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//===- CIndex.cpp - Clang-C Source Indexing Library -----------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the Clang-C Source Indexing library.
//
//===----------------------------------------------------------------------===//
#include "CIndexer.h"
#include "CXString.h"
#include "clang/Basic/LLVM.h"
#include "clang/Basic/Version.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Config/llvm-config.h"
#include "llvm/Support/MD5.h"
#include "llvm/Support/MutexGuard.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/Program.h"
#include <cstdio>
#ifdef __CYGWIN__
#include <cygwin/version.h>
#include <sys/cygwin.h>
#define LLVM_ON_WIN32 1
#endif
#ifdef LLVM_ON_WIN32
#include <windows.h>
#else
#include <dlfcn.h>
#endif
using namespace clang;
const std::string &CIndexer::getClangResourcesPath() {
// Did we already compute the path?
if (!ResourcesPath.empty())
return ResourcesPath;
SmallString<128> LibClangPath;
// Find the location where this library lives (libclang.dylib).
#ifdef LLVM_ON_WIN32
MEMORY_BASIC_INFORMATION mbi;
char path[MAX_PATH];
VirtualQuery((void *)(uintptr_t)clang_createTranslationUnit, &mbi,
sizeof(mbi));
GetModuleFileNameA((HINSTANCE)mbi.AllocationBase, path, MAX_PATH);
#ifdef __CYGWIN__
char w32path[MAX_PATH];
strcpy(w32path, path);
#if CYGWIN_VERSION_API_MAJOR > 0 || CYGWIN_VERSION_API_MINOR >= 181
cygwin_conv_path(CCP_WIN_A_TO_POSIX, w32path, path, MAX_PATH);
#else
cygwin_conv_to_full_posix_path(w32path, path);
#endif
#endif
LibClangPath += llvm::sys::path::parent_path(path);
#else
// This silly cast below avoids a C++ warning.
Dl_info info;
if (dladdr((void *)(uintptr_t)clang_createTranslationUnit, &info) == 0)
llvm_unreachable("Call to dladdr() failed");
// We now have the CIndex directory, locate clang relative to it.
LibClangPath += llvm::sys::path::parent_path(info.dli_fname);
#endif
llvm::sys::path::append(LibClangPath, "clang", CLANG_VERSION_STRING);
// Cache our result.
ResourcesPath = LibClangPath.str();
return ResourcesPath;
}
StringRef CIndexer::getClangToolchainPath() {
if (!ToolchainPath.empty())
return ToolchainPath;
StringRef ResourcePath = getClangResourcesPath();
ToolchainPath = llvm::sys::path::parent_path(
llvm::sys::path::parent_path(llvm::sys::path::parent_path(ResourcePath)));
return ToolchainPath;
}
LibclangInvocationReporter::LibclangInvocationReporter(
CIndexer &Idx, OperationKind Op, unsigned ParseOptions,
llvm::ArrayRef<const char *> Args,
llvm::ArrayRef<std::string> InvocationArgs,
llvm::ArrayRef<CXUnsavedFile> UnsavedFiles) {
StringRef Path = Idx.getInvocationEmissionPath();
if (Path.empty())
return;
// Create a temporary file for the invocation log.
SmallString<256> TempPath;
TempPath = Path;
llvm::sys::path::append(TempPath, "libclang-%%%%%%%%%%%%");
int FD;
if (llvm::sys::fs::createUniqueFile(TempPath, FD, TempPath))
return;
File = std::string(TempPath.begin(), TempPath.end());
llvm::raw_fd_ostream OS(FD, /*ShouldClose=*/true);
// Write out the information about the invocation to it.
auto WriteStringKey = [&OS](StringRef Key, StringRef Value) {
OS << R"(")" << Key << R"(":")";
OS << Value << '"';
};
OS << '{';
WriteStringKey("toolchain", Idx.getClangToolchainPath());
OS << ',';
WriteStringKey("libclang.operation",
Op == OperationKind::ParseOperation ? "parse" : "complete");
OS << ',';
OS << R"("libclang.opts":)" << ParseOptions;
OS << ',';
OS << R"("args":[)";
for (const auto &I : llvm::enumerate(Args)) {
if (I.index())
OS << ',';
OS << '"' << I.value() << '"';
}
if (!InvocationArgs.empty()) {
OS << R"(],"invocation-args":[)";
for (const auto &I : llvm::enumerate(InvocationArgs)) {
if (I.index())
OS << ',';
OS << '"' << I.value() << '"';
}
}
if (!UnsavedFiles.empty()) {
OS << R"(],"unsaved_file_hashes":[)";
for (const auto &UF : llvm::enumerate(UnsavedFiles)) {
if (UF.index())
OS << ',';
OS << '{';
WriteStringKey("name", UF.value().Filename);
OS << ',';
llvm::MD5 Hash;
Hash.update(getContents(UF.value()));
llvm::MD5::MD5Result Result;
Hash.final(Result);
SmallString<32> Digest = Result.digest();
WriteStringKey("md5", Digest);
OS << '}';
}
}
OS << "]}";
}
LibclangInvocationReporter::~LibclangInvocationReporter() {
if (!File.empty())
llvm::sys::fs::remove(File);
}
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