Add constant for SD card root.

In the future, this should be part of a device abstraction, but having a single constant is an improvement over having duplicated string literals.

src/browsedialog.cpp

@@ -4,6 +4,7 @@
 
 #include "FastDelegate.h"
 #include "filelister.h"
+#include "gmenu2x.h"
 
 using namespace fastdelegate;
 
@@ -40,8 +41,8 @@ bool BrowseDialog::exec()
 		return false;
 
 	string path = fl->getPath();
-	if (path.empty() || !fileExists(path) || path.compare(0, 5, "/card") != 0)
-		setPath("/card");
+	if (path.empty() || !fileExists(path) || path.compare(0, 5, CARD_ROOT) != 0)
+		setPath(CARD_ROOT);
 
 	fl->browse();
 
@@ -161,7 +162,7 @@ void BrowseDialog::directoryUp()
 	if (p == path.size() - 1)
 		p = path.rfind("/", p - 1);
 
-	if (p == string::npos || p < 4 || path.compare(0, 5, "/card") != 0) {
+	if (p == string::npos || p < 4 || path.compare(0, 5, CARD_ROOT) != 0) {
 		close = true;
 		result = false;
 	} else {

src/filedialog.cpp

@@ -19,6 +19,7 @@
  ***************************************************************************/
 
 #include "filedialog.h"
+#include "gmenu2x.h"
 
 using namespace std;
 
@@ -26,7 +27,7 @@ FileDialog::FileDialog(GMenu2X *gmenu2x, const string &text,
 	const string &filter, const string &file, const string &title) :
 	BrowseDialog(gmenu2x, title, text)
 {
-	string path = "/card";
+	string path(CARD_ROOT);
 	if (!file.empty()) {
 		string::size_type pos = file.rfind("/");
 		if (pos != string::npos)

src/gmenu2x.cpp

@@ -76,6 +76,8 @@
 //#include <pnd_discovery.h>
 #endif
 
+const char *CARD_ROOT = "/card";
+
 using namespace std;
 using namespace fastdelegate;
 
@@ -420,7 +422,7 @@ void GMenu2X::initMenu() {
 	menu->loadIcons();
 
 	//DEBUG
-	//menu->addLink( "/card", "sample.pxml", "applications" );
+	//menu->addLink( CARD_ROOT, "sample.pxml", "applications" );
 }
 
 void GMenu2X::about() {
@@ -1025,7 +1027,7 @@ void GMenu2X::options() {
 	int curGlobalVolume = confInt["globalVolume"];
 	//G
 	int prevbacklight = confInt["backlight"];
-	bool showRootFolder = fileExists("/card");
+	bool showRootFolder = fileExists(CARD_ROOT);
 
 	FileLister fl_tr("translations");
 	fl_tr.browse();
@@ -1055,10 +1057,10 @@ void GMenu2X::options() {
 		if (curGlobalVolume!=confInt["globalVolume"]) setVolume(confInt["globalVolume"]);
 		if (lang == "English") lang = "";
 		if (lang != tr.lang()) tr.setLang(lang);
-		if (fileExists("/card") && !showRootFolder)
-			unlink("/card");
-		else if (!fileExists("/card") && showRootFolder)
-			symlink("/","/card");
+		if (fileExists(CARD_ROOT) && !showRootFolder)
+			unlink(CARD_ROOT);
+		else if (!fileExists(CARD_ROOT) && showRootFolder)
+			symlink("/", CARD_ROOT);
 		writeConfig();
 	}
 }
@@ -1603,7 +1605,7 @@ void GMenu2X::scanner() {
 	lineY += 26;
 
 	vector<string> files;
-	scanPath("/card",&files);
+	scanPath(CARD_ROOT, &files);
 
 	//Onyl gph firmware has nand
 /*	if (fwType=="gph" && !f200) {
@@ -1890,7 +1892,7 @@ string GMenu2X::getDiskFree() {
 	string df = "";
 	struct statvfs b;
 
-	int ret = statvfs("/card", &b);
+	int ret = statvfs(CARD_ROOT, &b);
 	if (ret==0) {
 		// Make sure that the multiplication happens in 64 bits.
 		unsigned long long free =

src/gmenu2x.h

@@ -45,6 +45,8 @@ const int BATTERY_READS = 10;
 
 const int LOOP_DELAY=30000;
 
+extern const char *CARD_ROOT;
+
 extern void jz_cpuspeed(unsigned clockspeed);
 
 enum color {

src/selector.cpp

@@ -31,6 +31,7 @@
 #include "linkapp.h"
 #include "selector.h"
 #include "filelister.h"
+#include "gmenu2x.h"
 
 using namespace std;
 
@@ -151,7 +152,7 @@ int Selector::exec(int startSelection) {
 		if ( gmenu2x->input[ACTION_X] ) {
 			if (link->getSelectorBrowser()) {
 				string::size_type p = dir.rfind("/", dir.size()-2);
-				if (p==string::npos || dir.compare(0, 5, "/card") != 0 || p<4) {
+				if (p==string::npos || dir.compare(0, 5, CARD_ROOT) != 0 || p<4) {
 					close = true;
 					result = false;
 				} else {