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Diffstat (limited to 'newlib/libc/stdio/fread.c')
-rw-r--r-- | newlib/libc/stdio/fread.c | 155 |
1 files changed, 0 insertions, 155 deletions
diff --git a/newlib/libc/stdio/fread.c b/newlib/libc/stdio/fread.c deleted file mode 100644 index c4c66b4..0000000 --- a/newlib/libc/stdio/fread.c +++ /dev/null @@ -1,155 +0,0 @@ -/* - * Copyright (c) 1990 The Regents of the University of California. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by the University of California, Berkeley. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -/* -FUNCTION -<<fread>>---read array elements from a file - -INDEX - fread - -ANSI_SYNOPSIS - #include <stdio.h> - size_t fread(void *<[buf]>, size_t <[size]>, size_t <[count]>, - FILE *<[fp]>); - -TRAD_SYNOPSIS - #include <stdio.h> - size_t fread(<[buf]>, <[size]>, <[count]>, <[fp]>) - char *<[buf]>; - size_t <[size]>; - size_t <[count]>; - FILE *<[fp]>; - -DESCRIPTION -<<fread>> attempts to copy, from the file or stream identified by -<[fp]>, <[count]> elements (each of size <[size]>) into memory, -starting at <[buf]>. <<fread>> may copy fewer elements than -<[count]> if an error, or end of file, intervenes. - -<<fread>> also advances the file position indicator (if any) for -<[fp]> by the number of @emph{characters} actually read. - -RETURNS -The result of <<fread>> is the number of elements it succeeded in -reading. - -PORTABILITY -ANSI C requires <<fread>>. - -Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>, -<<lseek>>, <<read>>, <<sbrk>>, <<write>>. -*/ - -#include <stdio.h> -#include <string.h> -#include "local.h" - -#ifdef __SCLE -static size_t -_DEFUN (crlf, (fp, buf, count, eof), - FILE * fp _AND - char * buf _AND - size_t count _AND - int eof) -{ - int newcount = 0, r; - char *s, *d, *e; - - if (count == 0) - return 0; - - e = buf + count; - for (s=d=buf; s<e-1; s++) - { - if (*s == '\r' && s[1] == '\n') - s++; - *d++ = *s; - } - if (s < e) - { - if (*s == '\r') - { - int c = __sgetc_raw(fp); - if (c == '\n') - *s = '\n'; - else - ungetc(c, fp); - } - *d++ = *s++; - } - - - while (d < e) - { - r = getc(fp); - if (r == EOF) - return count - (e-d); - *d++ = r; - } - - return count; - -} - -#endif - -size_t -_DEFUN (fread, (buf, size, count, fp), - _PTR buf _AND - size_t size _AND - size_t count _AND - FILE * fp) -{ - register size_t resid; - register char *p; - register int r; - size_t total; - - if ((resid = count * size) == 0) - return 0; - if (fp->_r < 0) - fp->_r = 0; - total = resid; - p = buf; - - while (resid > (r = fp->_r)) - { - (void) memcpy ((void *) p, (void *) fp->_p, (size_t) r); - fp->_p += r; - /* fp->_r = 0 ... done in __srefill */ - p += r; - resid -= r; - if (__srefill (fp)) - { - /* no more input: return partial result */ -#ifdef __SCLE - if (fp->_flags & __SCLE) - return crlf(fp, buf, total-resid, 1) / size; -#endif - return (total - resid) / size; - } - } - (void) memcpy ((void *) p, (void *) fp->_p, resid); - fp->_r -= resid; - fp->_p += resid; -#ifdef __SCLE - if (fp->_flags & __SCLE) - return crlf(fp, buf, total, 0) / size; -#endif - return count; -} |