X-Git-Url: http://git.tdb.fi/?p=libs%2Fcore.git;a=blobdiff_plain;f=source%2Ffs%2Fwindows%2Fdir.cpp;h=151cc1b0944c4b455655c1f426da09c0ee81f89f;hp=6adddeca788a99e73aae2d7289b65721dba77045;hb=edf916d784e503505ddac2acef6f3e9a72abb0d6;hpb=609c9a508cfdc7b42c46c4f21d17639204165a00

diff --git a/source/fs/windows/dir.cpp b/source/fs/windows/dir.cpp
index 6adddec..151cc1b 100644
--- a/source/fs/windows/dir.cpp
+++ b/source/fs/windows/dir.cpp
@@ -1,4 +1,5 @@
 #include <shlobj.h>
+#include <msp/core/mutex.h>
 #include <msp/core/systemerror.h>
 #include "dir.h"
 
@@ -19,6 +20,43 @@ void rmdir(const Path &path)
 		throw system_error("RemoveDirectory");
 }
 
+/* Windows documentation says Get/SetCurrentDirectory use a global buffer and
+are not thread safe. */
+static Mutex &cwd_mutex()
+{
+	static Mutex mutex;
+	return mutex;
+}
+
+Path getcwd()
+{
+	MutexLock lock(cwd_mutex());
+
+	char buf[1024];
+	Path result;
+	DWORD len = GetCurrentDirectory(sizeof(buf), buf);
+	if(len>=sizeof(buf))
+	{
+		vector<char> buf2(len+1);
+		len = GetCurrentDirectory(buf2.size(), buf2.data());
+		result = buf2.data();
+	}
+	else
+		result = buf;
+
+	if(!len)
+		throw system_error("GetCurrentDirectory");
+
+	return result;
+}
+
+void chdir(const Path &path)
+{
+	MutexLock lock(cwd_mutex());
+	if(!SetCurrentDirectory(path.c_str()))
+		throw system_error("SetCurrentDirectory");
+}
+
 Path get_home_dir()
 {
 	char home[MAX_PATH];
@@ -29,6 +67,8 @@ Path get_home_dir()
 
 Path get_user_data_dir(const string &appname)
 {
+	if(appname.empty())
+		throw invalid_argument("get_user_data_dir");
 	char datadir[MAX_PATH];
 	if(SHGetFolderPath(0, CSIDL_LOCAL_APPDATA, 0, 0, datadir)==S_OK)
 		return Path(datadir)/appname;