diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/common.sh | 74 |
1 files changed, 64 insertions, 10 deletions
diff --git a/lib/common.sh b/lib/common.sh index b39bbbc..65d6d15 100644 --- a/lib/common.sh +++ b/lib/common.sh @@ -2,7 +2,7 @@ export LANG=C # check if messages are to be printed using color -unset ALL_OFF BOLD BLUE GREEN RED YELLOW +declare ALL_OFF= BOLD= BLUE= GREEN= RED= YELLOW= if [[ -t 2 ]]; then # prefer terminal safe colored and bold text when tput is supported if tput setaf 0 &>/dev/null; then @@ -40,12 +40,12 @@ msg2() { warning() { local mesg=$1; shift - printf "${YELLOW}==> WARNING:${ALL_OFF}${BOLD} ${mesg}${ALL_OFF}\n" "$@" >&2 + printf "${YELLOW}==> $(gettext "WARNING:")${ALL_OFF}${BOLD} ${mesg}${ALL_OFF}\n" "$@" >&2 } error() { local mesg=$1; shift - printf "${RED}==> ERROR:${ALL_OFF}${BOLD} ${mesg}${ALL_OFF}\n" "$@" >&2 + printf "${RED}==> $(gettext "ERROR:")${ALL_OFF}${BOLD} ${mesg}${ALL_OFF}\n" "$@" >&2 } stat_busy() { @@ -54,16 +54,22 @@ stat_busy() { } stat_done() { - printf "${BOLD}done${ALL_OFF}\n" >&2 + printf "${BOLD}$(gettext "done")${ALL_OFF}\n" >&2 } +_setup_workdir=false setup_workdir() { - [[ -z $WORKDIR ]] && WORKDIR=$(mktemp -d --tmpdir "${0##*/}.XXXXXXXXXX") + [[ -z ${WORKDIR:-} ]] && WORKDIR=$(mktemp -d --tmpdir "${0##*/}.XXXXXXXXXX") + _setup_workdir=true + trap 'trap_abort' INT QUIT TERM HUP + trap 'trap_exit' EXIT } cleanup() { - [[ -n $WORKDIR ]] && rm -rf "$WORKDIR" - [[ $1 ]] && exit $1 + if [[ -n ${WORKDIR:-} ]] && $_setup_workdir; then + rm -rf "$WORKDIR" + fi + [[ -n ${1:-} ]] && exit $1 } abort() { @@ -86,9 +92,6 @@ die() { cleanup 1 } -trap 'trap_abort' INT QUIT TERM HUP -trap 'trap_exit' EXIT - ## # usage : in_array( $needle, $haystack ) # return : 0 - found @@ -104,6 +107,57 @@ in_array() { } ## +# usage : lock_open_write( $fd, $path, $wait_message ) +## +lock_open_write() { + local fd=$1 + local path=$2 + local msg=$3 + + # Only reopen the FD if it wasn't handed to us + if [[ "$(readlink -f /dev/fd/$fd)" != "$(readlink -f "${path}.lock")" ]]; then + mkdir -p "${path%/*}" + eval "exec $fd>${path}.lock" + fi + + if ! flock -n $fd; then + stat_busy "$msg" + flock $fd + stat_done + fi +} + +## +# usage : lock_open_read( $fd, $path, $wait_message ) +## +lock_open_read() { + local fd=$1 + local path=$2 + local msg=$3 + + # Only reopen the FD if it wasn't handed to us + if [[ "$(readlink -f /dev/fd/$fd)" != "$(readlink -f "${path}.lock")" ]]; then + mkdir -p "${path%/*}" + eval "exec $fd>${path}.lock" + fi + + if ! flock -sn $fd; then + stat_busy "$msg" + flock -s $fd + stat_done + fi +} + + +## +# usage : lock_close( $fd ) +## +lock_close() { + local fd=$1 + eval "exec $fd>&-" +} + +## # usage : get_full_version( [$pkgname] ) # return : full version spec, including epoch (if necessary), pkgver, pkgrel ## |