Bulk Email Extractor. Need to add a Regxp - excel VBA - excel

Question

I am trying to update my first code with parts of a second code, but have been struggling for a few weeks now. Both codes extract emails from a url list.
THE FIRST CODE
This code is fine apart from it uses Mailto: rather than a Regxp. I am trying to replace the Mailto: in the first code with a Regxp from the second code as the regxp extracts more emails.
How the First code works.
A list of urls are placed in Sheet2 "Urls" and the results are show in Sheet1 "Results". This code will extract ALL emails from the site, so if there are 10 emails it will extract ALL 10, if 100 then it will extract All 100 EMAIL. The SECOND code only extracts 1 email per site.
The problem with the FIRST CODE is that the Mailto: does MISS a lot of email where as the REGXP captures more, and so I want to update the first code. However I have been struggling for a few weeks now as I am not super hot in writing code. The first code was originaly written by me and then updated by another developer and his code is wayout of my skill depth. I have been trying for weeks to update it but can not seem to work anything out so I decided to post.
I have listed the first code below. You can download a sample workbook from here Download Link First code
Link to my second code that I also wrote, and the EMAIL REGXP i am trying to use, My Post StackOver Flow
FIRST CODE, Bulk Email Extractor. ONLY EMAIL PART NEEDS UPDATING WITH REGXP.
Sub ScrapeSoMeAndMailAddresses()
'Columns for both tables
Const colUrl As Long = 1 'Must always be the first column
Const colMail As Long = 2 'Must always be the first column before Some platforms
Const colFacebook As Long = 3 'Must always be the last column of Some platforms
Const colError As Long = 4 'Must always be the last column
Dim url As String
Dim http As Object
Dim htmlDoc As Object
Dim nodeAllLinks As Object
Dim nodeOneLink As Object
Dim pageLoadSuccessful As Boolean
Dim tableUrlsOneAddressLeft As String
Dim tableAllAddresses As String
Dim currentRowTableUrls As Long
Dim lastRowTableUrls As Long
Dim currentRowsTableAll(colUrl To colFacebook) As Long
Dim lastRowTableAll As Long
Dim addressCounters(colMail To colFacebook) As Long
Dim checkCounters As Long
'Initialize variables
tableUrlsOneAddressLeft = "Urls" ''Name of Sheet
currentRowTableUrls = 2 'First row for content
tableAllAddresses = "Results" ''Name of Sheet
For checkCounters = colUrl To colFacebook
currentRowsTableAll(checkCounters) = 2 'First rows for content
Next checkCounters
Set htmlDoc = CreateObject("htmlfile")
Set http = CreateObject("MSXML2.ServerXMLHTTP.6.0")
'Clear all contents and comments in the URL source sheet from email column to error column
With Sheets(tableUrlsOneAddressLeft)
lastRowTableUrls = .Cells(Rows.Count, colUrl).End(xlUp).Row
.Range(.Cells(currentRowTableUrls, colMail), .Cells(lastRowTableUrls, colError)).ClearContents
.Range(.Cells(currentRowTableUrls, colMail), .Cells(lastRowTableUrls, colError)).ClearComments
End With
'Delete all rows except headline in the sheet with all addresses
lastRowTableAll = Sheets(tableAllAddresses).Cells(Rows.Count, colUrl).End(xlUp).Row
Sheets(tableAllAddresses).Rows(currentRowsTableAll(colUrl) & ":" & lastRowTableAll).Delete Shift:=xlUp
'Loop over all URLs in column A in the URL source sheet
Do While Sheets(tableUrlsOneAddressLeft).Cells(currentRowTableUrls, 1).Value <> ""
'Scroll for visual monitoring, if 'the sheet with the URLs are the
'active one
If ActiveSheet.Name = tableUrlsOneAddressLeft Then
If currentRowTableUrls > 14 Then
ActiveWindow.SmallScroll down:=1
End If
Sheets(tableUrlsOneAddressLeft).Cells(currentRowTableUrls, 1).Select
End If
'Get next url from the URL source sheet
url = Sheets(tableUrlsOneAddressLeft).Cells(currentRowTableUrls, colUrl).Value
'Try to load page 'Temporarily disable error handling if 'there is a timeout or onother error
On Error Resume Next
