otp.update.installs

#!/bin/bash -e
# ========================================================================
# Copyright (c) 2015-2019 T. R. Burghart
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
# ========================================================================

readonly  rdir="$(pwd)"
readonly  sdir="$(cd "$(dirname "$0")" && pwd)"
readonly  sname="${0##*/}"
readonly  spath="$sdir/$sname"

declare  -r otp_source_repo='https://github.com/erlang/otp.git'
declare  -r otp_dest_repos="${OTP_UPDATE_REPOS}"
declare -i  otp_vsn_min="${OTP_UPDATE_MIN_VSN}"

usage_exit()
{
    echo 'Usage:' "$sname" '[options]' >&2
    echo 'Options:' >&2
    # keep options in sync with 'otp.replace.as'
    echo '    -h{0|1|2} 0=without HiPE, 1=with HiPE, 2=both, default auto' >&2
    echo '    -d{0|1}   0=force docs off, 1=force docs on, default auto' >&2
    echo '    -p{0|1}   0=force PLT off, 1=force PLT on, default auto' >&2
    exit 1
}

declare -a replace_flags

for opt in "$@"
do
    case "$opt" in
        -d[01])
            replace_flags[0]="$opt" ;;
        -h[012])
            replace_flags[1]="$opt" ;;
        -p[01])
            replace_flags[2]="$opt" ;;
        *)  echo "$sname: error: illegal option '$opt'" >&2
            usage_exit ;;
    esac
done
readonly replace_flags

[[ -n "$GIT" && -f "$GIT" && -x "$GIT" ]] || GIT="$(type -P git)"
if [[ -z "$GIT" ]]
then
    echo "$sname: error: git executable not found." >&2
    exit 1
fi
export GIT

if [[ -n "$network_restrict" ]]
then
    ipcfg='/usr/sbin/ipconfig'
    if_match=false
    for tmp in $network_restrict
    do
        case "$tmp" in
            *:*)
                if_name="${tmp%%:*}"
                if_patt="${tmp#*:}"
                if [[ "$("$ipcfg" getifaddr "$if_name")" == $if_patt ]]
                then
                    if_match=true
                    break
                fi
                ;;
            *)
                if [[ -z "$if_list" ]]
                then
                    if_cnt="$("$ipcfg" ifcount)"
                    if_cur=0
                    while [[ $if_cur -lt $if_cnt ]]
                    do
                        if_list+=" $("$ipcfg" getifaddr en$if_cur || true) "
                        let 'if_cur += 1'
                    done
                fi
                if [[ "$if_list" == *" $tmp "* ]]
                then
                    if_match=true
                    break
                fi
                ;;
        esac
    done
    if ! $if_match
    then
        echo "$sname: skipping, not on a suitable network." >&2
        exit 0
    fi
    unset ipcfg if_match if_name if_patt if_cnt if_cur if_list
fi

. "$LOCAL_ENV_DIR/os.type" || exit $?
. "$LOCAL_ENV_DIR/otp.install.base" || exit $?

readonly  work="$(mktemp -d /tmp/otp.XXXXXXX)"
trap "/bin/rm -rf $work" EXIT

typeset -i  vsn
typeset     ext log otp ref rel tmp
typeset     branch='master'

echo "==> $GIT clone --quiet '$otp_source_repo' '$work'"
$GIT clone --quiet "$otp_source_repo" "$work"
cd "$work"

ref="$($GIT branch --list | sed -En \
    's/^[[:space:]]*\*[[:space:]]+([^[:space:]]+)[[:space:]]*$/\1/p')"
if [[ "$ref" != "$branch" && -n "$otp_dest_repos" ]]
then
    for tmp in $otp_dest_repos
    do
        echo "==> $GIT push --quiet '$tmp' '$ref'"
        $GIT push --quiet "$tmp" "$ref"
    done
fi

# if not initialized, set otp_vsn_min to capture last 3 GAs
if [[ -z "$otp_vsn_min" || $otp_vsn_min -eq 0 ]]
then
    tmp="$(<OTP_VERSION)"
    vsn="${tmp%%.*}"
    let 'otp_vsn_min = (vsn - 3)'
fi
readonly otp_vsn_min

# work down from the version in $branch to $otp_vsn_min

while true
do
    echo "==> $GIT checkout --force --quiet '$branch'"
    $GIT checkout --force --quiet "$branch"
    tmp="$(<OTP_VERSION)"
    vsn="${tmp%%.*}"
    rel="${tmp##*-}"
    case "$rel" in
        "$tmp")
            rel=ga
            ;;
        rc[0-9]*|RC[0-9]*)
            rel='rc'
            ;;
        *)
            ;;
    esac
    otp="otp-$vsn-$rel"
    ext="$os_type.$otp.txt"
    log="$otp_install_base/$otp/build.$ext"
    if [[ -f "$log" && "$(head "$log" | sed -En \
        's/^commit:[[:space:]]*([^[:space:]]+)[[:space:]]*$/\1/p')" \
        == "$($GIT show-ref --heads --hash "refs/heads/$branch")" ]]
    then
        echo "Skipping '$otp_install_base/$otp' - up to date"
    else
        if [[ -n "$otp_dest_repos" ]]
        then
            for tmp in $otp_dest_repos
            do
                echo "==> $GIT push --quiet '$tmp' '$branch'"
                $GIT push --quiet "$tmp" "$branch"
            done
        fi
        cd "$rdir"
        echo '==>' "$sdir/otp.apply.patches" "$work"
        if "$sdir/otp.apply.patches" "$work"
        then
            echo '==>' "$sdir/otp.replace.as" "${replace_flags[@]}" "$work" "$otp"
            if "$sdir/otp.replace.as" "${replace_flags[@]}" "$work" "$otp"
            then
                /bin/rm -rf /tmp/*."$ext"
            elif /bin/mv $work/*.$ext /tmp 2>/dev/null
            then
                echo "!!! error log(s) saved as /tmp/*.$ext"
            fi
        fi
        cd "$work"
    fi
    [[ $vsn -gt $otp_vsn_min ]] || break
    if [[ "$branch" == "maint-$vsn" ]] \
    || ! $GIT checkout --force --quiet "maint-$vsn" 2>/dev/null
    then
        let 'vsn -= 1'
    fi
    branch="maint-$vsn"
done
cd "$rdir"