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| 1 | +use base64::Engine; |
| 2 | +use base64::engine::general_purpose::STANDARD as BASE64; |
| 3 | +use graph_craft::application_io::{Resource, ResourceHash}; |
| 4 | +use std::collections::HashMap; |
| 5 | +use std::fmt; |
| 6 | + |
| 7 | +#[derive(Clone, Default, Debug, PartialEq)] |
| 8 | +pub struct EmbeddedResources { |
| 9 | + resources: HashMap<ResourceHash, Resource>, |
| 10 | +} |
| 11 | + |
| 12 | +impl EmbeddedResources { |
| 13 | + pub fn new() -> Self { |
| 14 | + Self::default() |
| 15 | + } |
| 16 | + |
| 17 | + pub fn insert(&mut self, hash: ResourceHash, resource: Resource) -> Option<Resource> { |
| 18 | + self.resources.insert(hash, resource) |
| 19 | + } |
| 20 | + |
| 21 | + pub fn get(&self, hash: &ResourceHash) -> Option<&Resource> { |
| 22 | + self.resources.get(hash) |
| 23 | + } |
| 24 | + |
| 25 | + pub fn remove(&mut self, hash: &ResourceHash) -> Option<Resource> { |
| 26 | + self.resources.remove(hash) |
| 27 | + } |
| 28 | + |
| 29 | + pub fn contains(&self, hash: &ResourceHash) -> bool { |
| 30 | + self.resources.contains_key(hash) |
| 31 | + } |
| 32 | + |
| 33 | + pub fn len(&self) -> usize { |
| 34 | + self.resources.len() |
| 35 | + } |
| 36 | + |
| 37 | + pub fn is_empty(&self) -> bool { |
| 38 | + self.resources.is_empty() |
| 39 | + } |
| 40 | + |
| 41 | + pub fn iter(&self) -> impl Iterator<Item = (&ResourceHash, &Resource)> { |
| 42 | + self.resources.iter() |
| 43 | + } |
| 44 | + |
| 45 | + pub fn hashes(&self) -> impl Iterator<Item = &ResourceHash> { |
| 46 | + self.resources.keys() |
| 47 | + } |
| 48 | +} |
| 49 | + |
| 50 | +impl FromIterator<(ResourceHash, Resource)> for EmbeddedResources { |
| 51 | + fn from_iter<T: IntoIterator<Item = (ResourceHash, Resource)>>(iter: T) -> Self { |
| 52 | + Self { resources: iter.into_iter().collect() } |
| 53 | + } |
| 54 | +} |
| 55 | + |
| 56 | +impl IntoIterator for EmbeddedResources { |
| 57 | + type Item = (ResourceHash, Resource); |
| 58 | + type IntoIter = std::collections::hash_map::IntoIter<ResourceHash, Resource>; |
| 59 | + |
| 60 | + fn into_iter(self) -> Self::IntoIter { |
| 61 | + self.resources.into_iter() |
| 62 | + } |
| 63 | +} |
| 64 | + |
| 65 | +impl serde::Serialize for EmbeddedResources { |
| 66 | + fn serialize<S: serde::Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> { |
| 67 | + use serde::ser::SerializeMap; |
| 68 | + |
| 69 | + let human_readable = serializer.is_human_readable(); |
| 70 | + let mut map = serializer.serialize_map(Some(self.resources.len()))?; |
| 71 | + for (hash, resource) in &self.resources { |
| 72 | + let bytes: &[u8] = resource.as_ref(); |
| 73 | + if human_readable { |
| 74 | + map.serialize_entry(hash, &BASE64.encode(bytes))?; |
| 75 | + } else { |
| 76 | + map.serialize_entry(hash, serde_bytes::Bytes::new(bytes))?; |
| 77 | + } |
| 78 | + } |
| 79 | + map.end() |
| 80 | + } |
| 81 | +} |
| 82 | + |
| 83 | +impl<'de> serde::Deserialize<'de> for EmbeddedResources { |
| 84 | + fn deserialize<D: serde::Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> { |
| 85 | + struct EmbeddedResourcesVisitor { |
| 86 | + human_readable: bool, |
| 87 | + } |
| 88 | + |
| 89 | + impl<'de> serde::de::Visitor<'de> for EmbeddedResourcesVisitor { |
| 90 | + type Value = EmbeddedResources; |
| 91 | + |
| 92 | + fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { |
| 93 | + formatter.write_str("a map of ResourceHash to resource bytes") |
| 94 | + } |
| 95 | + |
| 96 | + fn visit_map<A: serde::de::MapAccess<'de>>(self, mut map: A) -> Result<Self::Value, A::Error> { |
| 97 | + let mut resources = HashMap::with_capacity(map.size_hint().unwrap_or(0)); |
| 98 | + while let Some(hash) = map.next_key::<ResourceHash>()? { |
| 99 | + let resource = if self.human_readable { |
| 100 | + let encoded: String = map.next_value()?; |
| 101 | + let bytes = BASE64.decode(&encoded).map_err(serde::de::Error::custom)?; |
| 102 | + Resource::new(bytes) |
| 103 | + } else { |
| 104 | + let bytes: serde_bytes::ByteBuf = map.next_value()?; |
| 105 | + Resource::new(bytes.into_vec()) |
| 106 | + }; |
| 107 | + resources.insert(hash, resource); |
| 108 | + } |
| 109 | + Ok(EmbeddedResources { resources }) |
| 110 | + } |
| 111 | + } |
| 112 | + |
| 113 | + let human_readable = deserializer.is_human_readable(); |
| 114 | + deserializer.deserialize_map(EmbeddedResourcesVisitor { human_readable }) |
| 115 | + } |
| 116 | +} |
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