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|
use ggez::filesystem::File;
use std::io::BufReader;
use xml::reader::{
EventReader,
XmlEvent::{self, EndElement, StartElement},
};
pub struct XMLElements {
pub events: Vec<XmlEvent>,
}
impl XMLElements {
pub fn new(file: File) -> XMLElements {
XMLElements {
events: EventReader::new(BufReader::new(file))
.into_iter()
.map(Result::unwrap)
.collect(),
}
}
pub fn get_element(&self, element_name: &str) -> XmlEvent {
self.events
.clone()
.into_iter()
.find(|e| {
if let StartElement { name, .. } = e {
name.local_name == element_name
} else {
false
}
})
.unwrap()
}
pub fn get_children(&self, element: &XmlEvent, children_name: &str) -> Vec<XmlEvent> {
let start_index = self.events.iter().position(|e| e == element).unwrap();
let element_name = if let StartElement { name, .. } = element {
&name.local_name
} else {
""
};
let end_index = self.events[start_index..]
.iter()
.position(|e| {
if let EndElement { name } = e {
element_name == name.local_name
} else {
false
}
})
.unwrap()
+ start_index;
self.events[start_index..end_index]
.iter()
.cloned()
.filter(|e| {
if let StartElement { name, .. } = e {
name.local_name == children_name
} else {
false
}
})
.collect()
}
pub fn get_elements(&self, element_name: &str) -> Vec<XmlEvent> {
self.events
.clone()
.into_iter()
.filter(|e| {
if let StartElement { name, .. } = e {
name.local_name == element_name
} else {
false
}
})
.collect()
}
pub fn get_element_attribute(
&self,
element_name: &str,
attribute_name: &str,
) -> Result<String, ()> {
let element = self.get_element(element_name);
XMLElements::get_attribute(&element, attribute_name)
}
pub fn get_attribute(element: &XmlEvent, attribute_name: &str) -> Result<String, ()> {
if let StartElement { attributes, .. } = element {
Ok(attributes
.iter()
.find(|a| a.name.local_name == attribute_name)
.unwrap()
.value
.clone())
} else {
Err(())
}
}
pub fn get_attribute_value(elements: &[XmlEvent], attribute_name: &str) -> Result<String, ()> {
let element = elements
.iter()
.find(|e| {
if let StartElement { attributes, .. } = e {
attributes.iter().any(|a| a.value == attribute_name)
} else {
false
}
})
.ok_or(())?;
if let StartElement { attributes, .. } = element {
Ok(attributes
.iter()
.find(|a| a.name.local_name == "value")
.unwrap()
.value
.clone())
} else {
Err(())
}
}
}
|
