Introduce gen-manpages.sh

Script to update the man files in `doc/man/`

contrib/devtools/gen-manpages.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+
+export LC_ALL=C
+TOPDIR=${TOPDIR:-$(git rev-parse --show-toplevel)}
+BUILDDIR=${BUILDDIR:-$TOPDIR}
+
+BINDIR=${BINDIR:-$BUILDDIR/src}
+MANDIR=${MANDIR:-$TOPDIR/doc/man}
+
+BITCOIND=${BITCOIND:-$BINDIR/pivxd}
+BITCOINCLI=${BITCOINCLI:-$BINDIR/pivx-cli}
+BITCOINTX=${BITCOINTX:-$BINDIR/pivx-tx}
+BITCOINQT=${BITCOINQT:-$BINDIR/qt/pivx-qt}
+
+[ ! -x $BITCOIND ] && echo "$BITCOIND not found or not executable." && exit 1
+
+# The autodetected version git tag can screw up manpage output a little bit
+BTCVER=($($BITCOINCLI --version | head -n1 | awk -F'[ -]' '{ print $6, $7 }'))
+
+# Create a footer file with copyright content.
+# This gets autodetected fine for bitcoind if --version-string is not set,
+# but has different outcomes for bitcoin-qt and bitcoin-cli.
+echo "[COPYRIGHT]" > footer.h2m
+$BITCOIND --version | sed -n '1!p' >> footer.h2m
+
+for cmd in $BITCOIND $BITCOINCLI $BITCOINTX $BITCOINQT; do
+  cmdname="${cmd##*/}"
+  help2man -N --version-string=${BTCVER[0]} --include=footer.h2m -o ${MANDIR}/${cmdname}.1 ${cmd}
+  sed -i "s/\\\-${BTCVER[1]}//g" ${MANDIR}/${cmdname}.1
+done
+
+rm -f footer.h2m