Package com.puppycrawl.tools.checkstyle

Class ConfigurationLoader

java.lang.Object

com.puppycrawl.tools.checkstyle.ConfigurationLoader

public final class ConfigurationLoader
extends Object

Loads a configuration from a standard configuration XML file.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ConfigurationLoader.IgnoredModulesOptions	Enum to specify behaviour regarding ignored modules.
private class	ConfigurationLoader.InternalLoader	Implements the SAX document handler interfaces, so they do not appear in the public API of the ConfigurationLoader.

Field Summary

Fields

Modifier and Type	Field	Description
private static char	DOLLAR_SIGN	Dollar sign literal.
private static String	DOLLAR_SIGN_STRING	Dollar sign string.
private static String	DTD_CONFIGURATION_NAME_1_0	The resource for version 1_0 of the configuration dtd.
private static String	DTD_CONFIGURATION_NAME_1_1	The resource for version 1_1 of the configuration dtd.
private static String	DTD_CONFIGURATION_NAME_1_2	The resource for version 1_2 of the configuration dtd.
static String	DTD_CONFIGURATION_NAME_1_3	The resource for version 1_3 of the configuration dtd.
private static String	DTD_PUBLIC_CS_ID_1_0	The new public ID for version 1_0 of the configuration dtd.
private static String	DTD_PUBLIC_CS_ID_1_1	The new public ID for version 1_1 of the configuration dtd.
private static String	DTD_PUBLIC_CS_ID_1_2	The new public ID for version 1_2 of the configuration dtd.
static String	DTD_PUBLIC_CS_ID_1_3	The new public ID for version 1_3 of the configuration dtd.
private static String	DTD_PUBLIC_ID_1_0	The public ID for version 1_0 of the configuration dtd.
private static String	DTD_PUBLIC_ID_1_1	The public ID for version 1_1 of the configuration dtd.
private static String	DTD_PUBLIC_ID_1_2	The public ID for version 1_2 of the configuration dtd.
private static String	DTD_PUBLIC_ID_1_3	The public ID for version 1_3 of the configuration dtd.
private boolean	omitIgnoredModules	Flags if modules with the severity 'ignore' should be omitted.
private PropertyResolver	overridePropsResolver	Property resolver.
private static String	SAX_PARSE_EXCEPTION_FORMAT	Format of message for sax parse exception.
private ConfigurationLoader.InternalLoader	saxHandler	The SAX document handler.
private ThreadModeSettings	threadModeSettings	The thread mode configuration.
private static String	UNABLE_TO_PARSE_EXCEPTION_PREFIX	Prefix for the exception when unable to parse resource.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	ConfigurationLoader(PropertyResolver overrideProps, boolean omitIgnoredModules, ThreadModeSettings threadModeSettings)	Creates a new ConfigurationLoader instance.

Method Summary

Modifier and Type	Method	Description
private static Map<String,String>	createIdToResourceNameMap()	Creates mapping between local resources and dtd ids.
static Configuration	loadConfiguration(String config, PropertyResolver overridePropsResolver)	Returns the module configurations in a specified file.
static Configuration	loadConfiguration(String config, PropertyResolver overridePropsResolver, ConfigurationLoader.IgnoredModulesOptions ignoredModulesOptions)	Returns the module configurations in a specified file.
static Configuration	loadConfiguration(String config, PropertyResolver overridePropsResolver, ConfigurationLoader.IgnoredModulesOptions ignoredModulesOptions, ThreadModeSettings threadModeSettings)	Returns the module configurations in a specified file.
static Configuration	loadConfiguration(String config, PropertyResolver overridePropsResolver, ThreadModeSettings threadModeSettings)	Returns the module configurations in a specified file.
static Configuration	loadConfiguration(InputSource configSource, PropertyResolver overridePropsResolver, ConfigurationLoader.IgnoredModulesOptions ignoredModulesOptions)	Returns the module configurations from a specified input source.
static Configuration	loadConfiguration(InputSource configSource, PropertyResolver overridePropsResolver, ConfigurationLoader.IgnoredModulesOptions ignoredModulesOptions, ThreadModeSettings threadModeSettings)	Returns the module configurations from a specified input source.
private Configuration	parseInputSource(InputSource source)	Parses the specified input source loading the configuration information.
private static void	parsePropertyString(String value, Collection<String> fragments, Collection<String> propertyRefs)	Parses a string containing ${xxx} style property references into two collections.
private static String	replaceProperties(String value, PropertyResolver props, String defaultValue)	Replaces ${xxx} style constructions in the given value with the string value of the corresponding data types.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DTD_PUBLIC_CS_ID_1_3

public static final String DTD_PUBLIC_CS_ID_1_3

The new public ID for version 1_3 of the configuration dtd.

