{"id":2287,"date":"2012-05-11T09:37:07","date_gmt":"2012-05-11T13:37:07","guid":{"rendered":"http:\/\/jdhitsolutions.com\/blog\/?p=2287"},"modified":"2012-05-11T09:40:28","modified_gmt":"2012-05-11T13:40:28","slug":"friday-fun-powershell-ise-function-finder","status":"publish","type":"post","link":"https:\/\/jdhitsolutions.com\/blog\/powershell\/2287\/friday-fun-powershell-ise-function-finder\/","title":{"rendered":"Friday Fun: PowerShell ISE Function Finder"},"content":{"rendered":"

At the PowerShell Deep Dive in San Diego, I did a lightning session showing off something I had been working on. Sometimes I don't know what possesses me, but I felt the need for a better way to navigate my PowerShell scripts files that had many functions. Some files, especially modules, can get quite long and contain a number of functions. When using the PowerShell ISE I wanted a faster way to jump to a function. The problem is I don't always remember what I called a function or where it is in the file. It is very easy to jump to a particular line in the ISE using the Ctrl+G shortcut. <\/p>\n

So I started with some basics.<\/p>\n


\n$Path=$psise.CurrentFile.FullPath
\n<\/code><\/p>\n

I decided I'd use a regular expression pattern to find my functions. I write my functions like this:<\/p>\n


\nFunction Get-Foo {<\/p>\n

Param()
\n...
\n<\/code><\/p>\n

So I came up with a regex pattern to match the first line and to include the Filter keyword as well.<\/p>\n


\n[regex]$r=\"^(Function|Filter)\\s\\S+\\s{\"
\n<\/code><\/p>\n

I first thought of searching the content of the current file, but that won't give me a line number. Then I thought of Select-String. With my regex pattern, I can get the content of the current file and pipe it to Select-String. The match object that comes out the other end of the pipeline includes a line number property (awesome) and the matching line. I decided to do a little string parsing on the later to drop off the trailing curly brace.<\/p>\n


\n$list=get-content $path |
\n select-string $r | Select LineNumber,
\n @{Name=\"Function\";Expression={$_.Line.Split()[1]}}
\n<\/code><\/p>\n

Because I'm in the ISE I felt the need to stay graphical, so my first thought was to pipe the results to Out-Gridview.<\/p>\n


\n$list | out-gridview -Title $psise.CurrentFile.FullPath
\n<\/code><\/p>\n

Here's a sample result.<\/p>\n

\"\"<\/a><\/p>\n

Now I can see the function name and line number. In the ISE I can do Ctrl+G and jump to the function. Of course, if I modify the file and line numbers change I need to close the grid and re-run my command. But wait, there's more....<\/p>\n

I've never done much with the WPF and figured this would be a great opportunity to do something with the ShowUI<\/a> module. I already had the data. All I had to do was create a form with ShowUI. This is what I ended up with.<\/p>\n


\n[string]$n=$psise.CurrentFile.DisplayName
\nScrollViewer -ControlName $n -CanContentScroll -tag $psise.CurrentFile.FullPath -content {
\n StackPanel -MinWidth 300 -MaxHeight 250 `
\n -orientation Vertical -Children {
\n #get longest number if more than one function is found
\n if ($count -eq 1) {
\n [string]$i=$list.Linenumber
\n }
\n else {
\n [string]$i=$list[-1].Linenumber
\n }
\n $l=$i.length
\n foreach ($item in $list) {<\/p>\n

[string]$text=\"{0:d$l} {1}\" -f $item.linenumber,$item.function<\/p>\n

Button $text -HorizontalContentAlignment Left -On_Click {
\n #get the line number
\n [regex]$num=\"^\\d+\"
\n #parse out the line number
\n $goto = $num.match($this.content).value
\n #grab the file name from the tab value of the parent control
\n [string]$f= $parent | get-uivalue
\n #Open the file in the editor
\n psedit $f
\n #goto the selected line
\n $psise.CurrentFile.Editor.SetCaretPosition($goto,1)
\n #close the control
\n Get-ParentControl | Set-UIValue -PassThru |Close-Control
\n } #onclick
\n } #foreach
\n }
\n } -show
\n<\/code><\/p>\n

The result is a stack panel of buttons in a scroll control. The button shows the line number and function name.<\/p>\n

\"\"<\/a><\/p>\n

When a button is clicked, the function gets the line number and automatically jumps to it. Originally I was leaving the control open, but this means the function is still running. And if I change the script the line numbers are off so I simply close the form after jumping to the function. <\/p>\n

In the end, I packaged all of this as a script file that adds a menu choice. If ShowUI is available, the function will use it. Otherwise the function defaults to Out-GridView.<\/p>\n


\nFunction Get-ISEFunction {<\/p>\n

[cmdletbinding()]
\nParam([string]$Path=$psise.CurrentFile.FullPath)<\/p>\n

#import ShowUI if found and use it later in the functoin
\nif (Get-module -name ShowUI -listavailable) {
\n Import-Module ShowUI
\n $showui=$True
\n}
\nelse {
\n Write-Verbose \"Using Out-GridView\"
\n $showui=$False
\n}<\/p>\n

