Swadhin Biswas feat: implement mervelas cli engine, built-in tools, and reactive UI · 4/3/2026
0358986
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import { mkdir, unlink, writeFile } from 'fs/promises'
import { tmpdir } from 'os'
import { join } from 'path'
import { type AnsiToPngOptions, ansiToPng } from './ansiToPng.js'
import { execFileNoThrowWithCwd } from './execFileNoThrow.js'
import { logError } from './log.js'
import { getPlatform } from './platform.js'
/**
* Copies an image (from ANSI text) to the system clipboard.
* Supports macOS, Linux (with xclip/xsel), and Windows.
*
* Pure-TS pipeline: ANSI text → bitmap-font render → PNG encode. No WASM,
* no system fonts, so this works in every build (native and JS).
*/
export async function copyAnsiToClipboard(
ansiText: string,
options?: AnsiToPngOptions,
): Promise<{ success: boolean; message: string }> {
try {
const tempDir = join(tmpdir(), 'claude-code-screenshots')
await mkdir(tempDir, { recursive: true })
const pngPath = join(tempDir, `screenshot-${Date.now()}.png`)
const pngBuffer = ansiToPng(ansiText, options)
await writeFile(pngPath, pngBuffer)
const result = await copyPngToClipboard(pngPath)
try {
await unlink(pngPath)
} catch {
// Ignore cleanup errors
}
return result
} catch (error) {
logError(error)
return {
success: false,
message: `Failed to copy screenshot: ${error instanceof Error ? error.message : 'Unknown error'}`,
}
}
}
async function copyPngToClipboard(
pngPath: string,
): Promise<{ success: boolean; message: string }> {
const platform = getPlatform()
if (platform === 'macos') {
// macOS: Use osascript to copy PNG to clipboard
// Escape backslashes and double quotes for AppleScript string
const escapedPath = pngPath.replace(/\\/g, '\\\\').replace(/"/g, '\\"')
const script = `set the clipboard to (read (POSIX file "${escapedPath}") as «class PNGf»)`
const result = await execFileNoThrowWithCwd('osascript', ['-e', script], {
timeout: 5000,
})
if (result.code === 0) {
return { success: true, message: 'Screenshot copied to clipboard' }
}
return {
success: false,
message: `Failed to copy to clipboard: ${result.stderr}`,
}
}
if (platform === 'linux') {
// Linux: Try xclip first, then xsel
const xclipResult = await execFileNoThrowWithCwd(
'xclip',
['-selection', 'clipboard', '-t', 'image/png', '-i', pngPath],
{ timeout: 5000 },
)
if (xclipResult.code === 0) {
return { success: true, message: 'Screenshot copied to clipboard' }
}
// Try xsel as fallback
const xselResult = await execFileNoThrowWithCwd(
'xsel',
['--clipboard', '--input', '--type', 'image/png'],
{ timeout: 5000 },
)
if (xselResult.code === 0) {
return { success: true, message: 'Screenshot copied to clipboard' }
}
return {
success: false,
message:
'Failed to copy to clipboard. Please install xclip or xsel: sudo apt install xclip',
}
}
if (platform === 'windows') {
// Windows: Use PowerShell to copy image to clipboard
const psScript = `Add-Type -AssemblyName System.Windows.Forms; [System.Windows.Forms.Clipboard]::SetImage([System.Drawing.Image]::FromFile('${pngPath.replace(/'/g, "''")}'))`
const result = await execFileNoThrowWithCwd(
'powershell',
['-NoProfile', '-Command', psScript],
{ timeout: 5000 },
)
if (result.code === 0) {
return { success: true, message: 'Screenshot copied to clipboard' }
}
return {
success: false,
message: `Failed to copy to clipboard: ${result.stderr}`,
}
}
return {
success: false,
message: `Screenshot to clipboard is not supported on ${platform}`,
}
}