270 lines
9.3 KiB
Rust
270 lines
9.3 KiB
Rust
// Copyright (c) 2017 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
|
||
//
|
||
// This Source Code Form is subject to the terms of the Mozilla Public
|
||
// License, v. 2.0. If a copy of the MPL was not distributed with this
|
||
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
||
|
||
use try_from::TryFrom;
|
||
use std::str::FromStr;
|
||
|
||
use minidom::{Element, IntoAttributeValue};
|
||
|
||
use error::Error;
|
||
use ns;
|
||
|
||
use media_element::MediaElement;
|
||
|
||
#[derive(Debug, Clone)]
|
||
pub struct Option_ {
|
||
pub label: Option<String>,
|
||
pub value: String,
|
||
}
|
||
|
||
impl TryFrom<Element> for Option_ {
|
||
type Err = Error;
|
||
|
||
fn try_from(elem: Element) -> Result<Option_, Error> {
|
||
check_self!(elem, "option", ns::DATA_FORMS);
|
||
check_no_unknown_attributes!(elem, "option", ["label"]);
|
||
let mut value = None;
|
||
for child in elem.children() {
|
||
if !child.is("value", ns::DATA_FORMS) {
|
||
return Err(Error::ParseError("Non-value element in option element"));
|
||
}
|
||
if value.is_some() {
|
||
return Err(Error::ParseError("More than one value element in option element"));
|
||
}
|
||
value = Some(child.text());
|
||
}
|
||
Ok(Option_ {
|
||
label: get_attr!(elem, "label", optional),
|
||
value: value.ok_or(Error::ParseError("No value element in option element"))?,
|
||
})
|
||
}
|
||
}
|
||
|
||
impl From<Option_> for Element {
|
||
fn from(option: Option_) -> Element {
|
||
Element::builder("option")
|
||
.ns(ns::DATA_FORMS)
|
||
.attr("label", option.label)
|
||
.append(Element::builder("value")
|
||
.ns(ns::DATA_FORMS)
|
||
.append(option.value)
|
||
.build())
|
||
.build()
|
||
}
|
||
}
|
||
|
||
generate_attribute!(FieldType, "type", {
|
||
Boolean => "boolean",
|
||
Fixed => "fixed",
|
||
Hidden => "hidden",
|
||
JidMulti => "jid-multi",
|
||
JidSingle => "jid-single",
|
||
ListMulti => "list-multi",
|
||
ListSingle => "list-single",
|
||
TextMulti => "text-multi",
|
||
TextPrivate => "text-private",
|
||
TextSingle => "text-single",
|
||
}, Default = TextSingle);
|
||
|
||
#[derive(Debug, Clone)]
|
||
pub struct Field {
|
||
pub var: String,
|
||
pub type_: FieldType,
|
||
pub label: Option<String>,
|
||
pub required: bool,
|
||
pub options: Vec<Option_>,
|
||
pub values: Vec<String>,
|
||
pub media: Vec<MediaElement>,
|
||
}
|
||
|
||
impl Field {
|
||
fn is_list(&self) -> bool {
|
||
self.type_ == FieldType::ListSingle ||
|
||
self.type_ == FieldType::ListMulti
|
||
}
|
||
}
|
||
|
||
impl TryFrom<Element> for Field {
|
||
type Err = Error;
|
||
|
||
fn try_from(elem: Element) -> Result<Field, Error> {
|
||
check_self!(elem, "field", ns::DATA_FORMS);
|
||
check_no_unknown_attributes!(elem, "field", ["label", "type", "var"]);
|
||
let mut field = Field {
|
||
var: get_attr!(elem, "var", required),
|
||
type_: get_attr!(elem, "type", default),
|
||
label: get_attr!(elem, "label", optional),
|
||
required: false,
|
||
options: vec!(),
|
||
values: vec!(),
|
||
media: vec!(),
|
||
};
|
||
for element in elem.children() {
|
||
if element.is("value", ns::DATA_FORMS) {
|
||
check_no_children!(element, "value");
|
||
check_no_attributes!(element, "value");
|
||
field.values.push(element.text());
|
||
} else if element.is("required", ns::DATA_FORMS) {
|
||
if field.required {
|
||
return Err(Error::ParseError("More than one required element."));
|
||
}
|
||
check_no_children!(element, "required");
|
||
check_no_attributes!(element, "required");
|
||
field.required = true;
|
||
} else if element.is("option", ns::DATA_FORMS) {
|
||
if !field.is_list() {
|
||
return Err(Error::ParseError("Option element found in non-list field."));
|
||
}
|
||
let option = Option_::try_from(element.clone())?;
|
||
field.options.push(option);
|
||
} else if element.is("media", ns::MEDIA_ELEMENT) {
|
||
let media_element = MediaElement::try_from(element.clone())?;
|
||
field.media.push(media_element);
|
||
} else {
|
||
return Err(Error::ParseError("Field child isn’t a value, option or media element."));
|
||
}
|
||
}
|
||
Ok(field)
|
||
}
|
||
}
|
||
|
||
impl From<Field> for Element {
|
||
fn from(field: Field) -> Element {
|
||
Element::builder("field")
|
||
.ns(ns::DATA_FORMS)
|
||
.attr("var", field.var)
|
||
.attr("type", field.type_)
|
||
