1 | /*
|
---|
2 | * Replacements for common but usually nonstandard functions that aren't
|
---|
3 | * supplied by all platforms.
|
---|
4 | *
|
---|
5 | * Copyright (C) 2009 by Dan Fandrich <dan@coneharvesters.com>, et. al.
|
---|
6 | *
|
---|
7 | * Licensed under GPLv2, see file LICENSE in this source tree.
|
---|
8 | */
|
---|
9 | #include "libbb.h"
|
---|
10 |
|
---|
11 | #ifndef HAVE_STRCHRNUL
|
---|
12 | char* FAST_FUNC strchrnul(const char *s, int c)
|
---|
13 | {
|
---|
14 | while (*s != '\0' && *s != c)
|
---|
15 | s++;
|
---|
16 | return (char*)s;
|
---|
17 | }
|
---|
18 | #endif
|
---|
19 |
|
---|
20 | #ifndef HAVE_VASPRINTF
|
---|
21 | int FAST_FUNC vasprintf(char **string_ptr, const char *format, va_list p)
|
---|
22 | {
|
---|
23 | int r;
|
---|
24 | va_list p2;
|
---|
25 | char buf[128];
|
---|
26 |
|
---|
27 | va_copy(p2, p);
|
---|
28 | r = vsnprintf(buf, 128, format, p);
|
---|
29 | va_end(p);
|
---|
30 |
|
---|
31 | if (r < 128) {
|
---|
32 | va_end(p2);
|
---|
33 | *string_ptr = xstrdup(buf);
|
---|
34 | return r;
|
---|
35 | }
|
---|
36 |
|
---|
37 | *string_ptr = xmalloc(r+1);
|
---|
38 | r = vsnprintf(*string_ptr, r+1, format, p2);
|
---|
39 | va_end(p2);
|
---|
40 |
|
---|
41 | return r;
|
---|
42 | }
|
---|
43 | #endif
|
---|
44 |
|
---|
45 | #ifndef HAVE_FDPRINTF
|
---|
46 | /* dprintf is now actually part of POSIX.1, but was only added in 2008 */
|
---|
47 | int fdprintf(int fd, const char *format, ...)
|
---|
48 | {
|
---|
49 | va_list p;
|
---|
50 | int r;
|
---|
51 | char *string_ptr;
|
---|
52 |
|
---|
53 | va_start(p, format);
|
---|
54 | r = vasprintf(&string_ptr, format, p);
|
---|
55 | va_end(p);
|
---|
56 | if (r >= 0) {
|
---|
57 | r = full_write(fd, string_ptr, r);
|
---|
58 | free(string_ptr);
|
---|
59 | }
|
---|
60 | return r;
|
---|
61 | }
|
---|
62 | #endif
|
---|
63 |
|
---|
64 | #ifndef HAVE_MEMRCHR
|
---|
65 | /* Copyright (C) 2005 Free Software Foundation, Inc.
|
---|
66 | * memrchr() is a GNU function that might not be available everywhere.
|
---|
67 | * It's basically the inverse of memchr() - search backwards in a
|
---|
68 | * memory block for a particular character.
|
---|
69 | */
|
---|
70 | void* FAST_FUNC memrchr(const void *s, int c, size_t n)
|
---|
71 | {
|
---|
72 | const char *start = s, *end = s;
|
---|
73 |
|
---|
74 | end += n - 1;
|
---|
75 |
|
---|
76 | while (end >= start) {
|
---|
77 | if (*end == (char)c)
|
---|
78 | return (void *) end;
|
---|
79 | end--;
|
---|
80 | }
|
---|
81 |
|
---|
82 | return NULL;
|
---|
83 | }
|
---|
84 | #endif
|
---|
85 |
|
---|
86 | #ifndef HAVE_MKDTEMP
|
---|
87 | /* This is now actually part of POSIX.1, but was only added in 2008 */
|
---|
88 | char* FAST_FUNC mkdtemp(char *template)
|
---|
89 | {
|
---|
90 | if (mktemp(template) == NULL || mkdir(template, 0700) != 0)
|
---|
91 | return NULL;
|
---|
92 | return template;
|
---|
93 | }
|
---|
94 | #endif
|
---|
95 |
|
---|
96 | #ifndef HAVE_STRCASESTR
|
---|
97 | /* Copyright (c) 1999, 2000 The ht://Dig Group */
|
---|
98 | char* FAST_FUNC strcasestr(const char *s, const char *pattern)
|
---|
99 | {
|
---|
100 | int length = strlen(pattern);
|
---|
101 |
|
---|
102 | while (*s) {
|
---|
103 | if (strncasecmp(s, pattern, length) == 0)
|
---|
104 | return (char *)s;
|
---|
105 | s++;
|
---|
106 | }
|
---|
107 | return 0;
|
---|
108 | }
|
---|
109 | #endif
|
---|
110 |
|
---|
111 | #ifndef HAVE_STRSEP
|
---|
112 | /* Copyright (C) 2004 Free Software Foundation, Inc. */
|
---|
113 | char* FAST_FUNC strsep(char **stringp, const char *delim)
|
---|
114 | {
|
---|
115 | char *start = *stringp;
|
---|
116 | char *ptr;
|
---|
117 |
|
---|
118 | if (!start)
|
---|
119 | return NULL;
|
---|
120 |
|
---|
121 | if (!*delim)
|
---|
122 | ptr = start + strlen(start);
|
---|
123 | else {
|
---|
124 | ptr = strpbrk(start, delim);
|
---|
125 | if (!ptr) {
|
---|
126 | *stringp = NULL;
|
---|
127 | return start;
|
---|
128 | }
|
---|
129 | }
|
---|
130 |
|
---|
131 | *ptr = '\0';
|
---|
132 | *stringp = ptr + 1;
|
---|
133 |
|
---|
134 | return start;
|
---|
135 | }
|
---|
136 | #endif
|
---|