juce::LocalisedStrings Class Reference

Used to convert strings to localised foreign-language versions. More...

#include <juce_LocalisedStrings.h>

Collaboration diagram for juce::LocalisedStrings:

Public Member Functions
	LocalisedStrings (const File &fileToLoad, bool ignoreCaseOfKeys)
	Creates a set of translations from a file. More...
	LocalisedStrings (const LocalisedStrings &)
	LocalisedStrings (const String &fileContents, bool ignoreCaseOfKeys)
	Creates a set of translations from the text of a translation file. More...
	~LocalisedStrings ()=default
	Destructor. More...
void	addStrings (const LocalisedStrings &)
	Adds and merges another set of translations into this set. More...
const StringArray &	getCountryCodes () const
	Returns the list of suitable country codes listed in the translation file. More...
String	getLanguageName () const
	Returns the name of the language specified in the translation file. More...
const StringPairArray &	getMappings () const
	Provides access to the actual list of mappings. More...
LocalisedStrings &	operator= (const LocalisedStrings &)
void	setFallback (LocalisedStrings *fallbackStrings)
	Gives this object a set of strings to use as a fallback if a string isn't found. More...
String	translate (const String &text) const
	Attempts to look up a string and return its localised version. More...
String	translate (const String &text, const String &resultIfNotFound) const
	Attempts to look up a string and return its localised version. More...

Static Public Member Functions
static LocalisedStrings *	getCurrentMappings ()
	Returns the currently selected set of mappings. More...
static void	setCurrentMappings (LocalisedStrings *newTranslations)
	Selects the current set of mappings to be used by the system. More...
static String	translateWithCurrentMappings (const char *text)
	Tries to translate a string using the currently selected set of mappings. More...
static String	translateWithCurrentMappings (const String &text)
	Tries to translate a string using the currently selected set of mappings. More...

Private Member Functions
void	loadFromText (const String &, bool ignoreCase)

Private Attributes
StringArray	countryCodes
std::unique_ptr< LocalisedStrings >	fallback
String	languageName
StringPairArray	translations

Detailed Description

Used to convert strings to localised foreign-language versions.

This is basically a look-up table of strings and their translated equivalents. It can be loaded from a text file, so that you can supply a set of localised versions of strings that you use in your app.

To use it in your code, simply call the translate() method on each string that might have foreign versions, and if none is found, the method will just return the original string.

The translation file should start with some lines specifying a description of the language it contains, and also a list of ISO country codes where it might be appropriate to use the file. After that, each line of the file should contain a pair of quoted strings with an '=' sign.

E.g. for a french translation, the file might be:

language: French
countries: fr be mc ch lu
 
"hello" = "bonjour"
"goodbye" = "au revoir"

If the strings need to contain a quote character, they can use '"' instead, and if the first non-whitespace character on a line isn't a quote, then it's ignored, (you can use this to add comments).

Note that this is a singleton class, so don't create or destroy the object directly. There's also a TRANS(text) macro defined to make it easy to use the this.

E.g.

printSomething (TRANS("hello"));

This macro is used in the JUCE classes themselves, so your application has a chance to intercept and translate any internal JUCE text strings that might be shown. (You can easily get a list of all the messages by searching for the TRANS() macro in the JUCE source code).

@tags{Core}

Constructor & Destructor Documentation

LocalisedStrings() [1/3]

juce::LocalisedStrings::LocalisedStrings	(	const String &	fileContents,
		bool	ignoreCaseOfKeys
	)

Creates a set of translations from the text of a translation file.

When you create one of these, you can call setCurrentMappings() to make it the set of mappings that the system's using.

LocalisedStrings() [2/3]

juce::LocalisedStrings::LocalisedStrings	(	const File &	fileToLoad,
		bool	ignoreCaseOfKeys
	)

Creates a set of translations from a file.

When you create one of these, you can call setCurrentMappings() to make it the set of mappings that the system's using.