.attr("label", field.label)
|
||
.append(if field.required { Some(Element::builder("required").ns(ns::DATA_FORMS).build()) } else { None })
|
||
.append(field.options)
|
||
.append(field.values.into_iter().map(|value| {
|
||
Element::builder("value").ns(ns::DATA_FORMS).append(value).build()
|
||
}).collect::<Vec<_>>())
|
||
.append(field.media)
|
||
.build()
|
||
}
|
||
}
|
||
|
||
generate_attribute!(DataFormType, "type", {
|
||
Cancel => "cancel",
|
||
Form => "form",
|
||
Result_ => "result",
|
||
Submit => "submit",
|
||
});
|
||
|
||
#[derive(Debug, Clone)]
|
||
pub struct DataForm {
|
||
pub type_: DataFormType,
|
||
pub form_type: Option<String>,
|
||
pub title: Option<String>,
|
||
pub instructions: Option<String>,
|
||
pub fields: Vec<Field>,
|
||
}
|
||
|
||
impl TryFrom<Element> for DataForm {
|
||
type Err = Error;
|
||
|
||
fn try_from(elem: Element) -> Result<DataForm, Error> {
|
||
check_self!(elem, "x", ns::DATA_FORMS);
|
||
check_no_unknown_attributes!(elem, "x", ["type"]);
|
||
let type_ = get_attr!(elem, "type", required);
|
||
let mut form = DataForm {
|
||
type_: type_,
|
||
form_type: None,
|
||
title: None,
|
||
instructions: None,
|
||
fields: vec!(),
|
||
};
|
||
for child in elem.children() {
|
||
if child.is("title", ns::DATA_FORMS) {
|
||
if form.title.is_some() {
|
||
return Err(Error::ParseError("More than one title in form element."));
|
||
}
|
||
check_no_children!(child, "title");
|
||
check_no_attributes!(child, "title");
|
||
form.title = Some(child.text());
|
||
} else if child.is("instructions", ns::DATA_FORMS) {
|
||
if form.instructions.is_some() {
|
||
return Err(Error::ParseError("More than one instructions in form element."));
|
||
}
|
||
check_no_children!(child, "instructions");
|
||
check_no_attributes!(child, "instructions");
|
||
form.instructions = Some(child.text());
|
||
} else if child.is("field", ns::DATA_FORMS) {
|
||
let field = Field::try_from(child.clone())?;
|
||
if field.var == "FORM_TYPE" && field.type_ == FieldType::Hidden {
|
||
if form.form_type.is_some() {
|
||
return Err(Error::ParseError("More than one FORM_TYPE in a data form."));
|
||
}
|
||
if field.values.len() != 1 {
|
||
return Err(Error::ParseError("Wrong number of values in FORM_TYPE."));
|
||
}
|
||
form.form_type = Some(field.values[0].clone());
|
||
}
|
||
form.fields.push(field);
|
||
} else {
|
||
return Err(Error::ParseError("Unknown child in data form element."));
|
||
}
|
||
}
|
||
Ok(form)
|
||
}
|
||
}
|
||
|
||
impl From<DataForm> for Element {
|
||
fn from(form: DataForm) -> Element {
|
||
Element::builder("x")
|
||
.ns(ns::DATA_FORMS)
|
||
.attr("type", form.type_)
|
||
.append(form.title.map(|title| Element::builder("title").ns(ns::DATA_FORMS).append(title)))
|
||
.append(form.instructions.map(|text| Element::builder("instructions").ns(ns::DATA_FORMS).append(text)))
|
||
.append(form.fields)
|
||
.build()
|
||
}
|
||
}
|
||
|
||
#[cfg(test)]
|
||
mod tests {
|
||
use super::*;
|
||
|
||
#[test]
|
||
fn test_simple() {
|
||
let elem: Element = "<x xmlns='jabber:x:data' type='result'/>".parse().unwrap();
|
||
let form = DataForm::try_from(elem).unwrap();
|
||
assert_eq!(form.type_, DataFormType::Result_);
|
||
assert!(form.form_type.is_none());
|
||
assert!(form.fields.is_empty());
|
||
}
|
||
|
||
#[test]
|
||
fn test_invalid() {
|
||
let elem: Element = "<x xmlns='jabber:x:data'/>".parse().unwrap();
|
||
let error = DataForm::try_from(elem).unwrap_err();
|
||
let message = match error {
|
||
Error::ParseError(string) => string,
|
||
_ => panic!(),
|
||
};
|
||
assert_eq!(message, "Required attribute 'type' missing.");
|
||
|
||
let elem: Element = "<x xmlns='jabber:x:data' type='coucou'/>".parse().unwrap();
|
||
let error = DataForm::try_from(elem).unwrap_err();
|
||
let message = match error {
|
||
Error::ParseError(string) => string,
|
||
_ => panic!(),
|
||
};
|
||
assert_eq!(message, "Unknown value for 'type' attribute.");
|
||
}
|
||
|
||
#[test]
|
||
fn test_wrong_child() {
|
||
let elem: Element = "<x xmlns='jabber:x:data' type='cancel'><coucou/></x>".parse().unwrap();
|
||
let error = DataForm::try_from(elem).unwrap_err();
|
||
let message = match error {
|
||
Error::ParseError(string) => string,
|
||
_ => panic!(),
|
||
};
|
||
assert_eq!(message, "Unknown child in data form element.");
|
||
}
|
||
}
|