mirror of
https://github.com/godotengine/godot.git
synced 2024-12-03 09:52:18 +08:00
cbedb54408
In #10973 I reset the state of the stream in get_pos() assuming that the ftell failing would cause proper error checking. This is not how this class was designed, however. This commit fixes the get_8() method to not return unitialized data on eof, and removes the wrong error resets added in #10973. This fixes #11022
297 lines
6.9 KiB
C++
297 lines
6.9 KiB
C++
/*************************************************************************/
|
|
/* file_access_unix.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/*************************************************************************/
|
|
#include "file_access_unix.h"
|
|
|
|
#if defined(UNIX_ENABLED) || defined(LIBC_FILEIO_ENABLED)
|
|
|
|
#include "core/os/os.h"
|
|
#include "print_string.h"
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
|
|
#if defined(UNIX_ENABLED)
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
#ifndef ANDROID_ENABLED
|
|
#include <sys/statvfs.h>
|
|
#endif
|
|
|
|
#ifdef MSVC
|
|
#define S_ISREG(m) ((m)&_S_IFREG)
|
|
#include <io.h>
|
|
#endif
|
|
#ifndef S_ISREG
|
|
#define S_ISREG(m) ((m)&S_IFREG)
|
|
#endif
|
|
|
|
void FileAccessUnix::check_errors() const {
|
|
|
|
ERR_FAIL_COND(!f);
|
|
|
|
if (feof(f)) {
|
|
|
|
last_error = ERR_FILE_EOF;
|
|
}
|
|
}
|
|
|
|
Error FileAccessUnix::_open(const String &p_path, int p_mode_flags) {
|
|
|
|
if (f)
|
|
fclose(f);
|
|
f = NULL;
|
|
|
|
path = fix_path(p_path);
|
|
//printf("opening %ls, %i\n", path.c_str(), Memory::get_static_mem_usage());
|
|
|
|
ERR_FAIL_COND_V(f, ERR_ALREADY_IN_USE);
|
|
const char *mode_string;
|
|
|
|
if (p_mode_flags == READ)
|
|
mode_string = "rb";
|
|
else if (p_mode_flags == WRITE)
|
|
mode_string = "wb";
|
|
else if (p_mode_flags == READ_WRITE)
|
|
mode_string = "rb+";
|
|
else if (p_mode_flags == WRITE_READ)
|
|
mode_string = "wb+";
|
|
else
|
|
return ERR_INVALID_PARAMETER;
|
|
|
|
/* pretty much every implementation that uses fopen as primary
|
|
backend (unix-compatible mostly) supports utf8 encoding */
|
|
|
|
//printf("opening %s as %s\n", p_path.utf8().get_data(), path.utf8().get_data());
|
|
struct stat st;
|
|
int err = stat(path.utf8().get_data(), &st);
|
|
if (!err) {
|
|
switch (st.st_mode & S_IFMT) {
|
|
case S_IFLNK:
|
|
case S_IFREG:
|
|
break;
|
|
default:
|
|
return ERR_FILE_CANT_OPEN;
|
|
}
|
|
}
|
|
|
|
if (is_backup_save_enabled() && (p_mode_flags & WRITE) && !(p_mode_flags & READ)) {
|
|
save_path = path;
|
|
path = path + ".tmp";
|
|
//print_line("saving instead to "+path);
|
|
}
|
|
|
|
f = fopen(path.utf8().get_data(), mode_string);
|
|
|
|
if (f == NULL) {
|
|
last_error = ERR_FILE_CANT_OPEN;
|
|
return ERR_FILE_CANT_OPEN;
|
|
} else {
|
|
last_error = OK;
|
|
flags = p_mode_flags;
|
|
return OK;
|
|
}
|
|
}
|
|
|
|
void FileAccessUnix::close() {
|
|
|
|
if (!f)
|
|
return;
|
|
|
|
fclose(f);
|
|
f = NULL;
|
|
|
|
if (close_notification_func) {
|
|
close_notification_func(path, flags);
|
|
}
|
|
|
|
if (save_path != "") {
|
|
|
|
//unlink(save_path.utf8().get_data());
|
|
//print_line("renaming..");
|
|
