变量替换

Visual Studio Code在调试和任务配置文件以及某些选择设置中支持变量替换。使用$ {variableName}语法在launch.json和task.json文件的键和值字符串内部支持变量替换。

预定义变量

• ${workspaceFolder} - 在VS Code中打开的文件夹的路径
• ${workspaceFolderBasename} - VS Code中打开的文件夹名称，不带任何斜杠（/）
• ${file} - 当前打开的文件
• ${relativeFile} - 当前打开的相对于workspaceFolder的文件
• ${relativeFileDirname} - 当前打开文件的目录名（相对于workspaceFolder）
• ${fileBasename} - 当前打开的文件的基本名称
• ${fileBasenameNoExtension} - 当前打开的文件基本名称，不带文件扩展名
• ${fileDirname} - 当前打开的文件的目录名
• ${fileExtname} - 当前打开文件的扩展名
• ${cwd} - 启动时任务运行程序的当前工作目录
• ${lineNumber} - 活动文件中当前选择的行号
• ${selectedText} - 活动文件中当前选定的文本
• ${execPath} - VS Code可执行文件的路径
• ${defaultBuildTask} - 默认构建任务的名称

例如:

Supposing that you have the following requirements:

1. A file located at /home/your-username/your-project/folder/file.ext opened in your editor;
2. The directory /home/your-username/your-project opened as your root workspace.

So you will have the following values for each variable:

• ${workspaceFolder} - /home/your-username/your-project
• ${workspaceFolderBasename} - your-project
• ${file} - /home/your-username/your-project/folder/file.ext
• ${relativeFile} - folder/file.ext
• ${relativeFileDirname} - folder
• ${fileBasename} - file.ext
• ${fileBasenameNoExtension} - file
• ${fileDirname} - /home/your-username/your-project/folder
• ${fileExtname} - .ext
• ${lineNumber} - line number of the cursor
• ${selectedText} - text selected in your code editor
• ${execPath} - location of Code.exe