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Diffstat (limited to 'lib/src/main/kotlin/Stat.kt')
| -rw-r--r-- | lib/src/main/kotlin/Stat.kt | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/lib/src/main/kotlin/Stat.kt b/lib/src/main/kotlin/Stat.kt new file mode 100644 index 0000000..20692c5 --- /dev/null +++ b/lib/src/main/kotlin/Stat.kt @@ -0,0 +1,151 @@ +import net.InMessage +import net.OutMessage +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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