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allow writing of user-specified <meta.../> tags to document header #541

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allow writing of user-specified <meta.../> tags to document header #541

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269dc6e
allow writing of user-specified <meta.../> tags to document header
gbmor Apr 23, 2019
3df9bbf
changed from map nil check to length check
gbmor Apr 24, 2019
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17 changes: 17 additions & 0 deletions html.go
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Original file line number Diff line number Diff line change
Expand Up @@ -82,6 +82,13 @@ type Html struct {
title string // document title
css string // optional css file url (used with HTML_COMPLETE_PAGE)

// The optional 'meta' map holds additional meta tags to
// place into the final document's header.
// Format:
// key: name="author"
// val: foo barrington
meta map[string]string

parameters HtmlRendererParameters

// table of contents data
Expand Down Expand Up @@ -131,6 +138,8 @@ func HtmlRendererWithParameters(flags int, title string,
css: css,
parameters: renderParameters,

meta: make(map[string]string),

headerCount: 0,
currentLevel: 0,
toc: new(bytes.Buffer),
Expand Down Expand Up @@ -685,6 +694,14 @@ func (options *Html) DocumentHeader(out *bytes.Buffer) {
out.WriteString(" <meta charset=\"utf-8\"")
out.WriteString(ending)
out.WriteString(">\n")
// plug the user-specified <meta.../> tags
if len(options.meta) > 0 {
for k, v := range options.meta {
out.WriteString(" <meta " + k + " content=\"" + v + "\"")
out.WriteString(ending)
out.WriteString(">\n")
}
}
if options.css != "" {
out.WriteString(" <link rel=\"stylesheet\" type=\"text/css\" href=\"")
attrEscape(out, []byte(options.css))
Expand Down