com.neeve.util

Class UtlTailoring

java.lang.Object

com.neeve.util.UtlTailoring

public class UtlTailoring
extends Object

Utility class facilitating tailoring of textual content from provided properties.

This class IS NOT intended to be used by end users.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	UtlTailoring.PropertySource Allows callers to plug in different property sources.
static class	UtlTailoring.STYLE Enumerates possible tailoring styles.
static class	UtlTailoring.TailoringException Indicates that an error occured tailoring String content

Field Summary

Fields

Modifier and Type	Field and Description
static boolean	ENABLE_NEW_SPRING_STYLE_SUBSTITUTION_PARSER
static String	ENABLE_NEW_SPRING_STYLE_SUBSTITUTION_PARSER_PROP Defines the property name used to control whether or not the new 3.5 spring-style parser is enabled when calling substitute(String, PropertySource)
static String	ENABLE_SPRING_STYLE_SUBSTITUTION_PROP Defines the property name used to control whether or not UtlTailoring.STYLE.SPRING style substitution is enabled when calling substitute(String, PropertySource)
static UtlTailoring.PropertySource	ENV_SUBSTITUTION_RESOLVER The environment based substitution resolver.

Constructor Summary

Constructors

Constructor and Description
UtlTailoring()

Method Summary

Methods

Modifier and Type	Method and Description
boolean	isAppendUnreplacedProperties()
boolean	isLeaveReplacementComments()
static boolean	isPropFileComment(String line) Tests if the line is a comment line from a prop file.
static void	main(String[] args)
static String	propFileScanAndReplace(File target, Properties props, boolean appendUreplacedValues, boolean leaveReplaceComment) Convenience method equivalent to propFileScanAndReplace(String, Properties, boolean, boolean) except that the File is read in as a string and tailored.
static String	propFileScanAndReplace(String propFileContent, Properties replacementProps, boolean appendUreplacedValues, boolean leaveReplaceComment) Scans the provided String as a properties file looking for lines of the form propName=propVal replacing them with the value in the provided properties if such a property exists.
void	setAppendUnreplacedProperties(boolean appendUnreplacedProperties) Indicates that unreplaced properties should be appended at the end of the file being tailored.
void	setLeaveReplacementComments(boolean leaveReplacementComments) Indicates that when a property line is replaced a comment containing the original line should be left in the file.
static String	springScanAndReplace(File f, Properties props) Same as springScanAndReplace(String, Properties) except that the given File is read in as a string and tailored.
static String	springScanAndReplace(String string, Properties props) Scans the provided String looking for replacements sequences of the form ${toReplace} replacing them with the value specified by "toReplace" in the provided properties if such a property exists.
static String	springScanAndReplace(String string, Properties props, boolean preserveDefaults) Scans the provided String looking for replacements sequences of the form ${toReplace} replacing them with the value specified by "toReplace" in the provided properties if such a property exists.
static String	springScanAndReplace(String string, UtlTailoring.PropertySource props) Scans the provided String looking for replacements sequences of the form ${toReplace} replacing them with the value specified by "toReplace" in the provided properties if such a property exists.
static String	springScanAndReplace(String string, UtlTailoring.PropertySource props, boolean preserveDefaults) Scans the provided String looking for replacements sequences of the form ${toReplace} replacing them with the value specified by "toReplace" in the provided properties if such a property exists.
static String	substitute(String str, UtlTailoring.PropertySource props) Checks if a string contains subst(...).
static String	substituteFromEnv(String str) Performs substitute(String, PropertySource) using the UtlProps#getEnvProps() as the property source.
static String	substScanAndReplace(File f, Properties props) Same as substScanAndReplace(String, Properties) except that the given File is read in as a string and tailored.
static String	substScanAndReplace(String string, Properties props) Same as substScanAndReplace(String, PropertySource) using the given Properties as the UtlTailoring.PropertySource
static String	substScanAndReplace(String str, UtlTailoring.PropertySource props) Scans the provided String looking for replacements sequences of the form: $subst(%toReplace::defaultValue%) replacing them with the value specified by "toReplace" in the provided properties if such a property exists or the defaultValue if the property does not exist.
static void	tailorFile(File f, Properties props, UtlTailoring.STYLE style) Tailors the given file with the specified properties.

