Functions/GenXdev.Queries.Webbrowser/Copy-PDFsFromGoogleQuery.ps1
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############################################################################### <# .SYNOPSIS Downloads PDF files found through Google search results. .DESCRIPTION Performs a Google query in the previously selected webbrowser tab and downloads all found PDF files into the current directory. Supports multiple queries and language filtering. .LICENSE Copyright (C) 2026 René Vaessen / GenXdev This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>. .PARAMETER Queries The search terms to query Google for PDF files. .PARAMETER Max Maximum number of results to retrieve (default: 200). .PARAMETER Language Optional language filter for search results. .EXAMPLE Open-Webbrowser Select-WebbrowserTab $null = New-Item -ItemType Directory -Name pdfs Set-Location pdfs Copy-PDFsFromGoogleQuery "scientific paper co2" -Max 50 -Language "English" #> function Copy-PDFsFromGoogleQuery { [CmdletBinding()] param( ######################################################################## [parameter( Mandatory = $true, Position = 0, ValueFromRemainingArguments = $false, ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true, HelpMessage = 'The search terms to query Google for PDF files' )] [Alias('q', 'Name', 'Text', 'Query')] [string[]] $Queries, ######################################################################## [parameter( Mandatory = $false, Position = 1, HelpMessage = 'Maximum number of results to retrieve (default: 200)' )] [int] $Max = 200, ######################################################################## [parameter( Mandatory = $false, Position = 2, HelpMessage = 'Optional language filter for search results' )] [ValidateSet( 'Afrikaans', 'Akan', 'Albanian', 'Amharic', 'Arabic', 'Armenian', 'Azerbaijani', 'Basque', 'Belarusian', 'Bemba', 'Bengali', 'Bihari', 'Bork, bork, bork!', 'Bosnian', 'Breton', 'Bulgarian', 'Cambodian', 'Catalan', 'Cherokee', 'Chichewa', 'Chinese (Simplified)', 'Chinese (Traditional)', 'Corsican', 'Croatian', 'Czech', 'Danish', 'Dutch', 'Elmer Fudd', 'English', 'Esperanto', 'Estonian', 'Ewe', 'Faroese', 'Filipino', 'Finnish', 'French', 'Frisian', 'Ga', 'Galician', 'Georgian', 'German', 'Greek', 'Guarani', 'Gujarati', 'Hacker', 'Haitian Creole', 'Hausa', 'Hawaiian', 'Hebrew', 'Hindi', 'Hungarian', 'Icelandic', 'Igbo', 'Indonesian', 'Interlingua', 'Irish', 'Italian', 'Japanese', 'Javanese', 'Kannada', 'Kazakh', 'Kinyarwanda', 'Kirundi', 'Klingon', 'Kongo', 'Korean', 'Krio (Sierra Leone)', 'Kurdish', 'Kurdish (Soranî)', 'Kyrgyz', 'Laothian', 'Latin', 'Latvian', 'Lingala', 'Lithuanian', 'Lozi', 'Luganda', 'Luo', 'Macedonian', 'Malagasy', 'Malay', 'Malayalam', 'Maltese', 'Maori', 'Marathi', 'Mauritian Creole', 'Moldavian', 'Mongolian', 'Montenegrin', 'Nepali', 'Nigerian Pidgin', 'Northern Sotho', 'Norwegian', 'Norwegian (Nynorsk)', 'Occitan', 'Oriya', 'Oromo', 'Pashto', 'Persian', 'Pirate', 'Polish', 'Portuguese (Brazil)', 'Portuguese (Portugal)', 'Punjabi', 'Quechua', 'Romanian', 'Romansh', 'Runyakitara', 'Russian', 'Scots Gaelic', 'Serbian', 'Serbo-Croatian', 'Sesotho', 'Setswana', 'Seychellois Creole', 'Shona', 'Sindhi', 'Sinhalese', 'Slovak', 'Slovenian', 'Somali', 'Spanish', 'Spanish (Latin American)', 'Sundanese', 'Swahili', 'Swedish', 'Tajik', 'Tamil', 'Tatar', 'Telugu', 'Thai', 'Tigrinya', 'Tonga', 'Tshiluba', 'Tumbuka', 'Turkish', 'Turkmen', 'Twi', 'Uighur', 'Ukrainian', 'Urdu', 'Uzbek', 'Vietnamese', 'Welsh', 'Wolof', 'Xhosa', 'Yiddish', 'Yoruba', 'Zulu' )] [string] $Language ######################################################################## ) process { foreach ($query in $Queries) { Microsoft.PowerShell.Utility\Write-Verbose "Processing query: $query with language: $($Language ?? 'default')" # construct search query with pdf filter $searchQuery = "filetype:pdf $query" Microsoft.PowerShell.Utility\Write-Verbose "Using search query: $searchQuery" # get search results using the fully qualified GenXdev\Get-GoogleSearchResultUrls $urls = GenXdev\Get-GoogleSearchResultUrls -Queries $searchQuery -Max $Max -Language $Language Microsoft.PowerShell.Utility\Write-Verbose "Found $($urls.Count) PDF URLs to process" Microsoft.PowerShell.Utility\Write-Verbose 'Starting parallel download with throttle limit: 64' # process urls in parallel $urls | Microsoft.PowerShell.Core\ForEach-Object -ThrottleLimit 64 -Parallel { try { Microsoft.PowerShell.Utility\Write-Verbose "Processing URL: $PSItem" # construct safe filename using centralized sanitizer $safeName = [Uri]::UnescapeDataString( [IO.Path]::GetFileName($PSItem) ).Split('#')[0].Split('?')[0] $safeName = [GenXdev.Helpers.SecurityHelper]::SanitizeFileName($safeName) Microsoft.PowerShell.Utility\Write-Verbose "Sanitized filename: $safeName" # create unique filename $destination = Microsoft.PowerShell.Management\Join-Path $using:PWD ( '{0}_{1}_{2}.pdf' -f $safeName, [DateTime]::UtcNow.Ticks, [Threading.Thread]::CurrentThread.ManagedThreadId ) Microsoft.PowerShell.Utility\Write-Verbose "Downloading to: $destination" # download pdf $response = Microsoft.PowerShell.Utility\Invoke-WebRequest -Uri $PSItem -OutFile $destination Microsoft.PowerShell.Utility\Write-Verbose "Download completed: $($response.StatusCode) - $($response.StatusDescription)" $fileInfo = Microsoft.PowerShell.Management\Get-Item -LiteralPath $destination Microsoft.PowerShell.Utility\Write-Verbose "Saved file: $($fileInfo.FullName) ($($fileInfo.Length) bytes)" $fileInfo } catch { Microsoft.PowerShell.Utility\Write-Warning "Failed to download: $PSItem. Error: $($_.Exception.Message)" } } Microsoft.PowerShell.Management\Get-ChildItem -LiteralPath .\ -filter "*.pdf" | Microsoft.PowerShell.Core\ForEach-Object { $newName = [System.Text.RegularExpressions.Regex]::Replace(($_.Name), '\.pdf_\d*_\d*\.pdf', '.pdf') if ($newName -eq $_.Name) { return } if ([IO.File]::Exists((GenXdev\Expand-Path ".\\$newName"))) { $null = Microsoft.PowerShell.Management\Remove-Item -LiteralPath $_.FullName -Force return; } $null = Microsoft.PowerShell.Management\Rename-Item -LiteralPath $_ $newName -Force } } } ################################################################################ } |