Scripted XML Editing using XSLT and Xpath Expressions (xmllint xsltproc)

bash_xml_edit.sh

# Requirements
# yum install libxml2 libxslt

set +H # disable history expansion

XML_CONTENT=$(cat <<'XML_CONTENT_HD'
<?xml version="1.0" encoding="UTF-8"?>

<confluence-configuration>
  <setupStep>complete</setupStep>
  <setupType>custom</setupType>
  <buildNumber>8100</buildNumber>
  <properties>
    <property name="admin.ui.allow.daily.backup.custom.location">true</property>
    <property name="admin.ui.allow.manual.backup.download">false</property>
    <property name="admin.ui.allow.site.support.email">false</property>
    <property name="atlassian.license.message">xxxxxxxxxxxxx</property>
    <property name="attachments.dir">/shared/jiraconffiles/confluence/attachments</property>
    <property name="confluence.setup.server.id">xxxxxxxxxxxxx</property>
    <property name="confluence.webapp.context.path"></property>
    <property name="hibernate.c3p0.acquire_increment">1</property>
    <property name="hibernate.c3p0.idle_test_period">100</property>
    <property name="hibernate.c3p0.max_size">60</property>
    <property name="hibernate.c3p0.max_statements">0</property>
    <property name="hibernate.c3p0.min_size">20</property>
    <property name="hibernate.c3p0.preferredTestQuery">select 1</property>
    <property name="hibernate.c3p0.timeout">30</property>
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="hibernate.connection.isolation">2</property>
    <property name="hibernate.connection.password">xxxxxxxxxxxxx</property>
    <property name="hibernate.connection.url">jdbc:mysql://xxxxxxxxxxxxx:3306/confluencedb</property>
    <property name="hibernate.connection.username">confluence</property>
    <property name="hibernate.database.lower_non_ascii_supported">true</property>
    <property name="hibernate.dialect">com.atlassian.confluence.impl.hibernate.dialect.MySQLDialect</property>
    <property name="hibernate.setup">true</property>
    <property name="jwt.private.key">xxxxxxxxxxxxx</property>
    <property name="jwt.public.key">xxxxxxxxxxxxx</property>
    <property name="lucene.index.dir">${localHome}/index</property>
    <property name="synchrony.encryption.disabled">true</property>
    <property name="synchrony.proxy.enabled">true</property>
    <property name="webwork.multipart.saveDir">${localHome}/temp</property>
  </properties>
</confluence-configuration>
XML_CONTENT_HD
)

MATCH_NODE="/confluence-configuration/properties/property[@name='attachments.dir']/text()"
REPLACEMENT_VALUE="/ASDFASDF/jiraconffiles/confluence/QWERQWERQWRE"

XSLT_CONTENT=$(cat <<XSLT_CONTENT_HD
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" encoding="UTF-8" omit-xml-declaration="no"/> 

<!-- copy all contents from the existing document -->
<xsl:template match="@*|node()">
    <xsl:copy>
        <xsl:apply-templates select="@*|node()"/>
    </xsl:copy>
</xsl:template>

<!-- modify the text of a specifically matched node -->
<xsl:template match="${MATCH_NODE}">
  <xsl:value-of select="'${REPLACEMENT_VALUE}'"/>
</xsl:template>

</xsl:stylesheet>
XSLT_CONTENT_HD
)

set -H # re-enable history expansion
echo "${XML_CONTENT}" | xmllint --xpath "${MATCH_NODE}" -
XML_CONTENT=$(echo "${XML_CONTENT}" | xsltproc <(echo "${XSLT_CONTENT}") -)
echo "${XML_CONTENT}" | xmllint --xpath "${MATCH_NODE}" -



echo "${XML_CONTENT}"
echo "${XSLT_CONTENT}"