From 723796a0a0fed8e5b8c3222b1c90443189113098 Mon Sep 17 00:00:00 2001
From: jsmall-nvidia <jsmall@nvidia.com>
Date: Mon, 11 Jan 2021 15:24:11 -0500
Subject: LZ4 compression support (#1654)

* #include an absolute path didn't work - because paths were taken to always be relative.

* Testing out use of lz4.

* Added ICompressionSystem, and LZ4 implementation.

* Add support for deflate compression.
Simplify compression interface - to make more easily work across apis.

* WIP on CompressedFileSystem.

* ImplicitDirectoryCollector

* SubStringIndexMap - > StringSliceIndexMap.

* WIP save stdlib in different containers.

* Support for different archive types for stdlib.

* Fix project.

* CompressedFileSystem -> ArchiveFileSystem.
Added CompressionSystemType::None

* Added ArchiveFileSystem

* Fix problem RiffFileSystem load withoug compression system.

* Test archive types.
Improve diagnostic message.

* Fix typo in testing file system archives.

* Split out archive detection.

* Fix gcc warning issue.

* Fix warning.

* RiffArchiveFileSystem -> RiffFileSystem

Co-authored-by: Tim Foley <tfoleyNV@users.noreply.github.com>
---
 source/slang/slang.cpp | 19 +++++++------------
 1 file changed, 7 insertions(+), 12 deletions(-)

(limited to 'source/slang/slang.cpp')

diff --git a/source/slang/slang.cpp b/source/slang/slang.cpp
index fbcc97c51..c82d5cf65 100644
--- a/source/slang/slang.cpp
+++ b/source/slang/slang.cpp
@@ -3,8 +3,7 @@
 #include "../core/slang-io.h"
 #include "../core/slang-string-util.h"
 #include "../core/slang-shared-library.h"
-
-#include "../core/slang-zip-file-system.h"
+#include "../core/slang-archive-file-system.h"
 
 #include "slang-check.h"
 #include "slang-parameter-binding.h"
@@ -266,8 +265,8 @@ SlangResult Session::loadStdLib(const void* stdLib, size_t stdLibSizeInBytes)
     }
 
     // Make a file system to read it from
-    RefPtr<CompressedFileSystem> fileSystem;
-    SLANG_RETURN_ON_FAIL(CompressedFileSystem::createZip(stdLib, stdLibSizeInBytes, fileSystem));
+    RefPtr<ArchiveFileSystem> fileSystem;
+    SLANG_RETURN_ON_FAIL(loadArchiveFileSystem(stdLib, stdLibSizeInBytes, fileSystem));
 
     // Let's try loading serialized modules and adding them
     SLANG_RETURN_ON_FAIL(_readBuiltinModule(fileSystem, coreLanguageScope, "core"));
@@ -275,7 +274,7 @@ SlangResult Session::loadStdLib(const void* stdLib, size_t stdLibSizeInBytes)
     return SLANG_OK;
 }
 
-SlangResult Session::saveStdLib(ISlangBlob** outBlob)
+SlangResult Session::saveStdLib(SlangArchiveType archiveType, ISlangBlob** outBlob)
 {
     if (m_builtinLinkage->mapNameToLoadedModules.Count() == 0)
     {
@@ -284,8 +283,8 @@ SlangResult Session::saveStdLib(ISlangBlob** outBlob)
     }
 
     // Make a file system to read it from
-    RefPtr<CompressedFileSystem> fileSystem;
-    SLANG_RETURN_ON_FAIL(CompressedFileSystem::createZip(fileSystem));
+    RefPtr<ArchiveFileSystem> fileSystem;
+    SLANG_RETURN_ON_FAIL(createArchiveFileSystem(archiveType, fileSystem));
 
     for (auto& pair : m_builtinLinkage->mapNameToLoadedModules)
     {
@@ -315,11 +314,7 @@ SlangResult Session::saveStdLib(ISlangBlob** outBlob)
     }
 
     // Now need to convert into a blob
-    auto archiveContents = fileSystem->getArchive();
-
-    ComPtr<ISlangBlob> blob(new RawBlob(archiveContents.getBuffer(), archiveContents.getCount()));
-    *outBlob = blob.detach();
-
+    SLANG_RETURN_ON_FAIL(fileSystem->storeArchive(true, outBlob));
     return SLANG_OK;
 }
 
-- 
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