X-Git-Url: https://git.r.bdr.sh/rbdr/blog/blobdiff_plain/2998247083406f914b3647cedd19abf5507bf2c6..f6a545b00a4046879b7cc25c06c37bb6b6880b43:/src/metadata.rs diff --git a/src/metadata.rs b/src/metadata.rs index 0e3c25a..b2f67c5 100644 --- a/src/metadata.rs +++ b/src/metadata.rs @@ -2,44 +2,25 @@ use std::fs::File; use std::path::PathBuf; use std::io::Read; use std::time::{SystemTime, UNIX_EPOCH}; +use time::{OffsetDateTime, format_description::well_known::Rfc2822}; +use serde::{Serialize, Deserialize}; +use serde_json; +#[derive(Serialize, Deserialize)] pub struct Metadata { pub id: String, - pub created_on: u128 + #[serde(alias = "createdOn")] + pub created_on: u64 } impl Metadata { - pub fn serialize(&self) -> String { - format!(r#"{{ - "id": "{}", - "created_on": {} -}}"#, self.id, self.created_on) - } - - pub fn deserialize(input: &str) -> Option { - let clean_input = input - .chars() - .filter(|c| !c.is_whitespace()) - .collect::(); - - let id = Metadata::read_field(&clean_input, "id")?; - let created_on = Metadata::read_field(&clean_input, "created_on") - // createdOn kept for compatibility with blog < 7.0.0 - .or_else(|| Metadata::read_field(&clean_input, "createdOn"))?; - - Some(Metadata { - id, - created_on: created_on.parse().ok()? - }) - } - pub fn read_or_create(file_path: &PathBuf) -> Metadata { match Metadata::read_metadata_file(file_path) { Some(metadata) => metadata, None => { let timestamp = SystemTime::now() .duration_since(UNIX_EPOCH) - .map(|duration| duration.as_millis() as u128) + .map(|duration| duration.as_millis() as u64) .unwrap_or_else(|_| 0); return Metadata { id: timestamp.to_string(), @@ -49,26 +30,18 @@ impl Metadata { } } + pub fn created_on_utc(&self) -> Option { + let date = OffsetDateTime::from_unix_timestamp_nanos( + (self.created_on * 1_000_000).into() + ).ok()?; + return date.format(&Rfc2822).ok(); + } + + fn read_metadata_file(file_path: &PathBuf) -> Option { let mut file = File::open(file_path).ok()?; let mut contents = String::new(); file.read_to_string(&mut contents).ok()?; - Metadata::deserialize(&contents) - } - - - fn read_field(input: &str, field_name: &str) -> Option { - let key_pattern = format!(r#""{}":"#, field_name); - input.find(&key_pattern) - .and_then(|start| { - let value_start = start + key_pattern.len(); - let value_end = input[value_start..] - .find(|c: char| c == ',' || c == '}' || c == '\n') - .unwrap_or_else(|| input[value_start..].len()) + value_start; - - let raw_value = &input[value_start..value_end]; - let value = raw_value.trim_matches('"').to_string(); - Some(value) - }) + serde_json::from_str(&contents).ok() } }