oppi.li
source dump of claude code
1import { getMainLoopModel } from './model/model.js'
2
3// Document extensions that are handled specially
4export const DOCUMENT_EXTENSIONS = new Set(['pdf'])
5
6/**
7 * Parse a page range string into firstPage/lastPage numbers.
8 * Supported formats:
9 * - "5" → { firstPage: 5, lastPage: 5 }
10 * - "1-10" → { firstPage: 1, lastPage: 10 }
11 * - "3-" → { firstPage: 3, lastPage: Infinity }
12 *
13 * Returns null on invalid input (non-numeric, zero, inverted range).
14 * Pages are 1-indexed.
15 */
16export function parsePDFPageRange(
17 pages: string,
18): { firstPage: number; lastPage: number } | null {
19 const trimmed = pages.trim()
20 if (!trimmed) {
21 return null
22 }
23
24 // "N-" open-ended range
25 if (trimmed.endsWith('-')) {
26 const first = parseInt(trimmed.slice(0, -1), 10)
27 if (isNaN(first) || first < 1) {
28 return null
29 }
30 return { firstPage: first, lastPage: Infinity }
31 }
32
33 const dashIndex = trimmed.indexOf('-')
34 if (dashIndex === -1) {
35 // Single page: "5"
36 const page = parseInt(trimmed, 10)
37 if (isNaN(page) || page < 1) {
38 return null
39 }
40 return { firstPage: page, lastPage: page }
41 }
42
43 // Range: "1-10"
44 const first = parseInt(trimmed.slice(0, dashIndex), 10)
45 const last = parseInt(trimmed.slice(dashIndex + 1), 10)
46 if (isNaN(first) || isNaN(last) || first < 1 || last < 1 || last < first) {
47 return null
48 }
49 return { firstPage: first, lastPage: last }
50}
51
52/**
53 * Check if PDF reading is supported with the current model.
54 * PDF document blocks work on all providers (1P, Vertex, Bedrock, Foundry).
55 * Haiku 3 is the only remaining model that predates PDF support; users on
56 * it fall back to the page-extraction path (poppler-utils). Substring match
57 * covers all provider ID formats (Bedrock prefixes, Vertex @-dates).
58 */
59export function isPDFSupported(): boolean {
60 return !getMainLoopModel().toLowerCase().includes('claude-3-haiku')
61}
62
63/**
64 * Check if a file extension is a PDF document.
65 * @param ext File extension (with or without leading dot)
66 */
67export function isPDFExtension(ext: string): boolean {
68 const normalized = ext.startsWith('.') ? ext.slice(1) : ext
69 return DOCUMENT_EXTENSIONS.has(normalized.toLowerCase())
70}