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Add tags_of_file() to extract tags from a File

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Matthias Beyer 2015-11-29 14:23:54 +01:00
parent a6ed8e1080
commit 42181afde5
1 changed files with 39 additions and 0 deletions
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39
src/module/bm/header.rs
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@ -1,5 +1,6 @@
use storage::file::FileHeaderSpec as FHS;
use storage::file::FileHeaderData as FHD;
use std::ops::Deref;
pub fn get_spec() -> FHS {
FHS::Map { keys: vec![ url_key(), tags_key() ] }
@ -38,3 +39,41 @@ fn build_tag_array(tags: &Vec<String>) -> FHD {
FHD::Array { values: Box::new(texttags) }
}
pub fn get_tags_from_header(header: &FHD) -> Vec<String> {
let mut tags : Vec<String> = vec![];
fn match_array(a: &Box<FHD>) -> Vec<String> {
let mut tags : Vec<String> = vec![];
match a.deref() {
&FHD::Array{values: ref vs} => {
let values : Vec<FHD> = vs.deref().clone();
for value in values {
match value {
FHD::Text(t) => tags.push(t),
_ => warn!("Malformed Header Data: Expected Text, found non-Text"),
}
}
}
_ => warn!("Malformed Header Data: Expected Array, found non-Array"),
}
tags
}
match header {
&FHD::Map{keys: ref ks} => {
let keys : Vec<FHD> = ks.clone();
for key in keys {
match key {
FHD::Key{name: _, value: ref v} => return match_array(v),
_ => warn!("Malformed Header Data: Expected Key, found non-Key"),
}
}
},
_ => warn!("Malformed Header Data: Expected Map, found non-Map"),
}
tags
}