Data commit

Task/Brace-expansion/PowerShell/brace-expansion-1.psh

@@ -0,0 +1,55 @@
+function Expand-Braces ( [string]$String )
+    {
+    $Escaped = $False
+    $Stack = New-Object System.Collections.Stack
+    $ClosedBraces = $BracesToParse = $Null
+
+    ForEach ( $i in 0..($String.Length-1) )
+        {
+        Switch ( $String[$i] )
+            {
+            '\' {
+                $Escaped = -not $Escaped
+                break
+                }
+
+            '{' {
+                If ( -not $Escaped ) { $Stack.Push( [pscustomobject]@{ Delimiters = @( $i ) } ) }
+                }
+
+            ',' {
+                If ( -not $Escaped -and $Stack.Count ) { $Stack.Peek().Delimiters += $i }
+                }
+
+            '}' {
+                If ( -not $Escaped -and $Stack.Count )
+                    {
+                    $Stack.Peek().Delimiters += $i
+                    $ClosedBraces = $Stack.Pop()
+                    If ( $ClosedBraces.Delimiters.Count -gt 2 )
+                        {
+                        $BracesToParse = $ClosedBraces
+                        }
+                    }
+                }
+
+            default { $Escaped = $False }
+            }
+        }
+
+        If ( $BracesToParse )
+            {
+            $Start = $String.Substring( 0, $BracesToParse.Delimiters[0] )
+            $End   = $String.Substring( $BracesToParse.Delimiters[-1] + 1 )
+
+            ForEach ( $i in 0..($BracesToParse.Delimiters.Count-2) )
+                {
+                $Option = $String.Substring( $BracesToParse.Delimiters[$i] + 1, $BracesToParse.Delimiters[$i+1] - $BracesToParse.Delimiters[$i] - 1 )
+                Expand-Braces ( $Start + $Option + $End )
+                }
+            }
+        Else
+            {
+            $String
+            }
+    }

Task/Brace-expansion/PowerShell/brace-expansion-2.psh

@@ -0,0 +1,14 @@
+$TestStrings = @(
+    'It{{em,alic}iz,erat}e{d,}, please.'
+    '~/{Downloads,Pictures}/*.{jpg,gif,png}'
+    '{,{,gotta have{ ,\, again\, }}more }cowbell!'
+    '{}} some }{,{\\{ edge, edge} \,}{ cases, {here} \\\\\}'
+    )
+
+ForEach ( $String in $TestStrings )
+    {
+    ''
+    $String
+    '------'
+    Expand-Braces $String
+    }