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Use _NSGetExecutablePath() instead of proc_pidpath() to get the main executable path. #374

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Merged
merged 2 commits into from
Apr 25, 2024
Merged

Use _NSGetExecutablePath() instead of proc_pidpath() to get the main executable path. #374

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8315058
Use `_NSGetExecutablePath()` instead of `proc_pidpath()` to get the m…
grynspan Apr 25, 2024
d7d818a
Fix a typo on the Windows path
grynspan Apr 25, 2024
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18 changes: 13 additions & 5 deletions Sources/Testing/Support/Additions/CommandLineAdditions.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -28,12 +28,20 @@ extension CommandLine {
static var executablePath: String {
get throws {
#if os(macOS)
return try withUnsafeTemporaryAllocation(of: CChar.self, capacity: Int(PATH_MAX) * 2) { buffer in
guard 0 != proc_pidpath(getpid(), buffer.baseAddress!, UInt32(buffer.count)) else {
throw CError(rawValue: swt_errno())
var result: String?
var bufferCount = UInt32(1024)
while result == nil {
result = withUnsafeTemporaryAllocation(of: CChar.self, capacity: Int(bufferCount)) { buffer in
// _NSGetExecutablePath returns 0 on success and -1 if bufferCount is
// too small. If that occurs, we'll return nil here and loop with the
// new value of bufferCount.
if 0 == _NSGetExecutablePath(buffer.baseAddress, &bufferCount) {
return String(cString: buffer.baseAddress!)
}
return nil
}
return String(cString: buffer.baseAddress!)
}
return result!
#elseif os(Linux)
return try withUnsafeTemporaryAllocation(of: CChar.self, capacity: Int(PATH_MAX) * 2) { buffer in
let readCount = readlink("/proc/\(getpid())/exe", buffer.baseAddress!, buffer.count - 1)
Expand All @@ -49,7 +57,7 @@ extension CommandLine {
throw Win32Error(rawValue: GetLastError())
}
guard let path = String.decodeCString(buffer.baseAddress!, as: UTF16.self)?.result else {
throw CError(rawValue: ERROR_ILLEGAL_CHARACTER)
throw Win32Error(rawValue: ERROR_ILLEGAL_CHARACTER)
}
return path
}
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