Android SDK install add-ons from command line

addon2package.xslt

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:sdk="http://schemas.android.com/sdk/android/addon/7"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:common="http://schemas.android.com/repository/android/common/01"
    xmlns:addon2="http://schemas.android.com/sdk/android/repo/addon2/01">

    <xsl:output omit-xml-declaration="no" indent="yes" encoding="UTF-8" standalone="yes"/>

    <xsl:template match="/sdk:sdk-addon">
        <common:repository>
            <xsl:apply-templates />
        </common:repository>
    </xsl:template>

    <xsl:template match="sdk:add-on">
        <localPackage obsolete="false">
            <xsl:attribute name="path">add-ons;addon-<xsl:value-of select="sdk:name-id" />-<xsl:value-of select="sdk:vendor-id" />-<xsl:value-of select="sdk:api-level" />
            </xsl:attribute>
            <type-details xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="addon2:addonDetailsType">
                <api-level><xsl:value-of select="sdk:api-level" /></api-level>
                <vendor>
                    <id><xsl:value-of select="sdk:vendor-id" /></id>
                    <display><xsl:value-of select="sdk:vendor-display" /></display>
                </vendor>
                <tag>
                    <id><xsl:value-of select="sdk:name-id" /></id>
                    <display><xsl:value-of select="sdk:name-display" /></display>
                </tag>
                <libraries>
                    <xsl:for-each select="sdk:libs/sdk:lib">
                        <xsl:apply-templates select="." />
                    </xsl:for-each>
                </libraries>
            </type-details>
            <revision>
                <major><xsl:value-of select="sdk:revision" /></major>
            </revision>
            <display-name><xsl:value-of select="name-display" /></display-name>
        </localPackage>
    </xsl:template>

    <xsl:template match="sdk:lib">
        <library>
            <xsl:attribute name="name">
                <xsl:value-of select="sdk:name" />        
            </xsl:attribute>
            <xsl:if test="sdk:localJarPath">
                <xsl:attribute name="localJarPath">
                    <xsl:value-of select="sdk:localJarPath" />        
                </xsl:attribute>
            </xsl:if>
            <description><xsl:value-of select="sdk:description" /></description>
        </library>
    </xsl:template>

    <xsl:template match="license|channel">
        <xsl:copy-of select="." />
    </xsl:template>
</xsl:stylesheet>

install_android_sdk_addon.sh

#!/usr/bin/env bash

# validation
if [ -z "${ANDROID_SDK_HOME+x}" ]; then
	echo "ANDROID_SDK_HOME not defined! Please make sure that android-ndk installed & ANDROID_SDK_HOME set"
    exit 1
fi

REPOSITORY_URL=${1:-missing_url}
echo "REPOSITORY_URL=${REPOSITORY_URL}"
wget "$REPOSITORY_URL/addon.xml" -P "$TMPDIR"

# parse addon-xml
ADDON_XPATH="/*[local-name()='sdk-addon']/*[local-name()='add-on']"
VENDOR_ID=$(xmllint --xpath "${ADDON_XPATH}/*[local-name()='vendor-id']/text()" "$TMPDIR/addon.xml")
NAME_ID=$(xmllint --xpath "${ADDON_XPATH}/*[local-name()='name-id']/text()" "$TMPDIR/addon.xml")
API_LEVEL=$(xmllint --xpath "${ADDON_XPATH}/*[local-name()='api-level']/text()" "$TMPDIR/addon.xml")
ADDON_ZIP=$(xmllint --xpath "${ADDON_XPATH}/*[local-name()='archives']/*[local-name()='archive']/*[local-name()='url']/text()" "$TMPDIR/addon.xml")
ADDON_SDK_PATH="$ANDROID_SDK_HOME/add-ons/addon-${NAME_ID}-${VENDOR_ID}-${API_LEVEL}"

# download
wget "$REPOSITORY_URL/$ADDON_ZIP" -P "$TMPDIR"

# verify
EXPECTED_CHECKSUM=$(xmllint --xpath "${ADDON_XPATH}/*[local-name()='archives']/*[local-name()='archive']/*[local-name()='checksum']/text()" "$TMPDIR/addon.xml")
CHECKSUM_ALG=$(xmllint --xpath "string(${ADDON_XPATH}/*[local-name()='archives']/*[local-name()='archive']/*[local-name()='checksum']/@type)" "$TMPDIR/addon.xml")
ACTUAL_CHECKSUM=$(openssl "$CHECKSUM_ALG" < "$TMPDIR/$ADDON_ZIP")

if [ "$EXPECTED_CHECKSUM" != "$ACTUAL_CHECKSUM" ]; then
  	echo "Checksum verification failed expected:${EXPECTED_CHECKSUM} actual:${ACTUAL_CHECKSUM}"
  	exit 1
fi

# install
unzip "$TMPDIR/$ADDON_ZIP" -d "$TMPDIR"

mkdir -p "$ADDON_SDK_PATH"
mv "$TMPDIR"/*_addon-*/* "$ADDON_SDK_PATH/"

xsltproc "$(dirname "$0")/addon2package.xslt" "$TMPDIR/addon.xml" > "$ADDON_SDK_PATH/package.xml"