批處理文件刪除段落，如果它包含某些單詞

Question

我需要刪除.txt文件中的一個段落，但僅當它包含字符串'Type：Certain'時。有兩條新線，'^ **'，以及每段之間的兩條新線。我發現很多關於如何刪除一行的信息，如果它包含某個單詞，但沒有關於某個段落。

Answer 1

如果您不害怕正則表達式，則可以使用JREPL.BAT來解決此問題。

您的規格有點不清楚。根據我佈局的理解，我只能假設第2，第6和8應該在下面的示例文本保存：

的test.txt

This is paragraph 1 that should be deleted 
xxxx Type: Certain xxxx 
End of paragraph 1 

^** 

This is paragraph 2 that should be preserved 
End of paragraph 2 

^** 

This is paragraph 3 Type: 
Certain That should be deleted 
End of paragraph 3 

^** 

This is paragraph 4 
Type: Certain That should be deleted 
End of paragraph 4 

^** 

Type: Certain 

^** 

This is paragrpah 6 that should be preserved 
End of paragraph 6 

^** 

This is paragraph 7 that should be deleted 
Type: Certain. End of paragraph 7 

^** 

This is paragraph 8 that should be preserved 

^** 

This is paragraph 9 that should be deleted 
Type: Certain 

下面是使用JREPL解決方案.BAT

可通過分別更改p和d的定義來修改段落分隔符和刪除觸發器的正則表達式搜索。

@echo off 
setlocal 
set "p=\r?\n\r?\n\^\*\*\r?\n\r?\n" %= Paragraph delimiter =% 
set "d=\bType:\s+Certain\b"   %= Text that indicates deletion =% 

set "find=(%p%)?(?:[\s\S](?!%p%))*%d%[\s\S]*?(?:(%p%)|(?![\s\S]))" 
set "repl=$txt=($1&&$2)?$1:''" 

call jrepl find repl /m /v /jq /f test.txt /o - 

這裏是該文件的段落已被刪除後：

This is paragraph 2 that should be preserved 
End of paragraph 2 

^** 

This is paragrpah 6 that should be preserved 
End of paragraph 6 

^** 

This is paragraph 8 that should be preserved 

在第一或最後一段Type: Certain的可能性問題有點複雜。