How to use

getAvailableCharsetNames

method

in

libcore.icu.NativeConverter

/**
 * Returns an immutable case-insensitive map from canonical names to {@code Charset} instances.
 * If multiple charsets have the same canonical name, it is unspecified which is returned in
 * the map. This method may be slow. If you know which charset you're looking for, use
 * {@link #forName}.
 */
public static SortedMap<String, Charset> availableCharsets() {
  // Start with a copy of the built-in charsets...
  TreeMap<String, Charset> charsets = new TreeMap<String, Charset>(String.CASE_INSENSITIVE_ORDER);
  for (String charsetName : NativeConverter.getAvailableCharsetNames()) {
    // RoboVM note: Added try-catch to ignore charsets with bad names (e.g. "x-UTF-16,version=1")
    try {
      Charset charset = NativeConverter.charsetForName(charsetName);
      charsets.put(charset.name(), charset);
    } catch (IllegalCharsetNameException e) {
    }
  }
  // Add all charsets provided by all charset providers...
  for (CharsetProvider charsetProvider : ServiceLoader.load(CharsetProvider.class)) {
    Iterator<Charset> it = charsetProvider.charsets();
    while (it.hasNext()) {
      Charset cs = it.next();
      // A CharsetProvider can't override a built-in Charset.
      if (!charsets.containsKey(cs.name())) {
        charsets.put(cs.name(), cs);
      }
    }
  }
  return Collections.unmodifiableSortedMap(charsets);
}

/**
 * Returns an immutable case-insensitive map from canonical names to {@code Charset} instances.
 * If multiple charsets have the same canonical name, it is unspecified which is returned in
 * the map. This method may be slow. If you know which charset you're looking for, use
 * {@link #forName}.
 */
public static SortedMap<String, Charset> availableCharsets() {
  // Start with a copy of the built-in charsets...
  TreeMap<String, Charset> charsets = new TreeMap<String, Charset>(String.CASE_INSENSITIVE_ORDER);
  for (String charsetName : NativeConverter.getAvailableCharsetNames()) {
    // BugVM note: Added try-catch to ignore charsets with bad names (e.g. "x-UTF-16,version=1")
    try {
      Charset charset = NativeConverter.charsetForName(charsetName);
      charsets.put(charset.name(), charset);
    } catch (IllegalCharsetNameException e) {
    }
  }
  // Add all charsets provided by all charset providers...
  for (CharsetProvider charsetProvider : ServiceLoader.load(CharsetProvider.class)) {
    Iterator<Charset> it = charsetProvider.charsets();
    while (it.hasNext()) {
      Charset cs = it.next();
      // A CharsetProvider can't override a built-in Charset.
      if (!charsets.containsKey(cs.name())) {
        charsets.put(cs.name(), cs);
      }
    }
  }
  return Collections.unmodifiableSortedMap(charsets);
}

/**
 * Returns an immutable case-insensitive map from canonical names to {@code Charset} instances.
 * If multiple charsets have the same canonical name, it is unspecified which is returned in
 * the map. This method may be slow. If you know which charset you're looking for, use
 * {@link #forName}.
 */
public static SortedMap<String, Charset> availableCharsets() {
  // Start with a copy of the built-in charsets...
  TreeMap<String, Charset> charsets = new TreeMap<String, Charset>(String.CASE_INSENSITIVE_ORDER);
  for (String charsetName : NativeConverter.getAvailableCharsetNames()) {
    // RoboVM note: Added try-catch to ignore charsets with bad names (e.g. "x-UTF-16,version=1")
    try {
      Charset charset = NativeConverter.charsetForName(charsetName);
      charsets.put(charset.name(), charset);
    } catch (IllegalCharsetNameException e) {
    }
  }
  // Add all charsets provided by all charset providers...
  for (CharsetProvider charsetProvider : ServiceLoader.load(CharsetProvider.class)) {
    Iterator<Charset> it = charsetProvider.charsets();
    while (it.hasNext()) {
      Charset cs = it.next();
      // A CharsetProvider can't override a built-in Charset.
      if (!charsets.containsKey(cs.name())) {
        charsets.put(cs.name(), cs);
      }
    }
  }
  return Collections.unmodifiableSortedMap(charsets);
}

