2 * Replacements for common but usually nonstandard functions that aren't
3 * supplied by all platforms.
5 * Copyright (C) 2009 by Dan Fandrich <dan@coneharvesters.com>, et. al.
7 * Licensed under GPLv2, see file LICENSE in this source tree.
11 #ifndef HAVE_STRCHRNUL
12 char* FAST_FUNC strchrnul(const char *s, int c)
14 while (*s != '\0' && *s != c)
21 int FAST_FUNC usleep(unsigned usec)
24 ts.tv_sec = usec / 1000000u;
25 ts.tv_nsec = (usec % 1000000u) * 1000u;
27 * If a signal has non-default handler, nanosleep returns early.
28 * Our version of usleep doesn't return early
29 * if interrupted by such signals:
32 while (nanosleep(&ts, &ts) != 0)
38 #ifndef HAVE_VASPRINTF
39 int FAST_FUNC vasprintf(char **string_ptr, const char *format, va_list p)
46 r = vsnprintf(buf, 128, format, p);
49 /* Note: can't use xstrdup/xmalloc, they call vasprintf (us) on failure! */
53 *string_ptr = strdup(buf);
54 return (*string_ptr ? r : -1);
57 *string_ptr = malloc(r+1);
58 r = (*string_ptr ? vsnprintf(*string_ptr, r+1, format, p2) : -1);
66 /* dprintf is now part of POSIX.1, but was only added in 2008 */
67 int dprintf(int fd, const char *format, ...)
74 r = vasprintf(&string_ptr, format, p);
77 r = full_write(fd, string_ptr, r);
85 /* Copyright (C) 2005 Free Software Foundation, Inc.
86 * memrchr() is a GNU function that might not be available everywhere.
87 * It's basically the inverse of memchr() - search backwards in a
88 * memory block for a particular character.
90 void* FAST_FUNC memrchr(const void *s, int c, size_t n)
92 const char *start = s, *end = s;
96 while (end >= start) {
107 /* This is now actually part of POSIX.1, but was only added in 2008 */
108 char* FAST_FUNC mkdtemp(char *template)
110 if (mktemp(template) == NULL || mkdir(template, 0700) != 0)
116 #ifndef HAVE_STRCASESTR
117 /* Copyright (c) 1999, 2000 The ht://Dig Group */
118 char* FAST_FUNC strcasestr(const char *s, const char *pattern)
120 int length = strlen(pattern);
123 if (strncasecmp(s, pattern, length) == 0)
132 /* Copyright (C) 2004 Free Software Foundation, Inc. */
133 char* FAST_FUNC strsep(char **stringp, const char *delim)
135 char *start = *stringp;
142 ptr = start + strlen(start);
144 ptr = strpbrk(start, delim);
159 char* FAST_FUNC stpcpy(char *p, const char *to_add)
161 while ((*p = *to_add) != '\0') {
170 ssize_t FAST_FUNC getline(char **lineptr, size_t *n, FILE *stream)
173 char *line = *lineptr;
181 if (len + 1 >= alloced) {
182 alloced += alloced/4 + 64;
183 line = xrealloc(line, alloced);
186 } while (ch != '\n');
198 #ifndef HAVE_TTYNAME_R
199 int ttyname_r(int fd, char *buf, size_t buflen)
202 char path[sizeof("/proc/self/fd/%d") + sizeof(int)*3];
205 return errno == EINVAL ? ENOTTY : errno;
206 sprintf(path, "/proc/self/fd/%d", fd);
207 r = readlink(path, buf, buflen);