fvwrite.c (947d1011715bdb966f59b6d6a6b39e971c0a08ea) fvwrite.c (64a965e7078acf9079cbe7f2c001852d4f6f2832)
1/*-
2 * Copyright (c) 1990, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Chris Torek.
7 *
8 * Redistribution and use in source and binary forms, with or without

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34 * SUCH DAMAGE.
35 */
36
37#if defined(LIBC_SCCS) && !defined(lint)
38#if 0
39static char sccsid[] = "@(#)fvwrite.c 8.1 (Berkeley) 6/4/93";
40#endif
41static const char rcsid[] =
1/*-
2 * Copyright (c) 1990, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Chris Torek.
7 *
8 * Redistribution and use in source and binary forms, with or without

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34 * SUCH DAMAGE.
35 */
36
37#if defined(LIBC_SCCS) && !defined(lint)
38#if 0
39static char sccsid[] = "@(#)fvwrite.c 8.1 (Berkeley) 6/4/93";
40#endif
41static const char rcsid[] =
42 "$Id: fvwrite.c,v 1.6 1997/12/24 13:17:13 ache Exp $";
42 "$Id: fvwrite.c,v 1.7 1997/12/24 23:23:18 ache Exp $";
43#endif /* LIBC_SCCS and not lint */
44
45#include <stdio.h>
43#endif /* LIBC_SCCS and not lint */
44
45#include <stdio.h>
46#include <stdlib.h>
46#include <string.h>
47#include "local.h"
48#include "fvwrite.h"
49
50/*
51 * Write some memory regions. Return zero on success, EOF on error.
52 *
53 * This routine is large and unsightly, but most of the ugliness due

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106 * String output is a special case: write as many bytes
107 * as fit, but pretend we wrote everything. This makes
108 * snprintf() return the number of bytes needed, rather
109 * than the number used, and avoids its write function
110 * (so that the write function can be invalid).
111 */
112 do {
113 GETIOV(;);
47#include <string.h>
48#include "local.h"
49#include "fvwrite.h"
50
51/*
52 * Write some memory regions. Return zero on success, EOF on error.
53 *
54 * This routine is large and unsightly, but most of the ugliness due

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107 * String output is a special case: write as many bytes
108 * as fit, but pretend we wrote everything. This makes
109 * snprintf() return the number of bytes needed, rather
110 * than the number used, and avoids its write function
111 * (so that the write function can be invalid).
112 */
113 do {
114 GETIOV(;);
115 if ((fp->_flags & (__SALC | __SSTR)) ==
116 (__SALC | __SSTR) && fp->_w < len) {
117 size_t blen = fp->_p - fp->_bf._base;
118
119 /*
120 * Alloc an extra 128 bytes (+ 1 for NULL)
121 * so we don't call realloc(3) so often.
122 */
123 fp->_w = len + 128;
124 fp->_bf._size = blen + len + 128;
125 fp->_bf._base =
126 realloc(fp->_bf._base, fp->_bf._size + 1);
127 if (fp->_bf._base == NULL)
128 goto err;
129 fp->_p = fp->_bf._base + blen;
130 }
114 w = fp->_w;
115 if (fp->_flags & __SSTR) {
116 if (len < w)
117 w = len;
118 if (w > 0) {
119 COPY(w); /* copy MIN(fp->_w,len), */
120 fp->_w -= w;
121 fp->_p += w;

--- 75 unchanged lines hidden --- 		131 w = fp->_w;
132 if (fp->_flags & __SSTR) {
133 if (len < w)
134 w = len;
135 if (w > 0) {
136 COPY(w); /* copy MIN(fp->_w,len), */
137 fp->_w -= w;
138 fp->_p += w;

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