[libvirt] [PATCH 15/18] tools: Provide bash autompletion file
Michal Privoznik
mprivozn at redhat.com
Tue Jan 2 17:12:08 UTC 2018
The only purpose of this file is to be sourced. After that one
can use completion even for their bash:
# virsh list --<TAB><TAB>
--all --inactive ...
Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
---
configure.ac | 3 ++
libvirt.spec.in | 3 ++
m4/virt-bash-completion.m4 | 74 ++++++++++++++++++++++++++++++++++++++++++++++
tools/Makefile.am | 22 ++++++++++++--
tools/bash-completion/vsh | 67 +++++++++++++++++++++++++++++++++++++++++
5 files changed, 167 insertions(+), 2 deletions(-)
create mode 100644 m4/virt-bash-completion.m4
create mode 100644 tools/bash-completion/vsh
diff --git a/configure.ac b/configure.ac
index fba4e4bf5..06236fad8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -242,6 +242,7 @@ LIBVIRT_ARG_APPARMOR
LIBVIRT_ARG_ATTR
LIBVIRT_ARG_AUDIT
LIBVIRT_ARG_AVAHI
+LIBVIRT_ARG_BASH_COMPLETION
LIBVIRT_ARG_BLKID
LIBVIRT_ARG_CAPNG
LIBVIRT_ARG_CURL
@@ -278,6 +279,7 @@ LIBVIRT_CHECK_ATOMIC
LIBVIRT_CHECK_ATTR
LIBVIRT_CHECK_AUDIT
LIBVIRT_CHECK_AVAHI
+LIBVIRT_CHECK_BASH_COMPLETION
LIBVIRT_CHECK_BLKID
LIBVIRT_CHECK_CAPNG
LIBVIRT_CHECK_CURL
@@ -976,6 +978,7 @@ LIBVIRT_RESULT_APPARMOR
LIBVIRT_RESULT_ATTR
LIBVIRT_RESULT_AUDIT
LIBVIRT_RESULT_AVAHI
+LIBVIRT_RESULT_BASH_COMPLETION
LIBVIRT_RESULT_BLKID
LIBVIRT_RESULT_CAPNG
LIBVIRT_RESULT_CURL
diff --git a/libvirt.spec.in b/libvirt.spec.in
index 7e1b6a27d..d4ef116b2 100644
--- a/libvirt.spec.in
+++ b/libvirt.spec.in
@@ -306,6 +306,7 @@ BuildRequires: xen-devel
BuildRequires: libxml2-devel
BuildRequires: libxslt
BuildRequires: readline-devel
+BuildRequires: bash-completion >= 2.0
BuildRequires: ncurses-devel
BuildRequires: gettext
BuildRequires: libtasn1-devel
@@ -2047,6 +2048,8 @@ exit 0
%{_datadir}/systemtap/tapset/libvirt_qemu_probes*.stp
%{_datadir}/systemtap/tapset/libvirt_functions.stp
+%{_datadir}/bash-completion/completions/vsh
+
%if %{with_systemd}
%{_unitdir}/libvirt-guests.service
diff --git a/m4/virt-bash-completion.m4 b/m4/virt-bash-completion.m4
new file mode 100644
index 000000000..e1ef58740
--- /dev/null
+++ b/m4/virt-bash-completion.m4
@@ -0,0 +1,74 @@
+dnl Bash completion support
+dnl
+dnl Copyright (C) 2017 Red Hat, Inc.
+dnl
+dnl This library is free software; you can redistribute it and/or
+dnl modify it under the terms of the GNU Lesser General Public
+dnl License as published by the Free Software Foundation; either
+dnl version 2.1 of the License, or (at your option) any later version.
+dnl
+dnl This library is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+dnl Lesser General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU Lesser General Public
+dnl License along with this library. If not, see
+dnl <http://www.gnu.org/licenses/>.
+dnl
+dnl Inspired by libguestfs code.
