feat: complete grounded digital avatar chat experience

2026-08-19 14:21:56 +08:00
parent 07d4a21379
commit 4a2d788e85
16 changed files with 1013 additions and 193 deletions
@@ -0,0 +1,74 @@
+const markerRunLength = (characters, start, marker) => {
+  let length = 0
+  while (characters[start + length] === marker) length += 1
+  return length
+}
+
+export const renderChatMarkdownCharacters = (value) => {
+  const characters = Array.isArray(value) ? value : Array.from(String(value || ''))
+  const output = []
+  let bold = false
+  let italic = false
+  let code = false
+  let heading = false
+  let lineStart = true
+
+  const push = (text, key) => {
+    output.push({
+      text,
+      key,
+      bold,
+      italic,
+      code,
+      heading,
+      newline: text === '\n',
+    })
+  }
+
+  for (let index = 0; index < characters.length; index += 1) {
+    const character = characters[index]
+
+    if (lineStart && character === '#') {
+      const length = markerRunLength(characters, index, '#')
+      if (characters[index + length] === ' ') {
+        heading = true
+        index += length
+        continue
+      }
+    }
+
+    if (lineStart && (character === '-' || character === '*') && characters[index + 1] === ' ') {
+      push('•', `${index}-bullet`)
+      push(' ', `${index}-space`)
+      index += 1
+      lineStart = false
+      continue
+    }
+
+    if (!code && (character === '*' || character === '_')) {
+      const length = markerRunLength(characters, index, character)
+      if (length >= 2) {
+        bold = !bold
+        index += length - 1
+        continue
+      }
+      italic = !italic
+      continue
+    }
+
+    if (character === '`') {
+      code = !code
+      continue
+    }
+
+    push(character, index)
+    if (character === '\n') {
+      heading = false
+      lineStart = true
+    } else {
+      lineStart = false
+    }
+  }
+
+  return output
+}