http.Open "GET", url, False
http.send
'Check if page loading was successful
If Err.Number = 0 Then
pageLoadSuccessful = True
End If
On Error GoTo 0
If pageLoadSuccessful Then
'Build html document for DOM operations
htmlDoc.body.innerHtml = http.responseText
'Create node list from all links of the page
Set nodeAllLinks = htmlDoc.getElementsByTagName("a")
'Walk through all links of the node list
For Each nodeOneLink In nodeAllLinks
'''#####################################################################################################
'''################################### THIS IS THE START OF THE EMAIL SECTION ##########################
'''#####################################################################################################
'Check for mail address
If InStr(1, nodeOneLink.href, "mailto:") Then
'Write mail address to both tables
Sheets(tableUrlsOneAddressLeft).Cells(currentRowTableUrls, colMail).Value = Right(nodeOneLink.href, Len(nodeOneLink.href) - InStr(nodeOneLink.href, ":"))
Sheets(tableAllAddresses).Cells(currentRowsTableAll(colMail), colMail).Value = Right(nodeOneLink.href, Len(nodeOneLink.href) - InStr(nodeOneLink.href, ":"))
'Check if it is a new line in the sheet with all addresses
If currentRowsTableAll(colMail) >= currentRowsTableAll(colUrl) Then
'Write URL in the new line of the sheet with all addresses
Sheets(tableAllAddresses).Cells(currentRowsTableAll(colUrl), colUrl).Value = url
'Increment url counter
currentRowsTableAll(colUrl) = currentRowsTableAll(colUrl) + 1
End If
'Increment mail counters
currentRowsTableAll(colMail) = currentRowsTableAll(colMail) + 1
addressCounters(colMail) = addressCounters(colMail) + 1
End If
'''#####################################################################################################
'''################################### END OF THE EMAIL SECTION ########################################
'''#####################################################################################################
'Check for Facebook address
If InStr(1, UCase(nodeOneLink.href), "FACEBOOK") Then
'Write Facebook address to both tables
Sheets(tableUrlsOneAddressLeft).Cells(currentRowTableUrls, colFacebook).Value = nodeOneLink.href
Sheets(tableAllAddresses).Cells(currentRowsTableAll(colFacebook), colFacebook).Value = nodeOneLink.href
'Check if it is a new line in the sheet with all addresses
If currentRowsTableAll(colFacebook) >= currentRowsTableAll(colUrl) Then
'Write URL in the new line of the sheet with all addresses
Sheets(tableAllAddresses).Cells(currentRowsTableAll(colUrl), colUrl).Value = url
'Increment url counter
currentRowsTableAll(colUrl) = currentRowsTableAll(colUrl) + 1
End If
'Increment Facebook counters
currentRowsTableAll(colFacebook) = currentRowsTableAll(colFacebook) + 1
addressCounters(colFacebook) = addressCounters(colFacebook) + 1
End If
Next nodeOneLink
'Check address counters
For checkCounters = colMail To colFacebook
'Set comment if more than 1 link were found
If addressCounters(checkCounters) > 1 Then
Sheets(tableUrlsOneAddressLeft).Cells(currentRowTableUrls, checkCounters).AddComment Text:=CStr(addressCounters(checkCounters))
Sheets(tableUrlsOneAddressLeft).Cells(currentRowTableUrls, checkCounters).Comment.Shape.TextFrame.AutoSize = True
End If
Next checkCounters
Else
'Page not loaded
'Write message URL table
Sheets(tableUrlsOneAddressLeft).Cells(currentRowTableUrls, colError).Value = "Error with URL or timeout"
End If
'Prepare for next page
pageLoadSuccessful = False
Erase addressCounters
lastRowTableAll = Sheets(tableAllAddresses).Cells(Rows.Count, colUrl).End(xlUp).Row
For checkCounters = colUrl To colFacebook
currentRowsTableAll(checkCounters) = lastRowTableAll + 1 'First rows for next page content
Next checkCounters
currentRowTableUrls = currentRowTableUrls + 1
Loop
'Clean up
Set http = Nothing
Set htmlDoc = Nothing
Set nodeAllLinks = Nothing
Set nodeOneLink = Nothing
End Sub
As always thanks in advance.