+dnl
+
+AC_DEFUN([LIBVIRT_ARG_BASH_COMPLETION],[
+ LIBVIRT_ARG_WITH_FEATURE([BASH_COMPLETION], [bash-completion], [check], [2.0])
+ LIBVIRT_ARG_WITH([BASH_COMPLETIONS_DIR],
+ [directory containing bash completions scripts],
+ [check])
+])
+
+AC_DEFUN([LIBVIRT_CHECK_BASH_COMPLETION], [
+ AC_REQUIRE([LIBVIRT_CHECK_READLINE])
+
+ if test "x$with_readline" != "xyes" ; then
+ if test "x$with_bash_completion" != "xyes" ; then
+ with_bash_completion=no
+ else
+ AC_MSG_ERROR([readline is required for bash completion support])
+ fi
+ else
+ if test "x$with_bash_completion" = "xcheck" ; then
+ with_bash_completion=yes
+ fi
+ fi
+
+ LIBVIRT_CHECK_PKG([BASH_COMPLETION], [bash-completion], [2.0])
+
+ if test "x$with_bash_completion" = "xyes" ; then
+ if test "x$with_bash_completions_dir" = "xcheck"; then
+ AC_MSG_CHECKING([for bash-completions directory])
+ BASH_COMPLETIONS_DIR="$($PKG_CONFIG --variable=completionsdir bash-completion)"
+ AC_MSG_RESULT([$BASH_COMPLETIONS_DIR])
+
+ dnl Replace bash completions's exec_prefix with our own.
+ dnl Note that ${exec_prefix} is kept verbatim at this point in time,
+ dnl and will only be expanded later, when make is called: this makes
+ dnl it possible to override such prefix at compilation or installation
+ dnl time
+ bash_completions_prefix="$($PKG_CONFIG --variable=prefix bash-completion)"
+ if test "x$bash_completions_prefix" = "x" ; then
+ bash_completions_prefix="/usr"
+ fi
+
+ BASH_COMPLETIONS_DIR='${exec_prefix}'"${BASH_COMPLETIONS_DIR#$bash_completions_prefix}"
+ elif test "x$with_bash_completions_dir" = "xno" || test "x$with_bash_completions_dir" = "xyes"; then
+ AC_MSG_ERROR([bash-completions-dir must be used only with valid path])
+ else
+ BASH_COMPLETIONS_DIR=$with_bash_completions_dir
+ fi
+ AC_SUBST([BASH_COMPLETIONS_DIR])
+ fi
+])
+
+AC_DEFUN([LIBVIRT_RESULT_BASH_COMPLETION],[
+ LIBVIRT_RESULT_LIB([BASH_COMPLETION])
+])
diff --git a/tools/Makefile.am b/tools/Makefile.am
index fbc73a7c3..1df2a601f 100644
--- a/tools/Makefile.am
+++ b/tools/Makefile.am
@@ -73,6 +73,7 @@ EXTRA_DIST = \
libvirt-guests.sysconf \
virt-login-shell.conf \
virsh-edit.c \
+ bash-completion/vsh \
$(PODFILES) \
$(MANINFILES) \
$(NULL)
@@ -326,9 +327,11 @@ POD2MAN = pod2man -c "Virtualization Support" -r "$(PACKAGE)-$(VERSION)"
< $< > $@-t && \
mv $@-t $@
-install-data-local: install-init install-systemd install-nss
+install-data-local: install-init install-systemd install-nss \
+ install-bash-completion
-uninstall-local: uninstall-init uninstall-systemd uninstall-nss
+uninstall-local: uninstall-init uninstall-systemd uninstall-nss \
+ uninstall-bash-completion
install-sysconfig:
$(MKDIR_P) $(DESTDIR)$(sysconfdir)/sysconfig
@@ -414,6 +417,21 @@ libvirt-guests.service: libvirt-guests.service.in $(top_builddir)/config.status
