debian package: provide a manpage built from README file and fix setting version and date in script

build.sh

@@ -1,16 +1,21 @@
 #!/bin/bash
+# vim: tabstop=4 shiftwidth=4 softtabstop=4 expandtab
 
-QUIET_ARG=""
-[[ "$1" == "--quiet" ]] && QUIET_ARG="--quiet"
+set -e
+
+QUIET_MODE=0
+[[ "$1" == "--quiet" ]] && QUIET_MODE=1
 
 # Enter source directory
 cd "$( dirname "$0" )" || exit
 
-CHECK_FILE="$( find "." -name 'check_*' ! -name '*~' -type f -executable | head -n 1 )"
-PACKAGE_NAME="$( basename "$CHECK_FILE" | tr '_' '-' )"
-
+if [[ -d dist ]]; then
     echo "Clean previous build..."
     rm -fr dist
+fi
+
+CHECK_FILE="$( find "." -maxdepth 1 -name 'check_*' ! -name '*~' -type f -executable | head -n 1 )"
+PACKAGE_NAME="$( basename "$CHECK_FILE" | tr '_' '-' )"
 
 echo "Detect version using git describe..."
 VERSION="$( git describe --tags|sed 's/^[^0-9]*//' )"
@@ -18,13 +23,46 @@ VERSION="$( git describe --tags|sed 's/^[^0-9]*//' )"
 echo "Create building environemt..."
 BDIR="dist/$PACKAGE_NAME-$VERSION"
 mkdir -p "$BDIR"
-RSYNC_ARG=""
-[[ -z "$QUIET_ARG" ]] && RSYNC_ARG="-v"
-rsync -a "$RSYNC_ARG" debian/ "$BDIR/debian/"
+RSYNC_ARGS=( )
+[[ $QUIET_MODE -eq 0 ]] && RSYNC_ARGS+=( -v )
+rsync -a "${RSYNC_ARGS[@]}" debian/ "$BDIR/debian/"
 cp "$CHECK_FILE" "$BDIR/"
 
-echo "Set VERSION=$VERSION in gitdch using sed..."
+if [[ -e "README.md" ]]; then
+    echo "Build manpage from README.md file..."
+    MAN_TITLE=$( basename "$CHECK_FILE" )
+    MAN_MD_FILE="$BDIR/$( basename "$CHECK_FILE" ).1.md"
+    MAN_FILE="$BDIR/$( basename "$CHECK_FILE" ).1"
+    echo "# ${MAN_TITLE^^} 1" \
+        "$( git log --follow --format=%ad --date iso README.md | head -n 1 | awk '{print $1}')" \
+        "$PACKAGE_NAME" \
+        '"User Manuals"' > "$MAN_MD_FILE"
+    sed 1d README.md >> "$MAN_MD_FILE"
+    if ! which go-md2man > /dev/null; then
+        ARG_ARGS=()
+        [[ $QUIET_MODE -eq 0 ]] && ARG_ARGS+=( -qq )
+        apt update "${ARG_ARGS[@]}"
+        apt install -y "${ARG_ARGS[@]}" go-md2man
+    fi
+    go-md2man -in "$MAN_MD_FILE" -out "$MAN_FILE"
+    basename "$MAN_FILE" >> "$BDIR/debian/manpages"
+    grep -Eq '^Build-Depends: .*go-md2man' "$BDIR/debian/control" || \
+        sed -i 's/^Build-Depends: \(.*\)$/Build-Depends: \1, go-md2man/' "$BDIR/debian/control"
+fi
+
+if grep -Eq '^VERSION *=' "$BDIR/$( basename "$CHECK_FILE" )"; then
+    echo "Set VERSION=$VERSION in $( basename "$CHECK_FILE" ) using sed..."
     sed -i "s/^VERSION *=.*$/VERSION = '$VERSION'/" "$BDIR/$( basename "$CHECK_FILE" )"
+elif grep -Eq '^# Version:' "$BDIR/$( basename "$CHECK_FILE" )"; then
+    echo "Set Version = $VERSION in $( basename "$CHECK_FILE" ) using sed..."
+    sed -i "s/^#\(\s*Version:\s*\).*$/#\1$VERSION/" "$BDIR/$( basename "$CHECK_FILE" )"
+fi
+
+if grep -Eq '^# Date:' "$BDIR/$( basename "$CHECK_FILE" )"; then
+    DATE="$( git log --follow --format=%ad --date iso "$CHECK_FILE" | head -n 1 )"
+    echo "Set Date = $DATE in $( basename "$CHECK_FILE" ) using sed..."
+    sed -i "s/^#\(\s*Date:\s*\).*$/#\1$DATE/" "$BDIR/$( basename "$CHECK_FILE" )"
+fi
 
 if [[ -z "$DEBIAN_CODENAME" ]]; then
     echo "Retrieve debian codename using lsb_release..."
@@ -35,7 +73,7 @@ fi
 
 echo "Generate debian changelog using gitdch..."
 GITDCH_ARGS=('--verbose')
-[[ -n "$QUIET_ARG" ]] && GITDCH_ARGS=('--warning')
+[[ $QUIET_MODE -eq 1 ]] && GITDCH_ARGS=('--warning')
 if [[ -n "$MAINTAINER_NAME" ]]; then
     echo "Use maintainer name from environment ($MAINTAINER_NAME)"
     GITDCH_ARGS+=("--maintainer-name" "${MAINTAINER_NAME}")
@@ -60,4 +98,5 @@ fi
 
 echo "Build debian package..."
 cd "$BDIR" || exit
+[[ $QUIET_MODE -eq 0 ]] && export DH_VERBOSE=1
 dpkg-buildpackage

check_pg_streaming_replication

@@ -20,7 +20,8 @@
 #                      ~/.pgpass).
 #
 # Author: Benjamin Renard <brenard@easter-eggs.com>
-# Date: Wed Jul 17 10:56:43 2024 +0200
+# Version: dev
+# Date: dev
 # Source: https://gitea.zionetrix.net/bn8/check_pg_streaming_replication
 # SPDX-License-Identifier: GPL-3.0-or-later
 #