Initial commit

.gitignore

@@ -0,0 +1,3 @@
+.mkit/autoclean
+shellfu-bash-cached-*.tar.gz
+artifacts

LICENSE.md

@@ -0,0 +1,503 @@
+### GNU LESSER GENERAL PUBLIC LICENSE
+
+Version 2.1, February 1999
+
+    Copyright (C) 1991, 1999 Free Software Foundation, Inc.
+    51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+    
+    Everyone is permitted to copy and distribute verbatim copies
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+
+    [This is the first released version of the Lesser GPL.  It also counts
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+     the version number 2.1.]
+
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+That's all there is to it!

Makefile

@@ -0,0 +1,5 @@
+# Cached - Cached (maybe) command execution
+# See LICENSE.md file for copyright and license details.
+
+MKIT_DIR=utils/mkit
+include $(MKIT_DIR)/mkit.mk

README.md

@@ -0,0 +1,4 @@
+Cached
+======
+
+Cached (maybe) command execution

mkit.ini

@@ -0,0 +1,36 @@
+[project]
+    version     = 0.0.0
+    name        = Cached
+    tagline     = Cached (maybe) command execution
+    pkgname     = shellfu-bash-cached
+    maintainer  = Alois Mahdal <netvor+cached@vornet.cz>
+    vcs_browser = https://github.com/AloisMahdal/shellfu-bash-cached
+    relsrc      = master
+    reldst      = last
+
+[dist]
+    tarball  = LICENSE.md
+    tarball  = Makefile
+    tarball  = README.md
+    tarball  = mkit.ini
+    tarball  = packaging
+    tarball  = src
+    tarball  = utils
+    rpmstuff = packaging/template.spec
+    debstuff = packaging/debian
+
+[ENV]
+    PREFIX = /usr/local
+
+[roots]
+    doc   = [ENV:PREFIX]/share/doc/shellfu-bash-cached
+    sfmod = [ENV:PREFIX]/share/shellfu/include-bash
+
+[tokens]
+    __SHELLFU_MODNAME__ = cached
+
+[files]
+    doc   = README.md
+    sfmod = src/cached.sh
+
+#mkit version=0.0.24

packaging/debian/changelog

@@ -0,0 +1,5 @@
+__MKIT_PROJ_PKGNAME__ (__MKIT_PROJ_VERSION__-1) UNRELEASED; urgency=medium
+
+  * Initial release. (Closes: #XXXXXX)
+
+ -- __MKIT_PROJ_MAINTAINER__  Thu, 10 Aug 2017 22:15:34 +0200

packaging/debian/compat

@@ -0,0 +1 @@
+9

packaging/debian/control

@@ -0,0 +1,20 @@
+Source: __MKIT_PROJ_PKGNAME__
+Maintainer: __MKIT_PROJ_MAINTAINER__
+Vcs-Browser: __MKIT_PROJ_VCS_BROWSER__
+Section: misc
+Priority: extra
+Standards-Version: 3.9.2
+Build-Depends:
+ debhelper (>= 9),
+
+Package: __MKIT_PROJ_PKGNAME__
+Architecture: all
+Depends:
+ shellfu (>= 0.10),
+ shellfu (<< 0.11),
+ shellfu-bash,
+ shellfu-bash-pretty,
+Description: __MKIT_PROJ_NAME__ - __MKIT_PROJ_TAGLINE__
+ Cached is a Shellfu module implementing simple caching model.
+
+# control file built with MKit __MKIT_SELF_VERSION__

packaging/debian/copyright

@@ -0,0 +1 @@
+

packaging/debian/install

@@ -0,0 +1 @@
+/usr/share/shellfu/include-bash/__SHELLFU_MODNAME__.sh

packaging/debian/rules

@@ -0,0 +1,12 @@
+#!/usr/bin/make -f
+
+%:
+
+	dh $@
+
+override_dh_auto_install:
+
+	make install PREFIX=/usr DESTDIR=debian/tmp
+
+override_dh_auto_test:
+	@true

packaging/debian/source/format

@@ -0,0 +1 @@
+3.0 (quilt)

packaging/template.spec

@@ -0,0 +1,38 @@
+Name:       __MKIT_PROJ_PKGNAME__
+Version:    __MKIT_PROJ_VERSION__
+Release:    1%{?dist}
+Summary:    __MKIT_PROJ_NAME__ - __MKIT_PROJ_TAGLINE__
+URL:        __MKIT_PROJ_VCS_BROWSER__
+License:    LGPLv2
+
+%define sfincb %{_datadir}/shellfu/include-bash
+%define sfmodn __SHELLFU_MODNAME__
+%define shellfu_req shellfu >= 0.10.4, shellfu < 0.11
+
+Source0:       %{name}-%{version}.tar.gz
+BuildArch:     noarch
+
+Requires: %shellfu_req
+Requires: shellfu-bash
+Requires: shellfu-bash-pretty
+
+%description
+Cached is a Shellfu module implementing simple caching model.
+
+%prep
+%setup -q
+
+%build
+make %{?_smp_mflags} PREFIX=/usr
+
+%install
+%make_install PREFIX=/usr
+
+%files
+%doc %{_docdir}/%{name}/README.md
+%{sfincb}/%{sfmodn}.sh
+
+
+%changelog
+
+# specfile built with MKit __MKIT_SELF_VERSION__

src/cached.sh.skel

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+shellfu import pretty
+
+
+cached() {
+    #
+    # Get cached or new output of command $@
+    #
+    # Usage:
+    #     cached [-m] [-e|-E] [-o|-O] [-d|-D] CMD [ARG]
+    #
+    # Look up CMD with any ARGs in local cache and return result on hit.
+    # In case of miss, run command to create the cache first.
+    #
+    # Specify -m to enforce cache miss, ie. as if CMD is run for the first
+    # time. 
+    #
+    :
+}
+
+#shellfu module-version=__MKIT_PROJ_VERSION__

