bash 如何在zenity中获取不同形式的值
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how to get the values of different forms in zenity
提问by user573014
I want to get the values of the form in zenity (Ipaddress value written by user) in order to do some video streaming with ffmpeg, I tried several examples such as lists, forms, .. etc
我想在 zenity 中获取表单的值（用户编写的 Ipaddress 值）以便使用 ffmpeg 进行一些视频流，我尝试了几个示例，例如列表、表单等
zenity --forms --title="Add Friend" --text="Enter Multicast address" --separator="," --add-entry="IP address" --add-entry="PORT"
OR
或者
if zenity --list --title="Record Video Stream" --text "Enter the Multicast IP address and port of each of the video stream" --column "Video IP" --print-column=2 --multiple --column "PORT" --editable ip="0.0.0.0" port="2002"
回答by Petesh
The output from zenityis the text that was inputted, separated by the --separatorcharacter. The exit code is if it was accepted or not (i.e. OK, Cancelselected).
输出来自zenity输入的文本，由--separator字符分隔。退出代码是它是否被接受（即OK，Cancel被选中）。
So for example (in bash):
例如（在 bash 中）：
OUTPUT=$(zenity --forms --title="Add Friend" --text="Enter Multicast address" --separator="," --add-entry="IP address" --add-entry="PORT")
accepted=$?
if ((accepted != 0)); then
echo "something went wrong"
exit 1
fi
ip=$(awk -F, '{print }' <<<$OUTPUT)
port=$(awk -F, '{print }' <<<$OUTPUT)
That gets you the ip address from zenity into the ip variable and the port from the zenity form into the port variable.
这使您将 zenity 的 ip 地址转换为 ip 变量，并将 zenity 形式的端口转换为 port 变量。
The second example is a little more complex, it's using the 'editable' template, which means that you don't get any output if the data is unchanged, but it follows a similar pattern to the previous example. Now, because you said --print-column=, it only displays that column in the output. Unfortunately, --listis for the selection of one or more rows from a list of items. Editing multiple rows will work, but you haveto select every one of the rows to get the output from that row, even after making a change to the data. In this case, because you didn't specify the --separatoroption, the default separator is used |.
第二个示例稍微复杂一些，它使用“可编辑”模板，这意味着如果数据未更改，您将不会获得任何输出，但它遵循与前一个示例类似的模式。现在，因为你说--print-column=，它只在输出中显示该列。不幸的是，--list用于从项目列表中选择一行或多行。编辑多行会起作用，但您必须选择每一行才能从该行获取输出，即使在对数据进行更改之后也是如此。在这种情况下，因为您没有指定--separator选项，所以使用默认分隔符|。
In the second case, using editable and list inputs isn't really what a list is designed to do from a user input perspective.
在第二种情况下，从用户输入的角度来看，使用可编辑和列表输入并不是列表的真正目的。
