Getting a string from a file or socket

I am missing a function like

   char *fgets(char *s, int size, FILE *stream);

in NSPR, which reads characters from a file or socket and stops when it
encounters an EOF or newline, storing the characters read in a 0-byte
terminated buffer. This is a very common task in server programming. I
do not want do (re-)implement it.

Any ideas? Shouldn't such a basic operation included in the library? As
far as I can see, NSPR only offers the very basic PR_Read().

Joachim