Snobol4 语言 实战 开发数据解析脚本实战

Snobol4amuwap 发布于 3 天前 2 次阅读

Snobol4【1】 语言实战：开发数据解析【2】脚本【3】实战

Snobol4 是一种古老的编程语言，最初在1962年由Calvin Mooers 设计。尽管它已经不像其他现代编程语言那样流行，但Snobol4 在数据处理和文本处理领域仍然有其独特的应用价值。本文将围绕 Snobol4 语言，通过一个实际的数据解析脚本开发案例，探讨如何使用 Snobol4 进行数据处理。

Snobol4 简介

Snobol4 是一种基于字符串处理【4】的编程语言，特别适合于文本处理和数据处理。它具有以下特点：

- 字符串处理能力强：Snobol4 提供了丰富的字符串操作函数，如搜索、替换、分割等。
- 模式匹配【5】：Snobol4 支持模式匹配，可以方便地进行文本搜索和替换。
- 紧凑的语法：Snobol4 的语法相对紧凑，易于阅读和理解。

数据解析脚本开发

1. 需求分析【6】

假设我们需要解析一个包含以下格式的文本文件：


Name: John Doe
Age: 30
City: New York

我们需要从文件中提取出姓名、年龄和城市信息。

2. 设计脚本

根据需求，我们可以设计以下 Snobol4 脚本：

```snobol
:parse
'Name: ' !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !> "Name: " !>