文件名包含某些文本

Question

我知道这是一个新问题,但我找不到任何东西.我认为问题可能与变量类型问题有关？

我正在尝试查看文件名,看看文件名中是否包含pattern1.如果是,则将模式文本替换为"TEST".

现在它没有错误,但它跳过了IF,我确实有目录中的模式文件.

无法插入实际代码,所以这里是一个示例

$pattern1 = "January"
$pattern2 = "December 31"
$path = "C:\Users\...\METRICS-TEST\Metrics 2014\January 2014 Client Metrics"

$search_results = Get-ChildItem -Path $path | Where-Object { ((! $_.PSIsContainer))}
foreach ($file in $search_results) {
    if($file.Name -contains $pattern1){
        $new_name = $file.Name -replace $pattern1, "TEST1"
        Rename-Item -Path $file.FullName -NewName $new_name
    }else{
        $new_name = $file.Name -replace $pattern2, "TEST2"
        Rename-Item -Path $file.FullName -NewName $new_name
    }
}

Answer 1

-contains 处理集合,而不是字符串.

对于字符串,您需要-match(用于RegEx匹配)或-like简单的通配符匹配:

$file.name -match $pattern1
$file.name -like "*$pattern1*"

-contains 如果你有一个字符串数组并想知道它是否包含一个或多个特定字符串的副本,那将是合适的:

$Strings = "abc","def","ghi","jkl"

# This evaluates to true
$Strings -contains "abc" 

# This evaluates to false
$Strings -contains "ab"

Answer 2

整个问题是您使用-Co​​ntains应该使用-Match.试试这个,如果您有更多条件要添加,它很容易扩展:

$pattern1 = "January"
$pattern2 = "December 31"
$path = "C:\Users\...\METRICS-TEST\Metrics 2014\January 2014 Client Metrics"

Switch(Get-ChildItem -Path $path){
    {$_.Name -match $pattern1}{$new_name = $_.Name -replace $pattern1, "TEST1"
        Rename-Item -Path $_.FullName -NewName $new_name}
    {$_.Name -match $pattern2}{$new_name = $_.Name -replace $pattern2, "TEST2"
        Rename-Item -Path $_.FullName -NewName $new_name}
}