Function findAllMatches

src/renderer/src/utils/searchUtils.ts:46–80

(
  messages: ChatMessage[],
  query: string,
  options: SearchOptions
)

 * 在消息列表中查找所有匹配项
 */
export function findAllMatches(
  messages: ChatMessage[],
  query: string,
  options: SearchOptions
): SearchMatch[] {
  const pattern = createSearchPattern(query, options)
  if (!pattern) return []

  const matches: SearchMatch[] = []
  let globalIndex = 0

  for (const message of messages) {
    const content = message.content
    let match: RegExpExecArray | null

    // 重置 lastIndex
    pattern.lastIndex = 0

    while ((match = pattern.exec(content)) !== null) {
      matches.push({
        messageId: message.id,
        startOffset: match.index,
        endOffset: match.index + match[0].length,
        globalIndex: globalIndex++
      })

      // 防止零长度匹配导致无限循环
      if (match[0].length === 0) {
        pattern.lastIndex++
      }
    }
  }

  return matches
}

/**
 * 验证正则表达式是否有效