utils/mkit/include/build.sh

@@ -0,0 +1,214 @@
+#!/bin/bash
+# MKit - simple install helper
+# See LICENSE file for copyright and license details.
+
+mkit_import ini
+mkit_import facts
+
+
+__build1() {
+    #
+    # Process one skeleton $1 of type $3 (or guessed) to path $2
+    #
+    local srcpath=$1    # skeleton path
+    local dstpath=$2    # destination meaty animal path
+    local ftype=$3      # file/builder type
+    test -n "$dstpath"  || dstpath=${srcpath%.skel}
+    test -n "$ftype"    || ftype=$(__guess_ftype "$dstpath")
+    debug_var srcpath dstpath ftype
+    <"$srcpath" __build1_ftype "$ftype" >"$dstpath"
+    rec_built "$dstpath"
+}
+
+__build1_ftype() {
+    #
+    # Build a file of type $1; fom stdin to stdout
+    #
+    local ftype=$1      # file/builder type
+    case $ftype in
+        MKIT_COMMON)    __expand_tokens "tokens" ;;
+        rpmstuff)       __expand_tokens "tokens" "rpmstuff:tokens" ;;
+        debstuff)       __expand_tokens "tokens" "debstuff:tokens" ;;
+        *)              die "unknown file type: $ftype" ;;
+    esac
+}
+
+__expand_tokens() {
+    #
+    # Read stdin, expanding tokens from sections $@
+    #
+    local script        # sed script cache
+    local section       # each section to expand tokens from
+    local varname       # each token name
+    local varvalue      # each token value
+    script=$(mktemp --tmpdir mkit-tmp.XXXXXXXXXX)
+    {
+        for section in "$@"; do
+            debug_var section
+            ini lskeys "$section" \
+              | while read -r varname; do
+                    varvalue="$(ini 1value "$section:$varname" | __qfs )"
+                    echo "s|$varname|$varvalue|g;"
+                    debug_var varname varvalue
+                done
+        done
+        echo "s|__MKIT_PROJ_NAME__|$(ini 1value project:name | __qfs)|g;"
+        echo "s|__MKIT_PROJ_CODENAME__|$(ini 1value project:codename | __qfs)|g;"
+        echo "s|__MKIT_PROJ_LICENSE__|$(ini 1value project:license | __qfs)|g;"
+        echo "s|__MKIT_PROJ_PKGNAME__|$(ini 1value project:pkgname | __qfs)|g;"
+        echo "s|__MKIT_PROJ_TAGLINE__|$(ini 1value project:tagline | __qfs)|g;"
+        echo "s|__MKIT_PROJ_MAINTAINER__|$(ini 1value project:maintainer | __qfs)|g;"
+        echo "s|__MKIT_PROJ_VCS_BROWSER__|$(ini 1value project:vcs_browser | __qfs)|g;"
+        echo "s|__MKIT_PROJ_GIT_LASTHASH__|$(git_lasthash | __qfs)|g;"
+        echo "s|__MKIT_PROJ_VERSION__|$(semver | __qfs)|g;"
+        echo "s|__MKIT_SELF_VERSION__|$MKIT_VERSION|g;"
+    } >> "$script"
+    sed -f "$script" || die "__expand_tokens failed"
+    rm "$script"
+}
+
+__guess_ftype() {
+    #
+    # Guess file type from destination path $1
+    #
+    local dstpath=$1    # destination path
+    case $dstpath in
+        *)    echo MKIT_COMMON ;;
+    esac
+}
+
+__qfs() {
+    #
+    # Quote for our sed scipt's RHS
+    #
+    sed '
+        s:\\:\\\\:g
+        s:|:\\|:g
+    '
+}
+
+_mkit_data() {
+    #
+    # Build sampler showing all token values
+    #
+    local token
+    local section
+    local sections
+    sections=()
+    ini lskeys tokens | grep -q . && sections=(tokens)
+    sections+=( $(ini lssect | grep ':tokens$') )
+    {
+        echo "(builtin):"
+        echo "  x_MKIT_PROJ_NAME__ => '__MKIT_PROJ_NAME__'"
+        echo "  x_MKIT_PROJ_CODENAME__ => '__MKIT_PROJ_CODENAME__'"
+        echo "  x_MKIT_PROJ_LICENSE__ => '__MKIT_PROJ_LICENSE__'"
+        echo "  x_MKIT_PROJ_PKGNAME__ => '__MKIT_PROJ_PKGNAME__'"
+        echo "  x_MKIT_PROJ_TAGLINE__ => '__MKIT_PROJ_TAGLINE__'"
+        echo "  x_MKIT_PROJ_MAINTAINER__ => '__MKIT_PROJ_MAINTAINER__'"
+        echo "  x_MKIT_PROJ_VCS_BROWSER__ => '__MKIT_PROJ_VCS_BROWSER__'"
+        echo "  x_MKIT_PROJ_GIT_LASTHASH__ => '__MKIT_PROJ_GIT_LASTHASH__'"
+        echo "  x_MKIT_PROJ_VERSION__ => '__MKIT_PROJ_VERSION__'"
+        echo "  x_MKIT_SELF_VERSION__ => '__MKIT_SELF_VERSION__'"
+        for section in "${sections[@]}"; do
+            echo "$section:"
+            for token in $(ini lskeys "$section"); do
+                echo "  x${token:1} => '$token'"
+            done
+        done
+    } \
+      | __expand_tokens "MKIT_BUILTIN" "${sections[@]}" \
+      | sed '/^  x/ s|x|_|'
+}
+
+build() {
+    #
+    # Add meat to all skeletons
+    #
+    local srcpath   # each source path
+    semver >/dev/null
+    find . -type f -name '*.skel' \
+     | while read -r srcpath; do
+           __build1 "$srcpath"
+       done
+}
+
+clean() {
+    #
+    # Clean up tree after building
+    #
+    test -f "$MKIT_LOCAL/built.lst" && {
+        <"$MKIT_LOCAL/built.lst" grep -v -e '\.\.' -e ^/ \
+          | xargs -r rm -rf
+        rm -f "$MKIT_LOCAL/built.lst"
+        rmdir --ignore-fail-on-non-empty "$MKIT_LOCAL"
+    }
+    true
+}
+
+debstuff() {
+    #
+    # Build Debian stuff (eamed tarball, debian dir)
+    #
+    local version       # package version
+    local debian_skel   # 'debian' folder skeleton
+    local dfsrc         # each source file from ^^
+    local dftgt         # each built packaging file
+    version=$(semver)
+
+    # tarball - we should already have by means of 'dist'
+    #
+    mv "${MKIT_PROJ_PKGNAME}-$version.tar.gz" \
+       "${MKIT_PROJ_PKGNAME}_$version.orig.tar.gz" \
+     || die "could not rename tarball"
+    rec_built "${MKIT_PROJ_PKGNAME}_$version.orig.tar.gz"
+
+    # read content of each mandatory file from debian_skel
+    #
+    debian_skel=$(ini 1value dist:debstuff)
+    test -n "$debian_skel" || die "dist:debstuff not specified"
+    test -d "$debian_skel" || die "debian directory template found: $debian_skel"
+    mkdir -p debian/source
+    find "$debian_skel" -type f \
+      | while read -r dfsrc; do
+            dftgt="debian/${dfsrc#$debian_skel}"
+            mkdir -p "$(dirname "$dftgt")"
+            __build1 "$dfsrc" "$dftgt" debstuff
+        done
+    rec_built debian
+}
+
+dist() {
+    #
+    # Create distributable tarball
+    #
+    #FIXME: lacking Makefile skills, we do this step twice for
+    #       rpmstuff, hence -f hack for gzip
+    #
+    local version           # tarball version
+    local git_lasthash      # last git commit hash
+    local dirname           # directory and tarball name
+    version=$(semver)
+    dirname=$MKIT_PROJ_PKGNAME-$version
+    git_lasthash=$(git_lasthash)
+    mkdir -p "$dirname"
+    ini values "dist:tarball" | xargs -I DIST_ITEM cp -R DIST_ITEM "$dirname"
+    update_version "$version" "$dirname/mkit.ini"
+    mkdir -p "$dirname/.mkit"
+    echo -n "$git_lasthash" > "$dirname/.mkit/git_lasthash"
+    tar -cf "$dirname.tar" "$dirname"
+    gzip -f "$dirname.tar"      # see above FIXME
+    rec_built "$dirname.tar.gz"
+    rm -rf "$dirname"
+}
+
+rpmstuff() {
+    #
+    # Build specfile
+    #
+    local specname=$MKIT_PROJ_PKGNAME.spec      # .spec filename
+    local specsrc                               # source of specfile
+    specsrc="$(ini 1value "dist:rpmstuff")"
+    test -n "$specsrc" || die "dist:rpmstuff not specified"
+    test -f "$specsrc" || die "specfile template not found: $specsrc"
+    __build1 "$specsrc" "$specname" rpmstuff
+}

utils/mkit/include/deploy.sh

@@ -0,0 +1,130 @@
+#!/bin/bash
+# MKit - simple install helper
+# See LICENSE file for copyright and license details.
+
+mkit_import ini
+
+__deploy_item() {
+    #
+    # Deploy item and make it look like wanted
+    #
+    # usage: __deploy_item src dst [mode]
+    #
+    # Both src and dst must be names of actual items[1],
+    # whereas dst must not exist.  On update, dst is
+    # usually to be replaced but that is uninstall's
+    # job!
+    #
+    #  [1] Ie. src=foo and dst=/foo/bar does *always*
+    #      mean that foo will become 'bar'.  This is
+    #      different than traditional `cp` behavior,
+    #      when this depends if 'bar' already exists
+    #      as a directory.
+    #
+    # If mode is omitted or empty, MKIT_DEFAULT_MODE is
+    # used instead.
+    #
+    # Directories are copied recursively, and mode is
+    # applied only to files.
+    #
+    local src=$1                            # source path
+    local dst=$2                            # destination path
+    local mode=${3:-$MKIT_DEFAULT_MODE}     # mode
+    local item                              # each in directory
+    if test -d "$src"; then
+        find "$src" -type f \
+          | while read -r item; do
+                [[ $item =~ .skel$ ]] \
+                 && grep -q "${item%.skel}" "$MKIT_LOCAL/built.lst" \
+                 && continue
+                __deploy_item "$item" "$dst${item#$src}" "$mode"
+            done
+    else
+        test "$mode" == "SRC" && mode=$(stat -c "%a" "$src")
+        __maybe install -DTvm "$mode" "$src" "$dst"
+    fi
+}
+
+__get_dst() {
+    #
+    # Find out target path for src file $2 of group $1
+    #
+    local grp=$1        # deploy group
+    local src=$2        # each source
+    local dst=$3        # alternative destination name
+    test -n "$dst" || dst=${src##*/}
+    echo "$(__get_root "$grp")/$dst"
+}
+
+__get_root() {
+    #
+    # Find out target root for group $1
+    #
+    local grp=$1        # deploy group
+    local root          # root for this group
+    local destdir       # value of DESTDIR
+    root=$(ini 1value "roots:$grp")
+    destdir=$(ini 1value ENV:DESTDIR)
+    destdir=${destdir%/}
+    case $destdir:$root in
+        *:)     die "missing in config.ini: roots:$grp" ;;
+        :*)     echo "$root" ;;
+        *:*)    echo "$destdir/$root" ;;
+    esac
+}
+
+__maybe() {
+    #
+    # Call the deploy command $1 $@ unless in dry mode
+    #
+    debug "$@"
+    local cmd="$1"; shift
+    $MKIT_DRY && return
+    case "$cmd" in
+        cp|rm|rmdir|chmod|mkdir) $cmd "$@" ;;
+        install)                 command -p install "$@" ;;
+        *)                       die "bad command called";;
+    esac
+}
+
+install() {
+    #
+    # Install product
+    #
+    local group     # each deploy group
+    local mode      # mode (group-specific)
+    local src       # each source path
+    local dst       # each (final absolute) destination path
+    ini lskeys "files" \
+      | sort \
+      | uniq \
+      | while read -r group; do
+            mode=$(ini 1value "modes:$group")
+            ini values "files:$group" \
+              | while read -r src dst; do
+                    dst=$(__get_dst "$group" "$src" "$dst")
+                    __deploy_item "$src" "$dst" "$mode"
+                done
+        done
+    test -f "$MKIT_LOCAL/autoclean" && clean
+    true
+}
+
+uninstall() {
+    #
+    # Uninstall product
+    #
+    local group     # each deploy group
+    local src       # each source path
+    local dst       # each (final absolute) destination path
+    ini lskeys "files" \
+      | sort \
+      | uniq \
+      | while read -r group; do
+            ini values "files:$group" \
+              | while read -r src dst; do
+                    dst=$(__get_dst "$group" "$src" "$dst")
+                    __maybe rm -vrf "$dst"
+                done
+        done
+}

