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19 lines
809 B
Markdown
19 lines
809 B
Markdown
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SPDX-FileCopyrightText: 2022 Paul Schaub <vanitasvitae@fsfe.org>
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SPDX-License-Identifier: Apache-2.0
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-->
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# Evaluate Regular Expressions in OpenPGP Signatures using TCL-Regex
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RFC4880 specifies contains a section about RegularExpression subpackets on signatures.
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Within this section, the syntax of the RegularExpression subpackets is defined to be the same as Henry Spencer's "almost public domain" regular expression package.
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Since Java's `java.util.regex` syntax is too powerful, this module exists to implement regex evaluation using [tcl-regex](https://github.com/basis-technology-corp/tcl-regex-java)
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which appears to be a Java port of Henry Spencers regex package.
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To make use of this implementation, simply call
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```java
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RegexInterpreterFactory.setInstance(new HSRegexInterpreterFactory());
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```
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