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//! This module implements the form parsing. It supports url-encoded forms
//! as well as multipart uploads.
use std::io::Read;
use hyper::header::Headers;
use hyper::mime::{Mime, TopLevel, SubLevel};
use formdata::{read_formdata, FilePart};
use url::form_urlencoded;
use datastructures::MultiDict;
/// This type implements parsing of form data for Pencil. It can parse
/// multipart and url encoded form data.
pub struct FormDataParser;
impl FormDataParser {
pub fn new() -> FormDataParser {
FormDataParser
}
pub fn parse<B: Read>(&self, body: &mut B, headers: &Headers, mimetype: &Mime) -> (MultiDict<String>, MultiDict<FilePart>) {
let default = (MultiDict::new(), MultiDict::new());
match *mimetype {
Mime(TopLevel::Application, SubLevel::WwwFormUrlEncoded, _) => {
let mut body_vec: Vec<u8> = Vec::new();
match body.read_to_end(&mut body_vec) {
Ok(_) => {
let mut form = MultiDict::new();
for (k, v) in form_urlencoded::parse(&body_vec).into_owned() {
form.add(k, v);
}
(form, MultiDict::new())
},
Err(_) => {
default
}
}
},
Mime(TopLevel::Multipart, SubLevel::FormData, _) => {
match read_formdata(body, headers) {
Ok(form_data) => {
let mut form = MultiDict::new();
let mut files = MultiDict::new();
for (name, value) in form_data.fields {
form.add(name, value);
}
for (name, file) in form_data.files {
files.add(name, file);
}
(form, files)
},
Err(_) => {
default
}
}
},
_ => {
default
}
}
}
}