mirror of
https://github.com/sheumann/hush.git
synced 2024-12-27 01:32:08 +00:00
179 lines
3.2 KiB
C
179 lines
3.2 KiB
C
/*
|
|
* Replacements for common but usually nonstandard functions that aren't
|
|
* supplied by all platforms.
|
|
*
|
|
* Copyright (C) 2009 by Dan Fandrich <dan@coneharvesters.com>, et. al.
|
|
*
|
|
* Licensed under GPLv2, see file LICENSE in this source tree.
|
|
*/
|
|
#include "libbb.h"
|
|
|
|
#ifndef HAVE_STRCHRNUL
|
|
char* FAST_FUNC strchrnul(const char *s, int c)
|
|
{
|
|
while (*s != '\0' && *s != c)
|
|
s++;
|
|
return (char*)s;
|
|
}
|
|
#endif
|
|
|
|
#ifndef HAVE_VASPRINTF
|
|
int FAST_FUNC vasprintf(char **string_ptr, const char *format, va_list p)
|
|
{
|
|
int r;
|
|
va_list p2;
|
|
char buf[128];
|
|
|
|
va_copy(p2, p);
|
|
r = vsnprintf(buf, 128, format, p);
|
|
va_end(p);
|
|
|
|
/* Note: can't use xstrdup/xmalloc, they call vasprintf (us) on failure! */
|
|
|
|
if (r < 128) {
|
|
va_end(p2);
|
|
*string_ptr = strdup(buf);
|
|
return (*string_ptr ? r : -1);
|
|
}
|
|
|
|
*string_ptr = malloc(r+1);
|
|
r = (*string_ptr ? vsnprintf(*string_ptr, r+1, format, p2) : -1);
|
|
va_end(p2);
|
|
|
|
return r;
|
|
}
|
|
#endif
|
|
|
|
#ifndef HAVE_DPRINTF
|
|
/* dprintf is now part of POSIX.1, but was only added in 2008 */
|
|
int dprintf(int fd, const char *format, ...)
|
|
{
|
|
va_list p;
|
|
int r;
|
|
char *string_ptr;
|
|
|
|
va_start(p, format);
|
|
r = vasprintf(&string_ptr, format, p);
|
|
va_end(p);
|
|
if (r >= 0) {
|
|
r = full_write(fd, string_ptr, r);
|
|
free(string_ptr);
|
|
}
|
|
return r;
|
|
}
|
|
#endif
|
|
|
|
#ifndef HAVE_MEMRCHR
|
|
/* Copyright (C) 2005 Free Software Foundation, Inc.
|
|
* memrchr() is a GNU function that might not be available everywhere.
|
|
* It's basically the inverse of memchr() - search backwards in a
|
|
* memory block for a particular character.
|
|
*/
|
|
void* FAST_FUNC memrchr(const void *s, int c, size_t n)
|
|
{
|
|
const char *start = s, *end = s;
|
|
|
|
end += n - 1;
|
|
|
|
while (end >= start) {
|
|
if (*end == (char)c)
|
|
return (void *) end;
|
|
end--;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
#ifndef HAVE_MKDTEMP
|
|
/* This is now actually part of POSIX.1, but was only added in 2008 */
|
|
char* FAST_FUNC mkdtemp(char *template)
|
|
{
|
|
if (mktemp(template) == NULL || mkdir(template, 0700) != 0)
|
|
return NULL;
|
|
return template;
|
|
}
|
|
#endif
|
|
|
|
#ifndef HAVE_STRCASESTR
|
|
/* Copyright (c) 1999, 2000 The ht://Dig Group */
|
|
char* FAST_FUNC strcasestr(const char *s, const char *pattern)
|
|
{
|
|
int length = strlen(pattern);
|
|
|
|
while (*s) {
|
|
if (strncasecmp(s, pattern, length) == 0)
|
|
return (char *)s;
|
|
s++;
|
|
}
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#ifndef HAVE_STRSEP
|
|
/* Copyright (C) 2004 Free Software Foundation, Inc. */
|
|
char* FAST_FUNC strsep(char **stringp, const char *delim)
|
|
{
|
|
char *start = *stringp;
|
|
char *ptr;
|
|
|
|
if (!start)
|
|
return NULL;
|
|
|
|
if (!*delim)
|
|
ptr = start + strlen(start);
|
|
else {
|
|
ptr = strpbrk(start, delim);
|
|
if (!ptr) {
|
|
*stringp = NULL;
|
|
return start;
|
|
}
|
|
}
|
|
|
|
*ptr = '\0';
|
|
*stringp = ptr + 1;
|
|
|
|
return start;
|
|
}
|
|
#endif
|
|
|
|
#ifndef HAVE_STPCPY
|
|
char* FAST_FUNC stpcpy(char *p, const char *to_add)
|
|
{
|
|
while ((*p = *to_add) != '\0') {
|
|
p++;
|
|
to_add++;
|
|
}
|
|
return p;
|
|
}
|
|
#endif
|
|
|
|
#ifndef HAVE_GETLINE
|
|
ssize_t FAST_FUNC getline(char **lineptr, size_t *n, FILE *stream)
|
|
{
|
|
int ch;
|
|
char *line = *lineptr;
|
|
size_t alloced = *n;
|
|
size_t len = 0;
|
|
|
|
do {
|
|
ch = fgetc(stream);
|
|
if (ch == EOF)
|
|
break;
|
|
if (len + 1 >= alloced) {
|
|
alloced += alloced/4 + 64;
|
|
line = xrealloc(line, alloced);
|
|
}
|
|
line[len++] = ch;
|
|
} while (ch != '\n');
|
|
|
|
if (len == 0)
|
|
return -1;
|
|
|
|
line[len] = '\0';
|
|
*lineptr = line;
|
|
*n = alloced;
|
|
return len;
|
|
}
|
|
#endif
|