maint: update copyright

[gnulib.git] / lib / freadptr.c

diff --git a/lib/freadptr.c b/lib/freadptr.c
index 02b79e1..26c66ed 100644 (file)
--- a/lib/freadptr.c
+++ b/lib/freadptr.c
@@ -1,5 +1,5 @@
 /* Retrieve information about a FILE stream.
-   Copyright (C) 2007-2008 Free Software Foundation, Inc.
+   Copyright (C) 2007-2014 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
@@ -29,7 +29,7 @@ freadptr (FILE *fp, size_t *sizep)
   size_t size;
 
   /* Keep this code in sync with freadahead!  */
-#if defined _IO_ferror_unlocked || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Linux libc5 */
+#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
   if (fp->_IO_write_ptr > fp->_IO_write_base)
     return NULL;
   size = fp->_IO_read_end - fp->_IO_read_ptr;
@@ -37,14 +37,14 @@ freadptr (FILE *fp, size_t *sizep)
     return NULL;
   *sizep = size;
   return (const char *) fp->_IO_read_ptr;
-#elif defined __sferror             /* FreeBSD, NetBSD, OpenBSD, MacOS X, Cygwin */
-  if ((fp->_flags & __SWR) != 0 || fp->_r < 0)
+#elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin */
+  if ((fp_->_flags & __SWR) != 0 || fp_->_r < 0)
     return NULL;
-  size = fp->_r;
+  size = fp_->_r;
   if (size == 0)
     return NULL;
   *sizep = size;
-  return (const char *) fp->_p;
+  return (const char *) fp_->_p;
 #elif defined __EMX__               /* emx+gcc */
   if ((fp->_flags & _IOWRT) != 0)
     return NULL;
@@ -56,7 +56,15 @@ freadptr (FILE *fp, size_t *sizep)
     abort ();
   *sizep = fp->_rcount;
   return fp->_ptr;
-#elif defined _IOERR                /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw */
+#elif defined __minix               /* Minix */
+  if ((fp_->_flags & _IOWRITING) != 0)
+    return NULL;
+  size = fp_->_count;
+  if (size == 0)
+    return NULL;
+  *sizep = size;
+  return (const char *) fp_->_ptr;
+#elif defined _IOERR                /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, NonStop Kernel */
   if ((fp_->_flag & _IOWRT) != 0)
     return NULL;
   size = fp_->_cnt;
@@ -85,6 +93,25 @@ freadptr (FILE *fp, size_t *sizep)
     return NULL;
   *sizep = size;
   return (const char *) fp->_Next;
+#elif defined __MINT__              /* Atari FreeMiNT */
+  if (!fp->__mode.__read)
+    return NULL;
+  size = fp->__get_limit - fp->__bufp;
+  if (size == 0)
+    return NULL;
+  *sizep = size;
+  return fp->__bufp;
+#elif defined EPLAN9                /* Plan9 */
+  if (fp->state == 4 /* WR */)
+    return NULL;
+  if (fp->rp >= fp->wp)
+    return NULL;
+  *sizep = fp->wp - fp->rp;
+  return fp->rp;
+#elif defined SLOW_BUT_NO_HACKS     /* users can define this */
+  /* This implementation is correct on any ANSI C platform.  It is just
+     awfully slow.  */
+  return NULL;
 #else
  #error "Please port gnulib freadptr.c to your platform! Look at the definition of fflush, fread, getc, getc_unlocked on your system, then report this to bug-gnulib."
 #endif