Path 示例
不同 Path 实例的属性信息展示
打印 Path 实例的目录部分、文件全名(有扩展名)、扩展名、文件名(无扩展名),并判断 Path 实例是绝对路径还是相对路径
代码如下:
import std.fs.Path
main() {
let pathStrArr: Array<String> = [
// 绝对路径
"/a/b/c",
"/a/b/",
"/a/b/c.cj",
"/a",
"/",
// 相对路径
"./a/b/c",
"./a/b/",
"./a/b/c.cj",
"./",
".",
"123."
]
for (i in 0..pathStrArr.size) {
let path: Path = Path(pathStrArr[i])
// 打印 path 的整个路径字符串
println("Path${i}: ${path.toString()}")
// 打印 path 的目录路径
println("Path.parent: ${path.parent}")
// 打印 path 的文件全名(有扩展名)
println("Path.fileName: ${path.fileName}")
// 打印 path 的扩展名
println("Path.extensionName: ${path.extensionName}")
// 打印 path 的文件名(无扩展名)
println("Path.fileNameWithoutExtension: ${path.fileNameWithoutExtension}")
// 打印 path 是否是绝对路径、相对路径
println("Path.isAbsolute: ${path.isAbsolute()}; Path.isRelative: ${path.isRelative()}")
println()
}
return 0
}
运行结果如下:
Path0: /a/b/c
Path.parent: /a/b
Path.fileName: c
Path.extensionName:
Path.fileNameWithoutExtension: c
Path.isAbsolute: true; Path.isRelative: false
Path1: /a/b/
Path.parent: /a
Path.fileName: b
Path.extensionName:
Path.fileNameWithoutExtension: b
Path.isAbsolute: true; Path.isRelative: false
Path2: /a/b/c.cj
Path.parent: /a/b
Path.fileName: c.cj
Path.extensionName: cj
Path.fileNameWithoutExtension: c
Path.isAbsolute: true; Path.isRelative: false
Path3: /a
Path.parent: /
Path.fileName: a
Path.extensionName:
Path.fileNameWithoutExtension: a
Path.isAbsolute: true; Path.isRelative: false
Path4: /
Path.parent: /
Path.fileName:
Path.extensionName:
Path.fileNameWithoutExtension:
Path.isAbsolute: true; Path.isRelative: false
Path5: ./a/b/c
Path.parent: ./a/b
Path.fileName: c
Path.extensionName:
Path.fileNameWithoutExtension: c
Path.isAbsolute: false; Path.isRelative: true
Path6: ./a/b/
Path.parent: ./a
Path.fileName: b
Path.extensionName:
Path.fileNameWithoutExtension: b
Path.isAbsolute: false; Path.isRelative: true
Path7: ./a/b/c.cj
Path.parent: ./a/b
Path.fileName: c.cj
Path.extensionName: cj
Path.fileNameWithoutExtension: c
Path.isAbsolute: false; Path.isRelative: true
Path8: ./
Path.parent:
Path.fileName: .
Path.extensionName:
Path.fileNameWithoutExtension:
Path.isAbsolute: false; Path.isRelative: true
Path9: .
Path.parent:
Path.fileName: .
Path.extensionName:
Path.fileNameWithoutExtension:
Path.isAbsolute: false; Path.isRelative: true
Path10: 123.
Path.parent:
Path.fileName: 123.
Path.extensionName:
Path.fileNameWithoutExtension: 123
Path.isAbsolute: false; Path.isRelative: true
Path 的拼接、判等、转规范化路径等操作
代码如下:
import std.fs.*
main() {
let dirPath: Path = Path("./a/b/c")
if (!exists(dirPath)) {
Directory.create(dirPath, recursive: true)
}
let filePath: Path = dirPath.join("d.cj") // ./a/b/c/d.cj
if (filePath == Path("./a/b/c/d.cj")) {
println("filePath.join: success")
}
if (!exists(filePath)) {
File.create(filePath).close()
}
let curNormalizedPath: Path = canonicalize(Path("."))
let fileNormalizedPath: Path = canonicalize(Path("././././a/./../a/b/../../a/b/c/.././../../a/b/c/d.cj"))
if (fileNormalizedPath == canonicalize(filePath) &&
fileNormalizedPath.toString() == curNormalizedPath.toString() + "/a/b/c/d.cj") {
println("canonicalize filePath: success")
}
remove(dirPath, recursive: true)
return 0
}
运行结果如下:
filePath.join: success
canonicalize filePath: success
通过 Path 创建文件和目录
代码如下:
import std.fs.*
main() {
let curPath: Path = Path("./")
let dirPath: Path = curPath.join("tempDir")
let filePath: Path = dirPath.join("tempFile.txt")
if (exists(dirPath)) {
remove(dirPath, recursive: true)
}
Directory.create(dirPath)
if (exists(dirPath)) {
println("Directory 'tempDir' is created successfully.")
}
File.create(filePath).close()
if (exists(filePath)) {
println("File 'tempFile.txt' is created successfully in directory 'tempDir'.")
}
remove(dirPath, recursive: true)
return 0
}
运行结果如下:
Directory 'tempDir' is created successfully.
File 'tempFile.txt' is created successfully in directory 'tempDir'.