KDE 4.9 PyKDE API Reference

- KDE's Python API

# LanguageTag Class Reference

`from PyKDE4.soprano import *`

Namespace: Soprano

## Detailed Description

\class LanguageTag languagetag.h Soprano/LanguageTag

A LanguageTag represents a language according to RFC 3066 and RFC 4646.

Author:
  Greg Beauchesne <greg_b@vision-play.com>

Since:
  2.3

## Enumerations

LookupFlag | { LookupFlagNone, LookupFlagNoFallback }
MatchFilter | { MatchFilterBasic, MatchFilterExtended }

## Methods

| __init__ (self)
| __init__ (self, Soprano.LanguageTag other)
| __init__ (self, QString tag)
| __init__ (self, QLatin1String tag)
| __init__ (self, QString tag)
| __init__ (self, QLocale locale)
| __init__ (self, QLocale::Language lang, QLocale::Country country=QLocale.AnyCountry)
bool | isEmpty (self)
bool | isValid (self)
bool | matches (self, Soprano.LanguageTag range, Soprano.LanguageTag.MatchFilter scheme=Soprano.LanguageTag.MatchFilterBasic)
bool | operator != (self, Soprano.LanguageTag other)
bool | operator < (self, Soprano.LanguageTag other)
bool | operator <= (self, Soprano.LanguageTag other)
bool | operator == (self, Soprano.LanguageTag other)
bool | operator > (self, Soprano.LanguageTag other)
bool | operator >= (self, Soprano.LanguageTag other)
QStringList | subTags (self)
QLocale | toLocale (self)
QString | toPrettyString (self)
QString | toString (self)

## Static Methods

int | lookup ([Soprano.LanguageTag] choices, [Soprano.LanguageTag] priority, Soprano.LanguageTag.LookupFlags flags=Soprano.LanguageTag.LookupFlagNone, Soprano.LanguageTag.MatchFilter scheme=Soprano.LanguageTag.MatchFilterBasic)
int | lookup ([Soprano.LanguageTag] choices, Soprano.LanguageTag priority, Soprano.LanguageTag.LookupFlags flags=Soprano.LanguageTag.LookupFlagNone, Soprano.LanguageTag.MatchFilter scheme=Soprano.LanguageTag.MatchFilterBasic)

## Method Documentation

__init__ | ( |  | self ) |

Default constructor. Creates an empty language tag.

__init__ | ( | self, |
|  | Soprano.LanguageTag | other
| ) |  |  |

Copy constructor.

Parameters:

  | other | The language tag from which to copy

__init__ | ( | self, |
|  | QString | tag
| ) |  |  |

Creates a language tag.

Parameters:

  | tag | The language tag string

__init__ | ( | self, |
|  | QLatin1String | tag
| ) |  |  |

Creates a language tag.

Parameters:

  | tag | The language tag string

__init__ | ( | self, |
|  | QString | tag
| ) |  |  |

Creates a language tag.

Parameters:

  | tag | The language tag string

__init__ | ( | self, |
|  | QLocale | locale
| ) |  |  |

Creates a language tag from a QLocale. If the language is QLocale.C, then an empty LanguageTag is produced.

Parameters:

  | locale | the locale

__init__ | ( | self, |
|  | QLocale::Language | lang,
|  | QLocale::Country | country=QLocale.AnyCountry
| ) |  |  |

Creates a language tag from a language and country. If lang is QLocale.C, then an empty LanguageTag is produced.

Parameters:

  | lang | the language code

Parameters:

  | country | the country code

bool isEmpty | ( |  | self ) |

Returns:
  true if this language tag is empty.

bool isValid | ( |  | self ) |

Determines if this language tag is valid. A valid language tag is divided into subtags that are divided by "-". The tag must adhere the following rules: - Each subtag is composed only of characters in the ASCII range [a-zA-Z0-9] (letters and digits), with the exception of the first subtag, which must be composed of letters only - No subtags are empty - No subtags are longer than 8 characters - Single-character subtags cannot end the tag unless after a private use ("x") subtag (e.g. "en-x-i" and "en-x-abcd-i" are legal; "en-x", "en-i", and "en-i-abcd-g" are illegal)

Returns:
  true if this language tag is valid

bool matches | ( | self, |
|  | Soprano.LanguageTag | range,
|  | Soprano.LanguageTag.MatchFilter | scheme=Soprano.LanguageTag.MatchFilterBasic
| ) |  |  |

Match this language tag against range using the specified filtering scheme.

