libreoffice-file-converter/dist/index.mjs.map

Simple NodeJS wrapper for libreoffice CLI for converting office documents to different formats

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const PROGRAM_FILES = 'PROGRAMFILES';\n\nexport const PROGRAM_FILES_86 = 'PROGRAMFILES(X86)';\n","import { join } from 'node:path';\nimport process from 'node:process';\n\nimport { PROGRAM_FILES, PROGRAM_FILES_86 } from './env';\n\nexport const DARWIN_PATHS = (): readonly string[] => ['/Applications/LibreOffice.app/Contents/MacOS/soffice'];\n\nexport const LINUX_PATHS = (): readonly string[] => [\n  '/usr/bin/libreoffice',\n  '/usr/bin/soffice',\n  '/snap/bin/libreoffice',\n  '/opt/libreoffice/program/soffice',\n  '/opt/libreoffice7.6/program/soffice',\n];\n\nexport const WIN32_PATHS = (): readonly string[] => [\n  join(process.env[PROGRAM_FILES_86] || '', 'LIBREO~1/program/soffice.exe'),\n  join(process.env[PROGRAM_FILES_86] || '', 'LibreOffice/program/soffice.exe'),\n  join(process.env[PROGRAM_FILES] || '', 'LibreOffice/program/soffice.exe'),\n];\n","import { access } from 'node:fs/promises';\nimport process from 'node:process';\nimport { pathToFileURL } from 'node:url';\n\nimport { DARWIN_PATHS, LINUX_PATHS, WIN32_PATHS } from '../constants';\n\nexport const getLibreOfficeExecutablePaths = (): readonly string[] => {\n  if (process.platform === 'darwin') {\n    return DARWIN_PATHS();\n  }\n\n  if (process.platform === 'linux') {\n    return LINUX_PATHS();\n  }\n\n  if (process.platform === 'win32') {\n    return WIN32_PATHS();\n  }\n\n  return [];\n};\n\nexport const getLibreOfficeExecutablePath = async (binaryPaths: readonly string[] = []): Promise<string> => {\n  const paths = [...binaryPaths, ...getLibreOfficeExecutablePaths()];\n\n  const existingPaths = await Promise.all(\n    paths.map(async (path) => {\n      try {\n        await access(path);\n      } catch {\n        return false;\n      }\n\n      return path;\n    }),\n  );\n\n  const [path] = existingPaths.filter(Boolean);\n\n  if (!path) {\n    throw new Error('Could not find soffice binary');\n  }\n\n  return path;\n};\n\nexport const getLibreOfficeCommandArgs = (\n  installationDir: string,\n  inputPath: string,\n  outputDir: string,\n  format: string,\n  inputFilter?: string,\n  outputFilter?: string,\n): readonly string[] => {\n  const filterSegment = outputFilter && outputFilter.length > 0 ? `:${outputFilter}` : '';\n\n  const args = [`-env:UserInstallation=${pathToFileURL(installationDir).toString()}`, '--headless'];\n\n  if (inputFilter && inputFilter.length > 0) {\n    args.push(`--infilter=${inputFilter}`);\n  }\n\n  args.push('--convert-to', `${format}${filterSegment}`, '--outdir', outputDir, inputPath);\n\n  return args;\n};\n\nexport const hasLibreOfficeError = (stderr: string): boolean => {\n  return stderr?.toLowerCase()?.includes('error:');\n};\n","import { Buffer } from 'node:buffer';\nimport { execFile } from 'node:child_process';\nimport type { ExecFileOptions } from 'node:child_process';\nimport process from 'node:process';\nimport { inspect } from 'node:util';\n\nimport { hasLibreOfficeError } from './libreoffice';\n\nconst isBuffer = (value: unknown): value is Buffer => {\n  return Buffer.isBuffer(value);\n};\n\nconst processOutputToString = (processOutput: string | Buffer): string => {\n  return isBuffer(processOutput) ? processOutput.toString('utf-8') : processOutput;\n};\n\nexport const execFileAsync = (\n  path: string,\n  args: readonly string[],\n  options?: ExecFileOptions,\n  debug?: boolean,\n): Promise<void> => {\n  return new Promise((resolve, reject) => {\n    execFile(path, args, options, (error, stdout, stderr) => {\n      const stderrString = processOutputToString(stderr);\n      const stdoutString = processOutputToString(stdout);\n\n      if (debug) {\n        const debugInfo = inspect(\n          {\n            args,\n            path,\n            stderr: stderrString,\n            stdout: stdoutString,\n          },\n          {\n            colors: true,\n            sorted: true,\n          },\n        );\n\n        process.stdout.write(`LibreOffice debug output:\\n${debugInfo}\\n`);\n      }\n\n      const libreOfficeError = hasLibreOfficeError(stderrString);\n\n      if (error || libreOfficeError) {\n        return reject(error || new Error(stderrString));\n      }\n\n      return resolve();\n    });\n  });\n};\n","import { createWriteStream } from 'node:fs';\nimport { join, sep } from 'node:path';\nimport { pipeline } from 'node:stream';\nimport type { Readable } from 'node:stream';\n\nexport const getTemporaryFilePath = (temporaryDir: string): string => {\n  return join(temporaryDir, 'source');\n};\n\nexport const getProcessedFilePath = (temporaryDirPath: string, inputPath: string, format: string): string => {\n  const insideTemporaryDir = inputPath.startsWith(temporaryDirPath);\n\n  if (insideTemporaryDir) {\n    return `${inputPath}.