HP Pascal/iX Reference Manual (31502-90022)

10- 7
Normally a file is closed upon exit from the block in which it is
declared. A file that has been disassociated will not be closed upon
exit, and must be explicitly closed with a direct call to the operating
system routines.
The disassociate procedure is useful when a file is passed to a Pascal
routine and must remain open when control returns to the routine that
passed the procedure to Pascal.
Example
disassociate (file_var)
eof
Usage
eof (f)
eof
Parameter
f A variable of type file that must be open. If f is omitted, the
system uses the standard file input .
Description
This Boolean function returns true if the end of a file is reached. If
the file f is open, the Boolean function eof( f) returns true when f is in
the output state, when f is in the direct access state, and its current
position is greater than the highest-indexed component ever written to f ,
or when no component remains for sequential input. Otherwise, eof( f)
returns false. If false, the next component is placed in the buffer
variable. If f is omitted, the system uses the standard file input .
When reading non-character values, such as integers or reals, from a
textfile, eof may remain false even if no other value of that type exists
in the file. This can occur if the remaining components are blanks; for
example, eoln is still false.
Example
eof
eof(file_var)
eoln
Usage
eoln (f)
eoln
Parameter
f A variable of type TEXT opened in the input state. If f is omitted,
the system uses the standard file input .
Description
This Boolean function returns true when the end of a line is reached in a
textfile. This happens when the current position of textfile f is at an
end-of-line marker. The function references the buffer variable f ^,
possibly causing an input operation to occur. For example, after readln,
a call to eoln places the first character of the new line in the buffer
variable. If f is omitted, the system uses the standard file input .
Example
eoln
eoln(text_file)
get
Usage
get (f)
get