Egor00f
c121db7a88
Use bitfield `flags` flags in file instead of `int` variables `mode`, `error`, `eof`. And rewrite weird logic opening/close files Reviewed-on: #691 Reviewed-by: Ivan B <1+dunkaist@noreply.localhost> Reviewed-by: Kiril Lipatov <lipatov.kiril@gmail.com> Co-authored-by: Egor00f <y.yarin@inbox.ru>
47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
#include <stdio.h>
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#include "../sys/_conio.h"
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#include <sys/ksys.h>
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#include <errno.h>
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#include <shell_api.h>
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size_t fwrite(const void* restrict ptr, size_t size, size_t nmemb, FILE* restrict stream)
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{
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unsigned bytes_written = 0;
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unsigned bytes_count = size * nmemb;
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if (!stream) {
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errno = EBADF;
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return 0;
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}
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if (size <= 0 || nmemb <= 0) {
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errno = EINVAL;
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stream->flags.error = true;
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return 0;
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}
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if (stream == stdout) {
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console_write((char*)ptr, bytes_count);
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return nmemb;
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}
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if (stream == stderr) {
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for (size_t i = 0; i < bytes_count; i++) {
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char c = *(char*)(ptr + i);
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_ksys_debug_putc(c);
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}
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return nmemb;
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}
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if (stream->flags.write) {
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unsigned status = _ksys_file_write_file(stream->name, stream->position, bytes_count, ptr, &bytes_written);
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if (status != KSYS_FS_ERR_SUCCESS) {
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errno = EIO;
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stream->flags.error = true;
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return 0;
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}
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stream->position += bytes_written;
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}
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return bytes_written / size;
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}
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