${format}`;\n  }\n\n  const inputPathSegments = inputPath.split(sep);\n  const inputFileNameSegment =\n    inputPathSegments.length > 0 ? inputPathSegments[inputPathSegments.length - 1] : inputPathSegments[0];\n  const inputFileNameSegments = inputFileNameSegment?.split('.');\n\n  const inputFileName =\n    inputFileNameSegments?.length && inputFileNameSegments.length > 1\n      ? inputFileNameSegments?.slice(0, -1).join('.')\n      : inputFileNameSegments?.[0];\n\n  return `${temporaryDirPath}${sep}${inputFileName}.${format}`;\n};\n\nexport const writeStream = (path: string, readStream: Readable): Promise<void> => {\n  return new Promise((resolve, reject) => {\n    const writeStream = createWriteStream(path);\n\n    pipeline(readStream, writeStream, (error) => {\n      if (error) {\n        return reject(error);\n      }\n\n      return resolve();\n    });\n  });\n};\n","export const isObject = (item: unknown): item is Record<string, unknown> => {\n  return Boolean(item && typeof item === 'object' && !Array.isArray(item));\n};\n\nexport const deepMerge = <T extends Record<string, unknown>>(...objects: readonly T[]): T => {\n  return objects.reduce<T>((target, source) => {\n    Object.keys(source).forEach((key: keyof T) => {\n      const targetValue = target[key];\n      const sourceValue = source[key];\n\n      if (Array.isArray(targetValue) && Array.isArray(sourceValue)) {\n        target[key] = [...targetValue, ...sourceValue] as T[keyof T];\n\n        return;\n      }\n\n      if (isObject(targetValue) && isObject(sourceValue)) {\n        target[key] = deepMerge(targetValue, sourceValue);\n\n        return;\n      }\n\n      target[key] = sourceValue;\n    });\n\n    return target;\n  }, {} as T);\n};\n","import type { Buffer } from 'node:buffer';\nimport { createReadStream } from 'node:fs';\nimport { readFile, writeFile } from 'node:fs/promises';\nimport type { Readable } from 'node:stream';\nimport { dir, setGracefulCleanup } from 'tmp-promise';\n\nimport {\n  deepMerge,\n  execFileAsync,\n  getLibreOfficeCommandArgs,\n  getLibreOfficeExecutablePath,\n  getProcessedFilePath,\n  getTemporaryFilePath,\n  writeStream,\n} from './helpers';\nimport type {\n  ConvertOptions,\n  ConvertOptionsInput,\n  ConvertOutputOptionsBuffer,\n  ConvertOutputOptionsFile,\n  ConvertOutputOptionsStream,\n  LibreOfficeFileConverterOptions,\n} from './types';\n\n/**\n * Simple NodeJS wrapper for libreoffice CLI for converting office documents to different formats.\n *\n * @example\n * ```ts\n * const libreOfficeFileConverter = new LibreOfficeFileConverter({ childProcessOptions: { timeout: 60 * 1000 } });\n * ```\n *\n * @class\n * @public\n */\nexport class LibreOfficeFileConverter {\n  private readonly _options: LibreOfficeFileConverterOptions;\n\n  /**\n   * Create an instance of the LibreOfficeFileConverter.\n   *\n   * @example\n   * ```ts\n   * const libreOfficeFileConverter = new LibreOfficeFileConverter({ childProcessOptions: { timeout: 60 * 1000 } });\n   * ```\n   *\n   * @param options The LibreOfficeFileConverter options.\n   *\n   * @constructor\n   * @public\n   */\n  constructor(options: LibreOfficeFileConverterOptions = {}) {\n    this._options = options;\n\n    setGracefulCleanup();\n  }\n\n  /**\n   * Converts provided input to the requested format.\n   *\n   * @example\n   * ```ts\n   * const outputBuffer = await libreOfficeFileConverter.convert({\n   *  buffer: inputBuffer,\n   *  format: 'pdf',\n   *  input: 'buffer',\n   *  output: 'buffer',\n   * });\n   * ```\n   *\n   * @param options Convert options: input and output type, format, filter, converter options.\n   *\n   * @returns Buffer of the converted input.\n   *\n   * @overload\n   * @public\n   */\n  public async convert(options: ConvertOptionsInput & ConvertOutputOptionsBuffer): Promise<Buffer>;\n\n  /**\n   * Converts provided input to the requested format.