File Statements
File Commands
| open | open a file | ||
| close | close a file | ||
| put | write alphanumeric text to a file | ||
| get | read alphanumeric text from a file | ||
| write | binary write to a file | ||
| read | binary read from a file | ||
| seek | move to a specified position in a file | ||
| tell | report the current file position | ||
| eof | check for end of file |
File Command Syntax
open : streamNo, fileName, ioCapability {, ioCapability }| ioCapability is one of get, put, read, write, seek, mod | ||
| put or write capability will cause any existing file to be truncated to zero length unless the mod capability is also specified. | ||
| seek capability is needed to use seek or tell commands. | ||
close : streamNo
get : streamNo , getItem { , getItem }
put : streamNo , putItem { , putItem }
read : streamNo [ : fileStatus ] , readItem { , readItem }
write : streamNo[ : fileStatus ] , writeItem {, writeItem }
seek : streamNo , filePosition or seek : streamNo , *
tell : streamNo , filePositionVar
eof ( streamNo ) : boolean (This is a function)
Appending to a Text File
% Open the file for put, but do not erase itopen : streamNo, fileName, put { , get }, mod
% Move the file pointer to the end of the file
seek : streamNo, *