godot/drivers/unix/dir_access_unix.cpp
Pedro J. Estébanez aee586553a Improve UX of drive letters
Namely, move the drive dropdown to just the left of the path text box and don't include the former
in the latter.

This improves the UX on Windows.

In the UNIX case, since its concept of drives is (ab)used to provide shortcuts to useful paths, its
dropdown is kept at the original location.
2020-03-03 10:38:34 +01:00

433 lines
11 KiB
C++

/*************************************************************************/
/* dir_access_unix.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 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 */
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/* 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. */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/*************************************************************************/
#include "dir_access_unix.h"
#if defined(UNIX_ENABLED) || defined(LIBC_FILEIO_ENABLED)
#include "core/list.h"
#include "core/os/memory.h"
#include "core/print_string.h"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifndef ANDROID_ENABLED
#include <sys/statvfs.h>
#endif
#ifdef HAVE_MNTENT
#include <mntent.h>
#endif
DirAccess *DirAccessUnix::create_fs() {
return memnew(DirAccessUnix);
}
Error DirAccessUnix::list_dir_begin() {
list_dir_end(); //close any previous dir opening!
//char real_current_dir_name[2048]; //is this enough?!
//getcwd(real_current_dir_name,2048);
//chdir(current_path.utf8().get_data());
dir_stream = opendir(current_dir.utf8().get_data());
//chdir(real_current_dir_name);
if (!dir_stream)
return ERR_CANT_OPEN; //error!
return OK;
}
bool DirAccessUnix::file_exists(String p_file) {
GLOBAL_LOCK_FUNCTION
if (p_file.is_rel_path())
p_file = current_dir.plus_file(p_file);
p_file = fix_path(p_file);
struct stat flags;
bool success = (stat(p_file.utf8().get_data(), &flags) == 0);
if (success && S_ISDIR(flags.st_mode)) {
success = false;
}
return success;
}
bool DirAccessUnix::dir_exists(String p_dir) {
GLOBAL_LOCK_FUNCTION
if (p_dir.is_rel_path())
p_dir = get_current_dir().plus_file(p_dir);
p_dir = fix_path(p_dir);
struct stat flags;
bool success = (stat(p_dir.utf8().get_data(), &flags) == 0);
return (success && S_ISDIR(flags.st_mode));
}
uint64_t DirAccessUnix::get_modified_time(String p_file) {
if (p_file.is_rel_path())
p_file = current_dir.plus_file(p_file);
p_file = fix_path(p_file);
struct stat flags;
bool success = (stat(p_file.utf8().get_data(), &flags) == 0);
if (success) {
return flags.st_mtime;
} else {
ERR_FAIL_V(0);
};
return 0;
};
String DirAccessUnix::get_next() {
if (!dir_stream)
return "";
dirent *entry = readdir(dir_stream);
if (entry == NULL) {
list_dir_end();
return "";
}
String fname = fix_unicode_name(entry->d_name);
// Look at d_type to determine if the entry is a directory, unless
// its type is unknown (the file system does not support it) or if
// the type is a link, in that case we want to resolve the link to
// known if it points to a directory. stat() will resolve the link
// for us.
if (entry->d_type == DT_UNKNOWN || entry->d_type == DT_LNK) {
String f = current_dir.plus_file(fname);
struct stat flags;
if (stat(f.utf8().get_data(), &flags) == 0) {
_cisdir = S_ISDIR(flags.st_mode);
} else {
_cisdir = false;
}
} else {
_cisdir = (entry->d_type == DT_DIR);
}
_cishidden = (fname != "." && fname != ".." && fname.begins_with("."));
return fname;
}
bool DirAccessUnix::current_is_dir() const {
return _cisdir;
}
bool DirAccessUnix::current_is_hidden() const {
return _cishidden;
}
void DirAccessUnix::list_dir_end() {
if (dir_stream)
closedir(dir_stream);
dir_stream = 0;
_cisdir = false;
}
#if defined(HAVE_MNTENT) && defined(X11_ENABLED)
static bool _filter_drive(struct mntent *mnt) {
// Ignore devices that don't point to /dev
if (strncmp(mnt->mnt_fsname, "/dev", 4) != 0) {
return false;
}
// Accept devices mounted at common locations
if (strncmp(mnt->mnt_dir, "/media", 6) == 0 ||
strncmp(mnt->mnt_dir, "/mnt", 4) == 0 ||
strncmp(mnt->mnt_dir, "/home", 5) == 0 ||
strncmp(mnt->mnt_dir, "/run/media", 10) == 0) {
return true;
}
// Ignore everything else
return false;
}
#endif
static void _get_drives(List<String> *list) {
#if defined(HAVE_MNTENT) && defined(X11_ENABLED)
// Check /etc/mtab for the list of mounted partitions
FILE *mtab = setmntent("/etc/mtab", "r");
if (mtab) {
struct mntent mnt;
char strings[4096];
while (getmntent_r(mtab, &mnt, strings, sizeof(strings))) {
if (mnt.mnt_dir != NULL && _filter_drive(&mnt)) {
// Avoid duplicates