Parameters:

  | range | the range against which to match

Parameters:

  | scheme | the filtering scheme to use

Returns:
  true if this tag matches pattern, false if not.

bool operator != | ( | self, |
|  | Soprano.LanguageTag | other
| ) |  |  |

Comparison operator. Language tag comparisons are case-insensitive.

Returns:
  true if this tag and other differ.

bool operator < | ( | self, |
|  | Soprano.LanguageTag | other
| ) |  |  |

Comparison operator.

Returns:
  true if this tag is lexically less than other.

bool operator <= | ( | self, |
|  | Soprano.LanguageTag | other
| ) |  |  |

Comparison operator.

Returns:
  true if this tag is lexically less than or equal to other.

bool operator == | ( | self, |
|  | Soprano.LanguageTag | other
| ) |  |  |

Comparison operator. Language tag comparisons are case-insensitive.

Returns:
  true if this tag and other are equal.

bool operator > | ( | self, |
|  | Soprano.LanguageTag | other
| ) |  |  |

Comparison operator.

Returns:
  true if this tag is lexically greater than other.

bool operator >= | ( | self, |
|  | Soprano.LanguageTag | other
| ) |  |  |

Comparison operator.

Returns:
  true if this tag is lexically greater than or equal to other.

QStringList subTags | ( |  | self ) |

Returns:
  the subtag parts that make up this language tag

QLocale toLocale | ( |  | self ) |

Converts this LanguageTag to a locale, using the primary language tag and first two-letter language subtag, if any. If the conversion could not be performed, then the "C" QLocale is returned.

Returns:
  the converted locale

Note:
  QLocale restricts the countries that can be paired with a particular language. If the language-country pair in this tag is not in the QLocale database, or if this language tag does not contain country information, then the most appropriate country will be used for the locale. For example, "de-US" (German as spoken in the United States) is not a valid combination, and the country would be changed to Germany.

QString toPrettyString | ( |  | self ) |

Converts this LanguageTag to a string formatted according to the case rules in RFC 4647 section 4.4 (page 44).

Returns:
  the pretty string representation of this LanguageTag

QString toString | ( |  | self ) |

Converts this LanguageTag to a string.

Returns:
  the string representation of this LanguageTag

## Static Method Documentation

int lookup | ( | [Soprano.LanguageTag] | choices,
|  | [Soprano.LanguageTag] | priority,
|  | Soprano.LanguageTag.LookupFlags | flags=Soprano.LanguageTag.LookupFlagNone,
|  | Soprano.LanguageTag.MatchFilter | scheme=Soprano.LanguageTag.MatchFilterBasic
| ) |  |  |

A convenience method to select a language tag based on a single search pattern.

Parameters:

  | choices | the list of available language choices

Parameters:

  | priority | the language range against which to match

Parameters:

  | flags | flags for the lookup operation

Parameters:

  | scheme | the matching scheme to use. RFC 4647 specifies that basic (\link LanguageTag.MatchFilterBasic MatchFilterBasic\endlink) processing should be used.

Returns:
  the index of the matching language tag in choices, or < 0 if no tag matched.

\sa lookup(const QList<LanguageTag> &, const QList<LanguageTag> &, LookupFlags, MatchFilter)

int lookup | ( | [Soprano.LanguageTag] | choices,
|  | Soprano.LanguageTag | priority,
|  | Soprano.LanguageTag.LookupFlags | flags=Soprano.LanguageTag.LookupFlagNone,
|  | Soprano.LanguageTag.MatchFilter | scheme=Soprano.LanguageTag.MatchFilterBasic
| ) |  |  |

A convenience method to select a language tag based on a single search pattern.

Parameters:

  | choices | the list of available language choices

Parameters:

  | priority | the language range against which to match

Parameters:

  | flags | flags for the lookup operation

Parameters:

  | scheme | the matching scheme to use. RFC 4647 specifies that basic (\link LanguageTag.MatchFilterBasic MatchFilterBasic\endlink) processing should be used.

Returns:
  the index of the matching language tag in choices, or < 0 if no tag matched.

\sa lookup(const QList<LanguageTag> &, const QList<LanguageTag> &, LookupFlags, MatchFilter)

## Enumeration Documentation

LookupFlag

Flags for performing LanguageTag lookups.

\sa lookup()

Enumerator:

  LookupFlagNone = 0 |
  LookupFlagNoFallback = 1 |

MatchFilter

Enumerator:

  MatchFilterBasic = 0 |
  MatchFilterExtended = 1 |