Snobol4 语言 实战 HTML 音频路径解析实战

Snobol4 语言实战：HTML 音频路径解析实战

Snobol4 是一种古老的编程语言，最初在1962年由Calvin Mooers 设计。它以其独特的文本处理能力而闻名，特别适合于文本搜索和替换等任务。尽管 Snobol4 在现代编程语言中并不常见，但它在某些特定领域，如文本处理和数据处理，仍然有其独特的应用价值。

本文将围绕 Snobol4 语言，探讨如何实现 HTML 音频路径解析。我们将通过一个具体的实例，展示如何使用 Snobol4 读取 HTML 文档，提取音频路径，并将其输出。

Snobol4 简介

Snobol4 是 Snobol 系列语言的第四个版本，它继承了 Snobol3 的语法和功能，并增加了一些新的特性。Snobol4 的主要特点包括：

- 强大的文本处理能力
- 简洁的语法
- 高效的运行速度

Snobol4 使用符号表来存储变量和函数，这使得它在处理文本时非常高效。

HTML 音频路径解析需求分析

在 Web 开发中，HTML 音频标签（``）用于嵌入音频文件。音频路径通常包含在标签的 `src` 属性中。我们的目标是使用 Snobol4 读取 HTML 文档，提取所有音频路径，并输出到一个列表中。

实现步骤

1. 准备 HTML 文档

我们需要一个包含音频路径的 HTML 文档。以下是一个简单的示例：

html

Audio Example

Your browser does not support the audio element.

Your browser does not support the audio element.

2. 编写 Snobol4 代码

接下来，我们将编写 Snobol4 代码来解析这个 HTML 文档。

```snobol
:IN FILE
:OUT LIST

VAR audio_paths

READ FILE INTO html_text

WHILE html_text > 0 DO
IF html_text = ' 0 DO
IF tag = 'src="' THEN
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