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//===- BuildSystem.cpp - Utilities for use by build systems ---------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file implements various utilities for use by build systems.
//
//===----------------------------------------------------------------------===//
#include "clang-c/BuildSystem.h"
#include "CXString.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/CBindingWrapping.h"
#include "llvm/Support/Chrono.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/VirtualFileSystem.h"
#include "llvm/Support/raw_ostream.h"
using namespace clang;
using namespace llvm::sys;
unsigned long long clang_getBuildSessionTimestamp(void) {
return llvm::sys::toTimeT(std::chrono::system_clock::now());
}
DEFINE_SIMPLE_CONVERSION_FUNCTIONS(llvm::vfs::YAMLVFSWriter,
CXVirtualFileOverlay)
CXVirtualFileOverlay clang_VirtualFileOverlay_create(unsigned) {
return wrap(new llvm::vfs::YAMLVFSWriter());
}
enum CXErrorCode
clang_VirtualFileOverlay_addFileMapping(CXVirtualFileOverlay VFO,
const char *virtualPath,
const char *realPath) {
if (!VFO || !virtualPath || !realPath)
return CXError_InvalidArguments;
if (!path::is_absolute(virtualPath))
return CXError_InvalidArguments;
if (!path::is_absolute(realPath))
return CXError_InvalidArguments;
for (path::const_iterator
PI = path::begin(virtualPath),
PE = path::end(virtualPath); PI != PE; ++PI) {
StringRef Comp = *PI;
if (Comp == "." || Comp == "..")
return CXError_InvalidArguments;
}
unwrap(VFO)->addFileMapping(virtualPath, realPath);
return CXError_Success;
}
enum CXErrorCode
clang_VirtualFileOverlay_setCaseSensitivity(CXVirtualFileOverlay VFO,
int caseSensitive) {
if (!VFO)
return CXError_InvalidArguments;
unwrap(VFO)->setCaseSensitivity(caseSensitive);
return CXError_Success;
}
enum CXErrorCode
clang_VirtualFileOverlay_writeToBuffer(CXVirtualFileOverlay VFO, unsigned,
char **out_buffer_ptr,
unsigned *out_buffer_size) {
if (!VFO || !out_buffer_ptr || !out_buffer_size)
return CXError_InvalidArguments;
llvm::SmallString<256> Buf;
llvm::raw_svector_ostream OS(Buf);
unwrap(VFO)->write(OS);
StringRef Data = OS.str();
*out_buffer_ptr = static_cast<char*>(llvm::safe_malloc(Data.size()));
*out_buffer_size = Data.size();
memcpy(*out_buffer_ptr, Data.data(), Data.size());
return CXError_Success;
}
void clang_free(void *buffer) {
free(buffer);
}
void clang_VirtualFileOverlay_dispose(CXVirtualFileOverlay VFO) {
delete unwrap(VFO);
}
struct CXModuleMapDescriptorImpl {
std::string ModuleName;
std::string UmbrellaHeader;
};
CXModuleMapDescriptor clang_ModuleMapDescriptor_create(unsigned) {
return new CXModuleMapDescriptorImpl();
}
enum CXErrorCode
clang_ModuleMapDescriptor_setFrameworkModuleName(CXModuleMapDescriptor MMD,
const char *name) {
if (!MMD || !name)
return CXError_InvalidArguments;
MMD->ModuleName = name;
return CXError_Success;
}
enum CXErrorCode
clang_ModuleMapDescriptor_setUmbrellaHeader(CXModuleMapDescriptor MMD,
const char *name) {
if (!MMD || !name)
return CXError_InvalidArguments;
MMD->UmbrellaHeader = name;
return CXError_Success;
}
enum CXErrorCode
clang_ModuleMapDescriptor_writeToBuffer(CXModuleMapDescriptor MMD, unsigned,
char **out_buffer_ptr,
unsigned *out_buffer_size) {
if (!MMD || !out_buffer_ptr || !out_buffer_size)
return CXError_InvalidArguments;
llvm::SmallString<256> Buf;
llvm::raw_svector_ostream OS(Buf);
OS << "framework module " << MMD->ModuleName << " {\n";
OS << " umbrella header \"";
OS.write_escaped(MMD->UmbrellaHeader) << "\"\n";
OS << '\n';
OS << " export *\n";
OS << " module * { export * }\n";
OS << "}\n";
StringRef Data = OS.str();
*out_buffer_ptr = static_cast<char*>(llvm::safe_malloc(Data.size()));
*out_buffer_size = Data.size();
memcpy(*out_buffer_ptr, Data.data(), Data.size());
return CXError_Success;
}
void clang_ModuleMapDescriptor_dispose(CXModuleMapDescriptor MMD) {
delete MMD;
}
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