Midi: Remove some duplicated code

Introduced new private read/write_midi_settings() and used them
in MidiSettingsView and SoftSynth.

headers/private/midi/MidiSettings.h

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2015 Haiku, Inc. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ */
+
+#ifndef MIDI_SETTINGS_PRIVATE_H_
+#define MIDI_SETTINGS_PRIVATE_H_
+
+#include <StorageDefs.h>
+#include <SupportDefs.h>
+
+namespace BPrivate {
+
+struct midi_settings {
+	char soundfont_file[B_FILE_NAME_LENGTH];
+};
+
+status_t read_midi_settings(struct midi_settings* settings);
+status_t write_midi_settings(struct midi_settings settings);
+
+};
+
+
+#endif /* MIDI_SETTINGS_PRIVATE_H_ */

src/kits/midi/Jamfile

@@ -18,6 +18,7 @@ for architectureObject in [ MultiArchSubDirSetup ] {
 			Midi.cpp
 			MidiGlue.cpp
 			MidiPort.cpp
+			MidiSettings.cpp
 			MidiStore.cpp
 			MidiSynth.cpp
 			MidiSynthFile.cpp

src/kits/midi/MidiSettings.cpp

@@ -0,0 +1,68 @@
+/*
+ * Copyright 2015 Haiku, Inc. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ */
+
+#include <MidiSettings.h>
+
+#include <File.h>
+#include <FindDirectory.h>
+#include <Path.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define SETTINGS_FILE "midi"
+
+namespace BPrivate {
+
+status_t
+read_midi_settings(struct midi_settings* settings)
+{
+	if (settings == NULL)
+		return B_ERROR;
+
+	char buffer[B_FILE_NAME_LENGTH + 128];
+	BPath path;
+	status_t status = find_directory(B_USER_SETTINGS_DIRECTORY, &path);
+	if (status != B_OK)
+		return status;
+
+	path.Append("midi");
+	BFile file(path.Path(), B_READ_ONLY);
+	if (file.InitCheck() != B_OK
+			|| file.Read(buffer, sizeof(buffer)) <= 0)
+		return B_ERROR;
+
+	sscanf(buffer, "# Midi Settings\n soundfont = %s\n",
+		settings->soundfont_file);
+
+	return B_OK;
+}
+
+
+status_t
+write_midi_settings(struct midi_settings settings)
+{
+	char buffer[B_FILE_NAME_LENGTH + 128];
+	snprintf(buffer, sizeof(buffer), "# Midi Settings\n soundfont = %s\n",
+			settings.soundfont_file);
+
+	BPath path;
+	status_t status = find_directory(B_USER_SETTINGS_DIRECTORY, &path);
+	if (status != B_OK)
+		return status;
+
+	path.Append(SETTINGS_FILE);
+	BFile file(path.Path(), B_READ_WRITE | B_CREATE_FILE | B_ERASE_FILE);
+
+	size_t bufferSize = strlen(buffer);
+	if (file.InitCheck() != B_OK
+		|| file.Write(buffer, bufferSize) != (ssize_t)bufferSize)
+		return B_ERROR;
+
+	return B_OK;
+}
+
+}

src/kits/midi/SoftSynth.cpp

@@ -21,9 +21,12 @@
 #include <NodeInfo.h>
 #include <Path.h>
 #include <PathFinder.h>
+
 #include <string.h>
 #include <stdlib.h>
 
+#include <MidiSettings.h>
+
 #include "debug.h"
 #include "MidiGlue.h"   // for MAKE_BIGTIME
 #include "SoftSynth.h"
@@ -108,22 +111,15 @@ BSoftSynth::SetDefaultInstrumentsFile()
 	// MidiSettingsView::_RetrieveSoftSynthList()
 	// We first search for a setting file (or symlink to it)
 	// in the user settings directory
-	char buffer[512];
-	BPath path;
-	if (find_directory(B_USER_SETTINGS_DIRECTORY, &path) == B_OK) {
-		path.Append("midi");
-		BFile file(path.Path(), B_READ_ONLY);
-		if (file.InitCheck() == B_OK
-				&& file.Read(buffer, sizeof(buffer)) > 0) {
-			char soundFont[512];
-			sscanf(buffer, "# Midi Settings\n soundfont = %s\n",
-				soundFont);
-			if (SetInstrumentsFile(soundFont) == B_OK)
-				return B_OK;
-		}
+
+	struct BPrivate::midi_settings settings;
+	if (BPrivate::read_midi_settings(&settings) == B_OK) {
+		if (SetInstrumentsFile(settings.soundfont_file) == B_OK)
+			return B_OK;
 	}
 
