summaryrefslogtreecommitdiff
path: root/stdio/fwrite.c
diff options
context:
space:
mode:
Diffstat (limited to 'stdio/fwrite.c')
-rw-r--r--stdio/fwrite.c113
1 files changed, 62 insertions, 51 deletions
diff --git a/stdio/fwrite.c b/stdio/fwrite.c
index 4d012f1779..790c663aea 100644
--- a/stdio/fwrite.c
+++ b/stdio/fwrite.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1992, 1993, 1994, 1996 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -126,56 +126,67 @@ DEFUN(fwrite, (ptr, size, nmemb, stream),
}
}
else if (!default_func || buffer_space >= to_write)
- fill_buffer:
- /* There is enough room in the buffer for everything we
- want to write or the user has specified his own output
- buffer-flushing/expanding function. */
- while (to_write > 0)
- {
- register size_t n = to_write;
-
- if (n > buffer_space)
- n = buffer_space;
-
- buffer_space -= n;
-
- written += n;
- to_write -= n;
-
- if (n < 20)
- while (n-- > 0)
- *stream->__bufp++ = *p++;
- else
- {
- memcpy ((PTR) stream->__bufp, (PTR) p, n);
- stream->__bufp += n;
- p += n;
- }
-
- if (buffer_space == 0 || (to_write == 0 && newlinep))
- {
- /* We've filled the buffer, so flush it. */
- if (fflush (stream) == EOF)
- break;
-
- /* Reset our record of the space available in the buffer,
- since we have just flushed it. */
- check_space:
- buffer_space = (stream->__bufsize -
- (stream->__bufp - stream->__buffer));
- if (buffer_space == 0)
- {
- /* With a custom output-room function, flushing might
- not create any buffer space. Try writing a single
- character to create the space. */
- if (__flshfp (stream, *p++) == EOF)
- goto done;
- ++written;
- --to_write;
- goto check_space;
- }
- }
- }
+ {
+ /* There is enough room in the buffer for everything we want to write
+ or the user has specified his own output buffer-flushing/expanding
+ function. */
+ fill_buffer:
+ while (to_write > 0)
+ {
+ register size_t n = to_write;
+
+ if (n > buffer_space)
+ n = buffer_space;
+
+ buffer_space -= n;
+
+ written += n;
+ to_write -= n;
+
+ if (n < 20)
+ while (n-- > 0)
+ *stream->__bufp++ = *p++;
+ else
+ {
+ memcpy ((PTR) stream->__bufp, (PTR) p, n);
+ stream->__bufp += n;
+ p += n;
+ }
+
+ if (to_write == 0)
+ /* Done writing. */
+ break;
+ else if (buffer_space == 0)
+ {
+ /* We have filled the buffer, so flush it. */
+ if (fflush (stream) == EOF)
+ break;
+
+ /* Reset our record of the space available in the buffer,
+ since we have just flushed it. */
+ check_space:
+ buffer_space = (stream->__bufsize -
+ (stream->__bufp - stream->__buffer));
+ if (buffer_space == 0)
+ {
+ /* With a custom output-room function, flushing might
+ not create any buffer space. Try writing a single
+ character to create the space. */
+ if (__flshfp (stream, *p++) == EOF)
+ goto done;
+ ++written;
+ --to_write;
+ goto check_space;
+ }
+ }
+ }
+
+ /* We have written all the data into the buffer. If we are
+ line-buffered and just put a newline in the buffer, flush now to
+ make sure it gets out. */
+ if (newlinep)
+ fflush (stream);
+ }
else
{
/* It won't all fit in the buffer. */