Will pattern based or position based masking be supported?

[cswhwang]

Will pattern based or position based masking be supported?

[prasanthkv]

This library design to optimize regex patterns to mask string file or format does't matter.
Here is an example of how to configure patten for plain text.

ejmask/ejmask-extensions/src/main/java/com/ebay/ejmask/extenstion/builder/header/HeaderFieldPatternBuilder.java

Lines 26 to 59 in 807eff8

	public class HeaderFieldPatternBuilder extends AbstractRegexPatternBuilder {
	//https://regex101.com/r/yFABRL/7
	private static final String TOTAL_PATTERN_TEMPLATE = "((?i)%s)=([^\\&\"]{1,10})*";
	private static final String TOTAL_REPLACEMENT_TEMPLATE = "$1=******";
	//https://regex101.com/r/yFABRL/7
	private static final String PATTERN_TEMPLATE = "((?i)%s)=([^\\&\"]{1,%d})*";
	private static final String REPLACEMENT_TEMPLATE = "$1=xxxx-$2";
	/**
	* Build pattern to match
	*
	* @param visibleCharacters as no of characters to be visible.
	* @param fieldNames as list of field names
	* @return match patternAbstractRegexPatternBuilderTest
	*/
	@Override
	public String buildPattern(int visibleCharacters, String... fieldNames) {
	String regexOr = super.buildFieldNamesForRegexOr(fieldNames);
	return (visibleCharacters > 0) ? String.format(PATTERN_TEMPLATE, regexOr, visibleCharacters) : String.format(TOTAL_PATTERN_TEMPLATE, regexOr);
	}
	/**
	* Build pattern to replace.
	*
	* @param visibleCharacters as no of characters to be visible.
	* @param fieldNames as list of field names
	* @return match pattern
	*/
	@Override
	public String buildReplacement(int visibleCharacters, String... fieldNames) {
	return visibleCharacters > 0 ? REPLACEMENT_TEMPLATE : TOTAL_REPLACEMENT_TEMPLATE;
	}
	}

[prasanthkv]

@SteadyStill if you have any specific use case in mind please elaborate with an example