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258 lines
6.0 KiB
C++
258 lines
6.0 KiB
C++
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/*************************************************************************/
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/* file_access_unix.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "file_access_unix.h"
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#if defined(UNIX_ENABLED) || defined(LIBC_FILEIO_ENABLED)
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#include <sys/types.h>
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#include <sys/stat.h>
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#include "print_string.h"
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#include "core/os/os.h"
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#ifndef ANDROID_ENABLED
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#include <sys/statvfs.h>
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#endif
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#ifdef MSVC
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#define S_ISREG(m) ((m)&_S_IFREG)
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#endif
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#ifndef S_ISREG
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#define S_ISREG(m) ((m) & S_IFREG)
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#endif
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void FileAccessUnix::check_errors() const {
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ERR_FAIL_COND(!f);
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if (feof(f)) {
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last_error=ERR_FILE_EOF;
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}
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}
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Error FileAccessUnix::_open(const String& p_path, int p_mode_flags) {
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if (f)
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fclose(f);
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f=NULL;
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String path=fix_path(p_path);
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//printf("opening %ls\n", path.c_str());
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ERR_FAIL_COND_V(f,ERR_ALREADY_IN_USE);
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const char* mode_string;
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if (p_mode_flags==READ)
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mode_string="rb";
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else if (p_mode_flags==WRITE)
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mode_string="wb";
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else if (p_mode_flags==READ_WRITE)
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mode_string="wb+";
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else
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return ERR_INVALID_PARAMETER;
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/* pretty much every implementation that uses fopen as primary
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backend (unix-compatible mostly) supports utf8 encoding */
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//printf("opening %s as %s\n", p_path.utf8().get_data(), path.utf8().get_data());
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struct stat st;
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if (stat(path.utf8().get_data(),&st) == 0) {
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if (!S_ISREG(st.st_mode))
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return ERR_FILE_CANT_OPEN;
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};
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if (is_backup_save_enabled() && p_mode_flags&WRITE && !(p_mode_flags&READ)) {
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save_path=path;
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path=path+".tmp";
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//print_line("saving instead to "+path);
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}
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f=fopen(path.utf8().get_data(),mode_string);
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if (f==NULL) {
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last_error=ERR_FILE_CANT_OPEN;
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return ERR_FILE_CANT_OPEN;
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} else {
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last_error=OK;
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flags=p_mode_flags;
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return OK;
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}
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}
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void FileAccessUnix::close() {
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if (!f)
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return;
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fclose(f);
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f = NULL;
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if (save_path!="") {
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//unlink(save_path.utf8().get_data());
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//print_line("renaming..");
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int rename_error = rename((save_path+".tmp").utf8().get_data(),save_path.utf8().get_data());
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save_path="";
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ERR_FAIL_COND( rename_error != 0);
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}
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}
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bool FileAccessUnix::is_open() const{
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return (f!=NULL);
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}
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void FileAccessUnix::seek(size_t p_position) {
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ERR_FAIL_COND(!f);
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last_error=OK;
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if ( fseek(f,p_position,SEEK_SET) )
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check_errors();
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}
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void FileAccessUnix::seek_end(int64_t p_position) {
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ERR_FAIL_COND(!f);
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if ( fseek(f,p_position,SEEK_END) )
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check_errors();
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}
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size_t FileAccessUnix::get_pos() const{
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size_t aux_position=0;
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if ( !(aux_position = ftell(f)) ) {
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check_errors();
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};
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return aux_position;
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}
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size_t FileAccessUnix::get_len() const{
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ERR_FAIL_COND_V(!f,0);
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FileAccessUnix *fau = const_cast<FileAccessUnix*>(this);
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int pos = fau->get_pos();
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fau->seek_end();
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int size = fau->get_pos();
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fau->seek(pos);
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return size;
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}
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bool FileAccessUnix::eof_reached() const{
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return last_error==ERR_FILE_EOF;
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}
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uint8_t FileAccessUnix::get_8() const{
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ERR_FAIL_COND_V(!f,0);
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uint8_t b;
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if (fread(&b,1,1,f) == 0) {
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check_errors();
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};
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return b;
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}
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int FileAccessUnix::get_buffer(uint8_t *p_dst, int p_length) const {
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ERR_FAIL_COND_V(!f,-1);
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int read = fread(p_dst, 1, p_length, f);
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check_errors();
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return read;
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};
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Error FileAccessUnix::get_error() const{
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return last_error;
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}
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void FileAccessUnix::store_8(uint8_t p_dest) {
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ERR_FAIL_COND(!f);
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fwrite(&p_dest,1,1,f);
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}
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bool FileAccessUnix::file_exists(const String &p_path) {
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FILE *g;
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//printf("opening file %s\n", p_fname.c_str());
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String filename=fix_path(p_path);
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g=fopen(filename.utf8().get_data(),"rb");
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if (g==NULL) {
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return false;
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} else {
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fclose(g);
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return true;
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}
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}
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uint64_t FileAccessUnix::_get_modified_time(const String &p_file) {
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String file=fix_path(p_file);
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struct stat flags;
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bool success = (stat(file.utf8().get_data(),&flags)==0);
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if (success) {
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return flags.st_mtime;
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} else {
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print_line("ERROR IN: "+p_file);
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ERR_FAIL_V(0);
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};
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}
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FileAccess * FileAccessUnix::create_libc() {
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return memnew( FileAccessUnix );
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}
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FileAccessUnix::FileAccessUnix() {
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f=NULL;
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flags=0;
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last_error=OK;
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}
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FileAccessUnix::~FileAccessUnix() {
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close();
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}
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#endif
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