输入文件是固定宽度的 txt 文件。我的客户通常在 Excel 中打开它并手动指定分栏符。我希望用逗号替换某些空格,以便我可以解析为 CSV 并保存为 XLS 或其他格式。
$columBreaks = 20, 35, 50, 80, 100, 111, 131, 158, 161, 167, 183
[array]::Reverse($columBreaks) #too lazy to re-write array after finding out I need to iterate in reverse
$files = get-childitem ./ |where-object {$_.Name -like "FileFormat*.txt"}
foreach($file in $files)
{
$name = $file.Name.split(".")
$csvFile = $name[0]+".csv"
if (!(get-childitem ./ |where-object {$_.Name -like $csvFile})) #check whether file has been processed
{
$text = (gc $file)
foreach ($line in $text)
{
foreach ($pos in $columBreaks)
{
#$line.Substring($char-1,3).replace(" ", ",")
$line = $line.Insert($pos,",")
#out-file -append?
}
}
}
#set-content?
}
那么将这些内容写出来最有效的方法是什么?我曾希望使用 set-content,但我认为这是不可能的,因为我们正在逐行处理,所以我认为我要么必须为 set-content 构建一个行数组,要么使用写出 -为每次迭代追加。有没有更有效的方法来做到这一点?
最佳答案
Set-Content 通过一些小的调整应该可以正常工作。这是它应该如何工作的示例(这是外部 foreach 循环中的所有内容):
$csvFile = $file.BaseName
if (!(get-childitem ./ |where-object {$_.Name -like $csvFile})) #check whether file has been processed
{
(gc $file | foreach {
$_.Insert($columBreaks[0],",").Insert($columBreaks[1],",").Insert($columBreaks[2],",").`
Insert($columBreaks[3],",").Insert($columBreaks[4],",").Insert($columBreaks[5],",").`
Insert($columBreaks[6],",").Insert($columBreaks[7],",").Insert($columBreaks[8],",").`
Insert($columBreaks[9],",").Insert($columBreaks[10],",")
}) | set-content $csvFile #note parenthesis around everything that gets piped to set-content
}
顺便说一句,您可以使用 $file.BaseName
获取不带扩展名的文件名,而不是在“.”上拆分文件名:
$csvFile = $file.BaseName + ".csv"
关于powershell - 将固定宽度的 txt 文件转换为 CSV/set-content 或 out-file -append?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/39897926/