Snobol4 语言 开发文本格式化与美化工具

Snobol4^【1】 语言：文本格式化^【2】与美化工具^【3】的开发

Snobol4 是一种古老的编程语言，最初由 Calvin Mooers 在1962年设计，主要用于文本处理。尽管 Snobol4 在现代编程语言中并不常见，但其强大的文本处理能力使其在文本格式化和美化方面具有独特的优势。本文将探讨如何使用 Snobol4 语言开发一个文本格式化与美化工具，并分析其技术实现。

Snobol4 语言简介

Snobol4 是一种基于字符串的编程语言，具有以下特点：

- 字符串处理能力：Snobol4 专为文本处理而设计，具有强大的字符串操作功能。
- 模式匹配^【4】：Snobol4 支持模式匹配，可以方便地处理文本中的特定模式。
- 流控制^【5】：Snobol4 提供了丰富的流控制结构，如循环、条件语句等。

文本格式化与美化工具的需求分析

在开发文本格式化与美化工具时，我们需要考虑以下需求：

- 支持多种文本格式：工具应能够处理不同格式的文本，如纯文本、Markdown^【6】、HTML^【7】 等。
- 格式化功能：包括文本缩进^【8】、行宽限制^【9】、段落分隔等。
- 美化功能：包括字体、颜色、背景等样式设置。
- 用户界面^【10】：提供友好的用户界面，方便用户进行操作。

Snobol4 语言在文本格式化与美化工具中的应用

以下是一个简单的 Snobol4 程序示例，用于实现文本缩进和行宽限制的功能。

```snobol
:input
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input line
input