Basic Characteristics RAPID

Example
Limitations
Error handling
Predefined data
Syntax
text := ReadStr(infile);
IF text = EOF THEN
TPWrite "The file is empty";
.
Before using the string read from the file, a check is performed to make sure that
the file is not empty.
The function can only be used for files that have been opened for reading.
If an error occurs during reading, the system variable ERRNO is set to
ERR_FILEACC. This error can then be handled in the error handler.
The constant EOF can be used to check if the file was empty when trying to read from
the file or to stop reading at the end of the file.
CONST string EOF := "EOF";
ReadStr ’(’
[IODevice ’:=’]
[’\’Time’:=’ ]’)’
A function with a return value of the type string.
Related information
Described in:
Opening (etc.) serial channels RAPID Summary - Communication
9-ReadStr-2 RAPID Reference Manual