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Current Path : /home/vmanager/www/vm_observer/node_modules/dotenv/lib/
Linux 9dbcd5f6333d 5.15.0-124-generic #134-Ubuntu SMP Fri Sep 27 20:20:17 UTC 2024 x86_64
Current File : /home/vmanager/www/vm_observer/node_modules/dotenv/lib/main.js
/* @flow */
/*::

type DotenvParseOptions = {
  debug?: boolean
}

// keys and values from src
type DotenvParseOutput = { [string]: string }

type DotenvConfigOptions = {
  path?: string, // path to .env file
  encoding?: string, // encoding of .env file
  debug?: string // turn on logging for debugging purposes
}

type DotenvConfigOutput = {
  parsed?: DotenvParseOutput,
  error?: Error
}

*/

const fs = require('fs')
const path = require('path')
const os = require('os')

function log (message /*: string */) {
  console.log(`[dotenv][DEBUG] ${message}`)
}

const NEWLINE = '\n'
const RE_INI_KEY_VAL = /^\s*([\w.-]+)\s*=\s*(.*)?\s*$/
const RE_NEWLINES = /\\n/g
const NEWLINES_MATCH = /\r\n|\n|\r/

// Parses src into an Object
function parse (src /*: string | Buffer */, options /*: ?DotenvParseOptions */) /*: DotenvParseOutput */ {
  const debug = Boolean(options && options.debug)
  const obj = {}

  // convert Buffers before splitting into lines and processing
  src.toString().split(NEWLINES_MATCH).forEach(function (line, idx) {
    // matching "KEY' and 'VAL' in 'KEY=VAL'
    const keyValueArr = line.match(RE_INI_KEY_VAL)
    // matched?
    if (keyValueArr != null) {
      const key = keyValueArr[1]
      // default undefined or missing values to empty string
      let val = (keyValueArr[2] || '')
      const end = val.length - 1
      const isDoubleQuoted = val[0] === '"' && val[end] === '"'
      const isSingleQuoted = val[0] === "'" && val[end] === "'"

      // if single or double quoted, remove quotes
      if (isSingleQuoted || isDoubleQuoted) {
        val = val.substring(1, end)

        // if double quoted, expand newlines
        if (isDoubleQuoted) {
          val = val.replace(RE_NEWLINES, NEWLINE)
        }
      } else {
        // remove surrounding whitespace
        val = val.trim()
      }

      obj[key] = val
    } else if (debug) {
      log(`did not match key and value when parsing line ${idx + 1}: ${line}`)
    }
  })

  return obj
}

function resolveHome (envPath) {
  return envPath[0] === '~' ? path.join(os.homedir(), envPath.slice(1)) : envPath
}

// Populates process.env from .env file
function config (options /*: ?DotenvConfigOptions */) /*: DotenvConfigOutput */ {
  let dotenvPath = path.resolve(process.cwd(), '.env')
  let encoding /*: string */ = 'utf8'
  let debug = false

  if (options) {
    if (options.path != null) {
      dotenvPath = resolveHome(options.path)
    }
    if (options.encoding != null) {
      encoding = options.encoding
    }
    if (options.debug != null) {
      debug = true
    }
  }

  try {
    // specifying an encoding returns a string instead of a buffer
    const parsed = parse(fs.readFileSync(dotenvPath, { encoding }), { debug })

    Object.keys(parsed).forEach(function (key) {
      if (!Object.prototype.hasOwnProperty.call(process.env, key)) {
        process.env[key] = parsed[key]
      } else if (debug) {
        log(`"${key}" is already defined in \`process.env\` and will not be overwritten`)
      }
    })

    return { parsed }
  } catch (e) {
    return { error: e }
  }
}

module.exports.config = config
module.exports.parse = parse
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