Download and update OpenSceneryX from https://www.opensceneryx.com

opensceneryx.sh

#!/bin/bash -eu
# Download and update OpenSceneryX from https://www.opensceneryx.com

target="${1:-}"
if [ -z "$target" ]; then
	echo "usage: $0 <target dir>" >&2
	exit 1
fi

if [ ! -d "$target" ]; then
	echo "target is not a directory: $target" >&2
	exit 1
fi

manifest="$target/manifest.xml"
if [ -f "$manifest" ]; then
	echo "Using manifest: $manifest" >&2
else
	echo "Download manifest" >&2
	curl -o "${manifest}.zip" https://downloads.opensceneryx.com/manifest.xml.zip
	unzip -d "$(dirname "$manifest")" "${manifest}.zip"
	rm -f "${manifest}.zip"
fi

stylesheet=$(mktemp)
cat <<EOF > "$stylesheet"
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
   <xsl:output method="text" indent="no"/>

   <xsl:template match="xmldict">
      <xsl:apply-templates select="key" />
   </xsl:template>

   <xsl:template match="xmldict/key">
      <xsl:value-of select="." />

      <xsl:text>|</xsl:text>
      <!-- reference https://devhints.io/xpath -->
      <xsl:apply-templates select="./following-sibling::dict[1]/key[text()='size']/following-sibling::integer[1]/text()" />

      <xsl:text>|</xsl:text>
      <xsl:apply-templates select="./following-sibling::dict[1]/key[text()='digest']/following-sibling::string[1]/text()" />
      <xsl:value-of select="'&#10;'" />
   </xsl:template>
</xsl:stylesheet>
EOF

xsltproc --novalid "$stylesheet" "$manifest" | while read line; do
	IFS="|" read -ra arr <<<"$line"

	path="${arr[0]}"
	file="$target$path"
	if [ -f "$file" ]; then
		size=$(stat -f '%z' "$file")
		if [ "$size" == "${arr[1]}" ]; then
			digest=$(md5 -q "$file" | tr '[:lower:]' '[:upper:]')
			if [ "$digest" == "${arr[2]}" ]; then
				echo "uptodate: $file"
				continue
			fi
		fi
	fi

	echo "download: $path"
	mkdir -p "$(dirname "$file")"
	curl -s -o "$file.zip" https://downloads.opensceneryx.com/repository$path.zip
	unzip -q -d "$(dirname "$file")" "$file.zip"
	rm -f "$file.zip"
done

rm -f "$stylesheet"

echo
echo "Download / update complete"
echo "Please consider visiting https://www.opensceneryx.com to Donate to support OpenSceneryX"