utils/mkit/include/facts.sh

@@ -0,0 +1,184 @@
+#!/bin/bash
+# MKit - simple install helper
+# See LICENSE file for copyright and license details.
+
+mkit_import ini
+
+git_bool() {
+    #
+    # Get git bool (ie. exit status counts) $1
+    #
+    local bool_name=$1      # name of boolean to get
+    git_present || warn "can't give bool outside git repo: $bool_name"
+    case "$bool_name" in
+        dirty_files)
+            git diff-files | grep -qm 1 .
+            ;;
+        dirty_index)
+            git diff-index HEAD | grep -qm 1 .
+            ;;
+        dirty)
+            git_bool dirty_files || git_bool dirty_index
+            ;;
+        *)
+            warn "unknown git bool asked: $bool_name"
+            return 2
+            ;;
+    esac
+}
+
+git_fact() {
+    #
+    # Get git fact $1
+    #
+    local fact_name=$1      # name of fact to get
+    git_present || warn "can't give fact outside git repo: $fact_name"
+    case "$fact_name" in
+        latest_tag)
+            git log --format="%d" \
+              | sed 's/,/\n/g' \
+              | sed 's/^[[:blank:]]*//' \
+              | grep -E '^\(?tag' \
+              | tr -cd '[[:digit:]].v\n' \
+              | grep . -m 1
+            ;;
+        latest_version)
+            git_fact latest_tag | git_tag2ver
+            ;;
+        current_branch)
+            git rev-parse --abbrev-ref HEAD
+            ;;
+        reldiff)
+            git log --oneline "$(git_fact latest_tag)..HEAD" --name-only
+            ;;
+        latest_sha)
+            git log -1 --pretty=format:%h HEAD
+            ;;
+        *)
+            warn "unknown git fact asked: $fact_name"
+            ;;
+    esac
+}
+
+git_present() {
+    #
+    # True if we're in a git repo
+    #
+    git rev-parse HEAD >&/dev/null
+}
+
+git_tag2ver() {
+    #
+    # Convert tag to version
+    #
+    sed s/^v//
+}
+
+git_ver2tag() {
+    #
+    # Convert version to tag
+    #
+    sed s/^/v/
+}
+
+git_lasthash() {
+    #
+    # Show last commit hash (with .dirty suffix if needed)
+    #
+    # If outside git repo, get it from .mkit/git_lasthash, which
+    # should have been put there by dist target.  (I.e., this won't
+    # work if you got outside the git repo in other way than dist
+    # target, but that's actually expected.)
+    #
+    local last_hash     # last commit hash
+    if git_present; then    # we are in git repo
+        last_hash=$(git rev-parse HEAD)
+        echo -n "$last_hash"
+        git_bool dirty && echo -n ".dirty"
+    else    # we are outside (eg. distributor's build dir')
+        grep . .mkit/git_lasthash || {
+            echo UNKNOWN
+            warn "malformed source, could not determine git hash"
+        }
+    fi
+}
+
+semver() {
+    #
+    # Build semver version string with build metadata
+    #
+    # Build version string from available info using following
+    # logic:
+    #
+    #  1. use project.version (from mkit.ini)
+    #  2. if we are in git, override the version with last tag
+    #  3. if set, add project:prerl (from mkit.ini) as pre-release ID
+    #     (afer dash)
+    #  4. if we are at a later commit than the last tag, add branch
+    #     name and commit sha1 to build metadata (after plus sign)
+    #  5. if the tree is "dirty", i.e. has uncommited changes,
+    #     add "dirty" to build metadata
+    #
+    # The version is compatible with SemVer 2.0.0.
+    #
+    # Examples:
+    #
+    #     myprog v1.0.7                         # all clear
+    #     myprog v1.0.7-alpha                   # mkit.ini: project:prerl="alpha"
+    #     myprog v1.0.7-alpha+g1aef811.master   # ^^ + some commits after
+    #     myprog v1.0.7-alpha+gf14fc4f.api2     # ^^ + on a feature branch
+    #     myprog v1.0.7-alpha+gf14fc4f.api2.dirty  # ^^ + tree edited
+    #     myprog v1.0.7-alpha+dirty             # tag OK but tree edited
+    #     myprog v1.0.7+dirty                   # ^^ but no pre-release id
+    #
+    # Note that versions with "dirty" should be perceived as kind of
+    # dangerous outside developer's own machine.  Versions with sha1 are
+    # safer but must not be released.
+    #
+    # I have considered decorating the git commit refs to make them
+    # sort of sortable (e.g. "r1.g1aef811"), but on second thought,
+    # I don't think it's good idea to give *any* semantics to meta-data
+    # at all.  First, there is no rule that r1<r2<r3; a commit can be
+    # removing what other just added and one change can be split to
+    # multiple commits.  Also, the whole thing breaks anyway once you
+    # rebase your branch (no, it's not a sin).  The sole purpose of
+    # meta-data is to *identify* the code, and provide safe path back
+    # to tree; commit refs are already perfect for that.
+    #
+    # FIXME:  Using project:prerl for release IDs may not be compatible with
+    #         release strategy implemented in release.sh
+    #
+    local version       # version string (final result)
+    local prerl         # pre-release keyword (from mkit.ini, eg. 'alpha')
+    local latest_tag    # latest git tag
+    local commit        # commit indicator (CURRENT_BRANCH.gHASH)
+    local dirty         # 0 if dirty, 1 if clean
+    local suffix        # version suffix
+    local_get semver && return 0
+    version=$(ini 1value project:version)
+    prerl=$(ini 1value project:prerl)
+    grep ":" <<<"$prerl" \
+     && warn "colon in project:prerl may corrupt version data: $prerl"
+    if git_present;
+    then    # we are in git repo... so we can get smart
+        latest_tag=$(git_fact latest_tag)
+        if ! git describe --tags --exact-match HEAD >&/dev/null;
+        then    # we are at a later commit than the last tag
+            commit="$(git_fact current_branch).g$(git_fact latest_sha)"
+        fi
+        git_bool dirty; dirty=$?
+        test -n "$latest_tag" && version=${latest_tag:1}
+        case "$dirty:$commit" in
+            1:)  suffix=""               ;;
+            0:)  suffix="+dirty"         ;;
+            1:*) suffix="+$commit"       ;;
+            0:*) suffix="+$commit.dirty" ;;
+            *)   suffix=MKIT_BUG
+                 warn "MKIT_BUG: bad dirt/commit detection" ;;
+        esac
+        test -n "$prerl" && suffix="-$prerl$suffix"
+        version="$version$suffix"
+    fi
+    local_putb semver <<<"$version"
+    echo "$version"
+}

utils/mkit/include/ini.sh

@@ -0,0 +1,154 @@
+#!/bin/bash
+# MKit - simple install helper
+# See LICENSE file for copyright and license details.
+
+__ini_cat() {
+    #
+    # A no-op for text stream
+    #
+    local line      # each line
+    while read -r line; do
+        printf -- "%s\n" "$line"
+    done
+}
+
+__ini_expand() {
+    #
+    # Expand reference value (prefix only)
+    #
+    local line      # each input line
+    local suffix    # tail of the line
+    local ref       # reference
+    local value     # value if reference
+    while read -r line; do                  # [foo:bar]/path
+        suffix="${line#\[*\]}"              # /path
+        ref="${line%$suffix}"               # [foo:bar]
+        ref="${ref%\]}"                     # [foo:bar
+        ref="${ref#\[}"                     # foo:bar
+        value="$(ini 1value "$ref")"        # foo_bar_value
+        printf -- "%s\n" "$value$suffix"    # foo_bar_value/path
+    done
+}
+
+__ini_grepkey() {
+    #
+    # Read key from a section
+    #
+    local wnt=$1    # wanted key
+    grep '.' \
+      | grep -v '\s*#' \
+      | sed -e 's/ *= */=/; s/ +$//; s/^//;' \
+      | grep -e "^$wnt=" \
+      | cut -d= -f2- \
+      | __ini_maybe_expand
+}
+
+__ini_greppath() {
+    #
+    # Read key from the right section
+    #
+    # E.g. `files:share:my/lib.sh` should read
+    #
+    #     [files:share]
+    #         my/lib.sh   = proj/my/lib.sh
+    #
+    local wnt=$1                    # wanted path
+    local wntkey=${wnt##*:}         # ^^ key part
+    local wntsec=${wnt%:$wntkey}    # ^^ section part
+    local override                  # ENV override (only ENV section)
+    if test "$wntsec" = 'ENV'; then
+        override=${!wntkey}
+        test -n "$override" \
+         && echo "$override" \
+         && return
+    fi
+    __ini_grepsec "$wntsec" | __ini_grepkey "$wntkey"
+}
+
+__ini_grepsec() {
+    #
+    # Read one INI section
+    #
+    local wnt=$1        # wanted section name
+    local ok=false      # are we in the section?
+    local line          # each input line
+    grep '.' \
+      | grep -v '\s*#' \
+      | while read -r line; do
+            case "$line" in
+                \[$wnt\]) ok=true;  continue ;;
+                \[*\])    ok=false; continue ;;
+            esac
+            $ok || continue
+            printf -- "%s\n" "$line"
+        done \
+      | sed -e 's/ *= */=/; s/ +$//; s/^//;'
+}
+
+__ini_lskeys() {
+    #
+    # List keys from a section
+    #
+    local sct=$1    # section of interest
+    __ini_grepsec "$sct" | cut -d= -f1 | awk '!x[$0]++'
+}
+
+__ini_lssect() {
+    #
+    # List all section names
+    #
+    local arg=$1    # unused argument
+    grep -x '\[.*\]' | sed 's/^.//; s/.$//'
+}
+
+__ini_maybe_expand() {
+    #
+    # Decide whether or not to expand
+    #
+    if test "$MKIT_INI_EXPAND" -gt 0; then
+        MKIT_INI_EXPAND=$(( --MKIT_INI_EXPAND )) __ini_expand
+    else
+        __ini_cat
+    fi
+}
+
+ini() {
+    #
+    # do ini operation
+    #
+    local op=$1             # operator
+    local arg=$2            # argument
+    local fn                # internal function implementing $op
+    local limit=__ini_cat    # limiting internal function
+    case $op in
+        lskeys) fn=__ini_lskeys   ;;
+        lssect) fn=__ini_lssect   ;;
+        sec)    fn=__ini_grepsec  ;;
+        values) fn=__ini_greppath ;;
+        1value) fn=__ini_greppath; limit="tail -1" ;;
+        *)      die "incorrect use of \`ini()\`"
+    esac
+    <"$MKIT_INI" $fn "$arg" | $limit
+}
+
+update_version() {
+    #
+    # Change project:version in mkit.ini at path $2 to value $1
+    #
+    local version=$1    # new version
+    local inifile=$2    # mkit.ini path
+    local tmp           # mkit.ini cache
+    tmp=$(mktemp -t mkit.update_version.XXXXXXXX)
+    <"$inifile" perl -e '
+        my $hit = 0;
+        my $done = 0;
+        foreach (<STDIN>) {
+            if      ($done) { print; next; }
+            elsif   (m/\[project\]/) { $hit++; print; next; }
+            elsif   (m/\[/) { $hit = 0; print; next; }
+            elsif   ($hit) { s/\bversion\b( *)=( *).*/version$1=$2$ARGV[0]/ and $done++; print; }
+            else { print; next; }
+        }
+    ' "$version" >"$tmp" || die "failed to update version in mkit.ini"
+    mv "$tmp" "$inifile"
+}