Methods inherited from class java.lang.Object

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

Field Detail

ENABLE_SPRING_STYLE_SUBSTITUTION_PROP

public static final String ENABLE_SPRING_STYLE_SUBSTITUTION_PROP

Defines the property name used to control whether or not UtlTailoring.STYLE.SPRING style substitution is enabled when calling substitute(String, PropertySource)

See Also:

Constant Field Values

ENABLE_NEW_SPRING_STYLE_SUBSTITUTION_PARSER_PROP

public static final String ENABLE_NEW_SPRING_STYLE_SUBSTITUTION_PARSER_PROP

Defines the property name used to control whether or not the new 3.5 spring-style parser is enabled when calling substitute(String, PropertySource)

See Also:

Constant Field Values

ENABLE_NEW_SPRING_STYLE_SUBSTITUTION_PARSER

public static final boolean ENABLE_NEW_SPRING_STYLE_SUBSTITUTION_PARSER

ENV_SUBSTITUTION_RESOLVER

public static final UtlTailoring.PropertySource ENV_SUBSTITUTION_RESOLVER

The environment based substitution resolver.

Constructor Detail

UtlTailoring

public UtlTailoring()

Method Detail

tailorFile

public static final void tailorFile(File f,
              Properties props,
              UtlTailoring.STYLE style)
                             throws IOException

Tailors the given file with the specified properties. If the file is a directory then this method will recursively tailor all files in the directory.

Parameters:

f - The file or directory.

props - The replacement properties.

Throws:

IOException - If there is an error tailoring.

springScanAndReplace

public static String springScanAndReplace(File f,
                          Properties props)
                                   throws IOException

Same as springScanAndReplace(String, Properties) except that the given File is read in as a string and tailored. If substitutions are made then the file is rewritten with the new content.

Returns:

If no replacements are performed the same String object will be returned.

Throws:

IOException - if there is an error reading the file.

springScanAndReplace

public static String springScanAndReplace(String string,
                          Properties props)

Scans the provided String looking for replacements sequences of the form
${toReplace}
replacing them with the value specified by "toReplace" in the provided properties if such a property exists. This replacement method also allows for default values to be specified in the form:
${toReplace,defaultValue}
if no property called "toReplace" exists then ${toReplace,defaultValue} will be replaced with defaultValue".

Parameters:

string - The string to tailor

props - The properties to used for replacements.

Returns:

If no replacements are performed the same String object will be returned.

springScanAndReplace

public static String springScanAndReplace(String string,
                          Properties props,
                          boolean preserveDefaults)

Scans the provided String looking for replacements sequences of the form
${toReplace}
replacing them with the value specified by "toReplace" in the provided properties if such a property exists. This replacement method also allows for default values to be specified in the form:
${toReplace,defaultValue}
if no property called "toReplace" exists then ${toReplace,defaultValue} will be replaced with defaultValue".

Parameters:

string - The string to tailor

props - The properties to used for replacements.

preserveDefaults - When true if a value is not specified in the properties the default will be left in place.

Returns:

If no replacements are performed the same String object will be returned.

springScanAndReplace

public static String springScanAndReplace(String string,
                          UtlTailoring.PropertySource props)
                                   throws UtlTailoring.TailoringException

Scans the provided String looking for replacements sequences of the form
${toReplace}
replacing them with the value specified by "toReplace" in the provided properties if such a property exists. This replacement method also allows for default values to be specified in the form:
${toReplace::defaultValue}
if no property called "toReplace" exists then ${toReplace,defaultValue} will be replaced with defaultValue".

Parameters:

string - The string to tailor

props - The property source to used for replacements.

Returns:

If no replacements are performed the same String object will be returned.

Throws:

UtlTailoring.TailoringException

springScanAndReplace

public static String springScanAndReplace(String string,
                          UtlTailoring.PropertySource props,
                          boolean preserveDefaults)
                                   throws UtlTailoring.TailoringException

Scans the provided String looking for replacements sequences of the form
${toReplace}
replacing them with the value specified by "toReplace" in the provided properties if such a property exists. This replacement method also allows for default values to be specified in the form:
${toReplace::defaultValue}
if no property called "toReplace" exists then ${toReplace,defaultValue} will be replaced with defaultValue".

Parameters:

string - The string to tailor

props - The property source to used for replacements.

preserveDefaults - When true if a value is not specified in the properties the default will be left in place.

Returns:

If no replacements are performed the same String object will be returned.

