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use std::str::FromStr;
use crate::{MultipartFormDataType, Repetition, mime::Mime};
const DEFAULT_IN_MEMORY_DATA_LIMIT: u64 = 1024 * 1024;
const DEFAULT_FILE_DATA_LIMIT: u64 = 8 * 1024 * 1024;
/// The guarder for fields.
#[derive(Debug, Clone)]
pub struct MultipartFormDataField<'a> {
/// The type of this field.
pub typ: MultipartFormDataType,
/// The name of this field.
pub field_name: &'a str,
/// The size limit for this field.
pub size_limit: u64,
/// Content type filters for this field.
///
/// Wildcards are supported for the type and subtype, while parameters such as `charset` are ignored.
/// A field without a `Content-Type` header never matches any filter.
pub content_type: Option<Vec<Mime>>,
/// To define this `MultipartFormDataField` instance can be used how many times.
pub repetition: Repetition,
}
impl<'a> MultipartFormDataField<'a> {
/// Create a text field, the default size_limit is 1 MiB.
#[inline]
#[must_use]
pub fn text<S: ?Sized + AsRef<str>>(field_name: &S) -> MultipartFormDataField<'_> {
MultipartFormDataField {
typ: MultipartFormDataType::Text,
field_name: field_name.as_ref(),
size_limit: DEFAULT_IN_MEMORY_DATA_LIMIT,
content_type: None,
repetition: Repetition::default(),
}
}
/// Create a raw field, the default size_limit is 1 MiB.
///
/// An alias of [`MultipartFormDataField::raw`].
#[inline]
#[must_use]
pub fn bytes<S: ?Sized + AsRef<str>>(field_name: &S) -> MultipartFormDataField<'_> {
Self::raw(field_name.as_ref())
}
/// Create a raw field, the default size_limit is 1 MiB.
#[inline]
#[must_use]
pub fn raw<S: ?Sized + AsRef<str>>(field_name: &S) -> MultipartFormDataField<'_> {
MultipartFormDataField {
typ: MultipartFormDataType::Raw,
field_name: field_name.as_ref(),
size_limit: DEFAULT_IN_MEMORY_DATA_LIMIT,
content_type: None,
repetition: Repetition::default(),
}
}
/// Create a file field, the default size_limit is 8 MiB.
#[inline]
#[must_use]
pub fn file<S: ?Sized + AsRef<str>>(field_name: &S) -> MultipartFormDataField<'_> {
MultipartFormDataField {
typ: MultipartFormDataType::File,
field_name: field_name.as_ref(),
size_limit: DEFAULT_FILE_DATA_LIMIT,
content_type: None,
repetition: Repetition::default(),
}
}
/// Set the size_limit for this field.
#[inline]
#[must_use]
pub fn size_limit(mut self, size_limit: u64) -> MultipartFormDataField<'a> {
self.size_limit = size_limit;
self
}
/// Add a content type filter for this field. This method can be used multiple times to use multiple content type filters.
///
/// Only the type and subtype are matched, while parameters such as `charset` are ignored.
/// A field without a `Content-Type` header never matches any filter.
///
/// Passing `None` removes all the filters added so far.
#[inline]
#[must_use]
pub fn content_type(mut self, content_type: Option<Mime>) -> MultipartFormDataField<'a> {
match content_type {
Some(content_type) => match self.content_type.as_mut() {
Some(v) => {
v.push(content_type);
},
None => {
self.content_type = Some(vec![content_type]);
},
},
None => self.content_type = None,
}
self
}
/// Add a content type filter for this field. This method can be used multiple times to use multiple content type filters.
///
/// Only the type and subtype are matched, while parameters such as `charset` are ignored.
/// A field without a `Content-Type` header never matches any filter.
///
/// Passing `None` removes all the filters added so far.
#[inline]
pub fn content_type_by_string<S: AsRef<str>>(
mut self,
content_type: Option<S>,
) -> Result<MultipartFormDataField<'a>, mime::FromStrError> {
match content_type {
Some(content_type) => {
let content_type = Mime::from_str(content_type.as_ref())?;
match self.content_type.as_mut() {
Some(v) => {
v.push(content_type);
},
None => {
self.content_type = Some(vec![content_type]);
},
}
},
None => self.content_type = None,
}
Ok(self)
}
/// Set the repetition for this field.
#[inline]
#[must_use]
pub fn repetition(mut self, repetition: Repetition) -> MultipartFormDataField<'a> {
self.repetition = repetition;
self
}
}