List of toLanguageTag() Examples

Examples of toLanguageTag()

com.ibm.icu.util.ULocale.toLanguageTag()
Returns a well-formed language tag representing this locale.
Note: If the language, country, or variant fields do not satisfy BCP47 language tag syntax requirements, they are omitted from the result. For example, using the constructor it is possible to create a Locale instance with digits in the language field, or only two characters in the variant field. Since these are not well-formed BCP47 language tag syntax, they cannot be expressed in BCP47. Since such 'legacy' locales lose information when converting to BCP47, it is recommended that clients switch to conforming locales.
Note: Underscores in the variant tag are normalized to hyphen, and all fields, keys, and values are normalized to lower case. @return a BCP47 language tag representing the locale. @draft ICU 4.2 @provisional This API might change or be removed in a future release.
java.util.Locale.toLanguageTag()
Returns a well-formed IETF BCP 47 language tag representing this locale.
If this Locale has a language, country, or variant that does not satisfy the IETF BCP 47 language tag syntax requirements, this method handles these fields as described below:
Language: If language is empty, or not well-formed (for example "a" or "e2"), it will be emitted as "und" (Undetermined).
Country: If country is not well-formed (for example "12" or "USA"), it will be omitted.
Variant: If variant is well-formed, each sub-segment (delimited by '-' or '_') is emitted as a subtag. Otherwise:
- if all sub-segments match [0-9a-zA-Z]{1,8} (for example "WIN" or "Oracle_JDK_Standard_Edition"), the first ill-formed sub-segment and all following will be appended to the private use subtag. The first appended subtag will be "lvariant", followed by the sub-segments in order, separated by hyphen. For example, "x-lvariant-WIN", "Oracle-x-lvariant-JDK-Standard-Edition".
- if any sub-segment does not match [0-9a-zA-Z]{1,8}, the variant will be truncated and the problematic sub-segment and all following sub-segments will be omitted. If the remainder is non-empty, it will be emitted as a private use subtag as above (even if the remainder turns out to be well-formed). For example, "Solaris_isjustthecoolestthing" is emitted as "x-lvariant-Solaris", not as "solaris".
Special Conversions: Java supports some old locale representations, including deprecated ISO language codes, for compatibility. This method performs the following conversions:
- Deprecated ISO language codes "iw", "ji", and "in" are converted to "he", "yi", and "id", respectively.
- A locale with language "no", country "NO", and variant "NY", representing Norwegian Nynorsk (Norway), is converted to a language tag "nn-NO".
Note: Although the language tag created by this method is well-formed (satisfies the syntax requirements defined by the IETF BCP 47 specification), it is not necessarily a valid BCP 47 language tag. For example,
```
 new Locale("xx", "YY").toLanguageTag();
```
will return "xx-YY", but the language subtag "xx" and the region subtag "YY" are invalid because they are not registered in the IANA Language Subtag Registry. @return a BCP47 language tag representing the locale @see #forLanguageTag(String) @since 1.7

Examples of com.ibm.icu.util.ULocale.toLanguageTag()

   */
  public static boolean isValidLanguageTag(String tag){
    try {
      if (tag.equals("x-w3c-test")) return true; // hack for testing :(
      ULocale locale = ULocale.forLanguageTag(tag);
      if (locale.toLanguageTag() == null) return false;
      // We don't accept "x" extensions (private use tags)
      if(locale.getExtension("x".charAt(0))!=null) return false;
      if (!locale.toLanguageTag().equalsIgnoreCase(tag)) return false;
      return true;
    } catch (Exception e) {

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Examples of com.ibm.icu.util.ULocale.toLanguageTag()

      if (tag.equals("x-w3c-test")) return true; // hack for testing :(
      ULocale locale = ULocale.forLanguageTag(tag);
      if (locale.toLanguageTag() == null) return false;
      // We don't accept "x" extensions (private use tags)
      if(locale.getExtension("x".charAt(0))!=null) return false;
      if (!locale.toLanguageTag().equalsIgnoreCase(tag)) return false;
      return true;
    } catch (Exception e) {
      return false;
    }
  }

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Examples of com.ibm.icu.util.ULocale.toLanguageTag()