LocalisedStrings() [3/3]

juce::LocalisedStrings::LocalisedStrings

(

const LocalisedStrings &

)

~LocalisedStrings()

juce::LocalisedStrings::~LocalisedStrings ( )

default

Destructor.

Member Function Documentation

addStrings()

void juce::LocalisedStrings::addStrings

(

const LocalisedStrings &

)

Adds and merges another set of translations into this set.

Note that the language name and country codes of the new LocalisedStrings object must match that of this object - an assertion will be thrown if they don't match.

Any existing values will have their mappings overwritten by the new ones.

getCountryCodes()

const StringArray& juce::LocalisedStrings::getCountryCodes ( ) const

inline

Returns the list of suitable country codes listed in the translation file.

These is specified in the file using a line starting with "countries:", e.g.

countries: fr be mc ch lu

The country codes are supposed to be 2-character ISO compliant codes.

getCurrentMappings()

static LocalisedStrings* juce::LocalisedStrings::getCurrentMappings ( )

static

Returns the currently selected set of mappings.

This is the object that was last passed to setCurrentMappings(). It may be nullptr if none has been created.

getLanguageName()

String juce::LocalisedStrings::getLanguageName ( ) const

inline

Returns the name of the language specified in the translation file.

This is specified in the file using a line starting with "language:", e.g.

language: german

getMappings()

const StringPairArray& juce::LocalisedStrings::getMappings ( ) const

inline

Provides access to the actual list of mappings.

loadFromText()

void juce::LocalisedStrings::loadFromText ( const String &  , bool  ignoreCase  )

private

operator=()

LocalisedStrings& juce::LocalisedStrings::operator=

(

const LocalisedStrings &

)

setCurrentMappings()

static void juce::LocalisedStrings::setCurrentMappings ( LocalisedStrings *  newTranslations )

static

Selects the current set of mappings to be used by the system.

The object you pass in will be automatically deleted when no longer needed, so don't keep a pointer to it. You can also pass in nullptr to remove the current mappings.

See also the TRANS() macro, which uses the current set to do its translation.

See also

translateWithCurrentMappings

setFallback()

void juce::LocalisedStrings::setFallback

(

LocalisedStrings *

fallbackStrings

)

Gives this object a set of strings to use as a fallback if a string isn't found.

The object that is passed-in will be owned and deleted by this object when no longer needed. It can be nullptr to clear the existing fallback object.

translate() [1/2]

String juce::LocalisedStrings::translate

(

const String &

text

)

const

Attempts to look up a string and return its localised version.

If the string isn't found in the list, the original string will be returned.

translate() [2/2]

String juce::LocalisedStrings::translate	(	const String &	text,
		const String &	resultIfNotFound
	)		const

Attempts to look up a string and return its localised version.

If the string isn't found in the list, the resultIfNotFound string will be returned.

translateWithCurrentMappings() [1/2]

static String juce::LocalisedStrings::translateWithCurrentMappings ( const char *  text )

static

Tries to translate a string using the currently selected set of mappings.

If no mapping has been set, or if the mapping doesn't contain a translation for the string, this will just return the original string.

See also the TRANS() macro, which uses this method to do its translation.

See also

setCurrentMappings, getCurrentMappings

translateWithCurrentMappings() [2/2]

static String juce::LocalisedStrings::translateWithCurrentMappings ( const String &  text )

static

Tries to translate a string using the currently selected set of mappings.

If no mapping has been set, or if the mapping doesn't contain a translation for the string, this will just return the original string.

See also the TRANS() macro, which uses this method to do its translation.

See also

setCurrentMappings, getCurrentMappings

Member Data Documentation

countryCodes

StringArray juce::LocalisedStrings::countryCodes

private

fallback

std::unique_ptr<LocalisedStrings> juce::LocalisedStrings::fallback

private

languageName

String juce::LocalisedStrings::languageName

private

translations

StringPairArray juce::LocalisedStrings::translations

private

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The documentation for this class was generated from the following file:

• juce_LocalisedStrings.h