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// slang-include-system.cpp
#include "slang-include-system.h"
#include "../core/slang-io.h"
#include "../core/slang-string-util.h"
#include "../core/slang-file-system.h"
#include "slang-slice-allocator.h"
#include "slang-artifact-impl.h"
#include "slang-artifact-representation-impl.h"
namespace Slang
{
IncludeSystem::IncludeSystem(SearchDirectoryList* searchDirectories, ISlangFileSystemExt* fileSystemExt, SourceManager* sourceManager) :
m_searchDirectories(searchDirectories),
m_fileSystemExt(fileSystemExt),
m_sourceManager(sourceManager)
{
}
SlangResult IncludeSystem::findFile(SlangPathType fromPathType, const String& fromPath, const String& path, PathInfo& outPathInfo)
{
String combinedPath;
if (fromPath.getLength() == 0 || Path::isAbsolute(path))
{
// If the path is absolute or the fromPath is empty, the combined path is just the path
combinedPath = path;
}
else
{
// Get relative path
ComPtr<ISlangBlob> combinedPathBlob;
SLANG_RETURN_ON_FAIL(m_fileSystemExt->calcCombinedPath(fromPathType, fromPath.begin(), path.begin(), combinedPathBlob.writeRef()));
combinedPath = StringUtil::getString(combinedPathBlob);
if (combinedPath.getLength() <= 0)
{
return SLANG_FAIL;
}
}
// This checks the path exists
SlangPathType pathType;
SLANG_RETURN_ON_FAIL(m_fileSystemExt->getPathType(combinedPath.begin(), &pathType));
if (pathType != SLANG_PATH_TYPE_FILE)
{
return SLANG_E_NOT_FOUND;
}
// Get the uniqueIdentity
ComPtr<ISlangBlob> uniqueIdentityBlob;
SLANG_RETURN_ON_FAIL(m_fileSystemExt->getFileUniqueIdentity(combinedPath.begin(), uniqueIdentityBlob.writeRef()));
// If the rel path exists -> a uniqueIdentity MUST exists too
String uniqueIdentity(StringUtil::getString(uniqueIdentityBlob));
if (uniqueIdentity.getLength() <= 0)
{
// Unique identity can't be empty
return SLANG_FAIL;
}
outPathInfo = PathInfo::makeNormal(combinedPath, uniqueIdentity);
return SLANG_OK;
}
String IncludeSystem::simplifyPath(const String& path)
{
ComPtr<ISlangBlob> simplifiedPath;
if (SLANG_FAILED(m_fileSystemExt->getPath(PathKind::Simplified, path.getBuffer(), simplifiedPath.writeRef())))
{
return path;
}
return StringUtil::getString(simplifiedPath);
}
SlangResult IncludeSystem::findFile(String const& pathToInclude, String const& pathIncludedFrom, PathInfo& outPathInfo)
{
outPathInfo.type = PathInfo::Type::Unknown;
// If it's absolute we only have to try and find if it's there - no need to look at search paths
if (Path::isAbsolute(pathToInclude))
{
// We pass in "" as the from path, so ensure no from path is taken into account
// and to allow easy identification that this is in effect absolute
return findFile(SLANG_PATH_TYPE_DIRECTORY, UnownedStringSlice::fromLiteral(""), pathToInclude, outPathInfo);
}
// Try just relative to current path
{
SlangResult res = findFile(SLANG_PATH_TYPE_FILE, pathIncludedFrom, pathToInclude, outPathInfo);
// It either succeeded or wasn't found, anything else is a failure passed back
if (SLANG_SUCCEEDED(res) || res != SLANG_E_NOT_FOUND)
{
return res;
}
}
// Search all the searchDirectories
for (auto sd = m_searchDirectories; sd; sd = sd->parent)
{
for (auto& dir : sd->searchDirectories)
{
SlangResult res = findFile(SLANG_PATH_TYPE_DIRECTORY, dir.path, pathToInclude, outPathInfo);
if (SLANG_SUCCEEDED(res) || res != SLANG_E_NOT_FOUND)
{
return res;
}
}
}
return SLANG_E_NOT_FOUND;
}
SlangResult IncludeSystem::loadFile(const PathInfo& pathInfo, ComPtr<ISlangBlob>& outBlob, SourceFile*& outSourceFile)
{
if (m_sourceManager)
{
// See if this an already loaded source file
outSourceFile = m_sourceManager->findSourceFileRecursively(pathInfo.uniqueIdentity);
// If not create a new one, and add to the list of known source files
if (!outSourceFile)
{
ComPtr<ISlangBlob> foundSourceBlob;
if (SLANG_FAILED(m_fileSystemExt->loadFile(pathInfo.foundPath.getBuffer(), foundSourceBlob.writeRef())))
{
return SLANG_E_CANNOT_OPEN;
}
outSourceFile = m_sourceManager->createSourceFileWithBlob(pathInfo, foundSourceBlob);
m_sourceManager->addSourceFile(pathInfo.uniqueIdentity, outSourceFile);
outBlob = foundSourceBlob;
return SLANG_OK;
}
else
{
if (outSourceFile->getContentBlob())
{
outBlob = outSourceFile->getContentBlob();
return SLANG_OK;
}
ComPtr<ISlangBlob> foundSourceBlob;
if (SLANG_FAILED(m_fileSystemExt->loadFile(pathInfo.foundPath.getBuffer(), foundSourceBlob.writeRef())))
{
return SLANG_E_CANNOT_OPEN;
}
outSourceFile->setContents(foundSourceBlob);
outBlob = foundSourceBlob;
return SLANG_OK;
}
}
else
{
// If we don't have the source manager, just load
outSourceFile = nullptr;
return m_fileSystemExt->loadFile(pathInfo.foundPath.getBuffer(), outBlob.writeRef());
}
}
SlangResult IncludeSystem::findAndLoadFile(const String& pathToInclude, const String& pathIncludedFrom, PathInfo& outPathInfo, ComPtr<ISlangBlob>& outBlob)
{
SLANG_RETURN_ON_FAIL(findFile(pathToInclude, pathIncludedFrom, outPathInfo));
SLANG_RETURN_ON_FAIL(loadFile(outPathInfo, outBlob));
return SLANG_OK;
}
} // namespace Slang
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