mv $@-t $@
+if WITH_BASH_COMPLETION
+install-bash-completion:
+ $(MKDIR_P) "$(DESTDIR)$(BASH_COMPLETIONS_DIR)"
+ $(INSTALL_SCRIPT) $(srcdir)/bash-completion/vsh \
+ "$(DESTDIR)$(BASH_COMPLETIONS_DIR)/vsh"
+
+uninstall-bash-completion:
+ rm -f $(DESTDIR)$(BASH_COMPLETIONS_DIR)/vsh
+ rmdir $(DESTDIR)$(BASH_COMPLETIONS_DIR) ||:
+else ! WITH_BASH_COMPLETION
+install-bash-completion:
+uninstall-bash-completion:
+endif ! WITH_BASH_COMPLETION
+
+
EXTRA_DIST += \
wireshark/util/genxdrstub.pl \
wireshark/util/make-dissector-reg
diff --git a/tools/bash-completion/vsh b/tools/bash-completion/vsh
new file mode 100644
index 000000000..8493cad28
--- /dev/null
+++ b/tools/bash-completion/vsh
@@ -0,0 +1,67 @@
+#
+# virsh & virt-admin completion command
+#
+
+_vsh_complete()
+{
+ local words cword c=0 i=0 cur RO URI CMDLINE INPUT A
+
+ # Here, $COMP_WORDS is an array of words on the bash
+ # command line that user wants to complete. However, when
+ # parsing command line, the default set of word breaks is
+ # applied. This doesn't work for us as it mangles libvirt
+ # arguments, e.g. connection URI (with the default set it's
+ # split into multiple items within the array). Fortunately,
+ # there's a fixup function for the array.
+ _get_comp_words_by_ref -n "\"'><=;|&(:" -w words -i cword
+ COMP_WORDS=( "${words[@]}" )
+ COMP_CWORD=${cword}
+ cur=${COMP_WORDS[$COMP_CWORD]}
+
+ # See what URI is user trying to connect to and if they are
+ # connecting RO. Honour that.
+ while [ $c -le $COMP_CWORD ]; do
+ word="${COMP_WORDS[c]}"
+ case "$word" in
+ -r|--readonly) RO=1 ;;
+ -c|--connect) c=$((++c)); URI=${COMP_WORDS[c]} ;;
+ *) if [ $c -ne 0 ] && [ $i -eq 0 ]; then i=$c; break; fi ;;
+ esac
+ c=$((++c))
+ done
+
+ CMDLINE=
+ if [ -n "${RO}" ]; then
+ CMDLINE="${CMDLINE} -r"
+ fi
+ if [ -n "${URI}" ]; then
+ CMDLINE="${CMDLINE} -c ${URI}"
+ fi
+
+ INPUT=( "${COMP_WORDS[@]:$i:$COMP_CWORD}" )
+
+ # Uncomment these lines for easy debug.
+# echo;
+# echo "RO=${flag_ro}";
+# echo "URI=${URI}";
+# echo "CMDLINE=${CMDLINE}";
+# echo "INPUT[${#INPUT[@]}]=**${INPUT[@]}**";
+# echo "cur=${cur}";
+# echo;
+# return 0;
+
+ # Small shortcut here. According to manpage:
+ # When the function is executed, the first argument ($1) is
+ # the name of the command whose arguments are being
+ # completed.
+ # Therefore, we might just run $1.
+ A=($($1 ${CMDLINE} complete -- "${INPUT[@]}" 2>/dev/null))
+
+ COMPREPLY=($(compgen -W "${A[*]%--}" -- ${cur}))
+ __ltrim_colon_completions "$cur"
+ return 0
+} &&
+complete -o default -o filenames -F _vsh_complete virsh &&
+complete -o default -o filenames -F _vsh_complete virt-admin
+
+# vim: ft=sh:et:ts=4:sw=4:tw=80
--
2.13.6
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