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fish/functions/__kube_prompt.fish

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+# Inspired from:
+# https://github.com/jonmosco/kube-ps1
+# https://github.com/Ladicle/fish-kubectl-prompt
+
+function __kube_ps_update_cache
+  function __kube_ps_cache_context
+    set -l ctx (kubectl config current-context 2>/dev/null)
+    if test $status -eq 0
+      set -g __kube_ps_context "$ctx"
+    else
+      set -g __kube_ps_context "n/a"
+    end
+  end
+
+  function __kube_ps_cache_namespace
+    set -l ns (kubectl config view --minify -o 'jsonpath={..namespace}' 2>/dev/null)
+    if test -n "$ns"
+      set -g __kube_ps_namespace "$ns"
+    else
+      set -g __kube_ps_namespace "default"
+    end
+  end
+
+  function __stat_mtime
+    #-- cross-platform workaround; POSIX didn't specify stat(1) and so
+    #-- its interface is incompatibly different on Mac OS and Linux.
+    #-- see https://unix.stackexchange.com/q/561927/3097
+    python -c "print(__import__('os').stat(__import__('sys').argv[1]).st_mtime)" $argv
+  end
+
+  set -l kubeconfig "$KUBECONFIG"
+  if test -z "$kubeconfig"
+    set kubeconfig "$HOME/.kube/config"
+  end
+
+  if test "$kubeconfig" != "$__kube_ps_kubeconfig"
+    __kube_ps_cache_context
+    __kube_ps_cache_namespace
+    set -g __kube_ps_kubeconfig "$kubeconfig"
+    set -g __kube_ps_timestamp (date +%s)
+    return
+  end
+
+  for conf in (string split ':' "$kubeconfig")
+    if test -r "$conf"
+      if test -z "$__kube_ps_timestamp"; or test (__stat_mtime "$conf") -gt "$__kube_ps_timestamp"
+        __kube_ps_cache_context
+        __kube_ps_cache_namespace
+        set -g __kube_ps_kubeconfig "$kubeconfig"
+        set -g __kube_ps_timestamp (date +%s)
+        return
+      end
+    end
+  end
+end
+
+function __kube_prompt
+  if test -z "$__kube_ps_enabled"; or test $__kube_ps_enabled -ne 1
+    return
+  end
+
+  __kube_ps_update_cache
+  echo -n -s " (⎈ $__kube_ps_context|$__kube_ps_namespace)"
+end

fish/functions/kube_ps.fish

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+function kube_ps -a toggle
+  if test "$toggle" = "on"
+    set -U __kube_ps_enabled 1
+    return
+  end
+
+  if test "$toggle" = "off"
+    set -U __kube_ps_enabled 0
+    return
+  end
+end
+
+function dcleanup
+    docker rm -v $(docker ps --filter status=exited -q 2>/dev/null) 2>/dev/null
+    docker rmi $(docker images --filter dangling=true -q 2>/dev/null) 2>/dev/null
+    return
+  end
+
+