1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 1995 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984 AT&T */
/* All Rights Reserved */
#pragma ident "%Z%%M% %I% %E% SMI"
/*LINTLIBRARY*/
/*
* This version writes directly to the buffer rather than looping on putc.
* Ptr args aren't checked for NULL because the program would be a
* catastrophic mess anyway. Better to abort than just to return NULL.
*/
#include <stdio.h>
#include "stdiom.h"
#include <errno.h>
#include <memory.h>
static char *memnulccpy(char *, char *, int, int);
int
fputs(char *ptr, FILE *iop)
{
int ndone = 0, n;
unsigned char *cptr, *bufend;
char *p;
char c;
if (_WRTCHK(iop)) {
iop->_flag |= _IOERR;
#ifdef POSIX
errno = EBADF;
#endif /* POSIX */
return (EOF);
}
bufend = iop->_base + iop->_bufsiz;
if ((iop->_flag & _IONBF) == 0) {
if (iop->_flag & _IOLBF) {
for ( ; ; ptr += n) {
while ((n = bufend - (cptr = iop->_ptr)) <= 0)
/* full buf */
if (_xflsbuf(iop) == EOF)
return(EOF);
if ((p = memnulccpy((char *) cptr, ptr, '\n', n)) != NULL) {
/*
* Copy terminated either because we
* saw a newline or we saw a NUL (end
* of string).
*/
c = *(p - 1); /* last character moved */
if (c == '\0')
p--; /* didn't write '\0' */
n = p - (char *) cptr;
}
iop->_cnt -= n;
iop->_ptr += n;
_BUFSYNC(iop);
ndone += n;
if (p != NULL) {
/*
* We found either a newline or a NUL.
* If we found a newline, flush the
* buffer.
* If we found a NUL, we're done.
*/
if (c == '\n') {
if (_xflsbuf(iop) == EOF)
return(EOF);
} else {
/* done */
return(ndone);
}
}
}
} else {
for ( ; ; ptr += n) {
while ((n = bufend - (cptr = iop->_ptr)) <= 0)
/* full buf */
if (_xflsbuf(iop) == EOF)
return(EOF);
if ((p = memccpy((char *) cptr, ptr, '\0', n)) != NULL)
n = (p - (char *) cptr) - 1;
iop->_cnt -= n;
iop->_ptr += n;
_BUFSYNC(iop);
ndone += n;
if (p != NULL) {
/* done */
return(ndone);
}
}
}
} else {
/* write out to an unbuffered file */
return (write(iop->_file, ptr, strlen(ptr)));
}
}
/*
* Copy s2 to s1, stopping if character c or a NUL is copied.
* Copy no more than n bytes.
* Return a pointer to the byte after character c or NUL in the copy,
* or NULL if c or NUL is not found in the first n bytes.
*/
static char *
memnulccpy(char *s1, char *s2, int c, int n)
{
int cmoved;
while (--n >= 0) {
cmoved = *s2++;
if ((*s1++ = cmoved) == '\0' || cmoved == c)
return (s1);
}
return (0);
}
|