if (!list->find(mnt.mnt_dir)) {
list->push_back(mnt.mnt_dir);
}
}
}
endmntent(mtab);
}
#endif
// Add $HOME
const char *home = getenv("HOME");
if (home) {
// Only add if it's not a duplicate
if (!list->find(home)) {
list->push_back(home);
}
// Check $HOME/.config/gtk-3.0/bookmarks
char path[1024];
snprintf(path, 1024, "%s/.config/gtk-3.0/bookmarks", home);
FILE *fd = fopen(path, "r");
if (fd) {
char string[1024];
while (fgets(string, 1024, fd)) {
// Parse only file:// links
if (strncmp(string, "file://", 7) == 0) {
// Strip any unwanted edges on the strings and push_back if it's not a duplicate
String fpath = String(string + 7).strip_edges().split_spaces()[0].percent_decode();
if (!list->find(fpath)) {
list->push_back(fpath);
}
}
}
fclose(fd);
}
}
list->sort();
}
int DirAccessUnix::get_drive_count() {
List<String> list;
_get_drives(&list);
return list.size();
}
String DirAccessUnix::get_drive(int p_drive) {
List<String> list;
_get_drives(&list);
ERR_FAIL_INDEX_V(p_drive, list.size(), "");
return list[p_drive];
}
bool DirAccessUnix::drives_are_shortcuts() {
return true;
}
Error DirAccessUnix::make_dir(String p_dir) {
GLOBAL_LOCK_FUNCTION
if (p_dir.is_rel_path())
p_dir = get_current_dir().plus_file(p_dir);
p_dir = fix_path(p_dir);
bool success = (mkdir(p_dir.utf8().get_data(), S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH) == 0);
int err = errno;
if (success) {
return OK;
};
if (err == EEXIST) {
return ERR_ALREADY_EXISTS;
};
return ERR_CANT_CREATE;
}
Error DirAccessUnix::change_dir(String p_dir) {
GLOBAL_LOCK_FUNCTION
p_dir = fix_path(p_dir);
// prev_dir is the directory we are changing out of
String prev_dir;
char real_current_dir_name[2048];
ERR_FAIL_COND_V(getcwd(real_current_dir_name, 2048) == NULL, ERR_BUG);
if (prev_dir.parse_utf8(real_current_dir_name))
prev_dir = real_current_dir_name; //no utf8, maybe latin?
// try_dir is the directory we are trying to change into
String try_dir = "";
if (p_dir.is_rel_path()) {
String next_dir = current_dir.plus_file(p_dir);
next_dir = next_dir.simplify_path();
try_dir = next_dir;
} else {
try_dir = p_dir;
}
bool worked = (chdir(try_dir.utf8().get_data()) == 0); // we can only give this utf8
if (!worked) {
return ERR_INVALID_PARAMETER;
}
String base = _get_root_path();
if (base != String() && !try_dir.begins_with(base)) {
ERR_FAIL_COND_V(getcwd(real_current_dir_name, 2048) == NULL, ERR_BUG);
String new_dir;
new_dir.parse_utf8(real_current_dir_name);
if (!new_dir.begins_with(base)) {
try_dir = current_dir; //revert
}
}
// the directory exists, so set current_dir to try_dir
current_dir = try_dir;
ERR_FAIL_COND_V(chdir(prev_dir.utf8().get_data()) != 0, ERR_BUG);
return OK;
}
String DirAccessUnix::get_current_dir(bool p_include_drive) {
String base = _get_root_path();
if (base != "") {
String bd = current_dir.replace_first(base, "");
if (bd.begins_with("/"))
return _get_root_string() + bd.substr(1, bd.length());
else
return _get_root_string() + bd;
}
return current_dir;
}
Error DirAccessUnix::rename(String p_path, String p_new_path) {
if (p_path.is_rel_path())
p_path = get_current_dir().plus_file(p_path);
p_path = fix_path(p_path);
if (p_new_path.is_rel_path())
p_new_path = get_current_dir().plus_file(p_new_path);
p_new_path = fix_path(p_new_path);
return ::rename(p_path.utf8().get_data(), p_new_path.utf8().get_data()) == 0 ? OK : FAILED;
}
Error DirAccessUnix::remove(String p_path) {
if (p_path.is_rel_path())
p_path = get_current_dir().plus_file(p_path);
p_path = fix_path(p_path);
struct stat flags;
if ((stat(p_path.utf8().get_data(), &flags) != 0))
return FAILED;
if (S_ISDIR(flags.st_mode))
return ::rmdir(p_path.utf8().get_data()) == 0 ? OK : FAILED;
else
return ::unlink(p_path.utf8().get_data()) == 0 ? OK : FAILED;
}
size_t DirAccessUnix::get_space_left() {
#ifndef NO_STATVFS
struct statvfs vfs;
if (statvfs(current_dir.utf8().get_data(), &vfs) != 0) {
return 0;
};
return vfs.f_bfree * vfs.f_bsize;
#else
// FIXME: Implement this.
return 0;
#endif
};
String DirAccessUnix::get_filesystem_type() const {
return ""; //TODO this should be implemented
}
DirAccessUnix::DirAccessUnix() {
dir_stream = 0;
_cisdir = false;
/* determine drive count */
// set current directory to an absolute path of the current directory
char real_current_dir_name[2048];
ERR_FAIL_COND(getcwd(real_current_dir_name, 2048) == NULL);
if (current_dir.parse_utf8(real_current_dir_name))
current_dir = real_current_dir_name;
change_dir(current_dir);
}
DirAccessUnix::~DirAccessUnix() {
list_dir_end();
}
#endif //posix_enabled