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>
82 lines
1.3 KiB
C
82 lines
1.3 KiB
C
#include "_stdio.h"
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/ksys.h>
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#include <sys/dirent.h>
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/*
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Open new file
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*/
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FILE* fopen_r(const char* restrict _name, const char* restrict _mode, FILE* restrict out)
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{
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if (!_name || !_mode || !out) {
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errno = EINVAL;
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return NULL;
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}
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bool file_not_exits = false;
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ksys_bdfe_t info;
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{
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int err = _ksys_file_get_info(_name, &info);
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switch (err) {
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case KSYS_FS_ERR_SUCCESS:
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if (info.attributes & IS_FOLDER) {
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errno = EISDIR;
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return NULL;
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}
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break;
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case KSYS_FS_ERR_5:
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file_not_exits = true;
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break;
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default:
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errno = err;
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return NULL;
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break;
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}
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}
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out->flags.val = 0;
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out->position = 0;
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out->name = strdup(_name);
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if (strchr(_mode, 'r')) {
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out->flags.read = true;
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if (file_not_exits) {
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errno = ENOENT;
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free(out->name);
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return NULL;
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}
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}
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if (strchr(_mode, 'w')) {
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out->flags.write = true;
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}
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if (strchr(_mode, 'a')) {
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out->flags.val |= _FILEMODE_W | _FILEMODE_A;
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}
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if (strchr(_mode, '+')) {
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out->flags.val |= _FILEMODE_R | _FILEMODE_W;
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}
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if (out->flags.write) {
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if (file_not_exits) {
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int err = _ksys_file_create(_name);
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if (err != KSYS_FS_ERR_SUCCESS) {
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errno = err;
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free(out->name);
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return NULL;
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}
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}
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}
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if (out->flags.append) {
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out->position = info.size;
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}
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return out;
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}
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