Anonymous user
UTF-8 encode and decode: Difference between revisions
→{{header|Scala}}
Line 854:
}</lang>
=== Functional solution===
<lang scala>
object UTF8EncodeAndDecode extends App {
val codePoints = Seq(0x0041, 0x00F6, 0x0416, 0x20AC, 0x1D11E)
Line 865 ⟶ 867:
println("Char Name Unicode UTF-8 Decoded")
val w = if (Character.isBmpCodePoint(codePoint)) 4 else 5 // Compute spacing
val bytes = utf8Encode(codePoint)
Line 874 ⟶ 876:
printf(s"%-${w}c %-36s %-7s %-${16 - w}s%c%n",
codePoint, Character.getName(codePoint), leftAlignedHex, utf, utf8Decode(bytes)) }
}▼
println(s"\nSuccessfully completed without errors. [total ${scala.compat.Platform.currentTime - executionStart} ms]")
}</lang>
=== Composable and testable solution===
<lang scala>package example
object UTF8EncodeAndDecode extends TheMeat with App {
val codePoints = Seq(0x0041, 0x00F6, 0x0416, 0x20AC, 0x1D11E)
println("Char Name Unicode UTF-8 Decoded")
codePoints.foreach { codepoint => print(composeString(codepoint)) }
println(s"\nSuccessfully completed without errors. [total ${scala.compat.Platform.currentTime - executionStart} ms]")
}
trait TheMeat {
import java.nio.charset.StandardCharsets
def composeString(codePoint: Int): String = {
val w = if (Character.isBmpCodePoint(codePoint)) 4 else 5 // Compute spacing
val bytes = utf8Encode(codePoint)
def leftAlignedHex: String = f"U+${codePoint}%04X"
def utf: String = bytes.foldLeft("")(_ + "%02X ".format(_))
s"%-${w}c %-36s %-7s %-${16 - w}s%c%n"
.format(codePoint, Character.getName(codePoint), leftAlignedHex, utf, utf8Decode(bytes))
▲ }
def utf8Encode(codepoint: Int): Array[Byte] =
new String(Array[Int](codepoint), 0, 1).getBytes(StandardCharsets.UTF_8)
def utf8Decode(bytes: Array[Byte]): Int =
new String(bytes, StandardCharsets.UTF_8).codePointAt(0)
}
</lang>
=={{header|Sidef}}==
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