Switch to new download format

pkg.info

@@ -7,4 +7,8 @@ license: MIT
 architecture: any
 depends: ["libxml2"]
 make_depends: ["libxml2","unzip"]
+downloads:
+  - url: "https://www.docbook.org/xml/${BPM_PKG_VERSION}/docbook-xml-${BPM_PKG_VERSION}.zip"
+    extract_to_bpm_source: true
+    checksum: 4e4e037a2b83c98c6c94818390d4bdd3f6e10f6ec62dd79188594e26190dc7b4
 type: source

source.sh

@@ -2,16 +2,6 @@
 # BPM Expects the source code to be extracted into the automatically created 'source' directory which can be accessed using $BPM_SOURCE
 # BPM Expects the output files to be present in the automatically created 'output' directory which can be accessed using $BPM_OUTPUT
 
-DOWNLOAD="https://www.docbook.org/xml/${BPM_PKG_VERSION}/docbook-xml-${BPM_PKG_VERSION}.zip"
-FILENAME="${DOWNLOAD##*/}"
-
-# The prepare function is executed in the root of the temp directory
-# This function is used for downloading files and putting them into the correct location
-prepare() {
-  wget "$DOWNLOAD"
-  unzip "$FILENAME" -d "$BPM_SOURCE"
-}
-
 # The package function is executed in the source directory
 # This function is used to move the compiled files into the output directory
 package() {