# HG changeset patch
# User Titus von Boxberg <titus@v9g.de>
# Date 1321952890 -3600
# Node ID 9ee6a3a0f3ded7a6b8e0ecdc056f1ff685d3f320
# Parent  64fe22ca6e6f403b3cb90d2ae2b91b40a99d0d41
scripts/functions: extract: portable call for old and defective tars

Instead of using -J, --lzma, --use-compress-program or the like
use <compressor> -dc <file> | tar -f -

Signed-off-by: Titus von Boxberg <titus@v9g.de>
(transplanted from 49af7802dcd538ec3cb64337030b03ac2c6344d2)

diff -r 64fe22ca6e6f -r 9ee6a3a0f3de scripts/functions
--- a/scripts/functions	Fri Nov 18 11:32:50 2011 +0800
+++ b/scripts/functions	Tue Nov 22 10:08:10 2011 +0100
@@ -761,15 +761,15 @@
     # - so, if we get an lzma tarball, and either 'xz' or 'lzma' is
     #   missing, we can assume the other is available
     if [ "${CT_CONFIGURE_has_lzma}" = "y" ]; then
-        lzma_prog=lzma
+        lzma_prog="lzma -fdc"
     else
-        lzma_prog=xz
+        lzma_prog="xz -fdc"
     fi
     case "${ext}" in
-        .tar.xz)      CT_DoExecLog FILE tar "${tar_opts[@]}" --use-compress-program=xz -f "${full_file}";;
-        .tar.lzma)    CT_DoExecLog FILE tar "${tar_opts[@]}" --use-compress-program="${lzma_prog}" -f "${full_file}";;
-        .tar.bz2)     CT_DoExecLog FILE tar "${tar_opts[@]}" -j -f "${full_file}";;
-        .tar.gz|.tgz) CT_DoExecLog FILE tar "${tar_opts[@]}" -z -f "${full_file}";;
+        .tar.xz)      xz -fdc "${full_file}" | CT_DoExecLog FILE tar "${tar_opts[@]}" -f -;;
+        .tar.lzma)    ${lzma_prog} "${full_file}" | CT_DoExecLog FILE tar "${tar_opts[@]}" -f -;;
+        .tar.bz2)     bzip2 -dc "${full_file}" | CT_DoExecLog FILE tar "${tar_opts[@]}" -f -;;
+        .tar.gz|.tgz) gzip -dc "${full_file}" | CT_DoExecLog FILE tar "${tar_opts[@]}" -f -;;
         .tar)         CT_DoExecLog FILE tar "${tar_opts[@]}" -f "${full_file}";;
         /.git)        CT_ExtractGit "${basename}" "${@}";;
         *)            CT_DoLog WARN "Don't know how to handle '${basename}${ext}': unknown extension"