diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/common.sh | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/lib/common.sh b/lib/common.sh index 1baab9c..dff9b43 100644 --- a/lib/common.sh +++ b/lib/common.sh @@ -1,6 +1,8 @@ # Avoid any encoding problems export LANG=C +shopt -s extglob + # check if messages are to be printed using color declare ALL_OFF= BOLD= BLUE= GREEN= RED= YELLOW= if [[ -t 2 ]]; then @@ -184,3 +186,75 @@ lock_close() { local fd=$1 eval "exec $fd>&-" } + +## +# usage: pkgver_equal( $pkgver1, $pkgver2 ) +## +pkgver_equal() { + local left right + + if [[ $1 = *-* && $2 = *-* ]]; then + # if both versions have a pkgrel, then they must be an exact match + [[ $1 = "$2" ]] + else + # otherwise, trim any pkgrel and compare the bare version. + [[ ${1%%-*} = "${2%%-*}" ]] + fi +} + +## +# usage: find_cached_package( $pkgname, $pkgver, $arch ) +# +# $pkgver can be supplied with or without a pkgrel appended. +# If not supplied, any pkgrel will be matched. +## +find_cached_package() { + local searchdirs=("$PWD" "$PKGDEST") results=() + local targetname=$1 targetver=$2 targetarch=$3 + local dir pkg pkgbasename pkgparts name ver rel arch size r results + + for dir in "${searchdirs[@]}"; do + [[ -d $dir ]] || continue + + for pkg in "$dir"/*.pkg.tar?(.?z); do + [[ -f $pkg ]] || continue + + # avoid adding duplicates of the same inode + for r in "${results[@]}"; do + [[ $r -ef $pkg ]] && continue 2 + done + + # split apart package filename into parts + pkgbasename=${pkg##*/} + pkgbasename=${pkgbasename%.pkg.tar?(.?z)} + + arch=${pkgbasename##*-} + pkgbasename=${pkgbasename%-"$arch"} + + rel=${pkgbasename##*-} + pkgbasename=${pkgbasename%-"$rel"} + + ver=${pkgbasename##*-} + name=${pkgbasename%-"$ver"} + + if [[ $targetname = "$name" && $targetarch = "$arch" ]] && + pkgver_equal "$targetver" "$ver-$rel"; then + results+=("$pkg") + fi + done + done + + case ${#results[*]} in + 0) + return 1 + ;; + 1) + printf '%s\n' "$results" + return 0 + ;; + *) + error 'Multiple packages found:' + printf '\t%s\n' "${results[@]}" >&2 + return 1 + esac +} |