Answer 1

I recommend you save a copy of your workbook before running the code in my answer. Hopefully it works and does what you need it to, I wasn't able to test it fully.
The GetEmailAddressesFromHtml function in the code below extracts email addresses using the regular expression you've included in your answer.
I think one thing the code below doesn't do (which your code did) was add comments to the Urls worksheet. But you could set up an Excel formula (e.g. COUNTIFS) to do that in my opinion.
I only add unique Facebook URLs and email addresses, so you shouldn't see any duplicates on the Results sheet.
Option Explicit
Option Private Module 'This option means that Subs of this module are not displayed in the macros of the Excel GUI
' https://learn.microsoft.com/en-us/office/vba/language/reference/user-interface-help/raise-method
Private Const ERR_REQUEST_FAILED As Long = 513
Private Const ERR_INVALID_HTML As Long = 514
Private Sub PrepareSourceSheet( _
ByVal someSheet As Worksheet, ByVal firstRowToClear As Long, ByVal lastRowToClear As Long, _
ByVal firstColumnToClear As Long, ByVal lastColumnToClear As Long)
' Should clear all contents and comments in the source sheet from email column to error column
With someSheet
With .Range(.Cells(firstRowToClear, firstColumnToClear), .Cells(lastRowToClear, lastColumnToClear))
Debug.Assert Intersect(.Cells, .Parent.Columns(1)) Is Nothing
.ClearContents
.ClearComments
End With
End With
End Sub
Private Sub PrepareDestinationSheet(ByVal someSheet As Worksheet, ByVal firstRowToDelete As Long)
'Should delete all rows starting from and including "firstRowToDelete".
With someSheet
.rows(firstRowToDelete & ":" & .rows.CountLarge).Delete Shift:=xlUp
End With
End Sub
Private Sub ScrapeSomeData()
'Columns for both tables
Const COLUMN_URL As Long = 1 'Must always be the first column
Const COLUMN_EMAIL As Long = 2 'Must always be the first column before Some platforms
Const COLUMN_FACEBOOK As Long = 3 'Must always be the last column of Some platforms
Const COLUMN_ERROR As Long = 4 'Must always be the last column
Const FIRST_SOURCE_ROW As Long = 2 ' Skip headers
Const FIRST_DESTINATION_ROW As Long = 2 ' Skip headers
Dim sourceSheet As Worksheet
Set sourceSheet = ThisWorkbook.Worksheets("Urls")
Dim destinationSheet As Worksheet
Set destinationSheet = ThisWorkbook.Worksheets("Results")
Dim lastSourceRow As Long
lastSourceRow = sourceSheet.Cells(sourceSheet.rows.Count, COLUMN_URL).End(xlUp).Row
PrepareSourceSheet someSheet:=sourceSheet, firstRowToClear:=FIRST_SOURCE_ROW, _
lastRowToClear:=lastSourceRow, firstColumnToClear:=COLUMN_EMAIL, lastColumnToClear:=COLUMN_ERROR
PrepareDestinationSheet someSheet:=destinationSheet, firstRowToDelete:=FIRST_DESTINATION_ROW
Dim destinationRowIndex As Long
destinationRowIndex = FIRST_DESTINATION_ROW
Dim sourceRowIndex As Long
For sourceRowIndex = FIRST_SOURCE_ROW To lastSourceRow
Dim data As Collection
Set data = GetDataForUrl(sourceSheet.Cells(sourceRowIndex, COLUMN_URL))
With destinationSheet
Dim currentRowData As Variant
For Each currentRowData In data
.Cells(destinationRowIndex, COLUMN_URL).Value = currentRowData("url")