Throws:

UtlTailoring.TailoringException

substScanAndReplace

public static String substScanAndReplace(File f,
                         Properties props)
                                  throws IOException

Same as substScanAndReplace(String, Properties) except that the given File is read in as a string and tailored. If substitutions are made then the file is rewritten with the new content.

Returns:

If no replacements are performed the same String object will be returned.

Throws:

IOException - if there is an error reading the file.

substScanAndReplace

public static String substScanAndReplace(String string,
                         Properties props)
                                  throws Exception

Same as substScanAndReplace(String, PropertySource) using the given Properties as the UtlTailoring.PropertySource

Returns:

If no replacements are performed the same String object will be returned.

Throws:

Exception

substScanAndReplace

public static String substScanAndReplace(String str,
                         UtlTailoring.PropertySource props)
                                  throws Exception

Scans the provided String looking for replacements sequences of the form:
$subst(%toReplace::defaultValue%)
replacing them with the value specified by "toReplace" in the provided properties if such a property exists or the defaultValue if the property does not exist. This replacement method requires that a default value be supplied.

This substitution method requires supports escaping of special characters inside the $subst(...)

Returns:

If no replacements are performed the same String object will be returned.

Throws:

Exception

propFileScanAndReplace

public static String propFileScanAndReplace(File target,
                            Properties props,
                            boolean appendUreplacedValues,
                            boolean leaveReplaceComment)
                                     throws IOException

Convenience method equivalent to propFileScanAndReplace(String, Properties, boolean, boolean) except that the File is read in as a string and tailored. If substitutions are made then the file is rewritten with the new content.

Parameters:

target - The property file content

props - The replacementProps properties

appendUreplacedValues - if True values that are not replaced are appended to the end of the file.

leaveReplaceComment - if True values that are not replaced are appended to the end of the file.

Returns:

If no replacements are performed the same String object will be returned.

Throws:

IOException - if there is an error reading the file.

propFileScanAndReplace

public static String propFileScanAndReplace(String propFileContent,
                            Properties replacementProps,
                            boolean appendUreplacedValues,
                            boolean leaveReplaceComment)

Scans the provided String as a properties file looking for lines of the form
propName=propVal
replacing them with the value in the provided properties if such a property exists. Lines starting with '#' or ';' are treated as comments and not tailored.
This method preserves the original order of the properties file and comments.

Parameters:

propFileContent - The propety file content

replacementProps - The replacementProps properties

appendUreplacedValues - if True values that are not replaced are appended to the end of the file.

leaveReplaceComment - Leaves a comment indicating what was replaced

Returns:

If no replacements are performed the same String object will be returned.

isPropFileComment

public static final boolean isPropFileComment(String line)

Tests if the line is a comment line from a prop file.

Parameters:

line - The line to check

Returns:

True if the line should be considered a comment

setAppendUnreplacedProperties

public void setAppendUnreplacedProperties(boolean appendUnreplacedProperties)

Indicates that unreplaced properties should be appended at the end of the file being tailored.

Applies to UtlTailoring.STYLE.PROPFILE tailoring.

Parameters:

appendUnreplacedProperties - true to if unreplaced properties should be appended to the end of the file

isAppendUnreplacedProperties

public boolean isAppendUnreplacedProperties()

Returns:

Whether unreplaced properties should be appended at the end of the file being tailored.

setLeaveReplacementComments

public void setLeaveReplacementComments(boolean leaveReplacementComments)

Indicates that when a property line is replaced a comment containing the original line should be left in the file.

Applies to UtlTailoring.STYLE.PROPFILE tailoring.

Parameters:

leaveReplacementComments - Whether or not to leave comments about replacements

isLeaveReplacementComments

public boolean isLeaveReplacementComments()

Returns:

Whether when a property line is replaced a comment containing the original line should be left in the file.

substitute

public static final String substitute(String str,
                UtlTailoring.PropertySource props)
                               throws Exception

Checks if a string contains subst(...). If so, it parses the line through UtlStr.subst(). Following $subst(...) substitution Spring style substitution is perform unless disabled by the ENABLE_SPRING_STYLE_SUBSTITUTION_PROP property.

Throws:

Exception

substituteFromEnv

public static final String substituteFromEnv(String str)
                                      throws Exception

Performs substitute(String, PropertySource) using the UtlProps#getEnvProps() as the property source.

Parameters:

str - The String on which to perform substitution.

Returns:

The substituted string.

Throws:

Exception - If there is an error making substitutions.

main

public static final void main(String[] args)
                       throws Exception

Throws:

Exception