CP-1122 Bash completions

README.md

@@ -95,6 +95,26 @@ Add the following to your bash or zsh profile for convenience:
 alias ddev='pub run dart_dev'
 ```
 
+#### Bash Completion
+
+Symlink or copy the file `tool/ddev-completion.sh` into
+`/etc/bash_completion.d/` (or wherever your completion scripts live, if you
+have installed Bash through Homebrew on a Mac, for instance, this will be
+`/usr/local/etc/bash_completion.d/`).
+
+If you are using Bash installed through Homebrew, you'll also need to install
+the completion machinery with `brew install bash-completion`. Then make sure
+something like the following is in your `.bashrc` file:
+
+```
+if [ -f $(brew --prefix)/etc/bash_completion ]; then
+  . $(brew --prefix)/etc/bash_completion
+fi
+```
+
+Next time you load a Bash session you'll have basic completions for the `ddev`
+alias described above.
+
 #### Configuration
 In order to configure `dart_dev` for a specific project, run `ddev init` or
 `pub run dart_dev init` to generate the configuration file. This should create a

tool/ddev-completion.sh

@@ -0,0 +1,43 @@
+_ddev()
+{
+    local cur prev cmds
+
+    COMPREPLY=()
+
+    cur="${COMP_WORDS[COMP_CWORD]}"
+    prev="${COMP_WORDS[COMP_CWORD-1]}"
+    cmds="--help --quiet --version --color --no-color analyze copy-license coverage docs examples format init test"
+
+    #
+    # Complete subcommand options instead of top-level commands and options.
+    #
+
+    if [[ " ${COMP_WORDS[*]} " == *" analyze "* ]]; then
+        cmds="--help --fatal-warnings --no-fatal-warnings --hints --no-hints"
+    fi
+
+    if [[ " ${COMP_WORDS[*]} " == *" coverage "* ]]; then
+        cmds="--help --unit --no-unit --integration --no-integration --html --no-html --open --no-open"
+    fi
+
+    if [[ " ${COMP_WORDS[*]} " == *" docs "* ]]; then
+        cmds="--help --open --no-open"
+    fi
+
+    if [[ " ${COMP_WORDS[*]} " == *" examples "* ]]; then
+        cmds="--help --hostname --port"
+    fi
+
+    if [[ " ${COMP_WORDS[*]} " == *" format "* ]]; then
+        cmds="--help --check --line-length"
+    fi
+
+    if [[ " ${COMP_WORDS[*]} " == *" test "* ]]; then
+        cmds="--help --unit --no-unit --integration --no-integration --concurrency --platform"
+    fi
+
+    COMPREPLY=($(compgen -W "${cmds}" -- ${cur}))  
+    return 0
+}
+complete -F _ddev ddev
+