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import java.math.BigInteger
// TODO: add time conversion methods
/**
* File attributes. The `type` and `dev` attributes are ignored since they are for kernel use only. Time is measured in
* seconds, since the epoch (Jan 1 00:00 1970 GMT).
*/
class Stat {
/**
* The FID sent the T-stat message.
*/
val fid: UInt
/**
* The QID of the file.
*/
val qid: QID
/**
* Permissions and flags.
*/
val mode: FilePermissions
/**
* Last acces time.
*/
val atime: UInt
/**
* Last modification time.
*/
val mtime: UInt
/**
* The length of the file in bytes.
*/
val length: ULong
/**
* The file name, which is `/` if the file is the root directory.
*/
val name: String
/**
* The owner's name.
*/
val uid: String
/**
* The group's name.
*/
val gid: String
/**
* The name of the user who last modified the file.
*/
val muid: String
/**
* Make an instance of [Stat] from each of its fields.
*
* @param fid The FID sent the T-stat message.
* @param qid The QID of the file.
* @param mode Permissions and flags.
* @param atime Last acces time.
* @param mtime Last modification time.
* @param length The length of the file in bytes.
* @param name The file name, which is `/` if the file is the root directory.
* @param uid The owner's name.
* @param gid The group's name.
* @param muid The name of the user who last modified the file.
*/
constructor(fid: UInt, qid: QID, mode: FilePermissions, atime: UInt, mtime: UInt, length: ULong, name: String, uid: String, gid: String, muid: String) {
this.fid = fid
this.qid = qid
this.mode = mode
this.atime = atime
this.mtime = mtime
this.length = length
this.name = name
this.uid = uid
this.gid = gid
this.muid = muid
}
/**
* Make an instance of [Stat] from raw data.
*
* @param fid The FID of the file associated with the stat instance.
* @param raw The raw stat data.
*/
constructor(fid: UInt, raw: List<UByte>) {
var offset = 0
val qid = QID(raw.slice(0..<13))
offset += 13
val mode = FilePermissions(raw.slice(offset+0..<offset+4))
offset += 4
val intFielSizes = listOf(4, 4, 8)
val intFields: MutableList<BigInteger> = mutableListOf()
for (size in intFielSizes) {
intFields.add(InMessage.convInteger(raw, offset, size))
offset += size
}
val atime = intFields[0].toInt().toUInt()
val mtime = intFields[1].toInt().toUInt()
val length = intFields[2].toLong().toULong()
val strAmount = 4
val strFields: MutableList<String> = mutableListOf()
for (i in 0..strAmount) {
val str = InMessage.convString(raw, offset)
strFields.add(str)
offset += str.length
}
val name = strFields[0]
val uid = strFields[1]
val gid = strFields[2]
val muid = strFields[3]
this.fid = fid
this.qid = qid
this.mode = mode
this.atime = atime
this.mtime = mtime
this.length = length
this.name = name
this.uid = uid
this.gid = gid
this.muid = muid
}
/**
* Turn a [Stat] instance into raw data. This leaves out the [fid] field.
*/
fun toRaw(): List<UByte> {
var bytes: List<UByte> = emptyList()
bytes += this.qid.toRaw()
bytes += OutMessage.convIntegerToBytes(BigInteger(this.mode.toPermissionInt().toString()), 4u)
bytes += OutMessage.convIntegerToBytes(BigInteger(this.atime.toString()), 4u)
bytes += OutMessage.convIntegerToBytes(BigInteger(this.mtime.toString()), 4u)
bytes += OutMessage.convIntegerToBytes(BigInteger(this.length.toString()), 8u)
bytes += OutMessage.convStringToBytes(this.name)
bytes += OutMessage.convStringToBytes(this.uid)
bytes += OutMessage.convStringToBytes(this.gid)
bytes += OutMessage.convStringToBytes(this.muid)
return bytes
}
}
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