Luna/libs/libc/src/stdio.cpp

#include <errno.h>
#include <luna.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/syscall.h>
#include <unistd.h>

extern "C"
{
    int puts(const char* s)
    {
        int nwritten = fputs(s, stdout);
        if (nwritten < 0) return -1;
        if (putchar('\n') < 0) return -1;
        return nwritten + 1;
    }

    int fputs(const char* s, FILE* stream)
    {
        int result = (int)fwrite(s, strlen(s), 1, stream);
        if (ferror(stream)) return -1;
        return result;
    }

    int fputc(int c, FILE* stream)
    {
        char chr = (char)c;
        fwrite(&chr, 1, 1, stream);
        if (ferror(stream)) { return -1; }
        return c;
    }

    int putc(int c, FILE* stream)
    {
        return fputc(c, stream);
    }

    int putchar(int c)
    {
        return fputc(c, stdout);
    }

    void perror(const char* s)
    {
        int savederr =
            errno; // This was necessary before, but even more now since we clear errno on successful syscalls now.
        if (s && *s) { fprintf(stderr, "%s: ", s); }
        fprintf(stderr, "%s\n", strerror(savederr));
    }

    int remove(const char*)
    {
        NOT_IMPLEMENTED("remove");
    }

    int sscanf(const char*, const char*, ...)
    {
        NOT_IMPLEMENTED("sscanf");
    }

    int fscanf(FILE*, const char*, ...)
    {
        NOT_IMPLEMENTED("fscanf");
    }

    int rename(const char*, const char*)
    {
        NOT_IMPLEMENTED("rename");
    }

    FILE* tmpfile()
    {
        errno = ENOTSUP;
        return NULL;
    }
}