1 files changed, 134 insertions, 0 deletions
diff --git a/packages/markdown-it-14.1.0/lib/rules_core/linkify.mjs b/packages/markdown-it-14.1.0/lib/rules_core/linkify.mjs
new file mode 100644
index 0000000..a225280
--- /dev/null
+++ b/packages/markdown-it-14.1.0/lib/rules_core/linkify.mjs
@@ -0,0 +1,134 @@
+// Replace link-like texts with link nodes.
+//
+// Currently restricted by `md.validateLink()` to http/https/ftp
+//
+
+import { arrayReplaceAt } from '../common/utils.mjs'
+
+function isLinkOpen (str) {
+  return /^<a[>\s]/i.test(str)
+}
+function isLinkClose (str) {
+  return /^<\/a\s*>/i.test(str)
+}
+
+export default function linkify (state) {
+  const blockTokens = state.tokens
+
+  if (!state.md.options.linkify) { return }
+
+  for (let j = 0, l = blockTokens.length; j < l; j++) {
+    if (blockTokens[j].type !== 'inline' ||
+        !state.md.linkify.pretest(blockTokens[j].content)) {
+      continue
+    }
+
+    let tokens = blockTokens[j].children
+
+    let htmlLinkLevel = 0
+
+    // We scan from the end, to keep position when new tags added.
+    // Use reversed logic in links start/end match
+    for (let i = tokens.length - 1; i >= 0; i--) {
+      const currentToken = tokens[i]
+
+      // Skip content of markdown links
+      if (currentToken.type === 'link_close') {
+        i--
+        while (tokens[i].level !== currentToken.level && tokens[i].type !== 'link_open') {
+          i--
+        }
+        continue
+      }
+
+      // Skip content of html tag links
+      if (currentToken.type === 'html_inline') {
+        if (isLinkOpen(currentToken.content) && htmlLinkLevel > 0) {
+          htmlLinkLevel--
+        }
+        if (isLinkClose(currentToken.content)) {
+          htmlLinkLevel++
+        }
+      }
+      if (htmlLinkLevel > 0) { continue }
+
+      if (currentToken.type === 'text' && state.md.linkify.test(currentToken.content)) {
+        const text = currentToken.content
+        let links = state.md.linkify.match(text)
+
+        // Now split string to nodes
+        const nodes = []
+        let level = currentToken.level
+        let lastPos = 0
+
+        // forbid escape sequence at the start of the string,
+        // this avoids http\://example.com/ from being linkified as
+        // http:<a href="//example.com/">//example.com/</a>
+        if (links.length > 0 &&
+            links[0].index === 0 &&
+            i > 0 &&
+            tokens[i - 1].type === 'text_special') {
+          links = links.slice(1)
+        }
+
+        for (let ln = 0; ln < links.length; ln++) {
+          const url = links[ln].url
+          const fullUrl = state.md.normalizeLink(url)
+          if (!state.md.validateLink(fullUrl)) { continue }
+
+          let urlText = links[ln].text
+
+          // Linkifier might send raw hostnames like "example.com", where url
+          // starts with domain name. So we prepend http:// in those cases,
+          // and remove it afterwards.
+          //
+          if (!links[ln].schema) {
+            urlText = state.md.normalizeLinkText('http://' + urlText).replace(/^http:\/\//, '')
+          } else if (links[ln].schema === 'mailto:' && !/^mailto:/i.test(urlText)) {
+            urlText = state.md.normalizeLinkText('mailto:' + urlText).replace(/^mailto:/, '')
+          } else {
+            urlText = state.md.normalizeLinkText(urlText)
+          }
+
+          const pos = links[ln].index
+
+          if (pos > lastPos) {
+            const token   = new state.Token('text', '', 0)
+            token.content = text.slice(lastPos, pos)
+            token.level   = level
+            nodes.push(token)
+          }
+
+          const token_o   = new state.Token('link_open', 'a', 1)
+          token_o.attrs   = [['href', fullUrl]]
+          token_o.level   = level++
+          token_o.markup  = 'linkify'
+          token_o.info    = 'auto'
+          nodes.push(token_o)
+
+          const token_t   = new state.Token('text', '', 0)
+          token_t.content = urlText
+          token_t.level   = level
+          nodes.push(token_t)
+
+          const token_c   = new state.Token('link_close', 'a', -1)
+          token_c.level   = --level
+          token_c.markup  = 'linkify'
+          token_c.info    = 'auto'
+          nodes.push(token_c)
+
+          lastPos = links[ln].lastIndex
+        }
+        if (lastPos < text.length) {
+          const token   = new state.Token('text', '', 0)
+          token.content = text.slice(lastPos)
+          token.level   = level
+          nodes.push(token)
+        }
+
+        // replace current node
+        blockTokens[j].children = tokens = arrayReplaceAt(tokens, i, nodes)
+      }
+    }
+  }
+}