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package meta
import (
"bytes"
"errors"
"fmt"
"io"
"strconv"
"strings"
"github.com/mmcloughlin/addchain/internal/print"
)
// CheckCitable checks whether a citation can be generated for this built
// version.
func (p *Properties) CheckCitable() error {
if !p.IsRelease() {
return errors.New("cannot cite non-release version")
}
return nil
}
// WriteCitation writes BibTeX citation for the most recent release to the given
// writer.
func (p *Properties) WriteCitation(w io.Writer) error {
// Determine release time.
date, err := p.ReleaseTime()
if err != nil {
return fmt.Errorf("release date: %w", err)
}
// Use tabwriter for field alignment.
tw := print.NewTabWriter(w, 1, 4, 1, ' ', 0)
field := func(key, value string) { tw.Linef(" %s\t=\t%s,", key, value) }
str := func(key, value string) { field(key, "{"+value+"}") }
tw.Linef("@misc{%s,", p.Name)
str("title", p.Title())
str("author", "Michael B. McLoughlin")
field("year", strconv.Itoa(date.Year()))
field("month", strings.ToLower(date.Month().String()[:3]))
str("howpublished", "Repository \\url{"+p.RepositoryURL()+"}")
str("version", p.ReleaseVersion)
str("license", "BSD 3-Clause License")
str("doi", p.DOI)
str("url", p.DOIURL())
tw.Linef("}")
tw.Flush()
return tw.Error()
}
// Citation returns a BibTeX citation for the most recent release.
func (p *Properties) Citation() (string, error) {
buf := bytes.NewBuffer(nil)
if err := p.WriteCitation(buf); err != nil {
return "", err
}
return buf.String(), nil
}
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