Merge pull request #406 from radarhere/untar

MRG: Fixed untar for .xz

Make sure that we can unpack xz code archives, but installing xz as necessary.

common_utils.sh

@@ -200,7 +200,14 @@ function untar {
         gz|tgz) tar -zxf $in_fname ;;
         bz2) tar -jxf $in_fname ;;
         zip) unzip -qq $in_fname ;;
-        xz) unxz -c $in_fname | tar -xf ;;
+        xz) if [ -n "$IS_MACOS" ]; then
+              tar -xf $in_fname
+            else
+              if [[ ! $(type -P "unxz") ]]; then
+                echo xz must be installed to uncompress file; exit 1
+              fi
+              unxz -c $in_fname | tar -xf -
+            fi ;;
         *) echo Did not recognize extension $extension; exit 1 ;;
     esac
 }
@@ -233,6 +240,12 @@ function fetch_unpack {
     if [ -z "$url" ];then echo "url not defined"; exit 1; fi
     local archive_fname=${2:-$(basename $url)}
     local arch_sdir="${ARCHIVE_SDIR:-archives}"
+    if [ -z "$IS_MACOS" ]; then
+        local extension=${archive_fname##*.}
+        if [ "$extension" == "xz" ]; then
+            ensure_xz
+        fi
+    fi
     # Make the archive directory in case it doesn't exist
     mkdir -p $arch_sdir
     local out_archive="${arch_sdir}/${archive_fname}"

library_builders.sh

@@ -237,8 +237,12 @@ function build_xz {
 
 function ensure_xz {
 	if [[ ! $(type -P "xz") ]]; then
+	    if [ -n "$IS_MACOS" ]; then
+	        brew install xz
+	    else
 	        build_xz
 	    fi
+	fi
 }
 
 function build_libwebp {

tests/test_library_builders.sh

@@ -21,6 +21,9 @@ source tests/utils.sh
 
 start_spinner
 
+fetch_unpack https://github.com/harfbuzz/harfbuzz/releases/download/2.7.4/harfbuzz-2.7.4.tar.xz
+[ -d harfbuzz-2.7.4 ] || ingest ".tar.xz should have been unpacked"
+
 suppress build_bzip2
 suppress build_openssl
 suppress build_libpng