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#include "dietstdio.h"
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <stdlib.h>
#ifdef WANT_BUFFERED_STDIO
extern int __stdio_atexit;
extern void __stdio_flushall();
#endif
int __stdio_parse_mode(const char *mode) {
int f=0;
for (;;) {
switch (*mode) {
case 0: return f;
case 'b': break;
case 'r': f=O_RDONLY; break;
case 'w': f=O_WRONLY|O_CREAT|O_TRUNC; break;
case 'a': f=O_WRONLY|O_CREAT|O_APPEND; break;
case '+': f=(f&(~O_WRONLY))|O_RDWR; break;
}
++mode;
}
}
FILE* __stdio_init_file(int fd) {
FILE *tmp=(FILE*)malloc(sizeof(FILE));
if (!tmp) {
close(fd);
errno=ENOMEM;
return 0;
}
tmp->fd=fd;
#ifdef WANT_BUFFERED_STDIO
tmp->bm=0;
tmp->bs=0;
#endif
#ifdef WANT_UNGETC
tmp->ungotten = 0;
#endif
tmp->flags=0;
#ifdef WANT_BUFFERED_STDIO
if (__stdio_atexit==0) {
__stdio_atexit=1;
atexit(__stdio_flushall);
}
tmp->next=__stdio_root;
__stdio_root=tmp;
#endif
return tmp;
}
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