Add pdc bash completion file.

Install `pdc.bash` to `/etc/bash_completion.d/`.

JIRA: PDC-1611

README.markdown

@@ -78,6 +78,18 @@ performing the network requests manually.
 This is much more user friendly user interface. A single invocation can
 perform multiple requests depending on what subcommand you used.
 
+The `pdc` client supports Bash completion if argcomplete Python package is installed.
+
+If you installed client from rpm package, the completion file `pdc.bash` has been
+installed to `/etc/bash_completion.d/`.
+
+For developers or users who try to run `pdc` from source, to enable completion,
+run this in your terminal (assuming pdc is somewhere on path).
+
+    eval "$(register-python-argcomplete pdc)"
+
+or put `pdc.bash` to `/etc/bash_completion.d/`.
+
 ## Python API
 
 When writing a client code interfacing with PDC server, you might find
@@ -90,6 +102,7 @@ include
 - [requests](http://docs.python-requests.org/en/latest/)
 - [requests-kerberos](https://github.com/requests/requests-kerberos/)
 - [beanbag](http://beanbag.readthedocs.org/en/latest/)
+- (Optional)[argcomplete](http://argcomplete.readthedocs.org/en/latest/_modules/argcomplete.html)
 
 Please find more details at： [`PDCClient`](pdc_client/__init__.py#L71)
 

pdc-client.spec

@@ -37,6 +37,9 @@ mkdir -p %{buildroot}%{_defaultdocdir}/pdc_client
 install -m 0644 -D -p bin/pdc_client %{buildroot}%{_bindir}/pdc_client
 install -m 0644 -D -p bin/pdc %{buildroot}%{_bindir}/pdc
 
+# Install pdc bash argcompletion file
+install -m 0644 -D -p pdc.bash %{buildroot}%{_sysconfdir}/bash_completion.d/pdc.bash
+
 install -m 0644 -D -p docs/pdc_client.1 %{buildroot}%{_mandir}/man1/pdc_client.1
 gzip %{buildroot}%{_mandir}/man1/pdc_client.1
 
@@ -46,6 +49,7 @@ gzip %{buildroot}%{_mandir}/man1/pdc_client.1
 %attr(755, root, root) %{_bindir}/pdc_client
 %attr(755, root, root) %{_bindir}/pdc
 %{_mandir}/man1/pdc_client.1.gz
+%{_sysconfdir}/bash_completion.d/pdc.bash
 
 
 %changelog

pdc.bash

@@ -0,0 +1,9 @@
+
+_python_argcomplete() {
+    local IFS=''
+    COMPREPLY=( $(IFS="$IFS"                   COMP_LINE="$COMP_LINE"                   COMP_POINT="$COMP_POINT"                   _ARGCOMPLETE_COMP_WORDBREAKS="$COMP_WORDBREAKS"                   _ARGCOMPLETE=1                   "$1" 8>&1 9>&2 1>/dev/null 2>/dev/null) )
+    if [[ $? != 0 ]]; then
+        unset COMPREPLY
+    fi
+}
+complete -o nospace -o default -F _python_argcomplete "pdc"

requirements/devel.txt

@@ -2,3 +2,4 @@
 mock
 flake8
 coverage
+argcomplete