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source dump of claude code forked from oppi.li/claude-code
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2.2 kB · 70 lines
TypeScript
at main
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071import { getMainLoopModel } from './model/model.js'
// Document extensions that are handled speciallyexport const DOCUMENT_EXTENSIONS = new Set(['pdf'])
/** * Parse a page range string into firstPage/lastPage numbers. * Supported formats: * - "5" → { firstPage: 5, lastPage: 5 } * - "1-10" → { firstPage: 1, lastPage: 10 } * - "3-" → { firstPage: 3, lastPage: Infinity } * * Returns null on invalid input (non-numeric, zero, inverted range). * Pages are 1-indexed. */export function parsePDFPageRange( pages: string,): { firstPage: number; lastPage: number } | null { const trimmed = pages.trim() if (!trimmed) { return null }
// "N-" open-ended range if (trimmed.endsWith('-')) { const first = parseInt(trimmed.slice(0, -1), 10) if (isNaN(first) || first < 1) { return null } return { firstPage: first, lastPage: Infinity } }
const dashIndex = trimmed.indexOf('-') if (dashIndex === -1) { // Single page: "5" const page = parseInt(trimmed, 10) if (isNaN(page) || page < 1) { return null } return { firstPage: page, lastPage: page } }
// Range: "1-10" const first = parseInt(trimmed.slice(0, dashIndex), 10) const last = parseInt(trimmed.slice(dashIndex + 1), 10) if (isNaN(first) || isNaN(last) || first < 1 || last < 1 || last < first) { return null } return { firstPage: first, lastPage: last }}
/** * Check if PDF reading is supported with the current model. * PDF document blocks work on all providers (1P, Vertex, Bedrock, Foundry). * Haiku 3 is the only remaining model that predates PDF support; users on * it fall back to the page-extraction path (poppler-utils). Substring match * covers all provider ID formats (Bedrock prefixes, Vertex @-dates). */export function isPDFSupported(): boolean { return !getMainLoopModel().toLowerCase().includes('claude-3-haiku')}
/** * Check if a file extension is a PDF document. * @param ext File extension (with or without leading dot) */export function isPDFExtension(ext: string): boolean { const normalized = ext.startsWith('.') ? ext.slice(1) : ext return DOCUMENT_EXTENSIONS.has(normalized.toLowerCase())}