utils/mkit/include/mkit.sh

@@ -0,0 +1,196 @@
+#!/bin/bash
+# MKit - simple install helper
+# See LICENSE file for copyright and license details.
+
+die() {
+    #
+    # Exit with message and non-zero exit status
+    #
+    echo "fatal: $*" >&2
+    exit 4
+}
+
+mkit_import() {
+    #
+    # Import mkit module $1.sh
+    #
+    # Check for module, source it and die with reasonable message if needed.
+    #
+    local modname=$1
+    local modpath
+    modpath="$MKIT_DIR/include/$modname.sh"
+    test -f "$modpath" || die "no such module: $modpath"
+    bash -n "$modpath" || die "bad syntax: $modpath"
+    #shellcheck disable=SC1090
+    . "$modpath" || die "failed to import: $modname"
+}
+
+mkit_import build
+mkit_import deploy
+mkit_import release
+mkit_import ini
+
+__valid_targets() {
+    #
+    # List valid routes
+    #
+    echo _mkit_data
+    echo build
+    echo clean
+    echo debstuff
+    echo dist
+    echo install
+    echo release
+    echo release_x
+    echo release_y
+    echo release_z
+    echo rpmstuff
+    echo uninstall
+    echo vbump
+    echo vbump_x
+    echo vbump_y
+    echo vbump_z
+}
+
+debug() {
+    #
+    # Print debug message
+    #
+    $MKIT_DEBUG || return 0
+    echo "MKIT_DEBUG: ${FUNCNAME[1]}()" "$@" >&2
+}
+
+debug_var() {
+    #
+    # Print debug message
+    #
+    $MKIT_DEBUG || return 0
+    local __mkit_debug_var_name__       # variable name to debug
+    for __mkit_debug_var_name__ in "$@"; do
+        {
+            echo -n "MKIT_DEBUG: ${FUNCNAME[1]}():"
+            echo -n " $__mkit_debug_var_name__"
+            echo -n "='${!__mkit_debug_var_name__}'"
+            echo
+        } >&2
+    done
+}
+
+__compver() {
+    #
+    # True if version $1 matches our version
+    #
+    # If our x is 0, check first two fragments, otherwise check just
+    # the x.  Fragments must equal.
+    #
+    local their_ver=$1      # their version
+    local our_x             # our X
+    local our_y             # our Y
+    local their_x           # their X
+    local their_y           # their Y
+    their_x=${their_ver%%.*}
+    their_y=${their_ver##$their_x.}
+    their_y=${their_y%%.*}
+    our_x=${MKIT_VERSION%%.*}
+    our_y=${MKIT_VERSION##$our_x.}
+    our_y=${our_y%%.*}
+    debug_var MKIT_VERSION our_x our_y their_ver their_x their_y
+    test "$their_x" -eq "$our_x" || return 1
+    test "$our_x" -eq 0 && {
+        test "$their_y" = "$our_y"
+        return $?
+    }
+    return 0
+}
+
+__chkiniversion() {
+    #
+    # Check if ini version is supported
+    #
+    # Look for "#mkit version=0.0.0" or similar in first or last
+    # 3 lines of the file; then check if the version is supported.
+    #
+    local ver_line      # line declaring version
+    local their_ver     # the declared version
+    ver_line=$(
+        {
+            head -3 "$MKIT_INI"
+            tail -3 "$MKIT_INI"
+        } | grep -m 1 -E '^# *mkit +version *= *v?[0-9]+\.[0-9]+\.[0-9]+'
+    )
+    test -n "$ver_line" \
+     || die "version mark ('#mkit version=x.y.z') not found in: $MKIT_INI"
+    their_ver="$(tr -d '[:blank:]v' <<<"${ver_line##*=}")"
+    __compver "$their_ver" \
+     || die "bad mkit.ini version: $their_ver does not match $MKIT_VERSION"
+}
+
+local_putb() {
+    #
+    # Make file $1 in $MKIT_LOCAL from stdin and mark as built
+    #
+    local fpath=$1
+    local_put "$fpath" && rec_built "$MKIT_LOCAL/$fpath"
+}
+
+local_put() {
+    #
+    # Make file $1 in $MKIT_LOCAL from stdin
+    #
+    local fpath="$MKIT_LOCAL/$1"
+    { mkdir -p "${fpath%/*}" && cat >"$fpath"; } \
+     || die "cannot write to local cache: $fpath"
+}
+
+local_get() {
+    #
+    # Read file $1 in $MKIT_LOCAL
+    #
+    local fpath="$MKIT_LOCAL/$1"
+    cat "$fpath" 2>/dev/null
+}
+
+mkit_init() {
+    #
+    # Do basic initialization
+    #
+    # Check for ini file and some variables
+    #
+    $MKIT_DRY && MKIT_DEBUG=true
+    #shellcheck disable=SC2034
+    MKIT_PROJ_PKGNAME=$(ini 1value "project:pkgname")
+    test -f "$MKIT_INI" || die "cannot find mkit.ini: $MKIT_INI"
+    __chkiniversion
+}
+
+rec_built() {
+    #
+    # Record file $1 for deletion on `clean`
+    #
+    local file=$1
+    mkdir -p "$MKIT_LOCAL"
+    echo "$file" >> "$MKIT_LOCAL/built.lst"
+}
+
+route() {
+    #
+    # Call correct function based on $1
+    #
+    if __valid_targets | grep -qwx "^$1"; then
+        "$1"
+    else
+        {
+            echo "usage: $(basename "$0") TARGET"
+            echo
+            echo "valid targets:"
+            __valid_targets | sed 's/^/    /'
+        } >&2
+    fi
+}
+
+warn() {
+    #
+    # Print warning message
+    #
+    echo "$@" >&2
+}

