Function stringToFlags

lib/internal/fs/utils.js:726–767

(flags, name = 'flags')

}

function stringToFlags(flags, name = 'flags') {
  if (typeof flags === 'number') {
    validateInt32(flags, name);
    // Coerce -0 to +0.
    return flags + 0;
  }

  if (flags == null) {
    return O_RDONLY;
  }

  switch (flags) {
    case 'r' : return O_RDONLY;
    case 'rs' : // Fall through.
    case 'sr' : return O_RDONLY | O_SYNC;
    case 'r+' : return O_RDWR;
    case 'rs+' : // Fall through.
    case 'sr+' : return O_RDWR | O_SYNC;

    case 'w' : return O_TRUNC | O_CREAT | O_WRONLY;
    case 'wx' : // Fall through.
    case 'xw' : return O_TRUNC | O_CREAT | O_WRONLY | O_EXCL;

    case 'w+' : return O_TRUNC | O_CREAT | O_RDWR;
    case 'wx+': // Fall through.
    case 'xw+': return O_TRUNC | O_CREAT | O_RDWR | O_EXCL;

    case 'a' : return O_APPEND | O_CREAT | O_WRONLY;
    case 'ax' : // Fall through.
    case 'xa' : return O_APPEND | O_CREAT | O_WRONLY | O_EXCL;
    case 'as' : // Fall through.
    case 'sa' : return O_APPEND | O_CREAT | O_WRONLY | O_SYNC;

    case 'a+' : return O_APPEND | O_CREAT | O_RDWR;
    case 'ax+': // Fall through.
    case 'xa+': return O_APPEND | O_CREAT | O_RDWR | O_EXCL;
    case 'as+': // Fall through.
    case 'sa+': return O_APPEND | O_CREAT | O_RDWR | O_SYNC;
  }

  throw new ERR_INVALID_ARG_VALUE('flags', flags);
}

const stringToSymlinkType = hideStackFrames((type) => {
  switch (type) {