- Manual Scilab
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Please note that the recommended version of Scilab is 2025.0.0. This page might be outdated.
See the recommended documentation of this function
mgetstr
read a character string from a file
Calling Sequence
str = mgetstr(n, [fd])
Arguments
- n
Non negative integer: how many characters should be read.
- fd
Integer file descriptor as returned by
mopen: where characters should be read. The value-1stands for the last opened file and is the default.- str
The character string read.
Description
The mgetstr function attempts to read up
to n characters from a file. If end of file is
reached before n characters are read,
mgetstr returns the properly read values
only. As a consequence, when the read cursor is already at the end
of the file when mgetstr is called, it returns
an empty string no matter what value is provided for
n.
Examples
fn = SCI + '/ACKNOWLEDGEMENTS'; // absolute path to some file details = fileinfo(fn); // retrieve file details len = details(1); // get file length fd = mopen(fn, 'rt'); // open file as text with read mode str1 = mgetstr(33, fd) // read 33 characters from fd length(str1) // 33 characters read str2 = mgetstr(272, fd) // read the next 272 characters from fd length(str2) // 272 characters read mseek(len - 5); // jump to the 5th character before end of file str3 = mgetstr(10, fd) // try to read 10 characters: returns 5 characters only, no more available length(str3) // yes, there are 5 characters: you just can't see the linefeed :) str4 = mgetstr(10, fd) // read 10 characters: returns empty string length(str4) // empty string mclose(fd); // close file descriptor
See Also
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