utils/mkit/include/release.sh

@@ -0,0 +1,232 @@
+#!/bin/bash
+# MKit - simple install helper
+# See LICENSE file for copyright and license details.
+
+mkit_import ini
+mkit_import facts
+
+__bump_version() {
+    #
+    # Bump version on stdin by level $1 (x, y or z)
+    #
+    local rlevel=$1     # release level
+    local old           # old version
+    local oldx          # ... X
+    local oldz          # ... Z
+    local oldy          # ... Y
+    local tmpy          # Y parsing cache
+    local new           # bumped version
+    read -r old
+    oldx=${old%.*.*}
+    oldz=${old#*.*.}
+    tmpy=${old%.*}
+    oldy=${tmpy#*.}
+    case $rlevel in
+        x) new="$((oldx+MKIT_BUMPSIZE)).0.0"            ;;
+        y) new="$oldx.$((oldy+MKIT_BUMPSIZE)).0"        ;;
+        z) new="$oldx.$oldy.$((oldz+MKIT_BUMPSIZE))"    ;;
+        *) die "invalid release level: $1"  ;;
+    esac
+    echo "$new"
+}
+
+__relck() {
+    #
+    # Die if blocking condition $1 is detected
+    #
+    local condition=$1      # condition name
+    local oracle            # expected value
+    case "$condition" in
+        git_present)
+            git rev-parse HEAD >&/dev/null\
+             || die "cannot do this outside git repo"
+            ;;
+        at_relsrc)
+            oracle=$(ini 1value project:relsrc)
+            git_fact current_branch \
+              | grep -qFx "$oracle" \
+             || die "you are not on release source branch: $oracle"
+            ;;
+        not_dirty)
+            git diff --shortstat 2>/dev/null \
+              | grep -q . \
+             && die "tree is dirty!"
+            ;;
+        tags_ok)
+            git_fact latest_tag \
+              | grep -q . \
+             || die "cannot find latest tag"
+            ;;
+        vbump_hot)
+            git diff-tree --no-commit-id --name-only -r HEAD \
+              | grep -qFx mkit.ini \
+             || die "last change must be version bump in mkit.ini"
+            ;;
+        no_wip)
+            git_fact reldiff \
+              | grep '^....... WIP ' \
+             && die "WIP commit since $(git_fact latest_tag)"
+            ;;
+        ini_version)
+            oracle=$(git_fact latest_version | __bump_version "$rlevel")
+            ini 1value project:version  \
+              | grep -qFx "$oracle" \
+             || die "new version not in mkit.ini: $oracle"
+            ;;
+        *)
+            die "unknown release check: $condition"
+            ;;
+    esac
+}
+
+__release() {
+    #
+    # Prepare release
+    #
+    # Span release routines: make a signed tag, check branch
+    # and update release branch
+    #
+    # FIXME: Using project:prerl as build.sh:semver() does may not be
+    #        compatible with this release strategy
+    #
+    local rlevel=$1     # release level (x, y or z)
+    local newtag        # new tag
+    local relsrc        # release source branch (if any)
+    local reldst        # release destination branch (if any)
+
+    __relck git_present
+    __relck at_relsrc
+    __relck not_dirty
+    __relck tags_ok
+    __relck vbump_hot
+    __relck no_wip
+    __relck ini_version
+
+    newtag=$(git_fact latest_version | __bump_version "$rlevel" | git_ver2tag )
+    set -e
+    debug_var newtag
+    $MKIT_DRY && return
+    git tag -m "$(__release_msg)" "$newtag"
+
+    relsrc=$(ini 1value project:relsrc)
+    reldst=$(ini 1value project:reldst)
+    debug_var relsrc reldst
+    if test -n "$reldst" && test "$reldst" != "$relsrc"; then
+        git branch -f "$reldst" "$newtag"
+    fi
+}
+
+__release_msg() {
+    #
+    # Generate message for annotated tag
+    #
+    # The last commit before issuing a release must be "Bump version" commit
+    # suggested by _vbump_gitmsg() and  manually edited by user.  Since the
+    # commit contains changelog, this function just uses the message body.
+    #
+    # The sort message (first line) is replaced with a nicer one (with project
+    # name, codename and version).
+    #
+    echo "$(ini 1value project:name) $newtag - $(ini 1value project:codename)"
+    echo
+    git show -s --format=%B \
+      | tail -n +3
+}
+
+__vbump() {
+    #
+    # Do version bump at level $1
+    #
+    # Perform checks, compute new version, update mkit.ini and initiate
+    # 'Bump version' commit with changelog template.
+    #
+    local rlevel=$1     # bump level (x, y or z)
+    local nextver       # version after the bump
+    local cache         # cache for the message
+    __relck git_present
+    __relck at_relsrc
+    __relck not_dirty
+    nextver=$(ini 1value project:version | __bump_version "$rlevel")
+    debug_var nextver
+    $MKIT_DRY && return
+    update_version "$nextver" mkit.ini \
+      || die "failed to update version in mkit.ini"
+    git add mkit.ini \
+      || die "failed to add mkit.ini to the index"
+    cache=$(mktemp -t "mkit._vbump_gitmsg.XXXXXXXX")
+    _vbump_gitmsg > "$cache"
+    git commit -e -F "$cache"   # note: reading from stdin will break vim
+    rm "$cache"
+}
+
+_vbump_gitmsg() {
+    #
+    # Compose git message template for 'Bump version' commit
+    #
+    echo "Bump version"
+    echo ""
+    echo "Overview of changes:"
+    echo ""
+    git_fact reldiff \
+      | sed '
+            s/^[a-f0-9]\{7\} /\n *  &/; t PATHS
+            s/^/        /
+            :PATHS
+        '
+}
+
+release() {
+    #
+    # Perform release on Z level
+    #
+    __release z
+}
+
+release_x() {
+    #
+    # Perform release on X level
+    #
+    __release x
+}
+
+release_y() {
+    #
+    # Perform release on Y level
+    #
+    __release y
+}
+
+release_z() {
+    #
+    # Perform release on Z level
+    #
+    __release z
+}
+
+vbump() {
+    #
+    # Perform version bump on Z level
+    #
+    __vbump z
+}
+
+vbump_x() {
+    #
+    # Perform version bump on X level
+    #
+    __vbump x
+}
+
+vbump_y() {
+    #
+    # Perform version bump on Y level
+    #
+    __vbump y
+}
+
+vbump_z() {
+    #
+    # Perform version bump on Z level
+    #
+    __vbump z
+}

utils/mkit/include/vars.sh

@@ -0,0 +1,61 @@
+#!/bin/bash
+#shellcheck disable=SC2034
+# MKit - simple install helper
+# See LICENSE file for copyright and license details.
+
+
+#
+# Bump size (for vbump_? and release_?)
+#
+MKIT_BUMPSIZE=${MKIT_BUMPSIZE:-1}
+
+#
+# Debug mode (true|false)
+#
+MKIT_DEBUG=${MKIT_DEBUG:-false}
+
+#
+# Default deploy mode for files
+#
+MKIT_DEFAULT_MODE="644"
+
+#
+# Dry mode (true|false)
+#
+# Set to true to not install anything. Implies MKIT_DEBUG.
+#
+MKIT_DRY=${MKIT_DRY:-false}
+
+#
+# Path to mkit.ini
+#
+MKIT_INI=${MKIT_INI:-mkit.ini}
+
+#
+# Limit ini expansion depth
+#
+# To avoid endless loops, this value is subtracted each
+# time ini() expands a reference; when zero is reached,
+# no more expansions happen.
+#
+MKIT_INI_EXPAND=2
+
+#
+# Path to MKit local config and temp
+#
+# Typically hidden in project root, here MKit can
+# save its temporary lists.
+#
+MKIT_LOCAL=${MKIT_LOCAL:-.mkit}
+
+#
+# Package name
+#
+# Used as base for tarball and in some default tokens.
+#
+MKIT_PROJ_PKGNAME=""
+
+#
+# This MKit version
+#
+MKIT_VERSION=0.0.28

utils/mkit/make

@@ -0,0 +1,34 @@
+#!/bin/bash
+#shellcheck disable=SC2034
+# mkit - simple install helper
+# See LICENSE file for copyright and license details.
+
+init_core() {
+    #
+    # Load core module (or die)
+    #
+    #shellcheck disable=SC1090
+    . "$MKIT_DIR/include/mkit.sh" \
+     && . "$MKIT_DIR/include/vars.sh" \
+     && return 0
+    echo "failed to load core; check if MKIT_DIR is set properly: $MKIT_DIR" >&2
+    exit 9
+}
+
+#
+# Path to MKit dir (where 'include' is)
+#
+MKIT_DIR=${MKIT_DIR:-$(dirname "$0")}
+
+
+init_core
+
+case "$1" in
+    -V|--version-semver)    echo "$MKIT_VERSION"; exit 0 ;;
+    --version)              echo "Mkit (Simple Makefile target helper) $MKIT_VERSION"
+                            exit 0 ;;
+esac
+
+mkit_init
+
+route "$@"

utils/mkit/mkit.mk

@@ -0,0 +1,56 @@
+# mkit - Simple Makefile target helper
+# See LICENSE file for copyright and license details.
+
+export MKIT_DIR
+
+all: build
+
+_mkit_data:
+	@"$(MKIT_DIR)"/make _mkit_data
+
+build:
+	@"$(MKIT_DIR)"/make build
+
+clean:
+	@"$(MKIT_DIR)"/make clean
+
+debstuff: dist
+	@"$(MKIT_DIR)"/make debstuff
+
+dist: clean
+	@"$(MKIT_DIR)"/make dist
+
+rpmstuff: dist
+	@"$(MKIT_DIR)"/make rpmstuff
+
+install: all
+	@"$(MKIT_DIR)"/make install
+
+release:
+	@"$(MKIT_DIR)"/make release
+
+release_x:
+	@"$(MKIT_DIR)"/make release_x
+
+release_y:
+	@"$(MKIT_DIR)"/make release_y
+
+release_z:
+	@"$(MKIT_DIR)"/make release_z
+
+uninstall:
+	@"$(MKIT_DIR)"/make uninstall
+
+vbump:
+	@"$(MKIT_DIR)"/make vbump
+
+vbump_x:
+	@"$(MKIT_DIR)"/make vbump_x
+
+vbump_y:
+	@"$(MKIT_DIR)"/make vbump_y
+
+vbump_z:
+	@"$(MKIT_DIR)"/make vbump_z
+
+.PHONY: all _mkit_data clean dist rpmstuff install uninstall release release_x release_y release_z vbump vbump_x vbump_y vbump_z

