stdio.c

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#include <sys/types.h>
#include <stdio.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdint.h>
#include <unistd.h>
#include <pthread.h>
#include <errno.h>

#include <object.h>
#include <crt0.h>
#include <list.h>
#include <thread.h>

#include <debug.h>

int fputc(int c, FILE *stream)
{
        if (!stream->size) {
                int ret;

                ret = write(fileno(stream), (char *)&c, 1);
                if (ret < 0) {
                        return ret;
                }

                return c;
        }

        stream->buffer[stream->offset] = (char)c;
        stream->offset++;

        if ((stream->offset == stream->size) || c == '\n' || c == '\r') {
                int ret;

                ret = fflush(stream);
                if (ret < 0) {
                        return ret;
                }
        }

        return c;
}

int fputs(const char *s, FILE *stream)
{
        register int i = 0;
        int ret;

        while (*s) {
                ret = fputc(*s, stream);
                if (ret < 0) {
                        return ret;
                }

                s++;
                i++;
        }

        return i;
}

int fflush(FILE *stream)
{
        int ret;

        ret = write(fileno(stream), stream->buffer, stream->offset);
        if (ret < 0) {
                return ret;
        }

        stream->offset -= ret;
        return 0;
}

void clearerr(FILE *stream)
{
}

int feof(FILE *stream)
{
        return -ENOSYS;
}

int ferror(FILE *stream)
{
        return -ENOSYS;
}

int fileno(FILE *stream)
{
        struct thread *tcb;
        int fd;

        tcb = pthread_self();
        if (!tcb) {
                return -EFAULT;
        }

        fd = (int)((unsigned long)stream - (unsigned long)tcb->file_ctx->table);
        fd /= sizeof(tcb->file_ctx->table[0]);

        return fd;
}

/* End of a file */