 	// Try a well-known (and usually present on a default install) soft synth
+	BPath path;
 	if (find_directory(B_SYNTH_DIRECTORY, &path, false, NULL) == B_OK) {
 		path.Append("synth/TimGM6mb.sf2");
 		if (SetInstrumentsFile(path.Path()) == B_OK)

src/preferences/media/Jamfile

@@ -6,7 +6,7 @@ if ! $(TARGET_PLATFORM_HAIKU_COMPATIBLE) {
 	SubDirC++Flags -fmultiple-symbol-spaces ;
 }
 
-UsePrivateHeaders media shared ;
+UsePrivateHeaders media midi shared ;
 
 Preference Media :
 	Media.cpp
@@ -15,7 +15,7 @@ Preference Media :
 	MediaViews.cpp
 	MediaWindow.cpp
 	MidiSettingsView.cpp
-	: media be localestub [ TargetLibsupc++ ]
+	: media midi be localestub [ TargetLibsupc++ ]
 	: media.rdef
 	;
 

src/preferences/media/MidiSettingsView.cpp

@@ -5,6 +5,8 @@
 
 #include "MidiSettingsView.h"
 
+#include <MidiSettings.h>
+
 #include <Box.h>
 #include <Catalog.h>
 #include <Directory.h>
@@ -27,8 +29,6 @@
 #undef B_TRANSLATION_CONTEXT
 #define B_TRANSLATION_CONTEXT "Midi View"
 
-#define SETTINGS_FILE "midi"
-
 const static uint32 kSelectSoundFont = 'SeSf';
 
 
@@ -126,25 +126,13 @@ MidiSettingsView::_RetrieveSoftSynthList()
 void
 MidiSettingsView::_LoadSettings()
 {
-	// TODO: Duplicated code between here
-	// and BSoftSynth::SetDefaultInstrumentsFile
-	char buffer[512];
-	BPath path;
-	if (find_directory(B_USER_SETTINGS_DIRECTORY, &path) == B_OK) {
-		path.Append(SETTINGS_FILE);
-		BFile file(path.Path(), B_READ_ONLY);
-		if (file.InitCheck() == B_OK) {
-			file.Read(buffer, sizeof(buffer));
-			char soundFont[512];
-			sscanf(buffer, "# Midi Settings\n soundfont = %s\n",
-				soundFont);
-
-			for (int32 i = 0; i < fListView->CountItems(); i++) {
-				BStringItem* item = (BStringItem*)fListView->ItemAt(i);
-				if (!strcmp(item->Text(), soundFont)) {
-					fListView->Select(i);
-					break;
-				}
+	struct BPrivate::midi_settings settings;
+	if (BPrivate::read_midi_settings(&settings) == B_OK) {
+		for (int32 i = 0; i < fListView->CountItems(); i++) {
+			BStringItem* item = (BStringItem*)fListView->ItemAt(i);
+			if (!strcmp(item->Text(), settings.soundfont_file)) {
+				fListView->Select(i);
+				break;
 			}
 		}
 	}
@@ -162,16 +150,8 @@ MidiSettingsView::_SaveSettings()
 	if (item == NULL)
 		return;
 
-	char buffer[512];
-	snprintf(buffer, 512, "# Midi Settings\n soundfont = %s\n",
-			item->Text());
-
-	BPath path;
-	if (find_directory(B_USER_SETTINGS_DIRECTORY, &path) == B_OK) {
-		path.Append(SETTINGS_FILE);
-		BFile file(path.Path(), B_READ_WRITE | B_CREATE_FILE | B_ERASE_FILE);
-		if (file.InitCheck() == B_OK)
-			file.Write(buffer, strlen(buffer));
-	}
+	struct BPrivate::midi_settings settings;
+	strlcpy(settings.soundfont_file, item->Text(), sizeof(settings.soundfont_file));
+	BPrivate::write_midi_settings(settings);
 }