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/* SPDX-License-Identifier: BSD
*
* Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
*
*/
#define FILE_IS_EMPTY
#if defined(__ANDROID_API__) && __ANDROID_API__ < 18
#undef FILE_IS_EMPTY
#include <stdio.h>
#include <stdlib.h>
ssize_t getdelim(char **buf, size_t *bufsiz, int delimiter, FILE *fp)
{
char *ptr, *eptr;
if (*buf == NULL || *bufsiz == 0) {
*bufsiz = BUFSIZ;
if ((*buf = malloc(*bufsiz)) == NULL)
return -1;
}
for (ptr = *buf, eptr = *buf + *bufsiz;;) {
int c = fgetc(fp);
if (c == -1) {
if (feof(fp)) {
ssize_t diff = (ssize_t)(ptr - *buf);
if (diff != 0) {
*ptr = '\0';
return diff;
}
}
return -1;
}
*ptr++ = c;
if (c == delimiter) {
*ptr = '\0';
return ptr - *buf;
}
if (ptr + 2 >= eptr) {
char *nbuf;
size_t nbufsiz = *bufsiz * 2;
ssize_t d = ptr - *buf;
if ((nbuf = realloc(*buf, nbufsiz)) == NULL)
return -1;
*buf = nbuf;
*bufsiz = nbufsiz;
eptr = nbuf + nbufsiz;
ptr = nbuf + d;
}
}
}
ssize_t getline(char **buf, size_t *bufsiz, FILE *fp)
{
return getdelim(buf, bufsiz, '\n', fp);
}
#endif
#if defined(__ANDROID_API__) && __ANDROID_API__ < 24
#undef FILE_IS_EMPTY
#include <string.h>
char *strchrnul(const char *s, int c)
{
char *x = strchr(s, c);
if (!x)
return (char *)s + strlen(s);
return x;
}
#endif
#ifdef FILE_IS_EMPTY
#undef FILE_IS_EMPTY
static char ____x __attribute__((unused));
#endif
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