utils/mkit/stub

@@ -0,0 +1,724 @@
+#!/bin/bash
+# mkit - simple install helper
+# See LICENSE file for copyright and license details.
+
+init_core() {
+    #
+    # Load core modules (or die)
+    #
+    #shellcheck disable=SC1090
+    . "$MKIT_DIR/include/mkit.sh" \
+     && . "$MKIT_DIR/include/vars.sh" \
+     && return 0
+    echo "failed to load core; check if MKIT_DIR is set properly: $MKIT_DIR" >&2
+    exit 9
+}
+
+#
+# Path to MKit dir (where 'include' is)
+#
+MKIT_DIR=${MKIT_DIR:-$(dirname "$0")}
+
+init_core
+
+mkit_import ini
+
+declare -A MKIT_STUB_LICENSES
+MKIT_STUB_LICENSES[GPLv1]="http://www.gnu.org/licenses/old-licenses/gpl-1.0.md"
+MKIT_STUB_LICENSES[GPLv2]="http://www.gnu.org/licenses/old-licenses/gpl-2.0.md"
+MKIT_STUB_LICENSES[GPLv3]="http://www.gnu.org/licenses/gpl-3.0.md"
+MKIT_STUB_LICENSES[LGPLv2]="http://www.gnu.org/licenses/old-licenses/lgpl-2.1.md"
+MKIT_STUB_LICENSES[LGPLv3]="http://www.gnu.org/licenses/lgpl-3.0.md"
+MKIT_STUB_LICENSES[AGPLv3]="http://www.gnu.org/licenses/agpl-3.0.md"
+MKIT_STUB_LICENSES[FDLv1.3]="http://www.gnu.org/licenses/fdl-1.3.md"
+MKIT_STUB_LICENSES[FDLv1.2]="http://www.gnu.org/licenses/old-licenses/fdl-1.2.md"
+MKIT_STUB_LICENSES[FDLv1.1]="http://www.gnu.org/licenses/old-licenses/fdl-1.1.md"
+
+
+deploy() {
+    local file=$1       # which known file?
+    local any_name=${NiceName:-$PackageName}
+    local tmp
+    tmp=$(mktemp -t mkit.stub.deploy.XXXXXXX)
+    mkdir -p "$(dirname "$file")"
+    case $file in
+
+        Makefile)
+            echo -n "# $any_name"
+            test -n "$Tagline" && echo -n " - $Tagline"
+            echo
+            $MkLicense && echo '# See LICENSE.md file for copyright and license details.'
+            echo ''
+            echo 'MKIT_DIR=utils/mkit'
+            #shellcheck disable=SC2016
+            echo 'include $(MKIT_DIR)/mkit.mk'
+            ;;
+
+        README.md)
+            echo "$any_name"
+            tr -c '=\n' '=' <<<"$any_name"
+            echo ''
+            if test -n "$Tagline"; then
+                echo "$Tagline"
+            else
+                echo "(Nothing to say about this project.)"
+            fi
+            ;;
+
+        */mkit.ini|mkit.ini)
+            echo "[project]"
+            {
+                echo "version = $Version"
+                test -n "$Codename"     && echo "codename    = $Codename"
+                test -n "$NiceName"     && echo "name        = $NiceName"
+                test -n "$Tagline"      && echo "tagline     = $Tagline"
+                test -n "$PackageName"  && echo "pkgname     = $PackageName"
+                test -n "$Maintainer"   && echo "maintainer  = $Maintainer"
+                test -n "$VcsBrowser"   && echo "vcs_browser = $VcsBrowser"
+                test -n "$RelSrc"       && echo "relsrc      = $RelSrc"
+                test -n "$RelDst"       && echo "reldst      = $RelDst"
+            } | reformat_section
+            if updating; then
+                remake_section dist
+                remake_section ENV
+                remake_section roots
+                remake_section tokens
+                remake_section modes
+                remake_section files
+            else
+                echo ""
+                echo "[dist]"
+                {
+                    $MkLicense  && echo "tarball = LICENSE.md"
+                    $MkMakefile && echo "tarball = Makefile"
+                    $MkReadme   && echo "tarball = README.md"
+                    echo "tarball = mkit.ini"
+                    $MkPackaging && echo "tarball = packaging"
+                    echo "tarball = src"
+                    echo "tarball = tests"
+                    echo "tarball = utils"
+                    $MkPackaging && echo "rpmstuff = packaging/template.spec"
+                    $MkPackaging && echo "debstuff = packaging/debian"
+                } | reformat_section
+                echo ""
+                echo "[ENV]"
+                {
+                    echo "    PREFIX = /usr/local"
+                } | reformat_section
+                echo ""
+                echo "[roots]"
+                {
+                    echo "bin = [ENV:PREFIX]/bin"
+                    echo "doc = [ENV:PREFIX]/share/doc/$PackageName"
+                } | reformat_section
+                echo ""
+                echo "[tokens]"
+                {
+                    echo "__${PackageName^^}_FOO__ = Barr.."
+                } | reformat_section
+                echo ""
+                echo "[modes]"
+                {
+                    echo "bin = 755"
+                    echo "doc = 644"
+                } | reformat_section
+                echo ""
+                echo "[files]"
+                {
+                    echo "bin = src/$PackageName"
+                    $MkLicense && echo "doc = LICENSE.md"
+                    $MkReadme  && echo "doc = README.md"
+                } | reformat_section
+            fi
+            echo ""
+            echo "#mkit version=$MKIT_VERSION"
+            ;;
+
+        packaging/template.spec)
+            echo 'Name:       __MKIT_PROJ_PKGNAME__'
+            echo 'Version:    __MKIT_PROJ_VERSION__'
+            echo 'Release:    1%{?dist}'
+            echo 'Summary:    __MKIT_PROJ_NAME__ - __MKIT_PROJ_TAGLINE__'
+            test -n "$VcsBrowser" && echo 'URL:        __MKIT_PROJ_VCS_BROWSER__'
+            $MkLicense && echo "License:    $License"
+            echo ''
+            echo 'Source0:    %{name}-%{version}.tar.gz'
+            echo 'BuildArch:  noarch'
+            echo ''
+            echo 'Requires: MKIT_STUB_REQUIRES'
+            echo '%description'
+            echo 'MKIT_STUB_DESCRIPTION'
+            echo ''
+            echo '%prep'
+            echo '%setup -q'
+            echo ''
+            echo '%build'
+            echo 'make %{?_smp_mflags} PREFIX=/usr'
+            echo ''
+            echo '%install'
+            echo '%make_install PREFIX=/usr'
+            echo ''
+            echo '%files'
+            echo 'MKIT_STUB_FILELIST'
+            echo ''
+            echo '%changelog'
+            echo ''
+            echo '# specfile built with MKit __MKIT_SELF_VERSION__'
+            ;;
+
+        packaging/debian/copyright)
+            echo ""
+            ;;
+
+        packaging/debian/control)
+            echo 'Source: __MKIT_PROJ_PKGNAME__'
+            echo 'Maintainer: __MKIT_PROJ_MAINTAINER__'
+            test -n "$VcsBrowser" && echo 'Vcs-Browser: __MKIT_PROJ_VCS_BROWSER__'
+            echo 'Section: misc'
+            echo 'Priority: extra'
+            echo 'Standards-Version: 3.9.2'
+            echo 'Build-Depends: debhelper (>= 9)'
+            echo ''
+            echo 'Package: __MKIT_PROJ_PKGNAME__'
+            echo 'Architecture: all'
+            echo 'Depends: MKIT_STUB_REQUIRES'
+            echo 'Description: __MKIT_PROJ_NAME__ - __MKIT_PROJ_TAGLINE__'
+            echo ' MKIT_STUB_DESCRIPTION'
+            echo ''
+            echo '# control file built with MKit __MKIT_SELF_VERSION__'
+            ;;
+
+        packaging/debian/changelog)
+            echo '__MKIT_PROJ_PKGNAME__ (__MKIT_PROJ_VERSION__-1) UNRELEASED; urgency=medium'
+            echo ''
+            echo '  * Initial release. (Closes: #XXXXXX)'
+            echo ''
+            echo " -- __MKIT_PROJ_MAINTAINER__  $(date -R)"
+            ;;
+
+        packaging/debian/compat)
+            echo 9
+            ;;
+
+        packaging/debian/rules)
+            echo '#!/usr/bin/make -f'
+            echo ''
+            echo '%:'
+            echo ''
+            echo '	dh $@'
+            echo ''
+            echo 'override_dh_auto_install:'
+            echo ''
+            echo '	make install PREFIX=/usr DESTDIR=debian/tmp'
+            ;;
+
+        packaging/debian/source/format)
+            echo '3.0 (quilt)'
+            ;;
+
+        packaging/debian/install)
+            echo MKIT_STUB_FILELIST
+            ;;
+
+        src/*.skel)
+            echo 'echo "my version is: __MKIT_PROJ_VERSION__"'
+            echo 'echo "And that'"'"'s all, folks!"'
+            ;;
+
+        LICENSE.md)
+            local url   # license URL
+            url="${MKIT_STUB_LICENSES[$License]}"
+            curl -sf "$url" \
+             || die "failed to download license: $url"
+            ;;
+
+        .mkit/autoclean)
+            ;;
+
+        MKIT_STUB_README.md)
+            echo "FINISHING MKIT CONFIGURATION"
+            echo "============================"
+            echo ""
+            echo "Congratulations, your new project has been configured!"
+            echo ""
+            echo "However, the *stub* script is not able to figure out"
+            echo "everything, so few things still need to be done manually."
+            echo "This document will guide you throught the rest of the"
+            echo "process."
+
+            echo ""
+            echo ""
+            echo "Structure"
+            echo "---------"
+            echo ""
+            echo "First, let's go through the directory structure:"
+            echo ""
+            echo " *  *src* directory - here is your main place to store"
+            echo "    source files.  This includes also documents like user"
+            echo "    manuals---IOW, anything intended to end up on user's"
+            echo "    machine should be uder 'src'."
+            echo ""
+            echo "    Note that during build time, files named ending with"
