From 586ec24a48202ea23b82349b9c241e367313818e Mon Sep 17 00:00:00 2001
From: Steve Durrheimer <s.durrheimer@gmail.com>
Date: Fri, 29 Apr 2016 22:04:50 +0200
Subject: [PATCH] Add zsh completion for 'docker network ls -f {id,name,type}'

Signed-off-by: Steve Durrheimer <s.durrheimer@gmail.com>
---
 contrib/completion/zsh/_docker | 81 ++++++++++++++++++++++++++++------
 1 file changed, 68 insertions(+), 13 deletions(-)

diff --git a/contrib/completion/zsh/_docker b/contrib/completion/zsh/_docker
index d90a9d65..5d128293 100644
--- a/contrib/completion/zsh/_docker
+++ b/contrib/completion/zsh/_docker
@@ -311,11 +311,42 @@ __docker_complete_ps_filters() {
     return ret
 }
 
-__docker_networks() {
+__docker_network_complete_ls_filters() {
     [[ $PREFIX = -* ]] && return 1
     integer ret=1
+
+    if compset -P '*='; then
+        case "${${words[-1]%=*}#*=}" in
+            (id)
+                __docker_networks_ids && ret=0
+                ;;
+            (name)
+                __docker_networks_names && ret=0
+                ;;
+            (type)
+                type_opts=('builtin' 'custom')
+                _describe -t type-filter-opts "Type Filter Options" type_opts && ret=0
+                ;;
+            *)
+                _message 'value' && ret=0
+                ;;
+        esac
+    else
+        opts=('id' 'name' 'type')
+        _describe -t filter-opts "Filter Options" opts -qS "=" && ret=0
+    fi
+
+    return ret
+}
+
+__docker_get_networks() {
+    [[ $PREFIX = -* ]] && return 1
+    integer ret=1
+    local line s
     declare -a lines networks
 
+    type=$1; shift
+
     lines=(${(f)"$(_call_program commands docker $docker_options network ls)"})
 
     # Parse header line to find columns
@@ -332,24 +363,42 @@ __docker_networks() {
     lines=(${lines[2,-1]})
 
     # Network ID
-    local line s
-    for line in $lines; do
-        s="${line[${begin[NETWORK ID]},${end[NETWORK ID]}]%% ##}"
-        s="$s:${(l:7:: :::)${${line[${begin[DRIVER]},${end[DRIVER]}]}%% ##}}"
-        networks=($networks $s)
-    done
+    if [[ $type = (ids|all) ]]; then
+        for line in $lines; do
+            s="${line[${begin[NETWORK ID]},${end[NETWORK ID]}]%% ##}"
+            s="$s:${(l:7:: :::)${${line[${begin[DRIVER]},${end[DRIVER]}]}%% ##}}"
+            networks=($networks $s)
+        done
+    fi
 
     # Names
-    for line in $lines; do
-        s="${line[${begin[NAME]},${end[NAME]}]%% ##}"
-        s="$s:${(l:7:: :::)${${line[${begin[DRIVER]},${end[DRIVER]}]}%% ##}}"
-        networks=($networks $s)
-    done
+    if [[ $type = (names|all) ]]; then
+        for line in $lines; do
+            s="${line[${begin[NAME]},${end[NAME]}]%% ##}"
+            s="$s:${(l:7:: :::)${${line[${begin[DRIVER]},${end[DRIVER]}]}%% ##}}"
+            networks=($networks $s)
+        done
+    fi
 
-    _describe -t networks-list "networks" networks && ret=0
+    _describe -t networks-list "networks" networks "$@" && ret=0
     return ret
 }
 
+__docker_networks() {
+    [[ $PREFIX = -* ]] && return 1
+    __docker_get_networks all "$@"
+}
+
+__docker_networks_ids() {
+    [[ $PREFIX = -* ]] && return 1
+    __docker_get_networks ids "$@"
+}
+
+__docker_networks_names() {
+    [[ $PREFIX = -* ]] && return 1
+    __docker_get_networks names "$@"
+}
+
 __docker_network_commands() {
     local -a _docker_network_subcommands
     _docker_network_subcommands=(
@@ -423,7 +472,13 @@ __docker_network_subcommand() {
             _arguments $(__docker_arguments) \
                 $opts_help \
                 "($help)--no-trunc[Do not truncate the output]" \
+                "($help)*"{-f=,--filter=}"[Provide filter values]:filter:->filter-options" \
                 "($help -q --quiet)"{-q,--quiet}"[Only display numeric IDs]" && ret=0
+            case $state in
+                (filter-options)
+                    __docker_network_complete_ls_filters && ret=0
+                    ;;
+            esac
             ;;
         (rm)
             _arguments $(__docker_arguments) \