pub fn add_file<P: AsRef<path::Path>>(&mut self, field_name: String, path: P) -> io::Result<()> {
        let original_len = self.storage.len();

        let path = path.as_ref();

        let mut file = fs::File::open(&path)?;
        let file_name = match path.file_name().and_then(|file_name| file_name.to_str()) {
            Some(file_name) => Filename::with_name(file_name.to_string()),
            None => Filename::new(),
        };
        let file_meta = file.metadata()?;
        let file_len = file_meta.len() as usize;
        let mime = mime_guess::from_path(path).first_or_octet_stream();

        let content_disposition = ContentDisposition::FormData(Some(field_name), file_name);
        let _ = write!(&mut self.storage, "--{}\r\nContent-Disposition: {}\r\n", self.boundary, content_disposition);
        let _ = write!(&mut self.storage, "Content-Type: {}\r\n\r\n", mime);

        self.storage.reserve(file_len);
        //If error happens we must clean up
        if let Err(error) = io::copy(&mut file, &mut self.storage) {
            self.storage.split_off(original_len);
            return Err(error);
        }

        let _ = write!(&mut self.storage, "\r\n--{}\r\n", self.boundary);

        Ok(())
    }
///Adds file to the form.
///
///# Note
///
///It reads entire file into buffer.
///
///# IO Error
///
///If error happens file copying content of file,
///then content of storage shall be restored to its state
///before starting the operation.
Adds file to the form.
Adds file to the form .
pub fn add_file<P: AsRef<path::Path>>(&mut self, field_name: String, path: P) -> io::Result<()> {
        let original_len = self.storage.len();
        let path = path.as_ref();
        let mut file = fs::File::open(&path)?;
        let file_name = match path.file_name().and_then(|file_name| file_name.to_str()) {
            Some(file_name) => Filename::with_name(file_name.to_string()),
            None => Filename::new(),
        };
        let file_meta = file.metadata()?;
        let file_len = file_meta.len() as usize;
        let mime = mime_guess::from_path(path).first_or_octet_stream();
        let content_disposition = ContentDisposition::FormData(Some(field_name), file_name);
        let _ = write!(&mut self.storage, "--{}\r\nContent-Disposition: {}\r\n", self.boundary, content_disposition);
        let _ = write!(&mut self.storage, "Content-Type: {}\r\n\r\n", mime);
        self.storage.reserve(file_len);
        //If error happens we must clean up
        if let Err(error) = io::copy(&mut file, &mut self.storage) {
            self.storage.split_off(original_len);
            return Err(error);
        }
        let _ = write!(&mut self.storage, "\r\n--{}\r\n", self.boundary);
        Ok(())
    }
pub fn add_file < P : AsRef < path :: Path > > ( & mut self , field_name : String , path : P ) -> io :: Result < ( ) > { let original_len = self . storage . len ( ) ; let path = path . as_ref ( ) ; let mut file = fs :: File :: open ( & path ) ? ; let file_name = match path . file_name ( ) . and_then ( | file_name | file_name . to_str ( ) ) { Some ( file_name ) => Filename :: with_name ( file_name . to_string ( ) ) , None => Filename :: new ( ) , } ; let file_meta = file . metadata ( ) ? ; let file_len = file_meta . len ( ) as usize ; let mime = mime_guess :: from_path ( path ) . first_or_octet_stream ( ) ; let content_disposition = ContentDisposition :: FormData ( Some ( field_name ) , file_name ) ; let _ = write ! ( mut self storage " \r \n \r \n " self boundary content_disposition ) ; let _ = write ! ( mut self storage " \r \n \r \n " mime ) ; self . storage . reserve ( file_len ) ; //If error happens we must clean up if let Err ( error ) = io :: copy ( & mut file , & mut self . storage ) { self . storage . split_off ( original_len ) ; return Err ( error ) ; } let _ = write ! ( mut self storage " \r \n \r \n " self boundary ) ; Ok ( ( ) ) }
Adds file to the form.
Adds file to the form .
&mut self
field_name
String
path
P
note
It reads entire file into buffer.
It reads entire file into buffer .
io error
If error happens file copying content of file,
then content of storage shall be restored to its state
before starting the operation.
If error happens file copying content of file then content of storage shall be restored to its state before starting the operation .