PowerShell：读取PowerShell脚本日志
我已经开始在我的配置文件中使用开始记录来记录我通过shell执行的所有操作。
回顾发生了什么变化以及什么时候发生了变化将变得很有用。 我也开始将它用作文档的第一步。 我一直在评论在shell中完成的事情以供将来参考。
事实证明，棘手的是格式是文本文档的格式，并不像shell那样容易阅读（主要是错误，详细和警告颜色）。
我想知道是否有人以这种方式使用Transcript功能，并且有一个偏好查看器或解析日志文件以产生某种文档的脚本？
编辑：我很想知道为什么这个问题已经被投票了...
我相信解析一个成绩单来创建一个准确的格式化文档将是非常困难的。 但是，您可以使用控制台主机API来捕获（部分）屏幕缓冲区。
这篇Windows Powershell博客文章描述了这是如何工作的。
使用（修改后的）脚本（Get-ConsoleAsHtml.ps1）的一个简单方法是修改提示函数，以便缓冲区中所有尚未写入html脚本的行都会在每次提示函数时保存叫做。 第一个代码块是修改脚本的内容，第二个代码块显示了如何在配置文件中使用此脚本。
###########################################################################################################
# Get-ConsoleAsHtml.ps1
#
# The script captures console screen buffer up to the current cursor position and returns it in HTML format.
# (Jon Z: Added a startline parameter)
#
# Returns: UTF8-encoded string.
#
# Example:
#
# $htmlFileName = "$env:tempConsoleBuffer.html"
# .Get-ConsoleAsHtml 5 | out-file $htmlFileName -encoding UTF8
# $null = [System.Diagnostics.Process]::Start("$htmlFileName")
#
param (
$startline = 0
)
# Check the host name and exit if the host is not the Windows PowerShell console host.
if ($host.Name -ne 'ConsoleHost')
{
write-host -ForegroundColor Red "This script runs only in the console host. You cannot run this script in $($host.Name)."
exit -1
}
# The Windows PowerShell console host redefines DarkYellow and DarkMagenta colors and uses them as defaults.
# The redefined colors do not correspond to the color names used in HTML, so they need to be mapped to digital color codes.
#
function Normalize-HtmlColor ($color)
{
if ($color -eq "DarkYellow") { $color = "#eeedf0" }
if ($color -eq "DarkMagenta") { $color = "#012456" }
return $color
}
# Create an HTML span from text using the named console colors.
#
function Make-HtmlSpan ($text, $forecolor = "DarkYellow", $backcolor = "DarkMagenta")
{
$forecolor = Normalize-HtmlColor $forecolor
$backcolor = Normalize-HtmlColor $backcolor
# You can also add font-weight:bold tag here if you want a bold font in output.
return "<span style='font-family:Courier New;color:$forecolor;background:$backcolor'>$text</span>"
}
# Generate an HTML span and append it to HTML string builder
#
function Append-HtmlSpan
{
$spanText = $spanBuilder.ToString()
$spanHtml = Make-HtmlSpan $spanText $currentForegroundColor $currentBackgroundColor
$null = $htmlBuilder.Append($spanHtml)
}
# Append line break to HTML builder
#
function Append-HtmlBreak
{
$null = $htmlBuilder.Append("<br>")
}
# Initialize the HTML string builder.
$htmlBuilder = new-object system.text.stringbuilder
$null = $htmlBuilder.Append("<pre style='MARGIN: 0in 10pt 0in;line-height:normal';font-size:10pt>")
# Grab the console screen buffer contents using the Host console API.
$bufferWidth = $host.ui.rawui.BufferSize.Width
$bufferHeight = $host.ui.rawui.CursorPosition.Y
$rec = new-object System.Management.Automation.Host.Rectangle 0,0,($bufferWidth - 1),$bufferHeight
$buffer = $host.ui.rawui.GetBufferContents($rec)
# Iterate through the lines in the console buffer.
for($i = $startline; $i -lt $bufferHeight; $i++)
{
$spanBuilder = new-object system.text.stringbuilder
# Track the colors to identify spans of text with the same formatting.
$currentForegroundColor = $buffer[$i, 0].Foregroundcolor
$currentBackgroundColor = $buffer[$i, 0].Backgroundcolor
for($j = 0; $j -lt $bufferWidth; $j++)
{
$cell = $buffer[$i,$j]
# If the colors change, generate an HTML span and append it to the HTML string builder.
if (($cell.ForegroundColor -ne $currentForegroundColor) -or ($cell.BackgroundColor -ne $currentBackgroundColor))
{
Append-HtmlSpan
# Reset the span builder and colors.
$spanBuilder = new-object system.text.stringbuilder
$currentForegroundColor = $cell.Foregroundcolor
$currentBackgroundColor = $cell.Backgroundcolor
}
# Substitute characters which have special meaning in HTML.
switch ($cell.Character)
{
'>' { $htmlChar = '>' }
'<' { $htmlChar = '<' }
'&' { $htmlChar = '&' }
default
{
$htmlChar = $cell.Character
}
}
$null = $spanBuilder.Append($htmlChar)
}
Append-HtmlSpan
Append-HtmlBreak
}
# Append HTML ending tag.
$null = $htmlBuilder.Append("</pre>")
return $htmlBuilder.ToString()
配置文件示例：
############################################################################################################
# Microsoft.PowerShell_profile.ps1
#
$docpath = [environment]::GetFolderPath([environment+SpecialFolder]::MyDocuments)
$transcript = "$($docpath)PowerShell_transcript.$(get-date -f 'yyyyMMddHHmmss').html";
$global:lastloggedline = 0
function prompt {
&'D:ScriptsGet-ConsoleAsHtml.ps1' $global:lastloggedline | out-file $transcript -append;
$global:lastloggedline = $host.ui.rawui.cursorposition.Y
"PS $pwd$('>' * ($nestedPromptLevel + 1)) "
}