From a45a399569c2ae1b0906d5790579dff7ccc40976 Mon Sep 17 00:00:00 2001
From: Aleksander Grygier <aleksander.grygier@gmail.com>
Date: Fri, 4 Sep 2026 17:04:03 +0200
Subject: [PATCH] ui : reuse the canonical quant bit-depth and extension
 parsing

Drop the duplicated UD- prefix and quant bit-depth regexes from the download
options utils: quantBitDepth re-implemented, more crudely, what
HuggingFaceService.getBitDepth already does, and the label helper re-declared
the weight-extension pattern held by MODEL_ID. The command preview now derives
its bit depth via the service, so the quant chips and the command sorts agree.

Assisted-by: llama-ui:Qwen3.8-Flash-Next
---
 ...tailsDownloadOptionsDownloadCommand.svelte |  6 +++--
 .../download-options.utils.ts                 | 25 ++-----------------
 2 files changed, 6 insertions(+), 25 deletions(-)

diff --git a/tools/ui/src/lib/components/app/models/discover/ModelsDiscoverDetails/ModelsDiscoverDetailsDownloadOptions/ModelsDiscoverDetailsDownloadOptionsDownloadCommand.svelte b/tools/ui/src/lib/components/app/models/discover/ModelsDiscoverDetails/ModelsDiscoverDetailsDownloadOptions/ModelsDiscoverDetailsDownloadOptionsDownloadCommand.svelte
index f1b7d59373..99f855157b 100644
--- a/tools/ui/src/lib/components/app/models/discover/ModelsDiscoverDetails/ModelsDiscoverDetailsDownloadOptions/ModelsDiscoverDetailsDownloadOptionsDownloadCommand.svelte
+++ b/tools/ui/src/lib/components/app/models/discover/ModelsDiscoverDetails/ModelsDiscoverDetailsDownloadOptions/ModelsDiscoverDetailsDownloadOptionsDownloadCommand.svelte
@@ -1,11 +1,11 @@
 <script lang="ts">
-	import { quantBitDepth } from './download-options.utils';
 	import { Check, Copy, Plus, X } from '@lucide/svelte';
 	import * as Select from '$lib/components/ui/select';
 	import {
 		DEFAULT_BASE_BIT_DEPTH,
 		MODEL_ID,
 		type ModelSidecar,
+		OTHER_BIT_DEPTH,
 		SERVE_COMMAND,
 		SPEC_TYPE
 	} from '$lib/constants';
@@ -30,7 +30,9 @@
 	let withDraft = $state(false);
 
 	function bitDepthOf(path: string): number {
-		return quantBitDepth(HuggingFaceService.extractQuantMeta(path)?.quant ?? null);
+		const quant = HuggingFaceService.extractQuantMeta(path)?.quant;
+
+		return quant ? (HuggingFaceService.getBitDepth(quant) ?? OTHER_BIT_DEPTH) : OTHER_BIT_DEPTH;
 	}
 
 	/**
diff --git a/tools/ui/src/lib/components/app/models/discover/ModelsDiscoverDetails/ModelsDiscoverDetailsDownloadOptions/download-options.utils.ts b/tools/ui/src/lib/components/app/models/discover/ModelsDiscoverDetails/ModelsDiscoverDetailsDownloadOptions/download-options.utils.ts
index bd7439b373..de7218a185 100644
--- a/tools/ui/src/lib/components/app/models/discover/ModelsDiscoverDetails/ModelsDiscoverDetailsDownloadOptions/download-options.utils.ts
+++ b/tools/ui/src/lib/components/app/models/discover/ModelsDiscoverDetails/ModelsDiscoverDetailsDownloadOptions/download-options.utils.ts
@@ -2,20 +2,12 @@ import {
 	DRAFT_FILE_LABEL,
 	isAuxSidecar,
 	isDraftSidecar,
-	OTHER_BIT_DEPTH,
+	MODEL_ID,
 	PATH_SEPARATOR
 } from '$lib/constants';
 import { SelectableFileKind } from '$lib/enums';
 import { HuggingFaceService } from '$lib/services';
 
-/** Leading `UD-` (Unsloth Dynamic) quant prefix and its length. */
-const UD_QUANT_PREFIX = 'UD-';
-const UD_QUANT_PREFIX_REGEX = /^UD-(?=.)/i;
-/** Captures the bit-depth digits of a quant token, e.g. `Q4_K_M` -> `4`. */
-const QUANT_BIT_DEPTH_REGEX = /(?:I?Q|F)(\d+)/i;
-/** Trailing weight extension, stripped from a quantless file's label. */
-const WEIGHT_EXTENSION_LABEL_REGEX = /\.gguf$/i;
-
 /** Kind of a file path: the main weights, a draft sidecar, or an aux sidecar (mmproj). */
 export function classify(path: string): SelectableFileKind {
 	const sidecar = HuggingFaceService.extractQuantMeta(path)?.sidecar;
@@ -37,18 +29,5 @@ export function labelFor(path: string): string {
 
 	const basename = path.split(PATH_SEPARATOR).pop() ?? path;
 
-	return basename.replace(WEIGHT_EXTENSION_LABEL_REGEX, '');
-}
-
-/**
- * Bit depth of a quant token; `OTHER_BIT_DEPTH` when it carries none. The `UD-`
- * unsloth prefix is stripped before matching.
- */
-export function quantBitDepth(quant: string | null): number {
-	if (!quant) return OTHER_BIT_DEPTH;
-
-	const stripped = UD_QUANT_PREFIX_REGEX.test(quant) ? quant.slice(UD_QUANT_PREFIX.length) : quant;
-	const bit = stripped.match(QUANT_BIT_DEPTH_REGEX)?.[1];
-
-	return bit ? Number(bit) : OTHER_BIT_DEPTH;
+	return basename.replace(MODEL_ID.WEIGHT_EXTENSION_REGEX, '');
 }