This allows debootstrap to work on non-debian-based live boot instances that
don't have binutils installed.
Example: Arch Linux LiveCD
---
functions | 37 +++++++++++++++++++++++++++++++++++--
1 file changed, 35 insertions(+), 2 deletions(-)
diff --git a/functions b/functions
index 4e3955a..bbb1d41 100644
--- a/functions
+++ b/functions
@@ -785,7 +785,7 @@ get_debs () {
################################################################ extraction
-EXTRACTORS_SUPPORTED="dpkg-deb ar"
+EXTRACTORS_SUPPORTED="dpkg-deb ar bsdtar"
# Native dpkg-deb based extractors
extract_dpkg_deb_field () {
@@ -829,6 +829,33 @@ extract_ar_deb_data () {
fi
}
+extract_bsdtar_deb_field () {
+ local pkg="$1"
+ local field="$2"
+
+ bsdtar -O -xf "$pkg" control.tar.gz | zcat |
+ bsdtar -O -xf - control ./control 2>/dev/null |
+ grep -i "^$field:" | sed -e 's/[^:]*: *//' | head -n 1
+}
+
+extract_bsdtar_deb_data () {
+ local pkg="$1"
+ local tarball=$(bsdtar tf "$pkg" | grep "^data.tar.[bgx]z")
+
+ case "$tarball" in
+ data.tar.gz) cat_cmd=zcat ;;
+ data.tar.bz2) cat_cmd=bzcat ;;
+ data.tar.xz) cat_cmd=xzcat ;;
+ *) error 1 UNKNOWNDATACOMP "Unknown compression type for %s in
%s" "$tarball" "$pkg" ;;
+ esac
+
+ if type $cat_cmd >/dev/null 2>&1; then
+ bsdtar -O -xf "$pkg" "$tarball" | $cat_cmd | bsdtar -xf -
+ else
+ error 1 UNPACKCMDUNVL "Extracting %s requires the %s command,
which is not available" "$pkg" "$cat_cmd"
+ fi
+}
+
valid_extractor () {
local extractor="$1"
@@ -848,8 +875,10 @@ choose_extractor () {
extractor="$EXTRACTOR_OVERRIDE"
elif type dpkg-deb >/dev/null 2>&1; then
extractor="dpkg-deb"
- else
+ elif type ar >/dev/null 2>&1; then
extractor="ar"
+ else
+ extractor="bsdtar"
fi
info CHOSENEXTRACTOR "Chosen extractor for .deb packages: %s"
"$extractor"
@@ -862,6 +891,10 @@ choose_extractor () {
extract_deb_field () { extract_ar_deb_field "$@"; }
extract_deb_data () { extract_ar_deb_data "$@"; }
;;
+ bsdtar)
+ extract_deb_field () { extract_bsdtar_deb_field "$@"; }
+ extract_deb_data () { extract_bsdtar_deb_data "$@"; }
+ ;;
esac
}
--
1.9.2
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