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Standalone tree view file explorer, inspired by fzf.

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twf - Tree View Find

twf is a standalone tree view explorer inspired by fzf.

Features

  • Standalone, usable from vim, the shell or any other program.
  • Locate files through external programs such as fzf.
  • Customizable previews.
  • Optional inline display in the shell.

Installation

Using Homebrew

brew install --HEAD wvanlint/twf/twf

Using Go

Install Go, and ensure that $GOPATH/bin is added to the $PATH.

export GOPATH="$HOME/go"
export PATH="$PATH:$HOME/bin:$GOPATH/bin"

Install the Go binary.

go get -u github.com/wvanlint/twf/cmd/twf

Integrations

In .zshrc

twf-widget() {
  local selected=$(twf --height=0.5)
  BUFFER="$BUFFER$selected"
  zle reset-prompt
  zle end-of-line
  return $ret
}
zle -N twf-widget
bindkey '^T' twf-widget

In .vimrc

function! Twf()
  let temp = tempname()
  execute 'silent ! twf ' . @% . ' > ' . temp
  redraw!
  try
    let out = filereadable(temp) ? readfile(temp) : []
  finally
    silent! call delete(temp)
  endtry
  if !empty(out)
    execute 'edit! ' . out[0]
  endif
endfunction

nnoremap <silent> <Space>t :call Twf()<CR>

In .config/nvim/init.vim

function! TwfExit(path)
  function! TwfExitClosure(job_id, data, event) closure
    bd!
    try
      let out = filereadable(a:path) ? readfile(a:path) : []
    finally
      silent! call delete(a:path)
    endtry
    if !empty(out)
      execute 'edit! ' . out[0]
    endif
  endfunction
  return funcref('TwfExitClosure')
endfunction

function! Twf()
  let temp = tempname()
  call termopen('twf ' . @% . ' > ' . temp, { 'on_exit': TwfExit(temp) })
  startinsert
endfunction

nnoremap <silent> <Space>t :call Twf()<CR>

Usage

twf [flags...] [path]

The binary twf will output the path that you select in the tree view, so it is usable in scripts and from other programs. For example, you can try the following commands:

cat $(twf)
cat $(twf --height=0.5)
vim $(twf)

It is also possible to locate and highlight a file given as an argument.

twf path/to/subdir/file

Default keybindings

  • j: Move down.
  • k: Move up.
  • ctrl-j: Move preview down.
  • ctrl-k: Move preview up.
  • p: Move to parent.
  • P: Move to parent and collapse.
  • o: Expand/collapse directory.
  • O: Recursively expand/collapse directory.
  • Enter: Select file and exit.
  • /: Use an external program (fzf by default) to find a file and highlight it in the tree.

Flags

  • -autoexpandDepth <depth>: Depth to which directories should be automatically expanded at startup. If -1, depth is unlimited. The default is 1, meaning only the root should be expanded.

  • -autoexpandIgnore <regexp>: Regular expression matching paths to ignore when auto-expanding directories at startup. Each path that's tested against the regex is relative to the twf root and does not begin with / or ./, e.g. foo/bar/qux.

    For example, ^(\.git|internal/filetree/testdata)$ would ignore the .git directory at the root level as well as the internal/filetree/testdata directory.

  • -bind <keybindings>: Keybindings for command sequences.

    This takes the following format:

    <keybindings> = <key>::<commands>[,<keybindings>]
    <key>         = "ctrl-a" | "a" | "esc" | ...
    <commands>    = <command>[;<command>]...
    <command>     = "tree:open" | "quit" | ...
    

    For example: k::tree:prev,j::tree:next,enter::tree:selectPath;quit. See below for the possible keys and commands.

  • -dir <dir>: Root directory to browse.

  • -graphics <graphicMappings>: Graphics per type of text span.

    This takes the following format:

    <graphicMappings> = <graphicMapping>[,<graphicMappings>]
    <graphicsMapping> = <span>::<graphics>
    <span>            = tree:cursor | tree:dir
    <graphics>        = <graphic>[,<graphics>]
    <graphic>         = reverse | bold
    <graphic>         = fg#<color> | bg#<color>
    <color>           = black | red | green | yellow | blue | magenta | cyan | white | brightred | ...
    <color>           = 0-255
    <color>           = <R><G><B>  # In hexadecimal
    
  • -height <float>: Proportion (between 0.0 and 1.0) of the vertical space of the terminal to take up. If equal to 1.0, an alternative buffer will be used.

  • -locateCmd <str>: The command whose output will be interpreted as a path to locate in the file tree, when called via the '/' key binding.

  • -loglevel <level>: Logging priority. Empty disables logging. Follows the notation here.

  • -preview <bool>: Enable/disable previews.

  • -previewCmd <str>: Command to create preview of a file. The sequence {} serves as a placeholder for the path to preview.

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Standalone tree view file explorer, inspired by fzf.

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