Path simplification/hash mode, plus bug fixes (#788)

* * Fix memory bug around expanding va_args - needed buffer to have space for terminating 0
* Fix problem with FileWriter defaults being globals, as memory they allocate, will only be freed after return from main - work around by making StdWriters RefObject derived, and kept in scope such the writers are destroyed before checks for leaks is found
* Added SimplifyPathAndHash mode for CacheFileSystem - will simplify the path and see if simplified path is in cache before reading file (limiting amout of underlying file requests)

* * Added calcReplaceChar
* Renamed DefaultFileSystem to OSFileSystem
* Made OSFileSystem convert windows \ to / on linux

* Simplified logic for caching in CacheFileSystem.

* Added pragma-once-c to add extra test, but also so there is an 'include' directory in preprocessor tests.

* Small fixes in pragma once test.

* Simplified cache handling path, so that paths/simplified paths area always added.

* Improve naming of methods for different caches.

1 files changed, 4 insertions, 1 deletions

diff --git a/source/slangc/main.cpp b/source/slangc/main.cpp
index 2da335628..bcc40b5ca 100644
--- a/source/slangc/main.cpp
+++ b/source/slangc/main.cpp
@@ -81,7 +81,10 @@ int MAIN(int argc, char** argv)
     SlangResult res;
     {
         SlangSession* session = spCreateSession(nullptr);
-        res = innerMain(StdWriters::initDefault(), session, argc, argv);
+
+        auto stdWriters = StdWriters::initDefaultSingleton();
+        
+        res = innerMain(stdWriters, session, argc, argv);
         spDestroySession(session);
     }
     return TestToolUtil::getReturnCode(res);