Data commit

Task/Update-a-configuration-file/PowerShell/update-a-configuration-file-1.psh

@@ -0,0 +1,107 @@
+function Update-ConfigurationFile
+{
+    [CmdletBinding()]
+    Param
+    (
+        [Parameter(Mandatory=$false,
+                   Position=0)]
+        [ValidateScript({Test-Path $_})]
+        [string]
+        $Path = ".\config.txt",
+
+        [Parameter(Mandatory=$false)]
+        [string]
+        $FavouriteFruit,
+
+        [Parameter(Mandatory=$false)]
+        [int]
+        $NumberOfBananas,
+
+        [Parameter(Mandatory=$false)]
+        [int]
+        $NumberOfStrawberries,
+
+        [Parameter(Mandatory=$false)]
+        [ValidateSet("On", "Off")]
+        [string]
+        $NeedsPeeling,
+
+        [Parameter(Mandatory=$false)]
+        [ValidateSet("On", "Off")]
+        [string]
+        $SeedsRemoved
+    )
+
+    [string[]]$lines = Get-Content $Path
+
+    Clear-Content $Path
+
+    if (-not ($lines | Select-String -Pattern "^\s*NumberOfStrawberries" -Quiet))
+    {
+        "", "# How many strawberries we have", "NumberOfStrawberries 0" | ForEach-Object {$lines += $_}
+    }
+
+    foreach ($line in $lines)
+    {
+        $line = $line -replace "^\s*",""  ## Strip leading whitespace
+
+        if ($line -match "[;].*\s*") {continue}  ## Strip semicolons
+
+        switch -Regex ($line)
+        {
+            "(^$)|(^#\s.*)"                                              ## Blank line or comment
+            {
+                $line = $line
+            }
+            "^FavouriteFruit\s*.*"                                       ## Parameter FavouriteFruit
+            {
+                if ($FavouriteFruit)
+                {
+                    $line = "FAVOURITEFRUIT $FavouriteFruit"
+                }
+            }
+            "^NumberOfBananas\s*.*"                                      ## Parameter NumberOfBananas
+            {
+                if ($NumberOfBananas)
+                {
+                    $line = "NUMBEROFBANANAS $NumberOfBananas"
+                }
+            }
+            "^NumberOfStrawberries\s*.*"                                 ## Parameter NumberOfStrawberries
+            {
+                if ($NumberOfStrawberries)
+                {
+                    $line = "NUMBEROFSTRAWBERRIES $NumberOfStrawberries"
+                }
+            }
+            ".*NeedsPeeling\s*.*"                                        ## Parameter NeedsPeeling
+            {
+                if ($NeedsPeeling -eq "On")
+                {
+                    $line = "NEEDSPEELING"
+                }
+                elseif ($NeedsPeeling -eq "Off")
+                {
+                    $line = "; NEEDSPEELING"
+                }
+            }
+            ".*SeedsRemoved\s*.*"                                        ## Parameter SeedsRemoved
+            {
+                if ($SeedsRemoved -eq "On")
+                {
+                    $line = "SEEDSREMOVED"
+                }
+                elseif ($SeedsRemoved -eq "Off")
+                {
+                    $line = "; SEEDSREMOVED"
+                }
+            }
+            Default                                                      ## Whatever...
+            {
+                $line = $line
+            }
+        }
+
+        Add-Content $Path -Value $line -Force
+    }
+}

Task/Update-a-configuration-file/PowerShell/update-a-configuration-file-2.psh

@@ -0,0 +1,3 @@
+Update-ConfigurationFile -NumberOfStrawberries 62000 -NumberOfBananas 1024 -SeedsRemoved On -NeedsPeeling Off
+
+Invoke-Item -Path ".\config.txt"