Utf8proc - UTF-8 text processing

This binding for utf8proc.h provides Unicode normalization, case-folding, and other operations for strings in the UTF-8 encoding.

To use it add the following resolver and the dependency:

sbt

resolvers += Resolver.bintrayRepo("scala-native-bindgen", "maven")
libraryDependencies += "org.scala-native.bindgen" %%% "libutf8proc" % "0.3.1"

Maven

<repositories>
  <repository>
    <id>maven</id>
    <url>http://dl.bintray.com/scala-native-bindgen/maven</url>
  </repository>
</repositories>

<dependencies>
  <dependency>
    <groupId>org.scala-native.bindgen</groupId>
    <artifactId>libutf8proc_native0.3_2.11</artifactId>
    <version>0.3.1</version>
  </dependency>
</dependencies>

Gradle

repositories {
  maven {
    url "http://dl.bintray.com/scala-native-bindgen/maven"
  }
}

dependencies {
  compile group: 'org.scala-native.bindgen', name: 'libutf8proc_native0.3_2.11', version: '0.3.1'
}

Example

import org.scalanative.bindgen.bindings.utf8proc.utf8proc._
import scala.scalanative.native._

val text    = c"Spørge"
val textlen = string.strlen(text)

val codepoint        = stackalloc[utf8proc_int32_t]
var textpos: CSize   = 0
var textwidth: CSize = 0

while (textpos < textlen) {
  val bytes = utf8proc_iterate(
    text.cast[Ptr[UByte]] + textpos,
    textlen - textpos,
    codepoint
  )
  textwidth += utf8proc_charwidth(!codepoint)
  textpos += bytes
}

assert(textlen == 7)
assert(textwidth == 6)

Full source at GitHub