Snobol4 语言 实战 Markdown 标题转 HTML 标签实战

Snobol4amuwap 发布于 4 天前 2 次阅读


Snobol4【1】 语言实战:Markdown【2】 标题转 HTML【3】 标签

Snobol4 是一种古老的编程语言,它最初在1962年由David J. Farber、Peter J. Deutsch 和 James E.ystein 在贝尔实验室开发。尽管 Snobol4 在现代编程语言中并不常见,但它仍然具有一定的学术价值和历史意义。本文将围绕 Snobol4 语言,通过一个实际案例——Markdown 标题转 HTML 标签,来探讨 Snobol4 的编程技巧和应用。

Markdown 标题转 HTML 标签的背景

Markdown 是一种轻量级标记语言,常用于格式化文本。Markdown 中的标题通常使用 `` 符号来表示,例如:


一级标题
二级标题
三级标题

而 HTML 标签则用于网页内容的结构化,其中标题标签【4】为 `` 到 ``,分别对应从一级到六级标题。

将 Markdown 标题转换为 HTML 标签,可以帮助我们更好地将 Markdown 文档转换为网页内容,提高文档的可读性和可访问性。

Snobol4 语言简介

Snobol4 是 Snobol 系列编程语言的第四个版本,它以其强大的字符串处理【5】能力而闻名。Snobol4 提供了丰富的字符串操作函数,如搜索、替换、匹配等,这使得它在处理文本数据时非常高效。

下面是一个简单的 Snobol4 程序示例,用于打印 "Hello, World!":

snobol
PUT 'Hello, World!'
PUT !CR
PUT !LF

实战:Markdown 标题转 HTML 标签

1. 确定输入和输出格式

输入:Markdown 标题字符串,例如 ` 一级标题`
输出:对应的 HTML 标签字符串,例如 `一级标题`

2. 编写 Snobol4 程序

以下是一个 Snobol4 程序,用于将 Markdown 标题转换为 HTML 标签:

```snobol
PUT【6】 'Markdown标题字符串'
PUT !CR
PUT !LF

PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT ' '
PUT '