Powershell - 从字符串创建数组 - 用新行分隔文本块

发布于 2025-01-13 17:36:21 字数 525 浏览 0 评论 0原文

我的变量中有一个字符串：

$Test = @"
Paragraph 1: some paragraph text
some paragraph text some paragraph text
some paragraph text some paragraph text

Paragraph 2: some paragraph text
some paragraph text some paragraph text
some paragraph text some paragraph text

Paragraph 3: some paragraph text
some paragraph text some paragraph text
some paragraph text some paragraph text
"@

可能有未确定的段落数。

段落始终由换行符分隔。

我需要将每个段落文本块分隔成一个新的数组变量。

示例：

$Array[1] 应该给我第 2 段的整个文本块。

谢谢！

原文

I have a string in a variable:

$Test = @"
Paragraph 1: some paragraph text
some paragraph text some paragraph text
some paragraph text some paragraph text

Paragraph 2: some paragraph text
some paragraph text some paragraph text
some paragraph text some paragraph text

Paragraph 3: some paragraph text
some paragraph text some paragraph text
some paragraph text some paragraph text
"@

There might be an undetermined number of paragraphs.

The paragraphs are always separated by a new line.

I need each paragraph block of text separated into a new array variable.

Example:

$Array[1] should give me the entire block of text of Paragraph 2.

Thank you!

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树深时见影 2025-01-20 17:36:21

由两个或多个连续换行符分割：

# Pipe to 
#  | ForEach-Object { "[$_]" } 
# to visualize the resulting array elements.
$test -split '(?:\r?\n){2,}'

有关传递到 -split 运算符及其实验能力，请参阅此 regex101.com 页面。

注意：

如果您可以假设输入字符串中仅存在 Unix 格式的 LF (\n) 换行符，则可以将正则表达式简化为 '\n{2,} ' - 上面的正则表达式可以处理 LF 和 Windows CRLF (\r\n) 换行符。
如果最后一段恰好包含您想要从数组中删除的单个尾随换行符（如果您使用 Get-Content -Raw 完整读取文本文件，通常会发生这种情况），使用：
```
# 注意：如果您需要保留尾随 *非换行符* 空格，
# 使用 .TrimEnd("`r", "`n") 代替。
($test -split '(?:\r?\n){2,}').TrimEnd()
```

Split by two or more consecutive newlines:

# Pipe to 
#  | ForEach-Object { "[$_]" } 
# to visualize the resulting array elements.
$test -split '(?:\r?\n){2,}'

For an explanation of the regex passed to the -split operator and the ability to experiment with it, see this regex101.com page.

Note:

If you can assume that only Unix-format LF (\n) newlines are present in your input string, you can simplify the regex to '\n{2,}' - the regex above handles both LF and Windows CRLF (\r\n) newlines.
If the last paragraph happens to contain a single trailing newline (as would typically happen if you read a text file in full with Get-Content -Raw) that you want to eliminate from the array, use:
```
# Note: If you need to preserve trailing *non-newline* whitespace,
#       use .TrimEnd("`r", "`n") instead.
($test -split '(?:\r?\n){2,}').TrimEnd()
```

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