powershell 就地删除文本文件中的双引号，其中行以双引号+一些其他文本开头

Question

仅当行以“https”开头时，我才需要删除文本文件中的双引号。 文件内容是这样的：

...
    "bla, bla, bla"
    "https://example.com"
    "bar, bar, bar"
...

我必须匹配“ https://example.com ”，删除两个双引号，在其他行中保留双引号，而不是 set-content ......

我尝试了很多方法，但我被卡住了，因为我不知道如何处理正则表达式中的双引号，或者在“if”或“where”语句中声明过滤器，而不是替换文本......

最新尝试：

$TextFile = Get-Content "e:\file.txt"
foreach ($Line in $TextFile) {if ($Line.StartsWith('"https')) { $line.trim('"')} | Set-Content $TextFile

但不起作用...

我已经阅读了这篇文章和这篇文章，但我不明白如何让这些解决方案满足我的需求..

有人能帮助我吗？

Answer 1

使用-Raw开关将文本文件作为单个字符串读取，然后进行正则表达式替换：

(Get-Content "e:\file.txt" -Raw) -replace '(\s*)"(https:[^"]+)"','$1$2'

如果需要用新内容覆盖文本文件，append

| Set-Content -Path "e:\file.txt" -Force

到上面。

Output：

...
    "bla, bla, bla"
    https://example.com
    "bar, bar, bar"
...

正则表达式详细信息：

(             Match the regular expression below and capture its match into backreference number 1
   \s         Match a single character that is a “whitespace character” (spaces, tabs, line breaks, etc.)
      *       Between zero and unlimited times, as many times as possible, giving back as needed (greedy)
)
"             Match the character “"” literally
(             Match the regular expression below and capture its match into backreference number 2
   https:     Match the characters “https:” literally
   [^"]       Match any character that is NOT a “"”
      +       Between one and unlimited times, as many times as possible, giving back as needed (greedy)
)
"             Match the character “"” literally

Answer 2

要获取不带双引号的“https://”字符串：

$content = Get-Content PATH TO YOUR FILE

foreach( $line in $content ) {
    if( $line -match "(`"https:\/\/)" ) {
        $line -replace '"',''
    }
}