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feat: add EPG output normalization (#785)

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* docs: document EPG output normalization

* feat: normalize EPG output
This commit is contained in:
knylbyte
2026-07-11 09:59:23 +02:00
committed by GitHub
parent 01c4ca2616
commit 18ae03ba1a
15 changed files with 1554 additions and 183 deletions
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backend/src/processing/processor/epg.rs
+1 -24
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@@ -2,6 +2,7 @@ use crate::model::Epg;
use crate::model::{EpgConfig, EpgSmartMatchConfig};
use crate::model::FetchedPlaylist;
use crate::processing::parser::xmltv::normalize_channel_name;
use crate::utils::with_folded_epg_id;
use log::{debug, trace, warn};
use rphonetic::{DoubleMetaphone, Encoder};
use std::collections::{HashMap, HashSet};
@@ -9,30 +10,6 @@ use shared::model::{EpgSmartMatchConfigDto, PlaylistItem, XtreamCluster};
use std::sync::Arc;
use shared::utils::Internable;
const EPG_ID_STACK_FOLD_LEN: usize = 128;
/// Runs `f` with an ASCII-lowercased EPG id.
///
/// Non-ASCII characters are left unchanged, matching `eq_ignore_ascii_case` semantics.
pub(crate) fn with_folded_epg_id<R>(id: &str, f: impl FnOnce(&str) -> R) -> R {
if !id.bytes().any(|byte| byte.is_ascii_uppercase()) {
return f(id);
}
if id.len() <= EPG_ID_STACK_FOLD_LEN {
let mut buf = [0_u8; EPG_ID_STACK_FOLD_LEN];
for (out, byte) in buf.iter_mut().zip(id.bytes()) {
*out = byte.to_ascii_lowercase();
}
let folded = std::str::from_utf8(&buf[..id.len()]);
return f(folded.unwrap_or(id));
}
let mut folded = String::with_capacity(id.len());
folded.extend(id.chars().map(|ch| ch.to_ascii_lowercase()));
f(&folded)
}
pub struct EpgIdCache {
/// Membership set of the epg ids collected from playlist channels.
/// Keys are stored ASCII-lowercased so guide-id matching is case-insensitive.