See Also:

Constant Field Values

DTD_CONFIGURATION_NAME_1_3

public static final String DTD_CONFIGURATION_NAME_1_3

The resource for version 1_3 of the configuration dtd.

See Also:

Constant Field Values

SAX_PARSE_EXCEPTION_FORMAT

private static final String SAX_PARSE_EXCEPTION_FORMAT

Format of message for sax parse exception.

See Also:

Constant Field Values

DTD_PUBLIC_ID_1_0

private static final String DTD_PUBLIC_ID_1_0

The public ID for version 1_0 of the configuration dtd.

See Also:

Constant Field Values

DTD_PUBLIC_CS_ID_1_0

private static final String DTD_PUBLIC_CS_ID_1_0

The new public ID for version 1_0 of the configuration dtd.

See Also:

Constant Field Values

DTD_CONFIGURATION_NAME_1_0

private static final String DTD_CONFIGURATION_NAME_1_0

The resource for version 1_0 of the configuration dtd.

See Also:

Constant Field Values

DTD_PUBLIC_ID_1_1

private static final String DTD_PUBLIC_ID_1_1

The public ID for version 1_1 of the configuration dtd.

See Also:

Constant Field Values

DTD_PUBLIC_CS_ID_1_1

private static final String DTD_PUBLIC_CS_ID_1_1

The new public ID for version 1_1 of the configuration dtd.

See Also:

Constant Field Values

DTD_CONFIGURATION_NAME_1_1

private static final String DTD_CONFIGURATION_NAME_1_1

The resource for version 1_1 of the configuration dtd.

See Also:

Constant Field Values

DTD_PUBLIC_ID_1_2

private static final String DTD_PUBLIC_ID_1_2

The public ID for version 1_2 of the configuration dtd.

See Also:

Constant Field Values

DTD_PUBLIC_CS_ID_1_2

private static final String DTD_PUBLIC_CS_ID_1_2

The new public ID for version 1_2 of the configuration dtd.

See Also:

Constant Field Values

DTD_CONFIGURATION_NAME_1_2

private static final String DTD_CONFIGURATION_NAME_1_2

The resource for version 1_2 of the configuration dtd.

See Also:

Constant Field Values

DTD_PUBLIC_ID_1_3

private static final String DTD_PUBLIC_ID_1_3

The public ID for version 1_3 of the configuration dtd.

See Also:

Constant Field Values

UNABLE_TO_PARSE_EXCEPTION_PREFIX

private static final String UNABLE_TO_PARSE_EXCEPTION_PREFIX

Prefix for the exception when unable to parse resource.

See Also:

Constant Field Values

DOLLAR_SIGN

private static final char DOLLAR_SIGN

Dollar sign literal.

See Also:

Constant Field Values

DOLLAR_SIGN_STRING

private static final String DOLLAR_SIGN_STRING

Dollar sign string.

saxHandler

private final ConfigurationLoader.InternalLoader saxHandler

The SAX document handler.

overridePropsResolver

private final PropertyResolver overridePropsResolver

Property resolver.

omitIgnoredModules

private final boolean omitIgnoredModules

Flags if modules with the severity 'ignore' should be omitted.

threadModeSettings

private final ThreadModeSettings threadModeSettings

The thread mode configuration.

Constructor Detail

ConfigurationLoader

private ConfigurationLoader(PropertyResolver overrideProps,
                            boolean omitIgnoredModules,
                            ThreadModeSettings threadModeSettings)
                     throws ParserConfigurationException,
                            SAXException

Creates a new ConfigurationLoader instance.

Parameters:

overrideProps - resolver for overriding properties

omitIgnoredModules - true if ignored modules should be omitted

threadModeSettings - the thread mode configuration

Throws:

ParserConfigurationException - if an error occurs

SAXException - if an error occurs

Method Detail

createIdToResourceNameMap

private static Map<String,String> createIdToResourceNameMap()

Creates mapping between local resources and dtd ids. This method can't be moved to inner class because it must stay static because it is called from constructor and inner class isn't static.

Returns:

map between local resources and dtd ids.

parseInputSource

private Configuration parseInputSource(InputSource source)
                                throws IOException,
                                       SAXException

Parses the specified input source loading the configuration information. The stream wrapped inside the source, if any, is NOT explicitly closed after parsing, it is the responsibility of the caller to close the stream.

Parameters:

source - the source that contains the configuration data

Returns:

the check configurations

Throws:

IOException - if an error occurs

SAXException - if an error occurs

loadConfiguration

public static Configuration loadConfiguration(String config,
                                              PropertyResolver overridePropsResolver)
                                       throws CheckstyleException

Returns the module configurations in a specified file.

