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//===-- Implementation of IncludeFileCommand ------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "IncludeFileCommand.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/SourceMgr.h"
#include <cstdlib>
namespace llvm_libc {
const char IncludeFileCommand::Name[] = "include_file";
void IncludeFileCommand::run(llvm::raw_ostream &OS, const ArgVector &Args,
llvm::StringRef StdHeader,
llvm::RecordKeeper &Records,
const Command::ErrorReporter &Reporter) const {
if (Args.size() != 1) {
Reporter.printFatalError(
"%%include_file command takes exactly 1 argument.");
}
llvm::StringRef IncludeFile = Args[0];
auto Buffer = llvm::MemoryBuffer::getFileAsStream(IncludeFile);
if (!Buffer)
Reporter.printFatalError(llvm::StringRef("Unable to open ") + IncludeFile);
llvm::StringRef Content = Buffer.get()->getBuffer();
// If the included file has %%begin() command listed, then we want to write
// only the content after the begin command.
// TODO: The way the content is split below does not allow space within the
// the parentheses and, before and after the command. This probably is too
// strict and should be relaxed.
auto P = Content.split("\n%%begin()\n");
if (P.second.empty()) {
// There was no %%begin in the content.
OS << P.first;
} else {
OS << P.second;
}
}
} // namespace llvm_libc
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