\n   *\n   * @example\n   * ```ts\n   * await libreOfficeFileConverter.convert({\n   *  format: 'pdf',\n   *  input: 'file',\n   *  inputPath,\n   *  output: 'file',\n   *  outputPath,\n   * });\n   * ```\n   *\n   * @param options Convert options: input and output type, format, filter, converter options.\n   *\n   * @overload\n   * @public\n   */\n  public async convert(options: ConvertOptionsInput & ConvertOutputOptionsFile): Promise<void>;\n\n  /**\n   * Converts provided input to the requested format.\n   *\n   * @example\n   * ```ts\n   * const outputStream = await libreOfficeFileConverter.convert({\n   *  format: 'pdf',\n   *  input: 'stream',\n   *  stream: inputStream,\n   *  output: 'stream',\n   * });\n   * ```\n   *\n   * @param options Convert options: input and output type, format, filter, converter options.\n   *\n   * @returns Readable stream of the converted input.\n   *\n   * @overload\n   * @public\n   */\n  public async convert(options: ConvertOptionsInput & ConvertOutputOptionsStream): Promise<Readable>;\n\n  /**\n   * Converts provided input to the requested format.\n   *\n   * @example\n   * ```ts\n   * const outputBuffer = await libreOfficeFileConverter.convert({\n   *  buffer: inputBuffer,\n   *  format: 'pdf',\n   *  input: 'buffer',\n   *  output: 'buffer',\n   * });\n   * ```\n   *\n   * @param options Convert options: input and output type, format, filter, converter options.\n   *\n   * @returns Buffer, readable stream or void depending on the convert options.\n   *\n   * @public\n   */\n  public async convert(options: ConvertOptions): Promise<Buffer | Readable | void> {\n    const { filter, format, inputFilter, options: callOptions = {}, outputFilter } = options;\n\n    const mergedOptions = this.mergeOptions(callOptions);\n    const { tmpOptions } = mergedOptions;\n\n    const temporaryDir = await dir({\n      prefix: 'libreoffice-file-converter',\n      unsafeCleanup: true,\n      ...tmpOptions,\n    });\n\n    const inputPath = await this.write(options, temporaryDir.path);\n\n    await this.process(inputPath, temporaryDir.path, format, inputFilter || filter, outputFilter, mergedOptions);\n\n    return this.read(options, temporaryDir.path, inputPath);\n  }\n\n  private mergeOptions(options: LibreOfficeFileConverterOptions = {}): LibreOfficeFileConverterOptions {\n    return deepMerge(this._options, options);\n  }\n\n  private async process(\n    inputPath: string,\n    outputDir: string,\n    format: string,\n    inputFilter?: string,\n    outputFilter?: string,\n    options: LibreOfficeFileConverterOptions = {},\n  ): Promise<void> {\n    const { binaryPaths, childProcessOptions, debug, tmpOptions } = options;\n\n    const libreOfficeExecutablePath = await getLibreOfficeExecutablePath(binaryPaths);\n\n    const installationDir = await dir({\n      prefix: 'soffice',\n      unsafeCleanup: true,\n      ...tmpOptions,\n    });\n\n    const libreOfficeCommandArgs = getLibreOfficeCommandArgs(\n      installationDir.path,\n      inputPath,\n      outputDir,\n      format,\n      inputFilter,\n      outputFilter,\n    );\n\n    await execFileAsync(libreOfficeExecutablePath, libreOfficeCommandArgs, childProcessOptions, debug);\n  }\n\n  private async read(\n    options: ConvertOptions,\n    temporaryDirPath: string,\n    inputPath: string,\n  ): Promise<Buffer | Readable | void> {\n    const { format, output } = options;\n\n    const processedFilePath = getProcessedFilePath(temporaryDirPath, inputPath, format);\n\n    if (output === 'buffer') {\n      return readFile(processedFilePath);\n    }\n\n    if (output === 'file') {\n      const { outputPath } = options;\n\n      const stream = createReadStream(processedFilePath);\n\n      return writeStream(outputPath, stream);\n    }\n\n    if (output === 'stream') {\n      return createReadStream(processedFilePath);\n    }\n  }\n\n  private async write(options: ConvertOptions, temporaryDirPath: string): Promise<string> {\n    const { input } = options;\n\n    const temporaryFilePath = getTemporaryFilePath(temporaryDirPath);\n\n    if (input === 'buffer') {\n      const { buffer } = options;\n\n      await writeFile(temporaryFilePath, buffer);\n\n      return temporaryFilePath;\n    }\n\n    if (input === 'file') {\n      const { inputPath } = options;\n\n      return inputPath;\n    }\n\n    if (input === 'stream') {\n      const { stream } = options;\n\n      await writeStream(temporaryFilePath, stream);\n\n      return temporaryFilePath;\n    }\n\n    return temporaryFilePath;\n  }\n}\n"]}