Snobol4 语言 实战 XML 注释节点去除实战

Snobol4阿木 发布于 11 天前 4 次阅读

Snobol4【1】 语言实战：XML【2】 注释节点【3】去除实战

Snobol4 是一种古老的编程语言，它以其简洁的语法和强大的字符串处理【4】能力而闻名。尽管在现代编程中不常见，但Snobol4 在处理文本和字符串方面仍然有其独特的优势。本文将围绕Snobol4 语言，通过一个实际的XML注释节点去除实战，展示如何使用Snobol4 来处理XML数据。

XML 注释节点去除背景

在XML文档中，注释节点通常以 `` 结束。这些注释节点对于文档的维护和说明非常有用，但在某些情况下，我们可能需要去除这些注释节点，以便进行进一步的处理或分析。例如，在生成XML文档的文本表示【5】时，我们可能希望去除注释以提高可读性。

Snobol4 简介

Snobol4 是一种高级编程语言【6】，由David J. Farber【7】、Ralph E. Griswold【8】 和 Ivan P. Polonsky【9】 在1962年设计。它以其强大的字符串处理能力而著称，特别适合于文本处理任务。Snobol4 的语法简洁，易于理解，但同时也非常强大。

实战：XML 注释节点去除

1. XML 文档结构

我们需要一个XML文档作为示例。以下是一个包含注释节点的简单XML文档：

xml

Some content
More content

2. Snobol4 代码实现

接下来，我们将使用Snobol4 编写一个程序【10】来去除上述XML文档中的注释节点。

```snobol
:in 'xml.txt' :out 'output.txt'
:var line, pos, ch, comment, element

'line' 'pos' 'ch' 'comment' 'element' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos' 'ch' 'line' 'pos