# encoding: ascii
# api: powershell
# title: Get-WebFile
# description: A complete rewrite of my wget script to use HttpWebRequest and Response to figure out the filename, added some unwrapping because a couple sites had quotes around the file names.
# version: 3.5
# type: script
# author: Joel Bennett
# license: CC0
# x-poshcode-id: 189
# x-derived-from-id: 417
# x-archived: 2015-03-09T00:12:09
# x-published: 2009-05-01T10:01:00
#
#
## Get-WebFile.ps1 (aka wget for PowerShell)
##############################################################################################################
## Downloads a file or page from the web
## History:
## v3.5 - Add -Quiet switch to turn off the progress reports ...
## v3.4 - Add progress report for files which don't report size
## v3.3 - Add progress report for files which report their size
## v3.2 - Use the pure Stream object because StreamWriter is based on TextWriter:
## it was messing up binary files, and making mistakes with extended characters in text
## v3.1 - Unwrap the filename when it has quotes around it
## v3 - rewritten completely using HttpWebRequest + HttpWebResponse to figure out the file name, if possible
## v2 - adds a ton of parsing to make the output pretty
## added measuring the scripts involved in the command, (uses Tokenizer)
##############################################################################################################
#function wget {
param(
$url = (Read-Host "The URL to download"),
$fileName,
[switch]$quiet
)
$req = [System.Net.HttpWebRequest]::Create($url);
$res = $req.GetResponse();
if($fileName -and !(Split-Path $fileName)) {
$fileName = Join-Path (Get-Location -PSProvider "FileSystem") $fileName
}
elseif(($fileName -eq $null) -or (Test-Path -PathType "Container" $fileName))
{
# if( -and !((Test-Path -PathType "Leaf" $fileName) -or ((Test-Path -PathType "Container" (Split-Path $fileName)) -and -not )))
[string]$fileName = ([regex]'(?i)filename=(.*)$').Match( $res.Headers["Content-Disposition"] ).Groups[1].Value
$fileName = $fileName.trim("\/""'")
if(!$fileName) {
$fileName = $res.ResponseUri.Segments[-1]
$fileName = $fileName.trim("\/")
if(!$fileName) {
$fileName = Read-Host "Please provide a file name"
}
$fileName = $fileName.trim("\/")
if(!([IO.FileInfo]$fileName).Extension) {
$fileName = $fileName + "." + $res.ContentType.Split(";")[0].Split("/")[1]
}
}
$fileName = Join-Path (Get-Location -PSProvider "FileSystem") $fileName
}
if($res.StatusCode -eq 200) {
[int]$goal = $res.ContentLength
$reader = $res.GetResponseStream()
$writer = new-object System.IO.FileStream $fileName, "Create"
[byte[]]$buffer = new-object byte[] 4096
[int]$total = [int]$count = 0
do
{
$count = $reader.Read($buffer, 0, $buffer.Length);
$writer.Write($buffer, 0, $count);
if(!$quiet) {
$total += $count
if($goal -gt 0) {
Write-Progress "Downloading $url" "Saving $total of $goal" -id 0 -percentComplete (($total/$goal)*100)
} else {
Write-Progress "Downloading $url" "Saving $total bytes..." -id 0
}
}
} while ($count -gt 0)
$writer.Flush()
$reader.Close()
$writer.Close()
}
$res.Close();
ls $fileName
#}