Updated to ConvertFrom-ExcelSheet

ImportExcel.psm1

@@ -232,29 +232,55 @@ function Export-Excel {
     }
 }
 
-function Export-MultipleExcelSheets {
-    param(
-        [Parameter(Mandatory)]
+function ConvertFrom-ExcelSheet {
+    <#
+        .Synopsis
+        Reads an Excel file an converts the data to a delimited text file
+
+        .Example
+        ConvertFrom-ExcelSheet .\TestSheets.xlsx .\data
+        Reads each sheet in TestSheets.xlsx and outputs it to the data directory as the sheet name with the extension .txt
+
+        .Example
+        ConvertFrom-ExcelSheet .\TestSheets.xlsx .\data sheet?0
+        Reads and outputs sheets like Sheet10 and Sheet20 form TestSheets.xlsx and outputs it to the data directory as the sheet name with the extension .txt
+    #>
+
+    [CmdletBinding()]
+    param
+    (
+        [Parameter(Mandatory = $true)]
+        [String]
         $Path,
-        [Parameter(Mandatory)]
-        [hashtable]$InfoMap,
-        [string]$Password,
-        [Switch]$Show,
-        [Switch]$AutoSize
+        [String]
+        $OutputPath = '.\',
+        [String]
+        $SheetName="*",
+        [string]
+        $Encoding = 'UTF8',
+        [string]
+        $Extension = '.txt',
+        [string]
+        $Delimiter = ';'
     )
 
-    $parameters = @{}+$PSBoundParameters
-    $parameters.Remove("InfoMap")
-    $parameters.Remove("Show")
+    $Path = (Resolve-Path $Path).Path
+    $xl = New-Object -TypeName OfficeOpenXml.ExcelPackage -ArgumentList $Path
+    $workbook = $xl.Workbook
 
-    $parameters.Path = $ExecutionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath($Path)
+    $targetSheets = $workbook.Worksheets | Where {$_.Name -like $SheetName}
 
-    foreach ($entry in $InfoMap.GetEnumerator()) {
-        Write-Progress -Activity "Exporting" -Status "$($entry.Key)"
-        $parameters.WorkSheetname=$entry.Key
+    $params = @{} + $PSBoundParameters
+    $params.Remove("OutputPath")
+    $params.Remove("SheetName")
+    $params.NoTypeInformation = $true
 
-        & $entry.Value | Export-Excel @parameters
+    Foreach ($sheet in $targetSheets)
+    {
+        Write-Verbose "Exporting sheet: $($sheet.Name)"
+
+        $params.Path = "$($OutputPath)\$($Sheet.Name)$($Extension)"
+
+        Import-Excel $Path -Sheet $($sheet.Name) | Export-Csv @params
     }
-
-    if($Show) {Invoke-Item $Path}
-}
+}