3.8

1 files changed, 54 insertions, 0 deletions

diff --git a/shared/checkExist.cpp b/shared/checkExist.cpp
new file mode 100644
index 00000000..3f71afb8
--- /dev/null
+++ b/shared/checkExist.cpp
@@ -0,0 +1,54 @@
+#include "checkExist.h"
+#include "parallelCall.h"
+#include "fileHandling.h"
+  
+   
+namespace
+{
+template <bool (*testExist)(const Zstring&)>
+class CheckObjectExists : public Async::Procedure
+{ 
+public:
+    CheckObjectExists(const Zstring& filename) :
+        filename_(filename.c_str()), //deep copy: worker thread may run longer than main! Avoid shared data
+        isExisting(false) {}
+
+    virtual void doWork()
+    {
+        isExisting = testExist(filename_); //throw()
+    }
+
+    bool doesExist() const //retrieve result
+    {
+        return isExisting;
+    }
+
+private:
+    const Zstring filename_; //no reference, lifetime not known
+    bool isExisting;
+};
+
+
+template <bool (*testExist)(const Zstring&)>
+inline
+Utility::ResultExist objExists(const Zstring& filename, size_t timeout) //timeout in ms
+{
+    typedef CheckObjectExists<testExist> CheckObjEx;
+    boost::shared_ptr<CheckObjEx> proc(new CheckObjEx(filename));
+
+    return Async::execute(proc, timeout) == Async::TIMEOUT ? Utility::EXISTING_TIMEOUT :
+           (proc->doesExist() ? Utility::EXISTING_TRUE : Utility::EXISTING_FALSE);
+}
+}
+
+
+Utility::ResultExist Utility::fileExists(const Zstring& filename, size_t timeout) //timeout in ms
+{
+    return objExists<FreeFileSync::fileExists>(filename, timeout);
+}
+
+
+Utility::ResultExist Utility::dirExists(const Zstring& dirname, size_t timeout) //timeout in ms
+{
+    return objExists<FreeFileSync::dirExists>(dirname, timeout);
+}