bash completion support

Author: Linus Wallgren

README.md

@@ -29,6 +29,18 @@ curl https://cdn.rawgit.com/pimterry/notes/v0.1.2/notes > /usr/local/bin/notes &
 
 By default your notes live in ~/notes, but you can change that to anywhere you like by setting the `$NOTES_DIRECTORY` environmental variable.
 
+### Bash completion
+
+If you want bash autocompletion copy the completion script into the bash completion directory. The bash completion directory is `/usr/share/bash-completion/completions/` on a typical debian jessie install, you can you can get the bash completion directory by running the following command:
+
+    pkg-config --variable=completionsdir bash-completion
+
+Installing the completions might be as follows:
+
+```bash
+curl https://cdn.rawgit.com/pimterry/notes/v0.1.1/notes.bash_completion > /usr/share/bash-completion/completions/notes
+```
+
 ## How do I use it?
 
 ### `notes new <note-name>`
@@ -62,8 +74,8 @@ All the above works. Here's what's coming next:
 - [ ] Combining find and grep, to match either one
 - [ ] More interesting and nicer looking file/grep search result formatting (...only when not piping?)
 - [ ] Make the file extension optional
-- [ ] Bash/zsh command autocompletion
-- [ ] Bash/zsh note name autocompletion
+- [ ] zsh command autocompletion
+- [ ] zsh note name autocompletion
 - [ ] Interactive mode? `notes` could open a scrollable list of notes, open your editor when you pick one, and reappear after you close it.
 - [ ] Tree view.
 - [ ] Easy way to see short notes snippets in find/grep/tree? Could be option (`--snippets`) or by piping to a command (`notes find | notes snippets`). Maybe call it `head`?

notes.bash_completion

@@ -0,0 +1,43 @@
+#!/bin/bash
+
+_notes_complete_notes() {
+    local configured_dir=${NOTES_DIRECTORY%/} # Remove trailing slashes
+    local notes_dir="${configured_dir:-$HOME/notes}"
+    local items=($(compgen -f "$notes_dir/$1"))
+    for item in "${items[@]}"; do
+        [[ -d $item ]] && item="$item/"
+        local filename=${item#$notes_dir/}
+        COMPREPLY+=("${filename%.md}")
+    done
+}
+
+_notes()
+{
+    local cur
+    readonly commands="new find grep open"
+
+    COMPREPLY=()   # Array variable storing the possible completions.
+    cur=${COMP_WORDS[COMP_CWORD]}
+
+    if [[ $COMP_CWORD -gt 1 ]]; then
+        case "${COMP_WORDS[1]}" in
+            new)
+                _notes_complete_notes "$cur"
+                ;;
+            find)
+                _notes_complete_notes "$cur"
+                ;;
+            grep)
+                ;;
+            open)
+                _notes_complete_notes "$cur"
+                ;;
+        esac
+    else
+        compopt +o nospace
+        COMPREPLY=($(compgen -W "${commands}" -- "${cur}"))
+    fi
+    return 0
+}
+
+complete -o filenames -o nospace -F _notes notes