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#autoload

# Usage: _urls [-f]
# Options:
#  -f : complete files.
#
# Configuration keys used:
#
#  urls_path
#    The path to a directory containing a URL database, such as:
#
#      % cd ~/.zsh/urls
#      % find . -ls
#      ... drwxr-xr-x ... 512 Sep  3 02:46 .
#      ... drwxr-xr-x ... 512 Sep  3 02:48 ./http
#      ... drwxr-xr-x ... 512 Sep  3 02:52 ./http/www.zsh.org
#      ... drwxr-xr-x ... 512 Sep  3 03:01 ./http/www.zsh.org/mla
#      ... drwxr-xr-x ... 512 Sep  3 03:01 ./http/www.zsh.org/mla/workers
#      ... drwxr-xr-x ... 512 Sep  3 03:01 ./http/www.zsh.org/mla/workers/1999
#      ... -rw-r--r-- ...   0 Sep  3 03:01 ./http/www.zsh.org/mla/workers/1999/index.html
#      ... drwxr-xr-x ... 512 Sep  3 02:48 ./http/sunsite.auc.dk
#      ... drwxr-xr-x ... 512 Sep  3 02:48 ./http/sunsite.auc.dk/zsh
#      ... drwxr-xr-x ... 512 Sep  3 02:47 ./bookmark
#      ... drwxr-xr-x ... 512 Sep  3 02:48 ./bookmark/zsh
#      ... -rw-r--r-- ...  27 Sep  3 02:47 ./bookmark/zsh/home
#      ... -rw-r--r-- ...  20 Sep  3 02:48 ./bookmark/zsh/meta
#      % cat bookmark/zsh/home 
#      http://sunsite.auc.dk/zsh/
#      % cat bookmark/zsh/meta
#      http://www.zsh.org/
#
#  urls_localhttp
#    Specify a local web server in the form:
#      hostname:doc root:user area
#    where hostname is the name of the web server, doc root is the path to
#    the default web pages for the server and user area is the directory
#    name used by a user placing web pages within their home area.
#    e.g. compconf urls_localhttp=www:/usr/local/apache/htdocs:public_html

local ipre scheme host user dirs files ret=1

if [[ "$1" = -f ]]; then
  shift
  _files "$@" && return
fi

if [[ -z "$compconfig[urls_path]" ]]; then
  compconfig[urls_path]=${ZDOTDIR:-$HOME}/.zsh/urls
fi

ipre="$IPREFIX"

if [[ -prefix [-+.a-z0-9]#: ]]; then
  scheme="${PREFIX%%:*}"
  compset -P "[-+.a-z0-9]#:"
else
  [ -d $compconfig[urls_path]/bookmark ] &&
      compadd "$@" -S '' bookmark: && ret=0
  compadd "$@" -S '' file: ftp:// gopher:// http:// && ret=0
  return $ret
fi

case "$scheme" in
  http|ftp|gopher) compset -P // || { compadd "$@" -S '' //; return };;
  file)
    if ! compset -P //; then
      if [ -prefix / ]; then
	_files "$@"
	return
      elif [ ! "$PREFIX" ]; then
	compadd -S '/' - "${PWD%/}"
	return
      fi
    fi
  ;;
  bookmark)
    if [[ -f "$compconfig[urls_path]/$scheme/$PREFIX$SUFFIX" &&
        -s "$compconfig[urls_path]/$scheme/$PREFIX$SUFFIX" ]]; then
      compadd "$@" -QU -- \
          "$ipre$(<"$compconfig[urls_path]/$scheme/$PREFIX$SUFFIX")"
    else
      compadd "$@" -Q -S '/' - \
          $compconfig[urls_path]/$scheme/$PREFIX*$SUFFIX(/:t) && ret=0
      compadd "$@" -QS '' - \
          $compconfig[urls_path]/$scheme/$PREFIX*$SUFFIX(.:t) || return $ret
    fi
    return 
  ;;
esac

if [[ -prefix */* ]]; then

  # Complete part after hostname
  host=${PREFIX%%/*}
  compset -P "$host/"
  if [[ "$compconfig[urls_localhttp]" = ${host}:* ]]; then
    if [[ -prefix \~ ]]; then
      compset -P \~
      if [[ -prefix */* ]]; then
        user=${PREFIX%%/*}
	compset -P $user/
	_path_files -W ~$user/${${(s.:.)compconfig[urls_localhttp]}[3]}/
      else
        _users -S/
      fi
    else
      _path_files -W ${${(s.:.)compconfig[urls_localhttp]}[2]}
    fi
  else
    _path_files -W $compconfig[urls_path]/$scheme/$host/
  fi
else

  # Complete hosts
  dirs=($compconfig[urls_path]/$scheme/$PREFIX*$SUFFIX(/:t))
  (( $#dirs )) || _hosts -S/ && ret=0
  [ "$scheme" = "http" ] && 
      dirs=($dirs ${${(s.:.)compconfig[urls_localhttp]}[1]})
  compadd "$@" -Q -S '/' - $dirs || return $ret
fi