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package skate
import (
"regexp"
"strings"
)
var (
PatDOI = regexp.MustCompile(`10[.][0-9]{1,8}/[^ ]*[\w]`)
PatDOINoHyphen = regexp.MustCompile(`10[.][0-9]{1,8}/[^ -]*[\w]`)
PatArxivPDF = regexp.MustCompile(`https?://arxiv.org/pdf/([0-9]{4,4}[.][0-9]{1,8})(v[0-9]{1,2})?(.pdf)?`)
PatArxivAbs = regexp.MustCompile(`https?://arxiv.org/abs/([0-9]{4,4}[.][0-9]{1,8})(v[0-9]{1,2})?(.pdf)?`)
DOILinkPrefixes = []string{
"http://doi.org/",
"http://dx.doi.org/",
"https://doi.org/",
"https://dx.doi.org/",
}
)
// ParseUnstructured will in-place augment missing DOI, arxiv id and so on.
func ParseUnstructured(ref *Ref) error {
var (
uns = ref.Biblio.Unstructured
v string
vs []string
)
// Handle things like: 10.1111/j.1550-7408.1968.tb02138.x-BIB5|cit5,
// 10.1111/j.1558-5646.1997.tb02431.x-BIB0008|evo02431-cit-0008, ...
if strings.Contains(strings.ToLower(ref.Key), "-bib") && ref.Biblio.DOI == "" {
parts := strings.Split(strings.ToLower(ref.Key), "-bib")
ref.Biblio.DOI = parts[0]
}
// DOI
v = PatDOI.FindString(uns)
if v != "" && ref.Biblio.DOI == "" {
ref.Biblio.DOI = v
}
// DOI in Key
v = PatDOINoHyphen.FindString(ref.Key)
if v != "" && ref.Biblio.DOI == "" {
ref.Biblio.DOI = v
}
// DOI in URL
for _, prefix := range DOILinkPrefixes {
if ref.Biblio.DOI != "" && strings.HasPrefix(ref.Biblio.Url, prefix) {
ref.Biblio.DOI = strings.Replace(ref.Biblio.Url, prefix, "", -1)
}
}
// Another DOI pattern.
v = PatDOINoHyphen.FindString(ref.Key)
if v != "" && ref.Biblio.DOI == "" {
ref.Biblio.DOI = v
}
// Arxiv
vs = PatArxivPDF.FindStringSubmatch(uns)
if len(vs) != 0 && ref.Biblio.ArxivId == "" {
ref.Biblio.ArxivId = vs[1]
} else {
vs = PatArxivAbs.FindStringSubmatch(uns)
if len(vs) != 0 && ref.Biblio.ArxivId == "" {
ref.Biblio.ArxivId = vs[1]
}
}
// XXX: ISBN
ref.Biblio.Extra.ISBN = ParseIsbn(uns)
// Some more examples:
// - 2005 Sep;95(9):1545-51
// - Pattern Anal. Mach. Intell., 36(2):346-360, 2014. 4, 6, 7"
//
// There seems to be a number tiny of data issues; e.g. one off dates. Can
// we fix them here?
// Include: https://images.webofknowledge.com/images/help/WOS/J_abrvjt.html, ...
return nil
}
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