/**
 * Returns an immutable case-insensitive map from canonical names to {@code Charset} instances.
 * If multiple charsets have the same canonical name, it is unspecified which is returned in
 * the map. This method may be slow. If you know which charset you're looking for, use
 * {@link #forName}.
 */
public static SortedMap<String, Charset> availableCharsets() {
  // Start with a copy of the built-in charsets...
  TreeMap<String, Charset> charsets = new TreeMap<String, Charset>(String.CASE_INSENSITIVE_ORDER);
  for (String charsetName : NativeConverter.getAvailableCharsetNames()) {
    // BugVM note: Added try-catch to ignore charsets with bad names (e.g. "x-UTF-16,version=1")
    try {
      Charset charset = NativeConverter.charsetForName(charsetName);
      charsets.put(charset.name(), charset);
    } catch (IllegalCharsetNameException e) {
    }
  }
  // Add all charsets provided by all charset providers...
  for (CharsetProvider charsetProvider : ServiceLoader.load(CharsetProvider.class)) {
    Iterator<Charset> it = charsetProvider.charsets();
    while (it.hasNext()) {
      Charset cs = it.next();
      // A CharsetProvider can't override a built-in Charset.
      if (!charsets.containsKey(cs.name())) {
        charsets.put(cs.name(), cs);
      }
    }
  }
  return Collections.unmodifiableSortedMap(charsets);
}

/**
 * Returns an immutable case-insensitive map from canonical names to {@code Charset} instances.
 * If multiple charsets have the same canonical name, it is unspecified which is returned in
 * the map. This method may be slow. If you know which charset you're looking for, use
 * {@link #forName}.
 */
public static SortedMap<String, Charset> availableCharsets() {
  // Start with a copy of the built-in charsets...
  TreeMap<String, Charset> charsets = new TreeMap<String, Charset>(String.CASE_INSENSITIVE_ORDER);
  for (String charsetName : NativeConverter.getAvailableCharsetNames()) {
    // RoboVM note: Added try-catch to ignore charsets with bad names (e.g. "x-UTF-16,version=1")
    try {
      Charset charset = NativeConverter.charsetForName(charsetName);
      charsets.put(charset.name(), charset);
    } catch (IllegalCharsetNameException e) {
    }
  }
  // Add all charsets provided by all charset providers...
  for (CharsetProvider charsetProvider : ServiceLoader.load(CharsetProvider.class)) {
    Iterator<Charset> it = charsetProvider.charsets();
    while (it.hasNext()) {
      Charset cs = it.next();
      // A CharsetProvider can't override a built-in Charset.
      if (!charsets.containsKey(cs.name())) {
        charsets.put(cs.name(), cs);
      }
    }
  }
  return Collections.unmodifiableSortedMap(charsets);
}

/**
 * Returns an immutable case-insensitive map from canonical names to {@code Charset} instances.
 * If multiple charsets have the same canonical name, it is unspecified which is returned in
 * the map. This method may be slow. If you know which charset you're looking for, use
 * {@link #forName}.
 */
public static SortedMap<String, Charset> availableCharsets() {
  // Start with a copy of the built-in charsets...
  TreeMap<String, Charset> charsets = new TreeMap<String, Charset>(String.CASE_INSENSITIVE_ORDER);
  for (String charsetName : NativeConverter.getAvailableCharsetNames()) {
    // RoboVM note: Added try-catch to ignore charsets with bad names (e.g. "x-UTF-16,version=1")
    try {
      Charset charset = NativeConverter.charsetForName(charsetName);
      charsets.put(charset.name(), charset);
    } catch (IllegalCharsetNameException e) {
    }
  }
  // Add all charsets provided by all charset providers...
  for (CharsetProvider charsetProvider : ServiceLoader.load(CharsetProvider.class)) {
    Iterator<Charset> it = charsetProvider.charsets();
    while (it.hasNext()) {
      Charset cs = it.next();
      // A CharsetProvider can't override a built-in Charset.
      if (!charsets.containsKey(cs.name())) {
        charsets.put(cs.name(), cs);
      }
    }
  }
  return Collections.unmodifiableSortedMap(charsets);
}

/**
 * Returns an immutable case-insensitive map from canonical names to {@code Charset} instances.
 * If multiple charsets have the same canonical name, it is unspecified which is returned in
 * the map. This method may be slow. If you know which charset you're looking for, use
 * {@link #forName}.
 */
public static SortedMap<String, Charset> availableCharsets() {
  // Start with a copy of the built-in charsets...
  TreeMap<String, Charset> charsets = new TreeMap<String, Charset>(String.CASE_INSENSITIVE_ORDER);
  for (String charsetName : NativeConverter.getAvailableCharsetNames()) {
    // RoboVM note: Added try-catch to ignore charsets with bad names (e.g. "x-UTF-16,version=1")
    try {
      Charset charset = NativeConverter.charsetForName(charsetName);
      charsets.put(charset.name(), charset);
    } catch (IllegalCharsetNameException e) {
    }
  }
  // Add all charsets provided by all charset providers...
  for (CharsetProvider charsetProvider : ServiceLoader.load(CharsetProvider.class)) {
    Iterator<Charset> it = charsetProvider.charsets();
    while (it.hasNext()) {
      Charset cs = it.next();
      // A CharsetProvider can't override a built-in Charset.
      if (!charsets.containsKey(cs.name())) {
        charsets.put(cs.name(), cs);
      }
    }
  }
  return Collections.unmodifiableSortedMap(charsets);
}