Published September 20, 2026
| Version 1.2.1
Software
Open
pslr: Public Suffix List Engine
Authors/Creators
Description
A focused R implementation of the Public Suffix List (PSL). Bundles a reproducible, pinned PSL snapshot and implements the official prevailing-rule algorithm to answer public-suffix (eTLD) and registrable-domain (eTLD+1) queries. Distinguishes ICANN and PRIVATE rule sections, accepts Unicode and ASCII hostnames via punycoder canonicalization, and supports an explicit, validated offline refresh path. The matcher is compiled with cpp11 and requires no external system library. Used as the PSL engine by the rurl package.
Notes
Part of a three-package ecosystem for URL handling in R: pslr (Public Suffix List matching), punycoder (Punycode/IDNA), and rurl (URL parsing/normalization). pslr bundles a pinned snapshot of the Public Suffix List as its source of truth for registrable domains; that data (inst/extdata/) is distributed under the Mozilla Public License 2.0, separately from the MIT-licensed package code.
Files
bart-turczynski/pslr-v1.2.1.zip
Additional details
Related works
- Is documented by
- Software documentation: https://CRAN.R-project.org/package=pslr (URL)
- Is identical to
- Software: https://CRAN.R-project.org/package=pslr (URL)
- Is required by
- Software: https://CRAN.R-project.org/package=rurl (URL)
- Requires
- Software: https://CRAN.R-project.org/package=punycoder (URL)
Software
- Repository URL
- https://github.com/bart-turczynski/pslr
References
- Mozilla Foundation and contributors. Public Suffix List. https://publicsuffix.org/
- Public Suffix List Format and Algorithm. https://github.com/publicsuffix/list/wiki/Format
- Berners-Lee, T., Fielding, R., & Masinter, L. (2005). RFC 3986: Uniform Resource Identifier (URI): Generic Syntax. IETF.
- Unicode Consortium. UTS #46: Unicode IDNA Compatibility Processing. https://www.unicode.org/reports/tr46/