+            echo "    '.skel' are subject to token expansion, see mkit.ini"
+            echo "    section below for details."
+            echo ""
+            echo " *  *notes* directory - here you shall store notes"
+            echo "    intended for people contributing to your project,"
+            echo "    for instance, guidelines, coding style documents,"
+            echo "    TODOs, ideas, plans..."
+            echo ""
+            echo " *  *utils* directory - here you shall store utilities"
+            echo "    and scripts that will help you with project maintenance,"
+            echo "    and that, unlike software like compilers or versioning"
+            echo "    systems, can (and should) be embedded inside the"
+            echo "    repository."
+            echo ""
+            echo "    MKit itself is one nice example. :)"
+
+            if $MkPackaging; then
+            echo ""
+            echo " *  *packaging* directory contains templates that enable"
+            echo "    MKit create raw stuffs used to create DEB or RPM"
+            echo "    packages.  Similar to '.skel' files in 'src', all files"
+            echo "    here are automatically considered for token expansion,"
+            echo "    no matter how they are named (see mkit.ini section"
+            echo "    below)."
+            echo ""
+            echo "    NOTE: these templates, as well as any packages created by"
+            echo "    them are intended only for experimental, private use and"
+            echo "    testing."
+            echo ""
+            echo "    Should you have ambition to create 'real' packages for"
+            echo "    OS distribution such as Debian or Fedora (what a great"
+            echo "    idea!), be prepared that you will need to follow their"
+            echo "    guidelines.  This will most probably mean huge changes"
+            echo "    to these packages or even changes to your workflow."
+
+            echo ""
+            echo ""
+            echo "Placeholders"
+            echo "------------"
+            echo ""
+            echo "At places where *stub* script did not have way to get all"
+            echo "information automatically, it has inserted placeholders."
+            echo "You will need to go through all of these placeholders and"
+            echo "replace them with proper data."
+            echo ""
+            echo "Please follow instructions:"
+            echo ""
+            echo " 1. Look for placeholders starting with \`MKIT_STUB_\`"
+            echo "    prefix by calling this command:"
+            echo ""
+            echo "        grep -l MKIT_STUB_ -r"
+            echo ""
+            echo " 2. Go through each file and locate the placeholder.  (You"
+            echo "    will also see placeholders like \`__MKIT_*__\`, you can"
+            echo "    ignore those."
+            echo ""
+            echo " 3. Replace placeholder with appropriate information:"
+            echo ""
+            echo "     *  \`MKIT_STUB_REQUIRES\` - Requirements of your"
+            echo "        project."
+            echo ""
+            echo "     *  \`MKIT_STUB_DESCRIPTION\` - Description of your"
+            echo "        project (few sentences to paragraphs)."
+            echo ""
+            echo "     *  \`MKIT_STUB_FILELIST\` - List of full paths to"
+            echo "        your files after installation."
+            echo ""
+            echo "        Note that in case of debian/install files, PREFIX"
+            echo "        based paths (eg. /usr/bin) in this file should be as"
+            echo "        if PREFIX was /usr."
+            echo ""
+            echo "        In case of Fedora-based distro, you should make use"
+            echo "        of RPM macros:"
+            echo ""
+            echo "            https://fedoraproject.org/wiki/Packaging:RPMMacros"
+            echo ""
+            echo "    Refer to these documents for further details:"
+            echo ""
+            echo "        http://rpm-guide.readthedocs.io/"
+            echo "        https://www.debian.org/doc/manuals/maint-guide/"
+            fi
+
+            echo ""
+            echo ""
+            echo "mkit.ini"
+            echo "--------"
+            echo ""
+            echo "Most sections still need to be reviewed. In order to do"
+            echo "that, you will need to understand how MKit works:"
+            echo ""
+            echo " 1. First, you need to define *roles* your files will play"
+            echo "    when they are installed on user's file systems.  These"
+            echo "    roles then imply where and how the files should be"
+            echo "    deployed."
+            echo ""
+            echo "    Typical example of a role is e.g. 'bin' for commands"
+            echo "    (normally under '/usr/bin' or '/usr/local/bin'), 'doc'"
+            echo "    for documents or 'lib' for libraries."
+
+            echo ""
+            echo " 2. Next, in \`[roots]\` section, you have to set target"
+            echo "    root directory for each role.  However, in order to"
+            echo "    enable people to implement local conventions, it is"
+            echo "    considered a good manner to also respect PREFIX"
+            echo "    environment variable.  For this reason, most paths"
+            echo "    need to start with \`[ENV:PREFIX]\`."
+            echo ""
+
+            echo " 3. \`[files]\` section is where you assign actual files"
+            echo "    from your repository to their final paths.  The format"
+            echo "    is \`ROLE = REPOPATH [RENAMED]\`, where ROLE is file's"
+            echo "    role, REPOPATH is relative path to the file."
+            echo ""
+            echo "    Final path is then composed by taking path assigned to"
+            echo "    ROLE and appending file's name.  However, if you need"
+            echo "    the deployed file to have different name than in the"
+            echo "    codebase, you can specify the other name as RENAMED."
+            echo ""
+            echo "    Note that you don't need to address every single file"
+            echo "    individually, if in your repo you have a directory with"
+            echo "    100 files of the same role, you can add just path to the"
+            echo "    directory itself."
+
+            echo ""
+            echo " 4. If some roles require special permissions on your files,"
+            echo "    \`[modes]\` section is your friend.  Permissions here"
+            echo "    should be in UNIX octal format."
+
+            echo ""
+            echo " 5. Next, \`[tokens]\` section allows you to define own"
+            echo "    placeholders that will be replaced when your scripts are"
+            echo "    built.  Each file in 'src' directory that is named with"
+            echo "    '.skel' suffix, and each file from 'packaging' directory"
+            echo "    (no matter its name), can contain one or more of tokens"
+            echo "    defined here, plus range of tokens automatically defined"
+            echo "    by MKit.  During build, these tokens are replaced with"
+            echo "    their actual values."
+
+            echo ""
+            echo " 6. Less interesting, but important section is \`[dist]\`,"
+            echo "    which lists files in your codebase that will be added"
+            echo "    to distribution tarball (part of \"stuffs\" mentioned"
+            echo "    above).  Listing directory here will include all its"
+            echo "    contents, and normally it's OK to be very inclusive, so"
+            echo "    most of the time this section should be OK."
+
+            echo ""
+            echo " 7. Even less interesting is section \`[ENV]\`.  It is"
+            echo "    special in that it provides *default* value for an"
+            echo "    environment variable.  You almost never need to touch"
+            echo "    this."
+            echo ""
+
+            echo " 8. Finally, the most interesting section!  \`[project]\`,"
+            echo "    provides most general information for your project such"
+            echo "    as name and version."
+            echo ""
+            echo "    Note that the \`version\` key is another \"special"
+            echo "    snowflake\" -- it is now set to 0.0.0, and you **should"
+            echo "    not need** to change  it manually.  When you feel you"
+            echo "    a are ready to release next version of your evolving"
+            echo "    project, simply call \`make vbump\` and MKit will take"
+            echo "    care of everything!"
+
+            if $MkMakefile; then
+            echo ""
+            echo ""
+            echo "Makefile"
+            echo "--------"
+            echo ""
+            echo "*stub* script also created a Makefile for you, but all"
+            echo "it really does is include MKit's own mkit.mk, which in turn"
+            echo "only maps \`make\` targets to actual mkit script calls."
+            echo "Unless your project already uses GNU Make, you should not"
+            echo "need to change this file."
+            fi
+
+            if $MkReadme; then
+            echo ""
+            echo ""
+            echo "README.md"
+            echo "---------"
+            echo ""
+            echo "Each serious project needs a serious README.  Which is why"
+            echo "*stub* has created a 'stub' of one for you."
+            fi
+
+            echo ""