int rename_error = rename((save_path + ".tmp").utf8().get_data(), save_path.utf8().get_data());
|
|
|
|
if (rename_error && close_fail_notify) {
|
|
close_fail_notify(save_path);
|
|
}
|
|
|
|
save_path = "";
|
|
ERR_FAIL_COND(rename_error != 0);
|
|
}
|
|
}
|
|
|
|
bool FileAccessUnix::is_open() const {
|
|
|
|
return (f != NULL);
|
|
}
|
|
|
|
void FileAccessUnix::seek(size_t p_position) {
|
|
|
|
ERR_FAIL_COND(!f);
|
|
|
|
last_error = OK;
|
|
if (fseek(f, p_position, SEEK_SET))
|
|
check_errors();
|
|
}
|
|
|
|
void FileAccessUnix::seek_end(int64_t p_position) {
|
|
|
|
ERR_FAIL_COND(!f);
|
|
|
|
if (fseek(f, p_position, SEEK_END))
|
|
check_errors();
|
|
}
|
|
|
|
size_t FileAccessUnix::get_pos() const {
|
|
|
|
ERR_FAIL_COND_V(!f, 0);
|
|
|
|
int pos = ftell(f);
|
|
if (pos < 0) {
|
|
check_errors();
|
|
ERR_FAIL_V(0);
|
|
}
|
|
return pos;
|
|
}
|
|
|
|
size_t FileAccessUnix::get_len() const {
|
|
|
|
ERR_FAIL_COND_V(!f, 0);
|
|
|
|
int pos = ftell(f);
|
|
ERR_FAIL_COND_V(pos < 0, 0);
|
|
ERR_FAIL_COND_V(fseek(f, 0, SEEK_END), 0);
|
|
int size = ftell(f);
|
|
ERR_FAIL_COND_V(size < 0, 0);
|
|
ERR_FAIL_COND_V(fseek(f, pos, SEEK_SET), 0);
|
|
|
|
return size;
|
|
}
|
|
|
|
bool FileAccessUnix::eof_reached() const {
|
|
|
|
return last_error == ERR_FILE_EOF;
|
|
}
|
|
|
|
uint8_t FileAccessUnix::get_8() const {
|
|
|
|
ERR_FAIL_COND_V(!f, 0);
|
|
uint8_t b;
|
|
if (fread(&b, 1, 1, f) == 0) {
|
|
check_errors();
|
|
b = '\0';
|
|
}
|
|
return b;
|
|
}
|
|
|
|
int FileAccessUnix::get_buffer(uint8_t *p_dst, int p_length) const {
|
|
|
|
ERR_FAIL_COND_V(!f, -1);
|
|
int read = fread(p_dst, 1, p_length, f);
|
|
check_errors();
|
|
return read;
|
|
};
|
|
|
|
Error FileAccessUnix::get_error() const {
|
|
|
|
return last_error;
|
|
}
|
|
|
|
void FileAccessUnix::store_8(uint8_t p_dest) {
|
|
|
|
ERR_FAIL_COND(!f);
|
|
ERR_FAIL_COND(fwrite(&p_dest, 1, 1, f) != 1);
|
|
}
|
|
|
|
bool FileAccessUnix::file_exists(const String &p_path) {
|
|
|
|
int err;
|
|
struct stat st;
|
|
String filename = fix_path(p_path);
|
|
|
|
// Does the name exist at all?
|
|
err = stat(filename.utf8().get_data(), &st);
|
|
if (err)
|
|
return false;
|
|
|
|
#ifdef UNIX_ENABLED
|
|
// See if we have access to the file
|
|
if (access(filename.utf8().get_data(), F_OK))
|
|
return false;
|
|
#else
|
|
if (_access(filename.utf8().get_data(), 4) == -1)
|
|
return false;
|
|
#endif
|
|
|
|
// See if this is a regular file
|
|
switch (st.st_mode & S_IFMT) {
|
|
case S_IFLNK:
|
|
case S_IFREG:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
uint64_t FileAccessUnix::_get_modified_time(const String &p_file) {
|
|
|
|
String file = fix_path(p_file);
|
|
struct stat flags;
|
|
int err = stat(file.utf8().get_data(), &flags);
|
|
|
|
if (!err) {
|
|
return flags.st_mtime;
|
|
} else {
|
|
print_line("ERROR IN: " + p_file);
|
|
|
|
ERR_FAIL_V(0);
|
|
};
|
|
}
|
|
|
|
FileAccess *FileAccessUnix::create_libc() {
|
|
|
|
return memnew(FileAccessUnix);
|
|
}
|
|
|
|
CloseNotificationFunc FileAccessUnix::close_notification_func = NULL;
|
|
|
|
FileAccessUnix::FileAccessUnix() {
|
|
|
|
f = NULL;
|
|
flags = 0;
|
|
last_error = OK;
|
|
}
|
|
|
|
FileAccessUnix::~FileAccessUnix() {
|
|
|
|
close();
|
|
}
|
|
|
|
#endif
|