zsh 完成虚拟路径 [英] zsh completion with virtual path
问题描述
我想为一个带有虚拟文件树的工具创建一个 zsh 补全.例如我的文件树如下所示:
I want to create a zsh completion for a tool with a virtual file tree. e.g. my file tree looks like the following:
/
|- foo/
| |- bar
| |- baz/
| |- qux
|- foobar
我的工具 mycmd
有一个列出当前目录的子命令:
My tool mycmd
has a subcommand for listing the current directory:
$ mycmd ls
foo/
foobar
$ mycmd ls foo/
bar
baz/
我实际的 zsh 完成看起来是这样的:
My actual zsh completion looks like this:
_mycmd_ls() {
if [ ! -z "$words[-1]" ]; then
dir=$(dirname /$words[-1])
lastpart=$(basename $words[-1])
items=$(mycmd ls $dir | grep "^$lastpart")
else
items=$(mycmd ls)
fi
_values -s ' ' 'items' ${(uozf)items}
}
_mycmd() {
local -a commands
commands=(
'ls:list items in directory'
)
_arguments -C -s -S -n \
'(- 1 *)'{-v,--version}"[Show program\'s version number and exit]: :->full" \
'(- 1 *)'{-h,--help}'[Show help message and exit]: :->full' \
'1:cmd:->cmds' \
'*:: :->args' \
case "$state" in
(cmds)
_describe -t commands 'commands' commands
;;
(args)
_mycmd_ls
;;
(*)
;;
esac
}
_mycmd
恕我直言是 _values
错误的实用功能.实际行为是:
IMHO is _values
the wrong utility function. The actual behaviour is:
$ mycmd ls<TAB>
foo/ foobar
$ mycmd ls foo/<TAB> ## <- it inserts automatically a space before <TAB> and so $words[-1] = ""
foo/ foobar
我不能使用实用函数 _files
或 _path_files
因为文件树只是虚拟的.
I can't use the utility function _files
or _path_files
because the file tree is only virtual.
推荐答案
我建议使用 compadd
而不是 _values
来控制附加的后缀字符.然后查看可用的选项,设置一个空的后缀字符,以防虚拟目录是结果的一部分:
I would suggest to make use of compadd
rather _values
to get in control of the suffix character appended. Then looking at the available choices, set an empty suffix character in case a virtual directory is part of the result:
_mycmd_ls() {
if [ ! -z "$words[-1]" ]; then
dir=$(dirname /$words[-1])
lastpart=$(basename $words[-1])
items=$(mycmd ls $dir | grep "^$lastpart")
else
items=$(mycmd ls)
fi
local suffix=' ';
# do not append space to word completed if it is a directory (ends with /)
for val in $items; do
if [ "${val: -1:1}" = '/' ]; then
suffix=''
break
fi
done
compadd -S "$suffix" -a items
}
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