        }
            // We don't accept "x" extensions (private use tags)
            if (locale.getExtension("x".charAt(0)) != null) {
                return false;
        }
            if (!locale.toLanguageTag().equalsIgnoreCase(tag)) {
                return false;
        }
            return true;
        } catch (Exception e) {
            return false;

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Examples of com.ibm.icu.util.ULocale.toLanguageTag()

     * @return true if a valid language tag, otherwise false
     */
    public static boolean isValidLanguageTag(String tag) {
        try {
            ULocale locale = ULocale.forLanguageTag(tag);
            if (locale.toLanguageTag() == null) {
                return false;
        }
            // We don't accept "x" extensions (private use tags)
            if (locale.getExtension("x".charAt(0)) != null) {
                return false;

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Examples of com.ibm.icu.util.ULocale.toLanguageTag()

   */
  public static boolean isValidLanguageTag(String tag){
    try {
      if (tag.equals("x-w3c-test")) return true; // hack for testing :(
      ULocale locale = ULocale.forLanguageTag(tag);
      if (locale.toLanguageTag() == null) return false;
      // We don't accept "x" extensions (private use tags)
      if(locale.getExtension("x".charAt(0))!=null) return false;
      if (!locale.toLanguageTag().equalsIgnoreCase(tag)) return false;
      return true;
    } catch (Exception e) {

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Examples of com.ibm.icu.util.ULocale.toLanguageTag()

      if (tag.equals("x-w3c-test")) return true; // hack for testing :(
      ULocale locale = ULocale.forLanguageTag(tag);
      if (locale.toLanguageTag() == null) return false;
      // We don't accept "x" extensions (private use tags)
      if(locale.getExtension("x".charAt(0))!=null) return false;
      if (!locale.toLanguageTag().equalsIgnoreCase(tag)) return false;
      return true;
    } catch (Exception e) {
      return false;
    }
  }

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Examples of com.ibm.icu.util.ULocale.toLanguageTag()

                ULocale loc = bld.create();
                if (!expected[1].equals(loc.toString())) {
                    errln("FAIL: Wrong locale ID - " + loc + 
                            " for test case: " + Utility.arrayToString(TESTCASE[tidx]));
                }
                String langtag = loc.toLanguageTag();
                if (!expected[0].equals(langtag)) {
                    errln("FAIL: Wrong language tag - " + langtag + 
                            " for test case: " + Utility.arrayToString(TESTCASE[tidx]));
                }
                ULocale loc1 = ULocale.forLanguageTag(langtag);

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Examples of com.ibm.icu.util.ULocale.toLanguageTag()

            {"it@collation=badcollationtype;colStrength=identical;cu=usd-eur", "it-u-ks-identic"},
        };


        for (int i = 0; i < locale_to_langtag.length; i++) {
            ULocale loc = new ULocale(locale_to_langtag[i][0]);
            String langtag = loc.toLanguageTag();
            if (!langtag.equals(locale_to_langtag[i][1])) {
                errln("FAIL: toLanguageTag returned language tag [" + langtag + "] for locale ["
                        + loc + "] - expected: [" + locale_to_langtag[i][1] + "]");
            }
        }

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Examples of com.ibm.icu.util.ULocale.toLanguageTag()

   */
  public static boolean isValidLanguageTag(String tag){
    try {
      if (tag.equals("x-w3c-test")) return true; // hack for testing :(
      ULocale locale = ULocale.forLanguageTag(tag);
      if (locale.toLanguageTag() == null) return false;
      // We don't accept "x" extensions (private use tags)
      if(locale.getExtension("x".charAt(0))!=null) return false;
      if (!locale.toLanguageTag().equalsIgnoreCase(tag)) return false;
      return true;
    } catch (Exception e) {

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Examples of com.ibm.icu.util.ULocale.toLanguageTag()

      if (tag.equals("x-w3c-test")) return true; // hack for testing :(
      ULocale locale = ULocale.forLanguageTag(tag);
      if (locale.toLanguageTag() == null) return false;
      // We don't accept "x" extensions (private use tags)
      if(locale.getExtension("x".charAt(0))!=null) return false;
      if (!locale.toLanguageTag().equalsIgnoreCase(tag)) return false;
      return true;
    } catch (Exception e) {
      return false;
    }
  }

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