parse nested ICS objects
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11dab8a049
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@ -15,6 +15,7 @@ pub type Props = Vec<(String, String)>;
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pub struct Object {
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pub name: String,
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pub content: HashMap<String, (Props, String)>,
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pub children: Vec<Box<Object>>,
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}
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impl<'a> GetValue<'a, &'a str> for Object {
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@ -31,6 +32,7 @@ impl<'a> GetValue<'a, String> for Object {
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}
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}
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// TODO: TZID, offset
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impl<'a> GetValue<'a, NaiveDateTime> for Object {
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fn get(&self, key: &'_ str) -> Option<NaiveDateTime> {
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let s = self.get(key)?;
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@ -5,22 +5,20 @@ use super::tokenizer::{Tokenizer, Token};
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pub struct Parser {
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tokenizer: Tokenizer,
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object_name: Option<String>,
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current_key: Option<String>,
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current_prop: Option<String>,
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props: Props,
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content: HashMap<String, (Props, String)>,
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objects: Vec<Object>,
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}
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impl Parser {
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pub fn new() -> Self {
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Parser {
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tokenizer: Tokenizer::new(),
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object_name: None,
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current_key: None,
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current_prop: None,
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props: vec![],
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content: HashMap::new(),
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objects: vec![],
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}
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}
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@ -31,8 +29,7 @@ impl Parser {
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let current_key = &mut self.current_key;
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let current_prop = &mut self.current_prop;
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let props = &mut self.props;
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let object_name = &mut self.object_name;
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let content = &mut self.content;
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let objects = &mut self.objects;
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self.tokenizer.feed(input, |token| {
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match token {
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Token::Key(key) => *current_key = Some(key),
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@ -48,15 +45,29 @@ impl Parser {
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}
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if compare(current_key, "BEGIN") {
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*object_name = Some(value);
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content.clear();
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objects.push(Object {
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name: value,
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content: HashMap::new(),
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children: vec![],
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});
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} else if compare(current_key, "END") {
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let object_name = replace(object_name, None);
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let content = replace(content, HashMap::new());
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object_name.map(|name| f(Object { name, content }));
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} else {
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while objects.len() > 1 {
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let object = objects.pop().unwrap();
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let end = value == object.name;
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let objects_len = objects.len();
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objects[objects_len - 1].children.push(Box::new(object));
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if end {
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break;
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}
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}
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if objects.len() == 1 {
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f(objects.remove(0));
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}
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} else if objects.len() > 0 {
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let props = replace(props, vec![]);
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let key = replace(current_key, None);
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let objects_len = objects.len();
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let content = &mut objects[objects_len - 1].content;
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key.map(|key| content.insert(key, (props, value)));
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}
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}
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@ -90,6 +101,66 @@ END:VEVENT
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.cloned()
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.map(|(k, v)| (k.to_owned(), (vec![], v.to_owned())))
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.collect(),
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children: vec![],
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}));
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}
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#[test]
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fn parse_props() {
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let mut p = Parser::new();
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let mut obj = None;
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p.feed(b"BEGIN:VEVENT
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SUMMARY:Test event
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DTSTART;TZID=Europe/Berlin:19700101
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END:VEVENT
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", |o| {
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assert!(obj.is_none());
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obj = Some(o);
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});
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assert_eq!(obj, Some(Object {
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name: "VEVENT".to_owned(),
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content: [
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("SUMMARY".to_owned(), (vec![], "Test event".to_owned())),
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("DTSTART".to_owned(), (vec![("TZID".to_owned(), "Europe/Berlin".to_owned())], "19700101".to_owned()))
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].iter().cloned().collect(),
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children: vec![],
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}));
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}
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#[test]
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fn parse_nested() {
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let mut p = Parser::new();
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let mut obj = None;
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p.feed(b"BEGIN:VEVENT
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SUMMARY:Test event
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DTSTART:19700101
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BEGIN:VALARM
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ACTION:NONE
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END:VALARM
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END:VEVENT
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", |o| {
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assert!(obj.is_none());
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obj = Some(o);
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});
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assert_eq!(obj, Some(Object {
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name: "VEVENT".to_owned(),
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content: [("SUMMARY", "Test event"),
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("DTSTART", "19700101")]
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.iter()
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.cloned()
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.map(|(k, v)| (k.to_owned(), (vec![], v.to_owned())))
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.collect(),
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children: vec![Box::new(Object {
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name: "VALARM".to_owned(),
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content: [("ACTION", "NONE")]
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.iter()
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.cloned()
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.map(|(k, v)| (k.to_owned(), (vec![], v.to_owned())))
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.collect(),
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children: vec![],
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})],
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}));
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}
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}
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@ -141,8 +141,11 @@ impl Resources {
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len if len > 0 => {
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let data = &buf[..len];
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p.feed(data, |obj| {
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let dbg = format!("{:?}", obj);
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if let Some(event) = obj_to_event(cal_opts.url.clone(), obj) {
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events.push(event);
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} else {
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println!("ignore {}", dbg);
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}
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});
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}
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@ -156,7 +159,6 @@ impl Resources {
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.filter(schema::events::dsl::calendar.eq(cal_opts.url))
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.execute(&db)?;
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for event in events {
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// println!("insert {:?}", event);
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diesel::insert_into(schema::events::dsl::events)
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.values(&event)
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.execute(&db)?;
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