Extract general File class from LogFile.

firmware/application/Makefile

@@ -176,6 +176,7 @@ CPPSRC = main.cpp \
          ../common/ert_packet.cpp \
          spectrum_analysis_app.cpp \
          sd_card.cpp \
+         file.cpp \
          log_file.cpp \
          manchester.cpp \
          string_format.cpp \

firmware/application/file.cpp

@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "file.hpp"
+
+File::~File() {
+	close();
+}
+
+bool File::open_for_append(const std::string file_path) {
+	const auto open_result = f_open(&f, file_path.c_str(), FA_WRITE | FA_OPEN_ALWAYS);
+	if( open_result == FR_OK ) {
+		const auto seek_result = f_lseek(&f, f_size(&f));
+		if( seek_result == FR_OK ) {
+			return true;
+		} else {
+			close();
+		}
+	}
+
+	return false;
+}
+
+bool File::close() {
+	f_close(&f);
+	return true;
+}
+
+bool File::is_ready() {
+	return f_error(&f) == 0;
+}
+
+bool File::read(void* const data, const size_t bytes_to_read) {
+	UINT bytes_read = 0;
+	const auto result = f_read(&f, data, bytes_to_read, &bytes_read);
+	return (result == FR_OK) && (bytes_read == bytes_to_read);
+}
+
+bool File::write(const void* const data, const size_t bytes_to_write) {
+	UINT bytes_written = 0;
+	const auto result = f_write(&f, data, bytes_to_write, &bytes_written);
+	return (result == FR_OK) && (bytes_written == bytes_to_write);
+}
+
+bool File::puts(const std::string string) {
+	const auto result = f_puts(string.c_str(), &f);
+	return (result >= 0);
+}
+
+bool File::sync() {
+	const auto result = f_sync(&f);
+	return (result == FR_OK);
+}

firmware/application/file.hpp

@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __FILE_H__
+#define __FILE_H__
+
+#include "ff.h"
+
+#include <cstddef>
+#include <string>
+
+class File {
+public:
+	~File();
+
+	bool open_for_append(const std::string file_path);
+	bool close();
+
+	bool is_ready();
+
+	bool read(void* const data, const size_t bytes_to_read);
+	bool write(const void* const data, const size_t bytes_to_write);
+
+	bool puts(const std::string string);
+
+	bool sync();
+
+private:
+	const std::string file_path;
+	
+	FIL f;
+};
+
+#endif/*__FILE_H__*/

firmware/application/log_file.cpp

@@ -30,7 +30,7 @@ LogFile::LogFile(
 	const std::string file_path
 ) : file_path { file_path }
 {
-	open();
+	file.open_for_append(file_path);
 
 	sd_card_status_signal_token = sd_card::status_signal += [this](const sd_card::Status status) {
 		this->on_sd_card_status(status);
@@ -40,30 +40,11 @@ LogFile::LogFile(
 LogFile::~LogFile() {
 	sd_card::status_signal -= sd_card_status_signal_token;
 
-	close();
-}
-
-bool LogFile::open() {
-	const auto open_result = f_open(&f, file_path.c_str(), FA_WRITE | FA_OPEN_ALWAYS);
-	if( open_result == FR_OK ) {
-		const auto seek_result = f_lseek(&f, f_size(&f));
-		if( seek_result == FR_OK ) {
-			return true;
-		} else {
-			close();
-		}
-	}
-
-	return false;
-}
-
-bool LogFile::close() {
-	f_close(&f);
-	return true;
+	file.close();
 }
 
 bool LogFile::is_ready() {
-	return !f_error(&f);
+	return file.is_ready();
 }
 
 bool LogFile::write_entry(const rtc::RTC& datetime, const std::string& entry) {
@@ -72,15 +53,13 @@ bool LogFile::write_entry(const rtc::RTC& datetime, const std::string& entry) {
 }
 
 bool LogFile::write(const std::string& message) {
-	const auto puts_result = f_puts(message.c_str(), &f);
-	const auto sync_result = f_sync(&f);
-	return (puts_result >= 0) && (sync_result == FR_OK);
+	return file.puts(message) && file.sync();
 }
 
 void LogFile::on_sd_card_status(const sd_card::Status status) {
 	if( status == sd_card::Status::Mounted ) {
-		open();
+		file.open_for_append(file_path);
 	} else {
-		close();		
+		file.close();		
 	}
 }

firmware/application/log_file.hpp

@@ -24,7 +24,7 @@
 
 #include <string>
 
-#include "ff.h"
+#include "file.hpp"
 #include "sd_card.hpp"
 
 #include "lpc43xx_cpp.hpp"
@@ -35,8 +35,6 @@ public:
 	LogFile(const std::string file_path);
 	~LogFile();
 
-	bool open();
-	bool close();
 	bool is_ready();
 
 	bool write_entry(const rtc::RTC& datetime, const std::string& entry);
@@ -44,7 +42,7 @@ public:
 private:
 	const std::string file_path;
 	
-	FIL f;
+	File file;
 
 	SignalToken sd_card_status_signal_token;