Add system::getAbsoluteDirectory().

include/system.hpp

@@ -25,6 +25,10 @@ void copyFile(const std::string &srcPath, const std::string &destPath);
 The parent directory must exist.
 */
 void createDirectory(const std::string &path);
+/** Returns the canonicalized absolute path pointed to by `path`.
+Returns "" if the symbol is not found.
+*/
+std::string getAbsolutePath(const std::string &path);
 /** Returns the number of logical simultaneous multithreading (SMT) (e.g. Intel Hyperthreaded) threads on the CPU. */
 int getLogicalCoreCount();
 /** Sets a name of the current thread for debuggers and OS-specific process viewers. */

src/main.cpp

@@ -95,6 +95,7 @@ int main(int argc, char *argv[]) {
 
 	asset::init();
 	logger::init();
+	DEBUG("abspath: %s", system::getAbsolutePath("今日は/a").c_str());
 
 	// We can now install a signal handler and log the output
 	// Mac has its own decent crash handler

src/system.cpp

@@ -42,6 +42,7 @@ std::list<std::string> getEntries(const std::string &path) {
 	return filenames;
 }
 
+
 bool isFile(const std::string &path) {
 	struct stat statbuf;
 	if (stat(path.c_str(), &statbuf))
@@ -49,6 +50,7 @@ bool isFile(const std::string &path) {
 	return S_ISREG(statbuf.st_mode);
 }
 
+
 bool isDirectory(const std::string &path) {
 	struct stat statbuf;
 	if (stat(path.c_str(), &statbuf))
@@ -56,6 +58,7 @@ bool isDirectory(const std::string &path) {
 	return S_ISDIR(statbuf.st_mode);
 }
 
+
 void moveFile(const std::string &srcPath, const std::string &destPath) {
 	std::remove(destPath.c_str());
 	// Whether this overwrites existing files is implementation-defined.
@@ -64,6 +67,7 @@ void moveFile(const std::string &srcPath, const std::string &destPath) {
 	std::rename(srcPath.c_str(), destPath.c_str());
 }
 
+
 void copyFile(const std::string &srcPath, const std::string &destPath) {
 	// Open source
 	FILE *source = fopen(srcPath.c_str(), "rb");
@@ -92,6 +96,7 @@ void copyFile(const std::string &srcPath, const std::string &destPath) {
 	}
 }
 
+
 void createDirectory(const std::string &path) {
 #if defined ARCH_WIN
 	std::wstring pathW = string::toWstring(path);
@@ -101,10 +106,23 @@ void createDirectory(const std::string &path) {
 #endif
 }
 
+
+std::string getAbsolutePath(const std::string &path) {
+#if defined ARCH_LIN
+	char buf[PATH_MAX];
+	char *pathC = realpath(path.c_str(), buf);
+	if (pathC)
+		return pathC;
+#endif
+	return "";
+}
+
+
 int getLogicalCoreCount() {
 	return std::thread::hardware_concurrency();
 }
 
+
 void setThreadName(const std::string &name) {
 #if defined ARCH_LIN
 	pthread_setname_np(pthread_self(), name.c_str());
@@ -113,6 +131,7 @@ void setThreadName(const std::string &name) {
 #endif
 }
 
+
 void setThreadRealTime(bool realTime) {
 #if defined ARCH_LIN
 	int err;
@@ -148,6 +167,7 @@ void setThreadRealTime(bool realTime) {
 #endif
 }
 
+
 std::string getStackTrace() {
 	int stackLen = 128;
 	void *stack[stackLen];
@@ -180,6 +200,7 @@ std::string getStackTrace() {
 	return s;
 }
 
+
 void openBrowser(const std::string &url) {
 #if defined ARCH_LIN
 	std::string command = "xdg-open \"" + url + "\"";
@@ -195,6 +216,7 @@ void openBrowser(const std::string &url) {
 #endif
 }
 
+
 void openFolder(const std::string &path) {
 #if defined ARCH_LIN
 	std::string command = "xdg-open \"" + path + "\"";