The Omega component provides the tools to translate and parse information from a variety of formats into the raw text required by Xapian so it can be indexed.
Omega组件提供了一些工具来将不同格式的信息转化并解析成xapian需要的原始格式以便它可以被索引。
A lexer is a software component that divides text strings into individual words, or tokens, so that the individual words can be indexed.
lexer是一个能将文本字符串分成单个命令，或者标记的软件组分，这样使得单个命令可以被检索到。
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