.Cells(destinationRowIndex, COLUMN_EMAIL).Value = currentRowData("emailAddress")
.Cells(destinationRowIndex, COLUMN_FACEBOOK).Value = currentRowData("facebookUrl")
.Cells(destinationRowIndex, COLUMN_ERROR).Value = currentRowData("errorMessage")
destinationRowIndex = destinationRowIndex + 1
Next currentRowData
End With
With sourceSheet
.Cells(sourceRowIndex, COLUMN_EMAIL).Value = data(1)("emailAddress")
.Cells(sourceRowIndex, COLUMN_FACEBOOK).Value = data(1)("facebookUrl")
.Cells(sourceRowIndex, COLUMN_ERROR).Value = data(1)("errorMessage")
End With
DoEvents
Next sourceRowIndex
End Sub
Private Function GetHtmlFromUrl(ByVal someUrl As String) As Object
' Should return a HTML document. Raises an error if URL is unavailable
' (at the time of requesting) or if HTML could not be assigned.
Dim httpClient As Object
Set httpClient = CreateObject("MSXML2.ServerXMLHTTP.6.0")
Dim succeeded As Boolean
httpClient.Open "GET", someUrl, False
On Error Resume Next
httpClient.Send
succeeded = (0 = Err.Number)
On Error GoTo 0
If Not succeeded Then Err.Raise ERR_REQUEST_FAILED, , "Error with URL or timeout"
Dim htmlDocument As Object
Set htmlDocument = CreateObject("htmlfile")
On Error Resume Next
htmlDocument.body.innerHTML = httpClient.responseText
succeeded = (0 = Err.Number)
On Error GoTo 0
If Not succeeded Then Err.Raise ERR_INVALID_HTML, , "Error whilst assigning HTML"
Set GetHtmlFromUrl = htmlDocument
End Function
Private Function GetFacebookUrlsFromHtml(ByVal htmlDocument As Object) As Collection
' Should return a collection of strings that are Facebook URLs detected.
' This function only looks within anchor tags.
Dim outputCollection As Collection
Set outputCollection = New Collection
Dim allAnchorTags As Object
Set allAnchorTags = htmlDocument.getElementsByTagName("a")
Dim anchorTag As Object
For Each anchorTag In allAnchorTags
If InStr(1, UCase$(anchorTag.href), "FACEBOOK", vbBinaryCompare) > 0 Then
On Error Resume Next
outputCollection.Add anchorTag.href, Key:=anchorTag.href ' De-duplicate here
On Error GoTo 0
End If
Next anchorTag
Set GetFacebookUrlsFromHtml = outputCollection
End Function
Private Function GetEmailAddressesFromHtml(ByVal htmlDocument As Object) As Collection
' Should return a collection of strings representing email addresses detected
' in the HTML document.
Dim outputCollection As Collection
Set outputCollection = New Collection
Dim regEx As Object
Set regEx = CreateObject("VBScript.RegExp")
With regEx
.Pattern = "[a-zA-Z0-9_.+-]+#[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+"
.Global = True
Dim emailMatches As Object
Set emailMatches = .Execute(htmlDocument.body.innerHTML)
End With
Dim matchFound As Object
For Each matchFound In emailMatches
On Error Resume Next ' De-duplicate here.
outputCollection.Add matchFound.Value, Key:=matchFound.Value
On Error GoTo 0
Next matchFound
Set GetEmailAddressesFromHtml = outputCollection
End Function
Private Function CreateRowDataForError(ByVal wasSuccess, ByVal errorMessage, ByVal someUrl As String) As Collection
' Context: An error has occurred and we don't have any data (Facebook URLs, email addresses).
