BuildExcerpt makes a short plaintext preview from markdown.
(body string)
| 164 | |
| 165 | // BuildExcerpt makes a short plaintext preview from markdown. |
| 166 | func BuildExcerpt(body string) string { |
| 167 | withoutFront := body |
| 168 | if strings.HasPrefix(body, "---\n") { |
| 169 | withoutFront = frontmatterRe.ReplaceAllString(body, "") |
| 170 | } |
| 171 | text := stripCodeContent(withoutFront) |
| 172 | if strings.Contains(text, "](") { |
| 173 | text = imageMdRe.ReplaceAllString(text, " ") |
| 174 | text = mdLinkRe.ReplaceAllString(text, "$1") |
| 175 | } |
| 176 | if strings.Contains(text, "![[") { |
| 177 | text = mdEmbedAltRe.ReplaceAllStringFunc(text, func(s string) string { |
| 178 | m := mdEmbedAltRe.FindStringSubmatch(s) |
| 179 | if len(m) >= 3 && m[2] != "" { |
| 180 | return m[2] |
| 181 | } |
| 182 | if len(m) >= 2 { |
| 183 | return m[1] |
| 184 | } |
| 185 | return "" |
| 186 | }) |
| 187 | } |
| 188 | if strings.Contains(text, "[[") { |
| 189 | text = mdWikiAltRe.ReplaceAllStringFunc(text, func(s string) string { |
| 190 | m := mdWikiAltRe.FindStringSubmatch(s) |
| 191 | if len(m) >= 3 && m[2] != "" { |
| 192 | return m[2] |
| 193 | } |
| 194 | if len(m) >= 2 { |
| 195 | return m[1] |
| 196 | } |
| 197 | return "" |
| 198 | }) |
| 199 | } |
| 200 | if strings.Contains(text, "#") { |
| 201 | text = headingRe.ReplaceAllString(text, "") |
| 202 | } |
| 203 | if strings.ContainsAny(text, "*_~>") { |
| 204 | text = markupTrimRe.ReplaceAllString(text, "") |
| 205 | } |
| 206 | text = wsCollapseRe.ReplaceAllString(text, " ") |
| 207 | text = strings.TrimSpace(text) |
| 208 | if len(text) > 220 { |
| 209 | text = text[:220] |
| 210 | } |
| 211 | return text |
| 212 | } |
| 213 | |
| 214 | func localAssetTargetKind(target string) string { |
| 215 | clean := target |
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