##@cooked comments # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
## Versionnage sémantique
##@cooked nocomments
##@require base
uprovide semver
urequire base

function __semver_check_version() { [ -z "${1//[a-zA-Z0-9.+-]/}" ]; }
function __semver_check_prelease() { [ -z "${1//[a-zA-Z0-9.-]/}" ]; }
function __semver_check_metadata() { [ -z "${1//[a-zA-Z0-9.-]/}" ]; }

function semver_parse() {
    local __p_ver="$1"
    local __p_ma="${2:-major}" __p_mi="${3:-minor}" __p_pl="${4:-patchlevel}"
    local __p_pr="${5:-prelease}" __p_md="${6:-metadata}" __p_va="${7:-valid}"
    local __p_tmp
    setv "$__p_ma" ""
    setv "$__p_mi" ""
    setv "$__p_pl" ""
    array_new "$__p_pr"
    array_new "$__p_md"
    setv "$__p_va" ""

    # vérifier les caractères valides
    __semver_check_version "$__p_ver" || return 1

    # extraire major
    __p_tmp=
    while [ "${__p_ver/#[0-9]/}" != "$__p_ver" ]; do
        __p_tmp="$__p_tmp${__p_ver:0:1}"
        __p_ver="${__p_ver:1}"
    done
    [ "${__p_ver:0:1}" == . ] || return 1
    __p_ver="${__p_ver:1}"
    setv "$__p_ma" "$__p_tmp"

    # extraire minor
    __p_tmp=
    while [ "${__p_ver/#[0-9]/}" != "$__p_ver" ]; do
        __p_tmp="$__p_tmp${__p_ver:0:1}"
        __p_ver="${__p_ver:1}"
    done
    [ "${__p_ver:0:1}" == . ] || return 1
    __p_ver="${__p_ver:1}"
    setv "$__p_mi" "$__p_tmp"

    # extraire patchlevel
    __p_tmp=
    while [ "${__p_ver/#[0-9]/}" != "$__p_ver" ]; do
        __p_tmp="$__p_tmp${__p_ver:0:1}"
        __p_ver="${__p_ver:1}"
    done
    [ -z "$__p_ver" -o "${__p_ver:0:1}" == - -o "${__p_ver:0:1}" == + ] || return 1
    setv "$__p_pl" "$__p_tmp"

    # extraire prelease
    if [ "${__p_ver:0:1}" == - ]; then
        __p_ver="${__p_ver:1}"
        if [[ "$__p_ver" == *+* ]]; then
            __p_tmp="${__p_ver%%+*}"
            __p_ver="+${__p_ver##*+}"
        else
            __p_tmp="$__p_ver"
            __p_ver=
        fi
        __semver_check_prelease "$__p_tmp" || return 1
        array_split "$__p_pr" "$__p_tmp" .
    fi

    # extraire metadata
    if [ "${__p_ver:0:1}" == + ]; then
        __p_ver="${__p_ver:1}"
        __p_tmp="$__p_ver"
        __p_ver=
        __semver_check_metadata "$__p_tmp" || return 1
        array_split "$__p_md" "$__p_tmp" .
    fi

    # on doit avoir tout analysé
    [ -z "$__p_ver" ] || return 1

    setv "$__p_va" 1
    return 0
}

function semver_incmajor() {
    setv "$1" $((${!1} + 1))
    setv "$2" 0
    setv "$3" 0
    array_new "$4"
}

function semver_incminor() {
    setv "$2" $((${!2} + 1))
    setv "$3" 0
    array_new "$4"
}

function semver_incpatchlevel() {
    setv "$3" $((${!3} + 1))
    array_new "$4"
}

function semver_setversion() {
    local __sv_ma __sv_mi __sv_svl __sv_svr __sv_md __sv_va
    semver_parse "$1" __sv_ma __sv_mi __sv_pl __sv_pr __sv_md __sv_va
    [ -n "$__sv_va" ] || return 1
    setv "$2" "$__sv_ma"
    setv "$3" "$__sv_mi"
    setv "$4" "$__sv_pl"
    return 0
}

function semver_setprelease() {
    if [ -n "$1" ]; then
        __semver_check_prelease "$1" || return 1
        array_split "$5" "$1" .
    else
        array_new "$5"
    fi
    return 0
}