' So can only return the URL attempted and the error message.
Dim nestedCollection As Collection
Set nestedCollection = New Collection
nestedCollection.Add wasSuccess, "wasSuccess"
nestedCollection.Add errorMessage, "errorMessage"
nestedCollection.Add someUrl, "url"
nestedCollection.Add vbNullString, "facebookUrl"
nestedCollection.Add vbNullString, "emailAddress"
Set CreateRowDataForError = New Collection
CreateRowDataForError.Add nestedCollection
Debug.Assert 1 = CreateRowDataForError.Count
End Function
Private Function CreateRowDataForResults(ByVal wasSuccess As Boolean, ByVal errorMessage As String, _
ByVal someUrl As String, ByVal facebookUrls As Collection, ByVal emailAddresses As Collection) As Collection
' Context: No error occurred. HTML document may or may not contain data,
' but logic below should handle both scenarios.
Dim nestedCollection As Collection
Dim outerCollection As Collection
Set outerCollection = New Collection
Dim i As Long
For i = 1 To Application.Max(1, facebookUrls.Count, emailAddresses.Count)
Set nestedCollection = New Collection
nestedCollection.Add wasSuccess, Key:="wasSuccess"
nestedCollection.Add errorMessage, Key:="errorMessage"
nestedCollection.Add someUrl, Key:="url"
nestedCollection.Add GetCollectionItemOrDefault(facebookUrls, i, vbNullString), Key:="facebookUrl"
nestedCollection.Add GetCollectionItemOrDefault(emailAddresses, i, vbNullString), Key:="emailAddress"
outerCollection.Add nestedCollection
Next i
Debug.Assert outerCollection.Count = Application.Max(1, facebookUrls.Count, emailAddresses.Count)
Set CreateRowDataForResults = outerCollection
End Function
Private Function GetDataForUrl(ByVal someUrl As String) As Collection
' Currently this function misuses Collection class. Should probably instead write a class to return a custom object/data structure.
' Returns a collection of nested collections, where each nested collection is as below:
' • "wasSuccess" = whether data was successfully retrieved
' • "errorMessage" = an error message mentioning what happened
' • "facebookUrl" = a Facebook URL detected
' • "emailAddress" = an email address detected
Dim wasSuccess As Boolean
Dim errorMessage As String
Dim htmlDocument As Object
On Error Resume Next
Set htmlDocument = GetHtmlFromUrl(someUrl)
wasSuccess = (0 = Err.Number)
If Not wasSuccess Then
errorMessage = IIf(ERR_REQUEST_FAILED = Err.Number Or ERR_INVALID_HTML = Err.Number, Err.Description, "Unexpected error occurred")
End If
On Error GoTo 0
If Not wasSuccess Then
Set GetDataForUrl = CreateRowDataForError(wasSuccess, errorMessage, someUrl)
Else
Dim facebookUrls As Collection
Set facebookUrls = GetFacebookUrlsFromHtml(htmlDocument)
Dim emailAddresses As Collection
Set emailAddresses = GetEmailAddressesFromHtml(htmlDocument)
Set GetDataForUrl = CreateRowDataForResults(wasSuccess, errorMessage, someUrl, facebookUrls, emailAddresses)
End If
End Function
Private Function GetCollectionItemOrDefault(ByVal someCollection As Collection, ByVal someKey As Variant, ByVal someDefaultValue As Variant) As Variant
' Assumes item is not an object. This function will return false negatives if item being retrieved is an object.
Dim succeeded As Boolean
On Error Resume Next
GetCollectionItemOrDefault = someCollection(someKey)
succeeded = (0 = Err.Number)
On Error GoTo 0
If Not succeeded Then GetCollectionItemOrDefault = someDefaultValue
End Function
From a maintenance and coding perspective, I think something like Node.js or Python would allow you to get the same work done in fewer lines of code.