72 lines
2.2 KiB
TypeScript
72 lines
2.2 KiB
TypeScript
// Show the contents of a file, if possible.
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import { escapeHTML } from "bun"
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import { readdirSync } from "fs"
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import { join, extname } from "path"
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import type { CommandOutput } from "@/shared/types"
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import { isBinaryFile } from "@/utils"
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import { projectName, projectDir } from "@/project"
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import { sessionGet } from "@/session"
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import { highlight } from "../lib/highlight"
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export default async function (path: string) {
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const project = projectName()
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const root = sessionGet("cwd") || projectDir()
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let files: string[] = []
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for (const file of readdirSync(root, { withFileTypes: true })) {
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files.push(file.name)
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}
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if (!files.includes(path))
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return { error: `file not found: ${path}` }
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return await readFile(join(root, path))
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}
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async function readFile(path: string): Promise<CommandOutput> {
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const ext = extname(path).slice(1)
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const file = Bun.file(path)
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switch (ext) {
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case "jpeg": case "jpg": case "png": case "gif": case "webp":
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const img = await file.arrayBuffer()
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return { html: `<img src="data:image/${ext};base64,${Buffer.from(img).toString('base64')}" style="max-height:270px;max-width:480px;" />` }
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case "mp3": case "wav":
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case "mp4": case "mov": case "avi": case "mkv": case "webm":
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return "Not implemented"
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case "js": case "ts": case "tsx": case "json":
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return {
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html: `<div style='white-space: pre;'>${highlight(convertIndent(await file.text()))}</div>`
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}
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default:
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if (await isBinaryFile(path))
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throw "Cannot display binary file"
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return {
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html: `<div style="white-space: pre;">${escapeHTML(await file.text())}</div>`
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}
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}
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}
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// cut down 4space and 2space indents into 1space, for readability on a small screen
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function convertIndent(str: string) {
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const lines = str.split("\n")
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// find the smallest non-zero indent
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const minIndent = Math.min(
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...lines
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.map(l => (l.match(/^ +/) || [""])[0].length)
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.filter(len => len > 0)
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)
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return lines
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.map(line =>
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line.replace(/^( +)/, (_, spaces) => " ".repeat(spaces.length / minIndent))
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)
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.join("\n")
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}
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