function semver_compare_prelease() {
    local -a __cp_pr1 __cp_pr2 __cp_len i __cp_v1 __cp_v2
    array_copy __cp_pr1 "$1"
    array_copy __cp_pr2 "$2"
    if [ ${#__cp_pr1[*]} -eq 0 -a ${#__cp_pr2[*]} -eq 0 ]; then
        # final == final
        echo eq; return
    elif [ ${#__cp_pr1[*]} -gt 0 -a ${#__cp_pr2[*]} -eq 0 ]; then
        # prelease < final
        echo lt; return
    elif [ ${#__cp_pr1[*]} -eq 0 -a ${#__cp_pr2[*]} -gt 0 ]; then
        # final > prelease
        echo gt; return
    fi
    # calculer le nombre d'éléments à comparer dans les deux tableaux soit
    # min(len(__cp_pr1), len(__cp_pr2))
    __cp_len=${#__cp_pr1[*]}
    [ ${#__cp_pr2[*]} -lt $__cp_len ] && __cp_len=${#__cp_pr2[*]}
    # comparer __cp_len éléments
    i=0
    while [ $i -lt $__cp_len ]; do
        __cp_v1="${__cp_pr1[$i]}"
        __cp_v2="${__cp_pr2[$i]}"
        if [ "$__cp_v1" == "$__cp_v2" ]; then
            :
        elif isnum "$__cp_v1" && isnum "$__cp_v2"; then
            if [ $__cp_v1 -lt $__cp_v2 ]; then
                echo lt; return
            elif [ $__cp_v1 -gt $__cp_v2 ]; then
                echo gt; return
            fi
        elif isnum "$__cp_v1"; then
            echo lt; return
        elif isnum "$__cp_v2"; then
            echo gt; return
        else
            # comparaison chaine
            if [ "$(echo "$__cp_v1"$'\n'"$__cp_v2" | LANG=C sort | head -n1)" == "$__cp_v1" ]; then
                echo lt; return
            else
                echo gt; return
            fi
        fi
        i=$(($i + 1))
    done
    # comparer ce qui reste
    __cp_pr1=("${__cp_pr1[@]:$__cp_len}")
    __cp_pr2=("${__cp_pr2[@]:$__cp_len}")
    if [ ${#__cp_pr1[*]} -gt 0 ]; then
        echo gt; return
    elif [ ${#__cp_pr2[*]} -gt 0 ]; then
        echo lt; return
    fi
    # en définitive, c'est égal
    echo eq
}

function semver_setmetadata() {
    if [ -n "$1" ]; then
        __semver_check_metadata "$1" || return 1
        array_split "$6" "$1" .
    else
        array_new "$6"
    fi
    return 0
}

function semver_addmetadata() {
    if [ -n "$1" ]; then
        __semver_check_metadata "$1" || return 1
        local -a __sam_metadata
        array_split __sam_metadata "$1" .
        array_extend "$6" __sam_metadata
    fi
    return 0
}

function semver_compare_metadata() {
    # même algo que pour prelease
    semver_compare_prelease "$@"
}

function semver_copy() {
    setv "$1" "${!6}"
    setv "$2" "${!7}"
    setv "$3" "${!8}"
    array_copy "$4" "$9"
    array_copy "$5" "${10}"
}

function semver_build() {
    echo_ "${!1}.${!2}.${!3}"
    array_isempty "$4" || recho_ "-$(array_join "$4" .)"
    array_isempty "$5" || recho_ "+$(array_join "$5" .)"
    echo ""
}

function semver_setvar() {
    setv "$1" "$(semver_build "$2" "$3" "$4" "$5" "$6")"
}

################################################################################
# Les fonctions psemver_* sont comme semver_* mais les noms de variables sont
# standardisés (major, minor, pathchlevel, prelease, metadata) et l'on spécifie
# uniquement un préfixe pour les noms de variable

function psemver_parse() { semver_parse "$1" "${2}major" "${2}minor" "${2}patchlevel" "${2}prelease" "${2}metadata" "${2}valid"; }
function psemver_incmajor() { semver_incmajor "${1}major" "${1}minor" "${1}patchlevel" "${1}prelease" "${1}metadata"; }
function psemver_incminor() { semver_incminor "${1}major" "${1}minor" "${1}patchlevel" "${1}prelease" "${1}metadata"; }
function psemver_incpatchlevel() { semver_incpatchlevel "${1}major" "${1}minor" "${1}patchlevel" "${1}prelease" "${1}metadata"; }
function psemver_setversion() { semver_setversion "$1" "${2}major" "${2}minor" "${2}patchlevel" "${2}prelease" "${2}metadata"; }
function psemver_setprelease() { semver_setprelease "$1" "${2}major" "${2}minor" "${2}patchlevel" "${2}prelease" "${2}metadata"; }
function psemver_compare_prelease() { semver_compare_prelease "${1}prelease" "${2}prelease"; }
function psemver_setmetadata() { semver_setmetadata "$1" "${2}major" "${2}minor" "${2}patchlevel" "${2}prelease" "${2}metadata"; }
function psemver_addmetadata() { semver_addmetadata "$1" "${2}major" "${2}minor" "${2}patchlevel" "${2}prelease" "${2}metadata"; }
function psemver_compare_metadata() { semver_compare_metadata "${1}metadata" "${2}metadata"; }
function psemver_copy() { semver_copy "${1}major" "${1}minor" "${1}patchlevel" "${1}prelease" "${1}metadata" "${2}major" "${2}minor" "${2}patchlevel" "${2}prelease" "${2}metadata"; }
function psemver_build() { semver_build "${1}major" "${1}minor" "${1}patchlevel" "${1}prelease" "${1}metadata"; }
function psemver_setvar() { semver_setvar "$1" "${2}major" "${2}minor" "${2}patchlevel" "${2}prelease" "${2}metadata"; }
