xbps-src: added new 'checkvers' target to check for new versions from srcpkgs

against current installed packages.

xbps-src/xbps-src.sh.in

@@ -68,27 +68,32 @@ usage()
 $progname: [-Ch] [-c <config_file>] [-m <masterdir>] [-p <pkgdir>] <target>
 
 Targets:
- bootstrap        Build and install the bootstrap packages into masterdir.
+ bootstrap        Build and install the bootstrap packages into <masterdir>.
  build            Build a package (fetch + extract + configure + build).
  build-pkg [all]  Build a binary package from <pkg>.
                   Package must be installed into destdir. If the <all>
-                  keyword is used all packages currently installed will
-		  be used.
- chroot           Enter to the chroot in masterdir.
+                  keyword is used all packages currently installed in
+		  <masterdir>/<destdir> will be used.
+ checkvers        Checks installed package versions against srcpkgs
+                  for new available versions.
+ chroot           Enter to the chroot in <masterdir>.
  configure        Configure a package (fetch + extract + configure).
  extract          Extract distribution file(s) into build directory.
+                  Build directory is always available in
+		  <masterdir>/pkg-builddir/<pkg>.
  fetch            Download distribution file(s).
  info             Show information for current pkg build template.
  install-destdir  build + install into destdir.
  install          install-destdir + stow.
- list             List installed packages in masterdir.
+ list             List installed packages in <masterdir>.
  listfiles        List installed files from <pkg>.
  make-repoidx     Build a package index for the local repository associated
-                  with the master directory, or updates it.
+                  with the master directory <masterdir> or <pkgdir>,
+		  or updates it.
  remove           Remove package completely (destdir + masterdir).
- stow             Stow <pkg> files from destdir into masterdir and
+ stow             Stow <pkg> files from <destdir> into <masterdir> and
                   register package in database.
- unstow           Remove <pkg> files from masterdir and unregister
+ unstow           Remove <pkg> files from <masterdir> and unregister
                   package from database.
 
 Options:
@@ -99,7 +104,7 @@ Options:
  -m     Master directory, overwritting the value set in the configuration
         file at @@XBPS_INSTALL_ETCDIR@@/xbps-src.conf.
  -p     Package directory, overwritting default path at
-        <XBPS_MASTERDIR>/pkg-binpkgs.
+        <masterdir>/pkg-binpkgs.
 
 _EOF
 }
@@ -240,7 +245,7 @@ bootstrap)
 	;;
 build|configure)
 	. $XBPS_SHUTILSDIR/tmpl_funcs.sh
-	[ ! -r ./template ] && msg_error "missing build template file."
+	[ ! -r ./template ] && msg_error "missing build template in $(pwd)."
 	. ./template
 
 	if [ -z "$base_chroot" -a -z "$in_chroot" ]; then
@@ -293,16 +298,23 @@ build-pkg)
 			fi
 		done
 	else
+		[ ! -r ./template ] && msg_error "missing build template in $(pwd)."
 		setup_tmpl $(basename_cwd)
 		xbps_make_binpkg
 	fi
 	;;
+checkvers)
+	. $XBPS_SHUTILSDIR/tmpl_funcs.sh
+	. $XBPS_SHUTILSDIR/check_installed_packages.sh
+	check_installed_packages
+	;;
 chroot)
 	. $XBPS_SHUTILSDIR/chroot.sh
 	xbps_chroot_handler chroot dummy
 	;;
 extract|fetch|info)
 	. $XBPS_SHUTILSDIR/tmpl_funcs.sh
+	[ ! -r ./template ] && msg_error "missing build template in $(pwd)."
 	setup_tmpl $(basename_cwd)
 	if [ "$target" = "info" ]; then
 		. $XBPS_SHUTILSDIR/tmpl_funcs.sh
@@ -319,7 +331,7 @@ extract|fetch|info)
 	;;
 install|install-destdir)
 	. $XBPS_SHUTILSDIR/tmpl_funcs.sh
-	[ ! -r ./template ] && msg_error "missing build template file."
+	[ ! -r ./template ] && msg_error "missing build template in $(pwd)."
 	. ./template
 
 	install_destdir_target=no
@@ -354,18 +366,21 @@ make-repoidx)
 	;;
 remove)
 	. $XBPS_SHUTILSDIR/pkgtarget_funcs.sh
+	[ ! -r ./template ] && msg_error "missing build template in $(pwd)."
 	setup_tmpl $(basename_cwd)
 	remove_pkg
 	;;
 stow)
 	stow_flag=yes
 	. $XBPS_SHUTILSDIR/tmpl_funcs.sh
+	[ ! -r ./template ] && msg_error "missing build template in $(pwd)."
 	setup_tmpl $(basename_cwd)
 	. $XBPS_SHUTILSDIR/stow_funcs.sh
 	stow_pkg_handler stow
 	;;
 unstow)
 	. $XBPS_SHUTILSDIR/tmpl_funcs.sh
+	[ ! -r ./template ] && msg_error "missing build template in $(pwd)."
 	setup_tmpl $(basename_cwd)
 	. $XBPS_SHUTILSDIR/stow_funcs.sh
 	stow_pkg_handler unstow