+            echo ""
+            echo "The final touch"
+            echo "---------------"
+            echo ""
+            echo "Once you have reviewed everything, just delete this file!"
+            ;;
+
+    esac >"$tmp"
+    cat "$tmp" > "$file"
+    rm "$tmp"
+}
+
+known_licenses() {
+    local key
+    local first=true
+    for key in "${!MKIT_STUB_LICENSES[@]}"; do
+        $first && echo "$key"  && continue
+        echo ", $key"
+    done
+}
+
+usage() {
+    {
+        echo "Usage:"
+        echo "   stub [options] new PKGNAME"
+        echo "   stub [options] update"
+        echo "   stub -L"
+        echo ""
+        echo "Options:"
+        echo ""
+        echo "    -c CODENAME   your project codename"
+        echo "    -t TAGLINE    your project tagline"
+        echo "    -b RELSRC     pre-release branch"
+        echo "    -B RELDST     post-release branch"
+        echo "    -n NICENAME   your project's 'nice' name"
+        echo "    -l LICENSE    your options's license (see -L)"
+        echo "    -m MAINT      project maintainer's name and e-mail"
+        echo "    -v URL        URL to public code browser"
+        echo "    -V VERSION    initial version (default: 0.0.0)"
+        echo "    -a            enable autoclean ('make clean' after"
+        echo "                  each 'make install')"
+        echo "    -g            make git commits before and adter"
+        echo "                  (implies -y)"
+        echo "    -y            don't ask, just do it"
+        echo "    -R            skip creating README.md"
+        echo "    -M            skip creating Makefile"
+        echo "    -P            skip creating packaging templates"
+        echo "    -L            list know licenses and exit"
+        echo ""
+        echo "PKGNAME should be packaging-friendly name, ie. consist"
+        echo "only of small letters, numbers, underscore and dash."
+        echo "For your 'real' name, use NICENAME, which can be any"
+        echo "string."
+    } >&2
+    exit 2
+}
+
+confirm() {
+    local response      # user's response to our warning
+    $Force && return 0
+    {
+        echo "Warning: This operation can be destructive for your"
+        echo "current codebase.  At least following files will be"
+        echo "created or overwritten:"
+        echo ""
+        $MkPackaging    && echo " *  'packaging' directory (pass -P to avoid)"
+        $MkMakefile     && echo " *  'Makefile' (pass -M to avoid)"
+        $MkReadme       && echo " *  'README.md' (pass -R to avoid)"
+        $MkLicense      && echo " *  'LICENSE.md' (omit -l to avoid)"
+        echo " *  'mkit.ini'"
+        echo ""
+        read -p "Type 'yes' to proceed: " -r response
+    } >&2
+    test "$response" == "yes" && return 0
+    warn "Aborting."
+    return 1
+}
+
+mkcommit_backup() {
+    git ls-files --others \
+      | grep -qv -e '^utils/mkit$' -e '^utils/mkit/' \
+     || { warn "nothing to back up"; return 0; }
+    git add .                           || return
+    git rm -r --cached utils/mkit       || return
+    git commit -m "WIP [mkit/stub] backup" || return
+}
+
+mkcommit_mkit_code() {
+    git ls-files --others \
+      | grep -q -e '^utils/mkit$' -e '^utils/mkit/' \
+     || return 0
+    git add utils/mkit || return
+    git commit -m "WIP [mkit/stub] Add MKit version v$MKIT_VERSION" || return
+}
+
+mkcommit_mkit_conf() {
+    local msg       # commit message (the important art
+    git add . || return
+    case $Action in
+        new)    msg="Add MKit configuration stub" ;;
+        update) msg="Update MKit configuration"   ;;
+    esac
+    git commit -m "WIP [mkit/stub] $msg" || return
+}
+
+deploy_packaging() {
+    rm -rf packaging
+    deploy packaging/template.spec
+    deploy packaging/debian/copyright
+    deploy packaging/debian/control
+    deploy packaging/debian/changelog
+    deploy packaging/debian/compat
+    deploy packaging/debian/install
+    deploy packaging/debian/rules
+    deploy packaging/debian/source/format
+}
+
+init_from_existing() {
+    #
+    # Initialize variables from old mkit.ini
+    #
+    test -f "$MKIT_INI" \
+     || die "mkit.ini not found; aborting update: $MKIT_INI"
+    user_gave Codename    || Codename=$(ini_raw1v project:codename)
+    user_gave License     || License=$(ini_raw1v project:license)
+    user_gave Maintainer  || Maintainer=$(ini_raw1v project:maintainer)
+    user_gave NiceName    || NiceName=$(ini_raw1v project:name)
+    user_gave PackageName || PackageName=$(ini_raw1v project:pkgname)
+    user_gave RelDst      || RelDst=$(ini_raw1v project:reldst)
+    user_gave RelSrc      || RelSrc=$(ini_raw1v project:relsrc)
+    user_gave Tagline     || Tagline=$(ini_raw1v project:tagline)
+    user_gave VcsBrowser  || VcsBrowser=$(ini_raw1v project:vcs_browser)
+    user_gave Version     || Version=$(ini_raw1v project:version)
+}
+
+ini_raw1v() {
+    #
+    # Read raw scalar from mkit.ini
+    #
+    local path=$1
+    MKIT_INI_EXPAND=0 ini 1value "$path"
+}
+
+user_gave() {
+    #
+    # True if user gave value to variable $1
+    #
+    local var=$1    # name of the variable
+    { test "${UserGave[$var]}" == 1; } 2>/dev/null
+}
+
+updating() {
+    #
+    # Are we updating?
+    #
+    test "$Action" == update
+}
+
+remake_section() {
+    #
+    # Re-compose mkit.ini section $1
+    #
+    local section=$1
+    local key
+    local value
+    ini lskeys "$section" | grep -q . \
+     || return 1
+    echo ""
+    echo "[$section]"
+    ini lskeys "$section" \
+      | while read -r key; do
+            MKIT_INI_EXPAND=0 ini values "$section:$key" \
+              | while read -r value; do
+                    echo "$key = $value"
+                done
+        done \
+      | reformat_section
+}
+
+reformat_section() {
+    #
+    # Re-format "k = v" on stdin as "nice" ini section
+    #
+    local key
+    local eq
+    local value
+    while read -r key eq value; do
+        test "$eq" == "=" || {
+            warn "ignoring malformed ini line: $key $eq $value"
+            continue
+        }
+        echo "$key = $value"
+    done \
+      | sed 's/ *= */=/; s/^ *//; s/ *$//' \
+      | column -t -s= -o' = ' \
+      | sed 's/^/    /'
+}
+
+main() {
+    local NiceName          # human-readable project name
+    local PackageName       # machine-safe project (package) name
+    local RelSrc            # pre-release branch
+    local RelDst            # post-release branch
+    local Codename          # release codename
+    local Tagline           # project tagline
+    local Maintainer        # project maintainer (Name + e-mail)
+    local VcsBrowser        # VCS browser (eg. GitHub URL)
+    local Version=0.0.0     # project version
+    local AutoClean=false   # touch .mkit/autoclean?
+    local MkCommits=false   # create pre/post git commits?
+    local Force=false       # go without asking?
+    local MkReadme=true     # create README.md?
+    local MkMakefile=true   # create Makefile?
+    local MkPackaging=true  # create packaging templates?
+    local MkLicense=false   # create LICENSE.md file
+    local Action            # 'update' to respect existing, 'new' to force
+                            # rewrite incl. MKIT_STUB_* placeholders
+    declare -A UserGave
+    while true; do case $1 in
+        -n) NiceName=$2;   UserGave[NiceName]=1;   shift 2 || usage ;;
+        -b) RelSrc=$2;     UserGave[RelSrc]=1;     shift 2 || usage ;;
+        -B) RelDst=$2;     UserGave[RelDst]=1;     shift 2 || usage ;;
+        -c) Codename=$2;   UserGave[Codename]=1;   shift 2 || usage ;;
+        -t) Tagline=$2;    UserGave[Tagline]=1;    shift 2 || usage ;;
+        -l) License=$2;    UserGave[License]=1;    shift 2 || usage ;;
+        -m) Maintainer=$2; UserGave[Maintainer]=1; shift 2 || usage ;;
+        -v) VcsBrowser=$2; UserGave[VcsBrowser]=1; shift 2 || usage ;;
+        -V) Version=$2;    UserGave[Version]=1;    shift 2 || usage ;;
+        -M) MkMakefile=false;   shift ;;
+        -R) MkReadme=false;     shift ;;
+        -a) AutoClean=true;     shift ;;
+        -y) Force=true;         shift ;;
+        -g) MkCommits=true;     shift ;;
+        -P) MkPackaging=false;  shift ;;
+        -L) known_licenses | tr , '\n'; exit 0 ;;
+        -*) usage ;;
+        *)  break ;;
+    esac done
+    Action=$1; PackageName=$2
+    case $Action:$PackageName in
+        new:)     usage ;;
+        new:*)    :     ;;
+        update:)  :     ;;
+        update:*) usage ;;
+        *)        usage ;;
+    esac
+    updating && init_from_existing
+    if test -n "$License"; then
+        known_licenses | grep -qxF "$License" \
+         || die "unknown license (use -L to get list): $License"
+        MkLicense=true
+    fi
+    if $MkCommits; then
+        mkcommit_backup || die "failed creating backup commit"
+        Force=true
+    fi
+    confirm            || return 1
+    deploy "$MKIT_INI"
+    deploy src/"$PackageName".skel
+    $MkMakefile     && deploy Makefile
+    $MkReadme       && deploy README.md
+    $MkLicense      && deploy LICENSE.md
+    $AutoClean      && deploy .mkit/autoclean
+    $MkPackaging    && deploy_packaging
+    if $MkCommits; then
+        mkcommit_mkit_code || die "failed creating post-commit"
+        mkcommit_mkit_conf || die "failed creating post-commit"
+    fi
+    deploy MKIT_STUB_README.md
+    warn "Configuration stub built, follow instructions in"
+    warn "MKIT_STUB_README.md to finish configuration."
+    return 0
+}
+
+main "$@"