Snobol4【1】 语言实战：实现日志分类【2】与检索系统
Snobol4 是一种古老的编程语言，由 David J. Farber 和 Ralph E. Griswold 在 1962 年设计。它以其简洁的语法和强大的字符串处理能力而闻名。尽管 Snobol4 在现代编程语言中并不常见，但它在处理文本和字符串方面仍然有其独特的优势。本文将探讨如何使用 Snobol4 语言实现一个简单的日志分类与检索系统。
系统需求
我们的日志分类与检索系统需要满足以下需求：
1. 日志分类：根据日志内容将日志分为不同的类别。
2. 日志检索【3】：根据关键词或条件检索特定类别的日志。
3. 用户界面【4】：提供一个简单的命令行界面【5】供用户输入查询。
系统设计
数据结构【6】
我们将使用以下数据结构来存储日志和分类信息：
- 日志列表【7】：一个包含所有日志的列表，每个日志是一个字符串。
- 分类字典【8】：一个字典，键是分类名称，值是包含该分类日志的列表。
功能模块
1. 日志分类器【9】：分析日志内容，将其分类到相应的类别。
2. 检索器【10】：根据用户输入的关键词或条件，从分类字典中检索日志。
3. 用户界面：提供一个简单的命令行界面，允许用户输入查询并显示结果。
Snobol4 代码实现
以下是使用 Snobol4 实现日志分类与检索系统的代码示例：
```snobol
:LOGS
'log1.txt
'log2.txt
'log3.txt
'log4.txt
'log5.txt
'log6.txt
'log7.txt
'log8.txt
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Comments NOTHING