/* PSPP - a program for statistical analysis.
- Copyright (C) 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
+ Copyright (C) 2010, 2011, 2012, 2013, 2014 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
is->head = is->buffer;
/* Read more input. */
+ n = 0;
do
{
- n = read (is->fd, is->buffer + is->length,
- U8_ISTREAM_BUFFER_SIZE - is->length);
+ ssize_t retval = read (is->fd, is->buffer + is->length,
+ U8_ISTREAM_BUFFER_SIZE - is->length);
+ if (retval > 0)
+ {
+ n += retval;
+ is->length += retval;
+ }
+ else if (retval == 0)
+ return n;
+ else if (errno != EINTR)
+ return n > 0 ? n : -1;
}
- while (n < 0 && errno == EINTR);
- if (n > 0)
- is->length += n;
+ while (is->length < U8_ISTREAM_BUFFER_SIZE);
return n;
}