feat(sigstore): add completion plugin

Closes #10862

Signed-off-by: Marco Franssen <marco.franssen@gmail.com>
Co-authored-by: Carlo Sala <carlosalag@protonmail.com>

lib/git.zsh

@@ -19,6 +19,7 @@ function git_prompt_info() {
 
   local ref
   ref=$(__git_prompt_git symbolic-ref --short HEAD 2> /dev/null) \
+  || ref=$(__git_prompt_git describe --tags --exact-match HEAD 2> /dev/null) \
   || ref=$(__git_prompt_git rev-parse --short HEAD 2> /dev/null) \
   || return 0
 

plugins/hasura/README.md

@@ -0,0 +1,9 @@
+# Hasura plugin
+
+This plugin adds completion for [the Hasura CLI](https://hasura.io/docs/latest/hasura-cli/index/).
+
+To use it, add `hasura` to the plugins array in your zshrc file:
+
+```zsh
+plugins=(... hasura)
+```

plugins/hasura/hasura.plugin.zsh

@@ -0,0 +1,13 @@
+if (( ! $+commands[hasura] )); then
+  return
+fi
+
+# If the completion file does not exist, generate it and then source it
+# Otherwise, source it and regenerate in the background
+if [[ ! -f "$ZSH_CACHE_DIR/completions/_hasura" ]]; then
+  hasura completion zsh --file "$ZSH_CACHE_DIR/completions/_hasura" >/dev/null
+  source "$ZSH_CACHE_DIR/completions/_hasura"
+else
+  source "$ZSH_CACHE_DIR/completions/_hasura"
+  hasura completion zsh --file "$ZSH_CACHE_DIR/completions/_hasura" >/dev/null &|
+fi

plugins/sigstore/README.md

@@ -0,0 +1,13 @@
+# Sigstore plugin
+
+This plugin sets up completion for the following [Sigstore](https://sigstore.dev/) CLI tools.
+
+- [Cosign](https://docs.sigstore.dev/cosign/overview)
+- [Sget](https://docs.sigstore.dev/cosign/installation#alpine-linux)
+- [Rekor](https://docs.sigstore.dev/rekor/overview)
+
+To use it, add `sigstore` to the plugins array in your zshrc file:
+
+```zsh
+plugins=(... sigstore)
+```

plugins/sigstore/sigstore.plugin.zsh

@@ -0,0 +1,22 @@
+function install_autocompletion {
+  if (( ! $+commands[$1] )); then
+    return
+  fi
+
+  # If the completion file doesn't exist yet, we need to autoload it and
+  # bind it to `$1` (cosign, sget, rekor-cli). Otherwise, compinit will
+  # have already done that
+  if [[ ! -f "$ZSH_CACHE_DIR/completions/_$1" ]]; then
+    autoload -Uz _$1
+    typeset -g -A _comps
+    _comps[$1]=_$1
+  fi
+
+  $1 completion zsh >| "$ZSH_CACHE_DIR/completions/_$1" &|
+}
+
+install_autocompletion cosign
+install_autocompletion sget
+install_autocompletion rekor-cli
+
+unfunction install_autocompletion