Add getNextFileName() for faster directory listing, see espressif/arduino-esp32#7229

Author: tueddy

library.properties

@@ -0,0 +1,9 @@
+name=FS
+version=2.0.0
+author=Hristo Gochkov, Ivan Grokhtkov
+maintainer=Hristo Gochkov <[email protected]>
+sentence=ESP32 File System
+paragraph=
+category=Data Storage
+url=
+architectures=esp32

src/FS.cpp

@@ -0,0 +1,304 @@
+/*
+ FS.cpp - file system wrapper
+ Copyright (c) 2015 Ivan Grokhotkov. All rights reserved.
+ This file is part of the esp8266 core for Arduino environment.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include "FS.h"
+#include "FSImpl.h"
+
+using namespace fs;
+
+size_t File::write(uint8_t c)
+{
+    if (!*this) {
+        return 0;
+    }
+
+    return _p->write(&c, 1);
+}
+
+time_t File::getLastWrite()
+{
+    if (!*this) {
+        return 0;
+    }
+
+    return _p->getLastWrite();
+}
+
+size_t File::write(const uint8_t *buf, size_t size)
+{
+    if (!*this) {
+        return 0;
+    }
+
+    return _p->write(buf, size);
+}
+
+int File::available()
+{
+    if (!*this) {
+        return false;
+    }
+
+    return _p->size() - _p->position();
+}
+
+int File::read()
+{
+    if (!*this) {
+        return -1;
+    }
+
+    uint8_t result;
+    if (_p->read(&result, 1) != 1) {
+        return -1;
+    }
+
+    return result;
+}
+
+size_t File::read(uint8_t* buf, size_t size)
+{
+    if (!*this) {
+        return -1;
+    }
+
+    return _p->read(buf, size);
+}
+
+int File::peek()
+{
+    if (!*this) {
+        return -1;
+    }
+
+    size_t curPos = _p->position();
+    int result = read();
+    seek(curPos, SeekSet);
+    return result;
+}
+
+void File::flush()
+{
+    if (!*this) {
+        return;
+    }
+
+    _p->flush();
+}
+
+bool File::seek(uint32_t pos, SeekMode mode)
+{
+    if (!*this) {
+        return false;
+    }
+
+    return _p->seek(pos, mode);
+}
+
+size_t File::position() const
+{
+    if (!*this) {
+        return 0;
+    }
+
+    return _p->position();
+}
+
+size_t File::size() const
+{
+    if (!*this) {
+        return 0;
+    }
+
+    return _p->size();
+}
+
+bool File::setBufferSize(size_t size)
+{
+    if (!*this) {
+        return 0;
+    }
+
+    return _p->setBufferSize(size);
+}
+
+void File::close()
+{
+    if (_p) {
+        _p->close();
+        _p = nullptr;
+    }
+}
+
+File::operator bool() const
+{
+    return _p != nullptr && *_p != false;
+}
+
+const char* File::path() const
+{
+    if (!*this) {
+        return nullptr;
+    }
+
+    return _p->path();
+}
+
+const char* File::name() const
+{
+    if (!*this) {
+        return nullptr;
+    }
+
+    return _p->name();
+}
+
+//to implement
+boolean File::isDirectory(void)
+{
+    if (!*this) {
+        return false;
+    }
+    return _p->isDirectory();
+}
+
+File File::openNextFile(const char* mode)
+{
+    if (!*this) {
+        return File();
+    }
+    return _p->openNextFile(mode);
+}
+
+boolean File::seekDir(long position){
+    if(!_p){
+        return false;
+    }
+    return _p->seekDir(position);
+}
+
+String File::getNextFileName(void)
+{
+    if (!_p) {
+        return ""; 
+    }
+    return _p->getNextFileName();
+
+}
+
+
+void File::rewindDirectory(void)
+{
+    if (!*this) {
+        return;
+    }
+    _p->rewindDirectory();
+}
+
+File FS::open(const String& path, const char* mode, const bool create)
+{
+    return open(path.c_str(), mode, create);
+}
+
+File FS::open(const char* path, const char* mode, const bool create)
+{
+    if (!_impl) {
+        return File();
+    }
+
+    return File(_impl->open(path, mode, create));
+}
+
+bool FS::exists(const char* path)
+{
+    if (!_impl) {
+        return false;
+    }
+    return _impl->exists(path);
+}
+
+bool FS::exists(const String& path)
+{
+    return exists(path.c_str());
+}
+
+bool FS::remove(const char* path)
+{
+    if (!_impl) {
+        return false;
+    }
+    return _impl->remove(path);
+}
+
+bool FS::remove(const String& path)
+{
+    return remove(path.c_str());
+}
+
+bool FS::rename(const char* pathFrom, const char* pathTo)
+{
+    if (!_impl) {
+        return false;
+    }
+    return _impl->rename(pathFrom, pathTo);
+}
+
+bool FS::rename(const String& pathFrom, const String& pathTo)
+{
+    return rename(pathFrom.c_str(), pathTo.c_str());
+}
+
+
+bool FS::mkdir(const char *path)
+{
+    if (!_impl) {
+        return false;
+    }
+    return _impl->mkdir(path);
+}
+
+bool FS::mkdir(const String &path)
+{
+    return mkdir(path.c_str());
+}
+
+bool FS::rmdir(const char *path)
+{
+    if (!_impl) {
+        return false;
+    }
+    return _impl->rmdir(path);
+}
+
+bool FS::rmdir(const String &path)
+{
+    return rmdir(path.c_str());
+}
+
+
+void FSImpl::mountpoint(const char * mp)
+{
+    _mountpoint = mp;
+}
+
+const char * FSImpl::mountpoint()
+{
+    return _mountpoint;
+}