// Convert returns a latex text body. It takes the html source and the url
// of the source to create a goquery document and work with that.
// Additionally, a codeLanguage to use as highlight for code blocks can be
// provided. A codeLanguage can be an empty string.
// When excludeFigures is true, figures are not included in the latex
// source.
func Convert(htmlStr string, articleUrl string, codeLang string, excludeFigures bool) string {
doc := generateDoc(htmlStr, articleUrl)
escapeDocLatexMetaChars(doc)
convertDocUniCode(doc)
unwrapDrop(doc)
// wrap all html environments by corresponding latex environments.
convertImages(doc, excludeFigures)
convertVideos(doc)
convertCode(doc, codeLang) // code blocks include latex metachars {,}
convertFootnotes(doc)
convertLinks(doc)
convertHeading(doc)
convertList(doc)
convertQuotations(doc)
// inside tex macros transform <br> linebreaks with \\ so they are handled
// gracefully by the text engine
wrapElementsAndDeleteLinebreak(doc, "em", "\\emph{", "}")
wrapElementsAndDeleteLinebreak(doc, "i", "\\textit{", "}")
wrapElementsAndDeleteLinebreak(doc, "b", "\\textbf{", "}")
wrapElementsAndDeleteLinebreak(doc, "strong", "\\textbf{", "}")
wrapElementsAndDeleteLinebreak(doc, "u", "\\underline{", "}")
wrapElementsAndDeleteLinebreak(doc, "sup", "\\textsuperscript{", "}")
wrapElementsAndDeleteLinebreak(doc, "sub", "\\textsubscript{", "}")
wrapElementsAndDeleteLinebreak(doc, "strike", "\\sout{", "}")
wrapElementsAndDeleteLinebreak(doc, "span[style=\"text-decoration: line-through\"]", "\\sout{", "}")
// outside tex macros use double line break to separate paragraphs etc
wrapElementsAndKeepLinebreak(doc, "p", "\n\n", "")
wrapElementsAndKeepLinebreak(doc, "br", "", "\n\n")
// When .Text() is called, the latex code survives.
t := doc.Text()
t = convertInlineMath(t)
t = strtrans.LinebreaksToTwoLinebreaks(t)
t = strdel.EmptyBrackets(t)
t = deleteSpaceBeforeClosingBrackets(t)
//Unicode(&t)
return t
/*
sample := " talking to Amazon’s Web services"
fmt.Printf("%+q\n", sample)
h, _ := doc.Html()
fmt.Println(t)
*/
}
func (a Article) Text() string {
//
// Titel -- Subtitle
// =================
// By Authors
//
// Abstract
//
// ---------------------
// Content
// ---------------------
//
// From Journal on Date
// Source: Url
// Title
title := a.Title
title += "\n"
title += strings.Repeat("=", len(title)-1)
title += "\n"
// Authors
authors := "By "
for i, auth := range a.Authors {
authors += auth
if i == len(a.Authors)-1 {
authors += "\n"
break
}
authors += " and "
}
authors += "\n\n"
// Abstract
var abstract string
if a.Abstract != "" {
abstract = a.Abstract + "\n\n"
}
// Content
tmp := "From " + a.Journal + " on " + a.Date
content := strings.Repeat("-", len(tmp)) + "\n"
content += a.PlainTextContent() + "\n\n"
content += strings.Repeat("-", len(tmp)) + "\n\n"
// Reference
ref := "From " + a.Journal + " on " + a.Date + "\n"
ref += "Source: " + a.Url
return strtrans.LinebreaksToTwoLinebreaks(title + authors + abstract + content + ref)
}