Parameters:

config - location of config file, can be either a URL or a filename

overridePropsResolver - overriding properties

Returns:

the check configurations

Throws:

CheckstyleException - if an error occurs

loadConfiguration

public static Configuration loadConfiguration(String config,
                                              PropertyResolver overridePropsResolver,
                                              ThreadModeSettings threadModeSettings)
                                       throws CheckstyleException

Returns the module configurations in a specified file.

Parameters:

config - location of config file, can be either a URL or a filename

overridePropsResolver - overriding properties

threadModeSettings - the thread mode configuration

Returns:

the check configurations

Throws:

CheckstyleException - if an error occurs

loadConfiguration

public static Configuration loadConfiguration(String config,
                                              PropertyResolver overridePropsResolver,
                                              ConfigurationLoader.IgnoredModulesOptions ignoredModulesOptions)
                                       throws CheckstyleException

Returns the module configurations in a specified file.

Parameters:

config - location of config file, can be either a URL or a filename

overridePropsResolver - overriding properties

ignoredModulesOptions - OMIT if modules with severity 'ignore' should be omitted, EXECUTE otherwise

Returns:

the check configurations

Throws:

CheckstyleException - if an error occurs

loadConfiguration

public static Configuration loadConfiguration(String config,
                                              PropertyResolver overridePropsResolver,
                                              ConfigurationLoader.IgnoredModulesOptions ignoredModulesOptions,
                                              ThreadModeSettings threadModeSettings)
                                       throws CheckstyleException

Returns the module configurations in a specified file.

Parameters:

config - location of config file, can be either a URL or a filename

overridePropsResolver - overriding properties

ignoredModulesOptions - OMIT if modules with severity 'ignore' should be omitted, EXECUTE otherwise

threadModeSettings - the thread mode configuration

Returns:

the check configurations

Throws:

CheckstyleException - if an error occurs

loadConfiguration

public static Configuration loadConfiguration(InputSource configSource,
                                              PropertyResolver overridePropsResolver,
                                              ConfigurationLoader.IgnoredModulesOptions ignoredModulesOptions)
                                       throws CheckstyleException

Returns the module configurations from a specified input source. Note that if the source does wrap an open byte or character stream, clients are required to close that stream by themselves

Parameters:

configSource - the input stream to the Checkstyle configuration

overridePropsResolver - overriding properties

ignoredModulesOptions - OMIT if modules with severity 'ignore' should be omitted, EXECUTE otherwise

Returns:

the check configurations

Throws:

CheckstyleException - if an error occurs

loadConfiguration

public static Configuration loadConfiguration(InputSource configSource,
                                              PropertyResolver overridePropsResolver,
                                              ConfigurationLoader.IgnoredModulesOptions ignoredModulesOptions,
                                              ThreadModeSettings threadModeSettings)
                                       throws CheckstyleException

Returns the module configurations from a specified input source. Note that if the source does wrap an open byte or character stream, clients are required to close that stream by themselves

Parameters:

configSource - the input stream to the Checkstyle configuration

overridePropsResolver - overriding properties

ignoredModulesOptions - OMIT if modules with severity 'ignore' should be omitted, EXECUTE otherwise

threadModeSettings - the thread mode configuration

Returns:

the check configurations

Throws:

CheckstyleException - if an error occurs

replaceProperties

private static String replaceProperties(String value,
                                        PropertyResolver props,
                                        String defaultValue)
                                 throws CheckstyleException

Replaces ${xxx} style constructions in the given value with the string value of the corresponding data types. This method must remain outside inner class for easier testing since inner class requires an instance.

Code copied from ant

Parameters:

value - The string to be scanned for property references. Must not be null.

props - Mapping (String to String) of property names to their values. Must not be null.

defaultValue - default to use if one of the properties in value cannot be resolved from props.

Returns:

the original string with the properties replaced.

Throws:

CheckstyleException - if the string contains an opening ${} without a closing {@code }

parsePropertyString

private static void parsePropertyString(String value,
                                        Collection<String> fragments,
                                        Collection<String> propertyRefs)
                                 throws CheckstyleException

Parses a string containing ${xxx} style property references into two collections. The first one is a collection of text fragments, while the other is a set of string property names. null entries in the first collection indicate a property reference from the second collection.

Code copied from ant

Parameters:

value - Text to parse. Must not be null.

fragments - Collection to add text fragments to. Must not be null.

propertyRefs - Collection to add property names to. Must not be null.

Throws:

CheckstyleException - if the string contains an opening ${} without a closing {@code }