goxslt

An XSLT 3.0 processor written in Go, built on goxml and goxpath.

Status

Beta — goxslt covers most commonly used XSLT features: template matching with priorities and modes, xsl:apply-templates, xsl:call-template, xsl:next-match, xsl:apply-imports, xsl:for-each / xsl:for-each-group (group-by, group-adjacent, group-starting-with, group-ending-with), xsl:choose, variables and parameters with type declarations, xsl:copy / xsl:copy-of, xsl:number, xsl:perform-sort, xsl:analyze-string, xsl:function, xsl:key, xsl:import / xsl:include, xsl:result-document, xsl:source-document, xsl:try/xsl:catch, xsl:fork, xsl:namespace, xsl:fallback, xsl:where-populated, xsl:mode with on-no-match="shallow-copy", Text Value Templates (expand-text), fn:serialize(), and JSON processing via json-to-xml() / xml-to-json().

Over 5000 tests from the W3C XSLT 3.0 conformance test suite pass (~34% of the ~14700 tests across ~260 test sets).

Not yet implemented

• Streaming (xsl:stream, streamable modes)
• Schema-aware processing (schema validation, typed values)
• Full package support (xsl:use-package, xsl:accept, xsl:expose)
• xsl:iterate, xsl:merge, xsl:evaluate
• namespace:: axis
• Unicode Collation Algorithm (sort/compare uses codepoint order)
• Date/duration arithmetic (partial)

See the full documentation for details on supported features.

Installation

go install github.com/speedata/goxslt/cmd/goxslt@latest

Usage

goxslt -s source.xml -t stylesheet.xsl [-o output.xml] [param=value ...]

Library Usage

sourceDoc, _ := goxml.Parse(os.Stdin)
ss, _ := goxslt.CompileFile("style.xsl")
result, _ := goxslt.Transform(ss, sourceDoc)
fmt.Print(goxslt.SerializeWithOutput(result.Document, result.Output))

See pkg.go.dev for the full Go API.

Documentation

The full reference for supported XSLT instructions, functions, modes, and features is at:

https://doc.speedata.de/goxml/

Testing

go test ./...                  # unit tests + whitelisted W3C tests (~1s)

W3C XSLT 3.0 conformance suite

git clone https://github.com/w3c/xslt30-test.git testdata/w3c
go test -v -run TestW3C ./...  # run whitelisted tests (~1s)

# full survey across all ~14700 tests (~90s)
W3C_SURVEY=1 go test -v -run TestW3CSurvey -timeout 3600s ./...

License

BSD-3-Clause — see LICENSE.