#define a regex to find \"function | filter NAME {\"
\n[regex]$r=\"^(Function|Filter)\\s\\S+\\s{\"<\/p>\n

$list=get-content $path |
\n select-string $r | Select LineNumber,
\n @{Name=\"Function\";Expression={$_.Line.Split()[1]}}<\/p>\n

#were any functions found?
\nif ($list) {
\n $count=$list | measure-object | Select-object -ExpandProperty Count
\n Write-Verbose \"Found $count functions\"
\n if ($showui) {
\n <#\n display function list with a WPF Form from ShowUI\n Include file name so the right tab can get selected\n #><\/p>\n

[string]$n=$psise.CurrentFile.DisplayName
\n Write-Verbose \"Building list for $n\"<\/p>\n

ScrollViewer -ControlName $n -CanContentScroll -tag $psise.CurrentFile.FullPath -content {
\n StackPanel -MinWidth 300 -MaxHeight 250 `
\n -orientation Vertical -Children {
\n #get longest number if more than one function is found
\n if ($count -eq 1) {
\n [string]$i=$list.Linenumber
\n }
\n else {
\n [string]$i=$list[-1].Linenumber
\n }
\n $l=$i.length
\n foreach ($item in $list) {<\/p>\n

[string]$text=\"{0:d$l} {1}\" -f $item.linenumber,$item.function
\n Write-Verbose $text
\n Button $text -HorizontalContentAlignment Left -On_Click {
\n #get the line number
\n [regex]$num=\"^\\d+\"
\n #parse out the line number
\n $goto = $num.match($this.content).value
\n #grab the file name from the tab value of the parent control
\n [string]$f= $parent | get-uivalue
\n #Open the file in the editor
\n psedit $f
\n #goto the selected line
\n $psise.CurrentFile.Editor.SetCaretPosition($goto,1)
\n #close the control
\n Get-ParentControl | Set-UIValue -PassThru |Close-Control
\n } #onclick
\n } #foreach
\n }
\n } -show <\/p>\n

} #if $showui
\n else {
\n #no ShowUI module so use Out-GridView
\n $list | out-gridview -Title $psise.CurrentFile.FullPath
\n }
\n }
\nelse {
\n Write-Host \"No functions found in $($psise.CurrentFile.FullPath)\" -ForegroundColor Magenta
\n}<\/p>\n

} #close function<\/p>\n

#Add to the Add-ons menu
\n$PSISE.CurrentPowerShellTab.AddOnsMenu.Submenus.Add(\"List Functions\",{Get-ISEFunction},$null)<\/p>\n

#optional alias
\nset-alias gif get-isefunction
\n<\/code><\/p>\n

Now, I can click the List Functions menu choice and I'll get a graphical list of any functions in the current file. I'm sure the regex could be tweaked. I'm also sure there are improvements I could make to the ShowUI code, but it works.<\/p>\n

Download Get-ISEFunction<\/a> and let me know what you think.<\/p>\n","protected":false},"excerpt":{"rendered":"

At the PowerShell Deep Dive in San Diego, I did a lightning session showing off something I had been working on. Sometimes I don’t know what possesses me, but I felt the need for a better way to navigate my PowerShell scripts files that had many functions. Some files, especially modules, can get quite long…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[271,4,231,8],"tags":[568,232,365,534,540,378,379],"class_list":["post-2287","post","type-post","status-publish","format-standard","hentry","category-friday-fun","category-powershell","category-powershell-ise","category-scripting","tag-friday-fun","tag-ise","tag-out-gridview","tag-powershell","tag-scripting","tag-showui","tag-wpf"],"yoast_head":"\nFriday Fun: PowerShell ISE Function Finder • The Lonely Administrator<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jdhitsolutions.com\/blog\/powershell\/2287\/friday-fun-powershell-ise-function-finder\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Friday Fun: PowerShell ISE Function Finder • The Lonely Administrator\" \/>\n<meta property=\"og:description\" content=\"At the PowerShell Deep Dive in San Diego, I did a lightning session showing off something I had been working on. Sometimes I don't know what possesses me, but I felt the need for a better way to navigate my PowerShell scripts files that had many functions. Some files, especially modules, can get quite long...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/jdhitsolutions.com\/blog\/powershell\/2287\/friday-fun-powershell-ise-function-finder\/\" \/>\n<meta property=\"og:site_name\" content=\"The Lonely Administrator\" \/>\n<meta property=\"article:published_time\" content=\"2012-05-11T13:37:07+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2012-05-11T13:40:28+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/jdhitsolutions.com\/blog\/wp-content\/uploads\/2012\/05\/functionlist-gridview-252x300.png\" \/>\n<meta name=\"author\" content=\"Jeffery Hicks\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@JeffHicks\" \/>\n<meta name=\"twitter:site\" content=\"@JeffHicks\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Jeffery Hicks\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading 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