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/*
An XML 1.0 / 1.1 parser
Copyright 2021-2022 Jeroen van Rijn <nom@duclavier.com>.
Made available under Odin's BSD-3 license.
This file contains helper functions.
*/
package xml
// Find parent's nth child with a given ident.
find_child_by_ident :: proc(doc: ^Document, parent_id: Element_ID, ident: string, nth := 0) -> (res: Element_ID, found: bool) {
tag := doc.elements[parent_id]
count := 0
for child_id in tag.children {
child := doc.elements[child_id]
/*
Skip commments. They have no name.
*/
if child.kind != .Element { continue }
/*
If the ident matches and it's the nth such child, return it.
*/
if child.ident == ident {
if count == nth { return child_id, true }
count += 1
}
}
return 0, false
}
// Find an attribute by key.
find_attribute_val_by_key :: proc(doc: ^Document, parent_id: Element_ID, key: string) -> (val: string, found: bool) {
tag := doc.elements[parent_id]
for attr in tag.attribs {
/*
If the ident matches, we're done. There can only ever be one attribute with the same name.
*/
if attr.key == key { return attr.val, true }
}
return "", false
}
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