From 53d771aafdbe5b919f264f53cba3788e2c4cffd2 Mon Sep 17 00:00:00 2001
From: patrick <patrick@openbsd.org>
Date: Tue, 24 Jan 2017 08:32:59 +0000
Subject: Import LLVM 4.0.0 rc1 including clang and lld to help the current
 development effort on OpenBSD/arm64.

---
 gnu/llvm/tools/llvm-strings/llvm-strings.cpp | 90 ++++++++++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 gnu/llvm/tools/llvm-strings/llvm-strings.cpp

(limited to 'gnu/llvm/tools/llvm-strings/llvm-strings.cpp')

diff --git a/gnu/llvm/tools/llvm-strings/llvm-strings.cpp b/gnu/llvm/tools/llvm-strings/llvm-strings.cpp
new file mode 100644
index 00000000000..e750995331e
--- /dev/null
+++ b/gnu/llvm/tools/llvm-strings/llvm-strings.cpp
@@ -0,0 +1,90 @@
+//===-- llvm-strings.cpp - Printable String dumping utility ---------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This program is a utility that works like binutils "strings", that is, it
+// prints out printable strings in a binary, objdump, or archive file.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Object/Binary.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Error.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/PrettyStackTrace.h"
+#include "llvm/Support/Program.h"
+#include "llvm/Support/Signals.h"
+#include <cctype>
+#include <string>
+
+using namespace llvm;
+using namespace llvm::object;
+
+static cl::list<std::string> InputFileNames(cl::Positional,
+                                            cl::desc("<input object files>"),
+                                            cl::ZeroOrMore);
+
+static cl::opt<bool>
+    PrintFileName("print-file-name",
+                  cl::desc("Print the name of the file before each string"));
+static cl::alias PrintFileNameShort("f", cl::desc(""),
+                                    cl::aliasopt(PrintFileName));
+
+static cl::opt<int>
+    MinLength("bytes", cl::desc("Print sequences of the specified length"),
+              cl::init(4));
+static cl::alias MinLengthShort("n", cl::desc(""), cl::aliasopt(MinLength));
+
+static void strings(raw_ostream &OS, StringRef FileName, StringRef Contents) {
+  auto print = [&OS, FileName](StringRef L) {
+    if (L.size() < static_cast<size_t>(MinLength))
+      return;
+    if (PrintFileName)
+      OS << FileName << ": ";
+    OS << L << '\n';
+  };
+
+  const char *P = nullptr, *E = nullptr, *S = nullptr;
+  for (P = Contents.begin(), E = Contents.end(); P < E; ++P) {
+    if (std::isgraph(*P) || std::isblank(*P)) {
+      if (S == nullptr)
+        S = P;
+    } else if (S) {
+      print(StringRef(S, P - S));
+      S = nullptr;
+    }
+  }
+  if (S)
+    print(StringRef(S, E - S));
+}
+
+int main(int argc, char **argv) {
+  sys::PrintStackTraceOnErrorSignal(argv[0]);
+  PrettyStackTraceProgram X(argc, argv);
+
+  cl::ParseCommandLineOptions(argc, argv, "llvm string dumper\n");
+  if (MinLength == 0) {
+    errs() << "invalid minimum string length 0\n";
+    return EXIT_FAILURE;
+  }
+
+  if (InputFileNames.empty())
+    InputFileNames.push_back("-");
+
+  for (const auto &File : InputFileNames) {
+    ErrorOr<std::unique_ptr<MemoryBuffer>> Buffer =
+        MemoryBuffer::getFileOrSTDIN(File);
+    if (std::error_code EC = Buffer.getError())
+      errs() << File << ": " << EC.message() << '\n';
+    else
+      strings(llvm::outs(), File == "-" ? "{standard input}" : File,
+              Buffer.get()->getMemBufferRef().getBuffer());
+  }
+
+  return EXIT_SUCCESS;
+}
-- 
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