPATH" -
  return 0
}

PackageNeedsUpdating () {
  PREVIOUS_URL_FILE="$ANDROID_HOME/.$PACKAGE.url"
  [ -f $PREVIOUS_URL_FILE ] && PREVIOUS_URL=$(<$PREVIOUS_URL_FILE)
  [ "-$PREVIOUS_URL" == "-$PACKAGE_URL" ] && return 1
  return 0
}

DownloadAndUzip () {
  local TMP=$(mktemp)
  curl -s --url $PACKAGE_URL -o $TMP && unzip -qo $TMP -d $ANDROID_HOME && echo -n $PACKAGE_URL > $PREVIOUS_URL_FILE
  [ -f $TMP ] && rm $TMP
}

GOOGLE_SOURCE_URL="https://android.googlesource.com"
ANDROID_HOME="/opt/android"
REPOXMLURL=$(GetRepositoryXmlURL)
PACKAGE="platform-tool"
PACKAGE_URL=$(GetPackageURL $PACKAGE)

PackageNeedsUpdating && DownloadAndUzip

exit 0

cron-daily-sdk-update

#!/bin/bash

# REQUIRES: curl, unzip, xmlstarlet
# sudo apt-get install xmlstarlet # to install xmlstarlet on Debian/Ubuntu

Log () {
  [ -t 1 ] && echo -e "$1" 1>&2 && return 0
  echo -e $(date +"[%D %T] ")"$1" >> /var/log/android_sdk_update.log
}

GetRepositoryXML () {
  curl -s --compressed --url "${URL_GOOGLE_SDK_SITE}${URL_DEFAULT_FILENAME}" -R -o $REPOSITORYXML -z $REPOSITORYXML --create-dirs
}

GetPackageURL () {
  [[ -z $PKG ]] && return 1
  [[ $PKG == "lldb" ]] && local SORT="-s D:T:U ."
  local OS="(not(host-os) or host-os='linux') and (not(host-bits) or host-bits='64')"
  local REV=" and channelRef[@ref='channel-0']" # set this to "" to get the release candidates as well as final releases
  local XPATH="//remotePackage[(@path='$PKG' or starts-with(@path,'$PKG;'))$REV]/archives/archive[$OS]/complete/url"
  PKG_URL=${URL_GOOGLE_SDK_SITE}$(xmlstarlet sel -t -m "$XPATH" $SORT -v "." -n "$REPOSITORYXML" | head -n 1)
  [[ $PKG_URL == $URL_GOOGLE_SDK_SITE ]] && return 1
  return 0
}

CheckIfPackageNeedsUpdating () {
  [[ -z $PKG ]] && return 1
  [[ $PKG_URL == $URL_GOOGLE_SDK_SITE ]] && return 1
  PREV_URL_FILE="$ANDROID_HOME/.$PKG.url"
  [[ -f $PREV_URL_FILE ]] && PREV_URL=$(<$PREV_URL_FILE)
  [[ $PREV_URL != $PKG_URL ]] && return 0
  Log "No update needed. $PKG_URL is already installed."
  return 1
}

UnzipPackage () {
  [[ -f $PKG_ZIP ]] || return 1
  local ZIP_ROOT=$(unzip -l "$PKG_ZIP" | awk 'NR>3 && NF==4 {split($4,s,"/"); print s[1]}' | sort -u)
  local DEST="$ANDROID_HOME"
  [[ $(echo "$ZIP_ROOT" | wc -l) -gt 1 ]] && DEST="${DEST}/${PKG}" && [ -d "$DEST" ] && rm -rf "$DEST"
  [[ $DEST == $ANDROID_HOME ]] && [ -d "$DEST/$ZIP_ROOT" ] && rm -rf "$DEST/$ZIP_ROOT"
  mkdir -p "$DEST"
  unzip -qo "$PKG_ZIP" -d "$DEST"
}

DownloadAndUnzip () {
  [[ -z $PKG ]] && return 1
  [[ $PKG_URL == $URL_GOOGLE_SDK_SITE ]] && return 1
  Log "Downloading $PKG_URL"
  PKG_ZIP="$ANDROID_HOME/.zip/"$(basename $PKG_URL)
  curl -s --url "$PKG_URL" -R -o "$PKG_ZIP" -z "$PKG_ZIP" --create-dirs && UnzipPackage && echo -n "$PKG_URL" > "$PREV_URL_FILE"
}

URL_GOOGLE_SDK_SITE="https://dl.google.com/android/repository/"
URL_DEFAULT_FILENAME="repository2-1.xml"
ANDROID_HOME="${ANDROID_HOME:-/opt/android}"
REPOSITORYXML="$ANDROID_HOME/.$URL_DEFAULT_FILENAME"

GetRepositoryXML

#PACKAGES_TO_UPDATE=(build-tools cmake docs lldb ndk-bundle patcher platforms platform-tools sources tools)
PACKAGES_TO_UPDATE=(build-tools cmake platform-tools tools)

for PKG in ${PACKAGES_TO_UPDATE[@]}; do
  GetPackageURL && CheckIfPackageNeedsUpdating && DownloadAndUnzip
done

exit 0