81 lines
3.0 KiB
Swift
Executable File
81 lines
3.0 KiB
Swift
Executable File
#!/usr/bin/swift
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import Foundation
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struct SwiftErr: TextOutputStream {
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public static var stream = SwiftErr()
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mutating func write(_ string: String) {
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fputs(string, stderr)
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}
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}
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guard CommandLine.arguments.count >= 3 else {
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print("Usage: swift copy-xattrs.swift <source> <dest>")
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exit(2)
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}
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CommandLine.arguments[2].withCString { destinationPath in
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let destinationNamesLength = listxattr(destinationPath, nil, 0, 0)
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if destinationNamesLength == -1 {
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print("listxattr for destination failed: \(errno)", to: &SwiftErr.stream)
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exit(1)
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}
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let destinationNamesBuffer = UnsafeMutablePointer<Int8>.allocate(capacity: destinationNamesLength)
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if listxattr(destinationPath, destinationNamesBuffer, destinationNamesLength, 0) != destinationNamesLength {
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print("Attributes changed during system call", to: &SwiftErr.stream)
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exit(1)
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}
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var destinationNamesIndex = 0
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while destinationNamesIndex < destinationNamesLength {
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let attribute = destinationNamesBuffer + destinationNamesIndex
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if removexattr(destinationPath, attribute, 0) != 0 {
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print("removexattr for \(String(cString: attribute)) failed: \(errno)", to: &SwiftErr.stream)
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exit(1)
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}
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destinationNamesIndex += strlen(attribute) + 1
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}
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destinationNamesBuffer.deallocate()
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CommandLine.arguments[1].withCString { sourcePath in
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let sourceNamesLength = listxattr(sourcePath, nil, 0, 0)
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if sourceNamesLength == -1 {
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print("listxattr for source failed: \(errno)", to: &SwiftErr.stream)
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exit(1)
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}
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let sourceNamesBuffer = UnsafeMutablePointer<Int8>.allocate(capacity: sourceNamesLength)
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if listxattr(sourcePath, sourceNamesBuffer, sourceNamesLength, 0) != sourceNamesLength {
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print("Attributes changed during system call", to: &SwiftErr.stream)
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exit(1)
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}
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var sourceNamesIndex = 0
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while sourceNamesIndex < sourceNamesLength {
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let attribute = sourceNamesBuffer + sourceNamesIndex
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let valueLength = getxattr(sourcePath, attribute, nil, 0, 0, 0)
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if valueLength == -1 {
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print("getxattr for \(String(cString: attribute)) failed: \(errno)", to: &SwiftErr.stream)
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exit(1)
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}
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let valueBuffer = UnsafeMutablePointer<Int8>.allocate(capacity: valueLength)
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if getxattr(sourcePath, attribute, valueBuffer, valueLength, 0, 0) != valueLength {
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print("Attributes changed during system call", to: &SwiftErr.stream)
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exit(1)
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}
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if setxattr(destinationPath, attribute, valueBuffer, valueLength, 0, 0) != 0 {
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print("setxattr for \(String(cString: attribute)) failed: \(errno)", to: &SwiftErr.stream)
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exit(1)
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}
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valueBuffer.deallocate()
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sourceNamesIndex += strlen(attribute) + 1
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}
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sourceNamesBuffer.deallocate()
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}
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}
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